高浓度葡萄糖对人树突状细胞CD83、CD86、CD36、CCR7和-阿片受体的影响

    Effect of high glucose on the expressions of CD83,CD86, CD36,CCR7 and -opioid receptor in dendritic cells

    • 摘要: 目的:观察高浓度葡萄糖对人树突状细胞(DC)受体CD83、CD86、CD36、CCR7和-阿片受体(MOR)表达的影响,探讨高血糖在动脉粥样硬化免疫炎症反应中的作用。方法:从人外周血中提取和分离单个核细胞,在含重组人粒细胞-巨噬细胞集落刺激因子和重组人白介素-4的RPMI 1640完全培养基中培养。7 d后未成熟DC分3组,分别在含有D-葡萄糖5 mmol/L(NG组)、10 mmol/L(TG组)和25 mmol/L(HG组)的RPMI 1640完全培养基中继续培养48 h后,采用流式细胞术检测DC表面CD83、CD86、CD36、MOR和CCR7的变化。结果:TG组和HG组DC表面分子CD36、CCR7、CD83和CD86的阳性率均高于NG组(P0.05~P0.01),HG组DC表面分子MOR的阳性率高于NG组(P0.05),而HG组CD36、CD83和CD86的阳性率亦均明显高于TG组(P0.01)。结论:高浓度葡萄糖能促进DC表面分子CD36、CD86、CD83和CCR7的表达。

       

      Abstract: Objective: The aim of the present study was to investigate the expressions of scavenger receptor CD36,CCR7,CD83,CD86 and -opioid receptor( MOR) in dendritic cells( DC) induced by high glucose,then explore the effect of hyperglycemia on atherosclerosis. Methods: Immature dendritic cells( imDC) were extracted from normal human peripheral blood mono-nuclear cells( PBMC) which were isolated and cultured with cytokines including GM-CSF and IL-4. After 7 days,the imDC were separated into 3 group,and differently cultured in RPMI1640 medium with either 5 mmol / L D-glucose( NG group),10 mmol / L glucose( TG group) and 25 mmol / L D-glucose( HG group) for 48 hours,and the expressions of the surface markers( CD83,CD86,CD36 and CCR7) in DC were analyzed by flow cytometry. Results: Compared with NG group,the expressions of CD36,CD83,CD86 and CCR7 were significantly upregulated in TG and HG groups( P 0. 05 to P 0. 01). Compared with NG group,the expression of MOR was significuntly upregulated in HG group( P 0. 05). And compared with TG group,the expressions of CD36,CD83 and CD86 were significantly increased in HG group( P 0. 01). Conclusions: High glucose can promote the expressions of surface molecular CD36,MOR and CCR7 in DC.

       

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