線粒體丙酮酸載體與肝細胞肝癌患者預后的相關(guān)性研究
[Abstract]:Background and objective hepatocellular carcinoma is the most common, highest mortality and most malignant digestive system malignant tumor in the world. Hepatectomy is the most commonly used and most important treatment in clinic. In recent years, with the experience of surgery, professional knowledge and the continuous improvement of operation techniques, hepatectomy for hepatocarcinoma patients The overall survival rate of the patients was improved, but the postoperative tumor free survival was not significantly changed. The recurrence rate was up to 70%. to understand the molecular mechanism of postoperative recurrence of hepatocellular carcinoma. To find out the prognosis and recurrence of tumor markers that could predict the prognosis and recurrence of tumor patients will open up a new way of treatment for recurrent hepatocellular carcinoma. Mitochondrion is one of the most important mediators in the development of tumor. It participates in or dominates a variety of tumor cell characteristics, including cell energy metabolism abnormality, resistance to cell death, tissue infiltration and metastasis, inflammation of the tumor, genomic instability and escape from epidemic killing. Liver cells contain more than other cells. Mitochondria. Therefore, mitochondrial metabolic dysfunction plays a very important role in the development of hepatocellular carcinoma. The pyruvate transporter, located on the mitochondrial membrane, is composed of MPC1 and MPC2, located at the intersection of glycolysis and mitochondrial pyruvate metabolism. Most of the tumor cells show enhanced glycolysis and reduction. Therefore, MPC should play an important role in the metabolic changes of tumor cells and its important pathophysiological role. However, there are few studies on the effect of MPC on the development of malignant tumor and its mechanism, especially in the study of hepatocellular carcinoma. This study is based on the detection of liver cells. The expression level of MPC protein and m RNA in cancer tissues, the correlation between the expression level of MPC in the hepatocellular carcinoma tissue and the clinicopathological indexes and the guiding value for the recurrence and prognosis. To clarify the significance of MPC to the prognosis of the patients with hepatocellular carcinoma. I hope this study can be used as the treatment and prognosis of the liver cell carcinoma and the development of the drug. A new idea, viewpoint and basis. Method 1) the expression of MPC1 and MPC2 protein in the paraffin tissues of 85 surgically excised hepatocellular carcinoma specimens was detected by immunohistochemistry. The Image-Pro Plus software was used to perform light density scanning and to calculate the relative protein expression of MPC1 and MPC2, and the analysis of MPC1 and MPC2. The change of protein expression level.2) Western Blotting detection of MPC1 and MPC2 protein expression levels in the fresh specimens of hepatocarcinoma in 20 surgically resected hepatocellular carcinoma specimens.3) by RT-PCR detection of the RNA expression level of MPC1 and MPC2 m in the fresh specimens of hepatocarcinoma in 20 cases of surgical resection of hepatocellular carcinoma The median of the relative protein expression of C1 and MPC2 was grouped in 85 patients with hepatocellular carcinoma. The correlation between the expression level of MPC1 and MPC2 protein and the correlation of the clinicopathological indexes was analyzed. According to the follow-up results and the expression of MPC1 and MPC2 protein, the expression of MPC protein and the recurrence and prognosis of the patients with hepatocellular carcinoma were analyzed by Kaplain-Meier survival analysis. Correlation.6) based on the follow-up results, the COX regression analysis model was established to analyze the MPC1 and MPC2 protein expression level and the clinicopathological index by single factor and multifactor analysis to find independent risk factors for the recurrence of hepatocellular carcinoma. Results 1) in the surgical excised hepatocellular carcinoma paraffin specimens, MPC1 and MPC1 were compared with the para cancerous tissue. The expression level of MPC2 protein was significantly reduced by.2). The expression level of MPC1 and MPC2 protein in the cancerous tissue was significantly lower in the fresh specimens of the surgically resected hepatocellular carcinoma than that of the para cancerous tissue. In the fresh specimens of the hepatocarcinoma, the expression level of MPC1 m RNA in the cancerous tissues decreased, and MPC2 m RNA expressed the water. In some specimens, the expression level of MPC2 is reduced in some specimens, and the other is the disordered state of the MPC2 gene expression level in the para cancerous tissue.4). There is no significant correlation between the protein expression level and the clinicopathological index of the MPC1 and MPC2 (P0.05).5) the postoperative recovery of the hepatocellular carcinoma with low level of MPC1 protein expression. Higher hair rate and shorter overall survival time; MPC2 protein expression level and recurrence and total survival time without.6) MPC1 protein expression level and microvascular invasion are independent risk factors for postoperative recurrence of hepatocellular carcinoma; single factor and multiple factor analysis show that MPC2 and patients have no recurrence after operation. Conclusion MPC1 in hepatocellular carcinoma (MPC1) The decrease or loss of protein activity of MPC2 is common, and there is a significant correlation between the protein expression level of MPC1 and the postoperative recurrence and prognosis of the patients. It can be a new clinical prognosis for patients with hepatocellular carcinoma and the risk stratification of the patients after the operation. The results reveal that MPC may be in the sugar isogenesis of hepatocellular carcinoma. It plays an important role in reducing metabolic abnormalities and enhancing glycolysis, and is expected to become a new target for drug therapy of hepatocellular carcinoma.
【學位授予單位】:天津醫(yī)科大學
【學位級別】:博士
【學位授予年份】:2017
【分類號】:R735.7
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