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使用DNA纤维拉伸结合端粒荧光原位杂交技术直接可视化端粒处的DNA复制

Direct Visualization of DNA Replication at Telomeres Using DNA Fiber Combing Combined with Telomere FISH.

作者信息

Gali Himabindu, Mason-Osann Emily, Flynn Rachel Litman

机构信息

Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, USA.

Department of Medicine, Cancer Center, Boston University School of Medicine, Boston, MA, USA.

出版信息

Methods Mol Biol. 2019;1999:319-325. doi: 10.1007/978-1-4939-9500-4_22.


DOI:10.1007/978-1-4939-9500-4_22
PMID:31127588
Abstract

The ability to analyze individual DNA fibers undergoing active DNA synthesis has emerged as a powerful technique in the field of DNA replication. Much of the initial analysis has focused on replication throughout the genome. However, more recent advancements in this technique have allowed for the visualization of replication patterns at distinct loci or regions within the genome. This type of locus-specific resolution will greatly enhance our understanding of the dynamics of DNA replication in regions that provide a challenge to the replication machinery. Here, we describe a protocol that will allow for the visualization of DNA replication through one of the most structurally complex regions in the human genome, the telomeric DNA.

摘要

分析正在进行活跃DNA合成的单个DNA纤维的能力,已成为DNA复制领域一项强大的技术。最初的分析大多集中在全基因组的复制。然而,这项技术最近的进展使得人们能够可视化基因组内不同位点或区域的复制模式。这种位点特异性分辨率将极大地增进我们对那些给复制机制带来挑战的区域中DNA复制动态的理解。在此,我们描述一种方案,该方案将通过人类基因组中结构最复杂的区域之一——端粒DNA,实现对DNA复制的可视化。

相似文献

[1]
Direct Visualization of DNA Replication at Telomeres Using DNA Fiber Combing Combined with Telomere FISH.

Methods Mol Biol. 2019

[2]
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[3]
Telomere and G-Quadruplex Colocalization Analysis by Immunofluorescence Fluorescence In Situ Hybridization (IF-FISH).

Methods Mol Biol. 2019

[4]
Flow cytometric analysis of fluorescence in situ hybridization with dye dilution and DNA staining (flow-FISH-DDD) to determine telomere length dynamics in proliferating cells.

Cytometry A. 2005-11

[5]
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Methods Mol Biol. 2017

[6]
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Methods Mol Biol. 2021

[7]
Telomere analysis by fluorescence in situ hybridization and flow cytometry.

Nucleic Acids Res. 1998-8-15

[8]
CO-FISH, COD-FISH, ReD-FISH, SKY-FISH.

Methods Mol Biol. 2011

[9]
Non-denaturing fluorescence in situ hybridization to find replication origins in a specific genome region on the DNA fiber.

Biosci Biotechnol Biochem. 2007-2

[10]
Visualization of Human Telomerase Localization by Fluorescence Microscopy Techniques.

Methods Mol Biol. 2017

引用本文的文献

[1]
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Nat Commun. 2022-6-10

[2]
DNA fiber combing protocol using in-house reagents and coverslips to analyze replication fork dynamics in mammalian cells.

STAR Protoc. 2022-6-17

[3]
Human CTC1 promotes TopBP1 stability and CHK1 phosphorylation in response to telomere dysfunction and global replication stress.

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