Improvement of stem cell-derived exosome release efficiency by surface-modified nanoparticles

Autor: Dong Jun Park, Wan Su Yun, Woo Cheol Kim, Jeong-Eun Park, Su Hoon Lee, Sunmok Ha, Jin Sil Choi, Jaehong Key, Young Joon Seo
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Journal of Nanobiotechnology, Vol 18, Iss 1, Pp 1-17 (2020)
Druh dokumentu: article
ISSN: 1477-3155
68052898
DOI: 10.1186/s12951-020-00739-7
Popis: Abstract Background Mesenchymal stem cells (MSCs) are pluripotent stromal cells that release extracellular vesicles (EVs). EVs contain various growth factors and antioxidants that can positively affect the surrounding cells. Nanoscale MSC-derived EVs, such as exosomes, have been developed as bio-stable nano-type materials. However, some issues, such as low yield and difficulty in quantification, limit their use. We hypothesized that enhancing exosome production using nanoparticles would stimulate the release of intracellular molecules. Results The aim of this study was to elucidate the molecular mechanisms of exosome generation by comparing the internalization of surface-modified, positively charged nanoparticles and exosome generation from MSCs. We determined that Rab7, a late endosome and auto-phagosome marker, was increased upon exosome expression and was associated with autophagosome formation. Conclusions It was concluded that the nanoparticles we developed were transported to the lysosome by clathrin-mediated endocytosis. additionally, entered nanoparticles stimulated that autophagy related factors to release exosome from the MSC. MSC-derived exosomes using nanoparticles may increase exosome yield and enable the discovery of nanoparticle-induced genetic factors.
Databáze: Directory of Open Access Journals
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