在慢性呼吸道疾病中,HSP70是IL-33活性的陪伴者
Omar A Osorio1, Heather E Raphael1, Colin E Kluender1
1Department of Medicine, Division of Pulmonary and Critical Care Medicine, and.
JCI insight
|June 24, 2025
概括
在慢性呼吸道疾病 (如COPD和喘) 中,介素-33 (IL-33) 的分泌涉及HSP70的陪伴者. 这种机制增强了IL-33的活性,并提供了潜在的治疗点.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 呼吸系统医学 呼吸系统医学
背景情况:
- 介素-33 (IL-33) 驱动2型炎症,与慢性阻塞性肺病 (COPD) 和喘有关.
- 慢性呼吸道疾病中IL-33分泌和调节的机制尚不清楚.
- 一种与呼吸道疾病相关的异型,IL-33Δ34,由上皮细胞以强力分泌.
研究的目的:
- 阐明慢性呼吸道疾病中IL-33Δ34分泌和调节的机制.
- 研究蛋白质稳定网络介质在IL-33分泌和活性中的作用.
- 为了确定COPD和喘的潜在治疗点.
主要方法:
- 研究了IL-33Δ34与HSP70的相互作用及其通过脂胺素 (PS) 结合向分泌器官的向.
- 分析了细胞外HSP70 (eHSP70) 在稳定分泌的IL-33Δ34.4中的作用.
- 在人类慢性呼吸道疾病样本中检查IL-33和蛋白质稳定介质 (HSP70,HSP90,CCT复合体) 的表达.
- 在COPD和喘患者的支气管洗上进行了差异细胞外囊泡 (EV) 蛋白质组分析.
主要成果:
- IL-33Δ34与细胞内HSP70相互作用,并通过PS结合被引导到非传统蛋白质分泌 (CUPS) 分区.
- eHSP70通过防止氧化和降解来稳定分泌的IL-33Δ34,增强其受体结合和活性.
- 在人类慢性呼吸道疾病中,HSP70,HSP90和CCT复合体的调节失调.
- 支气管洗中的差异性EV蛋白质与疾病活性相关,并可能增强IL-33功能.
结论:
- 蛋白质稳定中间体,特别是HSP70,作为IL-33.3的非正规分泌和活性的陪伴者.
- 这些陪伴者代表了管理慢性呼吸道疾病 (如COPD和喘) 的潜在治疗点.
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