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在过敏性喘中,TRPM2通过调节氧化CaMKII来加剧呼吸道炎症
Xueping Liu1, Lingyan Zhao2, Rui Wang1
1Department of Pulmonary and Critical Care Medicine, Yantai Yuhuangding Hospital, 264000, China.
Heliyon
|January 8, 2024
概括
与美拉斯相关的暂时受体潜能2 (TRPM2) 在呼吸道上皮细胞中调节氧化Ca2+/卡尔莫杜林依赖蛋白激酶II (ox-CaMKII). 这项研究表明,TRPM2通过影响ox-CaMKII信号通路,对过敏性喘炎症至关重要.
科学领域:
- 细胞和分子生物学 细胞和分子生物学
- 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:
- 气道上皮细胞在过敏喘的发病过程中至关重要.
- 暂时的受体潜在拉斯相关的2 (TRPM2) 和氧化Ca2+/calmodulin依赖蛋白激酶II (ox-CaMKII) 都与呼吸道炎症有关.
研究的目的:
- 研究TRPM2在过敏性喘期间在呼吸道上皮细胞内调节ox-CaMKII的作用.
- 在喘模型中阐明将TRPM2与炎症信号联系起来的分子机制.
主要方法:
- 用IL-13刺激BEAS-2B细胞,并用TRPM2siRNA或cDNA处理以改变TRPM2的表达.
- 使用一个CaMKII抑制剂 (KN-93) 来评估下游信号 (p-MEK,p-ERK).
- 卵胺 (OVA) 诱导的过敏性喘在野生型和TRPM2-淘汰赛小鼠中进行模拟.
主要成果:
- 在BEAS-2B细胞中,IL-13增加了TRPM2和ox-CaMKII水平;TRPM2调节影响了ox-CaMKII水平.
- 抑制TRPM2或CaMKII降低了IL-13治疗细胞中的ox-CaMKII,p-MEK和p-ERK水平.
- 与野生型小鼠相比,TRPM2淘汰小鼠的呼吸道炎症,ox-CaMKII,p-MEK和p-ERK减少.
结论:
- TRPM2显著影响气道上皮细胞中的ox-CaMKII表达和活性.
- TRPM2在过敏性喘的炎症级联中起到关键的调节作用.
- 准TRPM2可能为过敏性喘提供治疗策略.
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