Table 2 | Experimental disease models responding to therapy targeting HMGB1 Model HMGB1 antagonist (reference) Result Arthritis Anti-HMGB1 antibodies (S41–S44) Reduced inflammation and tissue Recombinant HMGB1 A box (S41,S43) destruction Blockade of RAGE-signaling (S45) Thrombomodulin (S46) Neuropathic pain Anti-HMGB1 antibodies (S47,S48) Alleviation of pain. Endotoxemia Anti-HMGB1 antibodies (S49) Protection from lethality. Thrombomodulin (S50, S51) Sepsis Anti-HMGB1 antibodies (S49,S52) Improved survival (even after Recombinant HMGB1 A box (S53) administration 24 h after onset of disease) Blockade of RAGE-signaling (S54) representing a uniquely wide therapeutic window. Pancreatitis Anti-HMGB1 antibodies (S55) Decreased severity of pancreatitis. Recombinant HMGB1 A box (S56) Colitis Anti-HMGB1 antibodies (S57,S58) Reduced inflammation and tumor incidence Hemorrhagic shock Anti-HMGB1 antibodies (S59,S60) Improved survival and reduced organ dysfunction. Stroke Anti-HMGB1 antibodies (S61,S62) Marked neuroprotection and reduced Recombinant HMGB1 A box (S62) magnitude of cell death. Epilepsy Recombinant HMGB1 A box (S63) Anticonvulsant effects. Ischemia- Anti-HMGB1 antibodies (S64) Attenuation of shock and tissue damage reperfusion injury Recombinant HMGB1 A box (S65) and reduced cytokine release. Atherosclerosis Anti-HMGB1 antibodies (S66) Prevention of disease development Myocardial Anti-HMGB1 antibodies (S67) Increased infarcts. Recombinant HMGB1 A box (S65) Attenuation of tissue damage. Anti-HMGB1 antibodies (S68) Enhances allograft survival. Recombinant HMGB1 A box (S69) Enhances allograft survival. Respiratory Anti-HMGB1 antibodies (S70–S72) Reduced inflammation and development disorders Recombinant HMGB1 A box (S73) of pulmonary fibrosis. Acetaminophen- Anti-HMGB1 antibodies (S74) Improved survival. infarction Transplantation induced liver Reduced hepatotoxicity. damage Abbreviation: RAGE, receptor for advanced glycation end products. S41. Kokkola, R. et al. Successful treatment of collagen-induced arthritis in mice and rats by targeting extracellular high mobility group box chromosomal protein 1 activity. Arthritis Rheum. 48, 2052–2058 (2003). S42. Hamada, T. et al. Extracellular high mobility group box chromosomal protein 1 is a coupling factor for hypoxia and inflammation in arthritis. Arthritis Rheum. 58, 2675–2685 (2008). S43. Östberg, T. et al. Protective targeting of high mobility group box chromosomal protein 1 in a spontaneous arthritis model. Arthritis Rheum. 62, 2963–2972 (2010). S44. Schierbeck, H. et al. Monoclonal anti-HMGB1.antibody protection in two experimental arthritis models. Mol. Med. 17, 1039–1044 (2011). 1 S45. Hofmann, M. A. et al. RAGE and arthritis: the G82S polymorphism amplifies the inflammatory response. Genes Immun. 3, 123–135 (2002). S46. Van de Wouwer, M. et al. The lectin-like domain of thrombomodulin interferes with complement activation and protects against arthritis. J. Thromb. Haemost. 4, 1813– 1824 (2006). S47. Otoshi, K., Kikuchi, S., Kato, K., Sekiguchi, M., Konno, S. Anti-HMGB1 neutralization antibody improves pain-related behavior induced by application of autologous nucleus pulposus onto nerve roots in rats. Spine (Phila Pa 1976) 36, E692-E698 (2011). S48. Shibasaki, M. et al. Induction of high mobility group box-1 in dorsal root ganglion contributes to pain hypersensitivity after peripheral nerve injury. Pain 149, 514–521 (2010). S49. Wang, H. et al. HMG-1 as a late mediator of endotoxin lethality in mice. Science 285, 248–251 (1999). S50. Abeyama, K. et al. The N-terminal domain of thrombomodulin sequesters high-mobility group-B1 protein, a novel antiinflammatory mechanism. J. Clin. Investig. 115, 1267–1274 (2005). S51. Nagato, M., Okamoto, K., Abe, Y., Higure, A., Yamaguchi, K. Recombinant human soluble thrombomodulin decreases the plasma high-mobility group box-1 protein levels, whereas improving the acute liver injury and survival rates in experimental endotoxemia. Crit. Care. Med. 37, 2181–2186 (2009). S52. Qin, S. et al. Role of HMGB1 in apoptosis-mediated sepsis lethality. J. Exp. Med. 203, 1637–1642 (2006). S53. Yang, H. et al. Reversing established sepsis with antagonists of endogenous high- mobility group Box 1. Proc. Natl. Acad. Sci. USA 101, 296–301 (2004). S54. Lutterloh, E. C. et al. Inhibition of the RAGE products increases survival in experimental models of severe sepsis and systemic infection. Crit. Care 11, R122 (2007). S55. Sawa, H. et al. Blockade of high mobility group box-1 protein attenuates experimental severe acute pancreatitis. World J. Gastroenterol. 12, 7666–7670 (2006). S56. Yuan, H. et al. Protective effect of HMGB1 A box on organ injury of acute pancreatitis in mice. Pancreas 38, 143–48 (2009). S57. Maeda, S. et al. Essential roles of high-mobility group Box 1 in the development of murine colitis and colitis-associated cancer. Biochem. Biophys. Res. Commun. 360, 394–400 (2007). Yang, R. et al. Bile high-mobility group Box 1 contributes to gut barrier S58. dysfunction in experimental endotoxemia. Am. J. Physiol. Regul. Integr. Comp. Physiol. 297, R362–R369(2009). S59. Yang, R. et al. Anti-HMGB1 neutralizing antibody ameliorates gut barrier dysfunction and improves survival after hemorrhagic shock. Mol. Med. 12, 105–114 (2006). S60. Kim, J. Y. et al. HMGB1 contributes to the development of acute lung injury after hemorrhage. Am. J. Physiol. Lung Cell Mol. Physiol. 288, L958-L965 (2005). S61. Liu, K. et al. Anti-high mobility group Box 1 monoclonal antibody ameliorates brain infarction induced by transient ischemia in rats. FASEB J. 21, 3904–3916 (2007). S62. Muhammad, S. et al. The HMGB1 receptor RAGE mediates ischemic brain damage. J. Neurosci. 28, 12023–12031 (2008). S63. Maroso M. et al. Toll-like receptor 4 and high-mobility group box-1 are involved in ictogenesis and can be targeted to reduce seizures. Nat. Med. 16, 413–419 (2010). 2 S64. Tsung, A. et al. The nuclear factor HMGB1 mediates hepatic injury after murine liver ischemia-reperfusion. J. Exp. Med. 201, 1135–1143 (2005). S65. Andrassy, M. et al. High-mobility group box-1 in ischemia-reperfusion injury of the heart. Circulation 117, 3216–3226 (2008). S66. Kanellakis, P. et al. High-mobility group box protein 1 neutralization reduces development of diet-induced atherosclerosis in apolipoprotein e-deficient mice. Arterioscler. Thromb. Vasc. Biol. 31, 313–319 (2011). S67. Oozawa, S. et al. Effects of HMGB1 on ischemia-reperfusion injury in the rat heart. Circ. J. 72, 1178–1184 (2008). S68. Gao, Q. et al. TLR4 mediates early graft failure after intraportal islet transplantation. Am. J. Transplant. 10, 1588–1596 (2010). S69. Huang Y. et al. Extracellular HMGB1 functions as an innate immune-mediator implicated in murine cardiac allograft acute rejection. Am. J. Transplant. 7, 799–808 (2007). S70. Abraham, E., Arcaroli, J., Carmody, A., Wang, H., Tracey, K. J. HMG-1 as a mediator of acute lung inflammation. J. Immunol. 165, 2950–2954 (2000). S71. Ogawa, E. N. et al. Contribution of high-mobility group box-1 to the development of ventilator-induced lung injury. Am. J. Respir. Crit. Care Med. 174, 400– 407 (2006). S72. Ueno, H. et al. Contributions of high mobility group box protein in experimental and clinical acute lung injury. Am. J. Respir. Crit. Care Med. 170, 1310– 1316 (2004). S73. Gong, Q. et al. Protective effect of antagonist of high-mobility group Box 1 on lipopolysaccharide-induced acute lung injury in mice. Scand. J. Immunol. 69, 29–35 (2009). S74. Antoine, D. J., Williams, D. P., Kipar, A., Laverty, H., Park, B. K. Diet restriction inhibits apoptosis and HMGB1 oxidation and promotes inflammatory cell recruitment during acetaminophen hepatotoxicity. Mol. Med. 16, 479–490 (2010). 3