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James Pipas

James Pipas

Program: Cancer Virology

412-624-4691 559B Crawford Hall
4249 Fifth Avenue
Pittsburgh PA

Simian virus 40 (SV40) belongs to a small collection of viruses that induce tumors. We utilize SV40 as a model system for understanding the molecular events that drive tumorigenesis. Our studies focus on the virus-encoded master regulatory protein, large T antigen. Large T antigen controls several aspects of viral infection including DNA replication, transcription and virion assembly. In addition, T antigen is necessary and, in most cases, sufficient for SV40-mediated tumorigenesis. T antigen induces tumors in rodents and the neoplastic transformation of cells in culture by binding to key cellular proteins that regulate proliferation and survival, and altering their activities. Our basic strategy is to use a combination of genetics and proteomics to identify cellular targets of T antigen and then to use molecular biology and mouse model approaches to understand how these actions contribute to tumorigenesis.

Research Interests and Keywords
  • Simian virus 40 (SV40)
  • T antigen
  • tumorigenesis
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