MicroRNA-1 facilitates skeletal myogenic differentiation without affecting osteoblastic and adipogenic differentiation

Norio Nakajima, Tomosaburo Takahashi, Ryoji Kitamura, Koji Isodono, Satoshi Asada, Tomomi Ueyama, Hiroaki Matsubara, Hidemasa Oh

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)


MicroRNAs (miRNAs) are small non-coding RNAs emerging as important post-transcriptional gene regulators. In this study, we examined the role of miR-1, an miRNA specifically expressed in cardiac and skeletal muscle tissue, on the myogenic, osteoblastic, and adipogenic differentiation of C2C12 cells. Upon induction of myogenic differentiation, miR-1 was robustly expressed. Retrovirus-mediated overexpression of miR-1 markedly enhanced expression of muscle creatine kinase, sarcomeric myosin, and α-actinin, while the effects on myogenin and MyoD expression were modest. Formation of myotubes was significantly augmented in miR-1-overexpressing cells, indicating miR-1 expression enhanced not only myogenic differentiation but also maturation into myotubes. In contrast, osteoblastic and adipogenic differentiation was not affected by forced expression of miR-1. Thus, the muscle-specific miRNA, miR-1, plays important roles in controlling myogenic differentiation and maturation in lineage-committed cells, rather than functioning in fate determination.

Original languageEnglish
Pages (from-to)1006-1012
Number of pages7
JournalBiochemical and Biophysical Research Communications
Issue number4
Publication statusPublished - Dec 1 2006
Externally publishedYes


  • Adipocytes
  • C2C12 cells
  • Differentiation
  • MicroRNA
  • Osteoblasts
  • Skeletal muscle cells

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology


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