WANG Hong-xing,WU Jian,YUAN Meng-yun,et al.Effect of Jianpi Yangzheng Recipe on Apoptosis and EMT of HCT116 Cells in Colorectal Cancer by Inhibiting Aerobic Glycolysis Regulated by PKM2[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(16):93-100.
WANG Hong-xing,WU Jian,YUAN Meng-yun,et al.Effect of Jianpi Yangzheng Recipe on Apoptosis and EMT of HCT116 Cells in Colorectal Cancer by Inhibiting Aerobic Glycolysis Regulated by PKM2[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(16):93-100. DOI: 10.13422/j.cnki.syfjx.20201622.
Effect of Jianpi Yangzheng Recipe on Apoptosis and EMT of HCT116 Cells in Colorectal Cancer by Inhibiting Aerobic Glycolysis Regulated by PKM2
To investigate the mechanism of Jianpi Yangzheng recipe in inhibiting aerobic glycolysis by down-regulating the expression of pyruvate kinase isoenzyme M2 (PKM2) protein
in order to promote apoptosis and inhibite epithelial-mesenchymal transition(EMT)in HCT116 cells of colorectal cancer.
Method
2
The effect of different concentrations of Jianpi Yangzheng recipe on HCT116 cell proliferation was detected by methylthiazolyldiphenyl-tetrazolium bromide(MTT)colorimetry. Flow cytometry was used to detect the effect of different concentrations of Jianpi Yangzheng recipe(2.0
4.0
8.0 g·L
-1
) on HCT116 cell apoptosis. The effect of Jianpi Yangzheng recipe(2.0
4.0
8.0 g·L
-1
) on the migration and invasion ability of HCT116 cells was observed by cell scratch and cell invasion assay (Transwell). The effect of different concentrations of Jianpi Yangzheng recipe(2.0
4.0
8.0 g·L
-1
) on glycolysis metabolism of HCT116 cells were detected by lactic acid (LD) test kit and glucose assay kit
respectively. Western blot was used to detect the expressions of apoptosis-related proteins
like B lymphocyte tumor-2 gene (Bcl-2)
Bcl-2 related X protein (Bax) and EMT-related proteins
like epithelial cadherin (E-cadherin),neurogenic cadherin(N-cadherin)
Vimentin
and PKM2
the key protein of glycolysis
in each group.
Result
2
MTT assay showed that
compared with the blank group
HCT116 cells were treated with Jianpi Yangzheng recipe for 48 h. With the increase of drug concentration
the inhibitory effect of Jianpi Yangzheng recipe on the proliferation of HCT116 cells was also increased; and when the concentration was 4.0 g·L
-1
the inhibition rate of HCT116 cells was about 53.87%. Therefore
2.0,4.0,8.0 g·L
-1
were selected as low
medium and high-dose groups for the study. The cell flow cytometry results indicated that
compared with the blank group
the low
medium and high-dose groups all significantly induced the apoptosis of HCT116 cells (
P
<
0.05)
and the effect in inducing apoptosis was more obvious with the increase of drug concentration (
P
<
0.05). Cell scratch and Transwell showed that
compared with the blank group
all the groups had an inhibitory effect on migration and invasion of HCT116 cells (
P
<
0.05)
and the effect was more significant with the increase of drug concentration (
P
<
0.05). The determination of lactic acid and glucose indicated that compared with the blank group
with the increase of drug concentration
the amount of lactic acid produced by cells in each group gradually decreased (
P
<
0.05)
while the glucose dosage also gradually decreased (
P
<
0.05). Western blot showed that
compared with the blank group
the protein expressions of E-cadherin and Bax were up-regulated in groups with different concentrations
whereas the protein expressions of N-cadherin
Vimentin
Bcl-2 and PKM2 were down-regulated (
P
<
0.05).
Conclusion
2
Jianpi Yangzheng recipe can effectively induce the apoptosis of HCT116 cells and inhibit EMT in colorectal cancer. The possible mechanism may be related to the inhibition of aerobic glycolysis pathway of HCT116 cells by down-regulating PKM2 protein expression.
关键词
Keywords
references
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