相关实验视频

Updated: Jul 12, 2025

Optimized Bone Sampling Protocols for the Retrieval of Ancient DNA from Archaeological Remains

Optimized Bone Sampling Protocols for the Retrieval of Ancient DNA from Archaeological Remains

Published on: November 30, 2021

aKmerBroom:在k-mer套件上使用Bloom过器对古代口腔DNA进行消毒

Camila Duitama González^1,2, Samarth Rangavittal³, Riccardo Vicedomini¹

¹Institut Pasteur, 75015 Paris, France.

|October 25, 2023

概括

aKmerBroom是一个新的工具,可以从古老的口腔样本中去除污染的DNA,而不需要参考数据库. 这种方法改善了古代DNA研究的数据处理,防止有价值的数据集被丢弃.

科学领域:

古代DNA分析古代DNA分析
转基因组学是指转基因组学.
生物信息学是一种生物信息学.

背景情况:

牙科微积分DNA分析受到污染DNA的挑战.
现有的净化工具需要参考数据库或负控制,这限制了它们的应用.
古代口腔样本特别容易受到污染,使下游分析复杂化.

研究的目的:

开发一个无引用的计算工具,aKmerBroom,用于从古老的口腔样本中去除污染的DNA.
提供一种提高古代元基因组数据可用性的方法.

主要方法:

aKmerBroom使用了由已知的古老和现代口腔k-mers构建的Bloom过器.
该工具反复扫描元基因组读取,以识别和保留口腔来源的序列.
采用无引用方法,消除了对外部数据库或负控制的需求.

主要成果:

aKmerBroom在合成数据上表现出高灵敏度和特异性.
与现有方法相比,该工具在真实数据集上实现了较高的读取保留率.
平均读取保留率得到了显著的改善,保留了更真实的古老的口腔DNA.

结论:

aKmerBroom提供了一种有效的解决方案,用于消毒古老的口腔DNA样本.
aKmerBroom的无引用性扩展了它对各种古老的口头数据集的适用性.
预计该工具将大大有利于对古代口腔微生物组的分析,并防止数据丢失.

关键词:

生物计算方法是一种生物计算方法.微生物基因组学微生物基因组学古遗传学是一种古遗传学.序列分析是指进行序列分析.

更多相关视频

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside

Published on: July 3, 2016

Primer Extension Capture: Targeted Sequence Retrieval from Heavily Degraded DNA Sources

Primer Extension Capture: Targeted Sequence Retrieval from Heavily Degraded DNA Sources

Published on: September 3, 2009

相关概念视频

DNA Isolation

DNA Isolation

DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...

Southern Blot

Southern Blot

Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...