Journal
CURRENT OPINION IN PHYSIOLOGY
Volume 29, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cophys.2022.100595
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Funding
- National Institutes of Health (NIH) [CA201849, CA126792, CA213775, AG057462]
- Samuel Waxman Cancer Research Foundation
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This review discusses the noncanonical functions of the autophagy machinery in promoting secretory autophagy, as well as the regulation of secretory autophagy under various cellular stresses.
Autophagy is a highly conserved and critical recycling and degradation pathway that involves the selective engulfment of cytoplasmic organelles and proteins into double-membrane vesicles termed autophagosomes that subsequently fuse with lysosomes for degradation. In addition to its established role in protein degradation, there is a growing body of evidence that in response to specific environmental cues, the autophagy machinery promotes unconventional secretion of leaderless proteins via diverse mechanisms, collectively termed 'secretory autophagy'. In this review, we describe recent findings highlighting these noncanonical functions of the autophagy machinery in specifying vesicular cargo loading for secretion and discuss how secretory autophagy is regulated during a wide range of cellular stresses, including inflammation, starvation, and lysosomal damage.
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