ER-Phagy, ER Homeostasis, and ER Quality Control: Implications for Disease

Susan Ferro-Novick*, Fulvio Reggiori*, Jeffrey L Brodsky*

*Corresponding author for this work

Research output: Contribution to journalReview articleAcademicpeer-review

6 Citations (Scopus)
70 Downloads (Pure)

Abstract

Lysosomal degradation of endoplasmic reticulum (ER) fragments by autophagy, termed ER-phagy or reticulophagy, occurs under normal as well as stress conditions. The recent discovery of multiple ER-phagy receptors has stimulated studies on the roles of ER-phagy. We discuss how the ER-phagy receptors and the cellular components that work with these receptors mediate two important functions: ER homeostasis and ER quality control. We highlight that ER-phagy plays an important role in alleviating ER expansion induced by ER stress, and acts as an alternative disposal pathway for misfolded proteins. We suggest that the latter function explains the emerging connection between ER-phagy and disease. Additional ER-phagy-associated functions and important unanswered questions are also discussed.

Original languageEnglish
Pages (from-to)630-639
Number of pages10
JournalTrends in Biochemical Sciences
Volume46
Issue number8
Early online date25-Jan-2021
DOIs
Publication statusPublished - Aug-2021

Keywords

  • ENDOPLASMIC-RETICULUM TURNOVER
  • AUTOPHAGY RECEPTOR
  • PROTEIN
  • MUTATIONS
  • LUNAPARK
  • FAM134B
  • TEX264
  • ACTS

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