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Updated: Apr 25, 2026
Isolating, Sequencing and Analyzing Extracellular MicroRNAs from Human Mesenchymal Stem Cells
Published on: March 8, 2019
Identification of a reliable reference microRNA for MSCs and sEV across varied preconditioning strategies
Yashvi Sharma1, Sonali Rawat1, Sujata Mohanty1
1Stem Cell Facility- DBT Centre of Excellence for Stem Cell Research, All India Institute of Medical Sciences, New Delhi 110029, India.
Abstract:
Mesenchymal stem cells-derived small extracellular vesicles (MSC-sEV) are emerging as promising tools in regenerative medicine due to their ability to recapitulate the therapeutic effects of parent cells via their biomolecular cargo, particularly microRNAs (miRNAs). Accurate profiling of miRNAs in sEV is essential for understanding their functionality and potential clinical applications, yet this requires stable reference miRNAs for reliable normalization across experimental conditions. In this study, we systematically evaluated the expression stability of three commonly used housekeeping miRNAs-miR-16a-5p, miR-103a-5p, and U6 snRNA-in both bone marrow (BM-MSCs) and Wharton's jelly (WJ-MSCs) derived MSCs and their respective sEV under various preconditioning strategies, including normoxia, hypoxia, dexamethasone treatment, and combinations thereof. Our analysis revealed that miRNA expression varied significantly with tissue origin and priming conditions, both at the cellular and vesicular level. While miR-103 exhibited stability in BM-MSCs, its expression was inconsistent in WJ-MSCs, limiting its utility as a universal reference. U6 snRNA demonstrated the most consistent expression across MSC types and conditions, making it a suitable candidate for normalization. miR-16 also emerged as a stable reference under chemically primed conditions. This study provides a comprehensive framework for selecting reference miRNAs in MSC-sEV research, thereby supporting reproducibility and standardization in the quantification of functional miRNAs and contributing to the development of effective sEV-based regenerative therapies.
Insights
This study identifies stable reference microRNAs (miRNAs) for quantifying mesenchymal stem cells-derived small extracellular vesicles (MSC-sEV). U6 snRNA is recommended for normalizing miRNA expression in MSC-sEV research across diverse conditions.
Area of Science:
- Biotechnology
- Regenerative Medicine
- Molecular Biology
Background:
- Mesenchymal stem cells-derived small extracellular vesicles (MSC-sEV) hold therapeutic potential in regenerative medicine.
- MicroRNAs (miRNAs) within MSC-sEV mediate their therapeutic effects.
- Reliable normalization is crucial for accurate miRNA profiling in MSC-sEV.
Purpose of the Study:
- To systematically evaluate the expression stability of commonly used housekeeping miRNAs (miR-16a-5p, miR-103a-5p, U6 snRNA) in MSCs and their sEV.
- To determine the suitability of these miRNAs as reference genes under various preconditioning strategies.
- To provide a framework for selecting stable reference miRNAs for MSC-sEV research.
Main Methods:
- Evaluation of miRNA expression stability in bone marrow (BM-MSCs) and Wharton's jelly (WJ-MSCs) derived MSCs and their sEV.
- Testing under normoxia, hypoxia, and dexamethasone treatment conditions.
- Statistical analysis of expression variations based on tissue origin and priming.
Main Results:
- MiRNA expression varied significantly with MSC tissue origin and preconditioning.
- miR-103a-5p stability was inconsistent between BM-MSCs and WJ-MSCs.
- U6 snRNA demonstrated the most consistent expression across all tested conditions, making it a suitable reference.
- miR-16a-5p showed stability under chemically primed conditions.
Conclusions:
- U6 snRNA is a reliable reference miRNA for normalization in MSC-sEV studies across diverse experimental conditions.
- miR-16a-5p can serve as a stable reference under specific chemical priming.
- This study supports standardization and reproducibility in MSC-sEV miRNA quantification for regenerative therapies.
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