ZHANG Kai-yuan,LYU Ling-ling,CHEN Jing-xian,et al.Effect of Curdione on MDA-MB-231 Cell Cycle and Apoptosis[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(12):74-81.
ZHANG Kai-yuan,LYU Ling-ling,CHEN Jing-xian,et al.Effect of Curdione on MDA-MB-231 Cell Cycle and Apoptosis[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(12):74-81. DOI: 10.13422/j.cnki.syfjx.20211298.
Effect of Curdione on MDA-MB-231 Cell Cycle and Apoptosis
To investigate the effects of curdione on the proliferation, apoptosis and cell cycle of triple negative breast cancer cell line MDA-MB-231.
Method
2
MDA-MB-231 cells were cultured
in vitro
with capecitabine (positive control) and curdione at different concentrations (125, 250, 500, 1 000, and 2 000 μmol·L
-1
), respectively, for detecting their viability using the cell counting kit-8 (CCK-8) at 24 and 48 h. Three effective inhibitory concentrations (250, 500, and 1 000 μmol·L
-1
) against cell proliferation were selected for subsequent experiments. The effect of curdione on cell cycle was determined by flow cytometry combined with propidium iodide (PI) staining. After the set-up of high-concentration (2 000 μmol·L
-1
) group, the effect of curdione on cell mitochondrial membrane potential was measured by JC-1(5,5,6,6-tetrachloro-1,1,3,3-tetraethylbenzimidazolylcarbocyanine iodide) staining, followed by the detection of cell apoptosis by flow cytometry combined with Annexin V-FITC/PI double staining. The changes in cell cycle status and apoptosis-related protein expression following curdione intervention were assayed by Western blot.
Result
2
Compared with the blank control, curdione at 250, 500, 1 000, and 2 000 μmol·L
-1
significantly inhibited the proliferation of MDA-MB-231 cells (
P
<
0.01), exhibiting a concentration- and time-response relationship. The half maximal inhibitory concentration (IC
50
) values at 24 and 48 h were 1 607 and 1 401 μmol·L
-1
, respectively. Curdione at 250, 500, and 1 000 μmol·L
-1
arrested cells in G
1
phase. Curdione at 250 μmol·L
-1
had no effect on cell mitochondrial membrane potential, which, however, declined significantly in the 500, 1 000, and 2 000 μmol·L
-1
groups (
P
<
0.05,
P
<
0.01). Curdione at 250, 500, and 1 000 μmol·L
-1
obviously increased the proportion of apoptotic cells (
P
<
0.05,
P
<
0.01). Curdione at each concentration elevated the Bcl-2-associated X protein (Bax)/B-cell lymphoma 2 (Bcl-2) ratio (
P
<
0.05,
P
<
0.01), but did not change the cysteinyl aspartate-specific protease-3 (Caspase-3) expression. The protein expression levels of Caspase-9, cleaved Caspase-9, cleaved Caspase-3, p53, and p21 were up-regulated (
P
<
0.05).
Conclusion
2
A certain concentration of curdione inhibits the proliferation of MDA-MB-231 cells, which may be related to its efficacy in arresting cell cycle and inducing apoptosis.
关键词
Keywords
references
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