Clerc P, Avner P
G|n|tique Mol|culaire Murine, Institut Pasteur, Paris 75015, France.
Science. 2000 Nov 24;290(5496):1518-9. doi: 10.1126/science.290.5496.1518.
Inactivation of one of the two X chromosomes occurs in all cells of female adult mice so that genes are expressed from only one X chromosome. In a Perspective, Clerc and Avner describe an elegant series of experiments in mouse embryos cloned from adult and embryonic female cell nuclei (Eggan et al.) that reveal how the inactivation state of the X chromosomes is reprogrammed.
在成年雌性小鼠的所有细胞中,两条X染色体中的一条会发生失活,从而使得基因仅从一条X染色体上表达。在一篇《观点》文章中,克莱克和阿夫纳描述了一系列用成年雌性和胚胎雌性细胞核克隆的小鼠胚胎所做的精妙实验(埃根等人),这些实验揭示了X染色体的失活状态是如何被重新编程的。