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Updated: Jul 6, 2025

Flow Cytometric Characterization of Murine B Cell Development
Published on: January 22, 2021
一个双类型的淋巴细胞子集显示T细胞和B细胞功能.
Yifan Zhang1,2,3, Cuiyuan Guo1,2,3, Yigong Zhou4
1Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Key Laboratory of Laboratory Medicine of Henan Province, Zhengzhou, China.
研究人员在小鼠中发现了T/B表型淋巴细胞,它们表达T细胞和B细胞标记物. 这些来自B细胞的细胞参与免疫反应,也在人类中发现,这表明它们在正常生理学中起着作用.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 血液学 血液学 血液学
背景情况:
- 混合表型淋巴细胞 (T/B细胞) 在疾病中已知,但它们的生理作用尚不清楚.
- 了解这些细胞对于理解正常的免疫系统功能至关重要.
研究的目的:
- 在生理条件下调查T/B表型淋巴细胞的存在和特征.
- 确定这些双类型淋巴细胞的起源,分布和功能能力.
主要方法:
- 流式细胞计量用于识别表达T细胞 (CD3+) 和B细胞 (CD19+) 标记物的淋巴细胞子集.
- 功能性测试评估通过T细胞受体 (TCR) 和B细胞受体 (BCR) 信号的激活.
- 对细胞因子 (IL-2,TNF-α) 生产和参与疫苗接种后免疫反应的分析.
主要成果:
- 在小鼠中发现了一种新型淋巴细胞亚群 (CD3+CD19+),主要来自亲/前B细胞.
- 这些细胞分布在骨髓,淋巴细胞器官和血液中,对TCR/BCR刺激有反应.
- 双类型淋巴细胞有助于幽默和细胞免疫,与传统T细胞相比,具有独特的细胞因子配置 (较高的IL-2,较低的TNF-α).
- 在人体外周血液单核细胞 (PBMCs) 中存在类似的子集,尽管不那么频繁.
结论:
- T/B表型淋巴细胞是小鼠中天然存在的亚群,来自B细胞前体.
- 这些细胞具有功能性可塑性,参与适应性免疫,并表现出独特的细胞因子分泌模式.
- 人体中类似细胞的存在表明它们在哺乳动物免疫系统中起着保留的作用.
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