Isolation and Characterization of Extracellular Vesicle from Mesenchymal Stem Cells of the Epidural Fat of the Spine

Sung Soo-Eun; Seo Min-Soo; Kang Kyung-Ku; Choi Joo-Hee; Lee Si-Joon; Lim Ju-Hyeon; Yang Seung Yun; Kim Seul-Ki; Lee Gun Woo

doi:10.31616/asj.2021.0129

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자료유형: 학술저널

저자정보: Sung Soo-Eun (Daegu-Gyeongbuk Medical Innovation Foundation Daegu Korea) Seo Min-Soo (Daegu-Gyeongbuk Medical Innovation Foundation Daegu Korea) Kang Kyung-Ku (Daegu-Gyeongbuk Medical Innovation Foundation Daegu Korea) Choi Joo-Hee (Daegu-Gyeongbuk Medical Innovation Foundation Daegu Korea) Lee Si-Joon (Daegu-Gyeongbuk Medical Innovation Foundation Daegu Korea) Lim Ju-Hyeon (Osong Medical Innovation Foundation Cheonju Korea) Yang Seung Yun (Pusan National University Pusan Korea) Kim Seul-Ki (Food Science R&D Center KolmarBNH Co. Ltd. Seoul Korea) Lee Gun Woo (Yeungnam University College of Medicine Daegu Korea)

저널정보: 대한척추외과학회 Asian Spine Journal Asian Spine Journal Vol.16 No.2

발행연도: 2022.4

수록면: 153 - 161 (9page)

DOI: 10.31616/asj.2021.0129

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Study Design: An experimental study with extracellular vesicles (EVs) from mesenchymal stem cell (MSC) of the epidural fat (EF) of the spine. Purpose: This study aims to isolate the exosomes from epidural fat-derived mesenchymal stem cells (EF-MSCs) and fully characterize the EF-MSC-EVs. Overview of Literature: EF-MSCs were reported in 2019, and a few studies have shown the positive outcomes of using EF-MSCs to treat specific spine pathologies. However, MSCs have significant limitations for conducting basic studies or developing therapeutic agents. Although EVs are an emerging research topic, no studies have focused on EVs, especially exosomes, from EF and EF-MSCs. Methods: In this study, we isolated the exosomes using the tangential flow filtration (TFF) system with exosome-depleted fetal bovine serum and performed the characterization tests via western blotting, reverse transcription?polymerase chain reaction, nanoparticle tracking analysis (NTA), and transmission electron microscopy. Results: In transmission electron microscopy, the exosome had a diameter of approximately 100?200 nm and had a spherical shape, whereas in the NTA, the exosome had an average diameter of 142.8 nm with a concentration of 1.27×1010 particles/mL. The flow cytometry analysis showed the expression of CD63 and CD81. The western blotting analysis showed the positive markers. Conclusions: These findings showed that isolating the exosomes via TFF resulted in high-quality EF-MSC exosome yield. Further studies with exosomes from EF-MSC are needed to evaluate the function and role of the EF tissue.

#Epidural fat #Mesenchymal stem cells #Extracellular vesicles #Exosomes #Isolation

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