Angiogenin and Osteoprotegerin are type II muscle specific myokines protecting pancreatic beta-cells against proinflammatory cytokines

Sci Rep. 2018 Jul 3;8(1):10072. doi: 10.1038/s41598-018-28117-2.

Abstract

Tissue cross-talk is emerging as a determinant way to coordinate the different organs implicated in glucose homeostasis. Among the inter-organ communication factors, muscle-secreted myokines can modulate the function and survival of pancreatic beta-cells. Using primary human myotubes from soleus, vastus lateralis and triceps brachii muscles, we report here that the impact of myokines on beta-cells depends on fiber types and their metabolic status. We show that Type I and type II primary myotubes present specific mRNA and myokine signatures as well as a different sensitivity to TNF-alpha induced insulin resistance. Finally, we show that angiogenin and osteoprotegerin are triceps specific myokines with beta-cell protective actions against proinflammatory cytokines. These results suggest that type I and type II muscles could impact insulin secretion and beta-cell mass differentially in type 2 diabetes through specific myokines secretion.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cytokines / metabolism
  • Diabetes Mellitus, Type 2 / metabolism
  • Homeostasis
  • Humans
  • Inflammation
  • Insulin Resistance / physiology
  • Insulin-Secreting Cells / immunology
  • Insulin-Secreting Cells / metabolism
  • Muscle Cells / metabolism*
  • Muscle Cells / physiology
  • Muscle Fibers, Skeletal / metabolism
  • Muscle, Skeletal / metabolism
  • Osteoprotegerin / metabolism*
  • Primary Cell Culture / methods
  • Ribonuclease, Pancreatic / metabolism*
  • Tumor Necrosis Factor-alpha / metabolism

Substances

  • Cytokines
  • Osteoprotegerin
  • Tumor Necrosis Factor-alpha
  • angiogenin
  • Ribonuclease, Pancreatic