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Altered PPARgamma expression inhibits myogenic differentiation in C2C12 skeletal muscle cells

Jaskirat Singh1, Navin Kumar Verma, Sejal M Kansagra

  • 1Signal Transduction Research Laboratory, Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), SAS Nagar, Punjab, India.

Molecular and Cellular Biochemistry
|July 14, 2006
PubMed

Insights

Peroxisome proliferator-activated receptor gamma (PPARgamma) is crucial for skeletal muscle cell differentiation. Altering PPARgamma expression in C2C12 cells inhibited myotube formation and key muscle protein expression.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • Peroxisome proliferator-activated receptor gamma (PPARgamma) is a nuclear receptor superfamily member.
  • PPARgamma is known to regulate adipocyte differentiation.
  • The role of PPARgamma in skeletal muscle differentiation remains unexplored.

Purpose of the Study:

  • To investigate the potential involvement of PPARgamma in skeletal muscle differentiation.
  • To elucidate the function of PPARgamma in myogenic processes.

Main Methods:

  • Modulation of PPARgamma expression in C2C12 mouse skeletal muscle cells.
  • Stable transfection with sense or antisense PPARgamma cDNA constructs.
  • Phenotypic observation and biochemical analysis of myogenic markers.

Main Results:

  • Altered PPARgamma expression significantly inhibited myotube formation in C2C12 cells.
  • Expression of muscle-specific proteins (myogenin, MyoD) and creatine kinase activity were reduced.
  • PPARgamma plays a critical role in regulating skeletal muscle cell differentiation.

Conclusions:

  • PPARgamma is essential for proper skeletal muscle cell differentiation.
  • PPARgamma's role extends beyond adipogenesis to include myogenesis.
  • Targeting PPARgamma may offer therapeutic avenues for muscle-related disorders.

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