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Updated: Feb 10, 2026
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Purification and microRNA Profiling of Exosomes Derived from Blood and Culture Media
Published on: June 14, 2013
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Identifying Exosome-Derived MicroRNAs as Candidate Biomarkers of Frailty
B R Ipson1, M B Fletcher, S E Espinoza
1Alfred L. Fisher, GRECC-182, Audie L. Murphy VA Hospital, 7400 Merton Minter Blvd., San Antonio, TX 78229, USA; Phone: 210-617-5197, Fax: 210-617-5312,
The Journal of Frailty & Aging
|May 10, 2018
Summary
Researchers identified eight microRNAs (miRNAs) in exosomes linked to frailty, a geriatric syndrome. These novel biomarkers may offer insights into the biological mechanisms of aging and frailty.
Area of Science:
- Gerontology
- Molecular Biology
- Biomarker Discovery
Background:
- Frailty is a geriatric syndrome with significant health risks, including falls, disability, and mortality.
- Current understanding of frailty's biological mechanisms is limited, with no established molecular biomarkers for diagnosis or prognosis.
Purpose of the Study:
- To identify novel molecular biomarkers for frailty.
- To explore potential biological mechanisms underlying frailty using exosome-derived microRNAs.
Main Methods:
- Profiling of exosome-derived microRNAs from plasma of young, robust older, and frail older individuals.
- Identification of differentially expressed miRNAs using bioinformatics.
- KEGG pathway analysis of target genes for identified miRNAs.
Main Results:
- Eight specific microRNAs (miR-10a-3p, miR-92a-3p, miR-185-3p, miR-194-5p, miR-326, miR-532-5p, miR-576-5p, and miR-760) were uniquely enriched in frail individuals.
- KEGG analysis indicated that target genes of these miRNAs are involved in aging and age-related pathways.
Conclusions:
- The study identified eight candidate exosomal microRNAs as potential biomarkers for frailty.
- These findings may contribute to understanding the pathogenesis of frailty and developing diagnostic/prognostic tools.
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