A role for lipid bodies in the cross-presentation of phagocytosed antigens by MHC class I in dendritic cells.
A role for lipid bodies in the cross-presentation of phagocytosed antigens by MHC class I in dendritic cells.
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DOI:
10.1016/j.immuni.2009.06.022
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发表时间:
2009-08-21
期刊:
影响因子:
32.4
通讯作者:
Guermonprez, Pierre
中科院分区:
文献类型:
--
作者:
Bougneres, Laurence;Helft, Julie;Tiwari, Sangeeta;Vargas, Pablo;Chang, Benny Hung-Junn;Chan, Lawrence;Campisi, Laura;Lauvau, Gregoire;Hugues, Stephanie;Kumar, Pradeep;Kamphorst, Alice O.;Dumenil, Ana-Maria Lennon;Nussenzweig, Michel;MacMicking, John D.;Amigorena, Sebastian;Guermonprez, Pierre
Dendritic cells (DCs) have the striking ability to cross-present exogenous antigens in association with MHC class I to CD8+ T cells. However, the intracellular pathways underlying cross-presentation remain ill-defined. Current models involve cytosolic proteolysis of antigens by the proteasome and TAP-dependent import into Endoplasmic Reticulum (ER) or phagosomal lumen. Here, we show that DCs express an ER-resident 47kDa immune-related GTPase, Irgm3. Irgm3 resides on ER and lipid body (LB) membranes where it binds the LB coat component ADRP. Genetic removal of either Irgm3 or ADRP leads to defects in LB formation in DCs and severely impairs cross-presentation of phagocytozed antigens to CD8+ but not antigen presentation to CD4+ T cells. We thus define a new role for LB organelles in regulating cross-presentation of exogenous antigens to CD8+ T lymphocytes in DCs.
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影响因子:
2.3
作者:
Fujimoto, Toyoshi;Ohsaki, Yuki;Cheng, Jinglei;Suzuki, Michitaka;Shinohara, Yuki
通讯作者:
Shinohara, Yuki
影响因子:
30.5
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Ackerman, AL;Kyritsis, C;Cresswell, P
通讯作者:
Cresswell, P
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64.8
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Houde, M;Bertholet, S;Desjardins, M
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Desjardins, M
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15.3
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Bonifaz, L;Bonnyay, D;Mahnke, K;Rivera, M;Nussenzweig, MC;Steinman, RM
通讯作者:
Steinman, RM
影响因子:
6.7
作者:
Martens S;Parvanova I;Zerrahn J;Griffiths G;Schell G;Reichmann G;Howard JC
通讯作者:
Howard JC