SREBF-1單核苷酸多態(tài)性與子宮內(nèi)膜樣腺癌高風(fēng)險(xiǎn)相關(guān)性分析
[Abstract]:Objective: endometrial carcinoma (endometrial carcinoma, EC) is one of the three most common malignant tumors in female reproductive organs. In developed countries, the incidence of endometrial cancer is the first in gynecological tumors, and the incidence of endometrial cancer is second only to cervical cancer in China. The incidence of the disease has been increasing in recent years. The biological behavior of malignant tumor is closely related to its special material and energy metabolism. It has been discovered more than 50 years ago that tumor tissue can synthesize lipids in a manner similar to embryonic tissue. The significant increase in fatty acid synthesis is an important marker for the rapid proliferation of tumor cells, and the tumor cells themselves synthesize more than 90% of the fatty acids from scratch, and are not affected by the regulation of fatty acid synthesis by normal cells. The sterol regulatory element binding protein (Sterol Regulatory Element Binding Protein, SREBP), encoded by the SREBF-1 gene, is the main regulator of the lipid-producing gene by binding to the sterol regulatory element of the promoter / enhancer of the lipase gene. Activation of its target gene transcription, regulation of cholesterol and lipid synthesis and metabolism. It has been proved that SREBP-1 is overexpressed in endometrial carcinoma and correlated with the degree of tumor differentiation. SREBP-1shRNA can significantly reduce the proliferation, invasion and colony-forming ability of endometrial cancer cells. Apoptosis of endometrial carcinoma cells and inhibition of tumor formation and growth in nude mice showed that endogenous SREBP-1 was involved in the genesis and development of endometrial carcinoma. Obesity and diabetes are recognized risk factors for endometrioid adenocarcinoma. Studies have shown that SREBF-1 gene polymorphism is closely associated with obesity and type 2 diabetes. Therefore, we speculate that SREBF-1 gene polymorphism may be associated with a high risk of endometrioid adenocarcinoma. Methods: high-throughput sequencing was used to detect and compare the SREBF-1 gene sequences in 30 cases of endometrioid adenocarcinoma and 6 cases of normal endometrium. Based on the results of the above study, a clinical case-control study was conducted on the SNP (rs2297508) site, which is highly related to the occurrence of endometrioid adenocarcinoma. The study included 122 patients with endometrial adenocarcinoma and 129 benign controls. The total DNA, was extracted by DNA extraction kit and the nucleotide of the site was detected by RT-PCR. Results: (1) there were 10 SNP sites in SREBF-1 gene which may be associated with endometrioid adenocarcinoma. Among the 10 loci, SNP (rs2297508) was the most closely related to endometrioid adenocarcinoma. (2) in 15.1% of patients with endometrioid adenocarcinoma, C allele was found in rs2297508 locus, but only 7.8% in benign control tissues (P < 0.017, P < 0.01). OR=2.131). C allele was associated with the grade of endometrioid adenocarcinoma (P0.05) and the depth of myometrial invasion (P0.05). Conclusion: (1) there are 10 SNP sites in SREBF-1 gene which may be related to the development and development of endometrioid adenocarcinoma. Further study by expanding samples may provide a theoretical basis for molecular targeted therapy of endometrioid adenocarcinoma. (2) the C allele of SNP (rs2297508) locus in the SREBF-1 gene increased the risk of endometrioid adenocarcinoma, and increased the histological grade and the depth of myometrial invasion in patients with endometrioid adenocarcinoma. It is suggested that the SNP (rs2297508) site in the SREBF-1 gene can be used as a genetic marker for the development of endometrioid adenocarcinoma. Screening the alleles of the locus may be helpful for the early detection of endometrioid adenocarcinoma.
【學(xué)位授予單位】:山東大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類(lèi)號(hào)】:R737.33
【共引文獻(xiàn)】
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