国家重点基础研究发展规划项目(973)(G20000161)和国家高技术“863”计划生物工程主题资助项目(2001AA213091).
This work was supported by grants from The Special Funds for Major State Basic Research of China (G20000161) of China and State 863 High-Technology R&D Project of China (2001AA213091).
到目前为止,虽然许多动物如羊、牛、猪、鼠、兔、马、骡等均已克隆成功,但克隆技术普遍存在着克隆效率低、流产率高、畸胎、巨胎和死亡率高等问题.为了较全面地探索其基因方面的原因,需要对大量的候选基因进行分析.而利用传统的RT-PCR方法从单个卵母细胞或胚胎中获得的RNA量不足以分析大量的基因.为了解决这一问题,利用并优化了一套全新的扩增细胞中整体cDNA的方法,使微量材料进行大量的基因表达分析成为现实.通过该方法研究了与发育相关的重要基因IL6、IFτ、CX43、PSMC3、oct4和DNMT1在牛卵母细胞中的表达.IL6、IFτ和CX43的表达与前人报告的结果相同,而DNMT1和PSMC3在牛卵母细胞中表达情况此前未见报道.
Nuclear transfer has been used to clone several mammalian species,including sheep, goats, cattle, pigs, mice, rabbits, houses, and mules. However, still there are many problems such as low efficiency, high abortion, malformation, huge fetus, high neonatal death need to settle. So it was important to analyze a wide variety of genes in individual cloned embryos. But using conventional RT-PCR strategies permitted analysis of only a few genes in one embryo. A global RT-PCR strategy has been used, allowing the analysis of almost hundreds of genes from a single embryo. This method was not seen used to analyze the genes in cloned embryos. Bovine oocytes have been used to investigate the expression of genes related to development such as IL6, IFτ, CX43, PSMC3, oct4, DNMT1. The results were same as those obtained by using conventional RT-PCR strategies. Further it forth the first time reported the expression of DNMT1 and PSMC3 gene in bovine oocytes.
李彦欣,李世杰,赵定胜,赵春江,杜卫华,戴蕴平,李宁.单卵RT-PCR方法的优化和对牛卵母细胞中发育相关基因的表达研究[J].生物化学与生物物理进展,2004,31(7):659-665
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