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Loss of SWI/SNF Chromatin Remodeling Alters NRF2 Signaling in Non-Small Cell Lung Carcinoma

ABSTRACT: Purpose: RNA-seq of CRISPR Knockout of SMARCA4 and SMARCA2 in H358 focused on examining the effects of the knockouts on NRF2 signaling

ORGANISM(S): Homo sapiens

PROVIDER: GSE162611 | GEO | 2020/12/04

REPOSITORIES: GEO

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siRNA Knockdown of SWI/SNF complex proteins in prostate cancer cell lines

Project description:Here we performed transcriptional profiling of the prostate cancer cell lines LNCaP and 22Rv1 comparing non-targeting siRNA treatment versus siRNAs targeting SWI/SNF complex proteins (SMARCA2, SMARCA4, and SMARCB1). Goal was to determine the effect of SWI/SNF knockdown on gene expression in prostate cancer. Two-condition experiment: non-targeting siRNA versus SWI/SNF-siRNA treated cells. Three SWI/SNF proteins were targeted: SMARCA2, SMARCA4, and SMARB1. Biological replicates: 1 control replicate, 2 treatment replicates per SWI/SNF protein. Technical replicates: 1 replicate per SWI/SNF protein. Cell lines: 22Rv1 and LNCaP.

2013-07-20 | E-GEOD-40384 | biostudies-arrayexpress

The role of the mammalian SWI/SNF chromatin remodeling complex in neuroendocrine prostate cancer

Project description:We sought to determine the effects of SMARCA4 and SMARCA2 depletion in prostate cancer cell lines. We performed siRNA-mediated knock-down of SMARCA4 and SMARCA2 in an androgen-sensitive (LNCaP) cell line and in a castration-resistant prostate cancer (CRPC)-adenocarcinoma cell line (22Rv1) and compared global transcriptional alterations using RNA-seq.

| EGAS00001004177 | EGA

siRNA Knockdown of SWI/SNF complex proteins in prostate cancer cell lines

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Targeting SWI/SNF ATPases in enhancer-addicted prostate cancer [ATAC-Seq]

Project description:This study profiles chromatin accessibility, gene expresison, transcription factor binding, and three-dimensional DNA-DNA contact changes upon rapid SWI/SNF ATPase inactivation in prostate cancer cells. SWI/SNF ATPases activity was disabled using a novel PROTAC degrader compound targeting the SMARCA2, SMARCA4 and PBRM1 subunits of the SWI/SNF remodeling complex.

2021-10-28 | GSE171584 | GEO

Targeting SWI/SNF ATPases in enhancer-addicted prostate cancer [RNA-Seq]

2021-10-28 | GSE171523 | GEO

Targeting SWI/SNF ATPases in enhancer-addicted prostate cancer [HiChIP-Seq]

2021-10-28 | GSE171591 | GEO

Targeting SWI/SNF ATPases in enhancer-addicted prostate cancer [ChIP-Seq]

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Loss of SWI/SNF Chromatin Remodeling Alters NRF2 Signaling in Non-Small Cell Lung Carcinoma.

Project description: Not available

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Targeting SWI/SNF ATPases in H3.3K27M Diffuse Intrinsic Pontine Gliomas [ATAC-Seq]

Project description:Diffuse midline gliomas (DMGs), including diffuse intrinsic pontine gliomas (DIPGs), bearing lysine-to-methionine mutations in histone H3 at lysine 27 (H3K27M) are lethal childhood brain cancers. These tumors harbor a global reduction in the transcriptional repressive mark H3K27me3 accompanied by an increase in the transcriptional activation mark H3K27ac. We postulated that H3K27M mutations, in addition to altering H3K27 modifications, reprogram the master chromatin remodeling SWI/SNF complex. The SWI/SNF complex can exist in two main forms termed BAF and PBAF that play central roles in neurodevelopment and cancer. Moreover, BAF antagonizes PRC2, the main enzyme catalyzing H3K27me3. We demonstrate that H3K27M gliomas show increased protein levels of the SWI/SNF complex ATPase subunits SMARCA4 and SMARCA2 and the PBAF component PBRM1. Additionally, knockdown of mutant H3K27M lowered SMARCA4 protein levels. The proteolysis targeting chimera (PROTAC) AU-15330 that simultaneously targets SMARCA4, SMARCA2, and PBRM1 for degradation exhibits cytotoxicity in H3.3K27M but not H3 wild-type cells. AU-15330 lowered chromatin accessibility measured by ATAC-seq at non-promoter regions and reduced global H3K27ac levels. Integrated analysis of gene expression, proteomics, and chromatin accessibility in AU-15330-treated cells demonstrated reduction in levels of FOXO1, a key member of the forkhead family of transcription factors. Moreover, genetic or pharmacologic targeting of FOXO1 resulted in cell death in H3K27M cells. Overall, our results suggest that H3K27M upregulates SMARCA4 levels and combined targeting of SWI/SNF ATPases in H3.3K27M can serve as a potent therapeutic strategy for these deadly childhood brain tumors.

2023-04-16 | GSE229453 | GEO

Targeting SWI/SNF ATPases in H3.3K27M Diffuse Intrinsic Pontine Gliomas [RNA-Seq]

2023-04-16 | GSE229452 | GEO

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