NDLI: Long-range histone acetylation of the Ifng gene is an essential feature of T cell differentiation

Content Provider	PubMed Central
Author	Zhou, Weisong Chang, Shaojing Aune, Thomas M.
Copyright Year	2004
Abstract	Histone acetylation of promoters precedes activation of many genes. In addition, long-range histone acetylation patterns can be established over many kilobases of the chromatin of linked families of genes that are under common transcriptional control. It is not known whether establishment of long-range histone acetylation patterns is limited to gene families or is a common feature of many genes. The Ifng gene is not known to be a member of a gene family but exhibits complex strain-, cell lineage-, and stimulus-dependent regulation. For example, stimulation of naive T cells through their antigen receptor does not initiate Ifng gene transcription. However, stimulation of naive T cells through their antigen and IL-12 receptors initiates differentiation programs that yield effector cells with 100-fold greater rates of transcription of the Ifng gene after stimulation through the antigen receptor. Here, we demonstrate that these differentiation programs establish long-range histone hyperacetylation patterns that extend at least 50 kb in both upstream and downstream directions of the Ifng gene. Establishment of these histone acetylation patterns and Ifng gene expression is relatively IL-12-independent in T cells from autoimmuneprone nonobese diabetic mice. These results indicate that gene expression programs that mediate T cell differentiation are regulated by long-range histone acetylation patterns and that defective control of these patterns may contribute to development of autoimmunity.
Related Links	http://dx.doi.org/10.1073/pnas.0306002101
Ending Page	2445
Page Count	6
Starting Page	2440
File Format	PDF
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	8
Volume Number	101
Language	English
Publisher	National Academy of Sciences
Publisher Date	2004-02-24
Access Restriction	Open
Rights Holder	National Academy of Sciences
Subject Keyword	General Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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Long-range histone acetylation of the Ifng gene is an essential feature of T cell differentiation