Related Experiment Video
Updated: Jul 10, 2026

07:49
Transmitochondrial Cybrid Generation Using Cancer Cell Lines
Published on: March 17, 2023
[Mitochondrial DNA mutations and related human diseases]
Gang Chen1, Wei-Dong Du, Hui-Min Cao
1Key Lab of Gene Resource Utilization for Severe Hereditary Diseases of Ministry of Education, Hefei 230032, China.
Yi Chuan = Hereditas
|November 9, 2007
Summary
Mitochondrial DNA (mtDNA) mutations are linked to numerous human diseases. This review covers mtDNA genetics, inherited diseases, aging, cancer, and treatment strategies for mtDNA disorders.
Area of Science:
- Genetics
- Molecular Biology
- Human Pathology
Context:
- Mitochondrial DNA (mtDNA) mutations have emerged as significant factors in human disease over the last 20 years.
- These mutations contribute to a spectrum of conditions, from single-organ disorders to complex multi-system diseases.
Purpose:
- To review the multifaceted relationship between mitochondrial DNA mutations and human diseases.
- To highlight key aspects including mitochondrial genetics, inherited mtDNA disorders, somatic mutations in aging and cancer, and therapeutic approaches.
Summary:
- Mitochondrial genetics and the characteristics of mtDNA mutations are discussed.
- The review examines the role of inherited and somatic mtDNA mutations in various human diseases, including aging and tumorigenesis.
- Current diagnostic and treatment strategies for mitochondrial DNA diseases are explored.
Impact:
- Provides a comprehensive overview of mtDNA mutations in human health and disease.
- Enhances understanding of the genetic basis for a wide range of pathologies.
- Informs future research directions and clinical management of mitochondrial disorders.
More Related Videos
Related Concept Videos
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...
Mutations
Overview
Mutations
Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
Mutations
Overview
Mitochondria
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
Spontaneous and Induced Mutations
Spontaneous mutations arise infrequently during DNA replication due to errors in the process. A key factor behind these errors is tautomeric shifts in nitrogenous bases, where bases transition from keto to enol forms or amino to imino forms. This shift can alter base-pairing rules, leading to mutations. Additionally, reactive oxygen species (ROS) arising from aerobic metabolism can damage DNA, resulting in depurination (loss of a purine base) or depyrimidination (loss of a pyrimidine base).

