Time-coordinated prevalence of extracellular HGF, FGF2 and TGF-β3 in crush-injured skeletal muscle

Mai Khoi Q. Do, Takahiro Suzuki, Borjigin Gerelt, Yusuke Sato, Wataru Mizunoya, Mako Nakamura, Yoshihide Ikeuchi, Judy E. Anderson, Ryuichi Tatsumi

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Successful regeneration and remodeling of neuromuscular junctions are critical for restoring functional capacities and properties of skeletal muscle after damage, and axon-guidance molecules may be involved in the signaling that regulates such restoration. Recently, we found that early-differentiated satellite cells up-regulate a secreted neural chemorepellent Sema3A upon in vivo muscle-crush injury. The study also revealed that Sema3A expression is up-regulated in primary satellite-cell cultures in response to hepatocyte growth factor (HGF) and basic fibroblast growth factor (FGF2) and is prevented by transforming growth factor (TGF)-β2, 3. In order to verify the physiological significance of this regulation in vitro, the present study was designed to estimate the time-course of extracellular HGF, FGF2 and TGF-β3 concentrations after crush-injury of Gastrocnemius muscle in the rat lower hind-limb, using a combination of a non-homogenization/non-spin extraction of extracellular wound fluids and enhanced chemiluminescence-Western blotting analyses. Results clearly demonstrated that active HGF and FGF2 are prevalent in 2-8days post-crush, whereas active TGF-β3 increases after 12days, providing a better understanding of the time-coordinated levels of HGF, FGF2 and TGF-β3 that drive regulation of Sema3A expression during regenerative intramuscular moto-neuritogenesis.

Original languageEnglish
Pages (from-to)712-717
Number of pages6
JournalAnimal Science Journal
Volume83
Issue number10
DOIs
Publication statusPublished - Oct 2012

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences(all)

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