IL-12 reverses inhibitory effect of cisplatin on immune function of human NK cells and its mechanism / 中国肿瘤生物治疗杂志
Chinese Journal of Cancer Biotherapy
;
(6): 872-877, 2018.
Article
in Chinese
| WPRIM
| ID: wpr-812024
ABSTRACT
@# Objective:
To investigate the reverse effect and mechanism of IL-12 on chemotherapeutic medicine suppressing the immune function of NK cells.Methods:
Purified NK cells were stimulated with PMAplus Ionomycin in the presence or absent of Cisplatin (DDP) and IL-12. The levels of IFN-γ and TNF-α in culture supernatants were detected by enzyme-linked immunosorbent assay (ELISA); The content of IFN-γ and TNF-α, TRAIL (TNF-related apoptosis inducing ligand) and transcription factors including T-bet and p-STAT-4 in NK cells were analyzed by Flow cytometry. The cytotoxicity of purified NK cells (pretreated with/without chemotherapeutics and IL-12 for 48 h) to Jurkat cells was measured by Flow cytometry.Results:
Chemotherapeutics significantly inhibited the production of IFN-γ, TNF-α and the expression of TRAILin NK cells, which were significantly reversed by IL-12 (P<0.05 or P<0.01). Further study revealed that chemotherapeutics down-regulated while IL-12 reversed the expression of p-STAT4 to restore cytokine production. In addition, DDP also inhibited but IL-12 recovered the cytotoxicity of NK cells against tumor cells by inducing the expression of TRAIL (P<0.05 or P<0.01).Conclusion:
Chemotherapeutics inhibited the cytotoxicity of NK cells and its secretion of cytokines (IFNγ and TNF-α), which were reversed by IL-12 via up-regulating TRAIL and p-STAT-4; this might provide experimental evidence for the clinical application of IL-12 for rebuild the immune function of tumor patients receiving chemotherapy.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Journal of Cancer Biotherapy
Year:
2018
Type:
Article
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