通过测序 (CITE-seq) 分析转录体和表观体的多原子细胞索引来解开人类外周血液B细胞子集的复杂性
Nathan J Meinhardt1,2, Anthony J Veltri1, Cody J Gurski1
1Versiti Blood Research Institute, Milwaukee, WI, United States.
ImmunoHorizons
|February 12, 2026
概括
研究人员确定了一种罕见的人类B细胞子集 (IgM+IgDlow/-),可以治疗自身免疫. 这一发现利用了多组学方法来准确追踪这些关键的免疫细胞.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 基因组学就是基因组学.
背景情况:
- 仅仅通过表面标记来对人类B细胞子集进行分类是具有挑战性的.
- 发现一种特定的小鼠脏B细胞子集 (BDL) 诱导调节性T细胞,这表明自身免疫的治疗潜力.
- 罕见的B细胞子集往往缺乏足够的表面标记物来识别,需要先进的技术.
研究的目的:
- 为识别和跟踪罕见的人类B细胞子集制定多组学策略.
- 在验证新型细胞群中克服仅转录组单细胞RNA测序 (scRNA-seq) 的局限性.
- 使用周围血液IgM+IgDlow/-B细胞作为研究这些罕见子集的替代体.
主要方法:
- 采用了结合流动细胞计和通过测序 (CITE-seq) 来对转录组和表位组进行细胞索引的多组学工作流.
- 人类外周血液B细胞使用流细胞计门方案 (CD27对IgD和CD24对CD38) 进行分析.
- scRNA-seq证实了对原始,不成熟和记忆B细胞种群的鉴定.
主要成果:
- 该研究成功地根据细胞表面表达确定了人类IgM+IgDlow/-B细胞子集.
- 多原子方法允许随后对这些已识别的子集的独特转录资料进行分析.
- 开发的方法验证了最初由表面蛋白质转录所建议的细胞群的识别.
结论:
- 通过多原子策略,可以通过细胞表面表型识别罕见的人类B细胞子集.
- 这种方法克服了scRNA-seq单独用于验证新型细胞群的局限性.
- 已识别的IgM+IgDlow/-B细胞子集是自身免疫疗法的潜在目标.
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