通过放大VEGF-C介导的AKT通路,AXL促进淋巴血管生成
Sébastien Pirson1, Marine Gautier-Isola1, Louis Baudin1
1Laboratory of Tumor and Development Biology, GIGA-Cancer, Liege University, Liege, Belgium.
Cellular and molecular life sciences : CMLS
|February 26, 2025
概括
氨酸激酶受体AXL通过通过VEGF-C/AKT通路促进内皮细胞迁移来增强淋巴血管的形成. 向AXL可以通过控制淋巴结中的淋巴血管生成来抑制转移.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 淋巴细胞生成,新淋巴血管的形成,对于癌症转移至关重要.
- 了解淋巴结内的淋巴血管生成是开发抗转移策略的关键.
- 特定分子通路在淋巴结淋巴血管生成中的作用仍然是活跃的研究领域.
研究的目的:
- 调查前所未知的氨酸激酶受体AXL在淋巴血管形成中的作用.
- 阐明AXL影响淋巴结内淋巴细胞生成的分子机制.
- 通过调节淋巴细胞生成来确定抑制癌症转移的潜在治疗标.
主要方法:
- 在淋巴内皮细胞 (LEC) 中验证的AXL表达.
- 利用RNA干扰和药理抑制 (R428/Bemcentinib) 来研究AXL功能.
- 研究了通过血管内皮生长因子C (VEGF-C) 和下游AKT信号的AXL激活.
- 在体内使用VEGF-C诱导的淋巴结淋巴细胞形成模型评估了AXL的作用.
主要成果:
- 在2D和3D文化中,AXL显著促进了LEC迁移.
- AXL激活是由VEGF-C诱导的,并通过AKT通路发出信号.
- 药理上抑制AXL可以在体内减少淋巴血管生成.
- 在转移条件下,AXL主要以MARCO+LEC表达,密度和透率增加.
结论:
- AXL是一种强大的淋巴血管生成增强剂,通过VEGF-C/AKT信号轴运行.
- 在特定的LEC亚群 (MARCO+) 中,AXL表达与转移性疾病有关.
- 向AXL是一个潜在的策略,通过破坏淋巴结淋巴血管生成来抑制转移.
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