Methylglyoxal and Advanced Glycation End products: Insight of the regulatory machinery affecting the myogenic program and of its modulation by natural compounds

Sci Rep. 2017 Jul 19;7(1):5916. doi: 10.1038/s41598-017-06067-5.

Abstract

Methylglyoxal (MG) is a reactive dicarbonyl intermediate and a precursor of advanced glycation end products (AGEs). The authors investigated the role played by AGEs in muscle myopathy and the amelioration of its effects by curcumin and gingerol. In addition to producing phenotypical changes, MG increased oxidative stress and reduced myotube formation in C2C12 cells. RAGE (receptor for AGEs) expression was up-regulated and MYOD and myogenin (MYOG) expressions were concomitantly down-regulated in MG-treated cells. Interestingly, AGE levels were higher in plasma (~32 fold) and muscle (~26 fold) of diabetic mice than in control mice. RAGE knock-down (RAGEkd) reduced the expressions of MYOD and MYOG and myotube formation in C2C12 cells. In silico studies of interactions between curcumin or gingerol and myostatin (MSTN; an inhibitor of myogenesis) and their observed affinities for activin receptor type IIB (ACVRIIB) suggested curcumin and gingerol reduce the interaction between MSTN and ACVRIIB. The findings of this study suggest enhanced AGE production and subsequent RAGE-AGE interaction obstruct the muscle development program, and that curcumin and gingerol attenuate the effect of AGEs on myoblasts.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Biological Products / pharmacology*
  • Catechols / pharmacology
  • Cell Differentiation / drug effects
  • Cell Line
  • Computer Simulation
  • Curcumin / pharmacology
  • Diabetes Mellitus, Experimental / metabolism
  • Diabetes Mellitus, Experimental / pathology
  • Fatty Alcohols / pharmacology
  • Gene Expression Regulation
  • Gene Knockdown Techniques
  • Glycation End Products, Advanced / metabolism*
  • Mice, Inbred C57BL
  • Muscle Development / drug effects*
  • Myostatin / pharmacology
  • Pyruvaldehyde / metabolism*
  • RNA, Messenger / genetics
  • RNA, Messenger / metabolism
  • Receptor for Advanced Glycation End Products / genetics
  • Receptor for Advanced Glycation End Products / metabolism

Substances

  • Biological Products
  • Catechols
  • Fatty Alcohols
  • Glycation End Products, Advanced
  • Myostatin
  • RNA, Messenger
  • Receptor for Advanced Glycation End Products
  • Pyruvaldehyde
  • gingerol
  • Curcumin