Related Experiment Video
Updated: Aug 9, 2025

07:24
Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing
Published on: February 10, 2023
1.6K
Genomic Strategies in Mitochondrial Diagnostics.
Dasha Deen1, Charlotte L Alston1,2, Gavin Hudson3
1Wellcome Centre for Mitochondrial Research, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK.
Methods in Molecular Biology (Clifton, N.J.)
|February 22, 2023
Summary
Diagnosing mitochondrial diseases is complex due to genetic variations in nuclear and mitochondrial genes. This chapter explores advanced gene prioritization strategies using whole-exome sequencing (WES) to identify causative variants.
Area of Science:
- Genetics
- Molecular Biology
- Medical Genetics
Background:
- Mitochondrial diseases exhibit significant clinical and genetic heterogeneity.
- Over 300 nuclear genes are now associated with human mitochondrial diseases.
- Genetic diagnosis of mitochondrial disease remains a significant challenge.
Purpose of the Study:
- To describe current approaches for pinpointing causative variants in mitochondrial disease patients.
- To highlight recent advancements in gene/variant prioritization techniques.
- To focus on the application of whole-exome sequencing (WES) in this diagnostic process.
Main Methods:
- Review of gene and variant prioritization strategies.
- Application of whole-exome sequencing (WES) data analysis.
- Integration of genetic and clinical information for variant interpretation.
Main Results:
- Identification of numerous nuclear genes linked to mitochondrial diseases.
- Development of sophisticated methods for variant analysis.
- Improved ability to pinpoint causative variants through WES.
Conclusions:
- Gene and variant prioritization are crucial for diagnosing mitochondrial diseases.
- Whole-exome sequencing (WES) offers powerful tools for genetic diagnosis.
- Continued advancements in sequencing and analysis enhance diagnostic capabilities.
Related Concept Videos
Animal Mitochondrial Genetics
7.7K
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...
7.7K
Modern Molecular Taxonomy
69
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
69

