转胺酶2通过血管内皮生长因子受体2通道调节炎症血管生成,用于炎症性肠病
Gaoshi Zhou1, Mudan Zhang1, Shuhui Zheng2
1Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, PR China.
转胺酶2 (TGM2) 在炎症性肠病 (IBD) 中驱动炎症性血管生成. 准TGM2对治疗IBD相关的血管改造有前途,并作为诊断生物标志物.
科学领域:
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
- 血管生物学 血管生物学
背景情况:
- 炎症性血管生成是炎症性肠病 (IBD) 病原体的核心.
- 驱动这个过程的精确分子机制仍然不完全理解.
- 转氨酶2 (TGM2) 被研究为潜在的关键参与者.
研究的目的:
- 阐明转胺酶2 (TGM2) 在IBD内的炎症性血管生成中的作用.
- 评估TGM2作为IBD的潜在治疗点.
- 评估TGM2作为IBD活动的诊断生物标志物.
主要方法:
- 集成的RNA测序和单细胞转录组分析IBD活检.
- 使用人类肠道微血管内皮细胞 (HIMECs) 的体外研究和使用Tgm2淘汰赛小鼠的体内研究.
- 酶相关免疫吸收试验 (ELISA) 用于血清TGM2水平的量化.
主要成果:
- 在IBD患者和大肠炎模型的肠内皮细胞中,TGM2的表达显著升高.
- 在小鼠中,Tgm2淘汰和抑制减少了结肠炎和血管生成;TGM2淘汰损害了HIMEC功能.
- STAT1的激活可提高TGM2的调节,TGM2与VEGFR2相互作用,促进酸化和血管生成.
- 血清TGM2水平准确预测克罗恩病中的内学活性 (AUC=0.862).
结论:
- STAT1-TGM2-VEGFR2轴对于调节肠道炎症中的血管生成至关重要.
- 准TGM2代表了在慢性肠道炎症中血管重塑的有前途的治疗策略.
- TGM2有可能成为评估IBD活动的有价值生物标志物.
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