小鼠受精卵模擬微重力差異基因的驗證及Ndufa4對其體外發(fā)育的影響
[Abstract]:In our laboratory, the simulated microgravity environment produced by (RWVB) was used to culture mouse fertilized eggs in vitro, and the effect of simulated microgravity environment on mouse fertilized eggs was observed using plane culture as control. By single cell sequencing, seven differentially expressed genes were found in the fertilized eggs of C57 mice cultured at 20 h after hCG 20 h hCG and 9 h in microgravity culture at 20 h after hCG. In this study, Kunming mice were used to study the relative expression of the seven differential genes Tmem59 (Tmem59) Teddm1bQ-PCR 1600010M07RikTts and Ndufa4Nts and Papolog, and compared with the results of single cell sequencing. The differential gene Ndufa4 was selected to study the functional mechanism of Ndufa4 by Q-PCR, vector construction, interference and microinjection. HCG was used as the control group (group A) for 20 h, the plane culture was continued for 9 h (group D), and the culture condition of microgravity was continued for 9 h (group E). By single cell sequencing, we found that there were seven genes in group E and D, which were more than 1.5 times different. In this study, seven single-cell sequencing results of Tmem59-Teddm1bC1600010M07RikNts and Papolog in fertilized eggs of Kunming mice showed that the relative expression of these seven genes in group D and E were significantly different from those in group D and E: Lars2Tmem59Ndufa4 and 16000M07Rikhe. No significant difference was found between Papolg and NTS, while the Teddm1b gene was not detected due to its low expression level. The accuracy of single cell sequencing was 66.7%. The Ndufa4 gene was preliminarily screened, and the expression vector and interference siRNAs of Ndufa4 were constructed by using the state of both female and male prokaryotes at 20 h after hCG as the fertilization marker. The effects of microinjection on the development of fertilized eggs were observed. The results showed that the blastocyst rate of mouse fertilized eggs decreased significantly after microinjection. The relative expression levels of Bcl-xl and Bcl-2 genes of Bcl family were detected by Q-PCR using microinjected water 20 h after hCG as control and pEGFP-Ndufa4 expression vector microinjected as experimental group. Bcl-xl and Bcl-2 were used as anti-apoptotic genes. The results showed that overexpression of Ndufa4 gene significantly increased the expression of Bax and Bak in mice, and the relative expression of cyt C protein, which caused apoptosis in mitochondria, was also significantly increased. The relative expression of Bcl-xl and Bcl-2 genes (Bcl-xl and Bcl-2) of Bcl family were detected by Q-PCR using microinjected water 20 h after hCG as control group and SiRNA microinjected with Ndufa4 as experimental group. The results showed that interfering with the expression of Ndufa4 gene in mice resulted in a significant increase in the relative expression of Bax. The overexpression or interference of Ndufa4 might affect the expression of apoptosis factors and eventually lead to apoptosis in fertilized eggs.
【學(xué)位授予單位】:華南農(nóng)業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:Q68
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