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Hematology 2007

Burkitt Lymphoma: Revisiting the Pathogenesis of a Virus-Associated Malignancy

Gemma L. Kelly and Alan B. Rickinson

Correspondence: Alan Rickinson, PhD, CRUK Institute for Cancer Studies, University of Birmingham, Vincent Drive, Edgbaston, Birmingham B15 2TT, United Kingdom; phone +44 (0)121 414 4492; a.b.rickinson{at}bham.ac.uk

Abstract

Burkitt lymphoma (BL), a tumor occurring in endemic, sporadic and AIDS-associated forms, is the classic example of a human malignancy whose pathogenesis involves a specific cellular genetic change, namely, a chromosomal translocation deregulating expression of the c-myc oncogene, complemented in many cases by the action of an oncogenic virus, the Epstein-Barr virus (EBV). Here we review recent work in two complementary areas of research: (1) on cellular genetic changes that occur in addition to the c-myc translocation in BL, in particular the capacity of p53/ ARF pathway breakage or of c-myc mutation to decouple the pro-proliferative effects of c-myc deregulation from its pro-apoptotic effects; and (2) on a postulated role for EBV in BL pathogenesis, through adopting restricted forms of virus latent gene expression that remain compatible with the c-myc–driven growth program but offer the tumor additional protection from apoptosis. We stress the many fundamental questions that remain to be resolved and, in that regard, highlight the general lessons that might be learned through understanding how two other infectious agents, malaria and HIV, dramatically enhance BL incidence.


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Copyright © 2007 by the American Society of Hematology.