Quo vadis blood protein adductomics?

Area of Science:

• Environmental Health
• Toxicology
• Biochemistry

Background:

• Chemical exposure is routinely monitored in various environmental and occupational settings.
• Biomonitoring of chemicals in biological fluids helps determine individual exposure levels.
• Blood protein adducts serve as crucial biomarkers for both xenobiotic exposure and biologically effective dose.

Purpose of the Study:

• To review the utility of blood protein adducts as biomarkers for chemical exposure.
• To discuss advancements in analytical methods, including proteomic techniques, for adduct detection.
• To identify current limitations and future directions for improving biomonitoring sensitivity.

Main Methods:

• Analysis of chemical exposure through biomonitoring of biological fluids.
• Quantification of xenobiotic adducts on blood proteins, including hemoglobin.
• Application of proteomic techniques for the analysis of larger adducted peptides.

Main Results:

• Stable hemoglobin adducts provide exposure markers for up to 120 days.
• Proteomic approaches enable the analysis of larger adducted peptides.
• Current methods using larger peptides have detection limits inferior to those for single amino acid or cleaved adducts.

Conclusions:

• Blood protein adducts are valuable markers for assessing chemical exposure and internal dose.
• Proteomic advancements offer new avenues for adduct analysis, but sensitivity needs improvement.
• Further development of analytical methodologies is essential for enhanced biomonitoring capabilities.