OIC-A006 promotes osteogenesis in vitro and in vivo

Pharmazie. 2008 Oct;63(10):751-6.

Abstract

Bone morphogenesis proteins (BMPs) are one of the potent bone-forming factors. However, the safety, utility, and cost effectiveness of BMPs must be considered. Nowadays, there has been substantial interest in developing a chemical compound that safely promotes bone formation and facilitates fracture repair. Based on previous research with high throughout screening assay, we found one potent osteogenic inductive compound, named as OIC-A006 (Osteogenic inducible compound-active 006), which is classified in the amine family. In this study, we aimed to investigate the inducing effects of OIC-A006 on osteogenesis by bone marrow stem cells (BMSCs) in vitro and in vivo. We demonstrated that OIC-A006, at different concentrations, especially at optimal concentration of 6.25 microM, could stimulate BMSCs to express alkaline phosphatase (ALP), core-binding factor a1 (Cbfa1), osteopontin (OPN) and osteocalcin (OC), and to form calcified nodules in vitro. Under the bone tissue culture conditions, OIC-A006 also stimulated new bone formation of murine calvarial and metatarsal bone, indicating that OIC-A006 may exert positive effects on osteogenesis. Furthermore, to elucidate the in vivo osteogenic potential of OIC-A006, we used a rabbit skull defect model treated with sustained release microcapsules (OIC-A006/PLGA-MC) injected s.c. adjacent to the defect. These results revealed, for the first time, that OIC-A006 has the potential to promote osteogenesis in vitro and in vivo. This new compound may provide a new alterative agent for growth factors to promote bone healing and bone regeneration.

MeSH terms

  • Alkaline Phosphatase / biosynthesis
  • Animals
  • Bone Marrow Cells / drug effects
  • Bone Marrow Cells / metabolism
  • Calcification, Physiologic / drug effects
  • Cells, Cultured
  • Core Binding Factor Alpha 1 Subunit / biosynthesis
  • Core Binding Factor Alpha 1 Subunit / genetics
  • Female
  • Gene Expression / drug effects
  • Immunohistochemistry
  • Metatarsal Bones / drug effects
  • Metatarsal Bones / growth & development
  • Mice
  • Mice, Inbred C57BL
  • Osteocalcin / biosynthesis
  • Osteocalcin / genetics
  • Osteogenesis / drug effects*
  • Osteopontin / biosynthesis
  • Osteopontin / genetics
  • Pregnancy
  • Rabbits
  • Reverse Transcriptase Polymerase Chain Reaction
  • Skull / abnormalities
  • Skull / drug effects
  • Skull / growth & development
  • Stromal Cells / drug effects
  • Stromal Cells / metabolism

Substances

  • Core Binding Factor Alpha 1 Subunit
  • Osteocalcin
  • Osteopontin
  • Alkaline Phosphatase