chemokine microarray assay r Search Results


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Thermo Fisher gene exp cxcl10 hs01124251 g1
Specific primer used for quantitative RT-PCR analysis.
Gene Exp Cxcl10 Hs01124251 G1, supplied by Thermo Fisher, used in various techniques. Bioz Stars score: 99/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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KCAS Bioanalytical and Biomarker Services kcas bio analytical
Specific primer used for quantitative RT-PCR analysis.
Kcas Bio Analytical, supplied by KCAS Bioanalytical and Biomarker Services, used in various techniques. Bioz Stars score: 99/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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R&D Systems goat igg anti mouse ccl21
Fig. 4. Effects of 1 μM As-IV or Oxy on RAC1 activation. RAC1 activation was detected by evaluating the expression of the GTP-RAC1 protein by using a western blot analysis kit. A representative image and the quantification of the band intensity for GTP-RAC1 relative to that of total RAC1 are shown in A-C. (A) Representative western blot analysis of GTP-RAC1 in BMpDCs induced with <t>CCL21</t> and quantification of the band intensity are shown (5 independent experiments). Data are expressed as the mean ± SE (*p < 0.05, n = 5). Representative western blot analysis of GTP-RAC1 in CCL21-induced migrated BMpDCs following treatment with As- IV (B) or Oxy (C) and the quantification of band intensity are shown (7 independent experiments). Data are expressed as the mean ± SE (*p < 0.05, n = 7). Microarray analysis of BMpDCs induced with a CCL21 gradient following treatment with As-IV or Oxy was performed by using the Clariom S Array Mouse. The differential expression of genes in BMpDCs induced with a CCL21 gradient following treatment with vehicle (control), As-IV or Oxy is displayed in the heatmap (D). The red and blue colors indicated the up-regulation normalized intensity values (log2) and down-regulation normalized intensity values (log2) of each RNA in each sample.
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R&D Systems human ccl4 mip 1beta duoset elisa r d systems cat
Fig. 4. Effects of 1 μM As-IV or Oxy on RAC1 activation. RAC1 activation was detected by evaluating the expression of the GTP-RAC1 protein by using a western blot analysis kit. A representative image and the quantification of the band intensity for GTP-RAC1 relative to that of total RAC1 are shown in A-C. (A) Representative western blot analysis of GTP-RAC1 in BMpDCs induced with <t>CCL21</t> and quantification of the band intensity are shown (5 independent experiments). Data are expressed as the mean ± SE (*p < 0.05, n = 5). Representative western blot analysis of GTP-RAC1 in CCL21-induced migrated BMpDCs following treatment with As- IV (B) or Oxy (C) and the quantification of band intensity are shown (7 independent experiments). Data are expressed as the mean ± SE (*p < 0.05, n = 7). Microarray analysis of BMpDCs induced with a CCL21 gradient following treatment with As-IV or Oxy was performed by using the Clariom S Array Mouse. The differential expression of genes in BMpDCs induced with a CCL21 gradient following treatment with vehicle (control), As-IV or Oxy is displayed in the heatmap (D). The red and blue colors indicated the up-regulation normalized intensity values (log2) and down-regulation normalized intensity values (log2) of each RNA in each sample.
Human Ccl4 Mip 1beta Duoset Elisa R D Systems Cat, supplied by R&D Systems, used in various techniques. Bioz Stars score: 94/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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R&D Systems il 8 elisa kit
Figure 1. Gene transcription changes after ABT-737 treatment. A, microarray analysis of gene expression induced by ABT-737. PV-10 cells were treated in triplicate with DMSO or 10 mmol/L ABT-737 for 24 hours and gene microarray changes documented. B, gene changes associated with senescence. C, qT-PCR analysis of IL-6 and IL-8 transcripts. PV-10 and 22Rv1 cells were treated in triplicate with DMSO, ABT-737 (10 mmol/L) or enantiomer (En., 10 mmol/ L) for 24 hours (mean SD, n ¼ 3). D, the secretion of IL-6 and IL-8 in PV-10 cells treated with DMSO, ABT-737 or enantiomer for 24 hours was determined by <t>ELISA</t> (n ¼ 6, mean SD).
Il 8 Elisa Kit, supplied by R&D Systems, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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R&D Systems cytokine chemokine protein array
Figure 1. Gene transcription changes after ABT-737 treatment. A, microarray analysis of gene expression induced by ABT-737. PV-10 cells were treated in triplicate with DMSO or 10 mmol/L ABT-737 for 24 hours and gene microarray changes documented. B, gene changes associated with senescence. C, qT-PCR analysis of IL-6 and IL-8 transcripts. PV-10 and 22Rv1 cells were treated in triplicate with DMSO, ABT-737 (10 mmol/L) or enantiomer (En., 10 mmol/ L) for 24 hours (mean SD, n ¼ 3). D, the secretion of IL-6 and IL-8 in PV-10 cells treated with DMSO, ABT-737 or enantiomer for 24 hours was determined by <t>ELISA</t> (n ¼ 6, mean SD).
Cytokine Chemokine Protein Array, supplied by R&D Systems, used in various techniques. Bioz Stars score: 98/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Thermo Fisher gene exp cxcl8 hs00174103 m1
Reagents and tools table
Gene Exp Cxcl8 Hs00174103 M1, supplied by Thermo Fisher, used in various techniques. Bioz Stars score: 99/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Thermo Fisher gene exp cxcl2 hs00236966 m1
Published ChIP‐seq data from KB cells (Jurida et al , ; GSE64224 and GSE52470) were used to annotate active enhancers and p65 NF‐κB recruitment in untreated cells compared to cells stimulated with IL‐1α for 60 min ± TAKi. The browser views show ChIP‐seq profiles for all conditions of the IL8 and <t>CXCL2</t> chemokine loci. Gray areas highlight four chromatin regions with IL‐1α‐inducible H3K27 acetylation and p65 binding. As indicated by black horizontal bars, these chromatin regions were provisionally designated by us as “class II enhancers” (Jurida et al , ) to distinguish them from the entire repertoire of all active (i.e., H3K4me1‐ and H3K27ac‐positive) enhancers. Vertical bars indicate predicted NF‐κB motifs in the DNA sequence and the positions of all sgRNAs used in this study for CRISPRa (see Fig ) or for enhancer or promoter deletions (see Figs and EV4). Bar graphs show cumulative read counts across the four IL‐1α‐regulated and TAKi‐sensitive class II enhancers. The two flanking enhancers with strongest p65 binding (2 and 4) are the ones investigated in detail in this study.
Gene Exp Cxcl2 Hs00236966 M1, supplied by Thermo Fisher, used in various techniques. Bioz Stars score: 85/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Thermo Fisher gene exp cxcl13 hs00757930 m1
Novel biomarker candidates for OSCC identified using microarray analysis.
Gene Exp Cxcl13 Hs00757930 M1, supplied by Thermo Fisher, used in various techniques. Bioz Stars score: 91/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Thermo Fisher gene exp cxcr4 hs00607978 s1
Differentially expressed genes in RASFsn-stimulated chondrocytes (FC ≥ 2; FC ≤ -2; RMA and GCOS)
Gene Exp Cxcr4 Hs00607978 S1, supplied by Thermo Fisher, used in various techniques. Bioz Stars score: 99/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Thermo Fisher gene exp il1b hs01555410 m1
TaqMan gene expression IDs for target mRNAs
Gene Exp Il1b Hs01555410 M1, supplied by Thermo Fisher, used in various techniques. Bioz Stars score: 99/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Thermo Fisher gene exp il6 hs00174131 m1
mRNAs with increased ribosome association after depletion of KSRP The increase in polysome association (mean of two experiments) of mRNAs from HeLa cells transfected with siRNA against KSRP or against GFP as a control and stimulated with IL-1α for 2 h is shown. Polysome association was calculated as the ratio of signals obtained in the microarray analysis of total RNA of pooled fractions 6–9 (“translated”) over fractions 2–4 (“untranslated”) after gradient centrifugation of cytoplasmic extracts (see B ). GenBank accession numbers are cited in parentheses. cds, coding sequence.
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Image Search Results


Specific primer used for quantitative RT-PCR analysis.

Journal: Stem Cells International

Article Title: Comparison of Stemness and Gene Expression between Gingiva and Dental Follicles in Children

doi: 10.1155/2016/8596520

Figure Lengend Snippet: Specific primer used for quantitative RT-PCR analysis.

Article Snippet: CXCL10 , Positive regulation of leukocyte, chemotaxis , Hs01124251_g1 , 135.

Techniques: Quantitative RT-PCR, Cell Differentiation, Chemotaxis Assay, Activity Assay, Transduction

Representative genes differentially expressed with higher expression levels in the gingiva than in dental follicles (absolute fold change > 4.0).

Journal: Stem Cells International

Article Title: Comparison of Stemness and Gene Expression between Gingiva and Dental Follicles in Children

doi: 10.1155/2016/8596520

Figure Lengend Snippet: Representative genes differentially expressed with higher expression levels in the gingiva than in dental follicles (absolute fold change > 4.0).

Article Snippet: CXCL10 , Positive regulation of leukocyte, chemotaxis , Hs01124251_g1 , 135.

Techniques: Expressing, Standard Deviation, Modification, Activity Assay, Cell Differentiation, Transduction, Chemotaxis Assay

Verification of microarray results by immunohistochemical (IHC) staining. Hematoxylin-eosin staining in the gingiva (a, f) and dental follicles (DFs) (k, p) (asterisk: outer border neighboring alveolar bone). IHC staining for CXCL10 in the gingiva (b, g) and DFs (l, q). IHC staining for CSTA in the gingiva (c, h) and DFs (m, r). The expression of CXCL10 and CSTA was stained markedly in the gingival epithelium. The IHC staining for AMBN in the gingiva (d, i) and DFs (n, s). AMBN was stained around the outer layer of the DFs. The IHC staining for CXCL12 in the gingiva (e, j) and dental follicles (o, t). CXCL12 was stained in both a cellular layer and the collagenous connective tissue of DFs (scale bars: 200 μ m).

Journal: Stem Cells International

Article Title: Comparison of Stemness and Gene Expression between Gingiva and Dental Follicles in Children

doi: 10.1155/2016/8596520

Figure Lengend Snippet: Verification of microarray results by immunohistochemical (IHC) staining. Hematoxylin-eosin staining in the gingiva (a, f) and dental follicles (DFs) (k, p) (asterisk: outer border neighboring alveolar bone). IHC staining for CXCL10 in the gingiva (b, g) and DFs (l, q). IHC staining for CSTA in the gingiva (c, h) and DFs (m, r). The expression of CXCL10 and CSTA was stained markedly in the gingival epithelium. The IHC staining for AMBN in the gingiva (d, i) and DFs (n, s). AMBN was stained around the outer layer of the DFs. The IHC staining for CXCL12 in the gingiva (e, j) and dental follicles (o, t). CXCL12 was stained in both a cellular layer and the collagenous connective tissue of DFs (scale bars: 200 μ m).

Article Snippet: CXCL10 , Positive regulation of leukocyte, chemotaxis , Hs01124251_g1 , 135.

Techniques: Microarray, Immunohistochemical staining, Immunohistochemistry, Staining, Expressing

Fig. 4. Effects of 1 μM As-IV or Oxy on RAC1 activation. RAC1 activation was detected by evaluating the expression of the GTP-RAC1 protein by using a western blot analysis kit. A representative image and the quantification of the band intensity for GTP-RAC1 relative to that of total RAC1 are shown in A-C. (A) Representative western blot analysis of GTP-RAC1 in BMpDCs induced with CCL21 and quantification of the band intensity are shown (5 independent experiments). Data are expressed as the mean ± SE (*p < 0.05, n = 5). Representative western blot analysis of GTP-RAC1 in CCL21-induced migrated BMpDCs following treatment with As- IV (B) or Oxy (C) and the quantification of band intensity are shown (7 independent experiments). Data are expressed as the mean ± SE (*p < 0.05, n = 7). Microarray analysis of BMpDCs induced with a CCL21 gradient following treatment with As-IV or Oxy was performed by using the Clariom S Array Mouse. The differential expression of genes in BMpDCs induced with a CCL21 gradient following treatment with vehicle (control), As-IV or Oxy is displayed in the heatmap (D). The red and blue colors indicated the up-regulation normalized intensity values (log2) and down-regulation normalized intensity values (log2) of each RNA in each sample.

Journal: Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

Article Title: Suppression of plasmacytoid dendritic cell migration to colonic isolated lymphoid follicles abrogates the development of colitis.

doi: 10.1016/j.biopha.2021.111881

Figure Lengend Snippet: Fig. 4. Effects of 1 μM As-IV or Oxy on RAC1 activation. RAC1 activation was detected by evaluating the expression of the GTP-RAC1 protein by using a western blot analysis kit. A representative image and the quantification of the band intensity for GTP-RAC1 relative to that of total RAC1 are shown in A-C. (A) Representative western blot analysis of GTP-RAC1 in BMpDCs induced with CCL21 and quantification of the band intensity are shown (5 independent experiments). Data are expressed as the mean ± SE (*p < 0.05, n = 5). Representative western blot analysis of GTP-RAC1 in CCL21-induced migrated BMpDCs following treatment with As- IV (B) or Oxy (C) and the quantification of band intensity are shown (7 independent experiments). Data are expressed as the mean ± SE (*p < 0.05, n = 7). Microarray analysis of BMpDCs induced with a CCL21 gradient following treatment with As-IV or Oxy was performed by using the Clariom S Array Mouse. The differential expression of genes in BMpDCs induced with a CCL21 gradient following treatment with vehicle (control), As-IV or Oxy is displayed in the heatmap (D). The red and blue colors indicated the up-regulation normalized intensity values (log2) and down-regulation normalized intensity values (log2) of each RNA in each sample.

Article Snippet: 30 μm sections cut by using a cryostat (Leica, Nussloch, Germany) were soaked in 0.3% Triton X (Sigma, Missouri, USA) for 2 h and 2% Block Ace (DS Pharma Biomedical, Osaka, Y. Zhang et al. Biomedicine & Pharmacotherapy 141 (2021) 111881 Japan) for 1 h. Then, the colon sections were stained with the primary antibodies rat IgG anti-mouse B220 (1:200, BioLegend, San Diego, CA, USA), hamster IgG anti-mouse CD11c (1:100, BioLegend) and goat IgG anti-mouse CCL21 (1:200, R&D Systems).

Techniques: Activation Assay, Expressing, Western Blot, Microarray, Quantitative Proteomics, Control

Fig. 6. Effects of As-IV or Oxy on the distribution of CCL21 in the DSS-induced colitis model. The distribution of CCL21 in the colonic ILFs of DSS-induced colitis mice treated with saline (A), As-IV (B) or Oxy (C) was identified by immunohistochemical staining of the colon. Immunohistochemical staining was performed on samples from 3 mice/group, and representative images are presented.

Journal: Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

Article Title: Suppression of plasmacytoid dendritic cell migration to colonic isolated lymphoid follicles abrogates the development of colitis.

doi: 10.1016/j.biopha.2021.111881

Figure Lengend Snippet: Fig. 6. Effects of As-IV or Oxy on the distribution of CCL21 in the DSS-induced colitis model. The distribution of CCL21 in the colonic ILFs of DSS-induced colitis mice treated with saline (A), As-IV (B) or Oxy (C) was identified by immunohistochemical staining of the colon. Immunohistochemical staining was performed on samples from 3 mice/group, and representative images are presented.

Article Snippet: 30 μm sections cut by using a cryostat (Leica, Nussloch, Germany) were soaked in 0.3% Triton X (Sigma, Missouri, USA) for 2 h and 2% Block Ace (DS Pharma Biomedical, Osaka, Y. Zhang et al. Biomedicine & Pharmacotherapy 141 (2021) 111881 Japan) for 1 h. Then, the colon sections were stained with the primary antibodies rat IgG anti-mouse B220 (1:200, BioLegend, San Diego, CA, USA), hamster IgG anti-mouse CD11c (1:100, BioLegend) and goat IgG anti-mouse CCL21 (1:200, R&D Systems).

Techniques: Saline, Immunohistochemical staining, Staining

Figure 1. Gene transcription changes after ABT-737 treatment. A, microarray analysis of gene expression induced by ABT-737. PV-10 cells were treated in triplicate with DMSO or 10 mmol/L ABT-737 for 24 hours and gene microarray changes documented. B, gene changes associated with senescence. C, qT-PCR analysis of IL-6 and IL-8 transcripts. PV-10 and 22Rv1 cells were treated in triplicate with DMSO, ABT-737 (10 mmol/L) or enantiomer (En., 10 mmol/ L) for 24 hours (mean SD, n ¼ 3). D, the secretion of IL-6 and IL-8 in PV-10 cells treated with DMSO, ABT-737 or enantiomer for 24 hours was determined by ELISA (n ¼ 6, mean SD).

Journal: Cancer Research

Article Title: The BH3 Mimetic ABT-737 Induces Cancer Cell Senescence

doi: 10.1158/0008-5472.can-10-1977

Figure Lengend Snippet: Figure 1. Gene transcription changes after ABT-737 treatment. A, microarray analysis of gene expression induced by ABT-737. PV-10 cells were treated in triplicate with DMSO or 10 mmol/L ABT-737 for 24 hours and gene microarray changes documented. B, gene changes associated with senescence. C, qT-PCR analysis of IL-6 and IL-8 transcripts. PV-10 and 22Rv1 cells were treated in triplicate with DMSO, ABT-737 (10 mmol/L) or enantiomer (En., 10 mmol/ L) for 24 hours (mean SD, n ¼ 3). D, the secretion of IL-6 and IL-8 in PV-10 cells treated with DMSO, ABT-737 or enantiomer for 24 hours was determined by ELISA (n ¼ 6, mean SD).

Article Snippet: Conditioned medium was collected following treatment and used at a 2:1 dilution in the human interleukin-6 (IL-6) or IL-8 ELISA Kit (R&D Systems) according to the manufacturer's instructions.

Techniques: Microarray, Gene Expression, Enzyme-linked Immunosorbent Assay

Reagents and tools table

Journal: EMBO Reports

Article Title: The proximity-based protein interactome and regulatory logics of the transcription factor p65 NF-κB/RELA

doi: 10.1038/s44319-024-00339-8

Figure Lengend Snippet: Reagents and tools table

Article Snippet: Both pools were additionally supplemented with assays for three prototypical NF-κB target genes IL8 (#Hs00174103_m1), NFKBIA (#Hs00153283_m1) and CXCL2 (#Hs00236966_m1), two housekeeping genes GUSB (#Hs99999908_m1) and GAPDH (#Hs02758991_g1) and the positive control RELA (#Hs01042019_g1).

Techniques: CRISPR, Bacteria, Recombinant, Cloning, Clone Assay, Mutagenesis, Control, Plasmid Preparation, Sequencing, Luciferase, Gene Expression, Labeling, Binding Assay, Modification, Saline, Western Blot, Transfection, Protease Inhibitor, Random Hexamer, Reverse Transcription, Membrane, In Situ, Proximity Ligation Assay, SYBR Green Assay, Microarray, Software

Published ChIP‐seq data from KB cells (Jurida et al , ; GSE64224 and GSE52470) were used to annotate active enhancers and p65 NF‐κB recruitment in untreated cells compared to cells stimulated with IL‐1α for 60 min ± TAKi. The browser views show ChIP‐seq profiles for all conditions of the IL8 and CXCL2 chemokine loci. Gray areas highlight four chromatin regions with IL‐1α‐inducible H3K27 acetylation and p65 binding. As indicated by black horizontal bars, these chromatin regions were provisionally designated by us as “class II enhancers” (Jurida et al , ) to distinguish them from the entire repertoire of all active (i.e., H3K4me1‐ and H3K27ac‐positive) enhancers. Vertical bars indicate predicted NF‐κB motifs in the DNA sequence and the positions of all sgRNAs used in this study for CRISPRa (see Fig ) or for enhancer or promoter deletions (see Figs and EV4). Bar graphs show cumulative read counts across the four IL‐1α‐regulated and TAKi‐sensitive class II enhancers. The two flanking enhancers with strongest p65 binding (2 and 4) are the ones investigated in detail in this study.

Journal: The EMBO Journal

Article Title: Distinct IL‐1α‐responsive enhancers promote acute and coordinated changes in chromatin topology in a hierarchical manner

doi: 10.15252/embj.2019101533

Figure Lengend Snippet: Published ChIP‐seq data from KB cells (Jurida et al , ; GSE64224 and GSE52470) were used to annotate active enhancers and p65 NF‐κB recruitment in untreated cells compared to cells stimulated with IL‐1α for 60 min ± TAKi. The browser views show ChIP‐seq profiles for all conditions of the IL8 and CXCL2 chemokine loci. Gray areas highlight four chromatin regions with IL‐1α‐inducible H3K27 acetylation and p65 binding. As indicated by black horizontal bars, these chromatin regions were provisionally designated by us as “class II enhancers” (Jurida et al , ) to distinguish them from the entire repertoire of all active (i.e., H3K4me1‐ and H3K27ac‐positive) enhancers. Vertical bars indicate predicted NF‐κB motifs in the DNA sequence and the positions of all sgRNAs used in this study for CRISPRa (see Fig ) or for enhancer or promoter deletions (see Figs and EV4). Bar graphs show cumulative read counts across the four IL‐1α‐regulated and TAKi‐sensitive class II enhancers. The two flanking enhancers with strongest p65 binding (2 and 4) are the ones investigated in detail in this study.

Article Snippet: 2 or 1 μl of this reaction mixture was used to amplify cDNAs using assays on demand (0.25 or 0.5 μl) (Applied Biosystems/Thermo Fisher Scientific) for ACTB (Hs99999903_m1), GUSB (Hs99999908_m1), IL6 (Hs00174131_m1), IL8 (Hs00174103_m1), NFKBIA (Hs00153283_m1), CXCL1 ( Hs00236937_m1), CXCL2 ( Hs00236966_m1), CXCL3 ( Hs00171061_m1), CCL20 ( Hs00171125_m1), and RELA (p65) ( Hs00153294_m1), as well as TaqMan Fast Universal PCR Master Mix (Applied Biosystems/Thermo Fisher Scientific).

Techniques: ChIP-sequencing, Binding Assay, Sequencing

Cross‐linking‐free chromosome conformation capture (i4C) analysis was performed using chromatin from KB cells ± IL‐1α stimulation for 60 min in the presence or absence of a TAK inhibitor (TAKi). Shown are i4C profiles in the 1 Mbp around the CXCL2 locus on chromosome 4 ( ideogram ). Average read counts of two biological replicates are plotted, generated using the CXCL2 promoter ( blue highlight ) or enhancer ( pink highlight ) as a viewpoint. The region of the IL8 promoter/enhancer is also shown ( gray highlight ). Below each profile, significantly strong ( brown ), medium ( red ), or weaker interactions ( orange ) called via foursig software (Williams et al , ) are indicated. All profiles are shown aligned to gene models ( blue ) and CTCF ChIP‐seq, as well as to H3K27ac and H3K4me1 ChIP‐seq data from KB cells (GSE64224 + GSE52470) performed under the same conditions (Jurida et al , ). The breadth of topologically associating domains (TADs) in the locus is indicated above. Meta‐plots showing coverage of ATAC‐seq (this study) and H3K27ac, p65, and RNA polymerase II (RNAPII) ChIP‐seq signals (GSE64224 + GSE52470) at i4C fragments ± 1 kbp contacted by the CXCL2 promoter or enhancer in KB cells ± IL‐1α stimulation for 60 min in the presence or absence of a TAK inhibitor (TAKi). Source data are available online for this figure.

Journal: The EMBO Journal

Article Title: Distinct IL‐1α‐responsive enhancers promote acute and coordinated changes in chromatin topology in a hierarchical manner

doi: 10.15252/embj.2019101533

Figure Lengend Snippet: Cross‐linking‐free chromosome conformation capture (i4C) analysis was performed using chromatin from KB cells ± IL‐1α stimulation for 60 min in the presence or absence of a TAK inhibitor (TAKi). Shown are i4C profiles in the 1 Mbp around the CXCL2 locus on chromosome 4 ( ideogram ). Average read counts of two biological replicates are plotted, generated using the CXCL2 promoter ( blue highlight ) or enhancer ( pink highlight ) as a viewpoint. The region of the IL8 promoter/enhancer is also shown ( gray highlight ). Below each profile, significantly strong ( brown ), medium ( red ), or weaker interactions ( orange ) called via foursig software (Williams et al , ) are indicated. All profiles are shown aligned to gene models ( blue ) and CTCF ChIP‐seq, as well as to H3K27ac and H3K4me1 ChIP‐seq data from KB cells (GSE64224 + GSE52470) performed under the same conditions (Jurida et al , ). The breadth of topologically associating domains (TADs) in the locus is indicated above. Meta‐plots showing coverage of ATAC‐seq (this study) and H3K27ac, p65, and RNA polymerase II (RNAPII) ChIP‐seq signals (GSE64224 + GSE52470) at i4C fragments ± 1 kbp contacted by the CXCL2 promoter or enhancer in KB cells ± IL‐1α stimulation for 60 min in the presence or absence of a TAK inhibitor (TAKi). Source data are available online for this figure.

Article Snippet: 2 or 1 μl of this reaction mixture was used to amplify cDNAs using assays on demand (0.25 or 0.5 μl) (Applied Biosystems/Thermo Fisher Scientific) for ACTB (Hs99999903_m1), GUSB (Hs99999908_m1), IL6 (Hs00174131_m1), IL8 (Hs00174103_m1), NFKBIA (Hs00153283_m1), CXCL1 ( Hs00236937_m1), CXCL2 ( Hs00236966_m1), CXCL3 ( Hs00171061_m1), CCL20 ( Hs00171125_m1), and RELA (p65) ( Hs00153294_m1), as well as TaqMan Fast Universal PCR Master Mix (Applied Biosystems/Thermo Fisher Scientific).

Techniques: Generated, Software, ChIP-sequencing

Genome browser views of the CXCL2 and IL8 chemokine loci on human chromosome 4 show H3K4me1, H3K4me3, H3K27ac, and RNA polymerase II ENCODE ChIP‐seq profiles from HeLa‐S3 cells relative to the IL8 and CXCL2 gene models ( blue ). The locations of the deleted NF‐κB binding sites in their flanking enhancer regions are indicated ( orange ). Both loci were mutated using pairs of sgRNAs in stably transfected HeLa cell lines, and Sanger sequencing results of PCR‐amplified genomic regions using DNA of both enhancer‐mutant cell lines (Δp65 eIL8 and Δp65 eCXCL2 ) confirmed removal of 56 and 59 bp, respectively. Blue shades mark the targeted NF‐κB binding sites. mRNA levels of seven IL‐1α‐responsive genes in control (empty vector) or enhancer‐mutant (Δp65 eIL8 and Δp65 eCXCL2 ) HeLa lines was assessed by RT–qPCR (mean levels ± SEM, normalized to GUSB ; n = 4 (vector, Δp65 eIL8 ), n = 3 (Δp65 eCXCL2 )) at the indicated times after IL‐1α stimulation. *: significantly different to control; P < 0.01, unpaired, two‐tailed Student's t ‐test. Microarray gene expression analysis was performed in HeLa cells ± IL‐1α stimulation for 60 min on control (empty vector; n = 4) and three p65 enhancer‐deletion lines (Δp65 eIL8 , Δp65 e CXCL2 , and Δp65 eIL8+eCXCL2 ; n = 2). Differentially expressed genes were identified based on a moderated t ‐test ( P‐ value < 0.05) and at least threefold change compared to the mean control levels (empty vector). The box plots show distribution of quantile‐normalized mRNA expression values across all experimental conditions and cell lines. Gene sets ( from top to bottom ) represent IL‐1α‐regulated genes, all significantly expressed genes, and all mRNAs expressed from the genes of chromosome 4. Boundaries of the box indicate the 25 th /75 th percentiles, black lines within the box mark the medians, whiskers (error bars) indicate the 10 th /90 th percentiles, and black dots mark the 5 th /95 th percentiles. Additional analyses are provided in Fig B–D. The complete data are provided in <xref ref-type=Table EV1 . Parental (wt), vector controls, IL8 enhancer‐mutant cells (Δp65 eIL8 ), or stable HeLa lines carrying CRISPR/Cas9‐mediated mutations of the RELA gene (Δ RELA ) and therefore lacking p65 NF‐κB (see also Fig EV4) were left untreated or stimulated with IL‐1α as indicated. Then, total RNA from cell pellets and proteins from supernatants were analyzed by RT–qPCR and ELISA, respectively. IL6 and IL8 mRNA levels are depicted relative to the unstimulated vector controls ( upper panel ). IL‐8 and IL‐6 cytokine levels were normalized to total RNA, and concentrations are shown ( lower panels ). Data are from three independent experiments; shown are means ± SD. Vector controls, IL8 enhancer‐mutant cells (Δp65 eIL8 ), or cells lacking p65 (Δ RELA ) were left untreated or were stimulated with IL‐1α for 8 h in serum‐free cell culture medium. After 7.5 h, half of the cells received puromycin for 30 min to label nascent polypeptides in vivo for monitoring ongoing translation (Iwasaki & Ingolia, ). Then, supernatants were harvested and proteins were precipitated and analyzed for newly synthesized polypeptides by immunoblotting using anti‐puromycin antibodies (left panel ) or for the entire stable secretome by silver staining (right panel ). Shown is one out of two experiments yielding identical results. " width="100%" height="100%">

Journal: The EMBO Journal

Article Title: Distinct IL‐1α‐responsive enhancers promote acute and coordinated changes in chromatin topology in a hierarchical manner

doi: 10.15252/embj.2019101533

Figure Lengend Snippet: Genome browser views of the CXCL2 and IL8 chemokine loci on human chromosome 4 show H3K4me1, H3K4me3, H3K27ac, and RNA polymerase II ENCODE ChIP‐seq profiles from HeLa‐S3 cells relative to the IL8 and CXCL2 gene models ( blue ). The locations of the deleted NF‐κB binding sites in their flanking enhancer regions are indicated ( orange ). Both loci were mutated using pairs of sgRNAs in stably transfected HeLa cell lines, and Sanger sequencing results of PCR‐amplified genomic regions using DNA of both enhancer‐mutant cell lines (Δp65 eIL8 and Δp65 eCXCL2 ) confirmed removal of 56 and 59 bp, respectively. Blue shades mark the targeted NF‐κB binding sites. mRNA levels of seven IL‐1α‐responsive genes in control (empty vector) or enhancer‐mutant (Δp65 eIL8 and Δp65 eCXCL2 ) HeLa lines was assessed by RT–qPCR (mean levels ± SEM, normalized to GUSB ; n = 4 (vector, Δp65 eIL8 ), n = 3 (Δp65 eCXCL2 )) at the indicated times after IL‐1α stimulation. *: significantly different to control; P < 0.01, unpaired, two‐tailed Student's t ‐test. Microarray gene expression analysis was performed in HeLa cells ± IL‐1α stimulation for 60 min on control (empty vector; n = 4) and three p65 enhancer‐deletion lines (Δp65 eIL8 , Δp65 e CXCL2 , and Δp65 eIL8+eCXCL2 ; n = 2). Differentially expressed genes were identified based on a moderated t ‐test ( P‐ value < 0.05) and at least threefold change compared to the mean control levels (empty vector). The box plots show distribution of quantile‐normalized mRNA expression values across all experimental conditions and cell lines. Gene sets ( from top to bottom ) represent IL‐1α‐regulated genes, all significantly expressed genes, and all mRNAs expressed from the genes of chromosome 4. Boundaries of the box indicate the 25 th /75 th percentiles, black lines within the box mark the medians, whiskers (error bars) indicate the 10 th /90 th percentiles, and black dots mark the 5 th /95 th percentiles. Additional analyses are provided in Fig B–D. The complete data are provided in Table EV1 . Parental (wt), vector controls, IL8 enhancer‐mutant cells (Δp65 eIL8 ), or stable HeLa lines carrying CRISPR/Cas9‐mediated mutations of the RELA gene (Δ RELA ) and therefore lacking p65 NF‐κB (see also Fig EV4) were left untreated or stimulated with IL‐1α as indicated. Then, total RNA from cell pellets and proteins from supernatants were analyzed by RT–qPCR and ELISA, respectively. IL6 and IL8 mRNA levels are depicted relative to the unstimulated vector controls ( upper panel ). IL‐8 and IL‐6 cytokine levels were normalized to total RNA, and concentrations are shown ( lower panels ). Data are from three independent experiments; shown are means ± SD. Vector controls, IL8 enhancer‐mutant cells (Δp65 eIL8 ), or cells lacking p65 (Δ RELA ) were left untreated or were stimulated with IL‐1α for 8 h in serum‐free cell culture medium. After 7.5 h, half of the cells received puromycin for 30 min to label nascent polypeptides in vivo for monitoring ongoing translation (Iwasaki & Ingolia, ). Then, supernatants were harvested and proteins were precipitated and analyzed for newly synthesized polypeptides by immunoblotting using anti‐puromycin antibodies (left panel ) or for the entire stable secretome by silver staining (right panel ). Shown is one out of two experiments yielding identical results.

Article Snippet: 2 or 1 μl of this reaction mixture was used to amplify cDNAs using assays on demand (0.25 or 0.5 μl) (Applied Biosystems/Thermo Fisher Scientific) for ACTB (Hs99999903_m1), GUSB (Hs99999908_m1), IL6 (Hs00174131_m1), IL8 (Hs00174103_m1), NFKBIA (Hs00153283_m1), CXCL1 ( Hs00236937_m1), CXCL2 ( Hs00236966_m1), CXCL3 ( Hs00171061_m1), CCL20 ( Hs00171125_m1), and RELA (p65) ( Hs00153294_m1), as well as TaqMan Fast Universal PCR Master Mix (Applied Biosystems/Thermo Fisher Scientific).

Techniques: ChIP-sequencing, Binding Assay, Stable Transfection, Transfection, Sequencing, Amplification, Mutagenesis, Plasmid Preparation, Quantitative RT-PCR, Two Tailed Test, Microarray, Expressing, CRISPR, Enzyme-linked Immunosorbent Assay, Cell Culture, In Vivo, Synthesized, Western Blot, Silver Staining

Empty vector controls or Δp65 eIL8 , Δp65 eCXCL2 , and Δp65 eIL8+eCXCL2 enhancer‐mutant HeLa lines were stimulated with IL‐1α for 60 min or were left untreated. Then, actinomycin D (5 μg/ml) was added to stop transcription and RNAs were immediately extracted (reference time point 0 min) or incubations were continued to monitor the decay of IL8 and CXCL2 mRNAs at different time points. RT–qPCR was performed from total RNA, and changes in mRNA expression were calculated and are depicted relative to the 0‐min time point (mean levels ± SEM, normalized to GUSB ; n = 2). Summary of microarray gene expression analysis performed in HeLa cells ± IL‐1α stimulation for 60 min on control (empty vector; n = 4) and three p65 enhancer‐deletion lines (Δp65 eIL8 / ‐ CXCL2 / ‐ IL8+CXCL2 ; n = 2). Differentially expressed genes were identified based on a moderated t ‐test ( P‐ value < 0.05) and at least threefold change compared to the mean control levels (empty vector). All data are provided in <xref ref-type=Table EV1 . Heatmap depicting fold changes (log 2 ) in response to IL‐1α for each sample over the mean of vector control levels ( blue to red ) for the top 93 IL‐1α‐regulated genes (> 3‐fold, P ‐value < 0.05). Additionally, the effect of the three enhancer‐mutant lines on the IL‐1α response compared to the mean of IL‐1α‐stimulated vector controls is visualized ( purple to green ). Purple shades indicate suppression of IL‐1α‐activated genes. Gene ontology and KEGG terms associated with the 93 shared IL‐1α‐upregulated genes from panel (C) against the entire set of the 14,204 expressed genes. " width="100%" height="100%">

Journal: The EMBO Journal

Article Title: Distinct IL‐1α‐responsive enhancers promote acute and coordinated changes in chromatin topology in a hierarchical manner

doi: 10.15252/embj.2019101533

Figure Lengend Snippet: Empty vector controls or Δp65 eIL8 , Δp65 eCXCL2 , and Δp65 eIL8+eCXCL2 enhancer‐mutant HeLa lines were stimulated with IL‐1α for 60 min or were left untreated. Then, actinomycin D (5 μg/ml) was added to stop transcription and RNAs were immediately extracted (reference time point 0 min) or incubations were continued to monitor the decay of IL8 and CXCL2 mRNAs at different time points. RT–qPCR was performed from total RNA, and changes in mRNA expression were calculated and are depicted relative to the 0‐min time point (mean levels ± SEM, normalized to GUSB ; n = 2). Summary of microarray gene expression analysis performed in HeLa cells ± IL‐1α stimulation for 60 min on control (empty vector; n = 4) and three p65 enhancer‐deletion lines (Δp65 eIL8 / ‐ CXCL2 / ‐ IL8+CXCL2 ; n = 2). Differentially expressed genes were identified based on a moderated t ‐test ( P‐ value < 0.05) and at least threefold change compared to the mean control levels (empty vector). All data are provided in Table EV1 . Heatmap depicting fold changes (log 2 ) in response to IL‐1α for each sample over the mean of vector control levels ( blue to red ) for the top 93 IL‐1α‐regulated genes (> 3‐fold, P ‐value < 0.05). Additionally, the effect of the three enhancer‐mutant lines on the IL‐1α response compared to the mean of IL‐1α‐stimulated vector controls is visualized ( purple to green ). Purple shades indicate suppression of IL‐1α‐activated genes. Gene ontology and KEGG terms associated with the 93 shared IL‐1α‐upregulated genes from panel (C) against the entire set of the 14,204 expressed genes.

Article Snippet: 2 or 1 μl of this reaction mixture was used to amplify cDNAs using assays on demand (0.25 or 0.5 μl) (Applied Biosystems/Thermo Fisher Scientific) for ACTB (Hs99999903_m1), GUSB (Hs99999908_m1), IL6 (Hs00174131_m1), IL8 (Hs00174103_m1), NFKBIA (Hs00153283_m1), CXCL1 ( Hs00236937_m1), CXCL2 ( Hs00236966_m1), CXCL3 ( Hs00171061_m1), CCL20 ( Hs00171125_m1), and RELA (p65) ( Hs00153294_m1), as well as TaqMan Fast Universal PCR Master Mix (Applied Biosystems/Thermo Fisher Scientific).

Techniques: Plasmid Preparation, Mutagenesis, Quantitative RT-PCR, Expressing, Microarray

NF‐κB (p65), histone marks, and RNA polymerase II enrichment at the IL8 and CXCL2 promoter and enhancer in control (empty vector) or mutated (Δp65 eIL8 and Δp65 eCXCL2 ) HeLa lines were assessed by ChIP‐qPCR (mean enrichment over input ± SEM) at the indicated times after IL‐1α stimulation. IgG, H3K27ac, H3K4me1, H3, and p65 ChIP‐qPCR data are from three (vector, Δp65 eCXCL2 ) or four (Δp65 EIL8 ) independent experiments performed in duplicate; all others are from at least two independent experiments. *: significantly different to vector controls; P < 0.01, unpaired, two‐tailed Student's t ‐test. As in panel (A), but for the promoters of the IL6 , CCL20 , NFKBIA , CXCL1 , and CXCL3 genes. Data are derived from at least two independent experiments (mean ± SEM, * P < 0.01, unpaired, two‐tailed Student's t ‐test).

Journal: The EMBO Journal

Article Title: Distinct IL‐1α‐responsive enhancers promote acute and coordinated changes in chromatin topology in a hierarchical manner

doi: 10.15252/embj.2019101533

Figure Lengend Snippet: NF‐κB (p65), histone marks, and RNA polymerase II enrichment at the IL8 and CXCL2 promoter and enhancer in control (empty vector) or mutated (Δp65 eIL8 and Δp65 eCXCL2 ) HeLa lines were assessed by ChIP‐qPCR (mean enrichment over input ± SEM) at the indicated times after IL‐1α stimulation. IgG, H3K27ac, H3K4me1, H3, and p65 ChIP‐qPCR data are from three (vector, Δp65 eCXCL2 ) or four (Δp65 EIL8 ) independent experiments performed in duplicate; all others are from at least two independent experiments. *: significantly different to vector controls; P < 0.01, unpaired, two‐tailed Student's t ‐test. As in panel (A), but for the promoters of the IL6 , CCL20 , NFKBIA , CXCL1 , and CXCL3 genes. Data are derived from at least two independent experiments (mean ± SEM, * P < 0.01, unpaired, two‐tailed Student's t ‐test).

Article Snippet: 2 or 1 μl of this reaction mixture was used to amplify cDNAs using assays on demand (0.25 or 0.5 μl) (Applied Biosystems/Thermo Fisher Scientific) for ACTB (Hs99999903_m1), GUSB (Hs99999908_m1), IL6 (Hs00174131_m1), IL8 (Hs00174103_m1), NFKBIA (Hs00153283_m1), CXCL1 ( Hs00236937_m1), CXCL2 ( Hs00236966_m1), CXCL3 ( Hs00171061_m1), CCL20 ( Hs00171125_m1), and RELA (p65) ( Hs00153294_m1), as well as TaqMan Fast Universal PCR Master Mix (Applied Biosystems/Thermo Fisher Scientific).

Techniques: Plasmid Preparation, Two Tailed Test, Derivative Assay

Representative triple RNA FISH images from HeLa cells ± IL‐1α stimulation for 60 min. Mature mRNAs ( IL8 , β‐actin ; red ) and intronic RNAs ( CXCL2 , purple ; IL8, green ) are detected against nuclei stained with Hoechst 33342 ( blue ). Typical foci marking individually labeled IL8 / CXCL2 transcription sites or merged signals indicating co‐transcription and spatial proximity are enlarged ( inset ). Scale bar: 10 μm. Quantification of RNA FISH signals from parental (wt), control (vector), p65‐deletion (Δp65 eIL8 and Δp65 eCXCL2 ), or p65‐knockout (Δ RELA ) HeLa lines ± IL‐1α stimulation for 60 min. Negative controls (neg ctrl) indicate samples from IL‐1α‐stimulated control cells in which RNA FISH was performed using pre‐amplifier, amplifier, and label probe mixes, but omitting the specific probe sets for IL8 or CXCL2 . These samples were used to define unspecific signals. Data from three independent experiments are pooled and plotted. The box plots show the distributions of FISH signals. Boundaries of the box indicate the 25 th /75 th percentiles, black lines mark medians, and colored lines mark means, respectively. Whiskers (error bars) indicate the 10 th /90 th percentiles, and circles mark all remaining outliers. The data from panel (B) were used to separately quantify the fraction of cells with mono‐ or biallelic IL8 or CXCL2 intronic RNA expression ( purple, green, blue colors ), as well as the extent of colocalizing (overlapping) intronic RNA FISH signals in individual cells, indicating simultaneously activated transcription sites on the same allele ( yellow colors ). The total numbers of cells analyzed are shown above each bar. Data are depicted relative to the total number of analyzed cells. * P < 0.05; Fisher's exact test. Parental (wt) or control HeLa cells (vector) were treated with the TAK1 inhibitor (TAKi) or solvent (DMSO) for 30 min ± IL‐1α stimulation for 60 min. Intronic RNA FISH was performed in three independent experiments and quantified as in panel (C). The total numbers of cells analyzed are shown above each bar. * P < 0.05; Fisher's exact test. As in panel (D), but for human pigmented retinal epithelial cells (RPE‐1) treated with the TAK1 inhibitor (TAKi) or solvent only (DMSO) for 30 min ± IL‐1α stimulation for 60 min. Data information: In panels (D, E), data are pooled from three independent experiments.

Journal: The EMBO Journal

Article Title: Distinct IL‐1α‐responsive enhancers promote acute and coordinated changes in chromatin topology in a hierarchical manner

doi: 10.15252/embj.2019101533

Figure Lengend Snippet: Representative triple RNA FISH images from HeLa cells ± IL‐1α stimulation for 60 min. Mature mRNAs ( IL8 , β‐actin ; red ) and intronic RNAs ( CXCL2 , purple ; IL8, green ) are detected against nuclei stained with Hoechst 33342 ( blue ). Typical foci marking individually labeled IL8 / CXCL2 transcription sites or merged signals indicating co‐transcription and spatial proximity are enlarged ( inset ). Scale bar: 10 μm. Quantification of RNA FISH signals from parental (wt), control (vector), p65‐deletion (Δp65 eIL8 and Δp65 eCXCL2 ), or p65‐knockout (Δ RELA ) HeLa lines ± IL‐1α stimulation for 60 min. Negative controls (neg ctrl) indicate samples from IL‐1α‐stimulated control cells in which RNA FISH was performed using pre‐amplifier, amplifier, and label probe mixes, but omitting the specific probe sets for IL8 or CXCL2 . These samples were used to define unspecific signals. Data from three independent experiments are pooled and plotted. The box plots show the distributions of FISH signals. Boundaries of the box indicate the 25 th /75 th percentiles, black lines mark medians, and colored lines mark means, respectively. Whiskers (error bars) indicate the 10 th /90 th percentiles, and circles mark all remaining outliers. The data from panel (B) were used to separately quantify the fraction of cells with mono‐ or biallelic IL8 or CXCL2 intronic RNA expression ( purple, green, blue colors ), as well as the extent of colocalizing (overlapping) intronic RNA FISH signals in individual cells, indicating simultaneously activated transcription sites on the same allele ( yellow colors ). The total numbers of cells analyzed are shown above each bar. Data are depicted relative to the total number of analyzed cells. * P < 0.05; Fisher's exact test. Parental (wt) or control HeLa cells (vector) were treated with the TAK1 inhibitor (TAKi) or solvent (DMSO) for 30 min ± IL‐1α stimulation for 60 min. Intronic RNA FISH was performed in three independent experiments and quantified as in panel (C). The total numbers of cells analyzed are shown above each bar. * P < 0.05; Fisher's exact test. As in panel (D), but for human pigmented retinal epithelial cells (RPE‐1) treated with the TAK1 inhibitor (TAKi) or solvent only (DMSO) for 30 min ± IL‐1α stimulation for 60 min. Data information: In panels (D, E), data are pooled from three independent experiments.

Article Snippet: 2 or 1 μl of this reaction mixture was used to amplify cDNAs using assays on demand (0.25 or 0.5 μl) (Applied Biosystems/Thermo Fisher Scientific) for ACTB (Hs99999903_m1), GUSB (Hs99999908_m1), IL6 (Hs00174131_m1), IL8 (Hs00174103_m1), NFKBIA (Hs00153283_m1), CXCL1 ( Hs00236937_m1), CXCL2 ( Hs00236966_m1), CXCL3 ( Hs00171061_m1), CCL20 ( Hs00171125_m1), and RELA (p65) ( Hs00153294_m1), as well as TaqMan Fast Universal PCR Master Mix (Applied Biosystems/Thermo Fisher Scientific).

Techniques: Staining, Labeling, Plasmid Preparation, Knock-Out, RNA Expression

A CRISPR activation (CRISPRa) strategy was applied to test enhancer functions individually. This approach involves a “dead” Cas9 ( blue ) and VP64 ( green ) fusion protein that recruits the NF‐κB ( orange ) and HSF1 ( red ) transactivation domains via MS2 recognition of two stem loops in the sgRNA scaffold ( magenta ). These complexes were targeted to the IL8 or CXCL2 enhancers and promoters (highlights) via different sgRNA pools in HeLa. The position of individual sgRNAs used for CRISPRa is shown in more detail in Fig . Left bar graphs: Wild‐type HeLa cells were transiently transfected with different combinations of plasmids encoding the “dead” Cas9‐VP64 fusion protein, the MS2‐p65‐HSF1 fusion protein, and empty sgRNA vector or versions containing sgRNAs targeting the IL8 enhancer or promoter. Twenty‐four hours post‐transfection, cells were lysed and total RNA was analyzed for expression changes of the indicated genes compared to samples carrying dCas9‐VP64 and MS2‐p65‐HSF1 fusions, but no sgRNAs. Right bar graphs: The same experiments were performed using sgRNAs targeting the CXCL2 enhancer and promoter. Data information: All data are from four independent transfections. Shown are mean values ± SEM. P ‐values are derived from unpaired t ‐tests comparing every condition against cells expressing all transactivators but lacking sgRNAs (first lane in each graph). Only significant differences are marked by asterisks.

Journal: The EMBO Journal

Article Title: Distinct IL‐1α‐responsive enhancers promote acute and coordinated changes in chromatin topology in a hierarchical manner

doi: 10.15252/embj.2019101533

Figure Lengend Snippet: A CRISPR activation (CRISPRa) strategy was applied to test enhancer functions individually. This approach involves a “dead” Cas9 ( blue ) and VP64 ( green ) fusion protein that recruits the NF‐κB ( orange ) and HSF1 ( red ) transactivation domains via MS2 recognition of two stem loops in the sgRNA scaffold ( magenta ). These complexes were targeted to the IL8 or CXCL2 enhancers and promoters (highlights) via different sgRNA pools in HeLa. The position of individual sgRNAs used for CRISPRa is shown in more detail in Fig . Left bar graphs: Wild‐type HeLa cells were transiently transfected with different combinations of plasmids encoding the “dead” Cas9‐VP64 fusion protein, the MS2‐p65‐HSF1 fusion protein, and empty sgRNA vector or versions containing sgRNAs targeting the IL8 enhancer or promoter. Twenty‐four hours post‐transfection, cells were lysed and total RNA was analyzed for expression changes of the indicated genes compared to samples carrying dCas9‐VP64 and MS2‐p65‐HSF1 fusions, but no sgRNAs. Right bar graphs: The same experiments were performed using sgRNAs targeting the CXCL2 enhancer and promoter. Data information: All data are from four independent transfections. Shown are mean values ± SEM. P ‐values are derived from unpaired t ‐tests comparing every condition against cells expressing all transactivators but lacking sgRNAs (first lane in each graph). Only significant differences are marked by asterisks.

Article Snippet: 2 or 1 μl of this reaction mixture was used to amplify cDNAs using assays on demand (0.25 or 0.5 μl) (Applied Biosystems/Thermo Fisher Scientific) for ACTB (Hs99999903_m1), GUSB (Hs99999908_m1), IL6 (Hs00174131_m1), IL8 (Hs00174103_m1), NFKBIA (Hs00153283_m1), CXCL1 ( Hs00236937_m1), CXCL2 ( Hs00236966_m1), CXCL3 ( Hs00171061_m1), CCL20 ( Hs00171125_m1), and RELA (p65) ( Hs00153294_m1), as well as TaqMan Fast Universal PCR Master Mix (Applied Biosystems/Thermo Fisher Scientific).

Techniques: CRISPR, Activation Assay, Transfection, Plasmid Preparation, Expressing, Derivative Assay

i4C profiles in the 1.6 Mbp around the BMP4 and SAMD4A loci on chromosome 14 ( ideogram ) ± TNFα stimulation for 60 min. Data were generated using the SAMD4A ( blue highlight ) and BMP4 promoters (gray highlight ) or enhancers ( dotted rectangles ) as viewpoints, and profiles are shown aligned to gene models ( blue ) and to ENCODE ChIP‐seq profiles from primary HUVECs. The breadth of topologically associating domains (TADs) in the locus is indicated above ( rectangles ). ΔeBMP4 and ΔeSAMD4A indicate i4C data generated using primers specifically targeting the respective enhancer deletions in the population. Left : electrophoresis profiles of wild‐type (wt) and truncated amplicons ( scissors ) from CRISPR‐edited HUVEC populations, where the upstream BMP4 enhancer was deleted in > 30% alleles. Right : relative changes in nascent (intronic) RNA levels of the BMP4 ( gray ), SAMD4A ( blue ), and CXCL2 TNFα‐inducible genes ( black ) between wild‐type and ΔeBMP4 cell populations in the presence or absence of TNFα stimulation. Shown are mean values ± SD. * P ‐value < 0.05; unpaired, two‐tailed Student's t ‐test ( n = 2). As in panel (B), but for HUVECs carrying ˜12% alleles lacking the SAMD4A intronic enhancer. Shown are mean values ± SD. * P < 0.05; unpaired, two‐tailed Student's t ‐test ( n = 2). Bar plot showing the distribution of split reads that mapped to each chromosome from multi contact (MC)‐i4C experiments using the SAMD4A promoter ( blue ), SAMD4A enhancer ( white ), or BMP4 enhancer ( gray ) as a viewpoint; unmapped reads are also shown. Bar plot showing the number of interacting fragments contained in each analyzed MC‐i4C read. Inset : counts for the number of useful reads and fragments per each viewpoint. MC‐i4C profiles in the 2 Mbp around the BMP4 and SAMD4A loci on chromosome 14 ( ideogram ) ± TNFα stimulation for 60 min. Data were generated using the SAMD4A promoter ( blue highlight ) and enhancer ( dotted rectangle ) or the BMP4 promoter ( gray highlight ) as viewpoints, and profiles are shown aligned to gene models ( blue ) and to ENCODE ChIP‐seq profiles from primary HUVECs. Source data are available online for this figure.

Journal: The EMBO Journal

Article Title: Distinct IL‐1α‐responsive enhancers promote acute and coordinated changes in chromatin topology in a hierarchical manner

doi: 10.15252/embj.2019101533

Figure Lengend Snippet: i4C profiles in the 1.6 Mbp around the BMP4 and SAMD4A loci on chromosome 14 ( ideogram ) ± TNFα stimulation for 60 min. Data were generated using the SAMD4A ( blue highlight ) and BMP4 promoters (gray highlight ) or enhancers ( dotted rectangles ) as viewpoints, and profiles are shown aligned to gene models ( blue ) and to ENCODE ChIP‐seq profiles from primary HUVECs. The breadth of topologically associating domains (TADs) in the locus is indicated above ( rectangles ). ΔeBMP4 and ΔeSAMD4A indicate i4C data generated using primers specifically targeting the respective enhancer deletions in the population. Left : electrophoresis profiles of wild‐type (wt) and truncated amplicons ( scissors ) from CRISPR‐edited HUVEC populations, where the upstream BMP4 enhancer was deleted in > 30% alleles. Right : relative changes in nascent (intronic) RNA levels of the BMP4 ( gray ), SAMD4A ( blue ), and CXCL2 TNFα‐inducible genes ( black ) between wild‐type and ΔeBMP4 cell populations in the presence or absence of TNFα stimulation. Shown are mean values ± SD. * P ‐value < 0.05; unpaired, two‐tailed Student's t ‐test ( n = 2). As in panel (B), but for HUVECs carrying ˜12% alleles lacking the SAMD4A intronic enhancer. Shown are mean values ± SD. * P < 0.05; unpaired, two‐tailed Student's t ‐test ( n = 2). Bar plot showing the distribution of split reads that mapped to each chromosome from multi contact (MC)‐i4C experiments using the SAMD4A promoter ( blue ), SAMD4A enhancer ( white ), or BMP4 enhancer ( gray ) as a viewpoint; unmapped reads are also shown. Bar plot showing the number of interacting fragments contained in each analyzed MC‐i4C read. Inset : counts for the number of useful reads and fragments per each viewpoint. MC‐i4C profiles in the 2 Mbp around the BMP4 and SAMD4A loci on chromosome 14 ( ideogram ) ± TNFα stimulation for 60 min. Data were generated using the SAMD4A promoter ( blue highlight ) and enhancer ( dotted rectangle ) or the BMP4 promoter ( gray highlight ) as viewpoints, and profiles are shown aligned to gene models ( blue ) and to ENCODE ChIP‐seq profiles from primary HUVECs. Source data are available online for this figure.

Article Snippet: 2 or 1 μl of this reaction mixture was used to amplify cDNAs using assays on demand (0.25 or 0.5 μl) (Applied Biosystems/Thermo Fisher Scientific) for ACTB (Hs99999903_m1), GUSB (Hs99999908_m1), IL6 (Hs00174131_m1), IL8 (Hs00174103_m1), NFKBIA (Hs00153283_m1), CXCL1 ( Hs00236937_m1), CXCL2 ( Hs00236966_m1), CXCL3 ( Hs00171061_m1), CCL20 ( Hs00171125_m1), and RELA (p65) ( Hs00153294_m1), as well as TaqMan Fast Universal PCR Master Mix (Applied Biosystems/Thermo Fisher Scientific).

Techniques: Generated, ChIP-sequencing, Electrophoresis, CRISPR, Two Tailed Test

Novel biomarker candidates for OSCC identified using microarray analysis.

Journal: Cancer Medicine

Article Title: Serum CXCL13 as a Novel Biomarker in Oral Squamous Cell Carcinoma

doi: 10.1002/cam4.70263

Figure Lengend Snippet: Novel biomarker candidates for OSCC identified using microarray analysis.

Article Snippet: TaqMan probes and primers for CXCL13 (Hs00757930_m1) and HMBS (Hs00609297_m1) were obtained from Thermo Fisher Scientific.

Techniques: Biomarker Discovery, Microarray, Binding Assay

Expression of CXCL13 mRNA in primary OSCC tissues by RT‐qPCR. (A) CXCL13 expression was higher in tumor tissues compared to adjacent normal tissues in all cases. (B) Significant upregulation of CXCL13 mRNA was observed in tumor tissues. ** p < 0.01 compared to adjacent normal tissues.

Journal: Cancer Medicine

Article Title: Serum CXCL13 as a Novel Biomarker in Oral Squamous Cell Carcinoma

doi: 10.1002/cam4.70263

Figure Lengend Snippet: Expression of CXCL13 mRNA in primary OSCC tissues by RT‐qPCR. (A) CXCL13 expression was higher in tumor tissues compared to adjacent normal tissues in all cases. (B) Significant upregulation of CXCL13 mRNA was observed in tumor tissues. ** p < 0.01 compared to adjacent normal tissues.

Article Snippet: TaqMan probes and primers for CXCL13 (Hs00757930_m1) and HMBS (Hs00609297_m1) were obtained from Thermo Fisher Scientific.

Techniques: Expressing, Quantitative RT-PCR

Serum levels of CXCL13 protein in patients with OSCC. (A) The average serum CXCL13 protein in 125 patients with OSCC was 72.8 ρg/mL. (B) The average serum CXCL13 protein in healthy individuals was 33.5 ρg/mL. (C) The reference value determined by the ROC curve for maximizing the TPF/FPF ratio was 53.0 ρg/mL. FPF, false‐positive fraction; TPF, true‐positive fraction.

Journal: Cancer Medicine

Article Title: Serum CXCL13 as a Novel Biomarker in Oral Squamous Cell Carcinoma

doi: 10.1002/cam4.70263

Figure Lengend Snippet: Serum levels of CXCL13 protein in patients with OSCC. (A) The average serum CXCL13 protein in 125 patients with OSCC was 72.8 ρg/mL. (B) The average serum CXCL13 protein in healthy individuals was 33.5 ρg/mL. (C) The reference value determined by the ROC curve for maximizing the TPF/FPF ratio was 53.0 ρg/mL. FPF, false‐positive fraction; TPF, true‐positive fraction.

Article Snippet: TaqMan probes and primers for CXCL13 (Hs00757930_m1) and HMBS (Hs00609297_m1) were obtained from Thermo Fisher Scientific.

Techniques:

Serum  CXCL13  levels in patients with OSCC.

Journal: Cancer Medicine

Article Title: Serum CXCL13 as a Novel Biomarker in Oral Squamous Cell Carcinoma

doi: 10.1002/cam4.70263

Figure Lengend Snippet: Serum CXCL13 levels in patients with OSCC.

Article Snippet: TaqMan probes and primers for CXCL13 (Hs00757930_m1) and HMBS (Hs00609297_m1) were obtained from Thermo Fisher Scientific.

Techniques:

Diagnostic sensitivity of serum  CXCL13  and SCC in patients with OSCC.

Journal: Cancer Medicine

Article Title: Serum CXCL13 as a Novel Biomarker in Oral Squamous Cell Carcinoma

doi: 10.1002/cam4.70263

Figure Lengend Snippet: Diagnostic sensitivity of serum CXCL13 and SCC in patients with OSCC.

Article Snippet: TaqMan probes and primers for CXCL13 (Hs00757930_m1) and HMBS (Hs00609297_m1) were obtained from Thermo Fisher Scientific.

Techniques: Diagnostic Assay

Serum CXCL13 and clinicopathological factors in patients with OSCC. (A) Serum CXCL13 protein levels in T classification. The serum CXCL13 proteins increased in accordance with primary tumor size. The serum CXCL13 levels in T1 were significantly higher than in T3 and T4. (B) The serum CXCL13 proteins in recurrence. The serum levels of CXCL13 proteins in patients with recurrence were significantly elevated. (C) Patients with recurrence were classified into primary recurrence, neck LNM, and distant metastasis (including multiple responses). The serum levels of CXCL13 proteins in neck LNM were significantly elevated. * p < 0.05, ** p < 0.01.

Journal: Cancer Medicine

Article Title: Serum CXCL13 as a Novel Biomarker in Oral Squamous Cell Carcinoma

doi: 10.1002/cam4.70263

Figure Lengend Snippet: Serum CXCL13 and clinicopathological factors in patients with OSCC. (A) Serum CXCL13 protein levels in T classification. The serum CXCL13 proteins increased in accordance with primary tumor size. The serum CXCL13 levels in T1 were significantly higher than in T3 and T4. (B) The serum CXCL13 proteins in recurrence. The serum levels of CXCL13 proteins in patients with recurrence were significantly elevated. (C) Patients with recurrence were classified into primary recurrence, neck LNM, and distant metastasis (including multiple responses). The serum levels of CXCL13 proteins in neck LNM were significantly elevated. * p < 0.05, ** p < 0.01.

Article Snippet: TaqMan probes and primers for CXCL13 (Hs00757930_m1) and HMBS (Hs00609297_m1) were obtained from Thermo Fisher Scientific.

Techniques:

Serum CXCL13 and prognosis in patients with OSCC. A comparison of overall survival (OS) and disease‐free survival (DFS) in patients with OSCC was made among the two groups, which were classified based on the median serum CXCL13 level using the Kaplan–Meier method with a log‐rank test. High expression of serum CXCL13 indicated poor prognosis in both OS (A, p = 0.044) and DFS (B, p = 0.018) across all stages. In Stage I/II, the groups had no significant difference in OS (C, p = 0.696) and DFS (D, p = 0.435). In Stage III/IV, both OS (E, p = 0.020) and DFS (F, p = 0.009) were significantly poorer in patients with high CXCL13 levels.

Journal: Cancer Medicine

Article Title: Serum CXCL13 as a Novel Biomarker in Oral Squamous Cell Carcinoma

doi: 10.1002/cam4.70263

Figure Lengend Snippet: Serum CXCL13 and prognosis in patients with OSCC. A comparison of overall survival (OS) and disease‐free survival (DFS) in patients with OSCC was made among the two groups, which were classified based on the median serum CXCL13 level using the Kaplan–Meier method with a log‐rank test. High expression of serum CXCL13 indicated poor prognosis in both OS (A, p = 0.044) and DFS (B, p = 0.018) across all stages. In Stage I/II, the groups had no significant difference in OS (C, p = 0.696) and DFS (D, p = 0.435). In Stage III/IV, both OS (E, p = 0.020) and DFS (F, p = 0.009) were significantly poorer in patients with high CXCL13 levels.

Article Snippet: TaqMan probes and primers for CXCL13 (Hs00757930_m1) and HMBS (Hs00609297_m1) were obtained from Thermo Fisher Scientific.

Techniques: Comparison, Expressing

Visium spatial transcriptome analysis using two cases of primary OSCC tissues. (A) Case 1: Primary tongue SCC tissues were classified into eight clusters based on the gene expression profile. Among these, the tumor area comprised four clusters (Cluster 1, 3, 5, and 6). CXCL13 expression was upregulated in three of four clusters within the tumor area. CD8 expression was detected in all tumor clusters. (B) Case 2: In Case 2, primary tongue SCC tissues were classified into seven clusters. The tumor area consisted of four clusters (Clusters 1, 2, 3, and 6). The expression of CXCL13 and CD8 was upregulated in three of four clusters within the tumor area. CD4 expression was detected only in Cluster 2 in the tumor area but not in Case 1.

Journal: Cancer Medicine

Article Title: Serum CXCL13 as a Novel Biomarker in Oral Squamous Cell Carcinoma

doi: 10.1002/cam4.70263

Figure Lengend Snippet: Visium spatial transcriptome analysis using two cases of primary OSCC tissues. (A) Case 1: Primary tongue SCC tissues were classified into eight clusters based on the gene expression profile. Among these, the tumor area comprised four clusters (Cluster 1, 3, 5, and 6). CXCL13 expression was upregulated in three of four clusters within the tumor area. CD8 expression was detected in all tumor clusters. (B) Case 2: In Case 2, primary tongue SCC tissues were classified into seven clusters. The tumor area consisted of four clusters (Clusters 1, 2, 3, and 6). The expression of CXCL13 and CD8 was upregulated in three of four clusters within the tumor area. CD4 expression was detected only in Cluster 2 in the tumor area but not in Case 1.

Article Snippet: TaqMan probes and primers for CXCL13 (Hs00757930_m1) and HMBS (Hs00609297_m1) were obtained from Thermo Fisher Scientific.

Techniques: Gene Expression, Expressing

Differentially expressed genes in RASFsn-stimulated chondrocytes (FC ≥ 2; FC ≤ -2; RMA and GCOS)

Journal: Arthritis Research & Therapy

Article Title: Key regulatory molecules of cartilage destruction in rheumatoid arthritis: an in vitro study

doi: 10.1186/ar2358

Figure Lengend Snippet: Differentially expressed genes in RASFsn-stimulated chondrocytes (FC ≥ 2; FC ≤ -2; RMA and GCOS)

Article Snippet: Quantitative gene expression was analyzed for chemokine (C-X-C motif) receptor 4 ( CXCR4 , assay ID Hs00607978_s1), thioredoxin interacting protein ( TXNIP , Hs00197750_m1), chondroitin sulfate proteoglycan 2 ( CSPG2 , Hs00171642_m1), IFN-α inducible protein-6–16 ( IFI-6–16 , Hs00242571_m1), cyclooxygenase-2 ( COX-2 , Hs00153133_m1), cartilage oligomeric matrix protein ( COMP , Hs00164359_m1), steroid sulfatase ( STS , Hs00165853_m1) and glyceraldehyde-3-phosphate dehydrogenase ( GAPDH , Hs99999905_m1).

Techniques: Binding Assay, Dominant Negative Mutation

Validation of gene expression of stimulated chondrocytes by real-time RT-PCR. Semi-quantitative real-time RT-PCR of selected genes that were differentially expressed in chondrocytes stimulated with supernatant of a synovial fibroblast cell line derived from a patient with rheumatoid arthritis (RASFsn) as determined by microarray analysis was performed. Real-time RT-PCR gene expression analysis determined that the expression of cyclooxygenase-2 ( COX-2 ), interferon-α inducible protein-6–16 ( IFI-6–16 ) and chemokine (C-X-C motif) receptor 4 ( CXCR4 ) was significantly induced during stimulation of cartilage-like cultures with RASFsn compared with stimulation with supernatant of a synovial fibroblast cell line derived from normal donor (NDSFsn). The gene expression of steroid sulfatase ( STS ), chondroitin sulfate proteoglycan 2 ( CSPG2 ), cartilage oligomeric matrix protein ( COMP ) and thioredoxin interacting protein ( TXNIP ) was significantly repressed during stimulation with RASFsn. Consistent changes were observed between real-time RT-PCR and microarray analysis for all genes examined. The expression of selected genes was calculated as the percentage of glyceraldehyde-3-phosphate dehydrogenase ( GAPDH ) expression. The mean of each triplicate well of both experimental groups is plotted and the error bars represent SD. For statistical analysis, Students t-test was applied (*, P ≤ 0.05; ***, P ≤ 0.001).

Journal: Arthritis Research & Therapy

Article Title: Key regulatory molecules of cartilage destruction in rheumatoid arthritis: an in vitro study

doi: 10.1186/ar2358

Figure Lengend Snippet: Validation of gene expression of stimulated chondrocytes by real-time RT-PCR. Semi-quantitative real-time RT-PCR of selected genes that were differentially expressed in chondrocytes stimulated with supernatant of a synovial fibroblast cell line derived from a patient with rheumatoid arthritis (RASFsn) as determined by microarray analysis was performed. Real-time RT-PCR gene expression analysis determined that the expression of cyclooxygenase-2 ( COX-2 ), interferon-α inducible protein-6–16 ( IFI-6–16 ) and chemokine (C-X-C motif) receptor 4 ( CXCR4 ) was significantly induced during stimulation of cartilage-like cultures with RASFsn compared with stimulation with supernatant of a synovial fibroblast cell line derived from normal donor (NDSFsn). The gene expression of steroid sulfatase ( STS ), chondroitin sulfate proteoglycan 2 ( CSPG2 ), cartilage oligomeric matrix protein ( COMP ) and thioredoxin interacting protein ( TXNIP ) was significantly repressed during stimulation with RASFsn. Consistent changes were observed between real-time RT-PCR and microarray analysis for all genes examined. The expression of selected genes was calculated as the percentage of glyceraldehyde-3-phosphate dehydrogenase ( GAPDH ) expression. The mean of each triplicate well of both experimental groups is plotted and the error bars represent SD. For statistical analysis, Students t-test was applied (*, P ≤ 0.05; ***, P ≤ 0.001).

Article Snippet: Quantitative gene expression was analyzed for chemokine (C-X-C motif) receptor 4 ( CXCR4 , assay ID Hs00607978_s1), thioredoxin interacting protein ( TXNIP , Hs00197750_m1), chondroitin sulfate proteoglycan 2 ( CSPG2 , Hs00171642_m1), IFN-α inducible protein-6–16 ( IFI-6–16 , Hs00242571_m1), cyclooxygenase-2 ( COX-2 , Hs00153133_m1), cartilage oligomeric matrix protein ( COMP , Hs00164359_m1), steroid sulfatase ( STS , Hs00165853_m1) and glyceraldehyde-3-phosphate dehydrogenase ( GAPDH , Hs99999905_m1).

Techniques: Biomarker Discovery, Gene Expression, Quantitative RT-PCR, Derivative Assay, Microarray, Expressing

TaqMan gene expression IDs for target mRNAs

Journal: Physiological Genomics

Article Title: Gene expression profiling of the effects of organic dust in lung epithelial and THP-1 cells reveals inductive effects on inflammatory and immune response genes

doi: 10.1152/physiolgenomics.00096.2015

Figure Lengend Snippet: TaqMan gene expression IDs for target mRNAs

Article Snippet: TaqMan gene expression IDs for target mRNAs are listed in . table ft1 table-wrap mode="anchored" t5 Table 1. caption a7 Gene Symbol Gene Name Human Assay ID IL-1β interleukin-1beta Hs01555410_m1 IL-6 interleukin-6 Hs00985639_m1 IL-8 interleukin-8 Hs00174103_m1 ICAM-1 intercellular adhesion molecule-1 Hs00164932_m1 CCL2 chemokine (C-C motif) ligand 2 Hs00234140_m1 CCL5 Hs00982282_m1 Cyr61 Hs00998500_g1 TLR4 toll-like receptor-4 Hs00152939_m1 SOD2 Hs00167309_m1 PTGS2 prostaglandin-endoperoxide synthase 2 (prostaglandin G/H synthase and cyclo-oxygenase) Hs00153133_m1 18S 18S ribosomal RNA Hs99999901_s1 Open in a separate window TaqMan gene expression IDs for target mRNAs DNA microarray analysis.

Techniques: Expressing

mRNAs with increased ribosome association after depletion of KSRP The increase in polysome association (mean of two experiments) of mRNAs from HeLa cells transfected with siRNA against KSRP or against GFP as a control and stimulated with IL-1α for 2 h is shown. Polysome association was calculated as the ratio of signals obtained in the microarray analysis of total RNA of pooled fractions 6–9 (“translated”) over fractions 2–4 (“untranslated”) after gradient centrifugation of cytoplasmic extracts (see B ). GenBank accession numbers are cited in parentheses. cds, coding sequence.

Journal: The Journal of Biological Chemistry

Article Title: Interleukin-1 Activates Synthesis of Interleukin-6 by Interfering with a KH-type Splicing Regulatory Protein (KSRP)-dependent Translational Silencing Mechanism *

doi: 10.1074/jbc.M111.264754

Figure Lengend Snippet: mRNAs with increased ribosome association after depletion of KSRP The increase in polysome association (mean of two experiments) of mRNAs from HeLa cells transfected with siRNA against KSRP or against GFP as a control and stimulated with IL-1α for 2 h is shown. Polysome association was calculated as the ratio of signals obtained in the microarray analysis of total RNA of pooled fractions 6–9 (“translated”) over fractions 2–4 (“untranslated”) after gradient centrifugation of cytoplasmic extracts (see B ). GenBank accession numbers are cited in parentheses. cds, coding sequence.

Article Snippet: Reverse transcription and quantitative PCR (RT-qPCR) were carried out as described ( 27 ) using TaqMan kits (Applied Biosystems assay identification numbers Hs00174131_m1 for IL-6 mRNA, Hs00174092_m1 for IL-1α mRNA, Hs99999905_m1 for GAPDH mRNA, and Hs00174103_m1 for IL-8 mRNA and a custom-made assay for rabbit β-globin mRNA).

Techniques: Transfection, Control, Microarray, Gradient Centrifugation, Sequencing, Variant Assay, Virus

The 3′-UTR of IL-6 mRNA suppresses translation. A, cells were transfected with siRNAs specific for GFP or KSRP mRNAs as in Fig. 1 but left without IL-1 treatment. Polysome profiles for endogenous IL-6 mRNA (end. IL-6) or ectopically expressed IL-6 mRNA (ectop. IL-6) were obtained by RT-qPCR. B, distribution profiles of chimeric mRNAs in which the 5′-UTR, coding sequence (CDS), or 3′-UTR of IL-6 was replaced by the corresponding part of β-globin mRNA (see scheme) were obtained by RT-qPCR for IL-6 mRNA or for β-globin mRNA (IL6-B-IL6 and B-B-IL6). The distribution of GAPDH mRNA is shown to allow comparison of the gradient separations. C, cells were transfected with expression vectors for IL-6 with its own (IL6-IL6-IL6) or β-globin 3′-UTR (IL6-IL6-B). The next day medium was exchanged. 2 h later, the culture medium was collected, and IL-6 protein release was quantified by ELISA. The cells were lysed, and IL-6 mRNA was determined by RT-qPCR. Results show the -fold change for the amounts of RNA and protein for IL6-IL6-B as compared with those of IL6-IL6-IL6 (mean ± S.D., n = 5). D, in vitro transcribed IL-6 RNA containing its own (IL6-IL6-IL6) or the β-globin 3′-UTR (IL6-IL6-B) or firefly luciferase RNA were subjected to in vitro translation reactions with reticulocyte lysates and [35S]methionine. The samples were separated by SDS-PAGE, and proteins were visualized by autoradiography. Results from one of two independent assays with similar results are shown.

Journal: The Journal of Biological Chemistry

Article Title: Interleukin-1 Activates Synthesis of Interleukin-6 by Interfering with a KH-type Splicing Regulatory Protein (KSRP)-dependent Translational Silencing Mechanism *

doi: 10.1074/jbc.M111.264754

Figure Lengend Snippet: The 3′-UTR of IL-6 mRNA suppresses translation. A, cells were transfected with siRNAs specific for GFP or KSRP mRNAs as in Fig. 1 but left without IL-1 treatment. Polysome profiles for endogenous IL-6 mRNA (end. IL-6) or ectopically expressed IL-6 mRNA (ectop. IL-6) were obtained by RT-qPCR. B, distribution profiles of chimeric mRNAs in which the 5′-UTR, coding sequence (CDS), or 3′-UTR of IL-6 was replaced by the corresponding part of β-globin mRNA (see scheme) were obtained by RT-qPCR for IL-6 mRNA or for β-globin mRNA (IL6-B-IL6 and B-B-IL6). The distribution of GAPDH mRNA is shown to allow comparison of the gradient separations. C, cells were transfected with expression vectors for IL-6 with its own (IL6-IL6-IL6) or β-globin 3′-UTR (IL6-IL6-B). The next day medium was exchanged. 2 h later, the culture medium was collected, and IL-6 protein release was quantified by ELISA. The cells were lysed, and IL-6 mRNA was determined by RT-qPCR. Results show the -fold change for the amounts of RNA and protein for IL6-IL6-B as compared with those of IL6-IL6-IL6 (mean ± S.D., n = 5). D, in vitro transcribed IL-6 RNA containing its own (IL6-IL6-IL6) or the β-globin 3′-UTR (IL6-IL6-B) or firefly luciferase RNA were subjected to in vitro translation reactions with reticulocyte lysates and [35S]methionine. The samples were separated by SDS-PAGE, and proteins were visualized by autoradiography. Results from one of two independent assays with similar results are shown.

Article Snippet: Reverse transcription and quantitative PCR (RT-qPCR) were carried out as described ( 27 ) using TaqMan kits (Applied Biosystems assay identification numbers Hs00174131_m1 for IL-6 mRNA, Hs00174092_m1 for IL-1α mRNA, Hs99999905_m1 for GAPDH mRNA, and Hs00174103_m1 for IL-8 mRNA and a custom-made assay for rabbit β-globin mRNA).

Techniques: Transfection, Quantitative RT-PCR, Sequencing, Comparison, Expressing, Enzyme-linked Immunosorbent Assay, In Vitro, Luciferase, SDS Page, Autoradiography

Localization of sequences involved in translational silencing of IL-6 mRNA. A, scheme of IL-6 mRNA and constructs expressed. Numbers indicate nt positions at the ends of deleted or inserted sequences. B, polysome profiles of IL-6 mRNA lacking nt 828–1002 (IL6ΔARE) or containing only nt 816–1024 of its 3′-UTR (IL6 ARE I) were obtained as described for Fig. 2B. For comparison of the gradients, the corresponding profiles of GAPDH mRNA are shown in the lower panel. C, polysome profiles of endogenous IL-6 mRNA (end. IL-6), ectopically expressed IL-6 mRNA containing the complete 3′-UTR (ectop. IL-6), or its derivative containing only nt 857–987 of its 3′-UTR (IL-6ARE II) were compared for cells incubated without (con) or with IL-1α (2 ng/ml) (IL-1) for 1 h. D, comparison of polysome profiles for ectopically expressed IL-6 mRNA without (IL-6) or with mutations that destroy the seed region for miR-126 (IL-6 miR-mu) (upper panel) and for IL-6 miR-mu mRNA in cells incubated without (con) or with IL-1α (IL-1) for 1 h (lower panel).

Journal: The Journal of Biological Chemistry

Article Title: Interleukin-1 Activates Synthesis of Interleukin-6 by Interfering with a KH-type Splicing Regulatory Protein (KSRP)-dependent Translational Silencing Mechanism *

doi: 10.1074/jbc.M111.264754

Figure Lengend Snippet: Localization of sequences involved in translational silencing of IL-6 mRNA. A, scheme of IL-6 mRNA and constructs expressed. Numbers indicate nt positions at the ends of deleted or inserted sequences. B, polysome profiles of IL-6 mRNA lacking nt 828–1002 (IL6ΔARE) or containing only nt 816–1024 of its 3′-UTR (IL6 ARE I) were obtained as described for Fig. 2B. For comparison of the gradients, the corresponding profiles of GAPDH mRNA are shown in the lower panel. C, polysome profiles of endogenous IL-6 mRNA (end. IL-6), ectopically expressed IL-6 mRNA containing the complete 3′-UTR (ectop. IL-6), or its derivative containing only nt 857–987 of its 3′-UTR (IL-6ARE II) were compared for cells incubated without (con) or with IL-1α (2 ng/ml) (IL-1) for 1 h. D, comparison of polysome profiles for ectopically expressed IL-6 mRNA without (IL-6) or with mutations that destroy the seed region for miR-126 (IL-6 miR-mu) (upper panel) and for IL-6 miR-mu mRNA in cells incubated without (con) or with IL-1α (IL-1) for 1 h (lower panel).

Article Snippet: Reverse transcription and quantitative PCR (RT-qPCR) were carried out as described ( 27 ) using TaqMan kits (Applied Biosystems assay identification numbers Hs00174131_m1 for IL-6 mRNA, Hs00174092_m1 for IL-1α mRNA, Hs99999905_m1 for GAPDH mRNA, and Hs00174103_m1 for IL-8 mRNA and a custom-made assay for rabbit β-globin mRNA).

Techniques: Construct, Comparison, Incubation

Direct and ARE-dependent interaction of KSRP with IL-6 mRNA. A, cells expressing Strep-tagged KSRP (stKSRP) or GFP (stGFP) were incubated without (control) or with IL-1α (IL-1) for 30 min and lysed, and tagged proteins were enriched by pulldown with Strep-Tactin-coated beads (see “Experimental Procedures”). Shown are the ratios of the amounts of the indicated mRNAs determined by RT-qPCR in the pulldown and input samples. Note that IL-1α mRNA was not detected in untreated HeLa cells (nd, not detected). B, after stimulation of cells with IL-1α for the indicated times, cytoplasmic and nuclear fractions were prepared and analyzed by Western blotting using antibodies against KSRP, against α-tubulin and ATF1 as controls for fractionation quality, and against NF-κB p65 to control IL-1 responsiveness. C, enrichment of complete IL-6 mRNA or of IL-6 mRNA in which its 3′-UTR was exchanged with that of β-globin (IL6-IL6-B) or that lacks nt 828–1002 (ΔARE) after pulldown with Strep-tagged GFP or Strep-tagged KSRP was determined as in A. D, cytoplasmic (cyt.) lysate or purified Strep-tagged KSRP (200 ng) was incubated with in vitro transcribed radiolabeled RNA comprising the IL-6 3′-UTR with (3′ UTR) or without nt 828 to 1002 (ΔARE). Samples were subjected to non-denaturing gel electrophoresis. The autoradiograph shows protein-RNA complexes and part of the free RNA products.

Journal: The Journal of Biological Chemistry

Article Title: Interleukin-1 Activates Synthesis of Interleukin-6 by Interfering with a KH-type Splicing Regulatory Protein (KSRP)-dependent Translational Silencing Mechanism *

doi: 10.1074/jbc.M111.264754

Figure Lengend Snippet: Direct and ARE-dependent interaction of KSRP with IL-6 mRNA. A, cells expressing Strep-tagged KSRP (stKSRP) or GFP (stGFP) were incubated without (control) or with IL-1α (IL-1) for 30 min and lysed, and tagged proteins were enriched by pulldown with Strep-Tactin-coated beads (see “Experimental Procedures”). Shown are the ratios of the amounts of the indicated mRNAs determined by RT-qPCR in the pulldown and input samples. Note that IL-1α mRNA was not detected in untreated HeLa cells (nd, not detected). B, after stimulation of cells with IL-1α for the indicated times, cytoplasmic and nuclear fractions were prepared and analyzed by Western blotting using antibodies against KSRP, against α-tubulin and ATF1 as controls for fractionation quality, and against NF-κB p65 to control IL-1 responsiveness. C, enrichment of complete IL-6 mRNA or of IL-6 mRNA in which its 3′-UTR was exchanged with that of β-globin (IL6-IL6-B) or that lacks nt 828–1002 (ΔARE) after pulldown with Strep-tagged GFP or Strep-tagged KSRP was determined as in A. D, cytoplasmic (cyt.) lysate or purified Strep-tagged KSRP (200 ng) was incubated with in vitro transcribed radiolabeled RNA comprising the IL-6 3′-UTR with (3′ UTR) or without nt 828 to 1002 (ΔARE). Samples were subjected to non-denaturing gel electrophoresis. The autoradiograph shows protein-RNA complexes and part of the free RNA products.

Article Snippet: Reverse transcription and quantitative PCR (RT-qPCR) were carried out as described ( 27 ) using TaqMan kits (Applied Biosystems assay identification numbers Hs00174131_m1 for IL-6 mRNA, Hs00174092_m1 for IL-1α mRNA, Hs99999905_m1 for GAPDH mRNA, and Hs00174103_m1 for IL-8 mRNA and a custom-made assay for rabbit β-globin mRNA).

Techniques: Expressing, Incubation, Control, Quantitative RT-PCR, Western Blot, Fractionation, Purification, In Vitro, Nucleic Acid Electrophoresis, Autoradiography