anti wdr5 121  (Proteintech)

Journal: bioRxiv

Article Title: SAGA/ATAC complexes sustain aberrant chromatin regulation and promote tumorigenesis in diffuse midline glioma

doi: 10.64898/2026.01.22.701194

Figure Lengend Snippet: a, Growth curves of SU-DIPGXIII cells transduced with shRNAs to knockdown both KAT2A and KAT2B, showing significantly reduced growth compared to control shRNA-transduced cells. b, Number of live SU-DIPGXIII+Cas9 cells expressing a control plasmid (HA/flag-GFP) or sgRNAs to KO SAGA-associated acetyltransferase activity ( TADA2B sgRNAs), or de-ubiquitinase activity ( ENY2 sgRNA). c, Schematic illustrating inhibition of histone-modifying modules of SAGA/ATAC complexes using chemical probes to target SAGA/ATAC-dependent histone acetylation (GSK4027, CPTH2, garcinol), SAGA-dependent H2A/H2B de-ubiquitination (USP22si-02), or WDR5-mediated H3K4me3 methylation (OICR-9529, WM856, WDR5-IN-4, and WDR5-IN-6). d, Average normalized cell viability from CellTiter-Glo assays conducted seven days after starting treatment of H3K27M mutant cells (teal curves) or non-transformed, H3 wildtype, control cells (black curves) with increasing doses of the KAT2A/2B bromodomain-targeting acetyltransferase inhibitor, GSK4027. e, Immunoblots confirming that treatment of BT245 cells with GSK4027 reduced H3K9ac in a dose-dependent manner, but not total H3 or SGF29 protein abundance. f-h, Dose response curves showing inhibition of H3K27M mutant DMG cell viability, but no effect on control H3 wild-type cells (black curves) following seven days of treatment with the DUB inhibitor, USP22i-S02 ( f, yellow curves), the WDR5 WIN site inhibitor, WDR5-IN-4 ( g, blue curves), or the WDR5 WBM site inhibitor, WDR5-IN-6 ( h, blue curves). i-j Average number of live SU-DIPGXIIIP*+ZsG/luc cells ( i ), and average BT245 ( j ) cell viability (CellTiter-Glo) following treatment with combinations of GSK4027 and USP22si-02 to simultaneously target both SAGA/ATAC-dependent histone acetyltransferase activity and SAGA-dependent H2A/H2B de-ubiquitination. k-l, BLISS synergy plots showing a combined effect of GSK4027 and WDR5-IN-6 treatment in reducing SU-DIPGXIIIP*+ZsG/luc growth ( k, **p<1.74×10 -3 ), and a combined effect of GSK4027 and WDR5-IN-4 treatment in reducing BT245 cell growth ( l , ****p<2.5×10 -10 ).

Article Snippet: The following compounds were used in this study: SGF29-IN-1 (cat# HY-158009, MedChemExpress), GSK4027 (cat# SML2018, Sigma Aldrich), CPTH2 (cat# J65939LB0, ThermoFisher), garcinol (cat# 14076, Active Motif), USP22si-02 (cat# SML3875, Sigma Aldrich), WDR5-IN-4 (WIN site inhibitor, cat# HY-111753, MedChemExpress), WDR5-IN-6 (WBM site inhibitor, cat# T77495, TargetMol), OICR9429 (cat# T6916, TargetMol), WM586 (WDR5/Myc inhibitor, cat# HY-153728, MedChemExpress), YM-53601 (cat# HY-100313A, MedChemExpress), NB-598 (cat# HY-16343, MedChemExpress), terbinafine (cat# T3677, TCI Chemicals), Atorvastatin (cat# SML3030, Sigma Aldrich), and Pitavastatin (cat# AMBH2D6EF677, Ambeed)

Techniques: Transduction, Knockdown, Control, shRNA, Expressing, Plasmid Preparation, Activity Assay, Inhibition, Ubiquitin Proteomics, Methylation, Mutagenesis, Transformation Assay, Western Blot, Quantitative Proteomics

Journal: Cancer Communications

Article Title: Hypoxia-Induced Osteopontin-Positive Glioma-Associated Macrophages Facilitate Glioma Mesenchymal Transition via NF-κB Pathway Activation

doi: 10.34133/cancomm.0007

Figure Lengend Snippet: Hypoxia-induced epigenetic regulation contributes to increased OPN expression. (A) Western blotting showing the levels of HIF-1α, H3K4me3, H3K9me3, H3K27me3, and H3 in THP-1 and U937 cells exposed to 1% O 2 for the indicated durations. (B) IF staining showing the levels of HIF-1α, H3K4me3, H3K9me3, and H3K27me3 in THP-1 cells exposed to 1% O 2 for the indicated durations. The target proteins are shown in green. DAPI was used to stain the nuclei, and F-actin was labeled to delineate the cytoplasmic region (scale bar = 40 μm). (C) qPCR analysis of H3K4me3 enrichment at SPP1 promoter area in THP-1 cells under indicated treatment conditions ( n = 3 per group; normoxia, normoxic culture for 24 h; hypoxia, hypoxic culture for 24 h; H + siCtrl, hypoxic culture for 24 h together with transfection of the negative control siRNA; H + siWDR5-2, hypoxic culture for 24 h together with WDR5 knockdown; H + DMSO, hypoxic culture for 24 h together with DMSO treatment; H + OICR-9429, hypoxic culture for 24 h together with OICR-9429 treatment). (D) qPCR analysis of WDR5 enrichment at SPP1 promoter area in THP-1 cells under indicated treatment conditions ( n = 3 per group). (E) Agarose gel electrophoresis assays showing ChIP-PCR (SPP1 promoter sequence) products from THP-1 cells immunoprecipitated with anti-H3K4me3, anti-WDR5, and IgG antibodies under indicated treatment conditions. (F) qPCR analysis of H3K4me3 enrichment at SPP1 promoter area in U937 cells under indicated treatment conditions ( n = 3 per group). (G) qPCR analysis of WDR5 enrichment at SPP1 promoter area in U937 cells under indicated treatment conditions ( n = 3 per group). (H) Agarose gel electrophoresis assays showing ChIP-PCR (SPP1 promoter sequence) products from U937 cells immunoprecipitated with anti-H3K4me3, anti-WDR5, and IgG antibodies under indicated treatment conditions. (I and J) qPCR analysis of SPP1 expression in THP-1 (I) and U937 (J) cells under indicated treatment conditions ( n = 3 per group). (K) Western blotting showing OPN expression in THP-1 and U937 cells subjected to the indicated treatments. The data are presented as the means ± SD; * P < 0.05, ** P < 0.01, and *** P < 0.001. HIF-1α, hypoxia-inducible factor α; H3K4me3, histone 3 lysine 4 trimethylation; H3K9me3, histone 3 lysine 9 trimethylation; H3K27me3, histone 3 lysine 27 trimethylation; IF, immunofluorescence; ChIP, chromatin immunoprecipitation; WDR5, WD40 repeat-containing protein 5; SPP1, secreted phosphoprotein 1; OPN, osteopontin; DMSO, dimethyl sulfoxide; qPCR, quantitative real-time PCR; SD, standard deviation; kDa, kilodaltons.

Article Snippet: THP-1 and U937 cells were treated with the WD40 repeat-containing protein 5 (WDR5) inhibitor OICR-9429 (20 μM, catalog no. HY-16993, MedChemExpress) for 24 h during hypoxic culture.

Techniques: Expressing, Western Blot, Staining, Labeling, Transfection, Negative Control, Knockdown, Agarose Gel Electrophoresis, Sequencing, Immunoprecipitation, Immunofluorescence, Chromatin Immunoprecipitation, Real-time Polymerase Chain Reaction, Standard Deviation

Journal: Cancer Communications

Article Title: Hypoxia-Induced Osteopontin-Positive Glioma-Associated Macrophages Facilitate Glioma Mesenchymal Transition via NF-κB Pathway Activation

doi: 10.34133/cancomm.0007

Figure Lengend Snippet: Targeting OPN increases the therapeutic effectiveness of TMZ in a C57BL/6J in vivo glioma model. (A) Schematic illustration of the in vivo experimental design in C57BL/6J mice. The blue arrow represents intracranial implantation; the red arrows represent treatments (control, treatment with PBS; OPNi-1, treatment with OPNi-1 alone; TMZ, treatment with TMZ alone; TMZ + OPNi-1, combined treatment with TMZ and OPNi-1); the green arrows represent MRI scans. (B) Representative MR images showing the intracranial tumor burden in C57BL/6J mice from the indicated treatment groups. (C) Quantification of the tumor volume in C57BL/6J mice from the indicated groups on days 0, 7, and 14 since initial treatment ( n = 7 mice per group). (D) Kaplan–Meier survival curves of glioma-bearing mice receiving the indicated treatments ( n = 7 mice per group). (E) Representative mIHC images of glioma tissues from mouse brain sections. Eight markers were divided into 2 staining panels and applied to serial tumor sections to preserve spatial consistency. Panel 1 includes PD-L1, F4/80, CD163, and OPN, and panel 2 includes CD20, NK1.1, CD8a, and CD4. Images for both panels were acquired from matched anatomical regions on adjacent serial sections. (F) Quantification of PD-L1 positivity based on mIHC staining ( n = 3 per group). (G) Quantification of macrophage (F4/80 + cells) proportion based on mIHC staining ( n = 3 per group). (H) Quantification of GAM (CD163 + F4/80 + cells) proportion based on mIHC staining ( n = 3 per group). (I) Quantification of OPN + GAM (OPN + CD163 + F4/80 + cells) proportion based on mIHC staining ( n = 3 per group). (J) Quantification of B cell (CD20 + cells) proportion based on mIHC staining ( n = 3 per group). (K) Quantification of NK cell (NK1.1 + cells) proportion based on mIHC staining ( n = 3 per group). (L) Quantification of CD8 + T cell (CD8a + cells) proportion based on mIHC staining ( n = 3 per group). (M) Quantification of CD4 + T cell (CD4 + cells) proportion based on mIHC staining ( n = 3 per group). Data are presented as the mean ± SD; * P < 0.05, ** P < 0.01. PD-L1, programmed cell death ligand 1; F4/80, mouse EGF-like module-containing mucin-like hormone receptor-like 1; CD163, cluster of differentiation 163; OPN, osteopontin; GAM, glioma-associated macrophage; OPN + GAM, osteopontin positive glioma-associated macrophage; NK, natural killer; CD20, cluster of differentiation 20; SD, standard deviation. Hypoxia induces the emergence of OPN + GAMs through the epigenetic activation of the H3K4me3-WDR5 axis. The secreted OPN promotes the mesenchymal transition and PD-L1 expression in glioma cells via CD44-mediated activation of the NF-κB signaling pathway.

Article Snippet: THP-1 and U937 cells were treated with the WD40 repeat-containing protein 5 (WDR5) inhibitor OICR-9429 (20 μM, catalog no. HY-16993, MedChemExpress) for 24 h during hypoxic culture.

Techniques: In Vivo, Control, Staining, Standard Deviation, Activation Assay, Expressing

Journal: Cancer Communications

Article Title: Hypoxia-Induced Osteopontin-Positive Glioma-Associated Macrophages Facilitate Glioma Mesenchymal Transition via NF-κB Pathway Activation

doi: 10.34133/cancomm.0007

Figure Lengend Snippet: Schematic diagram showing mechanistic summary of OPN + GAM promoting mesenchymal transition of glioma cells under hypoxic conditions. Hypoxia induces the emergence of OPN + GAMs through the epigenetic activation of the H3K4me3-WDR5 axis. The secreted OPN promotes mesenchymal transition and PD-L1 expression in glioma cell axis. The secreted OPN promotes the mesenchymal transition and PD-L1 expression in glioma cells via CD44-mediated activation of the NF-κB signaling pathway. PD-L1, programmed cell death ligand 1; OPN, osteopontin; GAM, glioma-associated macrophage; H3K4me3, histone 3 lysine 4 trimethylation; MES, mesenchymal; PN, proneural; GBM, glioblastoma.

Article Snippet: THP-1 and U937 cells were treated with the WD40 repeat-containing protein 5 (WDR5) inhibitor OICR-9429 (20 μM, catalog no. HY-16993, MedChemExpress) for 24 h during hypoxic culture.

Techniques: Activation Assay, Expressing

Journal: bioRxiv

Article Title: SAGA/ATAC complexes sustain aberrant chromatin regulation and promote tumorigenesis in diffuse midline glioma

doi: 10.64898/2026.01.22.701194

Figure Lengend Snippet: a, Growth curves of SU-DIPGXIII cells transduced with shRNAs to knockdown both KAT2A and KAT2B, showing significantly reduced growth compared to control shRNA-transduced cells. b, Number of live SU-DIPGXIII+Cas9 cells expressing a control plasmid (HA/flag-GFP) or sgRNAs to KO SAGA-associated acetyltransferase activity ( TADA2B sgRNAs), or de-ubiquitinase activity ( ENY2 sgRNA). c, Schematic illustrating inhibition of histone-modifying modules of SAGA/ATAC complexes using chemical probes to target SAGA/ATAC-dependent histone acetylation (GSK4027, CPTH2, garcinol), SAGA-dependent H2A/H2B de-ubiquitination (USP22si-02), or WDR5-mediated H3K4me3 methylation (OICR-9529, WM856, WDR5-IN-4, and WDR5-IN-6). d, Average normalized cell viability from CellTiter-Glo assays conducted seven days after starting treatment of H3K27M mutant cells (teal curves) or non-transformed, H3 wildtype, control cells (black curves) with increasing doses of the KAT2A/2B bromodomain-targeting acetyltransferase inhibitor, GSK4027. e, Immunoblots confirming that treatment of BT245 cells with GSK4027 reduced H3K9ac in a dose-dependent manner, but not total H3 or SGF29 protein abundance. f-h, Dose response curves showing inhibition of H3K27M mutant DMG cell viability, but no effect on control H3 wild-type cells (black curves) following seven days of treatment with the DUB inhibitor, USP22i-S02 ( f, yellow curves), the WDR5 WIN site inhibitor, WDR5-IN-4 ( g, blue curves), or the WDR5 WBM site inhibitor, WDR5-IN-6 ( h, blue curves). i-j Average number of live SU-DIPGXIIIP*+ZsG/luc cells ( i ), and average BT245 ( j ) cell viability (CellTiter-Glo) following treatment with combinations of GSK4027 and USP22si-02 to simultaneously target both SAGA/ATAC-dependent histone acetyltransferase activity and SAGA-dependent H2A/H2B de-ubiquitination. k-l, BLISS synergy plots showing a combined effect of GSK4027 and WDR5-IN-6 treatment in reducing SU-DIPGXIIIP*+ZsG/luc growth ( k, **p<1.74×10 -3 ), and a combined effect of GSK4027 and WDR5-IN-4 treatment in reducing BT245 cell growth ( l , ****p<2.5×10 -10 ).

Article Snippet: The following compounds were used in this study: SGF29-IN-1 (cat# HY-158009, MedChemExpress), GSK4027 (cat# SML2018, Sigma Aldrich), CPTH2 (cat# J65939LB0, ThermoFisher), garcinol (cat# 14076, Active Motif), USP22si-02 (cat# SML3875, Sigma Aldrich), WDR5-IN-4 (WIN site inhibitor, cat# HY-111753, MedChemExpress), WDR5-IN-6 (WBM site inhibitor, cat# T77495, TargetMol), OICR9429 (cat# T6916, TargetMol), WM586 (WDR5/Myc inhibitor, cat# HY-153728, MedChemExpress), YM-53601 (cat# HY-100313A, MedChemExpress), NB-598 (cat# HY-16343, MedChemExpress), terbinafine (cat# T3677, TCI Chemicals), Atorvastatin (cat# SML3030, Sigma Aldrich), and Pitavastatin (cat# AMBH2D6EF677, Ambeed)

Techniques: Transduction, Knockdown, Control, shRNA, Expressing, Plasmid Preparation, Activity Assay, Inhibition, Ubiquitin Proteomics, Methylation, Mutagenesis, Transformation Assay, Western Blot, Quantitative Proteomics

Journal: bioRxiv

Article Title: Menin inhibition impairs metastatic colonization of Ewing sarcoma

doi: 10.1101/2025.11.10.687648

Figure Lengend Snippet: ( A ) MYC transcript levels in control and MEN1-KO cells as determined by RT-qPCR. ns p > 0.05, * p ≤ 0.05. ( B ) MYC transcript counts from RNA-seq of A673 control and MEN1-KO tumors. ( C ) Western blot of MYC and Vinculin levels in A673 and TC32 control and MEN1-KO cells ( D ) Western blot of MYC and Vinculin in tumors derived from A673 control and MEN1-KO cells. ( E ) Co-immunoprecipitations with an anti-Menin antibody were performed on A673, CHLA10 and U2OS nuclear extracts and immunoblotted for Menin, MYC, MLL2 and WDR5. ( F ) Co-immunoprecipitations with an anti-MYC antibody were performed on A673 and CHLA10 nuclear extracts and immunoblotted for MYC, Menin, MAX, MLL2 and WDR5.

Article Snippet: Membranes were blocked with Intercept (TBS) Blocking Buffer (LICORbio 927-60001) and probed for the primary antibodies GAPDH Rabbit mAb (Cell Signaling 2118), MAX Rabbit pAb (Cell Signaling 4739), Menin Goat pAb (Bethyl A300-106A), MLL1-C (C-terminal) Rabbit pAb (Bethyl A300-374A), MLL2-C (C-terminal) Rabbit mAb (Cell Signaling 63735), MYC Rabbit mAb (Cell Signaling 18583), Vinculin Rabbit mAb (Cell Signaling 13901) or WDR5 Rabbit pAb (Bethyl A302-430A) followed by the secondary antibody Goat anti-Rabbit 800CW (Licor 926-32211), Donkey anti-Rabbit 800CW (Licor 926-32213) or Donkey anti-Goat 680RD (Licor 926-68074).

Techniques: Control, Quantitative RT-PCR, RNA Sequencing, Western Blot, Derivative Assay

Journal: bioRxiv

Article Title: Menin inhibition impairs metastatic colonization of Ewing sarcoma

doi: 10.1101/2025.11.10.687648

Figure Lengend Snippet: ( A ) Incucyte proliferation assay plotting percent confluence for A673 and TC32 cells treated with 0.1% DMSO or 10 µM VTP50469 starting at time 0. Representative of n=3-4). ( B and C ) Invasion of cells from a sphere of A673 cells embedded in rat tail collagen and treated with 0.1% DMSO or 10 µM VTP50469 for 5 days. ( B ) Representative phase and phalloidin (red)/DAPI (blue) stained images are shown (scale bars=100 µm). ( C ) Plot of circularity quantified from replicate spheroids treated as in ( B ). ( D ) A673 and TC32 cells were treated with 0.1% DMSO or 10 µM VTP50469 for 72 hours and genes that were significantly downregulated in VTP50469-treated cells (padj<0.05) were overlapped with genes downregulated in MEN1-KO cells. The top 5 enriched Hallmark pathways for the overlapping downregulated genes in each cell line are shown along with the overlap/total genes for each pathway. The green arrows indicate pathways that were reactivated in A673 MEN1-KO tumors (see ). ( E ) MYC transcript levels in A673, CHLA10 and TC32 cells treated with 0.1% DMSO or 10 µM VTP50469 for 72 hours as determined by RT-qPCR (ns p > 0.05). ( F ) Western of MYC and Vinculin in cells treated with 0.1% DMSO or 10 µM VTP50469 for 72 hours. ( G ) Co-immunoprecipitations with an anti-Menin antibody were performed on nuclear extracts from A673 and CHLA10 cells treated with 0.1% DMSO or 10 µM VTP50469 for 72 hours and immunoblotted for Menin, MYC, MLL2 and WDR5.

Article Snippet: Membranes were blocked with Intercept (TBS) Blocking Buffer (LICORbio 927-60001) and probed for the primary antibodies GAPDH Rabbit mAb (Cell Signaling 2118), MAX Rabbit pAb (Cell Signaling 4739), Menin Goat pAb (Bethyl A300-106A), MLL1-C (C-terminal) Rabbit pAb (Bethyl A300-374A), MLL2-C (C-terminal) Rabbit mAb (Cell Signaling 63735), MYC Rabbit mAb (Cell Signaling 18583), Vinculin Rabbit mAb (Cell Signaling 13901) or WDR5 Rabbit pAb (Bethyl A302-430A) followed by the secondary antibody Goat anti-Rabbit 800CW (Licor 926-32211), Donkey anti-Rabbit 800CW (Licor 926-32213) or Donkey anti-Goat 680RD (Licor 926-68074).

Techniques: Proliferation Assay, Staining, Quantitative RT-PCR, Western Blot