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IL-33/ST2轴在CpG诱导的巨细胞激活综合征中的作用

Yuanji Dong^1,2, Rongfen Gao¹, Kailin He¹

¹Department of Rheumatology and Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.

Journal of immunology research

|October 16, 2023

概括

IL-33/ST2轴对小鼠的巨细胞激活综合征 (MAS) 没有显著影响. 淘汰IL-33或ST2并没有改变疾病严重程度,这表明这种途径不是MAS的可行的治疗标.

科学领域:

免疫学免疫学免疫学
炎症生物学炎症生物学

背景情况:

巨细胞激活综合征 (MAS) 是一种严重的,致命的炎症状况,其特征是高水平的细胞因子和器官功能障碍.
之前的研究表明,ST2在T细胞过度活化中的有害作用在血细胞淋巴细胞细胞瘤模型中.
IL-33/ST2轴在MAS病原体中的参与在很大程度上仍未被探索.

研究的目的:

研究IL-33/ST2信号通路在MAS小鼠模型中的作用.
确定IL-33/ST2轴是否影响CpG诱导的MAS的发展和严重程度.

主要方法:

在一只小鼠模型中,使用反复注射细胞氨酸酸氨酸 (CpG) 来诱导MAS.
通过免疫组织化学和qPCR在肝脏和脏组织中评估IL-33和ST2表达水平.
在野生型和IL-33/ST2淘汰赛小鼠中量化了细胞因子水平,有机巨变和免疫细胞群 (巨细胞,T淋巴细胞).

主要成果:

CpG注射成功诱导了MAS,其特征是高细胞动血和肝大.
在MAS小鼠组织中观察到IL-33阳性细胞的显著减少,而ST2表达显示出增加的趋势.
IL-33和ST2淘汰的小鼠表现出与野生类型对照相比较的MAS严重程度,包括细胞因子风暴,有机巨变和免疫细胞概况.

结论:

IL-33/ST2轴似乎在CpG诱导的MAS的发病过程中发挥的作用很小.
针对IL-33/ST2通路并不能为MAS提供治疗潜力.
可能需要进一步的研究来确定其他关键途径参与MAS进展.

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