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IF14.1!南京中医药大学副校长拿下双一区TOP!“中药+多模态AI”超详细思路分析!

  • 2026-05-09 12:18:58
IF14.1!南京中医药大学副校长拿下双一区TOP!“中药+多模态AI”超详细思路分析!

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引言

恭喜!南京中医药大学团队登顶《Advanced Science》:AI筛出中药DCL,靶向IQGAP1强效抑制肾纤维化!

肾纤维化影响全球超8.4亿患者,却缺乏有效治疗药物。传统中药木香虽有记载,但其活性成分和机制长期不明。

🔶为破解这一难题,团队开发了多模态AI模型TCM-SPred,精准预测出木香主成分去氢木香内酯(DCL)。实验证实DCL直接结合IQGAP1,阻断CCT3-Wnt信号轴,逆转肾纤维化,效果优于临床药物。

文献解读

文章题目多模态人工智能驱动下鉴定去氢木香内酯为靶向IQGAP1的强效肾纤维化缓解剂

发表期刊Advanced Science

发表时间:2026年4月

影响因子:IF14.1

研究背景

肾纤维化是慢性肾脏病的主要病变,现有疗法有限。中药天然产物虽有潜力,但疗效与机制尚不明确。 因此,研究者利用多模态人工智能模型(TCM-SPred)来高效筛选抗肾纤维化的天然药物。

研究方法

    • AI模型预测:构建多模态AI模型(TCM-SPred),预测出木香及其主成分去氢木香内酯(DCL) 可抗肾纤维化。

    • 药效验证:在动物(UUO、FA模型)和细胞(TGF-β1诱导)实验中,DCL口服给药能显著减轻肾纤维化与EMT。

    • 靶点与机制:DCL直接结合IQGAP1(Cys1534位点),阻断其与CCT3的相互作用,从而抑制Wnt信号通路,缓解纤维化。

    图1:TCM-SPred架构

    研究结果

    1.发现木香的抗纤维化潜力

    10折交叉验证平均AUC达0.9518,真阳性率超97%,证明模型出色的鲁棒性。TCM-SPred预测木香以13.68分最高评分位居榜首【图2A-C】。

    深入分析显示木香对30个肾纤维化症状中的14个排名第一、12个排名第二,具有广谱且均衡的症状覆盖能力【图2D】。

    图2:通过TCM-SPred预测系统揭示木香的潜在抗肾纤维化活性

    2.DCL的体外抗纤维化机制

    免疫荧光显示DCL剂量依赖性抑制TGFβ1诱导的α-SMA上调。Western blot证实DCL恢复E-Cadherin、降低VIM、α-SMA和SNAI1【图3A-B】。

    qRT-PCR验证DCL逆转EMT、炎症和纤维化基因转录【图3C】。效应在鼠源TCMK-1细胞复现,证明种属保守性【图3D-E】。

    图3:DCL缓解TGFβ1诱导的肾小管上皮细胞纤维化

    3.DCL的体内治疗效果

    UUUO小鼠中DCL 0.1-10 mg/kg剂量依赖性减轻肾萎缩、胶原沉积,上调E-Cadherin、下调α-SMA等EMT标志物【图4A-E】。

    治疗性给药(术后4/8天启动)效果优于吡非尼酮【图4F-I】,叶酸模型中同样改善肾损伤

    图4:DCL体内缓解肾纤维化

    4.靶点发现:DCL直接结合IQGAP1

    设计三种探针,Probe-DCL-1活性最强【图5A-B】。质谱鉴定334个蛋白,IQGAP1热稳定性增强最显著【图5C】。

    SPR测得Kd=37.2 nM,CETSA证实DCL增强IQGAP1热稳定性【图5E-G】,竞争结合及SIP佐证直接结合【图5F-I】

    图5:DCL直接靶向IQGAP1

    5.IQGAP1在肾纤维化中的病理作用

    CKD患者IQGAP1 mRNA显著升高且与eGFR负相关,人纤维化组织及UUO小鼠IQGAP1蛋白均高表达【图6A-F】。
    敲低IQGAP1模拟DCL效应,抑制EMT标志物【图6G-I】;过表达则拮抗DCL保护作用【图6J-L】,证实IQGAP1是DCL关键靶点
    图6:DCL与肾纤维化进展相关

    6.结合位点:Cys1534

    LC-MS/MS发现肽段1533-TCLDNLASK-1541分子量增加230.13 Da【图7A,B】。分子对接预测迈克尔加成结合Cys1534【图7C】。

    C1534A突变后DCL不增强热稳定性,pull-down效率降低,EMT抑制作用削弱【图7D-G】,锁定Cys1534为特异性结合位点

    图7:DCL在IQGAP1上的结合位点定位

    7.孤立饲养下GluA1回补仍增强T细胞应答

    转录组显示IQGAP1敲低最显著抑制Wnt信号【图8A,B】。DCL与IQGAP1敲低均下调Wnt靶基因,过表达则激活Wnt并抵消DCL效应【图8C-H】。

    图8:IQGAP1抑制Wnt信号通路

    IP-MS发现CCT3是DCL处理后解离最显著的蛋白【图9A,B】。DCL阻断IQGAP1-CCT3结合,C1534A突变消除此效应【图9E-G】。

    CCT3敲低抑制EMT和Wnt【图9H-L】,揭示DCL通过阻断IQGAP1-CCT3互作抑制Wnt信号轴。

    图9:DCL阻断IQGAP1与CCT3的相互作用,抑制Wnt信号通路异常激活,改善肾纤维化进展

    8.遗传学验证

    AAV9介导肾小管特异性敲低:IQGAP1敲低减轻小管扩张和胶原沉积,抑制EMT和Wnt,与DCL联用无额外获益【图10A-H】。

    CCT3敲低同样改善病理和分子标志物,抑制Wnt【图10I-P】,遗传学验证IQGAP1-CCT3轴是DCL体内作用靶点

    图10:特异性敲低IQGAP1或CCT3抑制小鼠肾纤维化

    文章小结

    南京中医药大学团队开发AI模型TCM-SPred,预测木香抗肾纤维化活性最强。验证活性成分DCL以37.2 nM亲和力靶向IQGAP1,通过阻断IQGAP1-CCT3互作抑制Wnt通路,动物模型效果优于上市药物

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    1. CONNECT:[ UseTime:0.001158s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
    2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.002136s ]
    3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000721s ]
    4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000635s ]
    5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001537s ]
    6. SELECT * FROM `set` [ RunTime:0.000607s ]
    7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.002127s ]
    8. SELECT * FROM `article` WHERE `id` = 538613 LIMIT 1 [ RunTime:0.016890s ]
    9. UPDATE `article` SET `lasttime` = 1779622821 WHERE `id` = 538613 [ RunTime:0.018586s ]
    10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000796s ]
    11. SELECT * FROM `article` WHERE `id` < 538613 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001314s ]
    12. SELECT * FROM `article` WHERE `id` > 538613 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001518s ]
    13. SELECT * FROM `article` WHERE `id` < 538613 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.011821s ]
    14. SELECT * FROM `article` WHERE `id` < 538613 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.008318s ]
    15. SELECT * FROM `article` WHERE `id` < 538613 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.035446s ]
    0.276674s