Differentiation of skeletal osteogenic progenitor cells to osteoblasts with 3,4-diarylbenzopyran based amide derivatives: Novel osteogenic agents

Eur J Med Chem. 2016 Oct 4:121:82-99. doi: 10.1016/j.ejmech.2016.05.023. Epub 2016 May 9.

Abstract

A series of 3,4-diarylbenzopyran based amide derivatives was synthesized and evaluated for osteogenic activity in in vitro and in vivo models of osteoporosis. Compounds 17a, 21b-c and 22a-b showed significant osteogenic activity in osteoblast differentiation assay. Among the synthesized compounds, 22b was identified as lead molecule which showed significant osteogenic activity at 1 pM concentration in osteoblast differentiation assay and at 1 mg kg(-1) body weight dose in estrogen deficient balb/c mice model. In vitro bone mineralization and expression of osteogenic marker genes viz BMP-2, RUNX-2, OCN, and collagen type 1 further confirmed the osteogenic potential of 22b. Gene expression study for estrogen receptor α and β (ER-α and ER-β) in mouse calvarial osteoblasts (MCOs) unveiled that possibly 22b exerted osteogenic efficacy via activation of Estrogen receptor-β preferentially. In vivo pharmacokinetic, estrogenicity and acute toxicity studies of 22b showed that it had good bioavailability and was devoid of uterine estrogenicity at 1 mg kg(-1) and inherent toxicity up to 1000 mg kg(-1) body weight dose respectively.

Keywords: Antiosteoporotic; Benzopyran; Estrogen; Isoflavone; Osteogenic.

MeSH terms

  • Amides / chemistry*
  • Amides / pharmacokinetics
  • Amides / pharmacology
  • Animals
  • Benzopyrans / chemistry
  • Benzopyrans / pharmacokinetics
  • Benzopyrans / pharmacology*
  • Biological Availability
  • Cell Differentiation / drug effects*
  • Estrogen Receptor beta / metabolism
  • Mice
  • Mice, Inbred BALB C
  • Osteoblasts / cytology*
  • Osteogenesis / drug effects
  • Osteoporosis / chemically induced
  • Stem Cells / cytology*
  • Structure-Activity Relationship

Substances

  • Amides
  • Benzopyrans
  • Estrogen Receptor beta