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Unraveling the Phenotypic States of Human innate-like T Cells in thymus and blood: Insights from Single-Cell Transcriptomics

ABSTRACT: Unraveling the Phenotypic States of Human innate-like T Cells in thymus and blood: Insights from Single-Cell Transcriptomics

PROVIDER: PRJNA1050192 | ENA |

REPOSITORIES: ENA

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	SRR27147133_1.fastq.gz	Fastqsanger.gz
	SRR27147133_2.fastq.gz	Fastqsanger.gz
	SRR27147134_1.fastq.gz	Fastqsanger.gz
	SRR27147134_2.fastq.gz	Fastqsanger.gz

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Unraveling the Phenotypic States of Human innate-like T Cells in thymus and blood: Insights from Single-Cell Transcriptomics

Project description:The "innate-like" T cell compartment, known as Tinn, encompasses a diverse group of T cells that straddle the boundary between innate and adaptive immunity. We explored the transcriptional landscape of Tinn compared to conventional T cells (Tconv) in the human thymus and blood using scRNA sequencing

2024-09-11 | GSE249684 | GEO

Unraveling the Phenotypic States of Human innate-like T Cells: Comparative Insights with Conventional T Cells and Mouse Models.

Project description:The "innate-like" T cell compartment, known as Tinn, represents a diverse group of T cells that straddle the boundary between innate and adaptive immunity, having the ability to mount rapid responses following activation. In mice, this ability is acquired during thymic development. We explored the transcriptional landscape of Tinn compared to conventional T cells (Tconv) in the human thymus and blood using single cell RNA sequencing and flow cytometry. We reveal that in human blood, the majority of Tinn cells, including iNKT, MAIT, and Vδ2+Vγ9+ T cells, share an effector program characterized by the expression of unique chemokine and cytokine receptors, and cytotoxic molecules. This program is driven by specific transcription factors, distinct from those governing Tconv cells. Conversely, only a fraction of thymic Tinn cells displays an effector phenotype, while others share transcriptional features with developing Tconv cells, indicating potential divergent developmental pathways. Unlike the mouse, human Tinn cells do not differentiate into multiple effector subsets but develop a mixed type I/type III effector potential. To conduct a comprehensive cross-species analysis, we constructed a murine Tinn developmental atlas and uncovered additional species-specific distinctions, including the absence of type II Tinn cells in humans, which implies distinct immune regulatory mechanisms across species. The study provides insights into the development and functionality of Tinn cells, emphasizing their role in immune responses and their potential as targets for therapeutic interventions.

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