苦參堿通過ERK信號通路對HepG2肝癌細(xì)胞增殖及遷移的影響
[Abstract]:Objective: to observe the inhibitory effect and mechanism of Matrine on HCC cells. Methods: HepG2 HCC cell line was selected and MTT was selected to screen the concentration gradient of Matrine on HepG2 HCC cells, and the effect of Matrine on the morphology of HepG2 HCC cells was observed. The experiment was divided into three groups: blank control group, experimental group and positive control group. The blank control group was supplemented with non-drug cell culture medium, and the experimental group was added with Matrine to make the final concentration of Matrine 1, 2, 4 mg/mL,. The positive control group was cultured with ERK signal pathway blocker PD98059, with final concentration of 20umol/L for 24 hours. The proliferation of cells was detected by MTT and the number of cell migration was detected by Transwell chamber. Reverse transcription polymerase chain reaction (RT-PCR) was used to detect the nucleic acid expression of the key protein ERK in ERK signaling pathway, and Western-Blot was used to detect the expression of ERK,p-ERK protein. Result: 1. Morphological changes of cells in the blank control group: the cells in the blank control group were closely arranged, fusiform, full in shape and good adherent to the wall. The cell morphology of the experimental group decreased gradually with the increase of concentration, the adherent cell density was not firm, and the cell fragments appeared at high concentration. 2. The results showed that the inhibitory effect of Matrine on the proliferation of HepG2 cells was time-and concentration-dependent. At the concentration of 1 mg/mL, 2 mg/mL,4 mg/mL in 24 h, Matrine was the most sensitive to HepG2. The changes of cell migration ability: compared with the blank control group, the cell migration ability of the experimental group was significantly lower than that of the blank control group (1 mg/m / L, 2 mg/m / L, 4 mg 路L) (P 0.01). There was no significant difference in the expression of ERK mRNA between the 4 mg/m / L group and the positive control group (P 0.05). 4. The expression of ERK nucleic acid: the expression of ERK decreased significantly after treatment with Matrine, and the expression of ERK in the experimental group was 4 mg/m / L. 2There was significant difference between mg/m / L and blank control group (P 0.05). Compared with the positive control group, the expression of nucleic acid in the experimental group was not decreased, but the expression of 4mg/m L and 2 mg / L was different (P 0.05). 5. The expression of ERK and p-ERK protein in the experimental group was higher than that in the blank control group. The expression of p-ERK protein decreased significantly at the concentration of 2 mg/mL and 4 mg/mL, which was statistically significant (P 0.01). The expression of), ERK protein decreased significantly at the concentration of 2 mg/mL and 4 mg/mL (P 0.05). Compared with the positive control group, the down regulation of p-ERK protein in 1 mg/mL and 2 mg/mL Matrine was lower than that in PD98059 (P 0.05), and there was significant difference in 1 mg/mL (P 0.01). Conclusion: 1. Matrine can inhibit the proliferation and migration of HepG2 hepatocellular carcinoma cells, and its mechanism may be by down-regulating the expression of p-ERK and ERK proteins in ERK signal transduction pathway. 2. The inhibitory effect of Matrine on HepG2 HCC cells was time-and concentration-dependent.
【學(xué)位授予單位】:甘肅中醫(yī)藥大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:R735.7
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