The Mohawk homeobox transcription factor regulates the differentiation of tendons and volar plates

Naoko Onizuka, Yoshiaki Ito, Masayo Inagawa, Hiroyuki Nakahara, Shuji Takada, Martin Lotz, Yoshiaki Toyama, Hiroshi Asahara

研究成果: Article査読

15 被引用数 (Scopus)

抄録

Background: Mohawk (Mkx) is a homeodomain-containing transcription factor that is expressed in various mesoderm-derived tissues, particularly in developing tendons. In this study, we investigate the exact expression pattern and functions of Mkx in forelimbs. Methods: We analyzed the forelimbs of Mkx knockout mice [from embryonic day (E) 18.5 to postnatal day (P) 28 weeks] by using knocked-in Venus signals, Masson trichrome staining, and hematoxylin and eosin (H&E) staining. Results: We detected Venus signals in forelimb tendons, pulleys, and volar plates (VPs) in P21 mice. In-depth histological analysis showed that compared to the wild-type mice, the Mkx knockout mice showed significant hypoplasia in the flexor digitorum profundus tendons from E18.5. The VPs and pulleys appeared normal until P0; however, by P14, they became increasingly thicker in Mkx-null mice compared to wild-type mice. The fiber alignment was particularly disrupted in VPs of Mkx-null mice. Conclusions: These results suggest that Mkx is an important regulator of the differentiation of VPs and pulleys, as well as of tendon differentiation.

本文言語English
ページ(範囲)172-180
ページ数9
ジャーナルJournal of Orthopaedic Science
19
1
DOI
出版ステータスPublished - 2014 1

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

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