What question did this study set out to answer?

The study aims to identify specific proteins in extracellular vesicles that can act as biomarkers for early detection of colon adenocarcinoma.

April 16, 2026Open Access

Proteomic Profiling of Human Extracellular Vesicles Reveals Diagnostic Biomarkers for Colon Adenocarcinoma

Key Points

The study aims to identify specific proteins in extracellular vesicles that can act as biomarkers for early detection of colon adenocarcinoma.
Profiled extracellular vesicle proteome from 233 human patients with colon adenocarcinoma.
Analyzed matched pairs of tumor and non-tumor colon tissues and pre/post-operative plasma samples.
Utilized liquid chromatography-tandem mass spectrometry (LC-MS/MS) for proteomic analysis.
Identified 745 proteins enriched in tumor-derived extracellular vesicles.
Developed a 10-protein panel that distinguishes colon adenocarcinoma patients from healthy controls with over 90% sensitivity.
Observed significant decrease in tumor-associated proteins post-surgery, while healthy-associated proteins normalized.

Abstract

Early detection of colon adenocarcinoma (COAD) remains suboptimal. Fecal tests fail to diagnose 30% of stage I cancer, and serum CEA lacks sensitivity ( 90% sensitivity for differentiating COAD from healthy and non-COAD colorectal conditions. Six weeks after curative resection, tumor-associated EV proteins decreased by > 70%, whereas healthy-associated proteins rebounded to baseline, indicating surgical responsiveness. Collectively, EV protein signatures provide a sensitive and tissue-specific window into tumor-host communication, further supporting blood-based early detection of COAD.

Proteomic Profiling of Human Extracellular Vesicles Reveals Diagnostic Biomarkers for Colon Adenocarcinoma

Key Points

Abstract

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