拷贝数变异对先天性心脏缺陷的遗传影响:当前见解和未来方向
Nandini Krishnamurthy1, Devi Krishna1, Sanjana1
1Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India.
Global medical genetics
|February 10, 2025
概括
副本数变异 (CNV) 是先天性心脏缺陷 (CHD) 的关键遗传原因. 先进的基因测试改善了检测,帮助诊断和个性化治疗心血管疾病.
科学领域:
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
- 医学诊断 医学诊断 医学诊断
背景情况:
- 先天性心脏缺陷 (CHD) 是最常见的出生异常,经常与副本数变异 (CNV) 等遗传因素有关.
- 涉及DNA段重复或删除的CNVs可以破坏基因调节和功能,严重影响心脏发育.
- 来自CNV的基因组不稳定性在心血管疾病的病理生理学中起着重要作用.
研究的目的:
- 审查CNV研究对先天性心脏缺陷 (CHD) 的日益重要的重要性.
- 突出通过CNV分析识别的遗传变异如何导致改进的诊断和治疗策略.
- 强调先进的基因组技术在理解和管理心血管疾病中的作用.
主要方法:
- 复习用于CNV检测的先进遗传检测技术.
- 讨论多重联结依赖探头放大 (MLPA),高通量联结依赖探头放大 (HLPA),全外体测序 (WES),染色体微阵列分析 (CMA) 和 CNV 特定测序 (CNV-seq).
- 探索全基因组测序 (WGS) 作为一种可扩展的CNV检测方法.
主要成果:
- 先进的遗传工具显著提高了与慢性病相关的CNV的检测.
- 全基因组测序 (WGS) 为大规模的CNV鉴定提供了一种强大的方法,促进早期诊断.
- 了解中枢神经瘤的作用对于制定针对心血管疾病的个性化治疗计划至关重要.
结论:
- 检测CNV对于了解心血管疾病的遗传基础和改善患者的治疗结果至关重要.
- 整合各种基因组技术可以更深入地了解心血管疾病中 CNV 功能.
- 这些知识为个性化医疗和更有效地管理先天性心脏缺陷铺平了道路.
相关概念视频
Comparing Copy Number Variations and SNPs
17.1K
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%...
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%...
17.1K
Genome Copying Errors
4.1K
DNA replication is a well-evolved process that copies millions of base pairs with high fidelity during each cell division. Occasionally a wrong base or a long stretch of wrong bases may get added to the daughter strands. If the errors are left unchecked, cells might accumulate several mutations that might endanger their survival. Therefore, the copying errors are checked and repaired at three levels.
4.1K
Single Nucleotide Polymorphisms-SNPs
13.9K
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,...
13.9K
Animal Mitochondrial Genetics
7.4K
Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
7.4K
Gene Conversion
9.6K
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...
9.6K
Mutations
78.6K
Overview
78.6K


