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·药学研究·


          胀果甘草粗多糖及其纯化多糖对树突状细胞成熟和抗肿瘤作用
          的影响及机制
                               Δ


          娜迪热木·肖克拉提 ,俞永婷,卢泳强,周朝曦,张丽丽,丛媛媛(新疆医科大学药学院,乌鲁木齐 830011)
                           *
                                                                  #
          中图分类号  R285.5;R965      文献标志码  A      文章编号  1001-0408(2024)20-2453-07
          DOI  10.6039/j.issn.1001-0408.2024.20.02

          摘  要  目的  研究胀果甘草粗多糖(GiP)及其纯化多糖GiP-B1对荷瘤小鼠树突状细胞(DC)成熟和抗肿瘤作用的影响及机制。
          方法  将体外培养的肝癌细胞H22荷瘤小鼠未成熟DC(imDC)分为对照组、肿瘤坏死因子α(TNF-α)组、GiP组及GiP-B1组,检测
          荷瘤小鼠成熟 DC(mDC)的细胞活力,表面标志物(CD11c、CD80、CD86、MHC-Ⅱ)阳性表达率,白细胞介素 12p70(IL-12p70)及
          IL-4水平;通过荷瘤小鼠mDC与CD4 T淋巴细胞共培养生成CD4-细胞毒性T细胞(CD4-CTL),检测刺激指数,CD4-CTL上清液
                                      +
          中 IL-12p70、干扰素-γ(IFN-γ)、IL-4、IL-10 水平及对 H22 细胞的杀伤活性;检测共培养后荷瘤小鼠 mDC 中 IL-12、IL-12 受体
         (IL-12R)、信号转导和转录激活因子4(STAT-4)mRNA表达量,以及IL-12Rβ2蛋白表达量,核转录因子κB(NF-κB)p65、STAT-4蛋
          白磷酸化水平。结果  与对照组比较,GiP组与GiP-B1组荷瘤小鼠mDC细胞活力、MHC-Ⅱ阳性表达率以及IL-12p70、IL-4水平均
          显著升高(P<0.05),CD11c、CD80、CD86 阳性表达率均有升高趋势,但差异均无统计学意义(P>0.05)。共培养后刺激指数、
          IL-12p70、IFN-γ水平均显著升高(P<0.05),IL-4、IL-10(GiP组除外)水平均显著降低(P<0.05),对H22细胞的杀伤活性均显著增
          强(P<0.05);荷瘤小鼠mDC中IL-12、IL-12R(GiP组除外)、STAT-4 mRNA表达量,IL-12Rβ2蛋白表达量以及NF-κB p65、STAT-4
          蛋白磷酸化水平均显著升高(P<0.05)。结论  GiP及GiP-B1对荷瘤小鼠DC的成熟有较好的促进作用,能有效刺激CD4 T细胞增
                                                                                                      +
          殖并增强CD4-CTL的抗肿瘤活性,其作用机制可能与激活IL-12/NF-κB/STAT-4信号通路有关。
          关键词  胀果甘草多糖;树突状细胞;IL-12/NF-κB/STAT-4信号通路;细胞毒性T淋巴细胞;抗肿瘤

          Effects  and  mechanism  of  Glycyrrhiza  inflata  polysaccharides  on  the  maturation  and  anti-tumor  effect  of
          dendritic cell
          Nadiremu·Xiaokelati ,YU Yongting,LU Yongqiang,ZHOU Zhaoxi,ZHANG Lili,CONG Yuanyuan(College  of
          Pharmacy, Xinjiang Medical University, Urumqi 830011, China)

          ABSTRACT   OBJECTIVE To investigate the effects and mechanism of Glycyrrhiza inflata polysaccharides (GiP) and GiP-B1 on
          the  maturation  and  anti-tumor  effect  of  dendritic  cell (DC).  METHODS  The  immature  DC (imDC)  of  hepatocellular  carcinoma
          cell H22 tumor-bearing mice cultured in vitro were divided into control group, tumor necrosis factor-α (TNF-α) group, GiP group,
          and  GiP-B1  group.  The  viability,  positive  expressions  of  surface  markers (CD11c,  CD80,  CD86,  MHC- Ⅱ),  the  levels  of
          interleukin-12p70 (IL-12p70) and IL-4 in mature DC (mDC) of tumor-bearing mice were detected. mDC and CD4 T lymphocytes
                                                                                                 +
          were co-cultured to generate CD4-cytotoxic T cell (CD4-CTL); stimulation index, the levels of IL-12p70, interferon-γ (IFN-γ),
          IL-4 and IL-10, the killing activity of CD4-CTL to H22 cell were detected. mRNA expressions of IL-12, IL-12 receptor (IL-12R),
          signal  transducer  and  activator  of  transcription-4 (STAT-4),  as  well  as  the  protein  expression  of  IL-12  receptor  β2 (IL-12Rβ2),
          phosphorylation  levels  of  nuclear  factor-kappa  B (NF- κB)  p65  and  STAT-4  proteins  in  mDC  were  detected  after  co-culture.
          RESULTS  Compared  with  the  control  group,  the  viability  of  mDC,  the  positive  expressions  of  MHC-Ⅱ,  and  the  levels  of
          IL-12p70  and  IL-4  were  increased  significantly  in  GiP  group  and  GiP-B1  group (P<0.05).  The  positive  expressions  of  CD11c,
          CD80 and CD86 showed an increasing trend, but the differences were not statistically significant (P>0.05). After co-culturing, the
          stimulation  index,  the  levels  of  IL-12p70  and  IFN-γ  were  significantly  increased (P<0.05),  while  the  levels  of  IL-4  and  IL-10
         (except  for  the  GiP  group)  were  significantly  decreased (P<0.05);  the  cytotoxicity  against  H22  cells  was  significantly  enhanced
         (P<0.05).  mRNA  expressions  of  IL-12  and  IL-12R (except  for  GiP  group)  and  STAT-4,  protein  expression  of  IL-12Rβ2  as  well
          as phosphorylation levels of NF-κB p65 and STAT-4 protein were increased significantly in mDC (P<0.05). CONCLUSIONS GiP
          and  GiP-B1  have  a  good  promoting  effect  on  the  maturation  of  DC  in  tumor-bearing  mice,  effectively  stimulate  CD4 T  cell
                                                                                                        +
                                                             proliferation,  enhance  the  anti-tumor  activity  of  CD4-CTL,
             Δ 基金项目 国家自然科学基金项目(No.81960702);新疆维吾尔
                                                             and  its  mechanism  may  be  related  to  activating  IL-12/NF-κB/
          自治区重点实验室项目(No.XJDX1713)                            STAT-4 signaling pathway.
             *第一作者 硕士。研究方向:活性多糖的开发与应用。E-mail:
          ndrm27@foxmail.com                                 KEYWORDS     Glycyrrhiza  inflata  polysaccharides;  dendritic
             # 通信作者 教授,硕士生导师,博士。研究方向:天然药用资源的                 cell;  IL-12/NF-κB/STAT-4  signaling  pathway;  cytotoxic T
          开发与应用。E-mail:congyyxj@126.com                      lymphocytes; anti-tumor


          中国药房  2024年第35卷第20期                                              China Pharmacy  2024 Vol. 35  No. 20    · 2453 ·
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