{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T05:04:25Z","timestamp":1772168665359,"version":"3.50.1"},"reference-count":55,"publisher":"The Company of Biologists","license":[{"start":{"date-parts":[[2014,6,15]],"date-time":"2014-06-15T00:00:00Z","timestamp":1402790400000},"content-version":"vor","delay-in-days":530,"URL":"http:\/\/www.biologists.com\/user-licence-1-1"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>TAK1 is a MAP3K that mediates non-canonical TGF-\u03b2 and BMP signaling. During the embryonic period, TAK1 is essential for cartilage and joint development as deletion of Tak1 in chondro-osteo progenitor cells leads to severe chondrodysplasia with defects in both chondrocyte proliferation and maturation. Here, we designed experiments to address the role of TAK1 in committed chondrocytes during early postnatal development. Using the Col2a1-CreERT2; Tak1f\/f mouse model, we induced deletion of Tak1 at postnatal day 7 and characterized the skeletal phenotypes of these mice at one and three months of age. Mice with chondrocyte-specific Tak1 deletion exhibited severe growth retardation and reduced proteoglycan and Type II Collagen content in the extracellular matrix of the articular cartilage. We found reduced Col2a1 and Acan expression, but increased Mmp13 and Adamts5 expression, in Tak1-deficient chondrocytes along with reduced expression of the SOX trio of transcription factors, SOX9, SOX5 and SOX6. In vitro, BMP2 stimulated Sox9 gene expression and Sox9 promoter activity, which did not occur after Tak1 deletion or in the presence of a TAK1 kinase inhibitor. TAK1 affects both canonical and non-canonical BMP signal transduction and we found that both of these pathways contributed to BMP2-mediated Sox9 promoter activation. Additionally, we found that ATF2 directly binds the Sox9 promoter in response to BMP signaling and that this effect is dependent upon TAK1 kinase activity. These novel findings establish that TAK1 is essential for BMP2-mediated Sox9 gene expression and the postnatal development of normal growth plate and articular cartilages.<\/jats:p>","DOI":"10.1242\/jcs.135483","type":"journal-article","created":{"date-parts":[[2013,10,21]],"date-time":"2013-10-21T20:58:59Z","timestamp":1382389139000},"source":"Crossref","is-referenced-by-count":24,"title":["TAK1 regulates SOX9 expression in chondrocytes and is essential for postnatal development of the growth plate and articular cartilages"],"prefix":"10.1242","author":[{"given":"Lin","family":"Gao","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tzong-jen","family":"Sheu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yufeng","family":"Dong","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Donna M","family":"Hoak","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael J","family":"Zuscik","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Edward M","family":"Schwarz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matthew J","family":"Hilton","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Regis J","family":"O'Keefe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jennifer H","family":"Jonason","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"237","published-online":{"date-parts":[[2013,1,1]]},"reference":[{"key":"2021042613170143400_b1","doi-asserted-by":"publisher","first-page":"390","DOI":"10.1007\/s00774-011-0273-9","article-title":"Unraveling the transcriptional regulatory machinery in chondrogenesis.","volume":"29","author":"Akiyama","year":"2011","journal-title":"J. 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