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从苍蝇到哺乳动物的绝缘子和印记。

Insulators and imprinting from flies to mammals.

机构信息

Department of Biology, Emory University, 1510 Clifton Road NE, Atlanta, GA 30322, USA.

出版信息

BMC Biol. 2010 Jul 30;8:104. doi: 10.1186/1741-7007-8-104.

DOI:10.1186/1741-7007-8-104
PMID:20687908
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2912829/
Abstract

The nuclear factor CTCF has been shown to be necessary for the maintenance of genetic imprinting at the mammalian H19/Igf2 locus. MacDonald and colleagues now report in BMC Biology that the mechanisms responsible for maintaining the imprinted state in Drosophila may be evolutionarily conserved and that CTCF may also play a critical role in this process. See research article http://www.biomedcentral.com/1741-7007/8/105.

摘要

核因子 CTCF 已被证明是维持哺乳动物 H19/Igf2 基因座遗传印记所必需的。MacDonald 及其同事现在在 BMC 生物学杂志上报道称,维持果蝇印迹状态的机制可能在进化上是保守的,而且 CTCF 也可能在这个过程中发挥关键作用。详见研究文章,网址:http://www.biomedcentral.com/1741-7007/8/105。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/80c1/2912829/e05c079dce1f/1741-7007-8-104-1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/80c1/2912829/e05c079dce1f/1741-7007-8-104-1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/80c1/2912829/e05c079dce1f/1741-7007-8-104-1.jpg

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1
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2
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本文引用的文献

1
The Drosophila homolog of the mammalian imprint regulator, CTCF, maintains the maternal genomic imprint in Drosophila melanogaster.果蝇中哺乳动物印记调控因子 CTCF 的同源物维持了黑腹果蝇的母本基因组印记。
BMC Biol. 2010 Jul 30;8:105. doi: 10.1186/1741-7007-8-105.
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CTCF: master weaver of the genome.CTCF:基因组的主要编排者。
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CTCF binding at the H19 imprinting control region mediates maternally inherited higher-order chromatin conformation to restrict enhancer access to Igf2.CTCF在H19印记控制区域的结合介导了母系遗传的高阶染色质构象,以限制增强子对Igf2的作用。
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CTCF mediates methylation-sensitive enhancer-blocking activity at the H19/Igf2 locus.CCCTC结合因子(CTCF)介导H19/胰岛素样生长因子2(Igf2)基因座处的甲基化敏感增强子阻断活性。
Nature. 2000 May 25;405(6785):486-9. doi: 10.1038/35013106.
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Methylation of a CTCF-dependent boundary controls imprinted expression of the Igf2 gene.一种依赖CTCF的边界的甲基化控制Igf2基因的印记表达。
Nature. 2000 May 25;405(6785):482-5. doi: 10.1038/35013100.
9
Genomic imprinting and position-effect variegation in Drosophila melanogaster.黑腹果蝇中的基因组印记和位置效应斑驳现象。
Genetics. 1999 Apr;151(4):1503-16. doi: 10.1093/genetics/151.4.1503.
10
Completion of mouse embryogenesis requires both the maternal and paternal genomes.小鼠胚胎发育的完成需要母本基因组和父本基因组。
Cell. 1984 May;37(1):179-83. doi: 10.1016/0092-8674(84)90313-1.