RRC ID 57294
Author Dasari SK, Schejter E, Bialik S, Shkedy A, Levin-Salomon V, Levin-Zaidman S, Kimchi A.
Title Death by over-eating: The Gaucher disease associated gene GBA1, identified in a screen for mediators of autophagic cell death, is necessary for developmental cell death in Drosophila midgut.
Journal Cell Cycle
Abstract Autophagy is critical for homeostasis and cell survival during stress, but can also lead to cell death, a little understood process that has been shown to contribute to developmental cell death in lower model organisms, and to human cancer cell death. We recently reported 1 on our thorough molecular and morphologic characterization of an autophagic cell death system involving resveratrol treatment of lung carcinoma cells. To gain mechanistic insight into this death program, we performed a signalome-wide RNAi screen for genes whose functions are necessary for resveratrol-induced death. The screen identified GBA1, the gene encoding the lysosomal enzyme glucocerebrosidase, as an important mediator of autophagic cell death. Here we further show the physiological relevance of GBA1 to developmental cell death in midgut regression during Drosophila metamorphosis. We observed a delay in midgut cell death in two independent Gba1a RNAi lines, indicating the critical importance of Gba1a for midgut development. Interestingly, loss-of-function GBA1 mutations lead to Gaucher Disease and are a significant risk factor for Parkinson Disease, which have been associated with defective autophagy. Thus GBA1 is a conserved element critical for maintaining proper levels of autophagy, with high levels leading to autophagic cell death.
Volume 16(21)
Pages 2003-2010
Published 2017-10-9
DOI 10.1080/15384101.2017.1380134
PMID 28933588
PMC PMC5731414
MeSH Animals Autophagy / physiology* Drosophila / metabolism Gaucher Disease / metabolism* Glucosylceramidase / metabolism* Humans Lysosomes / metabolism* Lysosomes / ultrastructure Parkinson Disease / genetics
IF 3.259
Times Cited 4
Drosophila DGRC#112001