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Emerging Technologies in Mass Spectrometry-Based DNA Adductomics.

Jingshu Guo1, Robert J Turesky2

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DNA adductomics uses advanced mass spectrometry to detect DNA damage from environmental exposures. This emerging field helps assess human exposure and understand chemical risks in disease development.

Keywords:
CarcinogensDNA adductsadductomicsmass spectrometry

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Area of Science:

  • Environmental Health
  • Toxicology
  • Biochemistry

Background:

  • DNA adducts are molecular markers of DNA damage caused by genotoxicants.
  • Advances in mass spectrometry (MS) enable comprehensive analysis of DNA damage.
  • DNA adductomics offers a novel approach to study genome-wide damage.

Purpose of the Study:

  • To review the application of DNA adductomics in human exposure assessment.
  • To highlight the capabilities and limitations of various MS platforms in DNA adductomic analysis.
  • To discuss the potential of DNA adductomics in understanding chemical exposures and disease risk.

Main Methods:

  • Utilizing high-resolution mass spectrometry (MS) for sensitive detection of DNA adducts.
  • Employing tailored data-dependent and data-independent scanning techniques adapted from proteomics and metabolomics.
  • Analyzing the characteristic loss of 2'-deoxyribose from modified nucleosides during MS analysis.

Main Results:

  • DNA adductomics enables screening for the totality of DNA damage in the human genome.
  • Various MS platforms are applicable to DNA adductomic analysis, each with specific advantages and disadvantages.
  • The field is rapidly advancing with improvements in analytical technology and bioinformatics.

Conclusions:

  • DNA adductomics is a promising emerging technology for human exposure assessment.
  • Maturing analytical techniques and bioinformatics tools will enhance our understanding of chemical exposures and their role in DNA damage and disease.
  • This approach has the potential to significantly advance the field of environmental health and toxicology.