Endothelial cells induce degradation of ECM through enhanced secretion of MMP14 carried on extracellular vesicles in venous malformation

Endothelial cells induce degradation of ECM through enhanced secretion of MMP14 carried on extracellular vesicles in venous malformation
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静脉畸形中内皮细胞通过增强细胞外囊泡上携带的 MMP14 的分泌来诱导 ECM 降解

DOI:
10.1007/s00441-022-03657-2
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发表时间:
2022-07
影响因子:
3.6
通讯作者:
Gang Chen
Gang Chen
中科院分区:
生物学3区
文献类型:
--
作者:
Gao-Hong Chen;Jie-Gang Yang;Hou-Fu Xia;Lin-Zhou Zhang;Yin-Hsueh Chen;Kui-Ming Wang;Xu Duan;Lian-Zhi Wu;Yi-Fang Zhao;Gang Chen

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静脉畸形是最常见的发育性血管畸形,其特征为局部静脉扩张。异常组织的血管周围细胞外基质(ECM)是VM的突出病理标志之一,占血管功能障碍。虽然以前的研究已经揭示了各种蛋白质参与ECM重塑,但内皮-ECM相互作用的详细模式和分子机制尚未完全阐明。我们先前的研究显示VM病变中细胞外囊泡(EV)分泌显著升高。在这里,我们确定了增加的EV携带MMP 14病变液VM和TIE 2-L914 F突变内皮细胞(EC)的培养基,沿着更强的ECM降解。RAB 27 A是囊泡对接和融合所需的调节因子,其敲低导致EV携带的MMP 14在体外分泌减少。组织化学分析进一步证明内皮中的RAB 27 A与血管周围环境中的MMP 14之间高度正相关。因此,我们的研究结果证明,RAB 27 A调节的EV-MMP 14的分泌,作为一种新的模式的内皮细胞-ECM相互作用,有助于通过促进ECM降解VM的发展。
Venous malformations (VMs), featuring localized dilated veins, are the most common developmental vascular anomalies. Aberrantly organized perivascular extracellular matrix (ECM) is one of the prominent pathological hallmarks of VMs, accounting for vascular dysfunction. Although previous studies have revealed various proteins involved in ECM remodeling, the detailed pattern and molecular mechanisms underlying the endothelium-ECM interplay have not been fully elucidated. Our previous studies revealed drastically elevated extracellular vesicle (EV) secretion in VM lesions. Here, we identified increased EV-carried MMP14 in lesion fluids of VMs and culture medium of TIE2-L914F mutant endothelial cells (ECs), along with stronger ECM degradation. Knockdown ofRAB27A, a required regulator for vesicle docking and fusion, led to decreased secretion of EV-carried MMP14 in vitro. Histochemical analysis further demonstrated a highly positive correlation between RAB27A in the endothelium and MMP14 in the perivascular environment. Therefore, our results proved that RAB27A-regulated secretion of EV-MMP14, as a new pattern of endothelium-ECM interplay, contributed to the development of VMs by promoting ECM degradation.
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