当前位置:首页>南京>南京大学医学院附属口腔医院|闫福华/童昕/张倩|细胞内囊泡在LAMA4介导的YAP/TAZ信号通路中超越细胞外囊泡用于炎症性骨缺损再生修复的应用

南京大学医学院附属口腔医院|闫福华/童昕/张倩|细胞内囊泡在LAMA4介导的YAP/TAZ信号通路中超越细胞外囊泡用于炎症性骨缺损再生修复的应用

  • 2026-05-09 10:51:31
南京大学医学院附属口腔医院|闫福华/童昕/张倩|细胞内囊泡在LAMA4介导的YAP/TAZ信号通路中超越细胞外囊泡用于炎症性骨缺损再生修复的应用

1.文献信息

2026年3月,南京大学医学院附属口腔医院闫福华童昕张倩《Journal of Extracellular Vesicles》【IF14.5,中科院一区,Q1】杂志在线发表题名为“Application of Intracellular Vesicles Surpass Extracellular Vesicles in Regenerative Repair of Inflammatory Bone Defects via the LAMA4-Mediated YAP/TAZ Signalling”细胞内囊泡在LAMA4介导的YAP/TAZ信号通路中超越细胞外囊泡用于炎症性骨缺损再生修复的应用的研究论文。
南京大学医学院附属口腔医院张倩为论文的第一通讯作者,南京大学医学院附属口腔医院副院长闫福华南京大学医学院附属口腔医院种植科主任童昕为论文的共同通讯作者。

2.文献摘要

牙周炎诱导的炎症微环境会损害牙周韧带干细胞(PDLSCs)的功能,并显著阻碍牙周组织再生。与此同时,细胞外囊泡(EVs)的临床应用受限于其低产量和高生产成本。本研究首次系统比较了源自人牙周韧带干细胞(hPDLSCs)的细胞内囊泡(IVs)与EVs在炎症条件下促进骨再生的功能差异,并阐明了其潜在分子机制。IVs的制备效率较EVs高6.9倍,且表现出更优的细胞摄取能力。体外实验中,在脂多糖(LPS)诱导的炎症环境中,IVs在促进hPDLSCs增殖、抑制促炎细胞因子(IL-6和 TNF - α)分泌、通过Yes相关蛋白(YAP)/ PDZ 结合基序转录共激活因子(TAZ)激活上调成骨标志物表达(从而促进钙结节形成)方面均优于EVs。蛋白质组学与功能分析证实层粘连蛋白亚基α4(LAMA4)是IVs中富集的关键效应分子,对激活YAP/TAZ信号通路及成骨过程至关重要。相应地,在体内实验中,负载IVs的凝胶有效促进了大鼠牙周骨缺损模型的骨再生,且未观察到器官毒性。本研究证实静脉注射(IVs)是一种高效、高产率的无细胞治疗方案,并通过YAP/TAZ激活机制阐明了LAMA4依赖性在炎症性骨再生中的作用机制。

3.研究内容

图1 来自hPDLSCs的EVs与IVs的表征分析

图2 IVs在LPS诱导的炎症条件下对hPDLSCs表现出更优的抗炎和成骨效应。

图3 IVs负载凝胶增强牙周缺损大鼠的骨再生能力
图4 炎症环境中IVs与EVs处理的人牙周膜干细胞(hPDLSCs)的比较转录组学分析
图5 YAP/TAZ的激活在静脉注射剂(IVs)的促骨形成效应中起关键作用。

图6 IVs与EVs的比较蛋白质组学分析

图7 LAMA4通过YAP/TAZ激活介导静脉注射剂的促骨形成效应

综合来看,本研究首次证实人牙周膜干细胞(hPDLSCs)来源的间充质诱导血管(IVs)在减轻炎症反应和促进炎症条件下成骨作用方面优于外泌体(EVs)。其作用机制涉及LAMA4的递送及通过整合素结合激活YAP/TAZ信号通路,这可能代表牙周炎症性骨再生中一种新型机械信号转导途径。这些发现共同确立了IVs作为牙周再生治疗新策略的前景,同时也为机械信号在调控干细胞命运中的作用提供了新见解。

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  1. CONNECT:[ UseTime:0.000436s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000662s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.003891s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.002656s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000666s ]
  6. SELECT * FROM `set` [ RunTime:0.000263s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000536s ]
  8. SELECT * FROM `article` WHERE `id` = 534991 LIMIT 1 [ RunTime:0.003556s ]
  9. UPDATE `article` SET `lasttime` = 1778481501 WHERE `id` = 534991 [ RunTime:0.004212s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000668s ]
  11. SELECT * FROM `article` WHERE `id` < 534991 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000415s ]
  12. SELECT * FROM `article` WHERE `id` > 534991 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.004539s ]
  13. SELECT * FROM `article` WHERE `id` < 534991 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001749s ]
  14. SELECT * FROM `article` WHERE `id` < 534991 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.003249s ]
  15. SELECT * FROM `article` WHERE `id` < 534991 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004743s ]
0.109991s