Abstract
Multipotential naive CD4+ T cells differentiate into distinct lineages including T helper 1 (Th1), Th2, Th17, and inducible T regulatory (iTreg) cells. The remarkable diversity of CD4+ T cells begs the question whether the observed changes reflect terminal differentiation with heritable epigenetic modifications or plasticity in T cell responses. We generated genome-wide histone H3 lysine 4 (H3K4) and lysine 27 (H3K27) trimethylation maps in naive, Th1, Th2, Th17, iTreg, and natural Treg (nTreg) cells. We found that although modifications of signature-cytokine genes (Ifng, Il4, and Il17) partially conform to the expectation of lineage commitment, genes encoding transcription factors like Tbx21 exhibit a broad spectrum of epigenetic states, consistent with our demonstration of T-bet and interferon-γ induction in nTreg cells. Our data suggest an epigenetic mechanism underlying the specificity and plasticity of effector and regulatory T cells and also provide a framework for understanding complexity of CD4+ T helper cell differentiation.
Original language | English |
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Pages (from-to) | 155-167 |
Number of pages | 13 |
Journal | Immunity |
Volume | 30 |
Issue number | 1 |
DOIs | |
State | Published - 16 Jan 2009 |
Bibliographical note
Funding Information:We thank W. Leonard for critical reading of the manuscript and J. Simone for technical help with cell sorting. The gene-expression analysis with the Affymetrix microarrays was performed by the Gene Expression Core Facilities of National Heart, Lung, and Blood Institute (NHLBI) and the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS). This research was supported by the Intramural Research Programs of the National Institute of Allergy and Infectious Diseases (NIAID), NHLBI, and NIAMS.
Keywords
- MOLIMMUNO
- SYSBIO