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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 ·
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