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相关概念视频

Next-generation Sequencing03:00

Next-generation Sequencing

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The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
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Sanger Sequencing01:57

Sanger Sequencing

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DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...
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Maxam-Gilbert Sequencing01:05

Maxam-Gilbert Sequencing

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In the same year as the discovery of the Sanger sequencing method, another group of scientists, Allan Maxam and Walter Gilbert, demonstrated their chemical-cleavage method for DNA sequencing. The Maxam-Gilbert method relies on using different chemicals that can cleave the DNA sequence at specific sites, the separation of resulting DNA fragments of variable size using electrophoresis, and deciphering the DNA sequence from the resulting gel bands.
Challenges of the Maxam-Gilbert Method
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Gene Conversion02:08

Gene Conversion

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Other than maintaining genome stability via DNA repair, homologous recombination plays an important role in diversifying the genome. In fact, the recombination of sequences forms the molecular basis of genomic evolution. Random and non-random permutations of genomic sequences create a library of new amalgamated sequences. These newly formed genomes can determine the fitness and survival of cells. In bacteria, homologous and non-homologous types of recombination lead to the evolution of new...
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RNA-seq03:21

RNA-seq

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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
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DNA Base Pairing02:27

DNA Base Pairing

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Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
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相关实验视频

Updated: Jun 5, 2025

Targeted DNA Methylation Analysis by Next-generation Sequencing
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BASAL:用于核酸基转换测序的通用映射算法.

Moping Xu1,2, Xiaoyang Liu3, Miao Wang1,2

  • 1Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of the Ministry of Education, Orthopaedic Department of Tongji Hospital, Tongji University, 389 Xincun Road, Shanghai 200065, China.

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概括
此摘要是机器生成的。

BASAL (BAse转换测序 ALigner) 准确地绘制了各种RNA和DNA基基修饰的地图. 这种新工具通过提高分析准确性和效率来增强表观遗传学和表观转录学研究.

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相关实验视频

Last Updated: Jun 5, 2025

Targeted DNA Methylation Analysis by Next-generation Sequencing
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Rare Event Detection Using Error-corrected DNA and RNA Sequencing
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科学领域:

  • 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
  • 分子生物学分子生物学
  • 生物信息学是一种生物信息学.

背景情况:

  • 基基转换 (BC) 技术使得RNA和DNA修改的单基分辨率分析成为可能.
  • 不同的BC策略,包括单向,多向和删除诱导的转换,对现有的序列对齐器构成挑战.
  • 当前对齐器在处理BC数据时经常表现出错位和低效率.

研究的目的:

  • 介绍BASAL (BAse-conversion Sequencing ALigner),一种新型的序列对齐器,旨在处理各种BC策略.
  • 为了提高RNA和DNA修饰测序数据映射的准确性和效率.
  • 促进先进的表观遗传学和表观转录学分析,包括单细胞研究.

主要方法:

  • 开发使用比特掩盖技术的BASAL,用于准确计算不匹配处罚.
  • 实施对广泛的BC战略提供支持.
  • 使用模拟和真实测序数据进行验证,并进行实验验证.

主要成果:

  • 与最先进的工具相比,BASAL表现出卓越的绘图精度和效率.
  • 调整器有效地识别可靠的RNA和DNA修饰部位.
  • 巴萨尔增强了单细胞m6A分析,揭示了细胞亚群和进化轨迹.

结论:

  • 贝萨尔是用于RNA和DNA修饰测序的多功能和准确的通用对齐器.
  • 该工具克服了现有对齐器在处理各种BC策略方面的局限性.
  • 巴萨尔准备在表观遗传学和表观转录学研究中取得重大进展.