Title : Regulation of mTORC1 by lysosomal calcium and calmodulin.

Pub. Date : 2016 Oct 27

PMID : 27787197






6 Functional Relationships(s)
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1 Blockade of lysosomal calcium release due to lysosomal lipid accumulation has been shown to inhibit mTORC1 signaling. Calcium CREB regulated transcription coactivator 1 Mus musculus
2 However, the mechanism by which lysosomal calcium regulates mTORC1 has remained undefined. Calcium CREB regulated transcription coactivator 1 Mus musculus
3 Herein we report that proper lysosomal calcium release through the calcium channel TRPML1 is required for mTORC1 activation. Calcium CREB regulated transcription coactivator 1 Mus musculus
4 Lysosomal calcium activates mTORC1 by inducing association of calmodulin (CaM) with mTOR. Calcium CREB regulated transcription coactivator 1 Mus musculus
5 Moreover, CaM is capable of stimulating the kinase activity of mTORC1 in a calcium-dependent manner in vitro. Calcium CREB regulated transcription coactivator 1 Mus musculus
6 These results reveal that mTOR is a new type of CaM-dependent kinase, and TRPML1, lysosomal calcium and CaM play essential regulatory roles in the mTORC1 signaling pathway. Calcium CREB regulated transcription coactivator 1 Mus musculus