背景:囊胚培养液是可以支持胚胎从受精卵发育到囊胚阶段的一种重要培养液,其安全性直接影响囊胚的质量.目的:观察囊胚培养液对小鼠胚胎发育的影响.方法:选用B6D2F1品系小鼠,将雌性小鼠进行超数排卵处理,与同品系雄鼠合笼过夜,次日收集1细胞期受精卵,在 M16 培养液中培养至 4 细胞期后,检查胚胎发育情况并转移到受试囊胚培养液中继续培养(实验组),5 d后检查囊胚发育情况并计算囊胚形成率.同时,用含有内毒素的囊胚培养液M16培养小鼠受精卵,作为阳性对照组;用已被证实没有胚胎毒性的囊胚培养液M16培养液培养1细胞期受精卵,作为阴性对照组.结果与结论:阳性对照组囊胚形成率为 0,阴性对照组囊胚形成率为 87.1%,实验组囊胚形成率为 87.3%,实验组囊胚形成率大于80%,说明受试囊胚培养液可以支持小鼠受精卵正常发育到囊胚阶段,对胚胎没有毒性效应.%BACKGROUND:The blastula culture medium can assist the development of zygote from the fertilized egg to the blast blastula. The safety and quality of blastula culture medium directly influences the quality of blastula. OBJECTIVE:To evaluate the effect of blastula culture medium on the development of mouse embryos. METHODS: In this study, B6D2F1 mice were used. The female mice were superovulated and mated with male B6D2F1 mice. One day later, the zygotes were colected and cultured in the M16 medium to 4-cel stage. Then, 4-cel stage embryos were transferred into the tested blastula culture medium (experimental group). After 5 days of culture, the forming rate of blastula was examined. Meanwhile, the M16 medium containing endotoxin was used to culture 1-cel mouse zygote (positive control group). The M16 medium with no embryo toxicity was used to culture 1-cel zygote (negative control group). RESULTS AND CONCLUSION:The formation rate of blastula was 0 in the positive group, 87.1% in the negative control group, and 87.3% in the experimental group. From the results, the tested blastula culture medium could assist the 1-cel zygote growing to the stage of blastula, and the formation rate of blastula was above 80%. The tested blastula culture medium had no toxicity to the mouse embryo.
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