Class II transactivator (CIITA) is sufficient for the inducible expression of major histocompatibility complex class II genes.

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Class II transactivator (CIITA) is sufficient for the inducible expression of major histocompatibility complex class II genes

The class II transactivator (CIITA) has been shown to be required for major histocompatibility complex (MHC) class II gene expression in B cells and its deficiency is responsible for a hereditary MHC class II deficiency. Here we show that CIITA is also involved in the inducible expression of class II genes upon interferon gamma (IFN-gamma) treatment. The expression of CIITA is also inducible wi...

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Class II major histocompatibility complex transactivator (CIITA) inhibits matrix metalloproteinase-9 gene expression.

Matrix metalloproteinases (MMPs) are a family of structurally related proteins with the collective capability to degrade all components of the extracellular matrix. Although MMP-mediated degradation of the extracellular matrix occurs physiologically, numerous pathological conditions exhibit increased MMP levels and excessive matrix degradation. Previous work from our laboratory has shown that i...

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An Isotype-specific Activator of Major Histocompatibility Complex (MHC) Class II Genes That Is Independent of Class II Transactivator

Patients with one type of major histocompatibility complex class II combined immunodeficiency have mutations in a gene termed class II transactivator (CIITA), which coordinately controls the transcription of the three major human class II genes, HLA-DR, -DQ, and -DP. However, the experimentally derived B-lymphoblastoid cell line, clone 13, expresses high levels of HLADQ in the absence of HLA-DR...

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The Piv-Otal Class II Transactivator Promoter Regulates Major Histocompatibility Complex Class II Expression in the Thymus

Recognition of antigen by CD4 ϩ T cells requires presentation of short peptide fragments in the context of het-erodimeric MHC class II molecules (1, 2). Antigen presentation by MHC class II molecules is pivotal to the induction of adaptive immune responses, peripheral tolerance , and central tolerance, as well as being required for CD4 ϩ T cell survival (1–3). Constitutive expression of MHC cla...

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Acetylation by PCAF enhances CIITA nuclear accumulation and transactivation of major histocompatibility complex class II genes.

The class II transactivator (CIITA), the master regulator of the tissue-specific and interferon gamma-inducible expression of major histocompatibility complex class II genes, synergizes with the histone acetylase coactivator CBP to activate gene transcription. Here we demonstrate that in addition to CBP, PCAF binds to CIITA both in vivo and in vitro and enhances CIITA-dependent transcriptional ...

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ژورنال

عنوان ژورنال: Journal of Experimental Medicine

سال: 1994

ISSN: 0022-1007,1540-9538

DOI: 10.1084/jem.180.4.1367