当前位置:首页>南京>中药复方高分模板!南京中医药大学揭示黄连温胆汤抗抑郁密码!肠脑轴PPAR-α/Allo通路显奇效,双护脑肠屏障

中药复方高分模板!南京中医药大学揭示黄连温胆汤抗抑郁密码!肠脑轴PPAR-α/Allo通路显奇效,双护脑肠屏障

  • 2026-07-13 15:13:28
中药复方高分模板!南京中医药大学揭示黄连温胆汤抗抑郁密码!肠脑轴PPAR-α/Allo通路显奇效,双护脑肠屏障

抑郁症已成为全球致残的首要原因,影响超2.8亿人。现有选择性5-羟色胺再摄取抑制剂(SSRIs)存在起效慢、有效率不足30%、副作用明显等局限,迫切需要开发机制新颖的治疗药物。黄连温胆汤(HLWD)是清代经典名方,临床广泛用于治疗痰热型抑郁、失眠等情志疾病,但其确切分子机制长期未被阐明。

本研究由南京中医药大学陶伟伟教授等发表于期刊Phytomedicine,首次系统揭示了黄连温胆汤抗抑郁的肠脑轴作用机制:HLWD通过直接激活肠道PPAR-α受体,上调"内源性镇静剂"别孕烷醇酮(Allo)的合成与入脑,同时增强海马神经发生、修复肠道黏膜屏障,双维度改善抑郁样行为。

标题:Huanglian Wendan Ameliorates Depression via Gut-Brain Axis-Related PPAR-α/Allo Pathways

译名:黄连温胆汤通过肠脑轴相关 PPAR-α/ 别孕烷醇酮通路改善抑郁症

期刊:Phytomedicine

通讯作者:Fan Zhao、Xiaolan Cheng、 Weiwei Tao

友情提示:文末可获取文献的DOI号哦~或者关注我们,主页回复“999”直接后台获取原文!文献编号:ME2026.6.2

研究思路

  1. 研究首先建立慢性社会挫败应激(CSDS)抑郁小鼠模型,通过4项经典行为学实验验证HLWD的抗抑郁效果;
  2. 脑和肠两个维度,系统分析HLWD对海马神经发生、突触功能及肠道屏障完整性的影响;
  3. 通过结肠转录组测序锁定核心调控通路PPAR-α;
  4. 利用PPAR-α特异性拮抗剂GW6471进行功能回救实验,验证靶点必要性;
  5. 最后通过分子对接微量热泳动技术(MST),鉴定出HLWD中直接结合PPAR-α的活性成分。

文章主要内容

一、HLWD显著改善CSDS小鼠抑郁样行为

UPLC分析鉴定出HLWD中42种主要成分,包括黄酮类、生物碱类和香豆素类(Fig1)。

Fig1

在CSDS抑郁模型中,HLWD呈剂量依赖性改善小鼠的抑郁样行为:

  • 糖水偏好实验显示,高剂量HLWD可使小鼠蔗糖偏好率从模型组的42.3%恢复至78.6%(Fig2B);

  • 悬尾实验中,小鼠不动时间缩短47.2%(Fig2C);

  • 旷场实验和社交互动实验证实,HLWD显著增加小鼠的中心区域停留时间和社交互动评分(Fig2D-H),效果与阳性药艾司西酞普兰相当。

Fig2

二、双管齐下:增强海马神经发生+保护肠道黏膜屏障

机制研究发现,HLWD同时作用于脑和肠两个器官:

  • 中枢层面:HLWD显著降低海马区促炎因子IL-1β、TNF-α水平,升高抗炎因子IL-10、IL-4水平(Fig3A-D);抑制小胶质细胞过度激活,增加其分支复杂度(Fig3I-K);上调突触蛋白PSD95和α-突触核蛋白表达(Fig3E-G);促进海马神经发生,新生神经元的树突长度和分支数显著增加(Fig3L-N)。

Fig3

  • 外周层面:HLWD修复CSDS诱导的肠道黏膜损伤,增加杯状细胞数量和黏液层厚度(Fig4A-D);上调肠道紧密连接蛋白Occludin和ZO-1的表达(Fig4K-P);降低肠道炎症水平,恢复肠道屏障功能(Fig4E-J)。

Fig4

三、转录组锁定核心通路:PPAR-α/别孕烷醇酮轴

结肠转录组测序显示,HLWD处理后差异基因显著富集于PPAR信号通路(Fig5E-F)。进一步验证发现:

  • HLWD显著上调结肠组织中PPAR-α的蛋白和mRNA表达(Fig6A-C),但对海马区PPAR-α表达无影响;

  • 同时,HLWD显著升高结肠、血清和海马中别孕烷醇酮(Allo)的水平(Fig6D-H);

  • 别孕烷醇酮通过抑制海马TLR4/MyD88/NF-κB炎症通路,发挥神经保护作用(Fig6I-N)。

这表明HLWD通过激活肠道PPAR-α,促进别孕烷醇酮的合成并通过血液循环进入大脑,从而发挥中枢抗抑郁作用

Fig6

四、拮抗剂验证:PPAR-α是HLWD抗抑郁的必需靶点

为验证PPAR-α的核心作用,研究使用PPAR-α特异性拮抗剂GW6471进行回救实验。结果显示:

  • GW6471完全逆转了HLWD的抗抑郁效果,小鼠再次出现明显的社交回避和快感缺失(Fig7A-G);

  • 同时,GW6471阻断了HLWD对海马神经发生的促进作用和对小胶质细胞激活的抑制作用(Fig8A-F);

  • 降低了结肠、血清和海马中别孕烷醇酮的水平(Fig8G-I);

  • 加重了肠道黏膜屏障损伤(Fig9A-J)。

这些结果明确证明,PPAR-α是HLWD发挥抗抑郁作用的必需和核心靶点。

Fig7

Fig8

Fig9

五、分子对接+MST:鉴定出直接结合PPAR-α的活性成分

通过分子对接和微量热泳动技术(MST),研究从HLWD的42种成分中筛选出3个与PPAR-α具有高亲和力的活性成分:

  • 异甘草素(Kd=2.901μM)
  • 甘草苷芹糖苷(Kd=11.53μM)
  • 柚皮苷-7-芸香糖苷(Kd=22.87μM)

这些成分可直接结合PPAR-α的活性口袋,作为天然PPAR-α激动剂发挥作用。

文章总结

本研究实现了三大核心突破:

  1. 首次阐明经典名方黄连温胆汤的抗抑郁分子机制:揭示了"肠道PPAR-α激活→别孕烷醇酮入脑→抑制神经炎症→改善抑郁"的完整肠脑轴信号通路;

  2. 发现PPAR-α是抗抑郁治疗的新靶点:为开发起效更快、副作用更小的新型抗抑郁药物提供了方向;

  3. 突破传统认知:证实HLWD的抗抑郁作用不依赖于肠道菌群重塑,而是通过直接作用于宿主PPAR-α受体发挥效应,为中药作用机制研究提供了新思路。

此外,本研究鉴定出的多个天然PPAR-α激动剂,为中药的质量控制和现代化开发提供了科学依据。

看到这里麻烦点个推荐吧♥^-^

DOI:10.1016/j.phymed.2026.158332

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  1. CONNECT:[ UseTime:0.000769s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001508s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000799s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000818s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001420s ]
  6. SELECT * FROM `set` [ RunTime:0.000712s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001614s ]
  8. SELECT * FROM `article` WHERE `id` = 575691 LIMIT 1 [ RunTime:0.002401s ]
  9. UPDATE `article` SET `lasttime` = 1784156750 WHERE `id` = 575691 [ RunTime:0.005958s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.006893s ]
  11. SELECT * FROM `article` WHERE `id` < 575691 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001194s ]
  12. SELECT * FROM `article` WHERE `id` > 575691 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001488s ]
  13. SELECT * FROM `article` WHERE `id` < 575691 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.017418s ]
  14. SELECT * FROM `article` WHERE `id` < 575691 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.005443s ]
  15. SELECT * FROM `article` WHERE `id` < 575691 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.014407s ]
0.145374s