Related Experiment Video
Updated: Jan 29, 2026
08:03
Isolation of microRNAs from Tick Ex Vivo Salivary Gland Cultures and Extracellular Vesicles
Published on: April 6, 2022
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RNA transcripts in salivary extracellular vesicle cargo isolated from aged populations
Sicheng Wen1, Chang Yu2, Maxfield M G Kelsey3
1Department of Medicine, Division of Hematology/Oncology, Rhode Island Hospital, Brown University, Providence, RI, United States.
Frontiers in Aging
|January 28, 2026
Summary
Saliva extracellular vesicles (EVs) contain RNA transcripts linked to neurodegenerative diseases. This finding suggests saliva may serve as a non-invasive screening tool for early detection of these conditions.
Area of Science:
- Molecular Biology
- Genomics
- Neuroscience
Background:
- Human saliva contains DNA, RNA, and proteins within extracellular vesicles (EVs).
- EV contents reflect the cell of origin, offering insights into cellular health.
- Investigating salivary EVs (salEVs) may reveal biomarkers for neurodegenerative conditions.
Purpose of the Study:
- To analyze the RNA cargo of salEVs.
- To identify transcripts associated with neurodegenerative diseases in salEVs.
Main Methods:
- RNA sequencing (RNA-seq) and NanoString miRNA analysis were performed on salEVs.
- Samples were isolated from individuals over 65 with normal cognition.
Main Results:
- salEV RNA included protein-coding RNA, long non-coding RNA (lncRNA), retrotransposons, and miRNAs.
- Protein-coding transcripts were enriched in neurodegenerative pathways.
- salEVs showed greater representation of neurodegenerative pathway transcripts compared to blood EVs.
Conclusions:
- salEVs harbor RNA transcripts linked to neurodegenerative pathways.
- Saliva may be a viable source for screening neurodegenerative disease biomarkers.
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