双重遗传模式:多种非综合征性遗传视网膜疾病表型,具有不同的分子机制
Lara K Holtes1, Suzanne E de Bruijn1, Frans P M Cremers1
1Department of Human Genetics, Radboud University Medical Center, Nijmegen, the Netherlands.
Progress in retinal and eye research
|November 1, 2024
概括
在遗传性视网膜疾病 (IRD) 中的双重遗传模式对遗传咨询提出了挑战. 本综述阐明了这些与IRD相关的基因双重遗传模式背后的分子机制.
科学领域:
- 遗传学 是一个遗传学.
- 眼科医生 眼科 眼科
- 分子生物学分子生物学
背景情况:
- 遗传性视网膜疾病 (IRD) 呈现出显著的临床和遗传异质性.
- 一些与IRD相关的基因存在致病变异,导致自体主导 (AD) 或自体递归 (AR) 遗传模式.
- 这种双重遗传使变异解释和患者的遗传咨询变得复杂.
研究的目的:
- 对IRD相关基因的双重遗传模式背后的分子机制进行系统的审查和建立.
- 根据基因的双重遗传机制是否被很好地理解,不被很好地理解,或有疑问来对基因进行分类.
- 突出功能研究和等位基因频率数据对于理解这些复杂的遗传模式的重要性.
主要方法:
- 个人基因分析专注于蛋白质结构和功能.
- 报告的致病变异及其相关遗传模式 (AD/AR) 的审查.
- 评估有关分子机制,功能研究和等位基频率数据的现有文献.
主要成果:
- 在具有双重遗传模式的基因中确定了重叠的特征.
- 对CRX和RP1.1等基因观察到AR和AD变异的独特空间模式.
- 突出了具有可疑双重遗传性的特定基因 (AIPL1,CRB1,RCBTB1),强调了等位基因频率数据的作用.
结论:
- 在IRD基因中双重遗传的分子基础有所不同,其中一些机制已经确立,而另一些则需要进一步研究.
- 有限的致病变体或热点区域可能会导致观察到的双重遗传.
- 模型系统中的功能性研究对于验证变异效应和理解IRD中复杂的遗传模式至关重要.
相关概念视频
Genetic Lingo
101.3K
Overview
101.3K
Pedigree Analysis
84.0K
Overview
84.0K
Incomplete Dominance
21.7K
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
21.7K
Inheritance
343
Gregor Mendel's pioneering work on the principles of inheritance fundamentally transformed our understanding of how traits are transmitted from generation to generation. His experiments with pea plants laid the groundwork for the discovery of genes, discrete units within organisms that control heredity.
Each gene exists in pairs, and the combination of these genes from both parents forms an individual's genotype. This genotype is a blueprint of potential traits. Examples of genotype...
Each gene exists in pairs, and the combination of these genes from both parents forms an individual's genotype. This genotype is a blueprint of potential traits. Examples of genotype...
343
Epistasis
46.1K
In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
46.1K
Multiple Allele Traits
34.0K
The Concept of Multiple Allelism
34.0K


