Mcph1 mRNA在小鼠早期妊娠子宮中的表達研究
[Abstract]:MCPH1 also known as BRIT1, encodes Microcephalin protein. MCPH1 mutations can lead to an autosomal recessive genetic disease called primary microcephaly. MCPH1 inhibits the expression of telomere terminal transferases. MCPH1 also plays an important role in maintaining genomic stability. MCPH1 is associated with cell cycle regulation, DNA damage response, apoptosis, tumorigenesis and development. In this study, in situ hybridization was used to detect the expression of Mcph1 mRNA in the uterus of various mouse models, including early pregnancy model, pseudo pregnancy model, artificial induced decidualization model and delayed implantation and activation model. According to the experimental results, the expression of Mcph1 mRNA was weak on the first day of pregnancy, and the signal only appeared in the uterine cavity epithelium. Mcph1 mRNA was expressed in uterine cavity epithelium and glandular epithelium on the 2nd day of pregnancy. On the third day of gestation, the signal expression was observed only in the luminal epithelium. The signal intensity of Mcph1 mRNA on day 2-4 was increased compared with that on day 1, but the signal intensity was almost the same on the 3rd day of gestation compared with that on day 1. On the 5th day of gestation, Mcph1 mRNA signal was expressed not only in the luminal epithelium, but also in the primary decidua region. From the 6th day of gestation to the 8th day of pregnancy, the signal expression was mainly concentrated in the primary decidua area, and gradually spread to the decidua area from the 7th day, and the whole uterine tissue was basically covered on the 8th day of gestation. The expression of Mcph1 mRNA signal on day 1-4 of pseudopregnancy was similar to that on day 1-4 of pregnancy. Except for day 1 and day 3, it appeared only in luminal epithelium, and on day 2, it appeared in both luminal epithelium and glandular epithelium. And the Mcph1 mRNA signal intensity has not changed. In the artificial decidualized uterine tissue, a certain intensity of signal expression could be detected in the decidua region, similar to the expression on the 8th day, and in the uterine cavity epithelium and glandular epithelium in the artificial decidualized control group. In the mouse uterus with delayed implantation and activation model, the signal was observed not only in the uterine cavity epithelium and glandular epithelium, but also in the primary decidualization region, which was similar to that on the 5th day of pregnancy. In delayed implantation, signals were observed only in luminal and glandular epithelium. In addition, real-time quantitative PCR was used to detect the expression of Mcph1 mRNA in the uterus of mouse model of early pregnancy. The results showed that the expression of Mcph1 mRNA was gradually increased during the 1-3 days of gestation, compared with that of the first day of pregnancy. The relative expression reached the highest level on the 3rd day, decreased on the 4th day, and increased on the 5th day, but the relative expression level was still lower than that on the 3rd day, and decreased gradually on the 5-8 day of gestation. These results suggest that Mcph1 mRNA's surface changes in time and space during embryo implantation, suggesting that Mcph1 may play a role in this process.
【學(xué)位授予單位】:東北林業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:R742
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