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TRIM37 is a novel H2A ubiquitin ligase and a Breast Cancer Oncogene

ABSTRACT: The TRIM37 gene is mutatedin Mulbery nanism, a rare autosomal recessive disorder, and is in the 17q23 chromosomal region that is amplified in up to ~40% of breast cancers. Trim37 contains a RING finger domain, a hallmark of E3 ubiquitin ligases, but the protein substrate(s) of Trim37 is unknown. Mono-ubiquitination of histone H2A is a chromatin modification associated with transcriptional repression and here we report that Trim37 is an H2A ubiquitin ligase. Genome-wide Chip-CHIP experiments indicate that in human breast cancer cells containing amplified 17q23, Trim37 is bound to the promoters of many tumor suppressor genes. RNA interference (RNAi)-mediated knockdown of Trim37 results in loss of ubiquitinated H2A, dissociation of PRC1 and PRC2, and transcriptional reactivation of silenced genes. Knockdown of Trim37 in human breast cancer cells containing amplified 17q23 substantially decreases tumor growth in mouse xenografts. Collectively, our results reveal Trim37 as a new H2A ubiquitin ligase that is overexpressed in a subset of breast cancers and redirects PRC2 to silence tumor suppressors and other genes resulting in oncogenesis.

ORGANISM(S): Homo sapiens

PROVIDER: GSE48196 | GEO | 2014/10/06

SECONDARY ACCESSION(S): PRJNA209139

REPOSITORIES: GEO

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TRIM37 is a novel H2A ubiquitin ligase and a Breast Cancer Oncogene

Project description:The TRIM37 gene is mutatedin Mulbery nanism, a rare autosomal recessive disorder, and is in the 17q23 chromosomal region that is amplified in up to ~40% of breast cancers. Trim37 contains a RING finger domain, a hallmark of E3 ubiquitin ligases, but the protein substrate(s) of Trim37 is unknown. Mono-ubiquitination of histone H2A is a chromatin modification associated with transcriptional repression and here we report that Trim37 is an H2A ubiquitin ligase. Genome-wide Chip-CHIP experiments indicate that in human breast cancer cells containing amplified 17q23, Trim37 is bound to the promoters of many tumor suppressor genes. RNA interference (RNAi)-mediated knockdown of Trim37 results in loss of ubiquitinated H2A, dissociation of PRC1 and PRC2, and transcriptional reactivation of silenced genes. Knockdown of Trim37 in human breast cancer cells containing amplified 17q23 substantially decreases tumor growth in mouse xenografts. Collectively, our results reveal Trim37 as a new H2A ubiquitin ligase that is overexpressed in a subset of breast cancers and redirects PRC2 to silence tumor suppressors and other genes resulting in oncogenesis. Identification of TRIM37 Binding targets in MCF7 cells from the two replicate experiments

2014-10-06 | E-GEOD-48196 | biostudies-arrayexpress

The ubiquitin ligase TRIM37 controls cancer-specific vulnerability to PLK4 inhibition

Project description:We show synthetic lethality between PLK4 inhibition-mediated centrosome loss and the overexpression of the ubiquitin ligase TRIM37 in cancer cells with amplification of Chr17q

2020-09-18 | GSE148263 | GEO

RNA-seq analysis of MDA-MB-231_2b cells treated with control or TRIM37 specific antisense oligonucleotides

Project description:TRIM37 is histon H2A ubiquitinase and important oncogene for breast cancer. To test what is the gene expression network regulated by TRIM37, we silenced its ixpression in MDA-MB-231_2b Triple Negative Breast Cancer (TNBC) cell line.

2022-08-31 | GSE136617 | GEO

Homo sapiens

Project description:TRIM37 is a novel H2A ubiquitin ligase and a Breast Cancer Oncogene

| PRJNA209139 | ENA

LSD1 maintains mammary luminal cell differentiation and suppresses luminal breast cancer cell invasion

Project description:LSD1 (KDM1A) is a histone demethylase that plays both oncogenic and tumor suppressor roles in breast cancer. However, the exact contexts under which it plays these opposite roles remain largely elusive. By characterizing its role in normal and cancerous luminal mammary epithelial cells (MECs), here we show that LSD1 is essential for maintaining differentiation and survival of luminal cells. LSD1-inhibition by both genetic and pharmacological approaches increases invasion of luminal breast cancer cells. Mechanistically, we find LSD1 interacts with GATA3 and their common target genes are highly related to breast cancer. LSD1 positively regulates GATA3 expression and represses that of TRIM37, a histone H2A ubiquitin ligase and breast cancer oncoprotein. LSD1-loss leads to reduced expression of several cell junction genes (e.g., CDH1, VCL, CTNNA1), possibly via TRIM37-mediated repression. Collectively, our data suggest LSD1 largely plays a tumor suppressor role in luminal breast cancer and the increased MEC invasiveness associated with LSD1-inhibition can be blocked via TRIM37-inhibition.

2019-08-16 | GSE95165 | GEO

The ubiquitin ligase TRIM37 controls cancer-specific vulnerability to PLK4 inhibition

Project description:The ubiquitin ligase TRIM37 controls cancer-specific vulnerability to PLK4 inhibition

| PRJNA623614 | ENA

TRIM37 augments AP-2γ transcriptional activity and cellular localization via K63-linked polyubiquitination to drive breast cancer progression [ChIP-seq]

Project description:Using a proteomics approach, we identified the Tripartite Motif Containing 37 (TRIM37) as a novel transcriptional coactivator of AP-2γ. We demonstrate TRIM37 facilitates AP-2γ chromatin binding to regulate the AP-2γ mediated transcriptional program directly. We provide evidence that TRIM37 achieves this by stimulating K63-chain-linked polyubiquitination of AP-2γ, promoting protein localization from the cytoplasm to the nucleus. In clinical analyses, we find TRIM37 is upregulated in multiple breast cancer datasets, supporting our findings that TRIM37-AP-2γ interaction is essential for breast cancer tumor growth. Overall, our work revealed that TRIM37 is an oncogenic coactivator of AP-2γ in breast cancer and provides a novel therapeutic target for treating the disease.

2022-07-25 | GSE182546 | GEO

TRIM37 augments AP-2γ transcriptional activity and cellular localization via K63-linked polyubiquitination to drive breast cancer progression [RNA-seq]

2022-07-25 | GSE182545 | GEO

The Central Role of EED in the Orchestration of Polycomb Group Complexes

Project description:Polycomb Repressive Complexes 1 and 2 (PRC1 and 2) play a critical role in the epigenetic regulation of transcription during cellular differentiation, stem cell pluripotency, and neoplastic progression1-3. Here we show that the Polycomb group protein EED, a core component of PRC2, physically interacts with and functions as part of the PRC1 complex. Components of PRC1 and PRC2 compete for EED binding. EED functions to recruit PRC1 to H3K27me3 loci and enhances PRC1 mediated H2A ubiquitin E3 ligase activity. Taken together, we uncover the integral role of EED as an epigenetic exchange factor coordinating the activities of PRC1 and 2. EED, uH2A, RING1A, RING1B, BMI1 and H3K27Me3 ChIP-seq in EED stable knockdown and control Scramble DU145 prostate cancer cell line

2014-01-23 | E-GEOD-42566 | biostudies-arrayexpress

The Central Role of EED in the Orchestration of Polycomb Group Complexes

2014-01-23 | GSE42566 | GEO

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