A novel component of the ubiquitin pathway, ubiquitin carboxyl extension protein 1 is overexpressed in prostate cancer.

Abstract:

:Prostate cancer is among the most common tumors in industrialized nations. However, little is known about the molecular events underlying its development. In the present study we used suppressive subtraction hybridization (SSH) in combination with laser-assisted microdissection in order to compare gene expression between prostate carcinoma and the normal prostate proper. Both are mixed tissues which consist of an epithelial and a stromal compartment. We first compared mRNA (cDNA) expression by SSH and then used real-time quantitative RT-PCR analysis of microdissected tissue probes in order to verify differential expression of subtracted cDNA clones. We also used differentially expressed cDNAs for the synthesis of radiolabelled riboprobes in order to attribute differential expression to specific cell types in tissue sections by in situ hybridization. Using this approach we found an up-regulation of ubiquitin carboxyl extension protein 1 (UBCEP-1) mRNA in prostate carcinoma cells compared to the normal glandular epithelium of the prostate proper. UBCEP-1 mediated ubiquitin chain elongation may promote prostate carcinoma development by increasing via the proteasome pathway the degradation of proteins which are involved in growth inhibition or apoptosis.

journal_name

Int J Mol Med

authors

Ko Y,Hahn T,Lu H,Ma ZL,Chen J,Rothe M,Florin A,Fronhoffs S,Albers P,Sachinidis A,Vetter H,Kaminski A,Behrens P,Wellmann A,Wernert N

subject

Has Abstract

pub_date

2005-02-01 00:00:00

pages

183-96

issue

2

eissn

1107-3756

issn

1791-244X

journal_volume

15

pub_type

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