JIANG Yifang,HUANG Ya,XIAO Chong,et al.Inhibitory Effect and Mechanism of Sishenwan-containing Serum on Aerobic Glycolysis in Human Colon Cancer Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(19):26-33.
JIANG Yifang,HUANG Ya,XIAO Chong,et al.Inhibitory Effect and Mechanism of Sishenwan-containing Serum on Aerobic Glycolysis in Human Colon Cancer Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(19):26-33. DOI: 10.13422/j.cnki.syfjx.20230130.
Inhibitory Effect and Mechanism of Sishenwan-containing Serum on Aerobic Glycolysis in Human Colon Cancer Cells
To explore the effect and mechanism of Sishenwan-containing serum on aerobic glycolysis in human colon cancer HCT116 cells.
Method
2
Cell counting kit-8 (CCK-8) was used to detect the cell viability of colon cancer HCT116 cells after treatment with Sishenwan-containing serum (2.5%, 5%, and 10%) for 24, 48, 72 h. The concentration of lactic acid, the content of intracellular glucose, and the activity of hexokinase (HK) and fructose-6-phosphate kinase (PFK) in the cell culture medium were detected by the micro-method. The content of glucose transporter 1 (GluT1) mRNA was detected by Real-time quantitative polymerase chain reaction (Real-time PCR). The protein expression of GluT1 and methyltransferase-like 3 (MettL3) was detected by Western blot. The expression of GluT1 in cells was detected by immunofluorescence and the level of N6-methyladenosine (m
6
A) RNA methylation was detected by colorimetry.
Result
2
Compared with the normal serum, 2.5%, 5%, and 10% Sishenwan-containing serum had no significant effect on the viability of HCT116 cells at 24 h, while 10% Sishenwan-containing serum showed a significant inhibitory effect on the viability of HCT116 cells at 48 h (
P
<
0.05). Hence, 10% Sishenwan-containing serum was used in subsequent experiments, and the intervention time was 48 h. Compared with the normal serum, 10% Sishenwan-containing serum could reduce lactate production (
P
<
0.05), down-regulate glucose uptake (
P
<
0.05), and blunt the activities of HK and PFK, the key rate-limiting enzymes of glycolysis (
P
<
0.05). Meanwhile, 10% Sishenwan-containing serum could decrease the expression of GluT1 protein (
P
<
0.01) and mRNA (
P
<
0.05) and reduce the proportion of cells expressing GluT1 (
P
<
0.01). Compared with the normal serum, Sishenwan-containing serum also decreased the protein content of MettL3 (
P
<
0.05) and the methylation level of m
6
A RNA (
P
<
0.01).
Conclusion
2
Sishenwan can inhibit glycolysis in colon cancer cells, and its inhibitory mechanism may be related to reducing MettL3 overexpression, inhibiting m
6
A RNA methylation, and down-regulating GluT1 and the activities of intracellular aerobic glycolysis-related enzymes such as HK and PFK.
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