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1.湖北省中医院,武汉 430061
2.湖北中医药大学,武汉 430061
陈俊,博士,副教授,副主任医师,硕士生导师,从事中医药防治内分泌代谢性疾病的研究,E-mail:chenjun1@hbhtcm.com
收稿日期:2021-08-27,
网络出版日期:2021-11-23,
纸质出版日期:2022-02-05
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陈俊,钱紫星,朱梦杨等.基于GPR119/cAMP/GLP-1通路探讨葛根芩连汤的降糖机制[J].中国实验方剂学杂志,2022,28(03):25-30.
CHEN Jun,QIAN Zi-xing,ZHU Meng-yang,et al.Hypoglycemic Mechanism of Gegen Qinliantang: An Exploration Based on GPR119/cAMP/GLP-1 Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(03):25-30.
陈俊,钱紫星,朱梦杨等.基于GPR119/cAMP/GLP-1通路探讨葛根芩连汤的降糖机制[J].中国实验方剂学杂志,2022,28(03):25-30. DOI: 10.13422/j.cnki.syfjx.20220207.
CHEN Jun,QIAN Zi-xing,ZHU Meng-yang,et al.Hypoglycemic Mechanism of Gegen Qinliantang: An Exploration Based on GPR119/cAMP/GLP-1 Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(03):25-30. DOI: 10.13422/j.cnki.syfjx.20220207.
目的
2
探讨葛根芩连汤(GGQL)对肠道上皮细胞增殖和凋亡的影响,并通过其对细胞环磷酸腺苷(cAMP),G蛋白偶联受体119(GPR119)表达的影响探讨其对胰高血糖素样肽-1(GLP-1)的影响和潜在降糖机制。
方法
2
对25只Wistar大鼠按生药23 g·kg
-1
,每天2次予以葛根芩连汤灌胃,每只大鼠每天灌胃6 mL,以制备含葛根芩连汤的血清,连续给药7次。用不同浓度葛根芩连汤含药血清(1%,2.5%,5%,7.5%,10%)培养肠道上皮L细胞系NCI-H716细胞;细胞增殖与活性检测(CCK-8)评估细胞增殖水平;流式细胞术检测细胞凋亡水平;酶联免疫吸附测定法(ELISA)检测细胞上清液中GLP-1,cAMP含量;实时荧光定量聚合酶链式反应(Real-time PCR)检测GLP-1,GPR119 mRNA水平;蛋白免疫印迹法(Western blot)检测GLP-1,GPR119蛋白表达水平。
结果
2
与空白组比较,葛根芩连汤明显减少了NCI-H716细胞的增殖(
P
<
0.05),且随着葛根芩连汤浓度的增加,其抑制作用更加明显;每种浓度的葛根芩连汤均明显促进NCI-H716细胞凋亡(
P
<
0.05),并且与空白组比较,葛根芩连汤明显提高cAMP,GLP-1,GPR119的表达(
P
<
0.05)。葛根芩连汤的作用与其浓度呈正相关,其中10%葛根芩连汤表现出最好的作用。
结论
2
葛根芩连汤可有效抑制NCI-H716的增殖并促进其凋亡,其可能通过上调cAMP,GPR119的表达而促进GLP-1的分泌。
Objective
2
To explore the effects of Gegen Qinliantang(GGQL) on the proliferation and apoptosis of intestinal epithelial cells as well as on the expression of cyclic adenosine monophosphate (cAMP), G protein-coupled receptor 119 (GPR119), and glucagon-like peptide-1 (GLP-1), so as to explore its potential hypoglycemic mechanism.
Method
2
Twenty-five Wistar rats were gavaged with GGQL at the dose of 23 g·kg
-1
crude drug, twice a day, which meant that 6 mL was administered into each rat per day for preparing the GGQL-containing serum. After seven consecutive times of administration, the intestinal epithelial L (NCI-H716) cells were cultured with different concentrations (1%, 2.5%, 5%, 7.5%, and 10%) of GGQL. The cell proliferation was evaluated using cell counting kit-8 (CCK-8) and the apoptosis by flow cytometry. The GLP-1 and cAMP contents in cell supernatant were determined by enzyme-linked immunosorbent assay (ELISA). The mRNA and protein GLP-1 and GPR119 levels were assayed by real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) and Western blot, respectively.
Result
2
Compared with the control group, GGQL significantly reduced the proliferation of NCI-H716 cells(
P
<
0.05). As the GGQL concentration increased, its inhibitory effect became more obvious. GGQL at each concentration significantly promoted the apoptosis of NCI-H716 cells (
P
<
0.05). Compared with the control group, GGQL significantly up-regulated the expression of cAMP, GLP-1, and GPR119 (
P
<
0.05). The results showed that the effect of GGQL was positively correlated with its concentration, and 10% GGQL exhibited the best effect.
Conclusion
2
GGQL effectively inhibits the proliferation of NCI-H716 cells and promotes their apoptosis, and it may promote the secretion of GLP-1 by up-regulating the expression of cAMP and GPR119.
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