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RNA-Seq of murine GIST-like tumors after Etv1 ablation

ABSTRACT: We used a mouse expressing three alleles 1) KitV558Delta/+ activating allele that develop GIST-like tumors in the cecum, 2) Etv1 flox/flox conditional knockout allele and 3) Rosa26-CreERT2 tamoxifen activated Cre allele. Mice were treated with either Tamoxifen (to delete Etv1) or corn oil (control). Cecal tumors were isolated for gene expression profiling by RNA-Seq. Expression profile mouse cecal GIST tumor with or without Etv1 ablation was generated by RNA-Seq

ORGANISM(S): Mus musculus

SUBMITTER: Yu Chen

PROVIDER: E-GEOD-64608 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Combined inhibition of MAP kinase and KIT signaling synergistically destabilizes ETV1 and suppresses GIST tumor growth.

Ran Leili L Sirota Inna I Cao Zhen Z Murphy Devan D Chen Yuedan Y Shukla Shipra S Xie Yuanyuan Y Kaufmann Michael C MC Gao Dong D Zhu Sinan S Rossi Ferdinando F Wongvipat John J Taguchi Takahiro T Tap William D WD Mellinghoff Ingo K IK Besmer Peter P Antonescu Cristina R CR Chen Yu Y Chi Ping P

Cancer discovery 20150108 3

<h4>Unlabelled</h4>Gastrointestinal stromal tumor (GIST), originating from the interstitial cells of Cajal (ICC), is characterized by frequent activating mutations of the KIT receptor tyrosine kinase. Despite the clinical success of imatinib, which targets KIT, most patients with advanced GIST develop resistance and eventually die of the disease. The ETS family transcription factor ETV1 is a master regulator of the ICC lineage. Using mouse models of Kit activation and Etv1 ablation, we demonstra ...[more]

PMID: 25572173

Similar Datasets

RNA-Seq of murine GIST-like tumors after Etv1 ablation

Project description:We used a mouse expressing three alleles 1) KitV558Delta/+ activating allele that develop GIST-like tumors in the cecum, 2) Etv1 flox/flox conditional knockout allele and 3) Rosa26-CreERT2 tamoxifen activated Cre allele. Mice were treated with either Tamoxifen (to delete Etv1) or corn oil (control). Cecal tumors were isolated for gene expression profiling by RNA-Seq.

2015-01-01 | GSE64608 | GEO

ETV1 knockdown in GIST cell lines

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. Two GIST cell lines (GIST48 and GIST882) were infected in duplicate with three shRNA viruses (Scrambled, ETV1sh1-B11TRCN0000013923, ETV1sh2-TRCN0000013925). Four days after infection, RNA was harvested for expression profiling.

2010-10-13 | E-GEOD-19396 | biostudies-arrayexpress

Mapping of ETV1 genomic binding sites in gastrointestinal stromal tumor (GIST).

Project description:ETV1 is highly expressed in GIST and their presumed precursors--the interstitial cells of Cajal. ETV1 is required for survival for both GIST and ICC and regulates GIST signature genes. Here, using Illumina-Solexa based next-generation sequencing of ETV1 chromatin immunoprecipates (ChIP-Seq), we define ETV1 binding sites in the GIST48 cell line. Crosslinked ChIP using input control ETV1 ChIP in GIST48 cells. Details: GIST48 cells were crosslinked for 15-minutes in 1% parformaldehyde. Cells were lysed and chromatin sheared using bioruptor. Sheared chromatin was incubated with anti-rabbit IgG dynabeads pre-conjugated with anti-ETV1 antibody (Abcam Ab81086, Lot 787879), washed, eluted, reverse cross-linked, and purified. Purified ChIP DNA was blunt-ended, ligated to Solexa adaptors, amplified with 18-cycles of PCR, and sequenced on Solexa Genome Analyzer. All reads (~36-bp) from ChIP-Seq were aligned to the human genome (build 36, or hg18) using the ELAND alignment software within the Illumina Analysis Pipeline. Unique reads mapped to a single best-matching location with no more than two mismatches were kept and used to generate genome-wide distribution of ETV1-binding and for peak identification. Redundant reads were considered once.

2010-10-14 | E-GEOD-22441 | biostudies-arrayexpress

ETV1 knockdown in GIST cell lines

2010-10-13 | GSE19396 | GEO

Mapping of ETV1 genomic binding sites in gastrointestinal stromal tumor (GIST).

2010-10-14 | GSE22441 | GEO

ETV1 binding sites in GIST and Melanoma cells

Project description:ETV1 is an oncogene in GIST and melanoma and a downstream transcriptional effector of MAP kinase signaling. Here, mapped the ETV1 binding sites in GIST and melanoma cell lines using ChIP-seq.

2018-04-15 | GSE80443 | GEO

Gastrointestinal stromal tumor GIST: gene expresssion and ChIP analyses

Project description:This SuperSeries is composed of the following subset Series: GSE19396: ETV1 knockdown in GIST cell lines GSE22433: Imatinib Treatment of GIST882 GSE22441: Mapping of ETV1 genomic binding sites in gastrointestinal stromal tumor (GIST). Refer to individual Series

2010-10-14 | E-GEOD-22852 | biostudies-arrayexpress

Kinome Profiling of Gastrointestinal Stromal Tumors Using Multiplexed Inhibitor Beads and Mass Spectrometry Identifies Wee1 as a Candidate Therapeutic Target

Project description:Purpose: Management of gastrointestinal stromal tumor (GIST) has been revolutionized by the identification of activating mutations in KIT and PDGFRA and the clinical application of receptor tyrosine kinase (RTK) inhibitors in the advanced disease setting. Stratification of GIST into molecularly defined subsets provides insight into clinical behavior and response to approved targeted therapies. Although these RTK inhibitors are effective in the majority of GIST, resistance to these agents remains a significant clinical obstacle. Development of effective treatment strategies for refractory GIST requires identification of novel targets to provide additional therapeutic options. Global kinome profiling has the potential to identify critical signaling networks and reveal protein kinases that are essential in GIST. Experimental Design: Using Multiplexed Inhibitor Beads and Mass Spectrometry paired with a super-SILAC kinome standard, we explored the majority of the kinome in GIST specimens from three GIST subtypes (KIT-mutant, PDGFRA-mutant and succinate dehydrogenase-deficient GIST) to identify novel kinase targets. In vitro and in vivo studies were performed to evaluate the utility of targeting the identified kinases in GIST. Results: Kinome profiling revealed distinct signatures in three GIST subtypes. PDGFRA-mutant GIST had elevated tumor associated macrophage (TAM) kinases and immunohistochemical analysis confirmed increased TAMs present in these tumors. Kinome profiling with loss-of-function assays revealed a significant role for G2-M tyrosine kinase, Wee1, in GIST survival. In vitro and in vivo studies revealed significant efficacy of MK-1775 (Wee1 inhibitor) in combination with avapritinib in both KIT and PDGFRA-mutant GIST cell lines, as well as notable efficacy of MK-1775 as a single agent in the PDGFRA-mutant line. Conclusions: These studies provide strong preclinical justification for the use of MK-1775 in GIST.

2021-09-09 | PXD020720 | Pride

ETV1 and FOXF1 cistrome in wildtype GIST48, GIST-T1, MDA-PCa2b, and ETV1 or FOXF1 knocked-down GIST48 cells

Project description:ETV1 and FOXF1 cistrome in wildtype GIST48, GIST-T1, MDA-PCa2b, and ETV1 or FOXF1 knocked-down GIST48 cells

| PRJNA417539 | ENA

mRNA-seq of intestinal epithelial cells isolated from Rnf20 and Rnf40 knockout mice

Project description:Intestinal epithelial cells (IECs) were isolated from the colon of Villin-CreERT2, Rnf20-flox and Rnf40-flox mice two weeks upon the Tamoxifen-induced, intestinal knockout of Rnf20 and Rnf40. RNA was isolated from snap-frozen IECs to perform mRNA-seq.

2021-06-16 | E-MTAB-9405 | biostudies-arrayexpress

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