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Overview
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SV40, Simian Virus 40 is a polyomavirus that is found in both monkeys and humans. Like otherpolyomaviruses, SV40 is a DNA virus that has the potential to cause tumors. SV40 is believed tosuppress the transcriptional properties of tumor-suppressing p53 in humans through the SV40 largeT-antigen and SV40 small T-antigen. It is generally assumed that large T-antigen is the major proteininvolved in neoplastic processes and the large T-antigen predominantly exerts its effect throughderegulation of tumor suppressor p53, which is responsible for initiating regulated cell death(úapoptosisù), or cell cycle arrest when a cell is damaged. A mutated p53 gene may contribute touncontrolled cellular proliferation, leading to a tumor.
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Overview