Activation of the major histocompatibility complex (MHC) by interferon-gamma (IFN−γ) is a fundamental step in the adaptive immune response to pathogens. Here, we show that reorganization of chromatin loop domains in the MHC is evident within the first 30 min of IFN−γ treatment of fibroblasts, and that further dynamic alterations occur up to 6 h. These very rapid changes occur at genomic sites which are occupied by CTCF and are close to IFN−γ-inducible MHC genes. Early responses to IFN−γ are thus initiated independently of CIITA, the master regulator of MHC class II genes and prepare the MHC for subsequent induction of transcription.
CTCF binds to sites in the major histocompatibility complex that are rapidly reconfigured in response to interferon-gamma
D. Ottaviani,Elliott Lever,Shihong Mao,R. Christova,B. Ogunkolade,T. Jones,J. Szary,Johan Aarum,Muhammad A. Mumin,Christopher A Pieri,S. Krawetz,D. Sheer
Published 2012 in Nucleic Acids Research
ABSTRACT
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- Publication year
2012
- Venue
Nucleic Acids Research
- Publication date
2012-02-25
- Fields of study
Biology, Medicine
- Identifiers
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- Source metadata
Semantic Scholar, PubMed
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