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Comparing Metastatic Clear Cell Renal Cell Carcinoma Model Established in Mouse Kidney and on Chicken Chorioallantoic Membrane
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Comparing Metastatic Clear Cell Renal Cell Carcinoma Model Established in Mouse Kidney and on Chicken Chorioallantoic Membrane

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Expression of the PTTG1 oncogene is associated with aggressive clear cell renal cell carcinoma

Bill Wondergem1, Zhongfa Zhang, Dachuan Huang

  • 1Laboratories of Cancer Genetics, Cytogenetics, and Computational Biology, Van Andel Research Institute; Department of Urology, Spectrum Health Hospital, Grand Rapids, MI 49503, USA.

Cancer Research
|July 19, 2012
PubMed

Insights

The pituitary tumor transforming gene (PTTG1) is amplified and overexpressed in clear cell renal cell carcinoma (ccRCC), promoting tumor growth and invasion. PTTG1 may represent a novel therapeutic target for ccRCC treatment.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • The pituitary tumor transforming gene (PTTG1) is an oncogene involved in various cancers.
  • Clear cell renal cell carcinoma (ccRCC) is characterized by specific chromosomal abnormalities, including 5q amplifications of unclear significance.
  • PTTG1 is located in the 5q region amplified in ccRCC.

Purpose of the Study:

  • To investigate the functional role of PTTG1 in ccRCC tumorigenesis.
  • To determine the clinical significance of PTTG1 amplification and overexpression in ccRCC.
  • To identify potential therapeutic targets within the PTTG1 pathway in ccRCC.

Main Methods:

  • Analysis of PTTG1 amplification and expression in ccRCC tumor tissues.
  • Assessment of PTTG1's role in ccRCC progression using preclinical models.
  • Gene expression analysis to identify PTTG1-regulated genes and pathways.
  • Correlation of PTTG1 and ECT2 expression with clinical features and patient prognosis.

Main Results:

  • PTTG1 was found to be amplified and overexpressed in ccRCC tumors.
  • PTTG1 amplification and overexpression correlated with high tumor grade and poor patient prognosis.
  • PTTG1 ablation in preclinical models reduced ccRCC tumorigenesis and invasion.
  • PTTG1 influences the expression of ECT2, a proto-oncogene associated with invasive disease.

Conclusions:

  • PTTG1 acts as an oncogene in ccRCC, driven by amplification on chromosome 5q.
  • PTTG1 expression is linked to aggressive tumor characteristics and poor outcomes.
  • PTTG1 and its downstream target ECT2 represent potential novel therapeutic targets for ccRCC.

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