Small RNA sequencing of small extracellular vesicles secreted by umbilical cord mesenchymal stem cells following replicative senescenceSmall RNA sequencing of small extracellular vesicles secreted by umbilical cord mesenchymal stem cells following replicative senescence
- Other Titles
- Small RNA sequencing of small extracellular vesicles secreted by umbilical cord mesenchymal stem cells following replicative senescence
- Authors
- Kim, Chris Gunwoo; Lee, Jae Kyung; Cho, Geum-Joon; Shin, Ok Sarah; Gim, Jeong-An
- Issue Date
- Aug-2022
- Publisher
- 한국유전학회
- Keywords
- UCMSC; Senescence; Small extracellular vesicles; microRNA
- Citation
- Genes & Genomics, v.45, no.3, pp 347 - 358
- Pages
- 12
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- Genes & Genomics
- Volume
- 45
- Number
- 3
- Start Page
- 347
- End Page
- 358
- URI
- https://scholarworks.korea.ac.kr/kumedicine/handle/2021.sw.kumedicine/61353
- DOI
- 10.1007/s13258-022-01297-y
- ISSN
- 1976-9571
2092-9293
- Abstract
- Background
Umbilical cord mesenchymal stem cells (UCMSC) are subsets of multipotent stem cells involved in immune modulation, tissue regeneration, and antimicrobial defense. Cellular senescence is associated with the onset of aging-related diseases and small extracellular vesicles (sEVs) are important mediators of senescence and aging.
Objective
However, little is known about the role and function of microRNAs (miRNAs) carried by UCMSC-derived sEVs. To analyze the expression profiles of miRNAs secreted by senescent UCMSC, small RNA sequencing of the miRNAs within the sEVs was performed in this study.
Methods
UCMSC cultures underwent serial passaging beyond passage number 20 to achieve replicative senescence, which was confirmed by various methods, including increased senescence-associated β-gal staining and cytokine secretion levels. sEVs derived from non-senescent and senescent UCMSC were isolated and characterized by nanoparticle tracking analysis, transmission electron microscopy, and immunoblot analysis.
Results
Small RNA sequencing of the miRNAs within the sEVs revealed senescence-associated differences in the miRNA composition, as shown by the upregulation of miR-122-5p and miR-146a-5p, and downregulation of miR-125b-5p and miR-29-3p. In addition, total RNA sequencing analysis showed that PENK, ITGA8, and TSIX were upregulated, whereas AKR1B10, UNC13D, and IL21R were downregulated by replicative senescence in UCMSC. In sEVs, upregulated genes were linked to downregulated miRNAs, and vice versa. In the gene-concept network analysis, five gynecologic terms were retrieved.
Conclusions
The study provides an insight into the cellular characteristics of UCMSC following replicative senescence and emphasizes the importance of monitoring passage numbers of UCMSC for further therapeutic use.
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- 3. Graduate School > Biomedical Research Center > 1. Journal Articles
- 2. Clinical Science > Department of Obstetrics and Gynecology > 1. Journal Articles
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