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1.成都中医药大学 附属医院 代谢性疾病中医药调控四川省重点实验室,成都 610075
2.成都中医药大学 肿瘤研究所,成都 610072
Received:26 July 2022,
Published Online:26 November 2022,
Published:05 October 2023
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蒋义芳,黄娅,肖冲等.四神丸含药血清抑制人结肠癌细胞有氧糖酵解的效应及机制[J].中国实验方剂学杂志,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.
蒋义芳,黄娅,肖冲等.四神丸含药血清抑制人结肠癌细胞有氧糖酵解的效应及机制[J].中国实验方剂学杂志,2023,29(19):26-33. DOI: 10.13422/j.cnki.syfjx.20230130.
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.
目的
2
探究四神丸含药血清对人结肠癌细胞HCT116有氧糖酵解的影响和作用机制。
方法
2
采用细胞增殖与活性检测(CCK-8)法检测四神丸含药血清(2.5%、5%、10%)处理结肠癌HCT116细胞24、48、72 h的细胞活力;微量法检测细胞培养液中乳酸浓度和细胞内葡萄糖含量,以及己糖激酶(HK)和果糖-6-磷酸激酶(PFK)活性;实时荧光定量聚合酶链式反应(Real-time PCR)检测葡萄糖转运酶1(GluT1)mRNA含量;蛋白免疫印迹法(Western blot)检测GluT1、甲基转移酶样3(MettL3)蛋白表达;免疫荧光染色法检测细胞GluT1表达;比色法检测N6-甲基腺苷(m
6
A)RNA甲基化水平。
结果
2
与空白组比较,2.5%、5%、10%四神丸含药血清24 h对HCT116细胞活力均无明显影响,10%四神丸含药血清在48 h可明显抑制HCT116细胞活力(
P
<
0.05),故后续实验选用10%四神丸含药血清,给药时间为48 h。与空白组比较,10%四神丸含药血清能够降低乳酸生成(
P
<
0.05),并下调细胞对葡萄糖摄取(
P
<
0.05),并降低糖酵解关键限速酶HK和PFK的活性(
P
<
0.05),同时四神丸含药血清还可降低GluT1蛋白(
P
<
0.01)及其mRNA表达(
P
<
0.05),并减少表达GluT1的细胞比例(
P
<
0.01)。与空白组比较,四神丸含药血清还能降低MettL3蛋白含量(
P
<
0.05)及m
6
A RNA 甲基化水平(
P
<
0.01)。
结论
2
四神丸能够抑制结肠癌细胞糖酵解,其作用机制可能与降低MettL3过表达,抑制m
6
A RNA甲基化,下调GluT1及细胞内HK、PFK等有氧糖酵解相关酶的活性有关。
Objective
2
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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