rlt buffer  (Qiagen)


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    Qiagen rlt buffer
    Rlt Buffer, supplied by Qiagen, used in various techniques. Bioz Stars score: 99/100, based on 1367 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/result/rlt buffer/product/Qiagen
    Average 99 stars, based on 1367 article reviews
    Price from $9.99 to $1999.99
    rlt buffer - by Bioz Stars, 2020-04
    99/100 stars

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    Qiagen rlt buffer
    Depleting the microbiota limits infant Ccl2 expression and accelerates pneumococcal clearance. (A) Breeding pairs were placed on sterile filtered tap water or water containing 5 antibiotics (Abx) for at least 5 days prior to giving birth, and continued until the infant mice were 10d old. Mice were sacrificed, and nasal lavages obtained with PBS. DNA was isolated from lavage fluid, and qPCR used to measure the number of copies of 16S bacterial ribosomal DNA. (B-C) Adult mice were maintained on sterile filtered tap water or water containing 5 antibiotics for at least 2 weeks. Breeding pairs were provided water as above. Mice were sacrificed, and nasal lavages obtained with <t>RLT</t> lysis buffer. RNA was isolated and reverse-transcribed into cDNA, and <t>qRT-PCR</t> used to measure relative expression of Ccl2 (B) and Ccl7 (C) in the nasopharynx. (D) Infant mice were exposed to tap water or antibiotics as in the previously described protocol. Treatments were continued until infant mice were 6d old, then all mice were given tap water to drink. 24 hrs later, mice were inoculated with pneumococci. At 7 dpi, mice were sacrificed and nasal lavages fixed and stained for flow cytometry to measure the number of macrophages present in the airway lumen. (E-F) Infant mice were treated as in (D). At 14d (E) and 7d (F) post-inoculation, mice were sacrificed. Nasal lavages were obtained and plated on media containing neomycin and catalase to measure pneumococcal density in the URT. (G) Ccl2 expression was measured in the nasopharynx of tap- or antibiotic-water exposed conventionally-reared (Conv), or germ-free infant mice. Data are represented as mean +/- SEM. Horizontal lines indicate median values. n.s., not significant. * = p
    Rlt Buffer, supplied by Qiagen, used in various techniques. Bioz Stars score: 99/100, based on 1553 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/result/rlt buffer/product/Qiagen
    Average 99 stars, based on 1553 article reviews
    Price from $9.99 to $1999.99
    rlt buffer - by Bioz Stars, 2020-04
    99/100 stars
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    Depleting the microbiota limits infant Ccl2 expression and accelerates pneumococcal clearance. (A) Breeding pairs were placed on sterile filtered tap water or water containing 5 antibiotics (Abx) for at least 5 days prior to giving birth, and continued until the infant mice were 10d old. Mice were sacrificed, and nasal lavages obtained with PBS. DNA was isolated from lavage fluid, and qPCR used to measure the number of copies of 16S bacterial ribosomal DNA. (B-C) Adult mice were maintained on sterile filtered tap water or water containing 5 antibiotics for at least 2 weeks. Breeding pairs were provided water as above. Mice were sacrificed, and nasal lavages obtained with RLT lysis buffer. RNA was isolated and reverse-transcribed into cDNA, and qRT-PCR used to measure relative expression of Ccl2 (B) and Ccl7 (C) in the nasopharynx. (D) Infant mice were exposed to tap water or antibiotics as in the previously described protocol. Treatments were continued until infant mice were 6d old, then all mice were given tap water to drink. 24 hrs later, mice were inoculated with pneumococci. At 7 dpi, mice were sacrificed and nasal lavages fixed and stained for flow cytometry to measure the number of macrophages present in the airway lumen. (E-F) Infant mice were treated as in (D). At 14d (E) and 7d (F) post-inoculation, mice were sacrificed. Nasal lavages were obtained and plated on media containing neomycin and catalase to measure pneumococcal density in the URT. (G) Ccl2 expression was measured in the nasopharynx of tap- or antibiotic-water exposed conventionally-reared (Conv), or germ-free infant mice. Data are represented as mean +/- SEM. Horizontal lines indicate median values. n.s., not significant. * = p

    Journal: PLoS Pathogens

    Article Title: Clearance of Pneumococcal Colonization in Infants Is Delayed through Altered Macrophage Trafficking

    doi: 10.1371/journal.ppat.1005004

    Figure Lengend Snippet: Depleting the microbiota limits infant Ccl2 expression and accelerates pneumococcal clearance. (A) Breeding pairs were placed on sterile filtered tap water or water containing 5 antibiotics (Abx) for at least 5 days prior to giving birth, and continued until the infant mice were 10d old. Mice were sacrificed, and nasal lavages obtained with PBS. DNA was isolated from lavage fluid, and qPCR used to measure the number of copies of 16S bacterial ribosomal DNA. (B-C) Adult mice were maintained on sterile filtered tap water or water containing 5 antibiotics for at least 2 weeks. Breeding pairs were provided water as above. Mice were sacrificed, and nasal lavages obtained with RLT lysis buffer. RNA was isolated and reverse-transcribed into cDNA, and qRT-PCR used to measure relative expression of Ccl2 (B) and Ccl7 (C) in the nasopharynx. (D) Infant mice were exposed to tap water or antibiotics as in the previously described protocol. Treatments were continued until infant mice were 6d old, then all mice were given tap water to drink. 24 hrs later, mice were inoculated with pneumococci. At 7 dpi, mice were sacrificed and nasal lavages fixed and stained for flow cytometry to measure the number of macrophages present in the airway lumen. (E-F) Infant mice were treated as in (D). At 14d (E) and 7d (F) post-inoculation, mice were sacrificed. Nasal lavages were obtained and plated on media containing neomycin and catalase to measure pneumococcal density in the URT. (G) Ccl2 expression was measured in the nasopharynx of tap- or antibiotic-water exposed conventionally-reared (Conv), or germ-free infant mice. Data are represented as mean +/- SEM. Horizontal lines indicate median values. n.s., not significant. * = p

    Article Snippet: qRT-PCR RNA was obtained from URT epithelium by lavage with RLT buffer (Qiagen) with 1% β-mercaptoethanol, or from cultured peritoneal macrophages by lysing cells in RLT buffer with 1% β-mercaptoethanol and frozen at -80°C until used.

    Techniques: Expressing, Mouse Assay, Isolation, Real-time Polymerase Chain Reaction, Lysis, Quantitative RT-PCR, Staining, Flow Cytometry, Cytometry

    Infant mice do not form a gradient of CCL2 expression during colonization. (A) Adult (42d old) and infant (7d old) mice were inoculated with PBS (mock) or pneumococci. At 3d post-inoculation, nasal lavages were obtained with RLT lysis buffer, and RNA was isolated and reverse transcribed to cDNA. qRT-PCR was performed to measure relative expression of Ccl2 . (B) Serum was obtained from adult and infant mice, and ELISA used to measure CCL2 levels. (C-D) Peritoneal macrophages from adult and infant mice were lysed with RLT buffer and RNA isolated. qRT-PCR was used to measure relative expression of Ccl2 (C) and Ccr2 (D). In (C), cultured macrophages were incubated overnight with PBS (Mock) or heat-killed bacterial lysates (Stim) prior to lysis. (E-H) Uncolonized adult and infant mice were sacrificed, and nasal lavages obtained with RLT lysis buffer. RNA was isolated and reverse-transcribed into cDNA. qRT-PCR was used to measure relative expression of Ccl7 , (E) Il6 , (F) Cxcl1 , (G) and Cxcl2 (H). Data are represented as mean +/- SEM. n.s., not significant. * = p

    Journal: PLoS Pathogens

    Article Title: Clearance of Pneumococcal Colonization in Infants Is Delayed through Altered Macrophage Trafficking

    doi: 10.1371/journal.ppat.1005004

    Figure Lengend Snippet: Infant mice do not form a gradient of CCL2 expression during colonization. (A) Adult (42d old) and infant (7d old) mice were inoculated with PBS (mock) or pneumococci. At 3d post-inoculation, nasal lavages were obtained with RLT lysis buffer, and RNA was isolated and reverse transcribed to cDNA. qRT-PCR was performed to measure relative expression of Ccl2 . (B) Serum was obtained from adult and infant mice, and ELISA used to measure CCL2 levels. (C-D) Peritoneal macrophages from adult and infant mice were lysed with RLT buffer and RNA isolated. qRT-PCR was used to measure relative expression of Ccl2 (C) and Ccr2 (D). In (C), cultured macrophages were incubated overnight with PBS (Mock) or heat-killed bacterial lysates (Stim) prior to lysis. (E-H) Uncolonized adult and infant mice were sacrificed, and nasal lavages obtained with RLT lysis buffer. RNA was isolated and reverse-transcribed into cDNA. qRT-PCR was used to measure relative expression of Ccl7 , (E) Il6 , (F) Cxcl1 , (G) and Cxcl2 (H). Data are represented as mean +/- SEM. n.s., not significant. * = p

    Article Snippet: qRT-PCR RNA was obtained from URT epithelium by lavage with RLT buffer (Qiagen) with 1% β-mercaptoethanol, or from cultured peritoneal macrophages by lysing cells in RLT buffer with 1% β-mercaptoethanol and frozen at -80°C until used.

    Techniques: Mouse Assay, Expressing, Lysis, Isolation, Quantitative RT-PCR, Enzyme-linked Immunosorbent Assay, Cell Culture, Incubation

    CCL2 overexpression increases macrophage recruitment and pneumococcal clearance. (A-C) Mice were inoculated with a control (GFP-expressing) or a CCL2-expressing AAV5 vector at 4d of age, followed by pneumococcal colonization at 7d old. Seven and 21 days later, mice were sacrificed and nasal lavages were obtained with RLT lysis buffer. (A) RNA was isolated and cDNA reverse-transcribed, followed by qRT-PCR to measure the relative expression of Ccl2 in the upper respiratory tract, using primers Ccl2 ORF-F and Ccl2 ORF-R. ELISA was used to measure CCL2 protein levels in nasal lavage (B) and serum (C) at 7 and 21 dpi. (D) Mice were inoculated with a control (GFP-expressing) or a CCL2-expressing AAV5 vector at 4d of age, followed by pneumococcal colonization at 7d of age. Seven days later, mice were sacrificed, nasal lavages obtained and flow cytometry used to measure macrophage recruitment. (E) At 21d post-inoculation, nasal lavages were obtained and plated to measure the pneumococcal load in the nasopharynx. Data are represented as mean +/- SEM. n.s., not significant. * = p

    Journal: PLoS Pathogens

    Article Title: Clearance of Pneumococcal Colonization in Infants Is Delayed through Altered Macrophage Trafficking

    doi: 10.1371/journal.ppat.1005004

    Figure Lengend Snippet: CCL2 overexpression increases macrophage recruitment and pneumococcal clearance. (A-C) Mice were inoculated with a control (GFP-expressing) or a CCL2-expressing AAV5 vector at 4d of age, followed by pneumococcal colonization at 7d old. Seven and 21 days later, mice were sacrificed and nasal lavages were obtained with RLT lysis buffer. (A) RNA was isolated and cDNA reverse-transcribed, followed by qRT-PCR to measure the relative expression of Ccl2 in the upper respiratory tract, using primers Ccl2 ORF-F and Ccl2 ORF-R. ELISA was used to measure CCL2 protein levels in nasal lavage (B) and serum (C) at 7 and 21 dpi. (D) Mice were inoculated with a control (GFP-expressing) or a CCL2-expressing AAV5 vector at 4d of age, followed by pneumococcal colonization at 7d of age. Seven days later, mice were sacrificed, nasal lavages obtained and flow cytometry used to measure macrophage recruitment. (E) At 21d post-inoculation, nasal lavages were obtained and plated to measure the pneumococcal load in the nasopharynx. Data are represented as mean +/- SEM. n.s., not significant. * = p

    Article Snippet: qRT-PCR RNA was obtained from URT epithelium by lavage with RLT buffer (Qiagen) with 1% β-mercaptoethanol, or from cultured peritoneal macrophages by lysing cells in RLT buffer with 1% β-mercaptoethanol and frozen at -80°C until used.

    Techniques: Over Expression, Mouse Assay, Expressing, Plasmid Preparation, Lysis, Isolation, Quantitative RT-PCR, Enzyme-linked Immunosorbent Assay, Flow Cytometry, Cytometry

    Asymmetric competition is dependent on direct interactions between resident and challenger pneumococci. a, Day 4–5 old pups were inoculated with a heat-killed serotype 23F resident strain (10 5 CFU) for 6h before introduction of the live isogenic challenger strain with increasing CFU (10 1 -10 3 ). Nasal lavages were cultured 3 days later to determine challenger colonization densities, n=3–4. Median values are shown. b, Pups were inoculated with live (10 3 CFU) or heat-killed (10 5 CFU) resident strain for 6h and nasal lavages with RLT lysis buffer were obtained to isolate host RNA. Early inflammatory cytokine expression levels were assessed by SYBR green real-time quantitative RT-PCR. Cytokine expression induced by heat-killed S. pneumoniae were shown as fold change relative to that elicited by live bacteria, n=5–6. Data are shown as mean ± SEM. c-d, Pups were inoculated with either a streptomycin sensitive ( c ) or resistant ( d ) resident strain for 3 days before intranasal administration of streptomycin. An isogenic streptomycin resistant challenger was inoculated 6h later and its colonization density determined after 3 days. Median values are shown. Colonization levels by 10 1 CFU challenger alone, and in resident-colonized pups treated with either phosphate buffered saline (PBS) or streptomycin, were compared by Kruskal–Wallis one-way analysis of variance in ( d ), n=4–8, * p

    Journal: Nature microbiology

    Article Title: Pneumococcal quorum sensing drives an asymmetric owner-intruder competitive strategy during carriage via the competence regulon

    doi: 10.1038/s41564-018-0314-4

    Figure Lengend Snippet: Asymmetric competition is dependent on direct interactions between resident and challenger pneumococci. a, Day 4–5 old pups were inoculated with a heat-killed serotype 23F resident strain (10 5 CFU) for 6h before introduction of the live isogenic challenger strain with increasing CFU (10 1 -10 3 ). Nasal lavages were cultured 3 days later to determine challenger colonization densities, n=3–4. Median values are shown. b, Pups were inoculated with live (10 3 CFU) or heat-killed (10 5 CFU) resident strain for 6h and nasal lavages with RLT lysis buffer were obtained to isolate host RNA. Early inflammatory cytokine expression levels were assessed by SYBR green real-time quantitative RT-PCR. Cytokine expression induced by heat-killed S. pneumoniae were shown as fold change relative to that elicited by live bacteria, n=5–6. Data are shown as mean ± SEM. c-d, Pups were inoculated with either a streptomycin sensitive ( c ) or resistant ( d ) resident strain for 3 days before intranasal administration of streptomycin. An isogenic streptomycin resistant challenger was inoculated 6h later and its colonization density determined after 3 days. Median values are shown. Colonization levels by 10 1 CFU challenger alone, and in resident-colonized pups treated with either phosphate buffered saline (PBS) or streptomycin, were compared by Kruskal–Wallis one-way analysis of variance in ( d ), n=4–8, * p

    Article Snippet: To obtain host RNA, nasal lavages with RLT lysis buffer (Qiagen) were performed and RNA isolated with the RNeasy minikit (Qiagen) as previously described . cDNA was reverse transcribed using a high-capacity cDNA kit (Applied Biosystems) following the manufacturer’s instructions.

    Techniques: Cell Culture, Lysis, Expressing, SYBR Green Assay, Quantitative RT-PCR

    RNA integrity of some RNA samples after enrichment with buffer RLT, Triton X-100 and bead beating. Electropherogram profiles were determined with a Fragment Analyzer. Quality for Fragment Analyzer is shown as the RQN value. Reported on a scale of 1 to 10, with higher values indicating a better quality of total RNA. Values above 7 are considered to represent high quality and non-degraded RNA.

    Journal: Scientific Reports

    Article Title: Nucleic acids enrichment of fungal pathogens to study host-pathogen interactions

    doi: 10.1038/s41598-019-54608-x

    Figure Lengend Snippet: RNA integrity of some RNA samples after enrichment with buffer RLT, Triton X-100 and bead beating. Electropherogram profiles were determined with a Fragment Analyzer. Quality for Fragment Analyzer is shown as the RQN value. Reported on a scale of 1 to 10, with higher values indicating a better quality of total RNA. Values above 7 are considered to represent high quality and non-degraded RNA.

    Article Snippet: In addition, using qPCR and RT-qPCR, we demonstrated that after cell lysis with Buffer RLT, both fungal DNA and RNA can be further enriched by means of a centrifugation step that effectively reduced human nucleic acids.

    Techniques:

    Ebola virus inactivation results as tested in BALB/c mouse model. A) Survival in animal groups tested with samples inactivated by guanidinium isothiocyanate buffers. AVL140, 140 µL Buffer AVL (QIAGEN, Valencia, CA, USA) + 560 µL sample; AVL100, 100 µL Buffer AVL + 600 µL sample; RLT600, 600 µL Buffer RLT (QIAGEN) treatment of cells; RLT800, 800 µL Buffer RLT treatment of cells; + ethanol, after a Buffer AVL or Buffer RLT inactivation contact time of 10 min, addition of 100% or 70% ethanol, respectively, for an additional 20 min of contact time. B) Survival in animal groups tested with samples inactivated by fixative or detergent buffers. For all test groups, n = 15; for all control groups, n = 5.

    Journal: Emerging Infectious Diseases

    Article Title: Effective Chemical Inactivation of Ebola Virus

    doi: 10.3201/eid2207.160233

    Figure Lengend Snippet: Ebola virus inactivation results as tested in BALB/c mouse model. A) Survival in animal groups tested with samples inactivated by guanidinium isothiocyanate buffers. AVL140, 140 µL Buffer AVL (QIAGEN, Valencia, CA, USA) + 560 µL sample; AVL100, 100 µL Buffer AVL + 600 µL sample; RLT600, 600 µL Buffer RLT (QIAGEN) treatment of cells; RLT800, 800 µL Buffer RLT treatment of cells; + ethanol, after a Buffer AVL or Buffer RLT inactivation contact time of 10 min, addition of 100% or 70% ethanol, respectively, for an additional 20 min of contact time. B) Survival in animal groups tested with samples inactivated by fixative or detergent buffers. For all test groups, n = 15; for all control groups, n = 5.

    Article Snippet: We used Buffer AVL and Buffer RLT (QIAGEN, Valencia, CA, USA) and TRIzol (Life Technologies, Grand Island, NY, USA) according to manufacturers’ recommendations.

    Techniques: