巨细胞激活在生命早期的过敏性喘中破坏了内皮细胞和皮细胞之间的相互作用
Régis Joulia1, Franz Puttur1, Helen Stölting1
1National Heart and Lung Institute (NHLI), Imperial College London, London, United Kingdom (UK).
The Journal of clinical investigation
|March 15, 2024
概括
早期的过敏性喘会破坏新生儿肺部的血管结构. 乳腺细胞蛋白酶导致细胞周损失,可能导致儿童的长期血管缺陷.
科学领域:
- 肺部医学 肺部医学
- 血管生物学 血管生物学
- 免疫学 免疫学 免疫学
背景情况:
- 过敏性喘,通常在生命早期开始,导致显著的肺组织重塑和功能障碍.
- 虽然已知呼吸道血管新生,但早期喘对肺微循环的影响尚不清楚.
研究的目的:
- 为了研究早期过敏性喘对肺微循环的影响.
- 在新生儿喘模型中阐明血管变化背后的机制.
主要方法:
- 在精密切割的肺切片 (PCLS) 中对新生小鼠进行定量成像,这些新生小鼠暴露在室内灰尘虫 (HDM) 提取物中.
- 儿童喘内支气管活检的空间转录学分析.
主要成果:
- 在新生小鼠肺的偶然区域中,HDM暴露破坏了内皮细胞/细胞相互作用.
- 乳腺细胞 (MC) 蛋白酶,如酶,驱动细胞周细胞损失和减少N-cadherin表达.
- 空间转录学在儿科喘活检中揭示了血管应激,重塑和MC激活途径.
结论:
- 早期的过敏性喘会通过巨细胞蛋白酶诱导细胞周损失,影响血管完整性.
- 这些发现表明,喘患者的肺微循环中可能存在长期血管缺陷.
- 这项研究突出了对喘病理生理学的新见解,重点关注血管并发症.
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