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Annu Rev Microbiol. 2003;57:609-39.

Kaposi's sarcoma-associated herpesvirus immunoevasion and tumorigenesis: two sides of the same coin?

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1
Molecular Virology Program, Hillman Cancer Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania 15213-1863, USA. psm9@pitt.edu

Abstract

Kaposi's sarcoma-associated herpesvirus (KSHV) [or human herpesvirus 8 (HHV-8)] is the most frequent cause of malignancy among AIDS patients. KSHV and related herpesviruses have extensively pirated cellular cDNAs from the host genome, providing a unique opportunity to examine the range of viral mechanisms for controlling cell proliferation. Many of the viral regulatory homologs encode proteins that directly inhibit host adaptive and innate immunity. Other viral proteins target retinoblastoma protein and p53 control of tumor suppressor pathways, which also play key effector roles in intracellular immune responses. The immune evasion strategies employed by KSHV, by targeting tumor suppressor pathways activated during immune system signaling, may lead to inadvertent cell proliferation and tumorigenesis in susceptible hosts.

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