摘要
目的:探究补肾活血方含药血清对白细胞介素-1β(interleukin-1β,IL-1β)刺激的人原代软骨细胞microRNA芯片表达的影响。方法:采用免疫组化和甲苯胺蓝染色鉴定了原代培养的人软骨细胞,然后采用IL-1β(10 ng/m L)刺激人原代软骨细胞,并且加入补肾活血方含药血清处理24 h。抽提细胞RNA采取反转录荧光标记microRNA,标记完成之后取样品与microRNA表达谱芯片进行杂交,并用激光扫描仪检测其杂交信号,再用相应软件分析所得数据。结果:与对照组比较,补肾活血方含药血清导致9个已知的microRNA表达呈明显上升(诱导倍数> 2)以及4个已知的microRNA表达明显下降(抑制倍数> 2)。RT-qPCR结果表明补肾活血方含药血清对miR-140-5p的表达具有明显诱导作用。结论:补肾活血方可能通过调节miR-140-5p靶向ADAMTS-5和MMP-13等基因在维持软骨细胞外基质稳态中发挥作用。
Objective: To investigate the effect of Bushen Huoxue Recipe on gene expression profile of interleukin-1β( IL-1β)-stimulated human chondrocytes. Methods: For in vitro study,cultured human chondrocytes were treated with IL-1β( 10 ng·m L~(-1)) in the presence or absence of Bushen Huoxue Recipe-contained serum for 24 h. Cell RNA was extracted and reverse-transcripted into fluorescently-labeled microRNA which was hybridized with microRNA expression profile chip. Furthermore,laser scanner was used to detect the hybridization signal. Finally,the data was analyzed by related software. Results: Compared with normal control group,Bushen Huoxue Recipe obviously increased expression of 9 known microRNAs( fold > 2),and markedly reduced expression of 4 known microRNAs( fold > 2). In addition,RT-q PCR detection demonstrated that Bushen Huoxue Recipe significantly elevated miR-140-5p expression in IL-1β-stimulated human chondrocytes( P < 0. 05). Conclusion: These results demonstrated that the Bushen Huoxue Recipe could maintain chondrocyte extracellular matrix homeostasis by regulation of miR-140-5p and its targets of ADAMTS-5 and MMP-13 genes.
引文
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