A transgenic strategy for analyzing the regulatory regions of the human prostate-specific antigen gene: potential applications for the treatment of prostate cancer (Review).

Abstract:

:Prostate-specific antigen (PSA) has been used clinically as a marker for the diagnosis and staging of prostate cancer due to its specific expression in prostate epithelial cells. In addition to its medical importance, its complex hormonal and tissue-specific regulation makes it an attractive model to study gene regulation. Two approaches have been applied to the identification of regulatory regions which confer this specific expression pattern. In vitro analysis of the regulatory regions of the human PSA gene using promoter reporter constructs and tumor cell lines has revealed a number of the DNA sequences involved in the hormone-dependent expression of PSA. We have pursued an alternative in vivo approach using transgenic animal technology, which is the focus of this review. Using this second approach, a transgenic mouse was generated using a 14 kilobase (kb) region of the human PSA gene encompassing the coding region and intervening sequences as well as 6 kb of upstream sequence and 2 kb of downstream sequence. This genomic DNA clone confers a PSA expression pattern in mice which appears to be very similar if not identical to that of humans, allowing us to investigate tissue-specificity and developmental regulation of PSA expression. In addition, these mice, for which PSA is a self-antigen, provide a model to test the feasibility and efficacy of PSA-directed immunotherapy for prostate cancer. The further identification of the PSA regulatory regions important for tissue-specificity may ultimately allow the design of new therapeutics for the treatment of prostate cancer.

journal_name

Int J Mol Med

authors

Willis RA,Wei C,Turner MJ,Callahan BP,Pugh AE,Barth RK,Lord EM,Frelinger JG

doi

10.3892/ijmm.1.2.379

subject

Has Abstract

pub_date

1998-02-01 00:00:00

pages

379-86

issue

2

eissn

1107-3756

issn

1791-244X

journal_volume

1

pub_type

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