Autophagy is a lysosome-mediated degradation process that involves the formation of an enclosed double-membrane autophagosome. Yeast genetic screens have laid the groundwork for a molecular understanding of autophagy. The process, however, exhibits fundamental differences between yeast and higher eukaryotes. Very little is known about essential autophagy components specific to higher eukaryotes. Recent studies have shown that a variety of protein aggregates are selectively removed by autophagy (a process termed aggrephagy) during Caenorhabditis elegans embryogenesis, establishing C. elegans as a multicellular genetic model to delineate the autophagic machinery. The genetic screens were carried out in C. elegans to identify essential autophagy genes. In addition to conserved and divergent homologues of yeast Atg proteins, several autophagy genes conserved in higher eukaryotes, but absent from yeast, were isolated. The genetic hierarchy of autophagy genes in the degradation of protein aggregates in C. elegans provides a framework for understanding the concerted action of autophagy genes in the aggrephagy pathway.
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Review Article|
May 31 2013
Aggrephagy: lessons from C. elegans
Qun Lu;
Qun Lu
1
1State Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, P.R. China
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Fan Wu;
Fan Wu
1State Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, P.R. China
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Hong Zhang
Hong Zhang
2
1State Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, P.R. China
2To whom correspondence should be addressed (email hongzhang@sun5.ibp.ac.cn).
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Publisher: Portland Press Ltd
Received:
November 15 2012
Revision Received:
February 25 2013
Accepted:
March 06 2013
Online ISSN: 1470-8728
Print ISSN: 0264-6021
© The Authors Journal compilation © 2013 Biochemical Society
2013
Biochem J (2013) 452 (3): 381–390.
Article history
Received:
November 15 2012
Revision Received:
February 25 2013
Accepted:
March 06 2013
Citation
Qun Lu, Fan Wu, Hong Zhang; Aggrephagy: lessons from C. elegans. Biochem J 15 June 2013; 452 (3): 381–390. doi: https://doi.org/10.1042/BJ20121721
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