Cited by 116Mitochondrial Function and PathologyAutophagy in Disease and TherapyAdipose Tissue and Metabolism

Muscle-generated BDNF (brain derived neurotrophic factor) maintains mitochondrial quality control in female mice

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Ahuja, Palak, Ng, Chun Fai, Pang, Brian Pak Shing, Chan, Wing Suen, Tse, Margaret Chui Ling, Bi, Xinyi, Kwan, Hiu-Lam Rachel, Brobst, Daniel +10 more·2022·Autophagy

Abstract

Mitochondrial remodeling is dysregulated in metabolic diseases but the underlying mechanism is not fully understood. We report here that BDNF (brain derived neurotrophic factor) provokes mitochondrial fission and clearance in skeletal muscle via the PRKAA/AMPK-PINK1-PRKN/Parkin and PRKAA-DNM1L/DRP1-MFF pathways. Depleting Bdnf expression in myotubes reduced fatty acid-induced mitofission and mitophagy, which was associated with mitochondrial elongation and impaired lipid handling. Muscle-specific bdnf knockout (MBKO) mice displayed defective mitofission and mitophagy, and accumulation of dysfunctional mitochondria in the muscle when they were fed with a high-fat diet (HFD). These animals also have exacerbated body weight gain, increased intramyocellular lipid deposition, reduced energy expenditure, poor metabolic flexibility, and more insulin resistance. In contrast, consuming a BDNF mimetic (7,8-dihydroxyflavone) increased mitochondrial content, and enhanced mitofission and mitophagy in the skeletal muscles. Hence, BDNF is an essential myokine to maintain mitochondrial quality and function, and its repression in obesity might contribute to impaired metabolism.Abbreviations: 7,8-DHF: 7,8-dihydroxyflavone; ACACA/ACC: acetyl Coenzyme A carboxylase alpha; ACAD: acyl-Coenzyme A dehydrogenase family; ACADVL: acyl-Coenzyme A dehydrogenase, very long chain; ACOT: acyl-CoA thioesterase; CAMKK2: calcium/calmodulin-dependent protein kinase kinase 2, beta; BDNF: brain derived neurotrophic factor; BNIP3: BCL2/adenovirus E1B interacting protein 3; BNIP3L/NIX: BCL2/adenovirus E1B interacting protein 3-like; CCL2/MCP-1: chemokine (C-C motif) ligand 2; CCL5: chemokine (C-C motif) ligand 5; CNS: central nervous system; CPT1B: carnitine palmitoyltransferase 1b, muscle; Cpt2: carnitine palmitoyltransferase 2; CREB: cAMP responsive element binding protein; DNM1L/DRP1: dynamin 1-like; E2: estrogen; EHHADH: enoyl-CoenzymeA hydratase/3-hydroxyacyl CoenzymeA dehydrogenase; ESR1/ER-alpha: estrogen receptor 1 (alpha); FA: fatty acid; FAO: fatty acid oxidation; FCCP: carbonyl cyanide-4-(trifluoromethoxy)phenylhydrazone; FFA: free fatty acids; FGF21: fibroblast growth factor 21; FUNDC1: FUN14 domain containing 1; HADHA: hydroxyacyl-CoA dehydrogenase trifunctional multienzyme complex subunit alpha; HFD: high-fat diet; iWAT: inguinal white adipose tissues; MAP1LC3A/LC3A: microtubule-associated protein 1 light chain 3 alpha; MBKO; muscle-specific bdnf knockout; IL6/IL-6: interleukin 6; MCEE: methylmalonyl CoA epimerase; MFF: mitochondrial fission factor; NTRK2/TRKB: neurotrophic tyrosine kinase, receptor, type 2; OPTN: optineurin; PA: palmitic acid; PARL: presenilin associated, rhomboid-like; PDH: pyruvate dehydrogenase; PINK1: PTEN induced putative kinase 1; PPARGC1A/PGC-1α: peroxisome proliferative activated receptor, gamma, coactivator 1 alpha; PRKAA/AMPK: protein kinase, AMP-activated, alpha 2 catalytic subunit; ROS: reactive oxygen species; TBK1: TANK-binding kinase 1; TG: triacylglycerides; TNF/TNFα: tumor necrosis factor; TOMM20: translocase of outer mitochondrial membrane 20; ULK1: unc-51 like kinase 1

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  1. Ramesh M, Campos JC, Lee P, et al. Mitophagy protects against statin-mediated skeletal muscle toxicity. FASEB J. 2019;33 (11):11857-11869.

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Authors
Ahuja, P., Ng, C. F., Pang, B. P. S., Chan, W. S., Tse, M. C. L., Bi, X., Kwan, H.-L. R., Brobst, D., Herlea-Pana, O., Yang, X., Du, G., Saengnipanthkul, S., Noh, H. L., Jiao, B., Kim, J. K., Lee, C. W., Ye, K., & Chan, C. B.
Affiliations
  • University of Hong Kong (HK)
  • University of Oklahoma Health Sciences Center (US)
  • Department of Physiology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
  • Chinese Academy of Medical Sciences & Peking Union Medical College (CN)
  • University of Massachusetts Chan Medical School (US)
  • Kunming Institute of Zoology (CN)
  • Emory University (US)
Corresponding author
Chan, Chi Bun
Venue
Autophagy
Published
2021-10-25
Volume
18
Issue
6
Pages
1367-1384
ISSN
  • 1554-8627 (ISSN-L)
  • 1554-8635
OpenAlex
W3208384640
Cited by
116
References
81
Citations by year
2026: 25 · 2025: 34 · 2024: 30 · 2023: 15 · 2022: 10 · 2021: 2
FWCI
4.47
Type
journal article
Language
en
Open access
Locations
  • Autophagy (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Hong Kong Government Research Grant Council to CBC (GRF17113817)
  • Hong Kong Medical Research Fund (HMRF6171836)
  • CAMS Initiative for Innovative Medicine (CAMS-I2M 2016-I2M-3007)
  • National Major Science and Technology Projects of China (2018ZX09711001012, 2018ZX09711001003-005)
  • NIH grant (5U2C-DK093000)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
brain-derived neurotrophic factor, mitochondrial quality control, mitophagy, mitochondrial fission, skeletal muscle, myokines, AMPK, PINK1, Parkin, Drp1, high-fat diet, obesity, insulin resistance, 7,8-dihydroxyflavone, lipid metabolism, energy expenditure, metabolic flexibility
MeSH terms
Animals, Autophagy, Fatty Acids, Female, Mitochondria, Muscle, Muscle, Skeletal, Brain-Derived Neurotrophic Factor, Mice, AMP-Activated Protein Kinases

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