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PDL1 is expressed in the islets of people with type 1 diabetes and is up-regulated by interferons-α and-γ via IRF1 induction

التفاصيل البيبلوغرافية
العنوان: PDL1 is expressed in the islets of people with type 1 diabetes and is up-regulated by interferons-α and-γ via IRF1 induction
المؤلفون: Colli, Maikel L., Hill, Jessica L. E., Marroquí, Laura, Chaffey, Jessica, Dos Santos, Reinaldo S., Leete, Pia, Coomans de Brachène, Alexandra, Paula, Flavia M. M., Op de Beeck, Anne, Castela, Angela, Marselli, Lorella, Krogvold, Lars, Dahl-Jorgensen, Knut, Marchetti, Piero, Morgan, Noel G., Richardson, Sarah J., Eizirik, Décio L.
المساهمون: Colli, Maikel L., Hill, Jessica L. E., Marroquí, Laura, Chaffey, Jessica, Dos Santos, Reinaldo S., Leete, Pia, Coomans de Brachène, Alexandra, Paula, Flavia M. M., Op de Beeck, Anne, Castela, Angela, Marselli, Lorella, Krogvold, Lar, Dahl-Jorgensen, Knut, Marchetti, Piero, Morgan, Noel G., Richardson, Sarah J., Eizirik, Décio L.
سنة النشر: 2018
المجموعة: ARPI - Archivio della Ricerca dell'Università di Pisa
مصطلحات موضوعية: CD274, Immune checkpoint inhibitor, IRF1, Pancreatic beta cell, Pancreatic islet, PDL-1, PDL1, Type 1 diabete, Adolescent, Adult, B7-H1 Antigen, Biomarker, Cell Line, Child, Preschool, Diabetes Mellitus, Type 1, Human, Insulin-Secreting Cell, Interferon Regulatory Factor-1, Interferon-alpha, Interferon-gamma, Islets of Langerhan, Middle Aged, Young Adult, Gene Expression Regulation, Biochemistry, Genetics and Molecular Biology (all)
الوصف: Background: Antibodies targeting PD-1 and its ligand PDL1 are used in cancer immunotherapy but may lead to autoimmune diseases, including type 1 diabetes (T1D). It remains unclear whether PDL1 is expressed in pancreatic islets of people with T1D and how is it regulated. Methods: The expression of PDL1, IRF1, insulin and glucagon was evaluated in samples of T1D donors by immunofluorescence. Cytokine-induced PDL1 expression in the human beta cell line, EndoC-βH1, and in primary human pancreatic islets was determined by real-time RT-PCR, flow cytometry and Western blot. Specific and previously validated small interference RNAs were used to inhibit STAT1, STAT2, IRF1 and JAK1 signaling. Key results were validated using the JAK inhibitor Ruxolitinib. Findings: PDL1 was present in insulin-positive cells from twelve T1D individuals (6 living and 6 deceased donors) but absent from insulin-deficient islets or from the islets of six non-diabetic controls. Interferons-α and -γ, but not interleukin-1β, induced PDL1 expression in vitro in human islet cells and EndoC-βH1 cells. Silencing of STAT1 or STAT2 individually did not prevent interferon-α-induced PDL1, while blocking of JAKs – a proposed therapeutic strategy for T1D – or IRF1 prevented PDL1 induction. Interpretation: These findings indicate that PDL1 is expressed in beta cells from people with T1D, possibly to attenuate the autoimmune assault, and that it is induced by both type I and II interferons via IRF1.
نوع الوثيقة: article in journal/newspaper
وصف الملف: ELETTRONICO
اللغة: English
العلاقة: info:eu-repo/semantics/altIdentifier/pmid/30269996; info:eu-repo/semantics/altIdentifier/wos/WOS:000447685300041; volume:36; firstpage:367; lastpage:375; numberofpages:9; journal:EBIOMEDICINE; info:eu-repo/grantAgreement/EC/H2020/115797 667191; http://hdl.handle.net/11568/954955Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85054193057; https://www.sciencedirect.com/science/article/pii/S2352396418303980Test
DOI: 10.1016/j.ebiom.2018.09.040
الإتاحة: https://doi.org/10.1016/j.ebiom.2018.09.040Test
http://hdl.handle.net/11568/954955Test
https://www.sciencedirect.com/science/article/pii/S2352396418303980Test
حقوق: info:eu-repo/semantics/openAccess
رقم الانضمام: edsbas.454784BF
قاعدة البيانات: BASE
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