Effects of curcumin on biological characteristics and expressions of NF-κB pathway-related proteins in glucocorticoid-resistant acute lymphoblastic leukemia cell line Jurkat
10.3760/cma.j.cn115356-20230807-00013
- VernacularTitle:姜黄素对糖皮质激素耐药的急性淋巴细胞白血病Jurkat细胞株生物学特性及NF-κB通路相关蛋白表达的影响
- Author:
Shengnan ZHOU
1
;
Shishan XIAO
;
Qian DING
;
Yaqin JIANG
;
Hongqian ZHU
Author Information
1. 贵州省人民医院血液内科，贵阳 550002
- Keywords:
Curcumin;
NF-KappaB;
Leukemia, lymphocytic, acute;
Glucocorticoids;
Drug tolerance
- From:
Journal of Leukemia & Lymphoma
2024;33(5):270-276
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the effects of curcumin on the biological characteristics and expressions of NF-κB pathway-related proteins in glucocorticoid-resistant acute lymphoblastic leukemia (ALL) cell line Jurkat.Methods:The drug-resistant ALL cell line Jurkat was selected, and 1 μmol/L dexamethasone was used as the optimal concentration for drug resistance of Jurkat cells, and the cells were passaged and cultured. The cells were divided into 10, 25 and 50 μmol/L curcumin groups, as well as 50 μmol/L pyrrolidinedithiocarbamate (PDTC) group, and control group (equal volume of culture medium without drug was added). The cells in each group were cultured for 72 h, and the cell morphology was observed under an inverted microscope. The CCK-8 method was used to detect the proliferation ability of Jurkat cells, flow cytometry was used to detect the apoptosis ability and cell cycle of Jurkat cells, real-time fluorescence quantitative polymerase chain reaction (qRT-PCR) was used to detect the relative expressions of NF-κB p65, NF-κB p50, IκBα, and A20 mRNA, and Western blotting was used to detect the expressions of NF-κB p65, NF-κB p50, IκBα, caspase-8, caspase-3, bcl-2, and A20 proteins.Results:Jurkat cells were treated with 10, 25, 50 μmol/L curcumin and 50 μmol/L PDTC for 72 h. In the control group, the cell membranes were basically intact, the size was uniform, the cell was round and transparent, and the cell nucleus had uniform fluorescence; a large number of deformed cells and cell fragments were observed in curcumin groups with different concentrations and 50 μmol/L PDTC group, with concentrated and fragmented nuclei and obvious apoptosis. After treating Jurkat cells with different concentrations of curcumin and 50 μmol/L PDTC for 24, 48 and 72 h, respectively, the cell proliferation inhibition rates in curcumin groups with different concentrations and PDTC group were higher than those in the control group (all P < 0.01). The apoptosis rates at 72 h in the control group, 10 μmol/L curcumin group, 25 μmol/L curcumin group, 50 μmol/L curcumin group, and 50 μmol/L PDTC group were (4.9±0.1)%, (99.2±0.1)%, (99.9±0)%, (100.0±0)%, and (100.0±0)%, respectively, and the difference was statistically significant ( F = 2 876 604.40, P < 0.001); compared with the control group, the apoptosis rates in curcumin groups with different concentrations and 50 μmol/L PDTC group were higher, and the differences were statistically significant (all P < 0.01). Compared with the control group, the proportions of S-phase and G 2-phase cells were lower and the proportion of G 1-phase cells was higher in curcumin groups with different concentrations and 50 μmol/L PDTC group at 72 h, and the differences were statistically significant (all P < 0.01). Compared with the control group, the protein and mRNA expressions of NF-κB p65 and NF-κB p50 in curcumin groups with different concentrations and 50 μmol/L PDTC group were lower (all P < 0.01), while the protein expressions of IκBα, caspase-8 and caspase-3 were higher (all P < 0.01), the protein expression of bcl-2 was lower ( P < 0.01), and the protein and mRNA expressions of A20 were higher (both P < 0.01). Conclusions:Curcumin can effectively reverse glucocorticoid resistance and promote apoptosis in Jurkat cells, which may be related to the influence of curcumin on NF-κB pathway-related proteins.
