Proteomics – The Functional Blueprint of Cells

Proteomics is the comprehensive study of all proteins expressed in a cell, tissue, or organism at a given time. Unlike the stable genome, the proteome is highly dynamic and responsive to environmental cues, disease states, and therapeutic interventions.

It encompasses two main approaches:

🔍 Qualitative: Which proteins are present? (e.g., detecting EGFR and p53 in cancer)

📊 Quantitative: How abundant are they? (e.g., healthy vs. diseased, or pre- vs. post-treatment comparisons)

⚙️ Core Technology: Mass spectrometry (LC–MS/MS) – converting proteins into peptides for identification and quantification.

🎯 Proteomics bridges genomics and cellular function, playing a pivotal role in biomarker discovery, early diagnosis, and personalized medicine.
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