Caspase-11 promotes the fusion of phagosomes harboring pathogenic bacteria with lysosomes by modulating actin polymerization.
Caspase-11 promotes the fusion of phagosomes harboring pathogenic bacteria with lysosomes by modulating actin polymerization.
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DOI:
10.1016/j.immuni.2012.05.001
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发表时间:
2012-07-27
期刊:
影响因子:
32.4
通讯作者:
Amer AO
中科院分区:
文献类型:
--
作者:
Akhter A;Caution K;Abu Khweek A;Tazi M;Abdulrahman BA;Abdelaziz DH;Voss OH;Doseff AI;Hassan H;Azad AK;Schlesinger LS;Wewers MD;Gavrilin MA;Amer AO
Inflammasomes are multiprotein complexes that include members of the NLR (nucleotide-binding domain leucine-rich repeat containing) family and caspase-1. Once bacterial molecules are sensed within the macrophage, the inflammasome is assembled mediating the activation of caspase-1. Caspase-11 mediates caspase-1 activation in response to lipopolysaccharide and bacterial toxins. Yet, its role during bacterial infection is unknown. Here, we demonstrated that caspase-11 was dispensable for caspase-1 activation in response to Legionella, Salmonella, Francisella and Listeria. We also determined that active mouse caspase-11 was required for restriction of L. pneumophila infection. Similarly, human caspase-4 and 5, homologs of mouse caspase-11, cooperated to restrict L. pneumophila infection in human macrophages. Caspase-11 promoted the fusion of the L. pneumophila- vacuole with lysosomes by modulating actin polymerization through cofilin. However, caspase-11 was dispensable for the fusion of lysosomes with phagosomes containing non-pathogenic bacteria, uncovering a fundamental difference in the trafficking of phagosomes according to their cargo.
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DOI:
10.1074/jbc.m110.197681
发表时间:
2011-02-04
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Abdelaziz DH;Gavrilin MA;Akhter A;Caution K;Kotrange S;Khweek AA;Abdulrahman BA;Grandhi J;Hassan ZA;Marsh C;Wewers MD;Amer AO
通讯作者:
Amer AO
DOI:
10.1084/jem.158.6.2108
发表时间:
1983-12-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Horwitz MA
通讯作者:
Horwitz MA
DOI:
10.1073/pnas.0504271103
发表时间:
2006-01-03
影响因子:
11.1
作者:
Gavrilin, MA;Bouakl, IJ;Wewers, MD
通讯作者:
Wewers, MD
影响因子:
21.3
作者:
Li, Juying;Brieher, William M.;Yuan, Junying
通讯作者:
Yuan, Junying
影响因子:
32.4
作者:
Hughes T;Becknell B;Freud AG;McClory S;Briercheck E;Yu J;Mao C;Giovenzana C;Nuovo G;Wei L;Zhang X;Gavrilin MA;Wewers MD;Caligiuri MA
通讯作者:
Caligiuri MA