Regulatory T-Cells Suppress Cytotoxic T Lymphocyte Responses against Microglia.
Regulatory T-Cells Suppress Cytotoxic T Lymphocyte Responses against Microglia.
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调节性T细胞抑制针对小胶质细胞的细胞毒性T淋巴细胞反应。
DOI:
10.3390/cells11182826
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发表时间:
2022-09-09
期刊:
影响因子:
6
通讯作者:
Lokensgard, James R.
中科院分区:
文献类型:
--
作者:
Chauhan, Priyanka;Hu, Shuxian;Sheng, Wen S.;Lokensgard, James R.
Regulatory T-cells (Tregs) play pivotal roles during infection, cancer, and autoimmunity. In our previous study, we demonstrated a role for the PD-1:PD-L1 pathway in controlling cytolytic responses of CD8+ T lymphocytes against microglial cells presenting viral peptides. In this study, we investigated the role of Tregs in suppressing CD8+ T-cell-mediated cytotoxicity against primary microglial cells. Using in vitro cytotoxicity assays and flow cytometry, we demonstrated a role for Tregs in suppressing antigen-specific cytotoxic T-lymphocyte (CTL) responses against microglia loaded with a model peptide (SIINFEKL). We went on to show a significant decrease in the frequency of IFN-γ- and TNF-producing CD8+ T-cells when cultured with Tregs. Interestingly, a significant increase in the frequency of granzyme B- and Ki67-producing CTLs was observed. We also observed a significant decrease in the production of interleukin (IL)-6 by microglia. On further investigation, we found that Tregs significantly reduced MHC class 1 (MHC-1) expression on IFN-γ-treated microglial cells. Taken together, these studies demonstrate an immunosuppressive role for Tregs on CTL responses generated against primary microglia. Hence, modulation of Treg cell activity in combination with negative immune checkpoint blockade may stimulate anti-viral T-cell responses to more efficiently clear viral infection from microglial cell reservoirs.
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影响因子:
29.7
作者:
Nayak D;Roth TL;McGavern DB
通讯作者:
McGavern DB
DOI:
10.4049/jimmunol.1101649
发表时间:
2011-09-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Kastenmuller W;Gasteiger G;Subramanian N;Sparwasser T;Busch DH;Belkaid Y;Drexler I;Germain RN
通讯作者:
Germain RN
影响因子:
64.8
作者:
Gomez Perdiguero E;Klapproth K;Schulz C;Busch K;Azzoni E;Crozet L;Garner H;Trouillet C;de Bruijn MF;Geissmann F;Rodewald HR
通讯作者:
Rodewald HR
影响因子:
50.3
作者:
Saha D;Martuza RL;Rabkin SD
通讯作者:
Rabkin SD
影响因子:
3.7
作者:
Dong T;Moran E;Vinh Chau N;Simmons C;Luhn K;Peng Y;Wills B;Phuong Dung N;Thi Thu Thao L;Hien TT;McMichael A;Farrar J;Rowland-Jones S
通讯作者:
Rowland-Jones S