BGJ398對豬孤雌胚胎發(fā)育及滋養(yǎng)層發(fā)育潛能相關(guān)基因表達的影響
[Abstract]:The embryo divides from one omnipotent fertilized egg to form several blastomeres with almost the same developmental potential. As the shape of the embryo changes, a cavity is formed. At this time, the blastomere then differentiates into an inner cell mass (ICM), which then develops into the fetus and part of the placental tissue, and the trophoblast (T cell) in the outer layer. E), which later became part of the placenta, plays an important role in embryo implantation and pregnancy maintenance. Previous studies have shown that inhibiting the FGF signaling pathway in Buffalo blastocysts can increase the number of cells in the blastocyst * and the increase in cell numbers mainly comes from trophoblasts. In addition, studies in pigs also show that inhibition of FGF signaling pathway can not affect.TE. On the premise of normal embryo development and expression of related pluripotent genes, the expression level of trophoblast marker gene CDX2 can be significantly improved. However, the activation of FGF signaling pathway can significantly reduce the expression of CDX2. Although the mechanism is temporarily unknown, it may become a very promising research direction. * Few studies have been done on trophoblasts, and there is no criterion for measuring the development potential of trophoblasts in early embryos. The expression of CDX2, a trophoblast marker, is usually used as a criterion for trophoblastic cell development. A criterion for evaluating the development potential and increasing the number of cells and the expression of related markers/functional genes provide a very practical approach to improve the efficiency of subsequent embryo transfer. BGJ-398, a 5,10,15,20 Mu inhibitor of FGF signaling pathway, was cultured in basal medium for 168 hours to collect blastocysts. The blastocyst rate, the number of trophoblast cells and the expression of related genes were compared with DMSO control group. The results showed that: 1. BGJ-398 added to basal medium did not affect the formation and normal development of blastocysts, but with DMSO control group. Compared with the DMSO control group, the blastocyst rate of 5 mu M group increased significantly (29.64% vs 22.97%, P 0.05). The blastocyst rate of 10 mu M group increased slightly but the difference was not significant (24.68% vs 22.97%, P 0.05). When the concentration increased to 15 mu M, 20 mu M, the blastocyst rate decreased, indicating that excessive concentration inhibited the formation of blastocysts. Comparing with the control group, the number of blastocyst cells in 5_ M group was significantly increased (54.2 7.92 vs 45.16 8.75, P 0.05). The number of blastocyst cells in 10_ M group increased slightly but the difference was not significant (45.16 8.75 vs 48.2 4.32, P 0.05). The average number of blastocysts in 15_ M and 20_ M groups was lower than that in the control group. The results showed that compared with the control group, the expression of KLF4 was significantly increased by 6.28 times (P 0.05), while the expression of OCT4 was 1.50 times (P 0.05), and the expression of SOX2 was significantly increased by 3.45 times (P 0.05). The expression level of CDX2 gene was increased by 2.93 * (P0.05).2.BGJ398 significantly to promote the expression of the marker related genes of pig PA blastocyst trophoblast. By PCR detection, we found that GATA3, TEAD4, CCDX2, OCT4, TERT, OEMES, and OCT4 were expressed in blastocysts. These results suggest that GATA3, TEAD4, CDX2, OCT4, TERT, OEMES and FGFR2 can be used as evaluation genes for trophoblast cell detection in subsequent experiments. The expression of GATA3 in CDX2 upstream gene increased by 1.49 times and 2.14 times in 5 and 10 mu M groups respectively (P 0.05), but the difference was not significant; the expression of TERT in CDX2 upstream gene increased by 3.03 and 1.70 times compared with the control group (P 0.05); the expression of TEAD4 in CDX2 upstream regulatory factor also increased significantly, and the expression of TEAD4 in 5 mu M group increased significantly. The expression levels of FGFR2 were 2.00 and 2.09 times (P 0.05) as compared with the control group, and that of EOMES was 3.18 times (P 0.05) and 1.52 times (P 0.05) as compared with the control group. 3, the expression level of TEAD4 CDX2, OCT4, TERT and OEES increased significantly. It was speculated that BJG398 could enhance the developmental potential of trophoblastic cells and thus indirectly enhance the embryo implantation ability. * in conclusion, adding 5 MBGJ398 to pig embryo culture medium can promote the number of blastocysts and blastocyst cells, and promote pluripotent related genes and blastocyst nourishment. The expression of marker genes related to the development of cell * s layer lays the foundation for further discussion on the success rate of porcine embryo transfer.
【學(xué)位授予單位】:廣西大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:S828
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