Circulating microRNAs: emerging biomarkers for diagnosis and prognosis in patients with gastrointestinal cancers

Author:

Lindner Kirsten1,Haier Joerg2,Wang Zhe3,Watson David I.3,Hussey Damian J.3,Hummel Richard1

Affiliation:

1. Department of General and Visceral Surgery, Muenster University Hospital, Muenster, Germany

2. Comprehensive Cancer Centre, University of Muenster, 48149 Muenster, Germany

3. Flinders University Department of Surgery, Flinders Medical Centre, Bedford Park, SA 5042, Australia

Abstract

To identify novel non-invasive biomarkers for improved detection, risk assessment and prognostic evaluation of cancer, expression profiles of circulating microRNAs are currently under evaluation. Circulating microRNAs are highly promising candidates in this context, as they present some key characteristics for cancer biomarkers: they are tissue-specific with reproducible expression and consistency among individuals from the same species, they are potentially derived directly from the tumour and therefore might correlate with tumour progression and recurrence, and they are bound to proteins or contained in subcellular particles, such as microvesicles or exosomes, making them highly stable and resistant to degradation. The present review highlights the origin of circulating microRNAs, their stability in blood samples, and techniques to isolate exosomal microRNAs, and then addresses the current evidence supporting potential clinical applications of circulating miRNAs for diagnostic and prognostic purposes.

Publisher

Portland Press Ltd.

Subject

General Medicine

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