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IF=14.1!南京中医药大学「多模态AI+中药」37天拿下顶刊AS!木香抗肾纤维化新靶点IQGAP1横空出世

  • 2026-06-02 23:37:51
IF=14.1!南京中医药大学「多模态AI+中药」37天拿下顶刊AS!木香抗肾纤维化新靶点IQGAP1横空出世

肾纤维化是慢性肾脏病(CKD)走向终末期的共同通路,全球超8.4亿人受其影响,但临床上能用的药少得可怜。天然产物是座宝库,可“成分复杂、靶点不明”这顶帽子戴了太多年。

小研今天要拆解的这项研究,直接把这顶帽子扔了。南京中医药大学胡立宏团队搞了个多模态AI症状预测模型TCM‑SPred,从一堆中药里精准捞出木香,再锁定它的活性成分去氢木香内酯(DCL),最后证实DCL直接结合新靶点IQGAP1,掐断CCT3‑Wnt轴,把肾纤维化摁住了。

从投稿到接收只用了37天——审稿人也看嗨了。说白了,这就是一套 “AI指路 → 中药筛选 → 靶点抓捕 → 机制坐实” 的完整闭环,给中药现代化打了个样。

   核心发现   

  • 首创多模态AI模型TCM‑SPred:融合症状语义、PPI网络、双向LSTM+跨模态注意力,预测木香抗肾纤维化,AUC达0.95。

  • 挖出新靶点IQGAP1:在CKD患者肾小管里高表达,跟eGFR负相关,DCL跟它结合亲和力Kd=37.2nM。

  • 新机制IQGAP1‑CCT3‑Wnt轴:DCL不改变IQGAP1的量,而是直接阻断它跟CCT3的蛋白互作,从而抑制Wnt/β‑catenin通路,逆转EMT。

  • 药效比阳性药还猛:DCL(1 mg/kg,口服)在UUO和FA模型里减轻胶原沉积、逆转EMT,效果优于吡非尼酮。

  • 安全、可转化:作用剂量下肝肾没看到毒性,口服暴露量不错。

   研究路线   

逻辑链很清晰:

1. 先建模型: 收集肾纤维化相关症状,融合中药靶点PPI网络,搞出TCM‑SPred,10折交叉验证AUC=0.95。

2. 筛中药: 模型推荐木香评分最高。分离鉴定出主成分去氢木香内酯(DCL)。

3. 看药效: UUO/FA小鼠模型 + TGF‑β1诱导的HK‑2/TCMK‑1细胞,DCL显著改善纤维化。

4. 抓靶点: 用基于活性的化学探针(ABPP)+质谱+CETSA+SPR,把IQGAP1从细胞裂解液里“钓”出来,确认为直接靶点。

5. 找结合位点: LC‑MS/MS + 定点突变,证实DCL共价结合IQGAP1的Cys1534。

6. 挖机制: 转录组 + IP‑MS + PLA + Co‑IP,揭示DCL阻断IQGAP1‑CCT3互作,抑制Wnt通路。

7. 体内敲低验证: 肾小管上皮特异性敲低IQGAP1或CCT3,纤维化明显缓解,轴心机制坐实。

   亮点分析   

1

AI+中药的新范式

TCM‑SPred不仅预测准(真阳率超97%),关键是可复用。别人想筛哪个病的药,换症状数据就能跑。

2

IQGAP1是个全新的抗纤维化靶点

以前没人把IQGAP1跟肾纤维化连起来。团队不仅发现了它,还找到了DCL这个共价抑制剂,Cys1534是“开关”。

3

机制不落俗套

DCL不影响IQGAP1表达,而是直接打乱它跟CCT3的物理结合——这种“蛋白互作阻断剂”的思路,比单纯抑制酶更有选择性。

4

体内药效实打实

口服1 mg/kg就起效,效果还压过了吡非尼酮,这在中药单体里不多见。

   六大关键结果解读   

1

TCM‑SPred模型:木香被AI“选中”

模型10折交叉验证AUC 0.95,真阳性率97.16%。在30个肾纤维化相关症状的评分里,木香综合得分最高,被推荐为首选。

✅ AI不是噱头,是真能从中药堆里挑出对的。

2

DCL:把UUO小鼠的纤维化摁回去了

DCL(1 mg/kg,灌胃)连给12天,肾小管萎缩少了,胶原沉积轻了,E‑Cadherin上调,α‑SMA、VIM、SNAI1下调。吡非尼酮也有效,但DCL更好。

✅ 效果肉眼可见,而且比阳性药强。

3

IQGAP1:DCL的“真命靶点”

SPR测出结合亲和力Kd=37.2 nM,CETSA/SIP显示DCL能稳着IQGAP1不被热变性。用荧光探针Pull‑down,只有DCL组能把IQGAP1拉下来,共定位也证实两者待在一起。

✅ 靶点锁定,证据链闭环。

4

Cys1534:共价结合的那个“钩子”

LC‑MS/MS鉴定出DCL结合在IQGAP1的1533‑TCLDNLASK‑1541肽段上的Cys1534。把这个位点突变成丙氨酸(C1534A),DCL既不结合也没功能了。

✅ 共价结合,一个位点决定生死。

5

DCL拆散IQGAP1‑CCT3这对“搭档”

Co‑IP发现DCL处理后IQGAP1跟CCT3的结合明显减少,PLA原位信号也减弱了。下游Wnt/β‑catenin通路被抑制,EMT逆转。

✅ 不是砍掉蛋白,而是破坏它们的“握手”。

6

敲低IQGAP1或CCT3:纤维化照样减轻

用AAV在肾小管上皮里特异性地敲低IQGAP1或CCT3,UUO小鼠的胶原沉积、EMT、Wnt激活都显著缓解。

✅ 体内反向验证,轴心机制没跑。

   小结   

这篇Advanced Science漂亮的地方,不是堆了多少组学数据,而是把 “临床问题 → AI预测 → 中药筛选 → 靶点发现 → 机制验证 → 体内回证” 这一整条链跑通了。尤其值得借鉴的是:他们用多模态AI让“中药筛选”从经验变成可计算,用化学探针+质谱让“靶点抓捕”不再靠猜,用定点突变+Co‑IP把机制做实到单个氨基酸。

不做复杂基因编辑、不烧钱高通量筛选,照样能发14分。关键是——逻辑闭环,每一步都踩在点上。

作者提示:个人观点,仅供参考。

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  1. CONNECT:[ UseTime:0.000396s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000629s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000250s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000281s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000463s ]
  6. SELECT * FROM `set` [ RunTime:0.000198s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000568s ]
  8. SELECT * FROM `article` WHERE `id` = 560240 LIMIT 1 [ RunTime:0.000405s ]
  9. UPDATE `article` SET `lasttime` = 1780823937 WHERE `id` = 560240 [ RunTime:0.004950s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000264s ]
  11. SELECT * FROM `article` WHERE `id` < 560240 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000431s ]
  12. SELECT * FROM `article` WHERE `id` > 560240 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000396s ]
  13. SELECT * FROM `article` WHERE `id` < 560240 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000695s ]
  14. SELECT * FROM `article` WHERE `id` < 560240 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002961s ]
  15. SELECT * FROM `article` WHERE `id` < 560240 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002486s ]
0.088977s