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  • Title: Small molecules with potent osteogenic-inducing activity in osteoblast cells.
    Author: Han CY, Wang Y, Yu L, Powers D, Xiong X, Yu V, Nguyen Y, Jean DJ, Babij P.
    Journal: Bioorg Med Chem Lett; 2009 Mar 01; 19(5):1442-5. PubMed ID: 19179072.
    Abstract:
    A chemical screen of 45,000 compounds from a diverse collection led to the identification of two series of small molecules with potent osteogenic activity in mouse MC3T3-E1 osteoblast cells. The first chemical group was characterized by an amino benzothiazole core (AMG0892 series) and the second group by a naphthyl amide core (AMG0309 series). Using alkaline phosphatase (ALP), osteocalcin (OCL) and calcium as markers of osteoblast differentiation and mineralization, both chemical series showed EC(50)s in the 0.01-0.2 microM range and were consistent for all three markers. Compounds inhibited cell proliferation, had no effect on apoptosis and showed evidence for CREB pathway activity. The present compounds represent some of the most potent osteogenic small molecules reported to date and provide new tools for elucidating signaling mechanisms in osteoblasts.
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