通过ORMDL3介导的支气管上皮质质导致喘肥胖小鼠的肺炎
1Children's Hospital Capital Institute of Pediatrics, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, P.R. China.
Molecular medicine reports
|August 18, 2023
概括
肥胖加剧了喘,促进了气道重塑和热,由ORMDL3/CTSD/NLRP3/GSDMD通路驱动. 这一发现为治疗患有喘的肥胖儿童提供了新的见解.
科学领域:
- 肺部医学 肺部医学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 肥胖儿童的喘表现为严重的喘息和气道重塑.
- 与肥胖相关的喘背后的机制仍然不太清楚.
- 肥胖使喘管理复杂化,导致治疗效率降低.
研究的目的:
- 用小鼠模型阐明与肥胖相关的喘病变.
- 为了确定参与肥胖驱动喘的关键分子通路.
- 调查ORMDL3在热和气道改造中的作用.
主要方法:
- 使用高脂肪饮食和卵蛋白挑战,建立了与肥胖相关的喘的小鼠模型.
- 在肺组织上进行了蛋白质和生物信息学分析.
- 使用HBE细胞的体外实验评估了ORMDL3在热的作用.
主要成果:
- 肥胖的喘小鼠表现出明显的气道改造.
- 蛋白质组分析揭示了200种蛋白质的差异表达,影响了 lysosome, phagosome 和 sphingolipid 代谢途径.
- 观察到高ORMDL3,NLRP3和GSDMD蛋白质水平的热,由增加的GSDMD和Caspase表明.
结论:
- 在HBE细胞中ORMDL3的过度表达增加了NLRP3,GSDMD和CTSD的表达.
- CTSD/NLRP3/GSDMD途径与肥胖相关的喘中的热和呼吸道重塑有关.
- 准ORMDL3介导途径可能为肥胖儿童的喘提供治疗策略.
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