Lipid utilization in skeletal muscle cells is modulated in vitro and in vivo by specific miRNAs

Francesco Chemello, Francesca Grespi, Alessandra Zulian, Pasqua Cancellara, Etienne Hebert-Chatelain, Paolo Martini, Camilla Bean, Enrico Alessio, Ruggero Ferrazza, Paolo Laveder, Graziano Guella, Carlo Reggiani, Chiara Romualdi, Paolo Bernardi, Luca Scorrano, Stefano Cagnin, Gerolamo Lanfranchi

Research output: Contribution to journalArticlepeer-review

Abstract

Skeletal muscle is composed by different myofiber types that can preferentially use glycolysis or lipids for ATP production. How fuel preference is specified in these post-mitotic cells is unknown. Here we show that miRNAs are important players in defining the myofiber metabolic profile. mRNA and miRNA signatures of all myofiber types obtained at single cell level unveiled fiber-specific regulatory networks and identified two master miRNAs that coordinately control myofiber fuel preference and mitochondrial morphology. Our work provides a complete and integrated myofiber type-specific catalogue of genes and miRNAs expressed and establishes miR-27a-3p and miR-142-3p as key regulators of lipid utilization in skeletal muscle.

Original languageEnglish (US)
JournalUnknown Journal
DOIs
StatePublished - Mar 23 2018
Externally publishedYes

Keywords

  • Lipids
  • MiRNAs
  • Mitochondria
  • Single myofiber
  • Skeletal muscle metabolism

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • Immunology and Microbiology(all)
  • Neuroscience(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

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