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Modulation of oncogenic potential by alternative gene use in human prostate cancer.

Nature medicine | Mar 13, 1999

Only a small percentage of primary prostate cancers have genetic changes. In contrast, nearly 90% of clinically significant human prostate cancers seems to express high levels of the nuclear phosphoprotein pp32 by in situ hybridization. Because pp32 inhibits oncogene-mediated transformation, we investigated its paradoxical expression in cancer by comparing the sequence and function of pp32 species from paired benign prostate tissue and adjacent prostatic carcinoma from three patients. Here we demonstrate that pp32 is expressed in benign prostatic tissue, but pp32r1 and pp32r2, closely-related genes located on different chromosomes, are expressed in prostate cancer. Although pp32 is a tumor suppressor, pp32r1 and pp32r2 are tumorigenic. Alternative use of the pp32, pp32r1 and pp32r2 genes may modulate the oncogenic potential of human prostate cancer.

Pubmed ID: 10086381 RIS Download

Mesh terms: Alternative Splicing | Humans | Male | Nuclear Proteins | Phosphoproteins | Prostatic Hyperplasia | Prostatic Neoplasms | RNA, Messenger