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Down-regulation of cell signaling in HPV-infected cervical cells promotes malignancy.(human papillomavirus)(Brief Article)
2002 OCT 3 - (NewsRx.com & NewsRx.net) -- A collaboration of scientists from Harvard Medical School and Brigham and Women's Hospital have uncovered a key genetic event in the progression of malignant cervical cancer - and a potential new therapeutic target.
Dr. G. Paolo Dotto and colleagues have found that the decreased expression of a single gene, called Notch1, is instrumental in the late stages of human papillomavirus-induced cervical cancer. The report is published in the September 1, 2002, issue of Genes & Development.
Human papillomavirus (HPV) is the most prevalent sexually transmitted infection in the world, and HPV infection is associated with the majority of the 400,000 new cervical cancer cases reported annually. Previous genetic studies have, to some degree, elucidated the molecular mechanism of HPV-induced cervical carcinogenesis: The HPV genome encodes two viral proteins, E6 and E7, which interfere with two of the infected cell's primary tumor suppressor pathways (p53 and Rb).
However, it is thought that while basal levels of E6/7 expression are necessary for HPV-induced cervical tumorigenesis, other genetic changes are needed to fully transform a normal cervical cell into a malignant one.
Dotto and colleagues have identified one such change.
Dotto and colleagues have discovered that the down-regulation of a cell signaling molecule, called Notch1, in HPV-infected cervical ...
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Source: HighBeam Research, Down-regulation of cell signaling in HPV-infected cervical cells...