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绿原酸抑制巨噬细胞激活的机制研究
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郑 薇 ,郎 静 ,黄西凤 ,肖 锐 ,白 荷 ,贾 济 (1. 中国人民解放军南部战区总医院麻醉科,广州
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510501;2.中国人民解放军西部战区总医院骨科,成都 610083)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2023)21-2601-07
DOI 10.6039/j.issn.1001-0408.2023.21.06
摘 要 目的 观察绿原酸对脂多糖(LPS)致巨噬细胞激活的影响,并探讨骨髓细胞2表达的触发受体(TREM2)蛋白在其中的作
用。方法 为筛选LPS造模浓度,分别以1、10、100 ng/mL的LPS培养细胞24 h,检测细胞培养上清液中白细胞介素6(IL-6)水平和
细胞中诱导型一氧化氮合酶(iNOS)蛋白表达水平。为筛选绿原酸给药浓度,将细胞分为Control组、LPS处理组和3个不同浓度
绿原酸(0.01、0.1、1 μmol/L)干预组,检测细胞培养上清液中肿瘤坏死因子α(TNF-α)、IL-1β水平和细胞中iNOS、TREM2蛋白表
达水平以及细胞活力。为观察TREM2在绿原酸抑制巨噬细胞激活中的作用,采用TREM2小干扰RNA(TREM2-siRNA)干扰细
胞 TREM2 蛋白表达,将细胞分为 Control 组、LPS 处理组、绿原酸+LPS 组、TREM2-siRNA+绿原酸+LPS 组和乱序-siRNA(SC-
siRNA)+绿原酸+LPS组,在含有上述药物的培养基/空白培养基中孵育24 h后,检测细胞培养上清液中TNF-α和IL-1β水平以及
细胞中TREM2、iNOS和核因子κB p65(NF-κB p65)的蛋白表达水平。结果 10 ng/mL LPS可显著促进细胞释放IL-6,并增加细胞
中iNOS蛋白表达水平,故选择该质量浓度LPS进行后续实验。与LPS处理组相比,0.1 μmol/L绿原酸干预组细胞培养上清液中
TNF-α、IL-1β水平和细胞中iNOS蛋白表达水平均显著降低(P<0.05),细胞中TREM2蛋白表达水平显著升高(P<0.05),细胞活
力未受影响,故选择该浓度的绿原酸进行后续实验。在观察TREM2蛋白在绿原酸抑制巨噬细胞激活中的作用中发现,与Control
组比较,LPS 处理组细胞中 iNOS 和 NF-κB p65 蛋白表达水平均显著升高(P<0.05);与 LPS 处理组比较,绿原酸+LPS 组细胞中
iNOS和NF-κB p65蛋白表达水平均显著降低、TREM2蛋白表达水平显著升高(P<0.05);与绿原酸+LPS组比较,TREM2-siRNA+
绿原酸+LPS组细胞中iNOS和NF-κB p65蛋白表达水平均显著升高、TREM2蛋白表达水平显著降低(P<0.05),TREM2-siRNA明
显逆转了绿原酸的上述作用;而SC-siRNA未对绿原酸产生的上述作用造成影响。结论 绿原酸可显著抑制LPS对巨噬细胞的激
活,其抗炎作用可能是通过TREM2蛋白介导的。
关键词 绿原酸;巨噬细胞;脂多糖;炎症;骨髓细胞2表达的触发受体
Mechanism study of chlorogenic acid alleviating macrophage activation
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ZHENG Wei ,LANG Jing ,HUANG Xifeng ,XIAO Rui ,BAI He ,JIA Ji(1. Dept. of Anesthesiology, General
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Hospital of Southern Theatre Command, Guangzhou 510501, China;2. Dept. of Orthopedics, General Hospital
of Western Theatre Command, Chengdu 610083, China)
ABSTRACT OBJECTIVE To observe the effects of chlorogenic acid on the activation of macrophage induced by
lipopolysaccharide (LPS), and to explore the role of triggering receptors expressed on myeloid cells-2 (TREM2) in the action.
METHODS To find a suitable LPS concentration, the cells were cultured with 1, 10 and 100 ng/mL LPS for 24 h. The level of
interleukin 6 (IL-6) in the cell culture supernatant and protein expression of inducible nitric oxide synthase (iNOS) in the cells
were detected. To search for a suitable chlorogenic acid concentration, the cells were divided into control group, LPS group and
three chlorogenic acid (0.01, 0.1 and 1 μmol/L)+LPS groups. The levels of tumor necrosis factor α (TNF-α) and IL-1β in the cell
culture supernatant, the protein expressions of iNOS and TREM2 in the cells and cell viability were detected. To observe the effects
of TREM2 in chlorogenic acid alleviating macrophage activation, TREM2-small interfering RNA (TREM2-siRNA) was taken to
intervene in TREM2 protein expression. The cells were divided into control group, LPS group, chlorogenic acid+LPS group,
TREM2-siRNA+chlorogenic acid+LPS group and SC-siRNA+chlorogenic acid+LPS group. After 24 h incubation, the levels of TNF-
α and IL-1β in the cell culture supernatant and protein expressions of TREM2, iNOS and nuclear factor κB p65 (NF-κB p65) in
the cells were detected. RESULTS 10 ng/mL LPS promoted
Δ 基金项目 广东省自然科学基金项目(No.2017A030313810) IL-6 release and increased iNOS protein expression, and 10
*第一作者 主治医师。研究方向 :天然抗炎药物。E-mail:
ng/mL LPS was taken in the next experiments. Compared with
277646064@qq.com
# 通信作者 副主任医师,博士。研究方向:抗炎药物。E-mail: the LPS group, 0.1 μmol/L chlorogenic acid decreased TNF-α
jiaji1981@126.com and IL-1β levels, and down-regulated iNOS expression,
中国药房 2023年第34卷第21期 China Pharmacy 2023 Vol. 34 No. 21 · 2601 ·