| Literature DB >> 29889312 |
Byeong Hwa Yun1, Jingshu Guo1, Medjda Bellamri1, Robert J Turesky1.
Abstract
Hazardous chemicals in the environment and diet or their electrophilic metabolites can form adducts with genomic DNA, which can lead to mutations and the initiation of cancer. In addition, reactive intermediates can be generated in the body through oxidative stress and damage the genome. The identification and measurement of DNA adducts are required for understanding exposure and the causal role of a genotoxic chemical in cancer risk. Over the past three decades, 32 P-postlabeling, immunoassays, gas chromatography/mass spectrometry, and liquid chromatography/mass spectrometry (LC/MS) methods have been established to assess exposures to chemicals through measurements of DNA adducts. It is now possible to measure some DNA adducts in human biopsy samples, by LC/MS, with as little as several milligrams of tissue. In this review article, we highlight the formation and biological effects of DNA adducts, and highlight our advances in human biomonitoring by mass spectrometric analysis of formalin-fixed paraffin-embedded tissues, untapped biospecimens for carcinogen DNA adduct biomarker research.Entities:
Keywords: DNA adduct; biomarker; biomonitoring; carcinogen; mass spectrometry
Mesh:
Substances:
Year: 2018 PMID: 29889312 PMCID: PMC6289887 DOI: 10.1002/mas.21570
Source DB: PubMed Journal: Mass Spectrom Rev ISSN: 0277-7037 Impact factor: 10.946