PD-1 suppresses the maintenance of cell couples between cytotoxic T cells and tumor target cells within the tumor
PD-1 suppresses the maintenance of cell couples between cytotoxic T cells and tumor target cells within the tumor
复制标题
PD-1 抑制肿瘤内细胞毒性 T 细胞和肿瘤靶细胞之间细胞配对的维持
DOI:
10.1101/443788
复制
发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Ambler R
中科院分区:
文献类型:
--
作者:
Ambler R
The killing of tumor cells by CD8+T cells is suppressed by the tumor microenvironment, and increased expression of inhibitory receptors, including programmed cell death protein-1 (PD-1), is associated with tumor-mediated suppression of T cells. To find cellular defects triggered by tumor exposure and associated PD-1 signaling, we established an ex vivo imaging approach to investigate the response of antigen-specific, activated effector CD8+tumor-infiltrating lymphocytes (TILs) after interaction with target tumor cells. Although TIL–tumor cell couples readily formed, couple stability deteriorated within minutes. This was associated with impaired F-actin clearing from the center of the cellular interface, reduced Ca2+signaling, increased TIL locomotion, and impaired tumor cell killing. The interaction of CD8+T lymphocytes with tumor cell spheroids in vitro induced a similar phenotype, supporting a critical role of direct T cell–tumor cell contact. Diminished engagement of PD-1 within the tumor, but not acute ex vivo blockade, partially restored cell couple maintenance and killing. PD-1 thus contributes to the suppression of TIL function by inducing a state of impaired subcellular organization.
登录
查看更多内容
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
J. Bear
通讯作者:
J. Bear
DOI:
10.1084/jem.20061890
发表时间:
2007-02-19
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Boissonnas A;Fetler L;Zeelenberg IS;Hugues S;Amigorena S
通讯作者:
Amigorena S
DOI:
10.1186/2051-1426-3-s2-p39
发表时间:
2015-11
期刊:
The Journal of Experimental Medicine
影响因子:
--
作者:
D. Palmer;G. Guittard;Zulmarie Franco;Joseph G Crompton;R. Eil;Shashank J. Patel;Yun Ji;N. van Panhuys;C. Klebanoff;M. Sukumar;D. Clever;A. Chichura;R. Roychoudhuri;R. Varma;E. Wang;L. Gattinoni;F. Marincola;L. Balagopalan;L. Samelson;N. Restifo
通讯作者:
D. Palmer;G. Guittard;Zulmarie Franco;Joseph G Crompton;R. Eil;Shashank J. Patel;Yun Ji;N. van Panhuys;C. Klebanoff;M. Sukumar;D. Clever;A. Chichura;R. Roychoudhuri;R. Varma;E. Wang;L. Gattinoni;F. Marincola;L. Balagopalan;L. Samelson;N. Restifo
影响因子:
11.4
作者:
Erapaneedi, Raghu;Belousov, Vsevolod V.;Kiefer, Friedemann
通讯作者:
Kiefer, Friedemann
影响因子:
10.1
作者:
Beavis, Paul A.;Milenkovski, Nicole;Darcy, Phillip K.
通讯作者:
Darcy, Phillip K.