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RNA Splicing01:32

RNA Splicing

60.2K
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
60.2K
Single Nucleotide Polymorphisms-SNPs01:05

Single Nucleotide Polymorphisms-SNPs

17.8K
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
17.8K
Comparing Copy Number Variations and SNPs02:26

Comparing Copy Number Variations and SNPs

18.5K
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
18.5K
Alternative RNA Splicing02:18

Alternative RNA Splicing

24.6K
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
24.6K
Alternative RNA Splicing02:18

Alternative RNA Splicing

4.7K
4.7K
Pre-mRNA Processing: RNA Splicing01:36

Pre-mRNA Processing: RNA Splicing

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Updated: Jan 8, 2026

Using RNA-sequencing to Detect Novel Splice Variants Related to Drug Resistance in In Vitro Cancer Models
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Using RNA-sequencing to Detect Novel Splice Variants Related to Drug Resistance in In Vitro Cancer Models

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一个实用的框架,用于预测在外基因组测序中的单核酸变体拼接.

Yasuhiro Utsuno1, Kohei Hamanaka1, Masamune Sakamoto1,2

  • 1Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan.

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概括

我们创建了一个新的框架,以轻松评估孟德尔疾病的致病拼接单核酸变体 (SNV). 这个工具可以更好地检测出这些变异在外基因组测序数据中的变异.

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科学领域:

  • 遗传学 遗传学 是一个
  • 生物信息学是一种生物信息学.
  • 计算生物学 计算生物学

背景情况:

  • 拼接变体是孟德尔疾病的关键贡献者.
  • 预测拼接变异的致病性仍然是遗传诊断中的一个重大挑战.

研究的目的:

  • 开发一个简化的框架来评估致病拼接单核酸变体 (SNVs).
  • 为了与2023年ACMG/AMP指南和ClinGen对变种分类的建议保持一致.

主要方法:

  • 开发了一个评分系统,为开放阅读框架地区的SNV分配优先分数 (-10到14分).
  • 使用来自人类基因突变数据库的致病拼接SNV和来自gnomAD的常见SNV验证了框架.
  • 与框架对SpliceAI的歧视力进行了比较.

主要成果:

  • 与单独使用SpliceAI相比,该框架显示出更高的歧视性 (AUC 0.991 与 0.983 相比,P = 2.11 × 10−23).
  • 在1257名尚未确诊的患者中,确定了已知基因 (COL2A1,PDHA1,MECP2,JAKMIP1) 中的致病拼接变体.
  • 建议潜在的候选致病基因 (UBN1,NFE2L1).

结论:

  • 开发的框架简化了拼接SNVs的致病性评估.
  • 这种方法通过外体序列测序增强了拼接变异的检测,有助于诊断遗传疾病.