Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA139643 | ENA |
REPOSITORIES: ENA
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Project description:The p53 gain of function p53R172H promotes accelerated tumor growth and progression to carcinoma. To identify gene expression changes associated with the oncogenic function of mutant p53 we compared the expression profiles of oral tumors induced by activation of oncogenic K-ras and p53 gain- or loss-of-function mutations Oral tumors were induced by activation of endogenous oncogenic K-rasG12D and p53 loss- or gain-of-function mutations (p53R172H) Oral tumors from mice carrying the p53R172H mutation or deletion of p53 were collected for gene expression analysis
2012-03-30 | E-GEOD-28203 | biostudies-arrayexpress
Project description:The p53 gain of function p53R172H promotes accelerated tumor growth and progression to carcinoma. To identify gene expression changes associated with the oncogenic function of mutant p53 we compared the expression profiles of oral tumors induced by activation of oncogenic K-ras and p53 gain- or loss-of-function mutations Oral tumors were induced by activation of endogenous oncogenic K-rasG12D and p53 loss- or gain-of-function mutations (p53R172H)
2012-03-31 | GSE28203 | GEO
Project description:Transactivation-deficient p53 Mutants in Ras-induced Cellular Senescence
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Project description:PURPOSE: To provide a detailed gene expression profile of the normal postnatal mouse cornea. METHODS: Serial analysis of gene expression (SAGE) was performed on postnatal day (PN)9 and adult mouse (6 week) total corneas. The expression of selected genes was analyzed by in situ hybridization. RESULTS: A total of 64,272 PN9 and 62,206 adult tags were sequenced. Mouse corneal transcriptomes are composed of at least 19,544 and 18,509 unique mRNAs, respectively. One third of the unique tags were expressed at both stages, whereas a third was identified exclusively in PN9 or adult corneas. Three hundred thirty-four PN9 and 339 adult tags were enriched more than fivefold over other published nonocular libraries. Abundant transcripts were associated with metabolic functions, redox activities, and barrier integrity. Three members of the Ly-6/uPAR family whose functions are unknown in the cornea constitute more than 1% of the total mRNA. Aquaporin 5, epithelial membrane protein and glutathione-S-transferase (GST) omega-1, and GST alpha-4 mRNAs were preferentially expressed in distinct corneal epithelial layers, providing new markers for stratification. More than 200 tags were differentially expressed, of which 25 mediate transcription. CONCLUSIONS: In addition to providing a detailed profile of expressed genes in the PN9 and mature mouse cornea, the present SAGE data demonstrate dynamic changes in gene expression after eye opening and provide new probes for exploring corneal epithelial cell stratification, development, and function and for exploring the intricate relationship between programmed and environmentally induced gene expression in the cornea. Keywords: other
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Project description:We induced liver tumors by transforming liver progenitor cells (LPC) with retroviruses expressing oncogenic Ras coupled to tetracycline transactivator together with an inducible shRNA targeting p53. Transformed LPCs were orthotopical transplanted into recipient livers and after tumor onset mice were fed with either Doxycycline containing chow or normal chow. 8 days later tumors were harvested and RNA was extracted. RNA was extracted using Trizol. For microarray experiment, HrasV12 driven liver tumors harboring tet-off shp53 were treated with Doxycycline for 0 day (p53 OFF, as control) or 8 days (p53 ON). Samples were assessed by Affymetrix 430 2.0 mouse microarray.
2013-11-11 | E-GEOD-52091 | biostudies-arrayexpress