Targeted proteomics strategy applied to biomarker evaluation.

Area of Science:

• Biochemistry
• Analytical Chemistry
• Biomarker Discovery

Background:

• Biomarker validation pipelines are hindered by the challenge of quantitatively measuring numerous protein candidates in biological samples.
• Current methods like immunoassays lack the high-throughput and multiplexing capabilities needed for efficient candidate evaluation.
• Developing robust and selective analytical techniques is crucial for analyzing complex clinical matrices.

Purpose of the Study:

• To discuss the design and performance of biomarker evaluation studies utilizing targeted proteomics strategies.
• To highlight the implementation of recent technological advancements in quantitative proteomics.
• To address the need for high-throughput, sensitive, and selective methods in early-stage biomarker discovery.

Main Methods:

• Utilizing mass spectrometry (MS)-based targeted proteomic strategies for protein quantification.
• Employing high-resolution and high-accuracy mass analyzers for enhanced selectivity.
• Implementing parallel reaction monitoring (PRM) for precise quantitative analysis.

Main Results:

• Targeted proteomics provides a sensitive, precise, versatile, systematic, and scalable quantification tool.
• The multiplexing capability allows for cost-effective and rapid evaluation of hundreds of targets.
• High-resolution MS and PRM improve selectivity for analyzing complex clinical samples.

Conclusions:

• Targeted proteomics is a powerful approach for efficiently triaging large lists of biomarker candidates.
• Advancements in MS technology significantly enhance the robustness and selectivity of quantitative methods.
• This strategy accelerates the biomarker validation process, particularly in early discovery phases.