梓醇对成骨细胞-破骨细胞共育体系中破骨细胞活性、凋亡的影响及其机制研究
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篇名: 梓醇对成骨细胞-破骨细胞共育体系中破骨细胞活性、凋亡的影响及其机制研究
TITLE:
摘要: 目的:研究中药单体梓醇在成骨细胞(OB)-破骨细胞(OC)共育体系中对OC活性、凋亡的影响及其作用机制。方法:分别选用1~3 d龄和5~7 d龄SD乳鼠分离培养OB和OC,建立OB-OC共育体系。通过倒置显微镜观察0(空白对照)、0.05、0.5、5、50、100 mg/L梓醇培养48、72、96 h后OC的骨吸收陷窝数目,以反映OC活性;以0(空白对照)、0.05 mg/L梓醇培养细胞48、72、96 h,检测OC中抗酒石酸酸性磷酸酶(TRACP)活性,计算OC的凋亡率;以0(空白对照)、0.05 mg/L梓醇培养细胞并检测OB中骨保护素(OPG) mRNA的表达。结果:在OB-OC共育体系中,0.05~50 mg/L梓醇作用下所形成骨吸收陷窝数目显著低于空白对照(P<0.01),表明梓醇可抑制OC活性,其中质量浓度为0.05 mg/L时作用最明显。与空白对照比较,0.05 mg/L梓醇作用后OC中TRACP的活性降低、OC的凋亡率升高(P<0.05) ;OB的OPG mRNA表达上调(P<0.01)。结论:在OB-OC共育体系中,梓醇可抑制OC活性、诱导OC凋亡,其机制可能与上调OB的OPG mRNA表达有关。
ABSTRACT: OBJECTIVE: To study the effect of catalpol on the activity and apoptosis of osteoclasts (OC) in the osteoblasts (OB)-OC co-culture system and its mechanism. METHODS: OB and OC were isolated respectively from the SD rats of 1-3 days and 5-7 days old to establish OB-OC co-culture system. After treated with 0 (blank control), 0.05, 0.5, 5, 50 and 100 mg/L catalpol for 48, 72 and 96 h, the number of bone absorption lacuna for OC was observed by inverted microscope to reflect OC activity. After treated with 0 (blank control) and 0.05 mg/L catalpol for 48, 72 and 96 h, the activity of tartrate resistant acid phosphatase (TRACP) in OC was detected, and the apoptosis rate of OC was calculated. After treated with 0 (blank control) and 0.05 mg/L catalpol, mRNA expression of osteoprotegerin (OPG) in OB was detected. RESULTS: In OB-OC co-culture system, the number of bone absorption lacuna in 0.05-50 mg/L catalpol groups was significantly lower than blank control group (P<0.01), indicating catalpol could inhibit OC activity, especially 0.05 mg/L catapol. Compared with blank control, 0.05 mg/L catapol lowered the activity of TRACP but increased the apoptosis rate of OC (P<0.05); mRNA expression of OPG was up-regulated in OB (P<0.01). CONCLUSIONS: In OB-OC co-culture system, catalpol can inhibit the activity of OC and induce the apoptosis of OC, and its mechanism may be associated with the mRNA expression up-regulation of OPG in OB.
期刊: 2016年第27卷第10期
作者: 赖满香,陈侠,冯娟,何丽霞,杨丽
AUTHORS: LAI Manxiang,CHEN Xia,FENG Juan,HE Lixia,YANG Li
关键字: 梓醇;成骨细胞;破骨细胞;共育体系;活性;凋亡
KEYWORDS: Catalpol; Osteoblasts; Osteoclasts; Co-culture system; Acitivty; Apoptosis
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