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TGFBR2通过METTL14介导的m6A修饰或USP7调节的二氧化和炎症加速了败血症急性肺损伤中的氧化应激和炎症

Zemin Xiang¹, Xudong Lu¹, Lefeng Zhang^2,3

¹Department of Emergency, Lishui People's Hospital, Lishui, 323060, Zhejiang, China.

Shock (Augusta, Ga.)

|October 30, 2025

概括

转化生长因子β受体II (TGFBR2) 在败血症引起的急性肺损伤 (ALI) 中驱动炎症和氧化应激. 准TGFBR2为败血症诱导的ALI提供了潜在的治疗策略.

科学领域:

细胞生物学细胞生物学
分子生物学分子生物学
免疫学免疫学免疫学

背景情况:

败血症引起的急性肺损伤 (ALI) 是有限的治疗选择的关键并发症.
转化生长因子β受体II (TGFBR2) 与败血症和ALI的发病有关.
了解TGFBR2在败血症引起的ALI中的机制对于开发疗法至关重要.

研究的目的:

阐明TGFBR2在败血症引起的急性肺损伤 (ALI) 中的机制.
调查m6A修饰和二维基化在调节TGFBR2.2中的作用.
评估TGFBR2作为毒引起的ALI的潜在治疗标.

主要方法:

使用脂聚糖 (LPS) 刺激的人类肺微血管内皮细胞 (HPMECs) 建立了体外ALI模型.
评估细胞活力,增殖,亡,炎症 (IL-6,IL-1β,TNF-α),反应性氧物种 (ROS) 和马隆迪 (MDA) 的水平.
使用了西部斑块,qRT-PCR,ELISA,流细胞测量,生物信息分析,RIP,MeRIP,双露西法酶记者测定,共免疫沉 (Co-IP) 和双化测定.
在多微生物败血症的小鼠模型中验证的发现.

主要成果:

在败血症-ALI患者和用LPS治疗的HPMEC患者中观察到TGFBR2表达的升高.
TGFBR2倒置减轻了LPS诱导的HPMEC损伤,包括减少了亡,炎症和氧化应激.
METTL14和IGF2BP2通过m6A修饰稳定了TGFBR2mRNA,而USP7则通过duebiquitination稳定了TGFBR2.
沉默METTL14或USP7降低了TGFBR2水平,并保护HPMEC免受LPS引起的损伤.
在体内,TGFBR2敲击减轻了败血症诱导的ALI.

结论:

TGFBR2在败血症引起的ALI中加剧炎症和氧化应激.
TGFBR2 调节涉及METTL14/IGF2BP2介导的m6A修饰和USP7 调节的deubiquitination.
TGFBR2代表了一种有前途的治疗瘤诱导ALI的治疗标.

关键词:

急性肺损伤是什么?急性肺损伤是什么?在METTL14中,使用的是METTL14 这是一种N6-甲基氨酸.这是TGFBR2的TGFBR2.USP7 USP7 美国在Ubiquitination中使用.

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