title: Curculigoside promotes osteogenic differentiation of bone marrow stromal cells from ovariectomized rats.
abstract: Curculigoside, a natural compound isolated from the medicinal plant Curculigo orchioides has been reported to prevent bone loss in ovariectomized rats. However, the underlying molecular mechanisms are largely unknown. This study investigated the effects of curculigoside on proliferation and osteogenic differentiation of bone marrow stromal cells (BMSCs).
  
  
  
  The toxicity, proliferation and osteogenic differentiation of BMSCs cultured with various concentrations (0 as control, 10, 100 and 500 µm) of curculigoside were measured by viability assay, MTT analysis, alkaline phosphatase (ALP) activity assay, alizarin red staining and mineralization assay, real-time PCR analysis on osteogenic genes including ALP, type I collagen (Col I), osteocalcin (OCN) and osteoprotegerin (OPG), runt-related transcription factor 2 (Runx2), as well as OPG enzyme-linked immunosorbent assay.
  
  
  
  No significant cytotoxicity was observed for BMSCs after supplementation with curculigoside. The proliferation of BMSCs was enhanced after administration of curculigoside, especially 100 µm curculigoside. Moreover, the osteogenic gene expression was significantly enhanced with 100 µm curculigoside treatment. Importantly, curculigoside significantly increased OPG secretion.
  
  
  
  The data indicate that curculigoside could promote BMSC proliferation and induce osteogenic differentiation of BMSCs. The most profound response was observed with 100 µm curculigoside. These findings may be valuable for understanding the mechanism of the effect of curculigoside on bone, especially in relation to osteoporosis.
authors.affiliation: Shanghai Stomatological Disease Center, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China.
authors.forename: Qingping
authors.initials: Q
authors.lastname: Shen
authors.forename: Deliang
authors.initials: D
authors.lastname: Zeng
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhou
authors.forename: Lunguo
authors.initials: L
authors.lastname: Xia
authors.forename: Yanfang
authors.lastname: Zhao
authors.forename: Guangyang
authors.initials: G
authors.lastname: Qiao
authors.forename: Lianyi
authors.initials: L
authors.lastname: Xu
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.forename: Ziyuan
authors.initials: Z
authors.lastname: Zhu
authors.forename: Xinquan
authors.initials: X
authors.lastname: Jiang
mesh_terms: D000818:Animals; D001565:Benzoates / Q000008:administration & dosage / Q000494:pharmacology* / Q000633:toxicity; D002454:Cell Differentiation / Q000187:drug effects*; D049109:Cell Proliferation / Q000187:drug effects; D031408:Curculigo / Q000737:chemistry; D004305:Dose-Response Relationship, Drug; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005786:Gene Expression Regulation / Q000187:drug effects; D005960:Glucosides / Q000008:administration & dosage / Q000494:pharmacology* / Q000633:toxicity; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000187:drug effects*; D010012:Osteogenesis / Q000187:drug effects* / Q000235:genetics; D053244:Osteoprotegerin / Q000187:drug effects / Q000378:metabolism; D010052:Ovariectomy; D051381:Rats; D017208:Rats, Wistar; D060888:Real-Time Polymerase Chain Reaction
chemical_list: D001565:Benzoates; D005960:Glucosides; D053244:Osteoprotegerin; C477170:curculigoside