相关实验视频

Updated: Jul 10, 2025

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila

Published on: August 20, 2019

在母体体基因中罕见的功能丧失变异在埃布斯坦异常中得到丰富

Zhou Zhou¹, Xia Tang², Wen Chen¹

¹Department of Laboratory Medicine, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, P.R. China.

|November 25, 2023

概括

遗传分析显示,母体体基因中罕见的高自信性功能丧失变异与埃布斯坦相关.

科学领域:

遗传学是一个遗传学.
心脏病学心脏病学
发育生物学发展生物学

背景情况:

埃布斯坦异常是一种罕见的先天性心脏缺陷,其特征是三管的异常发育.
了解埃布斯坦异常的遗传基础对于阐明其病变发生至关重要.
之前的研究已经确定了遗传因素,但需要对罕见变异进行全面分析.

研究的目的:

确定与中国汉族人群中埃布斯坦异常相关的罕见功能变体和高信心丧失功能 (HC LoF) 变体.
研究特定基因和生物通路,特别是母体体,在疾病的发病过程中的作用.
提高对埃布斯坦异常遗传结构的理解,以改善诊断和治疗.

主要方法:

在两个队列中进行了全外体序列测序:82个无关病例和36个父子三组 (共315名参与者).
罕见的变异 (MAF<0.1%) 和HC LoF变异是使用严格的标准来确定的.
应用了统计模型,包括负载和变异组件测试,以分析与埃布斯坦异常的变异关联.

主要成果:

在母体体相关基因中的埃布斯坦异常和罕见的HC LoF变体之间发现了显著的关联.
47个具有HC LoF变异的基因在病例中被完全或主要发现,在试验者中发现了9个基因.
超过一半的无关病例 (42/82) 和12个试验者在优先的母体基因中携带一个或两个LoF变异.

结论:

母体体在埃布斯坦异常的发病过程中起着重要作用.
鉴定这些遗传变异有助于更深入地了解疾病的遗传基础.
这些发现对基因诊断和埃布斯坦异常的潜在治疗策略有影响.

关键词:

埃布斯坦的异常情况这就是LoF的意义.外基因组测序是指外基因组的测序.遗传学遗传学遗传学是一个功能丧失的变种.一个母体组的母体组.

更多相关视频

Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information

Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information

Published on: August 15, 2019

A Scalable, Cell-Based Method for the Functional Assessment of Ube3a Variants

A Scalable, Cell-Based Method for the Functional Assessment of Ube3a Variants

Published on: October 10, 2022

相关概念视频

Nondisjunction

Nondisjunction

Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate correctly and move to the opposite poles of the cells. This produces daughter cells with abnormal chromosome numbers. Nondisjunction is common during anaphase I or anaphase II of meiosis. Mutations in synaptonemal complex proteins that attach homologous chromosomes increase the chances of nondisjunction in anaphase I of meiosis I. In contrast, mutations in topoisomerases and condensins that hold...

Genomic Imprinting and Inheritance

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...

Mismatch Repair

Mismatch Repair

Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...

Animal Mitochondrial Genetics

Animal Mitochondrial Genetics

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...