一种C型莱克通过TLR4相互作用诱导NLRP3炎症酶激活在人体外围血液单核细胞中
Yoda Janaina Ikenohuchi1, Milena Daniela Souza Silva1, Cristina Matiele Alves Rego1
1Laboratory of Cellular Immunology Applied to Health, Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Rua da Beira, 7671 BR364, Km 3.5, Porto Velho, RO, CEP 76812-245, Brazil.
Cellular and molecular life sciences : CMLS
|June 22, 2023
概括
BjcuL是一种蛇毒学蛋白,通过与TLR4相互作用并产生活性氧物种 (ROS),激活人类免疫细胞中的NLRP3炎症体. 这一途径有助于蛇咬伤的炎症,并提供治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 毒理学 毒理学 毒理学
- 生物化学 生物化学
背景情况:
- 蛇毒的讲解蛋白,如Bothrops jararacussu中的BjcuL,调节免疫反应.
- BjcuL刺激人体外围血液单核细胞 (PBMC) 中的细胞因子和活性氧物种 (ROS) 的产生.
- 炎症酶,特别是NLRP3,对先天免疫和对像蛇咬伤这样的刺激的炎症反应至关重要.
研究的目的:
- 研究BjcuL对PBMC中NLRP3炎症酶激活的作用.
- 阐明托尔类受体4 (TLR4) 和ROS在BjcuL诱导的NLRP3炎症酶激活和IL-1β产生中的作用.
主要方法:
- 隔离了PBMC,并用BjcuL进行了化.
- 用RT-qPCR,西斑和免疫光分析NLRP3炎症组分 (ASC,CASPASE-1,NLRP3) 的基因和蛋白质表达.
- 在体外和体外的研究评估了TLR4相互作用,NF-κB信号传递,以及TLR4调节剂,NLRP3抑制剂和ROS抑制剂对IL-1β释放的影响.
主要成果:
- 在PBMC中,BjcuL激活了NLRP3炎症酶.
- BjcuL与TLR4相互作用,并通过NF-κB信号传递诱导细胞因子的释放.
- TLR4激活和ROS产生对于BjcuL介导的NLRP3炎症酶激活和IL-1β分泌至关重要.
结论:
- BjcuL通过TLR4和ROS触发NLRP3炎症酶激活,导致蛇的炎症效应.
- 这些发现为开发TLR4激动剂和针对蛇毒的免疫调节疗法提供了洞察力.
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