Toxoplasma polymorphic effectors determine macrophage polarization and intestinal inflammation.
Toxoplasma polymorphic effectors determine macrophage polarization and intestinal inflammation.
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DOI:
10.1016/j.chom.2011.04.015
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发表时间:
2011-06-16
影响因子:
30.3
通讯作者:
Saeij JP
中科院分区:
文献类型:
--
作者:
Jensen KD;Wang Y;Wojno ED;Shastri AJ;Hu K;Cornel L;Boedec E;Ong YC;Chien YH;Hunter CA;Boothroyd JC;Saeij JP
European and North American strains of the parasite Toxoplasma gondii belong to three distinct clonal lineages, type I, II and III, which differ in virulence. Understanding the basis of Toxoplasma strain differences and how secreted effectors work to achieve chronic infection is a major goal of current research. Here we show that type I and III infected macrophages, a cell type required for host immunity to Toxoplasma, are alternatively activated, while type II infected macrophages are classically activated. The Toxoplasma rhoptry kinase ROP16, which activates STAT6, is responsible for alternative activation. The Toxoplasma dense granule protein GRA15, which activates NF-κB, promotes classical activation by type II parasites. These effectors antagonistically regulate many of the same genes, and mice infected with type II parasites expressing type I ROP16 are protected against Toxoplasma-induced ileitis. Thus, polymorphisms in determinants that modulate macrophage activation influence the ability of Toxoplasma to establish a chronic infection.
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影响因子:
4.4
作者:
Martinez, Fernando O.;Gordon, Siamon;Mantovani, Alberto
通讯作者:
Mantovani, Alberto
影响因子:
4.4
作者:
Mordue, DG;Monroy, F;Sibley, LD
通讯作者:
Sibley, LD
影响因子:
6.7
作者:
John B;Harris TH;Tait ED;Wilson EH;Gregg B;Ng LG;Mrass P;Roos DS;Dzierszinski F;Weninger W;Hunter CA
通讯作者:
Hunter CA
影响因子:
3.1
作者:
Roberts, CW;Ferguson, DJP;Alexander, J
通讯作者:
Alexander, J
影响因子:
2.2
作者:
CORRALIZA, IM;CAMPO, ML;MODOLELL, M
通讯作者:
MODOLELL, M