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Cited by 285

The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.

Early endosomes and endosomal coatomer are required for autophagy

Open access
Razi, Minoo, Chan, Edmond Y.W., Tooze, Sharon A.·2009·Journal of Cell Biology

Abstract

Autophagy, an intracellular degradative pathway, maintains cell homeostasis under normal and stress conditions. Nascent double-membrane autophagosomes sequester and enclose cytosolic components and organelles, and subsequently fuse with the endosomal pathway allowing content degradation. Autophagy requires fusion of autophagosomes with late endosomes, but it is not known if fusion with early endosomes is essential. We show that fusion of AVs with functional early endosomes is required for autophagy. Inhibition of early endosome function by loss of COPI subunits (β′, β, or α) results in accumulation of autophagosomes, but not an increased autophagic flux. COPI is required for ER-Golgi transport and early endosome maturation. Although loss of COPI results in the fragmentation of the Golgi, this does not induce the formation of autophagosomes. Loss of COPI causes defects in early endosome function, as both transferrin recycling and EGF internalization and degradation are impaired, and this loss of function causes an inhibition of autophagy, an accumulation of p62/SQSTM-1, and ubiquitinated proteins in autophagosomes.

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Metadata

Authors
Razi, M., Chan, E. Y. W., & Tooze, S. A.
Venue
Journal of Cell Biology
Published
2009-04-13
Volume
185
Issue
2
Pages
305-321
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2112323649
Cited by
285
References
47
FWCI
16.04
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Early endosomes and endosomal coatomer are required for autophagy. https://app.cochat.ai/papers/10.1083/jcb.200810098
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Razi, M., Chan, E. Y. W., & Tooze, S. A. (2009). Early endosomes and endosomal coatomer are required for autophagy. Journal of Cell Biology. https://doi.org/10.1083/jcb.200810098

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