相关实验视频

Updated: Jun 12, 2025

Modified Terminal Restriction Fragment Analysis for Quantifying Telomere Length Using In-gel Hybridization

Modified Terminal Restriction Fragment Analysis for Quantifying Telomere Length Using In-gel Hybridization

Published on: July 10, 2017

使用DNA微阵列和光现场杂交的高通量单端粒分析

Yun-Ling Zheng¹, Xingjia Wu¹, Madeline Williams¹

¹Cancer Prevention and Control Program, Department of Oncology, Georgetown University Medical Center, Georgetown University, Washington, DC 20057, USA.

Nucleic acids research

|September 18, 2024

概括

新的DNA-array-FISH技术精确地测量单个端粒的长度. 这种高通量方法有助于了解端粒动态及其与疾病的联系,揭示了复杂的健康关联.

科学领域:

遗传学是一个遗传学.
分子生物学分子生物学
生物技术是生物技术.

背景情况:

人类的端粒系统是动态的,平均端粒长度 (aTL) 与癌症和死亡风险有关.
使用单个端粒分析评估端粒长度 (TL) 分布对于理解人类健康至关重要.
现有的方法可能无法提供全面TL分析所需的吞吐量或精度.

研究的目的:

开发和验证一种新的高通量方法,用于测量单个端粒的基对 (bp) 长度.
为了深入分析端粒动态及其与年龄相关疾病的关系.
为评估端粒长度分布提供精确的工具.

主要方法:

开发一种DNA微阵列和端粒光 in situ杂交 (DNA-阵列-FISH) 方法.
每个DNA样本大约32,000个单一端粒的测量,使用一个微阵列芯片对96个样本进行测量.
计算各种端粒参数,包括aTL和短/长端粒的频率.

主要成果:

DNA-array-FISH方法显示了高的测量精度,aTL变化系数在1.37%至3.98%之间.
在重复测量中观察到aTL的高相关系数 (r=0.91-1.00).
通过DNA-array-FISH测量的aTLs准确地预测了通过终端限制片段 (TRF) 分析测量的aTLs (r=0.87-0.99).

结论:

一种新的,准确的,高通量测量单基因对单端粒长度的方法已经成功开发出来.
产生的大量单端粒数据为详细分析端粒动态提供了显著的潜力.
这种方法有助于更深入地了解端粒长度与与年龄有关的疾病之间的复杂关系.

更多相关视频

Observation and Quantification of Telomere and Repetitive Sequences Using Fluorescence In Situ Hybridization FISH with PNA Probes in Caenorhabditis elegans

Observation and Quantification of Telomere and Repetitive Sequences Using Fluorescence In Situ Hybridization FISH with PNA Probes in Caenorhabditis elegans

Published on: August 4, 2016

Fluorescence In Situ Hybridization on DNA Halo Preparations to Reveal Whole Chromosomes, Telomeres and Gene Loci

Fluorescence In Situ Hybridization on DNA Halo Preparations to Reveal Whole Chromosomes, Telomeres and Gene Loci

Published on: March 4, 2021

相关概念视频

DNA Microarrays

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...