Programmed cell death-1 deficiency exacerbates T cell activation and atherogenesis despite expansion of regulatory T cells in atherosclerosis-prone mice.
Programmed cell death-1 deficiency exacerbates T cell activation and atherogenesis despite expansion of regulatory T cells in atherosclerosis-prone mice.
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DOI:
10.1371/journal.pone.0093280
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Zernecke A
中科院分区:
文献类型:
--
作者:
Cochain C;Chaudhari SM;Koch M;Wiendl H;Eckstein HH;Zernecke A
T cell activation represents a double-edged sword in atherogenesis, as it promotes both pro-inflammatory T cell activation and atheroprotective Foxp3+ regulatory T cell (Treg) responses. Here, we investigated the role of the co-inhibitory receptor programmed cell death-1 (PD-1) in T cell activation and CD4+ T cell polarization towards pro-atherogenic or atheroprotective responses in mice. Mice deficient for both low density lipoprotein receptor and PD-1 (Ldlr−/−Pd1−/−) displayed striking increases in systemic CD4+ and CD8+ T cell activation after 9 weeks of high fat diet feeding, associated with an expansion of both pro-atherogenic IFNγ-secreting T helper 1 cells and atheroprotective Foxp3+ Tregs. Importantly, PD-1 deficiency did not affect Treg suppressive function in vitro. Notably, PD-1 deficiency exacerbated atherosclerotic lesion growth and entailed a massive infiltration of T cells in atherosclerotic lesions. In addition, aggravated hypercholesterolemia was observed in Ldlr−/−Pd1−/− mice. In conclusion, we here demonstrate that although disruption of PD-1 signaling enhances both pro- and anti-atherogenic T cell responses in Ldlr−/− mice, pro-inflammatory T cell activation prevails and enhances dyslipidemia, vascular inflammation and atherosclerosis.
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影响因子:
15.9
作者:
Gotsman, Israel;Grabie, Nir;Lichtman, Andrew H.
通讯作者:
Lichtman, Andrew H.
影响因子:
82.9
作者:
Ait-Oufella, H;Salomon, BL;Mallat, Z
通讯作者:
Mallat, Z
DOI:
10.1161/atvbaha.111.224709
发表时间:
2011-05
期刊:
Arteriosclerosis, thrombosis, and vascular biology
影响因子:
--
作者:
Bu DX;Tarrio M;Maganto-Garcia E;Stavrakis G;Tajima G;Lederer J;Jarolim P;Freeman GJ;Sharpe AH;Lichtman AH
通讯作者:
Lichtman AH
影响因子:
15.9
作者:
Klingenberg, Roland;Gerdes, Norbert;Hansson, Goran K.
通讯作者:
Hansson, Goran K.
DOI:
10.1084/jem.20090847
发表时间:
2009-12-21
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Francisco LM;Salinas VH;Brown KE;Vanguri VK;Freeman GJ;Kuchroo VK;Sharpe AH
通讯作者:
Sharpe AH