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Nat Commun. 2016 Jun 9;7:11803. doi: 10.1038/ncomms11803.

The Parkinson's disease-associated genes ATP13A2 and SYT11 regulate autophagy via a common pathway.

Author information

1
Department of Medical Genetics, Cambridge Institute for Medical Research (CIMR), Wellcome/MRC Building, Cambridge Biomedical Campus, Hills Road, Cambridge CB2 0XY, UK.

Abstract

Forms of Parkinson's disease (PD) are associated with lysosomal and autophagic dysfunction. ATP13A2, which is mutated in some types of early-onset Parkinsonism, has been suggested as a regulator of the autophagy-lysosome pathway. However, little is known about the ATP13A2 effectors and how they regulate this pathway. Here we show that ATP13A2 depletion negatively regulates another PD-associated gene (SYT11) at both transcriptional and post-translational levels. Decreased SYT11 transcription is controlled by a mechanism dependent on MYCBP2-induced ubiquitination of TSC2, which leads to mTORC1 activation and decreased TFEB-mediated transcription of SYT11, while increased protein turnover is regulated by SYT11 ubiquitination and degradation. Both mechanisms account for a decrease in the levels of SYT11, which, in turn, induces lysosomal dysfunction and impaired degradation of autophagosomes. Thus, we propose that ATP13A2 and SYT11 form a new functional network in the regulation of the autophagy-lysosome pathway, which is likely to contribute to forms of PD-associated neurodegeneration.

PMID:
27278822
PMCID:
PMC4906231
DOI:
10.1038/ncomms11803
[Indexed for MEDLINE]
Free PMC Article

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