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  • 1
    Publication Date: 2012-09-18
    Description: Interferon regulatory factor 4 (IRF4) and IRF8 regulate B, T, macrophage, and dendritic cell differentiation. They are recruited to cis-regulatory Ets-IRF composite elements by PU.1 or Spi-B. How these IRFs target genes in most T cells is enigmatic given the absence of specific Ets partners. Chromatin immunoprecipitation sequencing in T helper 17 (T(H)17) cells reveals that IRF4 targets sequences enriched for activating protein 1 (AP-1)-IRF composite elements (AICEs) that are co-bound by BATF, an AP-1 factor required for T(H)17, B, and dendritic cell differentiation. IRF4 and BATF bind cooperatively to structurally divergent AICEs to promote gene activation and T(H)17 differentiation. The AICE motif directs assembly of IRF4 or IRF8 with BATF heterodimers and is also used in T(H)2, B, and dendritic cells. This genomic regulatory element and cognate factors appear to have evolved to integrate diverse immunomodulatory signals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Glasmacher, Elke -- Agrawal, Smita -- Chang, Abraham B -- Murphy, Theresa L -- Zeng, Wenwen -- Vander Lugt, Bryan -- Khan, Aly A -- Ciofani, Maria -- Spooner, Chauncey J -- Rutz, Sascha -- Hackney, Jason -- Nurieva, Roza -- Escalante, Carlos R -- Ouyang, Wenjun -- Littman, Dan R -- Murphy, Kenneth M -- Singh, Harinder -- RC1 AI087266/AI/NIAID NIH HHS/ -- RC4 AI092765/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2012 Nov 16;338(6109):975-80. doi: 10.1126/science.1228309. Epub 2012 Sep 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Discovery Immunology, Genentech, Incorporated, South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22983707" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Basic-Leucine Zipper Transcription Factors/metabolism ; Cell Differentiation/genetics ; Chromatin Immunoprecipitation ; Humans ; Immunomodulation/*genetics ; Interferon Regulatory Factors/*metabolism ; Mice ; Mice, Inbred C57BL ; *Regulatory Elements, Transcriptional ; Th17 Cells/*immunology ; Transcription Factor AP-1/*metabolism ; *Transcriptional Activation
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2012-09-21
    Description: The AP1 transcription factor Batf3 is required for homeostatic development of CD8alpha(+) classical dendritic cells that prime CD8 T-cell responses against intracellular pathogens. Here we identify an alternative, Batf3-independent pathway in mice for CD8alpha(+) dendritic cell development operating during infection with intracellular pathogens and mediated by the cytokines interleukin (IL)-12 and interferon-gamma. This alternative pathway results from molecular compensation for Batf3 provided by the related AP1 factors Batf, which also functions in T and B cells, and Batf2 induced by cytokines in response to infection. Reciprocally, physiological compensation between Batf and Batf3 also occurs in T cells for expression of IL-10 and CTLA4. Compensation among BATF factors is based on the shared capacity of their leucine zipper domains to interact with non-AP1 factors such as IRF4 and IRF8 to mediate cooperative gene activation. Conceivably, manipulating this alternative pathway of dendritic cell development could be of value in augmenting immune responses to vaccines.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3482832/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3482832/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tussiwand, Roxane -- Lee, Wan-Ling -- Murphy, Theresa L -- Mashayekhi, Mona -- KC, Wumesh -- Albring, Jorn C -- Satpathy, Ansuman T -- Rotondo, Jeffrey A -- Edelson, Brian T -- Kretzer, Nicole M -- Wu, Xiaodi -- Weiss, Leslie A -- Glasmacher, Elke -- Li, Peng -- Liao, Wei -- Behnke, Michael -- Lam, Samuel S K -- Aurthur, Cora T -- Leonard, Warren J -- Singh, Harinder -- Stallings, Christina L -- Sibley, L David -- Schreiber, Robert D -- Murphy, Kenneth M -- AI076427-02/AI/NIAID NIH HHS/ -- P30 CA91842/CA/NCI NIH HHS/ -- R01 AI036629/AI/NIAID NIH HHS/ -- R01 AI076427/AI/NIAID NIH HHS/ -- R01 CA043059/CA/NCI NIH HHS/ -- T32 AI007163/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2012 Oct 25;490(7421):502-7. doi: 10.1038/nature11531. Epub 2012 Sep 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology and Immunology, Washington University School of Medicine, 660 South Euclid Avenue, St Louis, Missouri 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22992524" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen Presentation ; Antigens, CD/metabolism ; Antigens, CD8/immunology/metabolism ; Basic-Leucine Zipper Transcription ; Factors/chemistry/deficiency/genetics/*metabolism ; CD4-Positive T-Lymphocytes/cytology/immunology ; CTLA-4 Antigen/metabolism ; Cell Differentiation ; Cell Line, Tumor ; Cell Lineage ; Dendritic Cells/*cytology/immunology/*metabolism ; Female ; Fibrosarcoma/immunology/metabolism/pathology ; Gene Expression Regulation ; Integrin alpha Chains/metabolism ; Interferon Regulatory Factors/deficiency/genetics/*metabolism ; Interleukin-10/metabolism ; Interleukin-12/immunology/metabolism ; Leucine Zippers ; Male ; Mice ; Mice, Inbred C57BL ; Neoplasm Transplantation ; Oncogene Protein p65(gag-jun)/metabolism ; Protein Binding ; Protein Structure, Tertiary ; Repressor Proteins/deficiency/genetics ; T-Lymphocytes, Helper-Inducer/cytology/immunology/metabolism ; Toxoplasma/immunology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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