Oocytes from female mice on MF1 genetic background are not suitable for assisted reproduction†.

Oocytes from female mice on MF1 genetic background are not suitable for assisted reproduction†.
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来自具有 MF1 遗传背景的雌性小鼠的卵母细胞不适合辅助生殖。

DOI:
10.1093/biolre/ioz224
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发表时间:
2020
影响因子:
3.6
通讯作者:
Ward,MonikaA
Ward,MonikaA
中科院分区:
生物学2区
文献类型:
--
作者:
Yamauchi,Yasushiro;Ajduk,Anna;Ward,MonikaA

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2003年,我们与Paul Burgoyne(英国伦敦克里克研究所)启动了一项长期合作,并从携带Y染色体突变(YTdym1qdel)的雄性小鼠那里获得了冷冻保存的精子样本。突变发生并维持在MF1的遗传背景上。在接下来的几年里,我们从Burgoyne Lab接收了其他患有各种Y染色体缺陷的MF1雄性小鼠以及雄性和雌性野生型MF1小鼠,以在夏威夷建立MF1群体。当我们在需要ART的研究中使用不育MF1小鼠时,我们观察到,每当我们用MF1雌性小鼠的卵进行胞质内单精子注射(ICSI)时,所产生的受精卵在原核形成后不久就变形,并在两细胞阶段持续或扩大这种畸形(图1A),一些胚胎恢复并恢复正常形态,而另一些胚胎继续进行着床前发育,伴随着形状不同的畸形或停止。虽然我们在胚胎移植后获得了活的后代,但其效率明显低于将精子注入其他品系雌性卵母细胞的效率(图1B)[1]。
In 2003, we initiated a long-term collaboration with Paul Burgoyne (Crick Institute, London, UK) and received cryopreserved sperm samples from male mice carrying a Y chromosome mutation (YTdym1qdel). The mutation arose and was maintained on the MF1 genetic background. In the following years, we received from Burgoyne Lab other MF1 males with various Y chromosome deficiencies as well as male and female wild-type MF1 mice to establish the MF1 colony in Hawaii.While using infertile MF1 mice in studies requiring ART, we observed that whenever we performed intracytoplasmic sperm injection (ICSI) with oocytes from MF1 females, the resulting zygotes deformed shortly after pronuclei formation and persisted in or expanded this deformity by the two-cell stage (Figure 1A) Thereafter, some embryos recovered and regained normal morphology while other proceeded through the preimplantation development with variable shape deformities or arrested. Although we obtained live offspring after embryo transfer, the efficiency was significantly lower than when spermatozoa were injected into oocytes from females of other strains (Figure 1B)[1].
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