Article (Scientific journals)
The inositol phosphatase SHIP-1 inhibits NOD2-induced NF-κB activation by disturbing the interaction of XIAP with RIP2
Condé, Claude; Rambout, Xavier; Lebrun, Marielle et al.
2012In PLoS ONE
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Abstract :
[en] SHIP-1 is an inositol phosphatase predominantly expressed in hematopoietic cells. Over the ten past years, SHIP-1 has been described as an important regulator of immune functions. Here, we characterize a new inhibitory function for SHIP-1 in NOD2 signaling. NOD2 is a crucial cytoplasmic bacterial sensor that activates proinflammatory and antimicrobial responses upon bacterial invasion. We observed that SHIP-1 decreases NOD2-induced NF-κB activation in macrophages. This negative regulation relies on its interaction with XIAP. Indeed, we observed that XIAP is an essential mediator of the NOD2 signaling pathway that enables proper NF-κB activation in macrophages. Upon NOD2 activation, SHIP-1 C-terminal proline rich domain (PRD) interacts with XIAP, thereby disturbing the interaction between XIAP and RIP2 in order to decrease NF-κB signaling.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Condé, Claude ;  Université de Liège - ULiège > GIGA-R : Virologie - Immunologie
Rambout, Xavier ;  Université de Liège - ULiège > Chimie et bio-industries > Biologie cell. et moléc.
Lebrun, Marielle  ;  Université de Liège - ULiège > Département des sciences de la vie > GIGA-R : Virologie et immunologie
Lecat, Aurore ;  Université de Liège - ULiège > GIGA-R : Virologie - Immunologie
Di Valentin, Emmanuel  ;  Université de Liège - ULiège > Département des sciences de la vie > GIGA-R : Virologie et immunologie
Dequiedt, Franck  ;  Université de Liège - ULiège > GIGA-Research
Piette, Jacques ;  Université de Liège - ULiège > Département des sciences de la vie > GIGA-R : Virologie - Immunologie
Gloire, Geoffrey ;  Université de Liège - ULiège > Interface Entreprises-Université
Legrand, Sylvie ;  Université de Liège - ULiège > GIGA-R : Virologie - Immunologie
Language :
English
Title :
The inositol phosphatase SHIP-1 inhibits NOD2-induced NF-κB activation by disturbing the interaction of XIAP with RIP2
Publication date :
2012
Journal title :
PLoS ONE
eISSN :
1932-6203
Publisher :
Public Library of Science, San Franscisco, United States - California
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 June 2012

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