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The Mohawk homeobox gene is a critical regulator of tendon differentiation.


ABSTRACT: Mohawk (Mkx) is a member of the Three Amino acid Loop Extension superclass of atypical homeobox genes that is expressed in developing tendons. To investigate the in vivo functions of Mkx, we generated Mkx(-/-) mice. These mice had hypoplastic tendons throughout the body. Despite the reduction in tendon mass, the cell number in tail tendon fiber bundles was similar between wild-type and Mkx(-/-) mice. We also observed small collagen fibril diameters and a down-regulation of type I collagen in Mkx(-/-) tendons. These data indicate that Mkx plays a critical role in tendon differentiation by regulating type I collagen production in tendon cells.

SUBMITTER: Ito Y 

PROVIDER: S-EPMC2890854 | biostudies-other | 2010 Jun

REPOSITORIES: biostudies-other

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The Mohawk homeobox gene is a critical regulator of tendon differentiation.

Ito Yoshiaki Y   Toriuchi Naoya N   Yoshitaka Teruhito T   Ueno-Kudoh Hiroe H   Sato Tempei T   Yokoyama Shigetoshi S   Nishida Keiichiro K   Akimoto Takayuki T   Takahashi Michiko M   Miyaki Shigeru S   Asahara Hiroshi H  

Proceedings of the National Academy of Sciences of the United States of America 20100524 23


Mohawk (Mkx) is a member of the Three Amino acid Loop Extension superclass of atypical homeobox genes that is expressed in developing tendons. To investigate the in vivo functions of Mkx, we generated Mkx(-/-) mice. These mice had hypoplastic tendons throughout the body. Despite the reduction in tendon mass, the cell number in tail tendon fiber bundles was similar between wild-type and Mkx(-/-) mice. We also observed small collagen fibril diameters and a down-regulation of type I collagen in Mkx  ...[more]

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