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BML-111,脂氧素 A 激动剂,可调节 VEGF 或 CoCl 诱导的肿瘤源性内皮细胞迁移、血管生成和通透性。

BML-111, the lipoxin A agonist, modulates VEGF or CoCl-induced migration, angiogenesis and permeability in tumor-derived endothelial cells.

机构信息

Department of Pathology, Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, PR China.

Department of General Medicine, Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, PR China.

出版信息

Immunol Lett. 2021 Feb;230:27-35. doi: 10.1016/j.imlet.2020.12.007. Epub 2020 Dec 26.

Abstract

Tumor angiogenesis plays a vital role in carcinogenesis, cancer progression, and metastasis. Lipoxin A (LXA) is an endogenously-produced family of effective anti-inflammatory with a potent inhibitory effect on angiogenesis. However, BML-111, a LXA agonist, its governing tumor-derived endothelial cells (Td-EC) mechanisms remain unknown. In the present study, we utilized VEGF or CoCl to mimic tumor microenvironment in vitro to study the effect of BML-111 on angiogenesis and permeability of Td-EC, and preliminarily explore its specific mechanism. Data suggested that BML-111 inhibited viability, migration and angiogenesis in VEGF or CoCl-treated Td-EC by modulating MMP2/9-TIMP1, and decreasing the production of HIF-1α and COX-2 level. In addition, we observed that BML-111 inhibited Td-EC permeability induced by VEGF or CoCl, through the stabilization of VE-cadherin/β-catenin-dependent adherens junctions and TRPC1 pathway. Nevertheless, these effects could be blocked by BOC-2 which was the specific inhibitor of FPR2/ALX (the receptor of LXA).These results suggest that BML-111 may have inhibitory effects on VEGF or CoCl-induced migration, angiogenesis and permeability in tumor-derived endothelial cells.

摘要

肿瘤血管生成在致癌作用、癌症进展和转移中起着至关重要的作用。脂氧素 A(LXA)是内源性产生的有效抗炎家族,对血管生成具有很强的抑制作用。然而,LXA 激动剂 BML-111 调控肿瘤衍生内皮细胞(Td-EC)的机制尚不清楚。在本研究中,我们利用 VEGF 或 CoCl 模拟体外肿瘤微环境,研究 BML-111 对 Td-EC 血管生成和通透性的影响,并初步探讨其具体机制。数据表明,BML-111 通过调节 MMP2/9-TIMP1,降低 HIF-1α 和 COX-2 水平,抑制 VEGF 或 CoCl 处理的 Td-EC 的活力、迁移和血管生成。此外,我们观察到 BML-111 通过稳定 VE-cadherin/β-catenin 依赖性黏附连接和 TRPC1 途径,抑制由 VEGF 或 CoCl 诱导的 Td-EC 通透性。然而,这些作用可以被 BOC-2 阻断,BOC-2 是 FPR2/ALX(LXA 的受体)的特异性抑制剂。这些结果表明,BML-111 可能对 VEGF 或 CoCl 诱导的肿瘤衍生内皮细胞迁移、血管生成和通透性具有抑制作用。

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