Related Experiment Video
Updated: May 27, 2026
The Lambda Select cII Mutation Detection System
Published on: April 26, 2018
Somatic mtDNA mutations in lung tissues of pesticide-exposed fruit growers
Cheng-Ye Wang1, Zhong-Bao Zhao
1Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming 650224, China.
Abstract:
Some pesticides have been considered potential chemical mutagens and their widespread use involves the assessment of their potentially hazardous effects. The mitochondrial genome is especially prone to DNA damage and thus can serve as a biomarker to monitor the genotoxicity of pesticides to human DNA. We performed a screening for somatic mutations in lung tissues from pesticide-exposed fruit growers, by direct comparing the entire mtDNA sequences of the lung tissue and the matched peripheral blood from the same individual. A phylogenetic approach and a high standard procedure were utilized to avoid potential errors in data generation and analysis. We observed a significantly increased frequency of mtDNA somatic mutations in lung tissues which had been exposed to pesticides multiple times by inhalation, and the potential biological significance of these mutations was further discussed. The samples represented in this observational study, which has multiple exposures to pesticides, experience a significant greater incidence of mtDNA mutations, suggesting that multiple exposures to pesticides could damage human mtDNA and cause somatic mutations.
Insights
Pesticide exposure may damage human DNA. This study found increased mitochondrial DNA (mtDNA) mutations in lung tissue of fruit growers with multiple pesticide exposures, suggesting mtDNA as a biomarker for genotoxicity.
Area of Science:
- Environmental Health
- Toxicology
- Genetics
Background:
- Pesticides are widely used, raising concerns about their mutagenic potential.
- The mitochondrial genome (mtDNA) is susceptible to DNA damage and can indicate genotoxicity.
Purpose of the Study:
- To assess the genotoxic effects of pesticide exposure on human DNA.
- To investigate the frequency of somatic mutations in mitochondrial DNA (mtDNA) in pesticide-exposed individuals.
Main Methods:
- Compared entire mtDNA sequences from lung tissue and peripheral blood of fruit growers with documented pesticide exposure.
- Employed a phylogenetic approach and rigorous procedures to ensure data accuracy.
- Screened for somatic mutations in lung tissues after multiple pesticide exposures via inhalation.
Main Results:
- A significantly higher frequency of mtDNA somatic mutations was observed in lung tissues compared to peripheral blood.
- Multiple pesticide exposures through inhalation were associated with a greater incidence of mtDNA mutations.
Conclusions:
- Multiple exposures to pesticides can damage human mitochondrial DNA, leading to somatic mutations.
- Mitochondrial DNA mutations may serve as a biomarker for monitoring pesticide genotoxicity in humans.
More Related Videos
Related Concept Videos
01:30Spontaneous and Induced Mutations
01:39Mutations
01:35Mutations
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
01:20Mismatch Repair
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...
01:36Mismatch Repair
01:25Mutagenicity and Carcinogenicity