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MAPK14驱动铁亡和免疫功能障碍在儿科败血症引起的急性肺损伤

Ning Zhang¹, Yuanyuan Fan², Juan Chen³

¹Department of Surgery Intensive Care Unit (SICU), Children's Hospital of Soochow University, Suzhou, Jiangsu 215008, China.

Cellular immunology

|April 10, 2025

概括

线原激活蛋白激酶14 (MAPK14) 通过上调TTP53,加剧急性肺损伤,促进儿科败血症中的铁和免疫抑制.

科学领域:

细胞生物学细胞生物学
免疫学免疫学免疫学
分子医学是分子医学.

背景情况:

败血症引起的急性肺损伤 (ALI) 涉及炎症,氧化应激和免疫抑制.
中原激活蛋白激酶14 (MAPK14),也称为p38α,涉及铁和免疫调节,但其在儿科败血症中的作用尚不清楚.

研究的目的:

调查MAPK14在儿科败血症诱导的ALI中的作用和潜在机制.
在此背景下,阐明MAPK14通过哪些特定途径影响铁和免疫反应.

主要方法:

对基因表达数据集 (GSE26440) 和铁亡数据库 (FerrDb) 的生物信息分析,以确定相关的基因.
定量实时PCR (qRT-PCR) 和西部抹黑测量患者样本,细胞系和小鼠模型中的MAPK14表达.
评估铁灭菌标记物 (MDA,GSH,Fe2+,ROS) 和中性粒细胞活性 (MPO,PD-L1,细胞灭菌).

主要成果:

MAPK14被确定为与铁亡相关的基因,在儿科败血症中被上调.
过度表达MAPK14通过上调TTP53的调节促进了铁亡,这抑制了SLC7A11和GPX4.
通过增加MPO和PD-L1表达,MAPK14增强了中性粒细胞透和免疫抑制,同时抑制了中性粒细胞亡.

结论:

在儿科败血症中,MAPK14在通过TP53/SLC7A11/GPX4途径驱动铁亡中发挥着关键作用.
MAPK14通过促进中性粒细胞的透,加剧免疫抑制,有助于败血症诱导的ALI的发病.

关键词:

急性肺损伤是什么?急性肺损伤是什么?铁性化 (ferroptosis) 是一种在MAPK14中,您可以使用MAPK14 中性粒细胞的透.败血症这是一种败血症.在TTP53/SLC7A11/GPX4中使用.

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