Abstract
High-mobility group box protein 1 (HMGB1) is a nonhistone nuclear protein that has a dual function. Inside the cell, HMGB1 binds DNA, regulating transcription and determining chromosomal architecture. Outside the cell, HMGB1 activates the innate system and mediates a wide range of physiological and pathological responses. HMGB1 exerts these actions through differential engagement of multiple surface receptors, including Toll-like receptor (TLR)2, TLR4, and receptor for advanced glycation end products (RAGE). HMGB1 is implicated as a late mediator of sepsis and is also involved in inflammatory and autoimmune diseases, such as rheumatoid arthritis and systemic lupus erythematosus. Interestingly, HMGB1 was associated with tumor progression, becoming a potential therapeutic target, due to its involvement in the resistance to chemotherapy. Its implication on the pathogenesis of systemic vasculitis and inflammatory bowel diseases has also been evaluated. Moreover, it regulates neuroinflammation after traumatic brain injuries or cerebral infectious diseases. The aim of this review is to analyze these different roles of HMGB1, both in physiological and pathological conditions, discussing clinical and scientific implications in the field of pediatrics. Conclusion: HMGB1 plays a key role in several pediatric diseases, opening new scenarios for diagnostic biomarkers and therapeutic strategies development.
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Abbreviations
- AA:
-
Acute appendicitis
- AGE:
-
Advanced glycation end products
- AN:
-
Anorexia nervosa
- ANCA:
-
Anti-neutrophil cytoplasmic antibodies
- CSF:
-
Cerebrospinal fluid
- CSS:
-
Churg–Strauss syndrome
- CRP:
-
C-reactive protein
- CD:
-
Crohn’s disease
- DAMP:
-
Damage-associated molecular pattern
- DCs:
-
Dendritic cells
- HMGB1:
-
High-mobility group box 1
- KD:
-
Kawasaki disease
- JIA:
-
Juvenile idiopathic arthritis
- IC:
-
Immune complexes
- IBD:
-
Inflammatory bowel diseases
- IFN:
-
Interferon
- IL:
-
Interleukin
- MPA:
-
Microscopic polyangiitis
- MAPK:
-
Mitogen-activated protein kinases
- NEC:
-
Necrotizing enterocolitis
- NOD:
-
Nonobese diabetic
- NF-κB:
-
Nuclear factor-kappa B
- p-ANCAs:
-
Perinuclear anti-neutrophil cytoplasmic antibodies
- RAGE:
-
Receptor for advanced glycation end products
- RA:
-
Rheumatoid arthritis
- SLE:
-
Systemic lupus erythematosus
- TIM-3:
-
T cell immunoglobulin and mucin domain-3
- TLR:
-
Toll-like receptor
- TBI:
-
Traumatic brain injury
- TGF:
-
Tumor growth factor
- TNF:
-
Tumor necrosis factor
- T1D:
-
Type 1 diabetes
- UC:
-
Ulcerative colitis
- WG:
-
Wegener granulomatosis
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Chirico, V., Lacquaniti, A., Salpietro, V. et al. High-mobility group box 1 (HMGB1) in childhood: from bench to bedside. Eur J Pediatr 173, 1123–1136 (2014). https://doi.org/10.1007/s00431-014-2327-1
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DOI: https://doi.org/10.1007/s00431-014-2327-1