Journal
AUTOPHAGY
Volume 10, Issue 7, Pages 1229-1240Publisher
LANDES BIOSCIENCE
DOI: 10.4161/auto.28777
Keywords
autophagy; ceramide; colon cancer cells; EMD; LEM-domain; phosphorylation; PRKACA
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Funding
- ARC
- University of Liege
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To date, precise roles of EMD (emerin) remain poorly described. In this paper, we investigated the role of EMD in the C16-ceramide autophagy pathway. Ceramides are bioactive signaling molecules acting notably in the regulation of cell growth, differentiation, or cell death. However, the mechanisms by which they mediate these pathways are not fully understood. We found that C16-ceramide induces EMD phosphorylation on its LEM domain through PRKACA. Upon ceramide treatment, phosphorylated EMD binds MAP1LC3B leading to an increase of autophagosome formation. These data suggest a new role of EMD as an enhancer of autophagosome formation in the C16-ceramide autophagy pathway in colon cancer cells.
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