HUANG Xiao-fei,CHEN Zi-de,TAO Cheng,et al.Inhibitory Effect of Magnolol Analogue CT2-3 on Colon Cancer Cells and Its Mechanism[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(23):113-119.
HUANG Xiao-fei,CHEN Zi-de,TAO Cheng,et al.Inhibitory Effect of Magnolol Analogue CT2-3 on Colon Cancer Cells and Its Mechanism[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(23):113-119. DOI: 10.13422/j.cnki.syfjx.20202122.
Inhibitory Effect of Magnolol Analogue CT2-3 on Colon Cancer Cells and Its Mechanism
To study the anti-colon cancer effect and mechanism of magnolol analogue CT2-3, in order to lay a foundation for the application of CT2-3 in anti-colon cancer area.
Method
2
Colon cancer cells SW480 and LoVo were cultured
in vitro
. Different concentrations (10, 20, 40, 80 μmol·L
-1
) of CT2-3 and magnolol were used to stimulate colon cancer cells for 24, 48 h. The effect of CT2-3 and magnolol on the cell viability of colon cancer cells was detected by cell counting kit (CCK-8). Colony formation assay was used to detect the colony formation capacity of CT2-3 on colon cancer cells. Flow cytometry and Western blot were used to determine the effect of CT2-3 on the apoptosis of colon cancer cells and the expression of DNA damage marker phosphorylated histone H2AX (
γ
H2AX). Reactive oxygen species (ROS) generation was measured by ROS assay kit. Real time quantitative polymerase chain reaction (Real-time PCR) was used to detect the effect of CT2-3 on expressions of mitochondrial apoptosis-related genes B-cell lymphoma-2 (Bcl-2) and Bcl-2-associated X (Bax) in colon cancer cells.
Result
2
The half maximal inhibitory concentration (IC
50
) of magnolol in two kinds of colon cancer cells after treatment for 24, 48 h were both higher than 80 μmol·L
-1
. While the IC
50
of CT2-3 in SW480 cells after treatment for 24, 48 h were (54.59±1.73) μmol·L
-1
and (29.82±1.13) μmol·L
-1
, respectively. The IC
50
of CT2-3 in LoVo cells after treatment for 24,48 h were (66.68±2.11) μmol·L
-1
and (46.70±1.81) μmol·L
-1
, respectively. Compared with the blank group, the colony formation capacity of colon cancer cells in CT2-3 groups (20, 40 μmol·L
-1
) was significantly decreased in a dose-dependent manner (
P
<
0.01), apoptotic colon cancer cells were significantly increased (
P
<
0.01), relative expression of DNA damage marker
γ
H2AX was significantly increased (
P
<
0.01), ROS was significantly increased (
P
<
0.01). In addition, relative mRNA expression of Bcl-2 was significantly decreased (
P
<
0.01), while relative mRNA expression of Bax was significantly increased (
P
<
0.01).
Conclusion
2
CT2-3 can remarkably inhibit colon cancer cells, and the underlying mechanism might be that CT2-3 promotes mitochondria dysfunction and ROS generation by regulating expressions of mitochondrial apoptosis-related genes, so as to further induce DNA damage and finally lead to apoptosis.
关键词
Keywords
references
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