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Foxp3 enhancers synergize to maximize regulatory T cell suppressive capacity

ABSTRACT: Foxp3 enhancers synergize to maximize regulatory T cell suppressive capacity

PROVIDER: PRJNA664381 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12659602_1.fastq.gz	Fastqsanger.gz
	SRR12659602_2.fastq.gz	Fastqsanger.gz
	SRR12659603_1.fastq.gz	Fastqsanger.gz
	SRR12659603_2.fastq.gz	Fastqsanger.gz
	SRR12659604_1.fastq.gz	Fastqsanger.gz

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Project description:Treg cells bearing a diverse antigen receptor repertoire suppress pathogenic T cells and maintain immune homeostasis during their long lifespan. How their robust function is determined genetically remains elusive. Here, we investigate the regulatory space of the cis-regulatory elements of Treg lineage–specifying factor Foxp3. Foxp3 enhancers are known as distinct readers for environmental cues in promoting Treg cell induction or lineage stability. However, their single deficiencies cause mild, if any, immune dysregulation, leaving the key transcriptional mechanisms determining Foxp3 expression and thereby Treg suppressive capacity uncertain. We examined the collective activities of Foxp3 enhancers and found that they coordinate to maximize Treg cell induction, Foxp3 expression level, or lineage stability through distinct modes and that ablation of synergistic enhancers led to lethal autoimmunity in young mice. Thus, the induction and maintenance of a diverse, stable Treg cell repertoire rely on combinatorial Foxp3 enhancers, suggesting broad, stage-specific, synergistic activities of cell-intrinsic factors and -extrinsic cues in determining Treg suppressive capacity.

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