論文 - 詳細
| RRC ID | 42947 |
|---|---|
| 著者 | Zhu W, Boachie-Adjei O, Rawlins BA, Frenkel B, Boskey AL, Ivashkiv LB, Blobel CP. |
| タイトル | A novel regulatory role for stromal-derived factor-1 signaling in bone morphogenic protein-2 osteogenic differentiation of mesenchymal C2C12 cells. |
| ジャーナル | J Biol Chem |
| Abstract |
Stromal-derived factor 1 (SDF-1) is a chemokine with important functions in development and postnatal tissue homeostasis. SDF-1 signaling via the G-protein-coupled receptor CXCR4 regulates the recruitment of stem and precursor cells to support tissue-specific repair or regeneration. In this study we examined the contribution of SDF-1 signaling to osteogenic differentiation of mesenchymal C2C12 cells induced by bone morphogenic protein 2 (BMP2). Blocking SDF-1 signaling before BMP2 stimulation by treatment with siRNA, antibodies against SDF-1 or CXCR4, or the G-protein-coupled receptor inhibitor pertussis toxin strongly suppressed BMP2 induction of osteogenic differentiation in C2C12 cells, as evidenced by an early decrease in the expression of the myogenesis inhibitor Id1, the osteogenic master regulators Runx2 and Osx, the osteoblast-associated transcription factors JunB, Plzf, Msx2, and Dlx5, and later of the bone marker proteins osteocalcin and alkaline phosphatase. Similarly, blocking SDF-1/CXCR4 signaling strongly inhibited BMP2-induced osteogenic differentiation of ST2 bone marrow stromal cells. Moreover, we found that the interaction between SDF-1 and BMP2 signaling was mediated via intracellular Smads and MAPK activation. Our data provide the first evidence for a co-requirement of the SDF-1/CXCR4 signaling axis in BMP2-induced osteogenic differentiation of C2C12 and ST2 cells and, thus, uncover a new potential target for modulation of osteogenesis. |
| 巻・号 | 282(26) |
| ページ | 18676-85 |
| 公開日 | 2007-6-29 |
| DOI | 10.1074/jbc.M610232200 |
| PII | S0021-9258(20)87333-5 |
| PMID | 17439946 |
| MeSH | Alkaline Phosphatase / metabolism Animals Antibodies / pharmacology Bone Morphogenetic Protein 2 Bone Morphogenetic Proteins / metabolism* Bone Morphogenetic Proteins / pharmacology Cell Differentiation / drug effects Cell Differentiation / physiology Cell Line Chemokine CXCL12 Chemokines, CXC / genetics Chemokines, CXC / immunology Chemokines, CXC / metabolism* Gene Expression / drug effects Gene Expression / physiology Inhibitor of Differentiation Protein 1 / genetics Ligands MAP Kinase Signaling System / drug effects MAP Kinase Signaling System / physiology Mesoderm / cytology Mice MyoD Protein / genetics Myoblasts / cytology Myoblasts / metabolism Osteoblasts / cytology* Osteoblasts / metabolism Osteocalcin / biosynthesis Osteogenesis / physiology Pluripotent Stem Cells / cytology* Pluripotent Stem Cells / metabolism RNA, Small Interfering Receptors, CXCR4 / metabolism Smad Proteins / metabolism Stromal Cells / cytology Stromal Cells / metabolism* Transcription Factors / metabolism Transforming Growth Factor beta / metabolism* Transforming Growth Factor beta / pharmacology |
| IF | 4.238 |
| 引用数 | 77 |
| WOS 分野 | BIOCHEMISTRY & MOLECULAR BIOLOGY |
| リソース情報 | |
| ヒト・動物細胞 | ST2(RCB0224) |