α4 尼古丁性乙胆受体在与脂聚糖相关的肺炎中
Jeffrey D Ritzenthaler1, Walter H Watson2,3, Jesse Roman1
1Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine and the Jane & Leonard Korman Respiratory Institute, Thomas Jefferson University, Philadelphia, PA 19107, USA.
International journal of molecular sciences
|October 26, 2024
概括
脂聚糖 (LPS) 通过α-4尼古丁乙胆受体 (α4 nAChRs) 和氧化应激引发肺损伤,导致炎症. 抑制α4nAChRs可能为败血症引起的急性肺损伤提供新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 肺部病理学 肺部病理学
背景情况:
- 败血症经常导致急性肺损伤 (ALI) 和炎症.
- 目前针对收费类受体 (TLR) 途径的治疗方法的疗效有限.
- 脂多糖 (LPS) 是一个关键的败血症中介.
研究的目的:
- 为了研究α-4尼古丁性乙胆受体 (α4nAChRs) 在LPS诱导的肺损伤中的作用.
- 探索LPS,氧化应激和α4 nAChR激活促进炎症之间的联系.
主要方法:
- 用LPS治疗的人类THP-1单细胞和C57BL/6小鼠.
- 评估了炎症标记物,囊载体Slc7a11和α4nAChRs的基因表达.
- 使用了α4 nAChR抑制剂 (二-β-氨酸胺,DHβE),CRISPR/Cas9基因淘汰,N-乙半氨酸和流量测试.
主要成果:
- 在THP-1细胞和小鼠肺中,LPS增加了α4 nAChR表达和炎症基因表达.
- DHβE和α4 nAChR淘汰减少了LPS诱导的炎症基因表达.
- 由LPS诱导的Slc7a11表达和流入与氧化应激和α4nAChR激活有关.
结论:
- 通过氧化还原应激激活α4 nAChRs,促进肺部损伤,从而推动促炎性细胞因子的产生.
- 向α4 nAChRs代表了毒引起的ALI的潜在治疗途径.
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