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人类胸膜假定CD8αα前体在单细胞AIRR-seq中表现出偏向的TCR谱

Marte Heimli¹, Siri Tennebø Flåm¹, Hanne Sagsveen Hjorthaug¹

¹Department of Medical Genetics, University of Oslo and Oslo University Hospital, 0424, Oslo, Norway.

Scientific reports

|October 18, 2023

概括

T细胞受体 (TCR) 谱系会影响小胞细胞的发育,指导传统或激素选择之间的决定. 这一发现对于开发免疫媒介疾病的治疗方法至关重要.

科学领域:

免疫学免疫学免疫学
分子生物学分子生物学
发展生物学发展生物学

背景情况:

胸膜T细胞的发育涉及T细胞受体 (TCR) 重组和自我反应性评估.
自主反应性可以导致负选择或激素选择,将T细胞分化为非传统的血统,如调节性T细胞和CD8T细胞.

研究的目的:

调查适应性免疫受体谱系如何影响小胞细胞发育决策.
探索TCR特征在区分传统和激进选择途径中的作用.

主要方法:

单细胞自适应性免疫受体谱系测序 (scAIRR-seq) 对来自人类儿科样本和血液的胸细胞进行了测序.
分析的重点是TCR特征,包括互补性决定区域3 (CDR3) 氨基酸特性.

主要成果:

胸膜PDCD1+细胞,一种潜在的CD8 T细胞前体种群,表现出与ZNF683+ CD8 T细胞相似的TCR特征.
这些特征包括丰富大型和正电荷的CDR3氨基酸.

结论:

TCR谱系可能部分决定了胸细胞分化途径,影响了常规与激进分子选择.
了解这些机制对于推进免疫媒介疾病的治疗方法至关重要.

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