Proteomic Profiling of Extracellular Vesicles Allows for Human Breast Cancer Subtyping

Overview

Journal Commun Biol

Specialty Biology

Date 2019 Sep 12

PMID 31508500

Citations 113

Authors

Stamatia Rontogianni

Eleni Synadaki

Bohui Li

Marte C Liefaard

Esther H Lips

Jelle Wesseling

Wei Wu

Maarten Altelaar

Affiliations

Soon will be listed here.

Abstract

Extracellular vesicles (EVs) are a potential source of disease-associated biomarkers for diagnosis. In breast cancer, comprehensive analyses of EVs could yield robust and reliable subtype-specific biomarkers that are still critically needed to improve diagnostic routines and clinical outcome. Here, we show that proteome profiles of EVs secreted by different breast cancer cell lines are highly indicative of their respective molecular subtypes, even more so than the proteome changes within the cancer cells. Moreover, we detected molecular evidence for subtype-specific biological processes and molecular pathways, hyperphosphorylated receptors and kinases in connection with the disease, and compiled a set of protein signatures that closely reflect the associated clinical pathophysiology. These unique features revealed in our work, replicated in clinical material, collectively demonstrate the potential of secreted EVs to differentiate between breast cancer subtypes and show the prospect of their use as non-invasive liquid biopsies for diagnosis and management of breast cancer patients.

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