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Sabouri, S.* ; Benkahla, M.A.* ; Kiosses, W.B.* ; Rodriguez-Calvo, T. ; Zapardiel-Gonzalo, J. ; Castillo, E.* ; Von Herrath, M.G.*

Human herpesvirus-6 is present at higher levels in the pancreatic tissues of donors with type 1 diabetes.

J. Autoimmun. 107:102378 (2020)
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Open Access Gold (Paid Option)
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Human herpesvirus-6 (HHV-6) is a ubiquitous pathogen associated with nervous and endocrine autoimmune disorders. The aim of this study was to investigate the presence of HHV-6 in pancreatic tissue sections from nondiabetic, auto-antibody positive (AAB +), and donors with type 1 diabetes (T1D) and explore whether there is any association between HHV-6 and MHC class I hyperexpression and CD8 T cell infiltration.HHV-6 DNA was detected by PCR and its protein was examined by indirect immunofluorescence assay followed by imaging using high-resolution confocal microscopy. Viral DNA (U67) was found in most pancreata of non-diabetic (3 out of 4), AAB+ (3 out of 5) and T1D donors (6 out of 7). Interestingly, HHV-6 glycoprotein B (gB) was more expressed in islets and exocrine pancreas of donors with T1D. However, gB expression was not directly associated with other pathologies. Out of 20 islets with high gB expression, only 3 islets (15%) showed MHC class I hyperexpression. Furthermore, no correlation was found between gB expression and CD8 T cell infiltration on a per-islet basis in any of the groups.Our observations indicate that HHV-6 DNA and protein are present in the pancreas of non-diabetic subjects but gB expression is higher in the pancreas of donors with T1D. The possible role of HHV-6 as a contributory factor for T1D should therefore be further investigated.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Human Herpesvirus-6 ; Type 1 Diabetes ; Environmental Factors; Cells; Hyperexpression; Infections; Molecules; Viruses; 6b
ISSN (print) / ISBN 0896-8411
e-ISSN 0896-8411
Quellenangaben Volume: 107, Issue: , Pages: , Article Number: 102378 Supplement: ,
Publisher Elsevier
Publishing Place 24-28 Oval Rd, London Nw1 7dx, England
Non-patent literature Publications
Reviewing status Peer reviewed