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Autophagic Punctum

Anti-autophagic Bcl-2

Not just an innocent bystander

, , , &
Pages 231-232 | Received 06 Nov 2010, Accepted 15 Nov 2010, Published online: 01 Feb 2011
 

Abstract

Bcl-2, originally identified as a universal inhibitor of apoptotic cell death, has since been implicated in suppressing autophagy, the cell’s quality control mechanism. Our recent study demonstrates that the anti-autophagic aspect of Bcl-2 can function as a promoter of oncogenic growth, independently of its role in apoptosis signaling. It is likely that the increase in Bcl-2 often seen in breast and other cancers might render cells error-prone by blunting autophagy, while concomitantly keeping damaged cells alive. The outcome of such a ‘double hit’ of Bcl-2 may synergistically promote tumor growth and increase the chance of cancer development and drug resistance.

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