相关实验视频

Updated: Jan 18, 2026

A Strategy to Identify de Novo Mutations in Common Disorders such as Autism and Schizophrenia

A Strategy to Identify de Novo Mutations in Common Disorders such as Autism and Schizophrenia

Published on: June 15, 2011

在四个家族中通过全外测序来识别具有遗传性眼睛疾病的变体

Afeefa Jarral^1,2, Rabia Basharat², Sundus Sajid²

¹Department of Biotechnology, Mirpur University of Science and Technology (MUST), Mirpur, Pakistan.

Molecular genetics & genomic medicine

|September 13, 2025

概括

在基因分析中,在一个患有阿尔斯特罗姆综合征的家庭中发现了一种新的ALMS1基因变异. 在CNGA3和FYCO1基因中也发现了已知的变异,扩大了对遗传性眼睛疾病的理解.

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:

遗传性眼睛疾病导致显著的全球视力丧失,特别是在幼儿时期.
像巴基斯坦这样的欠发达地区缺乏基因诊断基础设施,导致许多病例无法解释.
阿尔斯特罗姆综合征 (AS) 是一种罕见的遗传疾病,其特点是视力丧失和其他症状.

研究的目的:

确定四个巴基斯坦家庭遗传视力丧失的遗传基础.
描述与不同眼睛疾病相关的新型和已知的遗传变异.
研究遗传性视网膜疾病中的基因型-表型相关性.

主要方法:

用同卵性映射和外体序列测序来检测引起的遗传变异.
使用定量逆转录酶-PCR (qRT-PCR) 来测量ALMS1mRNA水平.
分析包括患者,携带者父母和健康对照来评估变异的影响.

主要成果:

在一个患有阿尔斯特罗姆综合征的家庭中,在ALMS1基因中发现了一种新型的移删除 (c.5747_5750del).
在其他三个家族中发现了已知的CNGA3 (c.1315C>T) 和FYCO1 (c.2206C>T,c.3150+1G>T) 的变异.
与预测相反,ALMS1变种没有触发无意义介导的mRNA衰变 (NMD),这表明截断的蛋白质形成.

结论:

这项研究扩大了ALMS1已知的突变谱,为阿尔斯特罗姆综合征研究做出了贡献.
确定了FYCO1和CNGA3的已知变异,进一步了解它们在视力丧失中的作用.
突变的汇编有助于确定遗传性眼睛疾病的基因型-表型相关性.

关键词:

阿尔斯特罗姆综合征是什么意思亚克罗马托普西亚 (Achromatopsia) 是一种遗传性白内障是一种先天性白内障.有血缘关系的婚姻.胡说八道介导衰变的废话

更多相关视频

Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease

Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease

Published on: April 4, 2018

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

相关概念视频

Genetic Lingo

Genetic Lingo

Genome-wide Association Studies-GWAS

Genome-wide Association Studies-GWAS

Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...

Pleiotropy

Pleiotropy

Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...

Incomplete Dominance

Incomplete Dominance

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.

Pedigree Analysis

Pedigree Analysis