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Cyclin D1 Determines Androgen Dependent DNA Damage Sensing and Repair

ABSTRACT: Murine prostate epithelial cells (PECs) were obtained from Ccnd1-/- and Ccnd1+/+ FvB mice (2-3 months of age). RNA extracted from PECs (3 technical replicates for each group) was labeled and used to probe Affymetrix 430_2.0 arrays.

ORGANISM(S): Mus musculus

PROVIDER: GSE57867 | GEO | 2014/09/01

SECONDARY ACCESSION(S): PRJNA248292

REPOSITORIES: GEO

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Cyclin D1 Determines Androgen Dependent DNA Damage Sensing and Repair

Project description:Murine prostate epithelial cells (PECs) were obtained from Ccnd1-/- and Ccnd1+/+ FvB mice (2-3 months of age). RNA extracted from PECs (3 technical replicates for each group) was labeled and used to probe Affymetrix 430_2.0 arrays. Three control Ccnd1+/+ PECs were compared to three Ccnd1+/+ PECs.

2014-09-01 | E-GEOD-57867 | biostudies-arrayexpress

Cyclin D1 determines estrogen depependent signaling in mouse mammary gland.

Project description:Ovariectomized virgin Ccnd1-/- and Ccnd1+/+ mice (5 weeks of age) were allowed to recuperate for 2 weeks. The mice were assigned to either replacement pellets containing E2 (0.75 mg, 60-day release) or pellet containing placebo. Mice were sacrificed at day 7 after pellet implantation. RNA extracted from mammary glands (3 each group) was labeled and used to probe Affymetrix 430_2.0 arrays. Six separate control Ccnd1+/+ C57BL/6 were compared to six Ccnd1-/- C57BL/6 mice. 3 mice in each group treated with placebo and three mice treated with E2

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Cyclin D1 determines estrogen depependent signaling in mouse mammary gland.

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Cyclin D1 determines estrogen dependent signaling in human breast cancer cell line MCF7

Project description:The CCND1 gene, which is frequently overexpressed in cancers, encodes the regulatory subunit of a holoenzyme that phosphorylates the retinoblastoma protein (pRb). It is known that cyclin D1 regulates ERα transactivation using heterologous reporter systems, the significance of this observation to E2 dependent gene activation is unknow. E2 stimulated MCF7 cells treated with cyclin D1 siRNA in order to analyze the genes regulated by estradiol in a cyclin D1 dependent manner. Hormone deprived MCF7 cells were treated with cyclin D1 siRNA or control siRNA and stimulated with E2 or vehicle

2013-07-18 | GSE48989 | GEO

Cyclin D1 Promotes Androgen-Dependent DNA Damage Repair in Prostate Cancer Cells.

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Cyclin D1 determines estrogen dependent signaling in human breast cancer cell line MCF7

Project description:The CCND1 gene, which is frequently overexpressed in cancers, encodes the regulatory subunit of a holoenzyme that phosphorylates the retinoblastoma protein (pRb). It is known that cyclin D1 regulates ERM-NM-1 transactivation using heterologous reporter systems, the significance of this observation to E2 dependent gene activation is unknow. E2 stimulated MCF7 cells treated with cyclin D1 siRNA in order to analyze the genes regulated by estradiol in a cyclin D1 dependent manner. Hormone deprived MCF7 cells were treated with cyclin D1 siRNA or control siRNA and stimulated with E2 or vehicle Four separate 10cm plates of MCF7 cells treated with control siRNA were compared to four 10cm plates of MCF7 cells treated with cyclin D1 siRNA. 2 plates in each group treated with vehicle and two plates treated with E2.

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Novel RNA-binding activity of MYF5 enhances Ccnd1/Cyclin D1 mRNA translation during myogenesis

Project description:Skeletal muscle contains long multinucleated and contractile structures known as muscle fibers, which arise from the fusion of myoblasts into nucleated myotubes during myogenesis. The myogenic regulatory factor (MRF) MYF5 is the earliest to be expressed during myogenesis and functions as a transcription factor in muscle progenitor cells (satellite cells) and myocytes. In mouse C2C12 myocytes, MYF5 is implicated in the initial steps of myoblast differentiation into myotubes. Ribonucleoprotein immunoprecipitation (RIP) analysis showed that MYF5 bound a subset of myoblast mRNAs; prominent among them was Ccnd1 mRNA, which encodes the key cell cycle regulator CCND1 (Cyclin D1). Biotin-RNA pulldown, UV-crosslinking, and gel shift experiments indicated that MYF5 was capable of binding the 3' untranslated region (UTR) and the coding region (CR) of Ccnd1 mRNA. MYF5 silencing in proliferating growing myoblasts revealed that and MYF5 promoted CCND1 translation, and it also modestly increased transcription of Ccnd1 mRNA. Importantly, silencing MYF5 reduced myoblast growth as well as differentiation of myoblasts into myotubes, while overexpressing MYF5 in C2C12 cells upregulated CCND1 expression. We propose that MYF5 enhances early myogenesis in part by coordinately elevating Ccnd1 transcription and Ccnd1 mRNA translation.

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Cyclin D1 regulates hepatic estrogen and androgen metabolism.

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