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MicroRNA Profiling of Blood Extracellular Vesicles in ME/CFS
María Ljungström1, Lubov Nathanson2, Elisa Oltra3
1Department of Pathology, School of Medicine, Catholic University of Valencia, Valencia, Spain.
Abstract:
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a chronic debilitating neuroimmune disease affecting many organs and systems which, in the absence of validated biomarkers, remains diagnosed by clinical criteria. Extracellular vesicles (EV) in blood come from practically all cells in our body and therefore may carry the disease-specific biomarkers needed for the diagnosis of ME. This chapter presents the methodology used on a single pilot study performed to evaluate this possibility to describe a workflow for EV isolation and the analysis of the miRNAs within, which could serve to interrogate additional cohorts of ME/CFS. Among the diverse nature of EV contents miRNAs may constitute a prominent regulatory layer in the development and progress of complex diseases such as ME/CFS, and therefore their study should be further pursued.
Insights
Researchers explored extracellular vesicles (EVs) and microRNAs (miRNAs) in blood for diagnosing Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). This pilot study outlines a method for EV isolation and miRNA analysis to find potential biomarkers for ME/CFS.
Area of Science:
- Neuroimmunology
- Biomarker Discovery
- Molecular Biology
Background:
- Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a complex neuroimmune disease diagnosed clinically due to a lack of validated biomarkers.
- Extracellular vesicles (EVs) in blood are derived from various cells and may contain disease-specific biomarkers.
- MicroRNAs (miRNAs) within EVs play regulatory roles and could be crucial in understanding complex diseases like ME/CFS.
Purpose of the Study:
- To present a methodology for isolating EVs from blood.
- To describe the analysis of miRNAs within these EVs.
- To establish a workflow for potential ME/CFS biomarker discovery.
Main Methods:
- Pilot study focused on EV isolation from blood samples.
- Analysis of miRNA content within the isolated EVs.
- Development of a workflow applicable to larger ME/CFS cohorts.
Main Results:
- A methodology for EV isolation and miRNA analysis was established.
- The study provides a foundation for further investigation into EV-miRNAs as ME/CFS biomarkers.
- This workflow can be applied to interrogate additional patient cohorts.
Conclusions:
- EV-derived miRNAs represent a promising area for ME/CFS biomarker research.
- The presented methodology facilitates the exploration of miRNAs in ME/CFS.
- Further studies are warranted to validate these findings in larger cohorts.
