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RTVP-1, a tumor suppressor inactivated by methylation in prostate cancer

Chengzhen Ren1, Likun Li, Guang Yang

  • 1Scott Department of Urology, Baylor College of Medicine, Houston, Texas, USA.

Cancer Research
|February 12, 2004
PubMed

Insights

The novel RTVP-1 gene, regulated by p53, shows reduced expression in prostate cancer. Epigenetic changes suggest RTVP-1 acts as a tumor suppressor, offering new therapeutic targets for prostate cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • A novel p53-regulated gene, homologous to human RTVP-1 (Renal Tumor and Brain Tumor Associated Protein 1) or GLIPR (Glia Maturation Factor Gamma Like), was previously identified in mouse prostate cancer.
  • RTVP-1 was initially identified in brain cancers.

Purpose of the Study:

  • To investigate the role of human RTVP-1 in prostate cancer.
  • To determine if human RTVP-1 is regulated by p53 and induces apoptosis.
  • To analyze RTVP-1 expression levels and epigenetic modifications in human prostate cancer specimens.

Main Methods:

  • Analysis of p53 regulation of human RTVP-1.
  • Assessment of RTVP-1's ability to induce apoptosis in prostate cancer cell lines.
  • Quantitative analysis of RTVP-1 mRNA and protein expression in human prostate cancer tissues versus normal tissues.
  • Investigation of epigenetic alterations associated with RTVP-1 in prostate cancer.

Main Results:

  • Human RTVP-1 is confirmed to be p53-regulated.
  • RTVP-1 expression induces apoptosis in human prostate cancer cell lines.
  • RTVP-1 mRNA and protein levels are significantly down-regulated in human prostate cancer specimens compared to normal prostate tissue.
  • Epigenetic changes indicate RTVP-1 functions as a tumor suppressor in prostate cancer.

Conclusions:

  • The human RTVP-1 gene is a p53-regulated gene implicated in prostate cancer.
  • Down-regulation and epigenetic modifications of RTVP-1 suggest its role as a tumor suppressor in prostate cancer.
  • RTVP-1 represents a potential therapeutic target for prostate cancer treatment.

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