Deletion, Mutation, and Loss of Expression of KLF6 in Human Prostate Cancer

Overview

Journal Am J Pathol

Publisher Elsevier

Specialty Pathology

Date 2003 Mar 26

PMID 12651626

Citations 50

Authors

Ceshi Chen

Eija-Riitta Hyytinen

Xiaodong Sun

Heikki J Helin

Pasi A Koivisto

Henry F Frierson Jr

Robert L Vessella

Jin-Tang Dong

Affiliations

Soon will be listed here.

Abstract

Kruppel-like factors (KLFs) are a group of transcription factors that appear to be involved in different biological processes including carcinogenesis. In a recent study, KLF6 was reported as a tumor suppressor gene in prostate cancer because of its frequent loss of heterozygosity (LOH) and mutation as well as functional suppression of cell proliferation. Loss of chromosomal locus spanning KLF6 is relatively infrequent in other published studies of prostate cancer, however. To clarify the role of KLF6 in prostate cancers, particularly those that are high grade, we examined KLF6 for deletion, mutation, and loss of expression in 96 prostate cancer samples including 21 xenografts/cell lines. Loss of heterozygosity occurred in 4 (19%) of 21 xenografts/cell lines and 8 (28%) of 29 informative tumors. Fourteen of the 96 (15%) samples showed 15 somatic sequence changes in the KLF6 gene, including 7 that changed KLF6 peptide sequences, 4 that did not, and 4 that were located in untranslated regions. Expression levels of KLF6 were significantly lost in 4 of 20 (20%) xenografts/cell lines of prostate cancer, as detected by RT-PCR and Northern blot analysis. These findings indicate that significant genetic alterations of KLF6 occur in a minority of high-grade prostate cancers.

Citing Articles

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