Transcriptomics

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Conserved non-coding sequence 2 (CNS2) of the Foxp3 genomic locus is essential for the function and stability of regulatory T cells during their activation


ABSTRACT: Regulatory T (Treg) cells play an indispensable role in immune homeostasis. The development and function of Tregs are dependent on transcriptional factor Foxp3, but how constant expression of Foxp3 is maintained in Tregs is not clear. Here we show that ablation of the conserved non-coding DNA sequence 2 (CNS2) at the Foxp3 locus in mice led to spontaneous lymphoproliferative disease and exacerbation of experimental autoimmune encephalomyelitis (EAE). CNS2 is required for activated Treg cells to maintain elevated Foxp3 expression, which is critical for their suppressor function and lineage stability. Mechanistically, upon TCR stimulation, NFAT binds to both CNS2 and Foxp3 promoter and mediates the interaction between CNS2 and Foxp3 promoter. Our findings demonstrated an essential role for CNS2 in maintaining the stability and function of activated Treg cells and identified NFAT as a key mediator of its function. Gene expression was profiled in T regulatory cells (Treg) in WT and CNS2 knockout mice. CNS2 knockout mice lack a conserved non-coding DNA sequence 2 (CNS2) at the Foxp3 locus. Treg cells were further sorted into Foxp3-high and Foxp3-low populations based on the expression level of Foxp3. mRNA was profiled using RNA-Seq (unstranded, polyA+, SE100) in replicate for each condition

ORGANISM(S): Mus musculus  

SUBMITTER: Ye Zheng   Christophter Benner  Christopher Benner  Mathias LeBlanc  Xudong Li  Yuqiong Liang 

PROVIDER: E-GEOD-57272 | ArrayExpress | 2014-09-04

SECONDARY ACCESSION(S): SRP041655GSE57272PRJNA246149

REPOSITORIES: GEO, ArrayExpress, ENA

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Publications

Function of a Foxp3 cis-element in protecting regulatory T cell identity.

Li Xudong X   Liang Yuqiong Y   LeBlanc Mathias M   Benner Chris C   Zheng Ye Y  

Cell 20140801 4


The homeostasis of multicellular organisms requires terminally differentiated cells to preserve their lineage specificity. However, it is unclear whether mechanisms exist to actively protect cell identity in response to environmental cues that confer functional plasticity. Regulatory T (Treg) cells, specified by the transcription factor Foxp3, are indispensable for immune system homeostasis. Here, we report that conserved noncoding sequence 2 (CNS2), a CpG-rich Foxp3 intronic cis-element specifi  ...[more]

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