RRC ID 21537
著者 Nishimura R, Wakabayashi M, Hata K, Matsubara T, Honma S, Wakisaka S, Kiyonari H, Shioi G, Yamaguchi A, Tsumaki N, Akiyama H, Yoneda T.
タイトル Osterix regulates calcification and degradation of chondrogenic matrices through matrix metalloproteinase 13 (MMP13) expression in association with transcription factor Runx2 during endochondral ossification.
ジャーナル J Biol Chem
Abstract Endochondral ossification is temporally and spatially regulated by several critical transcription factors, including Sox9, Runx2, and Runx3. Although the molecular mechanisms that control the late stages of endochondral ossification (e.g. calcification) are physiologically and pathologically important, these precise regulatory mechanisms remain unclear. Here, we demonstrate that Osterix is an essential transcription factor for endochondral ossification that functions downstream of Runx2. The global and conditional Osterix-deficient mice studied here exhibited a defect of cartilage-matrix ossification and matrix vesicle formation. Importantly, Osterix deficiencies caused the arrest of endochondral ossification at the hypertrophic stage. Microarray analysis revealed that matrix metallopeptidase 13 (MMP13) is an important target of Osterix. We also showed that there exists a physical interaction between Osterix and Runx2 and that these proteins function cooperatively to induce MMP13 during chondrocyte differentiation. Most interestingly, the introduction of MMP13 stimulated the calcification of matrices in Osterix-deficient mouse limb bud cells. Our results demonstrated that Osterix was essential to endochondral ossification and revealed that the physical and functional interaction between Osterix and Runx2 were necessary for the induction of MMP13 during endochondral ossification.
巻・号 287(40)
ページ 33179-90
公開日 2012-9-28
DOI 10.1074/jbc.M111.337063
PII S0021-9258(20)62826-5
PMID 22869368
PMC PMC3460424
MeSH Animals Cartilage / metabolism Cell Differentiation Core Binding Factor Alpha 1 Subunit / metabolism Humans Matrix Metalloproteinase 13 / biosynthesis Matrix Metalloproteinase 13 / physiology* Mice Mice, Knockout Mice, Transgenic Oligonucleotide Array Sequence Analysis Osteoarthritis / metabolism Sp7 Transcription Factor Transcription Factors / biosynthesis Transcription Factors / metabolism Transcription Factors / physiology* Transfection Up-Regulation
IF 4.238
引用数 75
WOS 分野 BIOCHEMISTRY & MOLECULAR BIOLOGY
リソース情報
遺伝子材料 pAxCALNLhMMP13(forward) (RDB03598)
ヒト・動物細胞 ATDC5(RCB0565) 293(RCB1637)