Cited by 148Autophagy in Disease and TherapyCellular transport and secretionCalcium signaling and nucleotide metabolism

NRBF2 regulates autophagy and prevents liver injury by modulating Atg14L-linked phosphatidylinositol-3 kinase III activity

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Lu, Jiahong, He, Liqiang, Behrends, Christian, Araki, Masatake, Araki, Kimi, Jun Wang, Qing, Catanzaro, Joseph M., Friedman, Scott L. +4 more·2014·Nature Communications

Abstract

The Beclin 1-Vps34 complex, the core component of the class III phosphatidylinositol-3 kinase (PI3K-III), binds Atg14L or UVRAG to control different steps of autophagy. However, the mechanism underlying the control of PI3K-III activity remains elusive. Here we report the identification of NRBF2 as a component in the specific PI3K-III complex and a modulator of PI3K-III activity. Through its microtubule interaction and trafficking (MIT) domain, NRBF2 binds Atg14L directly and enhances Atg14L-linked Vps34 kinase activity and autophagy induction. NRBF2-deficient cells exhibit enhanced vulnerability to endoplasmic reticulum (ER) stress that is reversed by re-introducing exogenous NRBF2. NRBF2-deficient mice develop focal liver necrosis and ductular reaction, accompanied by impaired Atg14L-linked Vps34 activity and autophagy, although the mice show no increased mortality. Our data reveal a key role for NRBF2 in the assembly of the specific Atg14L-Beclin 1-Vps34-Vps15 complex for autophagy induction. Thus, NRBF2 modulates autophagy via regulation of PI3K-III and prevents ER stress-mediated cytotoxicity and liver injury.

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Authors
Lu, J., He, L., Behrends, C., Araki, M., Araki, K., Jun Wang, Q., Catanzaro, J. M., Friedman, S. L., Zong, W.-X., Fiel, M. I., Li, M., & Yue, Z.
Affiliations
  • Hong Kong Baptist University (HK)
  • Icahn School of Medicine at Mount Sinai (US)
  • Goethe University Frankfurt (DE)
  • Institute of Resource Development and Analysis, Kumamoto University (JP)
  • Stony Brook University (US)
Corresponding author
Yue, Zhenyu
Venue
Nature Communications
Published
2014-05-22
Volume
5
Issue
1
Pages
3920-3920
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2000723562
Cited by
148
References
34
Citations by year
2026: 8 · 2025: 12 · 2024: 6 · 2023: 11 · 2022: 17 · 2021: 21 · 2020: 18 · 2019: 11 · 2018: 11 · 2017: 8 · 2016: 16 · 2015: 7 · 2014: 2
FWCI
8.31
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • HKBU Institutional Repository (Hong Kong Baptist University) (submittedVersion)
  • UKnowledge (University of Kentucky) (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • McKnight Foundation
  • University of Southern California
  • Universitetet i Tromsø
  • Central South University
  • National Institutes of Health
  • Japan Society for the Promotion of Science (25640052)
  • National Institute on Alcohol Abuse and Alcoholism (R01AA020709)
  • National Cancer Institute (R01CA129536)
  • National Institute of General Medical Sciences (R01GM097355)
  • National Institute of Neurological Disorders and Stroke (NIH-R01NS060123, R01NS060123)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Calcium signaling and nucleotide metabolism
Keywords
autophagy, ATG14L, Vps34, Beclin-1, VPS15, endoplasmic reticulum stress, liver injury, necrosis, autophagosome formation
MeSH terms
Autophagy-Related Proteins, Beclin-1, Animals, Autophagy, Dimethyl Sulfoxide, Liver, Models, Biological, Necrosis, Phagosomes, Protein Binding, Transcription Factors, Blotting, Western, Trans-Activators, Protein Structure, Tertiary, Mice, Knockout, Thapsigargin, Vesicular Transport Proteins, Apoptosis Regulatory Proteins, NF-E2-Related Factor 2, Protein Stability, Gene Knockdown Techniques, Class III Phosphatidylinositol 3-Kinases, Proteolysis, Endoplasmic Reticulum Stress

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