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Heat shock protein 60 is a putative endogenous ligand of the toll-like receptor-4 complex
被引:1253
|作者:
Ohashi, K
[1
]
Burkart, V
[1
]
Flohé, S
[1
]
Kolb, H
[1
]
机构:
[1] Univ Dusseldorf, German Diabet Res Inst, D-40225 Dusseldorf, Germany
来源:
关键词:
D O I:
10.4049/jimmunol.164.2.558
中图分类号:
R392 [医学免疫学];
Q939.91 [免疫学];
学科分类号:
100102 ;
摘要:
Human heat shock protein 60 (hsp60) elicits a potent proinflammatory response in cells of the innate immune system and therefore has been proposed as a danger signal of stressed or damaged cells, We report here that macrophages of C3H/HeJ mice, carrying a mutant Toll-like-receptor (Tlr) 4 are nonresponsive to hsp60. Both the induction of TNF-alpha and NO formation were found dependent on a functional Tlr4 whereas stimulation of macrophages by CpG DNA was Tlr4 independent. We conclude that Tlr4 mediates hsp60 signaling. This is the first report of a putative endogenous ligand of the Tlr4 complex.
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页码:558 / 561
页数:4
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