由P2X7受体诱导的人类乳腺细胞退化被介质素33增强
Barbora Salcman1, Rajia Bahri1, Peter W West1
1Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester M13 9NT, UK.
International journal of molecular sciences
|February 10, 2024
概括
介质素-33 (IL-33) 通过增加P2X7受体活性来增强对腺三酸盐 (ATP) 的杆细胞 (MC) 反应. 这种IL-33原始化促进了MC脱粒和IL-8释放,这对炎症反应至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 炎症研究 炎症研究
背景情况:
- 乳腺细胞 (MCs) 是屏障组织中的关键免疫细胞,对IL-33.3等损伤信号作出反应.
- 在受伤部位释放的腺三酸盐 (ATP) 调节了MC活性.
研究的目的:
- 为了研究IL-33如何影响ATP介导的巨细胞激活.
- 为了确定参与这种相互作用的特定纯能受体.
主要方法:
- 人类初级MCs用IL-33.3进行了初始化.
- 测量了对ATP和ADP的反应,包括脱粒化,IL-8释放和信号通路 (pERK1/2).
- 选择性P2X受体抑制剂 (P2X1,P2X4,P2X7) 用于确定受体作用.
主要成果:
- 激活IL-33显著增强了对ATP的MC反应,但没有ADP.
- 这导致了增加的脱粒化,IL-8释放和pERK1/2信号,这些是IL-33.3特有的效应.
- IL-33增加了MC上的P2X受体表达,P2X7被确定为ATP诱导的ERK1/2信号和降粒的关键.
结论:
- IL-33启动人体巨细胞对ATP的反应更强.
- 在IL-33刺激后,P2X7受体是增强ATP诱导的巨细胞脱粒和信号传递的关键调解者.
- 这些发现阐明了IL-33在调节炎症环境中的杆细胞反应中的机制.
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