Human alpha 1-antitrypsin attenuates injury-induced Inflammation through interacting with high mobility group box-1 (HMGB1)

David E. Ohayon, Ronen Schuster, Mark I. Mizrahi, Yotann Lior, Boris M. Baranovski, Galit Shahaf, Eli C. Lewis

Research output: Contribution to journalMeeting Abstractpeer-review

Abstract

HMGB1 is involved in pathologies such as cellular injury and autoimmunity. Indeed, upon binding to immune-related receptors, HMGB1 promotes an inflammatory response, such as that might take part in pancreatic islet destruction during both autoimmune diabetes and islet transplant rejection. Specifically, elevated circulating HMGB1 levels were reported in patients with type 1 diabetes, and increased release of HMGB1 was found to correlate with injury degree and islet allograft survival. The anti-inflammatory and immune-modulatory acute-phase protein human α1-antitrypsin (hAAT) promotes islet survival in both transplantation and autoimmune diabetes models. While AAT binds to damage-released proteins, such as gp96 and HSP70, its tissue protective mechanism remains poorly understood. We now extend this observation that AAT protective activity is related to its interaction with HMGB1. Clinical-grade AAT …
Original languageEnglish
Pages (from-to)82.31-82.31
Number of pages1
JournalJournal of Immunology
Volume198
Issue numberSupplement1
StatePublished - 1 May 2017

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