小瞼裂綜合征相關(guān)基因Foxl2對(duì)Hela和Siha的生物學(xué)作用
[Abstract]:Blephar-ophimosis-ptosis-epicanthus inversus syndrome (BPES) is an autosomal dominant hereditary disease, which is found in the clinical department. Its related gene -Foxl2 is a single exon encoded fork head transcription factor, and gene mutation can lead to the occurrence of small eyelid cleft syndrome. In female patients, BPES is divided into Two types: type I with premature ovarian failure, and II type ovarian function and normal [1,2].Foxl2 transcript of normal fertility, m RNA was previously found in the eyelids of mouse embryos, and in embryos and sexually mature mice, [1,3].Foxl2 has been expressed on the ovarian granulosa cells, [4]. in the adolescent population, ovarian granulosa cell tumor (OGCTs), and in the ovarian granulosa cells (OGCTs). To decrease [5]., Shah and so on in 2009 found that the mutation of the somatic cell Foxl2, that is, the mutation of 402C to G[5]., appears in 97% of the adult ovarian granulosa cell tumor (OGCTs), and that the tumor type is a specific [6-10]. and there is a Foxl2 site inactivation in the present colorectal cancer, which is more interesting in the hypermethylation of somatic cells. Yes, this mutation of Foxl2 has not been found in any of the sexual cord stromal cell tumors and unrelated ovarian and breast cancers, and the expression of the Foxl2 gene is found in Wegman P, such as Wegman P, and this may be associated with the increasing function of the.BPES related gene Foxl2 related to the expression of aromatase and its clinical prognosis. Now. Foxl2 related genes of the cleft palpebral syndrome have been studied, such as eyelids, genetics, ovarian function and a small number of tumors. Tumor related studies are limited to colorectal, other sexual stromal tumors, breast and ovarian cancers. As we know, Foxl2 has not been studied in cervical cancer. We analyzed and discussed the expression of Foxl2 in cervical cancer and the biological effect of Foxl2 on cervical cancer cells. Part 1 the expression of Foxl2 in cervical cancer was detected in cervical cancer, and the expression of Foxl2 in cervix cancer tissues was detected, and the two types of Foxl2 were detected in cervical adenocarcinoma and squamous cell carcinoma. The level of transcriptional RNA in the cell lines. Methods the cancerous tissues of 37 patients with cervical cancer were divided into two groups: a group of adenocarcinoma, a group of squamous cell carcinoma, and 8 cases of cervical intraepithelial neoplasia (CIN), including 5 cases of low degree squamous intraepithelial neoplasia (LSIL), and 10 cases of high squamous intraepithelial neoplasia (HSIL). The pathological tissue of 10 patients with cervicitis was used as the control group. Immunohistochemical staining was used to detect the expression of Foxl2 in cervical cancer tissue, cervical intraepithelial neoplasia and control group. Then, the adenocarcinoma cell lines (Hela cells) and squamous cell carcinoma cell lines (Siha cells) were cultured for human cervical cancer, and RNA was extracted, and reverse transcriptase was used. The expression of the Foxl2 gene in the two cell lines of this cancer was detected by the Reverse transcription polymerase chain reaction (RT-PCR) technique. The results of immunohistochemical staining showed that the positive rate of Foxl2 in the slices of cervical squamous cell carcinoma was significantly higher than that of the CIN group and the control group, and Foxl2 was in the uterus. The expression level of protein in the tissues of cervical squamous cell carcinoma was higher than that of cervical adenocarcinoma and other groups. In the cervical adenocarcinoma group, the Foxl2 protein was not expressed in the CIN group and the cervicitis group, and there was no significant difference between the.RT-PCR results and the m RNA. conclusion that Hela cells and Siha cells could transcribe Foxl2 in the squamous cell carcinoma of the cervix. Compared with cervical adenocarcinoma, cervical CIN tissue and cervicitis, Hela and Siha cells can transcribe Foxl2 m RNA. based on Foxl2 in cervical adenocarcinoma and squamous cell carcinoma, and the expression level of these two tissues is different. We will further study the biological role of Foxl2 gene in cervical cancer cells. Second part of the small lid cleft synthesis. The biological effect of the associated gene Foxl2 on cervical cancer cell lines, aim to construct a model of two cell lines, overexpress the Hela cells of Foxl2 and the Siha cell model of the silent Foxl2, and study the effects of Foxl2 on the proliferation, apoptosis, adhesion and invasion of these two cells, so as to analyze the biological effects of Foxl2 on cervical cancer. Hela cells were transfected with Foxl2 plasmid to express Foxl2, and the expression of Foxl2 gene in Siha cells was silenced. The transfection efficiency was verified by protein immunoblotting (Western Blotting), and the expression and silence model was identified. The proliferation ability of Hela and Siha was detected by Brdu method after the Foxl2 was overexpressed or silenced. The apoptosis rate of a and Siha cells, the adhesion ability of Hela and Siha cells was detected by the adhesive kit, and the invasiveness of two kinds of cell lines expressing and silent Foxl2 were detected by invasive assay, and FCM was used to detect Hela cells expressing Foxl2 and Ki67 in Siha cells with silent Foxl2, and cell proliferating nuclear antigen ( The expression of proliferating cell nuclear antigen, PCNA) and Fas L was used to further detect and analyze the expression of the related factors regulating proliferation and apoptosis. Results Western Blotting results, compared with the control group, the Foxl2 expression in the overexpressed Hela cells was significantly increased; the expression of the silent Siha cells decreased significantly, and the transfection was visible. The results of the successful model construction of.Brdu and Annexin V/PI showed that compared with the control group, the proliferation ability of Hela was obviously inhibited after overexpression of Foxl2 (P0.01), the proliferation ability of the silent group increased and its apoptosis decreased significantly (P0.001). The adhesion of over expressed Hela cells was not significantly altered, but the silence of Foxl2 could promote the adhesion of Siha. The invasion ability of the cells in the overexpressed group decreased significantly (P0.05), and the cell invasiveness in the silent group increased (P0.05).PCM results showed that the expression level of Ki67 in the overexpressed Hela was significantly decreased (P0.001), the expression of Fas L increased (P0.01). The expression of Ki67 in the silent Siha increased significantly (P0.001), and the expression level of Fas L decreased. There was no obvious change in the expression of PCNA in the over expression or silent cell group. Conclusion the results showed that the small lid fissure related gene Foxl2 inhibited the proliferation of Hela and Siha in cervical cancer cells and promoted apoptosis, and inhibited the invasion ability of Hela and Siha; at the same time, it promoted the adhesion of Siha, but Foxl2 had no significant effect on the adhesion ability of Hela cells. In addition, Foxl2 (Foxl2) had no significant effect on the adhesion of Hela cells. Down regulation of the expression level of Ki67 in Hela and Siha cells, and up regulation of the expression of Fas L in Hela and Siha. To sum up, our experimental results show that Foxl2 is highly expressed in cervical squamous cell carcinoma. On the one hand, Foxl2 inhibits the proliferation of cervical cancer cells and inhibits its apoptosis. This biological effect is mainly Foxl2 by down Ki67 expression and in the expression of Foxl2. Up - regulation the expression level of Fas L; on the other hand, Foxl2 may be a new tumor suppressor, at least in cervical cancer. This may be of value in the evaluation of metastasis and recurrence of cervical cancer, but further research is still needed.
【學(xué)位授予單位】:濰坊醫(yī)學(xué)院
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:R737.33
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