Key Regulators of Autophagosome Closure

Wenyan Jiang; Xuechai Chen; Cuicui Ji; Wenting Zhang; Jianing Song; Jie Li; Juan Wang

doi:10.3390/cells10112814

Cells (Oct 2021)

Key Regulators of Autophagosome Closure

Wenyan Jiang,
Xuechai Chen,
Cuicui Ji,
Wenting Zhang,
Jianing Song,
Jie Li,
Juan Wang

Affiliations

Wenyan Jiang: Center of Excellence for Environmental Safety and Biological Effects, Faculty of Environment and Life Sciences, Beijing International Science and Technology Cooperation Base for Antiviral Drugs, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China
Xuechai Chen: Center of Excellence for Environmental Safety and Biological Effects, Faculty of Environment and Life Sciences, Beijing International Science and Technology Cooperation Base for Antiviral Drugs, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China
Cuicui Ji: Center of Excellence for Environmental Safety and Biological Effects, Faculty of Environment and Life Sciences, Beijing International Science and Technology Cooperation Base for Antiviral Drugs, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China
Wenting Zhang: Center of Excellence for Environmental Safety and Biological Effects, Faculty of Environment and Life Sciences, Beijing International Science and Technology Cooperation Base for Antiviral Drugs, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China
Jianing Song: Center of Excellence for Environmental Safety and Biological Effects, Faculty of Environment and Life Sciences, Beijing International Science and Technology Cooperation Base for Antiviral Drugs, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China
Jie Li: Laboratory for Marine Fisheries and Aquaculture, Qingdao National Laboratory for Marine Science and Technology, Key Laboratory of Maricultural Organism Disease Control, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
Juan Wang: Center of Excellence for Environmental Safety and Biological Effects, Faculty of Environment and Life Sciences, Beijing International Science and Technology Cooperation Base for Antiviral Drugs, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China

DOI: https://doi.org/10.3390/cells10112814
Journal volume & issue: Vol. 10, no. 11
p. 2814

Abstract

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Autophagy is an evolutionarily conserved pathway, in which cytoplasmic components are sequestered within double-membrane vesicles called autophagosomes and then transported into lysosomes or vacuoles for degradation. Over 40 conserved autophagy-related (ATG) genes define the core machinery for the five processes of autophagy: initiation, nucleation, elongation, closure, and fusion. In this review, we focus on one of the least well-characterized events in autophagy, namely the closure of the isolation membrane/phagophore to form the sealed autophagosome. This process is tightly regulated by ESCRT machinery, ATG proteins, Rab GTPase and Rab-related proteins, SNAREs, sphingomyelin, and calcium. We summarize recent progress in the regulation of autophagosome closure and discuss the key questions remaining to be addressed.

Published in Cells

ISSN: 2073-4409 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Biology (General): Cytology
Website: https://www.mdpi.com/journal/cells

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