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Transcription profiling of mouse embyronic fibroblasts from wild type and E2F2 null mice to generate a signature for E2F2 pathway activation

ABSTRACT: We have used primary MEFs derived from wild type and E2F4 null mice growing asynchrounously in serum to generate a signature for E2F4 pathway activation. 10 wild type and 10 E2F4 null samples were each assayed using the Affymetrics Mouse Genome 430A 2.0 array. Experiment Overall Design: MEFs from 3 wild type embryos on a total of 10 cultutes were grown and harvested for RNA. MEFS from 5 E2F4 null embryos were grown on a total of 10 cultures.

ORGANISM(S): Mus musculus

SUBMITTER: Eran Andrechek

PROVIDER: E-GEOD-11039 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Patterns of cell signaling pathway activation that characterize mammary development.

Andrechek Eran R ER Mori Seiichi S Rempel Rachel E RE Chang Jeffrey T JT Nevins Joseph R JR

Development (Cambridge, England) 20080611 14

Previous work has detailed the histological and biochemical changes associated with mammary development and remodeling. We have now made use of gene expression profiling, and in particular of the previously described signatures of cell signaling pathway activation, to explore the events associated with mammary gland development. We find that there is elevated E2F-specific pathway activity prior to lactation and relatively low levels of other important signaling pathways, such as RAS, MYC and SRC ...[more]

PMID: 18550711

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Expression Data from wild type and E2F4 null MEFs

Project description:We have used primary MEFs derived from wild type and E2F4 null mice growing asynchrounously in serum to generate a signature for E2F4 pathway activation. 10 wild type and 10 E2F4 null samples were each assayed using the Affymetrics Mouse Genome 430A 2.0 array. Keywords: Primary MEFs from wild type and E2F4 null mice

2008-07-11 | GSE11039 | GEO

Mus musculus

Project description:Expression Data from wild type and E2F4 null MEFs

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G0S2 functions as a tumor supressor through represssion of Myc signaling pathways

Project description:Comparions on gene expression in murine embyonic fibroblasts (MEFs) wild-type vs G0S2 null MEFs

2016-06-01 | GSE74696 | GEO

Transcription profiling of mouse placentas from wild-type and Rb -/- knock-out mice and embronic day 11.5 placentas from wild-type and Rb -/-;E2f4 -/- double knock-outs reveals E2F4 cooperates with pRB in the development of extra-embryonic, not embryonic, tissues

Project description:Homozygous mutation of the murine retinoblastoma tumor suppressor gene, Rb, results in embryonic lethality between E13.5 and E15.5 with defects in cellular proliferation, differentiation and apoptosis. Many of these defects are suppressed by mutation of an activating E2F, E2f1 or E2f3, indicating that they are key downstream targets of the retinoblastoma protein, pRB. In this study, we assess how E2F4 contributes to the developmental consequences of pRb-loss. In stark contrast to the activating E2Fs, the homozygous mutation of E2f4 shortened the lifespan of Rb-/- embryos. This resulted from an exacerbation of the placental defect of the Rb-/- mice indicating that E2F4 and pRB cooperate in the development of this tissue. Further analyses indicated that this defect reflects an increase in trophectoderm-like cells. Under conditions where the placenta was wild-type but the embryo mutant for E2f4 and pRb embryos survived to birth and exhibited all of the defects that were observed in the E2f4 and Rb single mutant embryos. Thus, while pRB and E2F4 cooperate in placental development, they play largely non-overlapping roles the development of many embryonic tissues. Experiment Overall Design: In one experiment, embryonic Day 13.5 placentas from wild-type and Rb -/- knock-out mice were compared. In the second experiment, embronic day 11.5 placentas from wild-type and Rb -/-;E2f4 -/- double knock-out mice were compared.

2009-06-24 | E-GEOD-13753 | biostudies-arrayexpress

Expression changes in mouse embryo fibroblasts associated with the loss of menin (menin-null)

Project description:Multiple endocrine neoplasia, type 1 (MEN1) is an autosomal dominant familial cancer syndrome characterized primarily by endocrine tumors of the parathyroids, anterior pituitary and enteropancreatic endocrine tissues. Affected individuals carry a germline loss-of-function mutation of the MEN1 gene, and tumors arise after loss of the second allele. Homozygous loss of Men1 in the germline of mice results in early embryonic lethality, with defective development of neural tube, heart, liver, and craniofacial structures. We generated immortalized Wild type (Wt) and menin-null mouse embryo fibroblast (MEF) cell lines and evaluated their characteristics, including global expression patterns. The Wt and menin-null cell lines were aneuploid, and the nulls did not display tumorigenic characteristics in soft-agar assay. Expression arrays in menin-null MEFs revealed altered expression of several extracellular matrix proteins that are critical in organogenesis. Specifically, transcripts for fibulin-2 (Fbln2), periostin (Postn) and versican (Cspg2, chondroitin sulfate proteoglycan), genes critical for the developing heart and known to be induced by TGF-beta, were decreased in their expression in menin-null MEFs. Fbln2 expression was the most affected, and the reduction in menin-null MEFs for Fbln2, Postn and Cspg2 was 16.18, 5.37 and 2.15-fold respectively. Menin-null MEFs also showed poor response to TGF-beta-induced Smad3-mediated transcription in a reporter assay, supporting a role for menin in this pathway. The expression changes associated with the loss of the tumor suppressor menin provide insights into the defective organogenesis observed during early embryonic development in Men1-null mouse embryos. Keywords: Wild type and menin-null mouse embryo fibroblasts

2007-06-01 | GSE6513 | GEO

E2F4 cooperates with pRB in the development of extra-embryonic, not embryonic, tissues

2009-06-08 | GSE13753 | GEO

Chromatin immunopreciptiation of human BJ-T cells with E2F2 and EwF4 antibodies

Project description:ChIp on chip with E2F2 or E2F4 antibodies on BJ-T cells.

2009-11-16 | E-MEXP-2169 | biostudies-arrayexpress

G0S2 functions as a tumor supressor through represssion of Myc signaling pathways

Project description:Comparions on gene expression in murine embyonic fibroblasts (MEFs) wild-type vs G0S2 null MEFs Total RNA obtained from spontanously immortalized MEF cell line E2 from wild-type C57BL/6 mice (E2) and spontaneously immortalized MEF cell line E6 from G0S2 knockout C57BL/6 mice; MEF lines were used at passage number 10-12

2016-06-01 | E-GEOD-74696 | biostudies-arrayexpress

Project description:Transcriptome sequencing of wild-type and Lrig-null MEFs

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DMEM treated WT and PKBa -/- MEFs

Project description:Mouse embryonic fibroblasts (MEFs) were generated from 13.5-day-old embryos obtained from heterozygous PKBa mice intercrosses (Yang et al., 2003). Briefly, after dissection of head and visceral organs for genotyping, embryos were minced and trypsinized for 30 min at 37°C. Embryonic fibroblasts were then plated and maintained in Dulbecco’s Modified Eagle Medium (DMEM) with 10% foetal calf serum (FCS) (Life Technologies), 100 units/ml of penicillin and 100 mg/ml of streptomycin at 37°C in an atmosphere of 5% CO2. All experiments were performed with wild-type and PKBa-/- MEFs between 15-20 passages. To induce adipocyte differentiation, 2-day-postconfluent cells (day 0) were treated with DMEM supplemented with 10% FCS, 8 mg/ml biotin, 4 mg/ml pantothenate, 0.5 mM 3-isobutyl-1-methylxanthine, 1 mM dexamethasone and 10 mg/ml insulin (all from Sigma). Total RNA was extracted from cells using TRIzol (Invitrogen) according to the manufacturer’s instructions. Keywords: repeat

2005-09-01 | GSE2746 | GEO

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