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14-3-3sigma, the double-edged sword of human cancers Li Z; Liu JY; Zhang JTAm J Transl Res 2009[Jun]; 1 (4): 326-4014-3-3sigma is a member of a highly conserved family of 14-3-3 proteins that are present in all eukaryotic organisms. 14-3-3sigma has been considered as a tumor suppressor with reduced expression in some human cancers while its increased expression causes resistance to anticancer agents and radiation that cause DNA damages. The increased expression of 14-3-3sigma may also predict poor prognosis in some human cancers. Thus, 14-3-3sigma may play an important role as a double-edged sword in human cancers, which may attribute to its property as a molecular chaperone by binding to various protein ligands important to many cellular processes such as cell cycle checkpoint regulation and apoptosis in response to DNA damages. In this article, we will review recent studies and progresses in understanding 14-3-3sigma as a double-edged sword in human cancers.ä |
