The choriocarcinoma cell line JEG-3 upregulates regulatory T cell phenotypes and modulates pro-inflammatory cytokines through HLA-G

TY - JOUR

T1 - The choriocarcinoma cell line JEG-3 upregulates regulatory T cell phenotypes and modulates pro-inflammatory cytokines through HLA-G

AU - Melsted, Wenna Nascimento

AU - Matzen, Sara Hyldig

AU - Andersen, Mads Hald

AU - Hviid, Thomas Vauvert F.

PY - 2018/2

Y1 - 2018/2

N2 - An understanding of the interactions between immune cells and trophoblast cells, as well as choriocarcinoma cells, are of extreme importance in reproductive immunology and cancer immunology. In this study, we found that the human HLA-G-positive choriocarcinoma cell line JEG-3 upregulates CD4+CD25hiCD127lo T cells, increases the expression of HLA-G+CD4+ and CD8+ T cells, and decreases the expression of ILT2+ on CD4+ T cells in resting PBMCs after six days of co-culture. Expression of HLA-G on JEG-3 cells did not affect regulatory T cell phenotypes, but promoted modulation of pro-inflammatory cytokines IFN-γ, TNF-α and IL-17A. When JEG-3 cells were stimulated with rhIFN-γ prior to co-culture, CD4+HLA-G+ T cells were significantly increased, and IFN-γ and TNF-α elevated. Taken together, the results indicate that JEG-3 cells upregulate regulatory T cell phenotypes and modulate the level of pro-inflammatory cytokines, which might be important mechanisms in the tumor microenvironment and at the feto-maternal interface during pregnancy.

AB - An understanding of the interactions between immune cells and trophoblast cells, as well as choriocarcinoma cells, are of extreme importance in reproductive immunology and cancer immunology. In this study, we found that the human HLA-G-positive choriocarcinoma cell line JEG-3 upregulates CD4+CD25hiCD127lo T cells, increases the expression of HLA-G+CD4+ and CD8+ T cells, and decreases the expression of ILT2+ on CD4+ T cells in resting PBMCs after six days of co-culture. Expression of HLA-G on JEG-3 cells did not affect regulatory T cell phenotypes, but promoted modulation of pro-inflammatory cytokines IFN-γ, TNF-α and IL-17A. When JEG-3 cells were stimulated with rhIFN-γ prior to co-culture, CD4+HLA-G+ T cells were significantly increased, and IFN-γ and TNF-α elevated. Taken together, the results indicate that JEG-3 cells upregulate regulatory T cell phenotypes and modulate the level of pro-inflammatory cytokines, which might be important mechanisms in the tumor microenvironment and at the feto-maternal interface during pregnancy.

KW - Choriocarcinoma

KW - HLA-G

KW - IFN-γ

KW - Placenta

KW - T cells

U2 - 10.1016/j.cellimm.2017.11.008

DO - 10.1016/j.cellimm.2017.11.008

M3 - Journal article

C2 - 29198970

AN - SCOPUS:85035760528

SN - 0008-8749

VL - 324

SP - 14

EP - 23

JO - Cellular Immunology

JF - Cellular Immunology

ER -