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EGCG suppresses PD-1 expression of T cells via inhibiting NF-κB phosphorylation and nuclear translocation.
- Source :
-
International Immunopharmacology . May2024, Vol. 133, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- • EGCG inhibits NF-κB phosphorylation and nuclear translocation to attenuate PD-1 expression level on T cells. • EGCG improves the cytotoxic effect of T cells on B16F10 melanoma via suppressing PD-1 expression. • EGCG inhibits B16F10 melanoma growth by inhibiting PD-1 of CD8+ T cells. Epigallocatechin-3-gallate (EGCG) is an important tea polyphenol with anti-tumor potential. Our previous studies revealed that EGCG was a promising immune checkpoint inhibitor (ICI) as it could downregulate expression of programmed cell death 1 ligand 1 (PD-L1) in tumor cells, thereby resulting tumor killing effect. In particular, EGCG can effectively avoid the inflammatory storm caused by anti-tumor therapy, which is a healthy green capacity absent from many ICIs. However, the relationship between EGCG and programmed cell death 1 (PD-1) of T cells remains unclear. In this work, we explored the effect of EGCG on T cells and found that EGCG suppressed PD-1 via inhibiting NF-κB phosphorylation and nuclear translocation. Furtherly, the capability of EGCG was confirmed in tumor-bearing mice to inhibit PD-1 expression in T cells and enhance apoptosis in tumor cells. These results implied that EGCG could inhibit the expression of PD-1 in T cells, thereby promoting anti-tumor effects of T cells. EGCG will be a promising candidate in anti-tumor therapy. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15675769
- Volume :
- 133
- Database :
- Academic Search Index
- Journal :
- International Immunopharmacology
- Publication Type :
- Academic Journal
- Accession number :
- 177086530
- Full Text :
- https://doi.org/10.1016/j.intimp.2024.112069