The Endotoxin Delivery Protein HMGB1 Mediates Caspase-11-Dependent Lethality in Sepsis.
The Endotoxin Delivery Protein HMGB1 Mediates Caspase-11-Dependent Lethality in Sepsis.
复制标题
内毒素递送蛋白 HMGB1 介导脓毒症中 Caspase-11 依赖性致死率
DOI:
10.1016/j.immuni.2018.08.016
复制
发表时间:
2018-10-16
期刊:
影响因子:
32.4
通讯作者:
Lu B
中科院分区:
文献类型:
--
作者:
Deng M;Tang Y;Li W;Wang X;Zhang R;Zhang X;Zhao X;Liu J;Tang C;Liu Z;Huang Y;Peng H;Xiao L;Tang D;Scott MJ;Wang Q;Liu J;Xiao X;Watkins S;Li J;Yang H;Wang H;Chen F;Tracey KJ;Billiar TR;Lu B
Caspase-11, a cytosolic endotoxin (lipopolysaccharide: LPS) receptor, mediates pyroptosis, a lytic form of cell death. Caspase-11-dependent pyroptosis mediates lethality in endotoxemia, but it is unclear how LPS is delivered into the cytosol for the activation of caspase-11. Here we discovered that hepatocyte-released high mobility group box 1 (HMGB1) was required for caspase-11-dependent pyroptosis and lethality in endotoxemia and bacterial sepsis. Mechanistically, hepatocyte-released HMGB1 bound LPS and targeted its internalization into the lysosomes of macrophages and endothelial cells via the receptor for advanced glycation end-products (RAGE). Subsequently, HMGB1 permeabilized the phospholipid bilayer in the acidic environment of lysosomes. This resulted in LPS leakage into the cytosol and caspase-11 activation. Depletion of hepatocyte HMGB1, inhibition of hepatocyte HMGB1 release, neutralizing extracellular HMGB1, or RAGE deficiency prevented caspase-11-dependent pyroptosis and death in endotoxemia and bacterial sepsis. These findings indicate that HMGB1 interacts with LPS to mediate caspase-11-dependent pyroptosis in lethal sepsis.
登录
查看更多内容
DOI:
10.1159/000315916
发表时间:
2010-01-01
期刊:
ENDOXEMIA AND ENDOTOXIN SHOCK: DISEASE, DIAGNOSIS AND THERAPY
影响因子:
--
作者:
Ronco, Claudio;Piccinni, Pasquale;Kellum, John
通讯作者:
Kellum, John
影响因子:
30.8
作者:
Calogero, S;Grassi, F;Bianchi, ME
通讯作者:
Bianchi, ME
影响因子:
32.4
作者:
Evavold CL;Ruan J;Tan Y;Xia S;Wu H;Kagan JC
通讯作者:
Kagan JC
影响因子:
30.5
作者:
通讯作者:
--
DOI:
10.1126/science.1240988
发表时间:
2013-09-13
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Hagar JA;Powell DA;Aachoui Y;Ernst RK;Miao EA
通讯作者:
Miao EA