MYC activation cooperates with Vhl and Ink4a/Arf loss to induce clear cell renal cell carcinoma

Sean T Bailey1,2, Aleisha M Smith1,2, Jordan Kardos1,2

  • 1Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.

Insights

Researchers developed two mouse models for kidney cancer, mimicking human papillary and clear cell renal carcinoma (RCC). These models, driven by MYC activation and Vhl/Cdkn2a deletion, offer valuable tools for advancing renal carcinoma research.

Area of Science:

  • Oncology
  • Genetics
  • Animal Models

Background:

  • Renal carcinoma (kidney cancer) is a prevalent and aggressive malignancy.
  • Its origins and resistance to chemotherapy are not fully understood.

Purpose of the Study:

  • To develop and characterize novel mouse models for renal carcinoma.
  • To mimic the genomic alterations observed in human papillary (pRCC) and clear cell (ccRCC) subtypes.

Main Methods:

  • Generation of mouse models with specific genetic alterations (MYC activation, Vhl and Cdkn2a deletion).
  • Histological analysis and RNA sequencing (RNAseq) of induced kidney tumors.
  • Comparison of mouse tumor characteristics with human RCC subtypes.

Main Results:

  • MYC activation in mice led to highly penetrant papillary renal carcinoma (pRCC) resembling Type 2 pRCC.
  • Combined MYC activation with Vhl and Cdkn2a deletion (VIM model) produced kidney tumors closely simulating human clear cell renal carcinoma (ccRCC).
  • Both models exhibit high penetrance, short latency, and histologic fidelity.

Conclusions:

  • The developed mouse models accurately recapitulate key genomic alterations and histological features of human pRCC and ccRCC.
  • These models represent significant contributions to kidney cancer research, facilitating further studies into pathogenesis and treatment.

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