Reference - Detail
|Author||Yuasa T, Kataoka H, Kinto N, Iwamoto M, Enomoto-Iwamoto M, Iemura S, Ueno N, Shibata Y, Kurosawa H, Yamaguchi A.|
|Title||Sonic hedgehog is involved in osteoblast differentiation by cooperating with BMP-2.|
|Journal||J. Cell. Physiol.|
The roles of Sonic hedgehog (Shh) and Bone morphogenetic protein-2 (Bmp-2) in osteoblast differentiation were investigated using in vitro cell systems. Recombinant amino-terminal portion of SHH (rSHH-N) dose dependently stimulated ALP activity in C3H10T1/2 and MC3T3-E1 cells. rSHH-N induced expression of Osteocalcin mRNA in C3H10T1/2 cells. A soluble form of the receptor for type IA BMP receptor antagonized rSHH-N-induced ALP activity in C3H10T1/2 and MC3T3-E1 cells, indicating that BMPs are involved in SHH-induced osteoblast differentiation. Simultaneous supplement with rSHH-N and BMP-2 synergistically induced ALP activity and expression of Osteocalcin mRNA in C3H10T1/2 cells. Pretreatment with rSHH-N for 6 h enhanced the response to BMP-2 by increasing ALP activity in C3H10T1/2 and MC3T3-E1 cells. Stimulatory effects of rSHH-N and additive effects with rSHH-N and BMP-2 on ALP activity were also observed in mouse primary osteoblastic cells. Transplantation of BMP-2 (1 microg) into muscle of mice induced formation of ectopic bone, whereas transplantation of r-SHH-N (1-5 microg) failed to generate it. These results indicate that Shh plays important roles in osteoblast differentiation by cooperating with BMP.
|MeSH||Alkaline Phosphatase / analysis Animals Bone Development Bone Morphogenetic Protein 2 Bone Morphogenetic Proteins / physiology* Cell Differentiation Cell Line Collagen Type I / metabolism Dose-Response Relationship, Drug Embryonic Induction Hedgehog Proteins Humans Mice Mice, Inbred C3H Osteoblasts / cytology* Osteoblasts / drug effects Osteoblasts / enzymology Osteoblasts / transplantation Osteocalcin / drug effects Osteocalcin / metabolism Peptide Fragments / metabolism RNA, Messenger / metabolism Recombinant Proteins / pharmacology Time Factors Trans-Activators / physiology* Transforming Growth Factor beta / metabolism Transplants|
|WOS Category||PHYSIOLOGY CELL BIOLOGY|
|Human and Animal Cells|