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Zfp335 establishes neonatal immune tolerance through safeguarding effector Treg lineage commitment and maintenance

ABSTRACT: Regulatory T (Treg) cells are crucial for maintaining peripheral immune tolerance and preventing destructive autoreactive responses, but how heterogeneous Treg populations establish tolerant status remains unclear. Here, we found that Zinc finger protein 335 (Zfp335) is indispensable for the differentiation and maintenance of effector Treg (eTreg) population and immunological self-tolerance in neonates.Mice with Zfp335 deletion in Treg cells exhibit early-onset autoimmune disease with severe inflammation in multiple organs and unrestricted activation and expansion of conventional T cells.

ORGANISM(S): Mus musculus

PROVIDER: GSE189041 | GEO | 2022/05/01

REPOSITORIES: GEO

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Zfp335 establishes neonatal immune tolerance through safeguarding effector Treg lineage commitment and maintenance [RNA-seq]

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Zfp335 establishes neonatal immune tolerance through safeguarding effector Treg lineage commitment and maintenance [ChIP-seq]

Project description:Regulatory T (Treg) cells are crucial for maintaining peripheral immune tolerance and preventing destructive autoreactive responses, but how heterogeneous Treg populations establish tolerant status remains unclear. Here, we found that Zinc finger protein 335 (Zfp335) is indispensable for the differentiation and maintenance of effector Treg (eTreg) population and immunological self-tolerance in neonates. Mice with Zfp335 deletion in Treg cells exhibit early-onset autoimmune disease with severe inflammation in multiple organs and unrestricted activation and expansion of conventional T cells. Zfp335-deficient Treg cells display dysfunctional and pathogenic features together with multiple defects in proliferation, survival and suppressive function. Importantly, our single-cell RNA sequencing (scRNA-seq) analyses reveal distinct Treg populations and that Zfp335 deficiency causes an almost complete loss of eTreg population along with significant accumulation of dysfunctional Treg populations. Mechanistically, Zfp335 controls both fate decision and homeostasis of eTreg cells by directly targeting genes associated with homeostasis and oxidation-fueled oxidative phosphorylation (OXPHOS) and PI3K-Akt-mTOR metabolic pathways. Our data establish the concept that Zfp335 serves as a checkpoint and safeguard for eTreg lineage commitment and maintenance.

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Zfp335 establishes neonatal immune tolerance through safeguarding effector Treg lineage commitment and maintenance.

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The transcription factor Zfp335 promotes differentiation and persistence of memory CD8+ T cells by regulating TCF-1

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Zfp335 establishes neonatal immune tolerance through safeguarding effector Treg lineage commitment and maintenance.

Project description:This SuperSeries is composed of the SubSeries listed below.

2022-02-28 | GSE189077 | GEO

Genome-wide profiling of Zfp335 binding sites in thymocytes

Project description:The generation of naïve T lymphocytes is critical for immune function yet the mechanisms governing their maturation remain incompletely understood. We have identified a mouse mutant, bloto, that harbors a hypomorphic mutation in the zinc finger protein Zfp335. Mutant blt/blt mice exhibit a naïve T cell deficiency due to an intrinsic developmental defect that begins to manifest in the thymus and continues into the periphery, affecting T cells that have recently undergone thymic egress. Zfp335 binds to promoter regions via a consensus motif, and its target genes are enriched in categories related to protein metabolism, mitochondrial function and transcriptional regulation. Restoring the expression of one target, Ankle2, partially rescues T cell maturation. Our findings identify Zfp335 as a transcription factor and essential regulator of late-stage intrathymic and post-thymic T cell maturation.

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