Proteinase-activated receptor (PAR)-2 activation impacts bone resorptive properties of human osteoarthritic subchondral bone osteoblasts

Proteinase-activated receptor (PAR)-2 activation impacts bone resorptive properties of human osteoarthritic subchondral bone osteoblasts
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DOI:
10.1016/j.bone.2009.02.015
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发表时间:
2009-06-01
期刊:
影响因子:
4.1
通讯作者:
Boileau, Christelle
Boileau, Christelle
中科院分区:
医学2区
文献类型:
--
作者:
Amiable, Nathalie;Tat, Steeve Kwan;Boileau, Christelle

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简介:在骨关节炎(OA)中,软骨下骨经历了重塑过程,涉及成骨细胞合成的几个因素。在这项研究中,我们研究了PAR-2在人OA下骨骨骨细胞中的表达,产生,调节和作用。分别通过实时PCR和流式细胞仪确定PAR-2的表达和产生。在用IL-1β(100 pg/mL),TNF-Alpha(5 ng/ml),TGF-BETA 1(10 ng/ml),PGE(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(2)(5 ng/ml),在用IL-1β(100 pg/mL)处理的OA下骨成骨细胞中研究了PAR-2调节。 500 nm),IL-6(10 ng/ml)和IL-17(10 ng/ml)。通过流式细胞仪和OPG,MMP-1,MMP-9,MMP-13,IL-6和细胞内信号通路通过特定ELISA评估膜状RANKL蛋白。使用人PBMC和OA下骨骨骨细胞的共培养模型来测量骨骼吸收活性。
Introduction: In osteoarthritis (OA), the subchondral bone undergoes a remodelling process involving several factors synthesized by osteoblasts. In this study, we investigated the expression, production, modulation, and role of PAR-2 in human OA subchondral bone osteoblasts.Materials and methods: PAR-2 expression and production were determined by real-time PCR and flow cytometry, respectively. PAR-2 modulation was investigated in OA subchondral bone osteoblasts treated with IL-1 beta (100 pg/ml), TNF-alpha (5 ng/ml), TGF-beta 1 (10 ng/ml), PGE(2) (500 nM), IL-6 (10 ng/ml) and IL-17 (10 ng/ml). Membranous RANKL protein was assessed by flow cytometry, and OPG, MMP-1, MMP-9, MMP-13, IL-6 and intracellular signalling pathways by specific ELISAs. Bone resorptive activity was measured by using a co-culture model of human PBMC and OA subchondral bone osteoblasts.Results: PAR-2 expression and production (p