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- W2067149213 abstract "Bcl-2 family members are key modulators of apoptosis that have recently been shown to also regulate autophagy. It has been previously reported that Bcl-2 and Bcl-XL bind and inhibit BECN1, an essential mediator of autophagy. Bcl-B is an anti-apoptotic member of the Bcl-2 family that possesses the four BH (Bcl-2 homology) domains (BH1, BH2, BH3 and BH4) and a predicted C-terminal trans-membrane domain. Although the anti-apoptotic properties of Bcl-B are well characterized, its physiological function remains to be established. In the present study, we first established that Bcl-B interacts with the BH3 domain of BECN1. We also showed that Bcl-B overexpression reduces autophagy triggered by a variety of pro-autophagic stimuli. This impairment of autophagy was closely related to the capacity of Bcl-B to bind to BECN1. Importantly, we have demonstrated that Bcl-B knockdown triggers autophagic cell death and sensitizes cells to amino acid starvation. The cell death induced by Bcl-B knockdown was partially dependent on components of the autophagy machinery (LC3; BECN1; ATG5). These findings reveal a new role of Bcl-B in the regulation of autophagy." @default.
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- W2067149213 date "2012-04-01" @default.
- W2067149213 modified "2023-10-18" @default.
- W2067149213 title "The anti-apoptotic Bcl-B protein inhibits BECN1-dependent autophagic cell death" @default.
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- W2067149213 doi "https://doi.org/10.4161/auto.19084" @default.
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