Abstract:
:Radix Dipsaci total saponins (RTS) are primary active components of Radix Dipsaci, which is administered orally for the treatment of osteoporosis according to Chinese Medicine. RTS have also been shown to reduce the risk of bone fractures in rats. However, the detailed molecular mechanisms underlying their action remain elusive. In the present study, the ability of RTS to increase alkaline phosphatase activity, osteocalcin levels and the degree of mineralization was investigated in MC3T3‑E1 mouse osteoblast precursor cells. In addition, the associated molecular mechanism was detected. The results revealed that RTS exerted an effect on osteoblastic maturation and differentiation. Induction of differentiation by RTS was associated with an increase in the expression levels of bone morphogenetic protein‑2 (BMP‑2), phosphorylated (P)‑Smad1/5/8, P‑ERK1/2, P‑p38 and Runt‑related transcription factor 2 (Runx2). Blocking BMP‑2 expression with noggin significantly reduced the levels of osteoblastic differentiation and subsequently attenuated the expression levels of P‑Smad1/5/8, P‑ERK1/2, P‑p38 and Runx2. This indicated that RTS induced osteoblastic differentiation through BMP‑2/mitogen‑activated protein kinase/Smad1/5/8‑dependent Runx2 signaling pathways and that it may be a promising agent for enhancing bone formation.
journal_name
Mol Med Repjournal_title
Molecular medicine reportsauthors
Niu YB,Kong XH,Li YH,Fan L,Pan YL,Li CR,Wu XL,Lu TL,Mei QBdoi
10.3892/mmr.2015.3249subject
Has Abstractpub_date
2015-06-01 00:00:00pages
4468-72issue
6eissn
1791-2997issn
1791-3004journal_volume
11pub_type
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