Abstract
Early work on cancer showed that some retroviruses contain oncogenes that promote tumorigenesis, but how viruses that do not contain oncogenes could cause cancer was unclear. A series of studies in the 1980s uncovered another mechanism: insertional mutagenesis in which viral sequences drove aberrant expression of endogenous cellular proto-oncogenes. In this excerpt from his forthcoming book on the history of cancer research, Joe Lipsick looks back at these discoveries, how the work led to identification of new oncogenes and tumor suppressors, and the perils of the phenomenon for early gene therapy.
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