PuSH - Publikationsserver des Helmholtz Zentrums München: 5-hydroxymethylcytosine remodeling precedes lineage specification during differentiation of human CD4<sup>+</sup> T cells.

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Nestor, C.E.* ; Lentini, A.* ; Hägg Nilsson, C.* ; Gawel, D.R.* ; Gustafsson, M.* ; Mattson, L.* ; Wang, H.* ; Rundquist, O.* ; Meehan, R.R.* ; Klocke, B.* ; Seifert, M.* ; Hauck, S.M. ; Laumen, H. ; Zhang, H.* ; Benson, M.*

5-hydroxymethylcytosine remodeling precedes lineage specification during differentiation of human CD4⁺ T cells.

Cell Rep. 16, 559-570 (2016)

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5-methylcytosine (5mC) is converted to 5-hydroxymethylcytosine (5hmC) by the TET family of enzymes as part of a recently discovered active DNA de-methylation pathway. 5hmC plays important roles in regulation of gene expression and differentiation and has been implicated in T cell malignancies and autoimmunity. Here, we report early and widespread 5mC/5hmC remodeling during human CD4(+) T cell differentiation ex vivo at genes and cell-specific enhancers with known T cell function. We observe similar DNA de-methylation in CD4(+) memory T cells in vivo, indicating that early remodeling events persist long term in differentiated cells. Underscoring their important function, 5hmC loci were highly enriched for genetic variants associated with T cell diseases and T-cell-specific chromosomal interactions. Extensive functional validation of 22 risk variants revealed potentially pathogenic mechanisms in diabetes and multiple sclerosis. Our results support 5hmC-mediated DNA de-methylation as a key component of CD4(+) T cell biology in humans, with important implications for gene regulation and lineage commitment.

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PuSH - Publikationsserver des Helmholtz Zentrums München

5-hydroxymethylcytosine remodeling precedes lineage specification during differentiation of human CD4+ T cells.

5-hydroxymethylcytosine remodeling precedes lineage specification during differentiation of human CD4⁺ T cells.