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雷公藤红素及其衍生物的体外神经保护作用与机制研究
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          陈佩佩 ,袁晓煊 ,张 鑫 ,徐 伟 ,许少华 (1.福建中医药大学药学院,福州 350122;2.中国中医科学院
          道地药材国家重点实验室,北京 100700)
          中图分类号  R965;R285      文献标志码  A      文章编号  1001-0408(2024)05-0536-06
          DOI  10.6039/j.issn.1001-0408.2024.05.05

          摘   要  目的  从神经炎症和氧化损伤 2 个方面探究雷公藤红素(Cel)及其衍生物 Cel-1、Cel-2 的神经保护作用及可能机制。
          方法  利用1 μg/mL脂多糖(LPS)诱导建立小胶质BV2细胞神经炎症模型、200 μmol/L过氧化氢(H2O2 )诱导建立人神经母细胞瘤
          SH-SY5Y细胞氧化损伤模型,考察不同浓度(0.625~20 μmol/L)Cel、Cel-1、Cel-2对2种细胞的毒性;并在安全浓度(0.039~0.625
          μmol/L)范围内检测LPS诱导BV2细胞培养液中一氧化氮(NO)、肿瘤坏死因子α(TNF-α)、白细胞介素1β(IL-1β)、IL-6含量,检
          测H2O2诱导SH-SY5Y细胞的存活率。检测0.156、0.313、0.625 μmol/L活性化合物Cel-2作用后H2O2诱导SH-SY5Y细胞中磷脂酰
          肌醇3激酶(PI3K)、磷酸化PI3K(p-PI3K)、蛋白激酶B(Akt)、磷酸化Akt(p-Akt)、胱天蛋白酶3(caspase-3)、B淋巴细胞瘤2(Bcl-2)
          和Bcl-2相关X蛋白(Bax)表达水平。结果  在0.039~0.625 μmol/L浓度梯度区间,神经炎症模型实验显示,Cel、Cel-1、Cel-2均可
          降低BV2细胞培养液中NO、TNF-α、IL-1β、IL-6的含量(P<0.05或P<0.01),其对神经炎症的半数抑制浓度分别为(0.25±0.04)、
         (0.61±0.14)、(0.11±0.02) μmol/L;氧化损伤模型实验显示,Cel、Cel-1、Cel-2 在一定浓度下可逆转 H2O2处理后 SH-SY5Y 细胞存
          活率降低的现象(P<0.05或P<0.01),其神经保护的半数效应浓度分别为(0.43±0.08)、(0.45±0.04)、(0.28±0.03) μmol/L。经H2O2
          诱导,Cel-2干预后SH-SY5Y 细胞中 PI3K、Akt 蛋白的磷酸化水平和 Bcl-2 蛋白表达水平、Bcl-2/Bax 比值均显著升高(P<0.05 或
          P<0.01),caspase-3、Bax蛋白表达水平均显著降低(P<0.05或P<0.01)。结论  Cel、Cel-1、Cel-2在一定浓度下均具有显著的神经
          保护活性,且以Cel-2的活性最强;Cel-2的作用机制可能与调控PI3K/Akt、caspase-3/Bcl-2/Bax信号通路,减轻炎症反应、氧化应激
          损伤,抑制神经细胞凋亡有关。
          关键词  雷公藤红素;衍生物;神经保护作用;神经炎症;氧化应激


          Neuroprotective effect and mechanism of celastrol and its derivatives in vitro
          CHEN Peipei ,YUAN Xiaoxuan ,ZHANG Xin ,XU Wei ,XU Shaohua (1.  College  of  Pharmacy,  Fujian
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          University  of  Traditional  Chinese  Medicine,  Fuzhou  350122,  China;2.  State  Key  Laboratory  of  Dao-di  Herbs,
          China Academy of Chinese Medical Sciences, Beijing 100700, China)
          ABSTRACT    OBJECTIVE  To  explore  the  neuroprotective  effect  and  possible  mechanism  of  celastrol (Cel)  and  its  derivatives
         (Cel-1,  Cel-2)  in  terms  of  neuroinflammation  and  oxidative  damage.  METHODS  Neuroinflammation  model  of  microglial  BV2
          cells  was  induced  by  1  μg/mL  lipopolysaccharide (LPS);  oxidative  damage  model  of  human  neuroblastoma  SH-SY5Y  cells  was
          induced  by  200  μmol/L  hydrogen  peroxide (H2O2 ).  The  toxicity  of  different  concentrations  of  Cel,  Cel-1  and  Cel-2 (0.625-20
          μmol/L) to the two types of cells was investigated. The levels of nitric oxide (NO), tumor necrosis factor α (TNF-α), interleukin
          1β (IL-1β),  and  IL-6  in  BV2  cells  induced  by  LPS  at  safe  concentrations (0.039-0.625  μmol/L)  were  all  detected.  The  survival
          rate of SH-SY5Y cells induced by H2O2 was also determined. The expression levels of phosphoinositide 3-kinase (PI3K), p-PI3K,
          protein kinase B (Akt), p-Akt, cystatinase 3 (caspase-3), B-cell lymphoma 2 (Bcl-2) and Bcl-2-related X protein (Bax) in SH-
          SY5Y  cells  induced  by  H2O2  at  0.156,  0.313,  0.625  μmol/L  of  active  compound  2  were  all  detected.  RESULTS  In  the
          concentration  gradient  range  between  0.039  and  0.625  μmol/L,  the  results  of  neuroinflammation  model  experiments  showed  that
          Cel, Cel-1 and Cel-2 could reduce the contents of NO, TNF-α, IL-1β, and IL-6 in culture medium of BV2 cells (P<0.05 or P<
          0.01);  their  IC50  values  for  neuroinflammation  were (0.25±0.04), (0.61±0.14)  and (0.11±0.02)  μmol/L  respectively.
                                                              Meanwhile,  all  of  them  could  reverse  the  phenomenon  of
               Δ 基金项目 国家自然科学基金项目(No.82104321);中央本级            decreased  cell  survival  rate  after  H2O2  treatment  in  the
          重 大 增 减 支 项 目(No. 2060302);福 建 省 自 然 科 学 基 金 项 目(No.  oxidative  damage  experiments  at  a  certain  concentration (P<
          2020J05062);福建中医药大学基础类学科科研提升计划项目(No.                0.05 or P<0.01), with neuroprotective EC50 values of (0.43±
          XJC2023009)                                         0.08), (0.45±0.04)  and (0.28±0.03)  μmol/L,  respectively.
              *第一作者 硕士研究生。研究方向:中药资源及品质评价。
                                                              Induced  by  H2O2,  the  phosphorylation  of  PI3K  and  Akt
          E-mail:2459751484@qq.com
               # 通信作者 副教授,硕士生导师。研究方向:中药化学成分与活                 protein,  protein  expressions  of  Bcl-2  and  Bcl-2/Bax  ratio  were
          性。E-mail:xushaohua@fjtcm.edu.cn                     all  increased  significantly (P<0.05  or  P<0.01),  while  the


          · 536 ·    China Pharmacy  2024 Vol. 35  No. 5                               中国药房  2024年第35卷第5期
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