Journal
MOLECULAR MEDICINE
Volume 18, Issue 10, Pages 1360-1362Publisher
FEINSTEIN INST MED RES
DOI: 10.2119/molmed.2012.00314
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Funding
- National Institutes of Health [R01CA160417]
- University of Pittsburgh
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High mobility group box 1 (HMGB1), the prototypic damage-associated molecular pattern molecule, is released at sites of inflammation and/or tissue damage. There, it promotes cytokine production and chemokine production/cell migration. New work shows that the redox status of HMGB1 distinguishes its cytokine-inducing and chemokine activity. Reduced all-thiol-HMGB1 has sole chemokine activity whereas disulfide-HMGB1 has only cytokine activity and oxidized, denatured HMGB1 has neither. Autophagy (programmed cell survival) and apoptosis (programmed cell death) have been implicated in controlling both innate and adaptive immune functions. Reduced HMGB1 protein promotes autophagy, whereas oxidized HMGB1 promotes apoptosis. Thus, the differential activity of HMGB1 in immunity inflammation and cell death depends on the cellular redox status within tissues. Online address: http://www.molmed.org doi: 10.2119/molmed.2012.00314
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