TM9SF1的表达与自身免疫性疾病的活动相关,并通过依赖mTOR的自细胞调节抗体的产生
Juan Xiao1,2, Zhenwang Zhao1,2, Fengqiao Zhou1,2
1Institute of Neuroscience and Brain Diseases, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, Hubei, 441021, China.
BMC medicine
|November 1, 2024
概括
超膜9超级家族成员1 (TM9SF1) 在类风湿性关节炎和狼等自身免疫性疾病中起着关键作用. 血液细胞中的TM9SF1水平准确预测疾病活动,可能是治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 自免疫性疾病 自免疫性疾病
背景情况:
- 超膜9超级家族成员1 (TM9SF1) 参与炎症过程.
- 自身免疫性疾病涉及免疫细胞失调,并因自身抗体的产生而加剧.
- 研究TM9SF1在B细胞分化和自身抗体产生中的作用对于了解自身免疫性疾病活性至关重要.
研究的目的:
- 研究TM9SF1表达与自身免疫性疾病,特别是类风湿性关节炎 (RA) 和全身性红斑狼 (SLE) 的活性之间的关联.
- 探索TM9SF1在B细胞成熟和自身抗体产生过程中调节的信号通路.
- 评估TM9SF1作为疾病活性生物标志物的潜力.
主要方法:
- 使用Tm9sf1淘汰赛 (Tm9sf1-/-) 鼠标模型治疗RA和SLE,以评估疾病的严重程度.
- 从RA和SLE患者和健康对照的外周血液单核细胞 (PBMC) 中分析了TM9SF1的表达.
- 采用后勤回归和ROC曲线分析来评估TM9SF1作为疾病活动的预测因子.
- 进行了体外实验,以阐明TM9SF1在B细胞分化和通过血细胞诱导产生抗体中的作用.
主要成果:
- Tm9sf1-/-小鼠在RA和SLE模型中表现出减少的自身抗体产生和疾病严重程度.
- 与健康对照组相比,RA和SLE患者的PBMC中TM9SF1水平较高,并且在疾病活性较低的患者中较低.
- TM9SF1水平与自身抗体标位和促炎细胞因子正相关.
- 与现有的临床指标相比,ROC分析表明TM9SF1的疾病活动预测性能优越 (RA的AUC为0.858,SLE为0.876).
- 实验室研究表明,TM9SF1的缺陷通过调节mTOR依赖的自来抑制B细胞分化成血细胞.
结论:
- TM9SF1通过mTOR依赖的自调节B细胞分化为分泌抗体的血细胞.
- 在PBMC中的TM9SF1表达是RA和SLE患者疾病活性的可靠指标.
- TM9SF1具有重要的临床潜力,用于监测类风湿性关节炎和全身性红斑狼的疾病活动.
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