Cited by 166Autophagy in Disease and TherapyMuscle Physiology and DisordersLipid metabolism and biosynthesis

Lipin-1 regulates autophagy clearance and intersects with statin drug effects in skeletal muscle

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Zhang, Peixiang, Verity, M. Anthony, Reue, Karen·2014·Cell Metabolism

Abstract

LPIN1 encodes lipin-1, a phosphatidic acid phosphatase (PAP) enzyme that catalyzes the dephosphorylation of phosphatidic acid to form diacylglycerol. Homozygous LPIN1 gene mutations cause severe rhabdomyolysis, and heterozygous LPIN1 missense mutations may promote statin-induced myopathy. We demonstrate that lipin-1-related myopathy in the mouse is associated with a blockade in autophagic flux and accumulation of aberrant mitochondria. Lipin-1 PAP activity is required for maturation of autolysosomes, through its activation of the protein kinase D (PKD)-Vps34 phosphatidylinositol 3-kinase signaling cascade. Statin treatment also reduces PKD activation and autophagic flux, which are compounded by diminished mammalian target of rapamycin (mTOR) abundance in lipin-1-haploinsufficent and -deficient muscle. Lipin-1 restoration in skeletal muscle prevents myonecrosis and statin toxicity in vivo, and activated PKD rescues autophagic flux in lipin-1-deficient cells. Our findings identify lipin-1 PAP activity as a component of the macroautophagy pathway and define the basis for lipin-1-related myopathies.

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Crossref · 10.1016/j.cmet.2014.05.003

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Authors
Zhang, P., Verity, M. A., & Reue, K.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Reue, Karen
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2014-08
Volume
20
Issue
2
Pages
267-279
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2052660293
Cited by
166
References
60
Citations by year
2026: 8 · 2025: 10 · 2024: 20 · 2023: 10 · 2022: 10 · 2021: 18 · 2020: 17 · 2019: 15 · 2018: 16 · 2017: 8 · 2016: 11 · 2015: 19 · 2014: 4
FWCI
10.58
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institutes of Health (P01 HL090553, P01 HL028481, P20RR16475)
  • National Science Foundation (0920663, MCB 0455318, DBI 0521587, EPS 0236913)
  • Kansas State University
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
Keywords
LPIN1, autophagy, statin-induced myopathy, skeletal muscle, phosphatidate phosphohydrolase, protein kinase D, mTOR, mitochondrial accumulation, muscle necrosis, rhabdomyolysis, macroautophagy, diacylglycerol
MeSH terms
Animals, Autophagy, Cell Line, Creatine Kinase, Female, Lipids, Mice, Inbred BALB C, Microtubule-Associated Proteins, Mitochondria, Nuclear Proteins, Phosphatidate Phosphatase, Protein Kinase C, Muscle, Skeletal, Hydroxymethylglutaryl-CoA Reductase Inhibitors, Mice, Haploinsufficiency, Class III Phosphatidylinositol 3-Kinases, TOR Serine-Threonine Kinases

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