在B细胞分化过程中的自发EBV再激活作为多态EBV驱动淋巴增殖模型.
Matthew A Care1,2, Sophie Stephenson1, Roger Owen3
1Division of Haematology and Immunology, Leeds Institute of Medical Research, University of Leeds, Leeds LS9 7TF, UK.
Cancers
|June 28, 2023
概括
爱斯坦-巴尔病毒 (EBV) 在分化的B细胞中重新激活,产生表达EBV基因的血细胞和B细胞. 这些与EBV相关的细胞表现出生殖中心B细胞特征,表明与非切换的B细胞有联系.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 细胞生物学 细胞生物学
背景情况:
- 爱斯坦-巴尔病毒 (EBV) 通过潜伏感染的重新激活驱动B细胞新生病.
- 多态淋巴增殖性疾病 (LPD) 涉及EBV驱动B细胞分化.
- 自发EBV重新激活模型多态EBV驱动的LPD.
研究的目的:
- 开发一个体外模型的血细胞 (PC) 从外周血液记忆B细胞分化.
- 在PC分化过程中分析EBV相关的细胞群.
- 为了研究EBV初级活性化中的基因表达模式.
主要方法:
- 开发了一种体外血细胞从记忆B细胞分化模型.
- 利用一个向的单细胞基因表达面板.
- 在PC阶段分析了八种差异化.
主要成果:
- 已识别的EBV基因表达亚群具有PC和/或B细胞特征 (3-28%的细胞).
- 大多数与EBV相关的细胞表达PC基因 (例如XBP1,MZB1),包括静止的PC分数.
- 繁殖EBV相关细胞显示保留CD20表达和IgM/IgD联合表达,而类切换细胞是静止的PC.
结论:
- 主要的EBV重新激活模式包括生殖中心B细胞特征.
- 经过EBV转化的淋巴细胞细胞系也表现出GC B细胞特征.
- 自发性EBV扩张特别与IgM+IgD+非切换B细胞有关.
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