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·药学研究·
苦参醇 F 调节肠道菌群及免疫应答对溃疡性结肠炎小鼠的改善
作用机制研究
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何旭东 ,宋成竹,倪皓雨,胡蕴铠,李 敏,陈达俊,苏文涛,俞 捷,杨兴鑫(云南中医药大学中药学院,昆明
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650500)
中图分类号 R966 文献标志码 A 文章编号 1001-0408(2024)17-2088-08
DOI 10.6039/j.issn.1001-0408.2024.17.06
摘 要 目的 探究苦参醇F(KSCF)治疗溃疡性结肠炎(UC)小鼠的作用机制。方法 采用网络药理学与分子对接预测KSCF干
预 UC 的潜在靶点。将 C57BL/6J 小鼠按体重分为模型组、阳性对照组(柳氮磺胺吡啶,703 mg/kg)、KSCF 组(100 mg/kg )和正常
组,每组6只;采用饮用葡聚糖硫酸钠溶液的方法建立小鼠UC模型;造模期间灌胃给药,每天1次,连续7 d。末次给药后,对小鼠
疾病活动指数(DAI)进行评分;测量小鼠结肠长度;观察小鼠结肠组织病理形态学变化;检测小鼠血清中脂多糖(LPS)及结肠中髓
过氧化物酶(MPO)、一氧化氮(NO)和超氧化物歧化酶(SOD)水平;检测小鼠结肠组织中闭合蛋白(occludin)、紧密连接蛋白 1
(ZO-1)表达水平;检测小鼠脾脏中CD3 T、CD4 T、CD8 T淋巴细胞比例及CD4 /CD8 值变化;采用16S rDNA测序法分析结肠微生
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物变化。结果 网络药理学结果显示,KSCF可能调节磷脂酰肌醇3激酶/蛋白激酶B、核因子κB(NF-κB)等信号通路治疗UC。分
子对接结果表明,KSCF与NF-κB p65蛋白结合最稳定。动物实验结果表明,与模型组比较,KSCF组小鼠结肠组织病理形态学特
征得到改善;DAI评分、血清LPS水平、结肠组织中MPO及NF-κB p65磷酸化和NLRP3蛋白表达水平、脾脏中CD8 T淋巴细胞比
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例显著降低(P<0.05);小鼠体重,结肠组织中SOD水平、occludin和ZO-1表达水平,脾脏中CD3 T、CD4 T淋巴细胞比例及CD4 / +
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CD8 值显著升高(P<0.05);肠道中厚壁菌门、放线菌门、阿克曼氏菌属和乳酸杆菌属丰度增加,变形菌门丰度减少,菌群结构向正
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常组趋近。结论 KSCF通过修复肠道微生态失调、增强免疫应答来抑制结肠炎症反应,改善肠屏障完整性来缓解UC。
关键词 苦参醇F;溃疡结肠炎;免疫应答;肠道菌群;炎症;氧化应激;16S rDNA测序
Improvement mechanism study of kushenol F on ulcerative colitis mice by regulating gut microbiota and
immune response
HE Xudong,SONG Chengzhu,NI Haoyu,HU Yunkai,LI Min,CHEN Dajun,SU Wentao,YU Jie,YANG Xingxin
(College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming 650500, China)
ABSTRACT OBJECTIVE To explore the action mechanism of kushenol F (KSCF) in treating ulcerative colitis (UC) in mice.
METHODS The potential targets of KSCF intervening in UC were predicted with network pharmacology and molecular docking.
C57BL/6J mice were randomly divided by body weight into model group, positive control group (sulfasalazine, 703 mg/kg),
KSCF group (100 mg/kg), and normal group, with 6 mice per group. The UC model of mice was induced by dextran sulfate
sodium solution. During the modeling period, the mice were given relevant medicine intragastrically, once a day, for 7 consecutive
days. After the last administration, the disease activity index (DAI) of the mice was scored; the length of the mice’s colon was
measured; pathological changes in the colon tissue of mice were observed; the levels of lipopolysaccharide (LPS) in serum,
myeloperoxidase (MPO), nitric oxide (NO) and superoxide dismutase (SOD) in the colon were detected in mice; the expression
levels of occludin and ZO-1 in colon tissue of mice were detected; the proportions of CD3 T, CD4 T, and CD8 T lymphocytes in
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the spleen and the ratio of CD4 /CD8 were detected; changes in colonic microbiota were analyzed by 16S rDNA sequencing.
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RESULTS Results of network pharmacology indicated that KSCF may treat UC by regulating signaling pathways such as
phosphatidylinositol-3 kinase/protein kinase B (PI3K/AKT)
Δ 基金项目 国家自然科学基金项目(No.82104381,No.82060707);
and nuclear factor kappa B (NF- κB). Molecular docking
云南省南药可持续利用研究重点实验室科技人才和平台计划项目
results showed that KSCF bound most stably with NF-κB p65
(No.202105AG070012XS2204);云南省教育厅科学研究基金项目
protein. Animal experiment results demonstrated that,
(No.2024Y385)
*第一作者 博士研究生。研究方向:中药药效物质分析。E- compared with the model group, the pathological
mail:2758251701@qq.com characteristics of colon tissue in mice were improved in KSCF
# 通信作者 教授,博士生导师。研究方向:中药药效物质分析。 group. DAI scores, serum levels of LPS, the levels of MPO,
E-mail:yxx78945@163.com NF-κB p65 phosphorylation and NLRP3 protein expression in
· 2088 · China Pharmacy 2024 Vol. 35 No. 17 中国药房 2024年第35卷第17期