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南京中医药大学硕士生以第一作者身份在中科院一区TOP期刊上发表研究

  • 2026-03-26 17:45:15
南京中医药大学硕士生以第一作者身份在中科院一区TOP期刊上发表研究

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南京中医药大学郑仕中教授团队在 advanced science上发表研究,题目为 "Diallyl Trisulfide From Garlic Regulates RAB18 Phase Separation to Inhibit Lipophagy and Induce Cuproptosis in Hepatic Stellate Cells for Antifibrotic Effects”

其研究方向:中医药防治慢性肝病及肿瘤的机制

内容:肝纤维化是一种常见的病理过程,严重危害人类健康,但目前缺乏有效的治疗方法。铜死亡是由铜离子诱导的一种新近发现的细胞死亡形式,通过硫辛酰化蛋白的寡聚化引发细胞毒性应激,或可为肝纤维化提供一种新的治疗策略。然而,铜死亡在肝纤维化中的发生机制尚不清楚。在肝纤维化进展过程中,肝星状细胞被激活、增殖并分泌细胞外基质成分,推动纤维化形成。活化的肝星状细胞还会发生脂噬,即脂滴的降解。研究表明,参与脂质代谢的Ras相关蛋白Rab-18(RAB18)可抑制脂噬,上调肉碱棕榈酰转移酶1A(CPT1A)的表达,并促进二氢硫辛酰胺脱氢酶(DLD)在K320位点的琥珀酰化,从而在肝星状细胞中触发铜死亡。

大蒜来源的化合物二烯丙基三硫醚(DATs)可诱导RAB18发生相分离,并促进线粒体-内质网膜接触结构(MAMs)的形成,从而进一步加速RAB18的相分离。DATs在选择性保护肝细胞的同时,激活了肝星状细胞的铜死亡。干扰RAB18的表达可逆转DATs诱导的脂噬抑制和铜死亡过程。这些发现在原代细胞、人肝星状细胞(LX2)、啮齿类动物模型及临床样本中得到了验证。研究表明,DATs通过靶向RAB18并诱导其发生相分离,进而抑制脂噬并促进铜死亡,这使其成为一种极具前景的肝纤维化治疗策略。

总结:DATs通过靶向RAB18并诱导其发生相分离,成为抑制脂噬、诱导铜死亡的关键调控因子。该研究不仅揭示了RAB18在肝纤维化病理进程中的重要作用,也为评估DATs的治疗效果提供了潜在靶点。鉴于纤维化肝组织中的铜蓄积水平高于正常组织,这一策略为铜死亡机制研究开辟了新方向,并为肝纤维化的临床治疗展现出重要前景。

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  137. /yingpanguazai/ssd/ssd1/www/b.460.net.cn/vendor/topthink/think-template/src/template/driver/File.php ( 2.41 KB )
  138. /yingpanguazai/ssd/ssd1/www/b.460.net.cn/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/b.460.net.cn/runtime/temp/b35eef690f41e64ad9e1c098cfc7d3bc.php ( 11.98 KB )
  140. /yingpanguazai/ssd/ssd1/www/b.460.net.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000955s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001315s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001994s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000539s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001065s ]
  6. SELECT * FROM `set` [ RunTime:0.000473s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001225s ]
  8. SELECT * FROM `article` WHERE `id` = 507438 LIMIT 1 [ RunTime:0.000752s ]
  9. UPDATE `article` SET `lasttime` = 1774829564 WHERE `id` = 507438 [ RunTime:0.008488s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000554s ]
  11. SELECT * FROM `article` WHERE `id` < 507438 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001340s ]
  12. SELECT * FROM `article` WHERE `id` > 507438 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001281s ]
  13. SELECT * FROM `article` WHERE `id` < 507438 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002847s ]
  14. SELECT * FROM `article` WHERE `id` < 507438 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.005204s ]
  15. SELECT * FROM `article` WHERE `id` < 507438 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001865s ]
0.178902s