D-2-基酸盐调节人类大脑血管内皮细胞的增殖和屏障功能
Chuan Cao1,2, Lingjun Zhang2, Mia D Sorensen3,4
1Department of Hematology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Journal of neuropathology and experimental neurology
|September 23, 2023
概括
突变的异酸盐脱酶 (IDH) 基因产生D-2-基酸盐 (D-2HG),降低瘤血管密度并损害内皮细胞功能,影响瘤微环境.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 异酸盐脱酶 (IDH) 基因的功能获取突变导致过度的 (D) -2-基酸盐 (D-2HG) 生产.
- D-2HG影响瘤细胞表观遗传和周围的非癌细胞,但其对瘤微环境中的内皮细胞的膜作用尚不清楚.
研究的目的:
- 为了研究D-2HG对瘤微环境中的内皮细胞的膜效应.
- 为了确定D-2HG是否会影响星细胞瘤中的微血管密度和内皮屏障功能.
主要方法:
- 在高度星细胞质瘤中使用免疫组织化学量化微血管密度.
- 在内皮细胞上对D-2HG进行了ex vivo实验,以评估迁移,伤口愈合和管道形成.
- 评估了D-2HG对内皮屏障功能的影响,包括透性和T细胞外内皮迁移.
主要成果:
- 在IDH突变性质瘤中,微血管密度降低.
- D-2HG抑制了内皮细胞的增殖,迁移,伤口愈合和管形成,可能通过mTOR/STAT3途径.
- D-2HG通过增加结节蛋白表达,降低透性和T细胞扩散来增强内皮膜屏障功能.
结论:
- D-2HG 降低了内血管密度,并在天体细胞瘤中损害了内皮屏障功能.
- 这些发现表明D-2HG会影响瘤血管微环境,并可能导致抗血管性疗法的耐药性.
- 将IDH抑制与抗血管原或免疫学方法相结合可能是一个有前途的治疗策略.
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