Critical role of E6 oncoprotein in cervical cancer: involved in cell proliferation, angiogenesis and apoptosis

Pathophysiology of Cell Injury Journal Volume 3, Issue 2, pages 35-45 December 2014

Brian S. Singer; Jone A. Fishbein; Stefan K. Blino


Cervical cancer represents one of the most common malignancies in women worldwide and predominantly affects women of poor socioeconomic status. Persistent infection with high-risk human papilloma virus (HPV) is an essential factor for development of cervical cancer. The advent of functional genomics and proteomicshas provided hope of discovering novel biological markers for use in the screening, early diagnosis, prognostication and prediction of response to therapy. E6 and E7 oncoproteins of HPV have been known to play major roles in malignant transformation of cervical cells. Accumulating evidences have suggested that E6 oncoprotein may also contribute to cervical carcinogenesis through modulating cellular signaling pathways. Multiple mechanisms, including activation of EGFR or inflammatory cell signaling pathway, have been implicated in malignant transformation by HPV. Therefore, targeting E6 may be a rational approach for chemoprevention and treatment of cervical cancer, and understanding its oncogenic processes may help us to design novel therapeutic strategies. In this review, we discussed the roles of E6 oncoprotein in cervical carcinogenesis, altering several cellular signaling pathways involved in cell proliferation, angiogenesis and apoptosis.

Keywords: HPV; E6; Cervical cancer; Oncoprotein

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