DOI: 10.1101/478529Nov 27, 2018Paper

Deciphering the Regulatory Landscape of γδ T Cell Development by Single-Cell RNA-Sequencing

BioRxiv : the Preprint Server for Biology
Sagar SagarDominic Grün


Recent studies have established γδ T cells as critical players in a broad range of infections, antitumor surveillance, autoimmune diseases and tissue homeostasis. However, differentiation of γδ T cells in the adult thymus remains poorly understood, due to the rare frequency of this lineage. Here, we infer high-resolution developmental trajectories of this rare population by single-cell RNA-sequencing. We reveal previously unknown subtypes and identify the transcription factor c-MAF as a novel key regulator of IL-17-producing γδ T cell (γδT17) differentiation. c-MAF knockout mice exhibit a complete block in γδT17 differentiation, absence of these cells from peripheral organs, and protection from an autoimmune phenotype in a psoriasis model. Single-cell RNA-sequencing of Sox13 and Rorc knockout mice pinpoints c-MAF as an essential missing link between these lineage-specifying factors. These findings significantly enhance our understanding of γδ T cell ontogeny. Our experimental strategy provides a blueprint for deciphering differentiation of rare cell types.

Related Concepts

Autoimmune Diseases
Cell Differentiation Process
Thymus Gland
Transcription Factor
Macrophage-Activating Factors
Mice, Knockout

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