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Updated: Aug 15, 2026

An Orthotopic Murine Model of Human Prostate Cancer Metastasis
06:48

An Orthotopic Murine Model of Human Prostate Cancer Metastasis

Published on: September 19, 2013

Loss of p53 function leads to metastasis in ras+myc-initiated mouse prostate cancer

T C Thompson1, S H Park, T L Timme

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

Oncogene
|March 2, 1995
PubMed

Insights

Loss of p53 tumor suppressor gene function accelerates prostate cancer development and metastasis in mice. This study highlights p53

Area of Science:

  • Oncology
  • Genetics
  • Molecular Biology

Background:

  • Tumor suppressor genes, like p53, are critical in preventing cancer.
  • Oncogenes (e.g., ras, myc) drive cell growth and can initiate cancer.
  • Understanding their interactions is key to cancer research.

Purpose of the Study:

  • To investigate how p53 gene status affects cancer progression when oncogenes are activated.
  • To model prostate cancer development and metastasis using the mouse prostate reconstitution (MPR) system.

Main Methods:

  • Utilized p53 'knockout' mouse urogenital sinus tissue.
  • Employed retroviral transduction of ras and myc oncogenes within the MPR model.
  • Analyzed tumor formation, metastasis, and p53 allele status.

Main Results:

  • Wild-type p53 mice showed hyperplasia but limited cancer.
  • p53 mutant mice (heterozygous and homozygous) developed prostate cancer in 100% of cases.
  • Metastasis to lung, lymph nodes, bone, and liver occurred in 95% of p53 mutant mice.
  • Cancer progression correlated with loss or deletion of the wild-type p53 allele.
  • Metastases did not always originate from the dominant clone in primary tumors.

Conclusions:

  • p53 loss significantly promotes prostate cancer initiation, progression, and metastasis.
  • The loss of wild-type p53 function is a critical event in advanced prostate cancer.
  • Metastatic seeding may involve minor clones within the primary tumor.

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