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带血中葡萄皮质受体表达和功能的降低来自患病性早产新生儿的带血免疫细胞
Nana A O Anti1, Douglas D Deming2, Ciprian P Gheorghe1,3
1Lawrence D. Longo MD Center for Perinatal Biology, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA.
International journal of molecular sciences
|November 13, 2025
概括
发展疾病的早产婴儿显示出葡萄糖皮质体受体 (GR) 功能受损,特别是炎症基因的转抑制减少. 这种功能障碍可能起源于子宫,影响新生儿免疫反应,尽管产前皮质类固醇治疗.
科学领域:
- 免疫学 免疫学 免疫学
- 内分泌学 在内分泌学.
- 新生儿医学 新生儿医学
背景情况:
- 产前皮质类固醇治疗改善胎儿器官成熟,但新生儿发病率仍然存在.
- 不利的子宫内环境可能会扰乱葡萄糖皮质体受体 (GR) 稳态,但机制尚不清楚.
研究的目的:
- 为了研究从早产婴儿的带血免疫细胞中的ex vivo葡萄糖皮质激素敏感性.
- 确定GR功能,新生儿发病率和失调的GR恒温的潜在机制之间的关联.
主要方法:
- 来自两组早产期患者的带血免疫细胞的分析,这些免疫细胞曾经接触过葡萄糖皮质类药物 (贝他美/德克萨米).
- 评估GR异型表达,通过qPCR进行基因转活/转抑制,免疫阻塞,流细胞计和ELISA.
- 对炎症基因 (IL6,TNF) 和GR依赖基因 (GILZ,FKBP5) 的评估.
主要成果:
- 减少GR表达,特别是GRα,在新生儿中观察到,在培养时间后患病率.
- 在发病率组中,IL6和TNF的ex vivo葡萄糖皮质激素介导转抑制受损.
- 不管新生儿发病率如何,保留了GRE依赖基因 (GILZ,FKBP5) 的交换活化.
结论:
- 新生儿发病时表现出早期的产后GR功能障碍,可能在子宫内被编程.
- GR功能障碍涉及转压力受损,而事务激活功能保持完整.
- 这些发现突出了管理早产婴儿新生儿发病率的潜在治疗目标.
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