BCL2-CISD2: An ER complex at the nexus of autophagy and calcium homeostasis?
SourceAutophagy, 8, 5, (2012), pp. 856-857
Article / Letter to editor
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SubjectNCMLS 6: Genetics and epigenetic pathways of disease
CISD2, an ER BCL2-associated autophagy regulator also known as NAF-1, is responsible for the human degenerative disorder Wolfram Syndrome 2. In order to interrogate the physiological role of CISD2 we generated and characterized the Cisd2 gene deletion in mice. Cisd2 null mice manifest significant degeneration in skeletal muscle tissues, which is accompanied with augmented autophagy, dysregulated Ca ( 2+) homeostasis and elongated mitochondria. Our findings describe a novel role for BCL2-CISD2 in the homeostatic maintenance of skeletal muscle. It remains to be elucidated how and if the antagonism of the BECN1 autophagy-initiating complex and modulation of ER Ca ( 2+) homeostasis by BCL2-CISD2 are interconnected.
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