素的下调会诱导中性友性喘中的炎症酶激活
Quang Luu Quoc1, YeJi Kim2, Gunwoo Park1
1Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea; Department of Biomedical Sciences, Ajou University School of Medicine, Suwon, Korea.
The Journal of allergy and clinical immunology
|April 10, 2024
概括
卵巢瘤蛋白酶二基因酶与线性链接特异性 (otulin) 缺乏在巨细胞驱动中性友性喘通过激活NLRP3炎症和IL-1β生产. 向otulin提供了严重喘的潜在治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 呼吸系统医学 呼吸系统医学
背景情况:
- 中性性喘 (NA) 是一种严重的表型,与类固醇耐药性和互乐素-1β (IL-1β) 过量产生有关.
- 驱动NA的确切机制尚不清楚,但TNF-α通路功能障碍和卵巢瘤蛋白酶二维基因酶与线性链接特异性 (otulin) 缺陷与自身免疫性疾病有关.
研究的目的:
- 为了研究一种假设,即巨细胞 (Mφ) 中的素降低调节会激活核酸结合域,富含白素的重复和含蛋白域的蛋白3 (NLRP3) 炎症体信号通路.
- 探索奥图林在NA病变发生中的作用.
主要方法:
- 从NA患者的血液单细胞子集和从NA小鼠的膜Mφ中评估了otulin表达.
- 在骨髓衍生的Mφ中评估了素缺乏的功能后果.φ.
- 研究受体相互作用蛋白激酶 (RIPK) -1和RIPK-3抑制对中性粒细胞和3组先天性淋巴细胞 (ILC3) 的 in vitro 和 in vivo 影响.
主要成果:
- 与健康对照人群相比,在NA患者的非经典单细胞中观察到显著的奥图林下调.
- 来自NA小鼠的膜Mφ显示了素表达的减少.
- 在Mφ中,奥图林的淘汰导致通过NLRP3炎症酶激活自发IL-1β的产生.
- 结合RIPK-1和RIPK-3的抑制通过阻断NA中的IL-1β释放减少了中性粒细胞和ILC3的透.
结论:
- 在上游因素奥图林的缺乏会引发IL-1β的过度产生,这表明它是NA的潜在诊断和治疗点.
- 向otulin-NLRP3炎症酶轴可能为严重的中性友性喘提供一种新的治疗策略.
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