Juno is the egg Izumo receptor and is essential for mammalian fertilization.

Juno is the egg Izumo receptor and is essential for mammalian fertilization.
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DOI:
10.1038/nature13203
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发表时间:
2014-04-24
期刊:
影响因子:
64.8
通讯作者:
--
中科院分区:
综合性期刊1区
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--
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受精发生在精子和卵子相互识别并融合形成一个新的,遗传上不同的生物体。精卵识别的分子基础是未知的,但可能需要在其表面上显示的受体蛋白之间的相互作用。Izumo1是一种重要的精子细胞表面蛋白,但它的卵子受体仍然是一个谜。在这里,我们确定Juno作为小鼠卵上Izumo1的受体,并表明这种相互作用在哺乳动物中是保守的。缺乏Juno的雌性小鼠是不育的,缺乏Juno的卵子不能与正常的精子融合。受精后朱诺从卵膜上迅速脱落,这表明了一种膜阻塞多精受精的机制,确保卵子正常地只与一个精子融合。我们在受孕关系中发现了一对重要的受体,这为合理开发新的生育治疗和避孕药提供了机会。
Fertilisation occurs when sperm and egg recognise each other and fuse to form a new, genetically distinct organism. The molecular basis of sperm-egg recognition is unknown, but is likely to require interactions between receptor proteins displayed on their surface. Izumo1 is an essential sperm cell surface protein, but its egg receptor has remained a mystery. Here, we identify Juno as the receptor for Izumo1 on mouse eggs, and show this interaction is conserved within mammals. Female mice lacking Juno are infertile and Juno-deficient eggs do not fuse with normal sperm. Rapid shedding of Juno from the oolemma after fertilisation suggests a mechanism for the membrane block to polyspermy, ensuring eggs normally fuse with just a single sperm. Our discovery of an essential receptor pair at the nexus of conception provides opportunities for the rational development of new fertility treatments and contraceptives.
DOI: 10.1038/73502
发表时间: 2000-03-01
期刊: NATURE GENETICS
影响因子: 30.8
作者:
Kaji, K;Oda, S;Kudo, A
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发表时间: 2012-03-05
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