HMGB1 Activates Proinflammatory Signaling via TLR5 Leading to Allodynia.
HMGB1 Activates Proinflammatory Signaling via TLR5 Leading to Allodynia.
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DOI:
10.1016/j.celrep.2016.09.076
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发表时间:
2016-10-18
期刊:
影响因子:
8.8
通讯作者:
Yin H
中科院分区:
文献类型:
--
作者:
Das N;Dewan V;Grace PM;Gunn RJ;Tamura R;Tzarum N;Watkins LR;Wilson IA;Yin H
Infectious and sterile inflammatory diseases are correlated with increased levels of high mobility group box-1 (HMGB1) in tissues and serum. Extracellular HMGB1 is known to activate toll-like receptors (TLRs) 2, 4 and RAGE (receptor for advanced glycation endproducts) in inflammatory conditions. Here we find that TLR5 is also an HMGB1 receptor that was previously overlooked due to lack of functional expression in the cell lines usually used for studying TLR signaling. HMGB1 binding to TLR5 initiates NF-κB signaling pathway activation in a MyD88-dependent manner, resulting in proinflammatory cytokine production and pain enhancement in vivo. Biophysical and in vitro results highlight an essential role for the C-terminal tail region of HMGB1 in facilitating interactions with TLR5. These results suggest that HMGB1-modulated TLR5 signaling is responsible for pain hypersensitivity.
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