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PTEN intact and NULL prostates in intact and castrate mice.

ABSTRACT: We performed expression profiling of prostates of 3 month wild-type and PTEN NULL mice and assessed the response to 3 days of castration.

ORGANISM(S): Mus musculus

PROVIDER: GSE24691 | GEO | 2011/05/19

SECONDARY ACCESSION(S): PRJNA132265

REPOSITORIES: GEO

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PTEN intact and NULL prostates in intact and castrate mice.

Project description:We performed expression profiling of prostates of 3 month wild-type and PTEN NULL mice and assessed the response to 3 days of castration. Seven three month old WT and PbCre x PTEN f/f (PTEN NULL) mice were used. They are in the C57B6 background. Three mice in each group were castrated. Three days after castration, the prostate were harvested and RNA isolated by standard protocols and analyzed by expression profiling.

2011-05-19 | E-GEOD-24691 | biostudies-arrayexpress

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Response to catration in PTEN null and PTEN null ERG expressing mouse prostates

Project description:We performed expression mouse profiling of prostates of 3 month PTEN f/f and Pten f/f;R26(ERG) mice and assessed the response to 3 days of castration. Mice are in the C57B6 background. Two mice in each group were castrated. Three days after castration, the prostate were harvested and RNA isolated by standard protocols and analyzed by expression profiling.

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Expression data from conditional Klf5 knockout Pten-null mouse prostates

Project description:KLF5 is a basic transcription factor that regulates multiple biological processes, but its function in tumorigenesis appears contradictory in the current literature, with some studies showing tumor suppressor activity and others showing tumor promoting activity. In this study, we examined the function of Klf5 in prostatic tumorigenesis using mice with prostate specific deletion of Klf5 and Pten, both of which are frequently deleted in human prostate cancer. Histological and molecular analyses demonstrated that when one Pten allele was deleted, which causes mouse intraepithelial neoplasia (mPIN), Klf5 deletion accelerated the emergence and progression of mPIN. When both Pten alleles were deleted, which causes prostate cancer, Klf5 deletion promoted tumor growth and caused more severe morphological and molecular alterations, and homozygous deletion of Klf5 was more effective than hemizygous deletion. Unexpectedly, while Klf5 deletion clearly promoted tumorigenesis in luminal cells, it actually diminished the numbers of Ck5-positive basal cells in the Pten-null tumors. Klf5 deletion also increased the cell proliferation rate in tumors with Pten deletion, which involved extensive activation of the PI3K/AKT and MAPK mitogenic signaling pathways and inactivation of the p15 cell cycle inhibitor. Global gene expression and pathway analyses demonstrated that multiple mechanisms could be responsible for the tumor promoting effect of Klf5 deletion, We used microarrays to detail the global programme of gene expression of Klf5-wildtype and Klf5-null mouse dorsal prostates under Pten-null context to figure out the differential expression profiling underlying tumorigenesis 4 Klf5-wildtype and 4 Klf5-null mouse (6 months age) dorsal prostates under Pten-null context were used for RNA extraction and hybridization on Affymetrix mouse st 1.0 array

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Expression data from conditional Klf5 knockout Pten-null mouse prostates

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Expression profile of Pten loss and ERG overexpression in mouse prostate

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Expression profile of Pten loss and ERG overexpression in mouse prostate

Project description:We performed expression mouse profiling of prostates of 3 month WT, ERG, PTEN f/f and Pten f/f;ERG mice. For WT and ERG prostates, entire prostates were dissected and total RNA immediated harvested. For Pten f/f and Pten f/f;ERG prostates, the Ventral Lobe was dissected. Mice are in the C57B6 background. The prostate were harvested and RNA isolated by standard protocols and analyzed by expression profiling.

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