Current status and advances in quantitative proteomic mass spectrometry

Area of Science:

• Proteomics
• Biomedical Research
• Analytical Chemistry

Background:

• Accurate quantitation of proteins and peptides in complex biological systems remains a significant challenge in proteomics.
• Mass spectrometry-based approaches have advanced quantitative proteomics, enabling sensitive and multiplexed analysis of complex samples.

Purpose of the Study:

• To provide a critical overview of primary mass spectrometry-based quantitative approaches.
• To discuss the current status of quantitative proteomics in biomedical research.

Main Methods:

• Overview of label-free quantitation.
• Review of tagged quantitation methods.
• Discussion of stable isotope labeling techniques.

Main Results:

• Mass spectrometry enables accurate and sensitive protein quantitation.
• Bioinformatic tools are essential for multiplexing complex samples.
• Various quantitative strategies (label-free, tags, stable isotopes) have distinct advantages and limitations.

Conclusions:

• Continuous development of quantitative proteomics methods is vital for reproducibility.
• Quantitative proteomics plays a rapidly expanding role in biomarker discovery and validation.
• This review highlights the importance of mass spectrometry-based quantitation in advancing biomedical research.