Cell
Volume 75, Issue 7, 31 December 1993, Pages 1351-1359
Journal home page for Cell

Article
MyoD or Myf-5 is required for the formation of skeletal muscle

https://doi.org/10.1016/0092-8674(93)90621-VGet rights and content

Abstract

Mice carrying null mutations in the myogenic regulatory factors Myf-5 or MyoD have apparently normal skeletal muscle. To address whether these two factors functionally substitute for one another in myogenesis, mice carrying mutant Myf-5 and MyoD genes were interbred. While mice lacking both MyoD and Myf-5 were born alive, they were immobile and died soon after birth. Northern blot and S1 nuclease analyses indicated that Myf-5(-/-);MyoD(-/-) mice expressed no detectable skeletal muscle-specific mRNAs. Histological examination of these mice revealed a complete absence of skeletal muscle. Immunohistochemical analysis indicated an absence of desmin-expressing myoblast-like cells. These observations suggest that either Myf-5 or MyoD is required for the determination of skeletal myoblasts, their propagation, or both during embryonic development and indicate that these factors play, at least in part, functionally redundant roles in myogenesis.

References (31)

  • C.N. Adra et al.

    The family of mouse phosphoglycerate kinase gene and pseudogenes

    Somat. Cell Mol. Genet.

    (1988)
  • C. Auffray et al.

    Purification of mouse immunoglobulin heavy-chain messenger RNAs from total myeloma tumor RNA

    Eur. J. Biochem.

    (1980)
  • J.D. Bancroft et al.

    Theory and Practice of Histological Techniques

    (1990)
  • E. Bober et al.

    The muscle regulatory gene Myf-6 has a biphasic pattern of expression during early mouse development

    J. Cell Biol.

    (1991)
  • T.G. Braun et al.

    Differential expression of myogenic determination genes in muscle cells: possible autoactivation by the Myf gene products

    EMBO J.

    (1989)
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