巨细胞的颗粒吸收触发了分叉的转录途径,这些途径可以差异调节炎症和溶酶体基因表达
Isidoro Cobo1, Jessica Murillo-Saich2, Mohnish Alishala3
1Division of Clinical Immunology & Rheumatology, Department of Medicine, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA; CAMBAC (Comprehensive Arthritis, Musculoskeletal, Bone and Autoimmunity Center), University of Alabama at Birmingham, Birmingham, CA, USA.
Immunity
|March 21, 2025
概括
暴露于颗粒物会触发明显的巨细胞炎症反应和 lysosomal 基因激活. 一个5'primeAMP激活蛋白激酶 (AMPK) 网络调节 lysosomal 基因,与JNK-AP-1通路独立,驱动炎症.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 毒理学 毒理学 毒理学
背景情况:
- 暴露于颗粒物与炎症性疾病有关.
- 巨细胞是关键的免疫细胞,对粒子暴露做出反应.
- 了解巨细胞的反应对于治疗粒子诱导疾病至关重要.
研究的目的:
- 为了研究巨细胞对各种粒子的反应.
- 为了识别常见的炎症特征和 lysosomal 基因激活通路.
- 阐明控制这些反应的监管网络.
主要方法:
- 用单酸盐晶体,酸晶体,盐和纳米粒子培养和刺激巨细胞.
- 基因表达造型,以识别不同的和共同的模式.
- lysosomal 酸化基因激活的分析.
- 使用单酸盐晶体作为模型,研究5'-prime-AMP激活蛋白激酶 (AMPK) 和JNK-AP-1通路的作用.
主要成果:
- 对于每个粒子类型观察到不同的基因表达模式.
- 在粒子中发现了一个常见的炎症特征和 lysosomal 酸化基因的急性激活.
- 溶酶体基因程序由AMPK依赖的网络调节,涉及TFEB,TFE3,DNMT3A和DOT1L.
- 这种溶解体通路在很大程度上独立于驱动化学和细胞表达的JNK-AP-1网络运作.
结论:
- 巨细胞对颗粒的反应涉及炎症和溶酶体通路的分支.
- 依赖AMPK的溶酶体基因程序代表了一个独特的响应机制.
- 这些发现提供了对粒子相关炎症疾病的潜在治疗点的见解.
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