当前位置： SCI文献检索 > CANCER LETTERS期刊下所有文献 > Nimesulide inhibits IFN-gamma-induced programmed death-1-ligand 1 surface expression in breast cancer cells by COX-2 and PGE2 independent mechanisms.

Nimesulide inhibits IFN-gamma-induced programmed death-1-ligand 1 surface expression in breast cancer cells by COX-2 and PGE2 independent mechanisms.

Abstract：

:It is now well established that increased programmed death-1-ligand 1 (PD-L1) surface expression in cancer cells and the resultant T cell suppression contribute to cancer cell immune evasion. Blockade of PD-L1 function has been shown to stimulate anti-cancer immunity. Therefore, compounds that can down-regulate PD-L1 surface expression in cancer cells may serve as novel immune modulators to promote cancer cell-reactive immune responses. In the present study, we examined the effects of nimesulide, a selective COX-2 inhibitor, on PD-L1 surface expression in breast cancer cells by flow cytometry. We demonstrated that nimesulide was able to inhibit IFN-gamma-induced PD-L1 surface expression in breast cancer cells. However, our data indicate that the inhibitory effects of nimesulide appear to be independent of COX-2/PGE2 signaling. Since nimesulide also exhibits anti-tumor activities by inducing cancer cell apoptosis and inhibiting cancer cell proliferation, our findings suggest that nimesulide may represent a new class of chemotherapeutic agents that possess dual functions to inhibit cancer cell growth and promote cancer cell immune responses.

journal_name

Cancer Lett

journal_title

Cancer letters

authors

Liang M,Yang H,Fu J

doi

10.1016/j.canlet.2008.10.028

subject

Has Abstract

pub_date

2009-04-08 00:00:00

pages

47-52

issue

1

eissn

0304-3835

issn

1872-7980

pii

S0304-3835(08)00854-9

journal_volume

276

pub_type

杂志文章

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