Chloroquine treatment induces secretion of autophagy-related proteins and inclusion of Atg8-family proteins in distinct extracellular vesicle populationsJing Xu, Kevin C Yang, Nancy Erro Go, Shane Colborne, Cally J Ho, Elham Hosseini-Beheshti, Alf H Lystad, Anne Simonsen, Emma Tomlinson Guns, Gregg B Morin & Sharon M Gorski
Chloroquine (CQ), a lysosomotropic agent, is commonly used to inhibit lysosomal degradation and macroautophagy/autophagy. Here we investigated the cell-extrinsic effects of CQ on secretion. We showed that lysosomal and autophagy inhibition by CQ altered the secretome, and induced the release of Atg8 orthologs and autophagy receptors. Atg8-family proteins, in particular, were secreted inside small extracellular vesicles (sEVs) in a lipidation-dependent manner. CQ treatment enhanced the release of Atg8-family proteins inside sEVs. Using full-length ATG16L1 and...
1 citation reported since publication in 2022.
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