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  • 1
    Publication Date: 2015-04-30
    Description: Inflammation is a beneficial host response to infection but can contribute to inflammatory disease if unregulated. The Th17 lineage of T helper (Th) cells can cause severe human inflammatory diseases. These cells exhibit both instability (they can cease to express their signature cytokine, IL-17A) and plasticity (they can start expressing cytokines typical of other lineages) upon in vitro re-stimulation. However, technical limitations have prevented the transcriptional profiling of pre- and post-conversion Th17 cells ex vivo during immune responses. Thus, it is unknown whether Th17 cell plasticity merely reflects change in expression of a few cytokines, or if Th17 cells physiologically undergo global genetic reprogramming driving their conversion from one T helper cell type to another, a process known as transdifferentiation. Furthermore, although Th17 cell instability/plasticity has been associated with pathogenicity, it is unknown whether this could present a therapeutic opportunity, whereby formerly pathogenic Th17 cells could adopt an anti-inflammatory fate. Here we used two new fate-mapping mouse models to track Th17 cells during immune responses to show that CD4(+) T cells that formerly expressed IL-17A go on to acquire an anti-inflammatory phenotype. The transdifferentiation of Th17 into regulatory T cells was illustrated by a change in their signature transcriptional profile and the acquisition of potent regulatory capacity. Comparisons of the transcriptional profiles of pre- and post-conversion Th17 cells also revealed a role for canonical TGF-beta signalling and consequently for the aryl hydrocarbon receptor (AhR) in conversion. Thus, Th17 cells transdifferentiate into regulatory cells, and contribute to the resolution of inflammation. Our data suggest that Th17 cell instability and plasticity is a therapeutic opportunity for inflammatory diseases.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4498984/" 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/PMC4498984/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gagliani, Nicola -- Amezcua Vesely, Maria Carolina -- Iseppon, Andrea -- Brockmann, Leonie -- Xu, Hao -- Palm, Noah W -- de Zoete, Marcel R -- Licona-Limon, Paula -- Paiva, Ricardo S -- Ching, Travers -- Weaver, Casey -- Zi, Xiaoyuan -- Pan, Xinghua -- Fan, Rong -- Garmire, Lana X -- Cotton, Matthew J -- Drier, Yotam -- Bernstein, Bradley -- Geginat, Jens -- Stockinger, Brigitta -- Esplugues, Enric -- Huber, Samuel -- Flavell, Richard A -- K01 ES025434/ES/NIEHS NIH HHS/ -- K01ES025434/ES/NIEHS NIH HHS/ -- P20 GM103457/GM/NIGMS NIH HHS/ -- P30 DK045735/DK/NIDDK NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2015 Jul 9;523(7559):221-5. doi: 10.1038/nature14452. Epub 2015 Apr 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunobiology, School of Medicine, Yale University, New Haven, 06520, USA. ; Medizinische Klinik und Poliklinik, Universitatsklinikum Hamburg-Eppendorf, Hamburg 20246, Germany. ; 1] Department of Immunobiology, School of Medicine, Yale University, New Haven, 06520, USA [2] Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; 1] Department of Immunobiology, School of Medicine, Yale University, New Haven, 06520, USA [2] Departamento de Biologia Celular y del Desarrollo, Instituto de Fisiologia Celular, Universidad Nacional Autonoma de Mexico, D.F. Mexico 04510, Mexico (P.L.-L.); Department of Cell Biology, Second Military Medical University, Shanghai 200433, China (X.Z.). ; University of Hawaii Cancer Center, Manoa 96813, USA. ; Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama 35294, USA. ; 1] Department of Biomedical Engineering, Yale University, New Haven, 06520, USA [2] Departamento de Biologia Celular y del Desarrollo, Instituto de Fisiologia Celular, Universidad Nacional Autonoma de Mexico, D.F. Mexico 04510, Mexico (P.L.-L.); Department of Cell Biology, Second Military Medical University, Shanghai 200433, China (X.Z.). ; Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; Department of Biomedical Engineering, Yale University, New Haven, 06520, USA. ; Howard Hughes Medical Institute and Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA. ; Istituto Nazionale di Genetica Molecolare "Romeo ed Enrica Invernizzi", Milan 20122, Italy. ; Division of Molecular Immunology, MRC National Institute for Medical Research, Mill Hill, London NW7 1AA, UK. ; Immunology Institute, Mount Sinai School of Medicine, Icahn Medical Institute, New York, New York, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25924064" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Transdifferentiation ; Female ; Gene Expression Profiling ; Gene Expression Regulation ; Helminthiasis/immunology ; Male ; Mice ; Nippostrongylus/immunology ; Staphylococcal Infections/immunology ; Staphylococcus aureus/immunology ; T-Lymphocytes, Regulatory/*cytology/*immunology ; Th17 Cells/*cytology/*immunology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2013-08-21
    Description: Excessive intake of dietary fats leads to diminished brain dopaminergic function. It has been proposed that dopamine deficiency exacerbates obesity by provoking compensatory overfeeding as one way to restore reward sensitivity. However, the physiological mechanisms linking prolonged high-fat intake to dopamine deficiency remain elusive. We show that administering oleoylethanolamine, a gastrointestinal lipid messenger whose synthesis is suppressed after prolonged high-fat exposure, is sufficient to restore gut-stimulated dopamine release in high-fat-fed mice. Administering oleoylethanolamine to high-fat-fed mice also eliminated motivation deficits during flavorless intragastric feeding and increased oral intake of low-fat emulsions. Our findings suggest that high-fat-induced gastrointestinal dysfunctions play a key role in dopamine deficiency and that restoring gut-generated lipid signaling may increase the reward value of less palatable, yet healthier, foods.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tellez, Luis A -- Medina, Sara -- Han, Wenfei -- Ferreira, Jozelia G -- Licona-Limon, Paula -- Ren, Xueying -- Lam, Tukiet T -- Schwartz, Gary J -- de Araujo, Ivan E -- DC009997/DC/NIDCD NIH HHS/ -- DK020541/DK/NIDDK NIH HHS/ -- DK026687/DK/NIDDK NIH HHS/ -- DK085579/DK/NIDDK NIH HHS/ -- P30 DK026687/DK/NIDDK NIH HHS/ -- UL1RR024139/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2013 Aug 16;341(6147):800-2. doi: 10.1126/science.1239275.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The John B. Pierce Laboratory, New Haven, CT 06519, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23950538" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Appetite ; Corpus Striatum/*metabolism ; Dietary Fats/*administration & dosage ; Dopamine/deficiency/*metabolism ; Endocannabinoids/*administration & dosage/biosynthesis/*physiology ; Energy Intake ; Ethanolamines/*administration & dosage ; Feeding Behavior ; Gastrointestinal Tract/*metabolism ; Homeostasis ; Intestine, Small/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Oleic Acids/*administration & dosage/biosynthesis/*physiology ; PPAR alpha/genetics/metabolism ; Reward ; Signal Transduction ; Vagus Nerve/physiology
    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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  • 3
    Publication Date: 2016-04-02
    Description: Host responses against metazoan parasites or an array of environmental substances elicit type 2 immunity. Despite its protective function, type 2 immunity also drives allergic diseases. The mechanisms that regulate the magnitude of the type 2 response remain largely unknown. Here, we show that genetic ablation of a receptor tyrosine kinase encoded byTyro3in mice or the functional neutralization of its ortholog in human dendritic cells resulted in enhanced type 2 immunity. Furthermore, the TYRO3 agonist PROS1 was induced in T cells by the quintessential type 2 cytokine, interleukin-4. T cell-specificPros1knockouts phenocopied the loss ofTyro3 Thus, a PROS1-mediated feedback from adaptive immunity engages a rheostat, TYRO3, on innate immune cells to limit the intensity of type 2 responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chan, Pamela Y -- Carrera Silva, Eugenio A -- De Kouchkovsky, Dimitri -- Joannas, Leonel D -- Hao, Liming -- Hu, Donglei -- Huntsman, Scott -- Eng, Celeste -- Licona-Limon, Paula -- Weinstein, Jason S -- Herbert, De'Broski R -- Craft, Joseph E -- Flavell, Richard A -- Repetto, Silvia -- Correale, Jorge -- Burchard, Esteban G -- Torgerson, Dara G -- Ghosh, Sourav -- Rothlin, Carla V -- HL004464/HL/NHLBI NIH HHS/ -- HL078885/HL/NHLBI NIH HHS/ -- HL088133/HL/NHLBI NIH HHS/ -- HL104608/HL/NHLBI NIH HHS/ -- HL117004/HL/NHLBI NIH HHS/ -- MD006902/MD/NIMHD NIH HHS/ -- R01 AI089824/AI/NIAID NIH HHS/ -- T32 AI007019/AI/NIAID NIH HHS/ -- T32 GM007205/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2016 Apr 1;352(6281):99-103. doi: 10.1126/science.aaf1358.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunobiology, School of Medicine, Yale University, New Haven, CT 06520, USA. ; Department of Immunobiology, School of Medicine, Yale University, New Haven, CT 06520, USA. Laboratorio de Trombosis Experimental, Instituto de Medicina Experimental, Academia Nacional de Medicina-CONICET, Buenos Aires, 1425, Argentina. ; Department of Pathology, School of Medicine, Yale University, New Haven, CT 06520, USA. ; Department of Medicine, University of California San Francisco, CA 94158, USA. ; Department of Experimental Medicine, University of California San Francisco, CA 94158, USA. ; Department of Immunobiology, School of Medicine, Yale University, New Haven, CT 06520, USA. Department of Internal Medicine (Rheumatology), School of Medicine, Yale University, New Haven, CT 06520, USA. ; Department of Immunobiology, School of Medicine, Yale University, New Haven, CT 06520, USA. Howard Hughes Medical Institute, School of Medicine, Yale University, New Haven, CT 06520, USA. ; Instituto de Investigaciones en Microbiologia y Parasitologia Medica, University of Buenos Aires-CONICET, Buenos Aires, 1121, Argentina. Hospital de Clinicas Jose de San Martin, University of Buenos Aires, 1120, Argentina. ; Center for Research on Neuroimmunological Diseases, Raul Carrea Institute for Neurological Research (FLENI), Buenos Aires 1428, Argentina. ; Department of Medicine, University of California San Francisco, CA 94158, USA. Department of Bioengineering, School of Pharmacy, University of California San Francisco, CA 94158, USA. ; Department of Neurology, School of Medicine, Yale University, New Haven, CT 06520, USA. ; Department of Immunobiology, School of Medicine, Yale University, New Haven, CT 06520, USA. carla.rothlin@yale.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27034374" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptive Immunity/*genetics ; Animals ; Asthma/genetics/*immunology ; Blood Proteins/antagonists & inhibitors/genetics/metabolism ; Dendritic Cells/immunology ; Disease Models, Animal ; Gene Knockout Techniques ; Host-Parasite Interactions/genetics/*immunology ; Humans ; Immunity, Innate/*genetics ; Interleukin-4/immunology/pharmacology ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Nippostrongylus/immunology ; Pyroglyphidae/immunology ; Receptor Protein-Tyrosine Kinases/genetics/*physiology ; Strongylida Infections/immunology ; T-Lymphocytes/immunology
    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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  • 4
  • 5
    Publication Date: 2016-03-31
    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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