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Biosci Rep. 2010 Jun 4. [Epub ahead of print]( ]: ^( T8 _. }8 L
Estrogen receptors are involved in the osteogenic differentiation of periodontal ligament stem cells.3 ^( O% g$ \6 B8 x
Pan F, Zhang R, Wang G, Ding Y.# @1 w4 X( X1 @4 p _$ X. X
Abstract+ o) W9 \* c. }9 B, X
The existence of periodontal ligament stem cells (PDLSCs) in periodontal ligament (PDL) has been identified and it may function in periodontal reconstruction, including bone formation. As estrogens/estrogen receptors (ERalpha and ERbeta) exert important effects in bone formation, however, the relationship between estrogen receptors and PDLSCs has not been established. In the present study, PDLSCs were isolated and the assays to detect the biomarkers and multipotent differentiation confirmed the validity of human PDLSCs. The results of RT-PCR and Western blot showed that ERalpha and ERbeta expressed higher in PDLSCs as compared with PDLCs, 17beta-estradiol obviously induced the osteogenic differentiation of PDLSCs in vitro. Furthermore, Pan-ERs inhibitor or lentivirus-mediated siRNA targeting ERalpha or ERbeta blocked the estrogen-induced osteogenic differentiation of PDLSCs. The results indicate that both ERalpha and ERbeta were involved in the process of osteogenic differentiation of PDLSCs.
. f" f! H' m" O0 M* A. M. v# [6 SPMID: 20524935 [PubMed - as supplied by publisher]7 I4 y2 C; X% A, B+ K! }' ?
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