Protein species as diagnostic markers

Area of Science:

• Biochemistry
• Proteomics
• Clinical Chemistry

Background:

• Protein species perturbations are associated with various diseases.
• Hemoglobin (HbA1c) is a key diagnostic marker for diabetes, reflecting blood glucose levels.
• Current clinical diagnostics underutilize protein species as markers despite their potential.

Purpose of the Study:

• To review the biochemical characteristics of protein species relevant to disease.
• To explore pathophysiological mechanisms causing protein species modifications.
• To emphasize the importance of screening for protein species markers.

Main Methods:

• Review of biochemical and pathophysiological mechanisms.
• Highlighting techniques for investigating protein species markers in clinical research.

Main Results:

• Protein species can serve as valuable diagnostic markers mirroring pathophysiological events.
• Shifts in protein species levels are linked to disease states.
• Existing clinical proteomics often focuses on peptides, hindering discrimination between healthy and pathologic proteins.

Conclusions:

• The low success rate of FDA-approved protein markers may stem from a gene-centric, peptide-focused approach.
• Screening for disease markers at the protein species level is essential.
• This review provides an overview of relevant techniques for protein species analysis.