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ANDROGEN REPRESSION OF CYTOKERATIN GENE EXPRESSION DURING RAT PROSTATE DIFFERENTIATION:EVIDENCE FOR AN EPITHELIAL STEM CELL-ASSOCIATED MARKER
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作者 王晓怀 Jer-TsongHsieh 《Chinese Medical Sciences Journal》 CAS CSCD 1994年第4期237-241,共5页
Cytokeratin (CK) 8 mRNA expression in developing and degenerating rat prostate was studied using in situ hybridization with an antisense RNA-probe. It was found that : 1) the CK 8 antisense probe was accumulated only ... Cytokeratin (CK) 8 mRNA expression in developing and degenerating rat prostate was studied using in situ hybridization with an antisense RNA-probe. It was found that : 1) the CK 8 antisense probe was accumulated only within prostatic epithelial cells ; 2) after castration, CK 8 mRNA signals in ventral prostute(VP) sections were significantly increased, and elevated CK 8 mRNA expression persisted even long after prostate involution was complete; and 3) during prostate development,the strongest CK 8 mRNA staining was found in the early neonatal prostatic epithelia which were composed mainly of prostatic stem cells. Thereafter, a shift of CK 8 mRNA staining to peripheral regions and decreased overall CK 8 mRNA levels were noted. These data indicate that excessive expression of CK 8 mRNA is a characteristic of prostatic stem cells, and CK molecules are excellent markers for determing the hierarchical pathway of cell differentiation in prostate epithelium. 展开更多
关键词 prostate differentiation CYTOKERATIN in situ hybridization
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