Gene Expression in COP1-ETV1-ETV5-cJun deficient mouse brain
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PROVIDER: PRJNA437442 | ENA |
REPOSITORIES: ENA
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Project description:The proto-oncogenes ETV1, ETV4, and ETV5 encode members of the E26 transformation-specific (ETS) transcription factor family, which includes the most frequently rearranged and overexpressed genes in prostate cancer. Despite being critical regulators of development, little is known about their post-translational regulation. Here we identify the ubiquitin ligase COnstitutive Photomorphogenic-1 (COP1, also called RFWD2) as a tumor suppressor that negatively regulates ETV1, ETV4, and ETV5. ETV1, which is the member mutated more frequently in prostate cancer, was degraded after being ubiquitinated by COP1. Truncated ETV1 encoded by prostate cancer translocation TMPRSS2:ETV1 lacks the critical COP1 binding motifs (degrons) and was 50-fold more stable than wild-type ETV1. Almost all patient translocations eliminate these ETV1 degrons, implying that translocations rendering ETV1 insensitive to COP1 confer a significant selective advantage to prostate epithelial cells. Indeed, COP1 deficiency in mouse prostate elevated ETV1 levels and produced increased cell proliferation, hyperplasia, and early prostate intraepithelial neoplasia. The combined loss of COP1 and PTEN enhanced the invasiveness of mouse prostate adenocarcinomas. Finally, relatively rare human prostate cancer samples showed hemizygous loss of the COP1 gene, loss of COP1 protein expression, and abnormally elevated ETV1 protein while lacking a translocation event. These findings identify COP1 as a bona fide tumor suppressor whose down-regulation promotes prostatic epithelial cell proliferation and tumorigenesis. LNCap prostate cancer cell line were treated with 5 different sets of siRNAs: (1) control siRNA; (2) COP1 (RFWD2) siRNA; (3) COP1 siRNA + ETV1 siRNA; (4) COP1 siRNA + c-JUN siRNA; (5) COP1 siRNA + ETV1 siRNA + c-JUN siRNA. The experiments were conducted in two batches; each batch has its own control siRNA group, so that the batch effect can be properly modelled. Each group has 4-6 replicates; there are 31 samples in total.
2011-04-08 | E-GEOD-27914 | biostudies-arrayexpress
Project description:The proto-oncogenes ETV1, ETV4, and ETV5 encode members of the E26 transformation-specific (ETS) transcription factor family, which includes the most frequently rearranged and overexpressed genes in prostate cancer. Despite being critical regulators of development, little is known about their post-translational regulation. Here we identify the ubiquitin ligase COnstitutive Photomorphogenic-1 (COP1, also called RFWD2) as a tumor suppressor that negatively regulates ETV1, ETV4, and ETV5. ETV1, which is the member mutated more frequently in prostate cancer, was degraded after being ubiquitinated by COP1. Truncated ETV1 encoded by prostate cancer translocation TMPRSS2:ETV1 lacks the critical COP1 binding motifs (degrons) and was 50-fold more stable than wild-type ETV1. Almost all patient translocations eliminate these ETV1 degrons, implying that translocations rendering ETV1 insensitive to COP1 confer a significant selective advantage to prostate epithelial cells. Indeed, COP1 deficiency in mouse prostate elevated ETV1 levels and produced increased cell proliferation, hyperplasia, and early prostate intraepithelial neoplasia. The combined loss of COP1 and PTEN enhanced the invasiveness of mouse prostate adenocarcinomas. Finally, relatively rare human prostate cancer samples showed hemizygous loss of the COP1 gene, loss of COP1 protein expression, and abnormally elevated ETV1 protein while lacking a translocation event. These findings identify COP1 as a bona fide tumor suppressor whose down-regulation promotes prostatic epithelial cell proliferation and tumorigenesis.
2011-04-08 | GSE27914 | GEO
Project description:Total RNA was extracted from E18.5 brains with the olfactory bulbs removed using the MirVana miRNA isolation kit (Invitrogen). RNA concentration was determined in a NanoDrop 8000 (ThermoFisher) and RNA integrity using both 2100 Bioanalyzer and 2200 TapeStation (Agilent). Libraries were prepared from 1 μg of total RNA with TruSeq RNA Sample Preparation Kit v2 (Illumina). Library size was confirmed using 2200 TapeStation and High Sensitivity D1K screen tape (Agilent) and concentration was determined by Library quantification kit (KAPA). Libraries were multiplexed five per lane and then sequenced in a HiSeq2500 (Illumina) to generate 50 million paired end 75 bp reads. The "SAMPLE_ID" sample characteristic is a sample identifier internal to Genentech. The ID of this project in Genentech's ExpressionPlot database is PRJ0013017
2018-11-14 | GSE111564 | GEO
Project description:In order to assess the physiological role of Cop1 in vivo we generated mice that do no longer express the protein. Cop1KO mice die at around E10.5 of embryonic development. In order to gain insights into the molecular mechanisms that cause the embryonic death we compared the genome-wide gene expression profile of E9.5 wild-tytpe and Cop1-null embryos. The data do not support a role for Cop1 in the regulation of the p53 pathway in vivo and highlight a role for Cop1 in cardiovascular development and/or angiogenesis. The abstract of the associated publication is as follows:Biochemical data have suggested conflicting roles for the E3 ubiquitin ligase Cop1 in tumourigenesis. Here we present the first in vivo investigation of the role of Cop1 in cancer aetiology. We used an innovative genetic approach to generate an allelic series of Cop1 and show that Cop1 hypomorphic mice spontaneously develop malignancy at a high frequency in their first year of life and are highly susceptible to radiation-induced lymphomagenesis. Biochemically, we show that Cop1 regulates c-Jun oncoprotein stability and modulates c-Jun/AP1 transcriptional activity in vivo. Cop1-deficiency stimulates cell proliferation in a c-Jun-dependent manner. We conclude that Cop1 is a tumour suppressor that antagonizes c-Jun oncogenic activity in vivo. RNA from 6 different control embryos (+/+ or +/-) were mixed and subdivided into control pool 1 and pool 2. RNA from 6 different Cop-null embryos were mixed and subdivided into KO pool 1 and pool 2.
2011-01-13 | E-GEOD-18636 | biostudies-arrayexpress
Project description:Purpose: The aim of this study is compare the gene expression profiles between wild-type (WT) and Etv5-deficient follicular helper T (TFH) cells to identify the molecular mechanism of how ETV5 promotes the TFH cell differentiation. Methods: TFH cells (CD4+CD44+CXCR5+PD-1+) from the spleen of WT and Etv5f/f;Cd4-Cre mice immunized with OVA in alum for 7 days were sorted by a MoFlo-XDP (Beckman Coulter). Total RNA was extracted using TRIzol (GeneAll) according to the manufacturer’s instruction. The library for RNA sequencing was generated using the Truseq stranded mRNA library prep kit (Illumina), and sequencing was performed with Novaseq 6000 (Illumina). Results: Reads were mapped to the mouse reference genome (mm10) with Tophat (v2.0.13), and the aligned results were analyzed with Cuffdiff (v2.2.0) for differentially expressed genes (DEGs). A total of 92 genes were differentially expressed in Etv5-deficient TFH cells (46 genes upregulated and 46 genes downregulated) when compare with WT TFH cells (fold change > 2 and P-value < 0.05). Conclusions: Our study presents the first comparative gene expression analysis of TFH cells from control and T cell-specific Etv5-deficient mice. Since ETV5 usually acts as a transcription activator, we focused on the downregulated genes in Etv5-deficient TFH cells. Through this study, we identified the candidate genes that are targeted by ETV5 for TFH cell differentiation.
2023-11-08 | GSE247030 | GEO
Project description:In order to assess the physiological role of Cop1 in vivo we generated mice that do no longer express the protein. Cop1KO mice die at around E10.5 of embryonic development. In order to gain insights into the molecular mechanisms that cause the embryonic death we compared the genome-wide gene expression profile of E9.5 wild-tytpe and Cop1-null embryos. The data do not support a role for Cop1 in the regulation of the p53 pathway in vivo and highlight a role for Cop1 in cardiovascular development and/or angiogenesis. The abstract of the associated publication is as follows:Biochemical data have suggested conflicting roles for the E3 ubiquitin ligase Cop1 in tumourigenesis. Here we present the first in vivo investigation of the role of Cop1 in cancer aetiology. We used an innovative genetic approach to generate an allelic series of Cop1 and show that Cop1 hypomorphic mice spontaneously develop malignancy at a high frequency in their first year of life and are highly susceptible to radiation-induced lymphomagenesis. Biochemically, we show that Cop1 regulates c-Jun oncoprotein stability and modulates c-Jun/AP1 transcriptional activity in vivo. Cop1-deficiency stimulates cell proliferation in a c-Jun-dependent manner. We conclude that Cop1 is a tumour suppressor that antagonizes c-Jun oncogenic activity in vivo.
2011-01-13 | GSE18636 | GEO
Project description:To elucidate the mechanism of ETV5-mediated pre-B cell survival signaling, we investigated the gene expression pattern in BCR-ABL1-transformed ETV5+/+ and ETV5-/- B cell precursors. BCR-ABL1 transformed B cell precursors of ETV5wild-type and ETV5 knockout mice were subjected to RNA isolation
2013-06-03 | E-GEOD-34833 | biostudies-arrayexpress
Project description:To elucidate the mechanism of ETV5-mediated pre-B cell survival signaling, we investigated the gene expression pattern in BCR-ABL1-transformed ETV5+/+ and ETV5-/- B cell precursors.
2013-06-03 | GSE34833 | GEO
Project description:Alveolar type II (AT2) cell dysfunction contributes to a number of significant human pathologies including respiratory distress syndrome, lung adenocarcinoma, and debilitating fibrotic diseases, but the critical transcription factors that maintain AT2 cell identity are unknown. Here we show that the E26 transformation-specific (ETS) family transcription factor Etv5 is essential tomaintain AT2 cell identity. Deletion of Etv5 from AT2 cells produced gene and protein signatures characteristic of differentiated alveolar type I (AT1) cells. Consistent with a defect in the AT2 stem cell population, Etv5 deficiency markedly reduced recovery following bleomycin-induced lung injury. Lung tumorigenesis driven by mutant KrasG12D was also compromised by Etv5 deficiency. ERK activation downstream of Ras was found to stabilize Etv5 through inactivation of the cullin- RING ubiquitin ligase CRL4COP1/DET1 that targets Etv5 for proteasomal degradation. These findings identify Etv5 as a critical output of Ras signaling in AT2 cells, contributing to both lung homeostasis and tumor initiation.
2018-03-08 | GSE111569 | GEO
Project description:ETV1 is highly expressed in GIST cells and required for their survival and growth. To identify genes and pathways regulated by ETV1 in GIST, we performed expression profiles of GIST cells after ETV1 knockdown.
2010-10-13 | GSE19396 | GEO