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Tumor perivascular cell-derived extracellular vesicles promote angiogenesis via the Gas6/Axl pathway.

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机构: [1]Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou, 510632, PR China [2]Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou, 510632, PR China [3]The First Affiliated Hospital, Jinan University, Guangzhou, 510632, PR China [4]The Sixth Affiliated Hospital, Sun Yet-sen University, Guangzhou, 510655, PR China [5]Formula-Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, 510632, PR China [6]MOE Key Laboratory of Tumor Molecular Biology, Clinical Translational Center for Targeted Drug, Department of Pharmacology, School of Medicine, Jinan University, Guangzhou, 510632, PR China
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关键词: Perivascular cells Extracellular vesicles Colorectal cancer Angiogenesis

摘要:
Aberrant angiogenesis is a hallmark of cancer and is critically associated with tumor progression. Perivascular cells are essential components of blood vessels, and the role of tumor perivascular cell-derived extracellular vesicles (TPC-EVs) in angiogenesis remains elusive. In the present study, using genetic mouse models and pharmacological inhibitors, we found that ablation of perivascular cells inhibited angiogenesis in allografted colorectal cancer tumors. Further studies demonstrated that TPC-EVs promoted the proliferation, migration, invasion, viability, and tube formation of HUVECs. They also facilitated vessel spouting in rat aortic rings and induced neovascularization in chick chorioallantoic membranes (CAMs). Silencing of Gas6 or blockade of the Axl pathway suppressed TPC-EV-induced angiogenesis in vitro and ex vivo. Moreover, inhibition of the Gas6/Axl signaling pathway impaired TPC-EV-mediated angiogenesis in vivo. Our findings present a deeper insight into the biological functions of TPCs and TPC-EVs in tumor angiogenesis and demonstrate that TPC-EV-derived Gas6 could be an attractive and innovative regulator of tumor angiogenesis.Copyright © 2021 Elsevier B.V. All rights reserved.

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出版当年[2021]版:
大类 | 1 区 医学
小类 | 2 区 肿瘤学
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大类 | 1 区 医学
小类 | 2 区 肿瘤学
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Q1 ONCOLOGY
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Q1 ONCOLOGY

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第一作者机构: [1]Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou, 510632, PR China [2]Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou, 510632, PR China
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