Cartilage-derived morphogenetic proteins induce osteogenic gene expression in the C2C12 mesenchymal cell line.
Cartilage-derived morphogenetic protein-1, -2, and -3 (CDMP-1, -2, and -3) are members of the bone morphogenetic protein (BMP) family and have been shown to exhibit a variety of biological activities. In the present study, effects of these CDMPs on the temporal and spatial expression of genes in the pluripotent mesenchymal cell line C2C12 were examined. Cells cultured in the presence of CDMPs lost the characteristic elongated shape of myoblasts. At the molecular level, CDMP treatment did not change the mRNA expression of MyoD, aggrecan, Six1, and tendin. Scleraxis mRNA level was reduced by CDMP treatment. CDMP-1 and -3, but not CDMP-2, stimulated expression of osteogenic markers, such as alkaline phosphatase (AP), osteocalcin (OC), BSP, and type I collagen, in a dose- and time-dependent manner. With few exceptions, the three CDMPs changed, with different potencies, the expression profile of different members of the BMP family in a similar temporal pattern. Except at the late phase of treatment, CDMP treatment did not change the expression of ActR-IA, BMPR-IA, BMPR-IB, BMPR-II, and ALK-7 mRNAs. Based on the current data, the CDMPs appear to be able to stimulate the C2C12 cells to differentiate into the osteoblast pathway.
Yeh
Lee-Chuan C
LC
Department of Biochemistry, The University of Texas Health Science Center, San Antonio, Texas 78229-3900, USA. carolyeh@biochem.uthscsa.edu
Tsai
Alicia D
AD
Lee
John C
JC
D000818:Animals; D019485:Bone Morphogenetic Proteins / Q000494:pharmacology* / Q000502:physiology; D002454:Cell Differentiation / Q000187:drug effects*; D002460:Cell Line; D005786:Gene Expression Regulation / Q000187:drug effects* / Q000502:physiology; D008648:Mesoderm / Q000166:cytology / Q000502:physiology*; D051379:Mice; D010006:Osteoblasts / Q000502:physiology
D019485:Bone Morphogenetic Proteins