| Autor: |
Tianwei Huang, Yuya Sato, Akiko Kuramochi, Yoshio Ohba, Masayuki Sano, Makoto Miyagishi, Hiroaki Tateno, Renu Wadhwa, Kazunori Kawasaki, Takeyuki Uchida, Kristina N. Ekdahl, Bo Nilsson, Ung-il Chung, Yuji Teramura |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Regenerative Therapy, Vol 22, Iss , Pp 90-98 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2352-3204 |
| DOI: |
10.1016/j.reth.2022.12.007 |
| Popis: |
Exosomes (diameter 30–200 nm) are a subtype of extracellular vesicles secreted by cells containing DNA, microRNA (miRNA), and proteins. Exosomes are expected to be valuable as a means of delivering drugs or functional miRNAs in treatment of diseases. However, the delivery of exosomes is not sufficiently effective, even though exosomes have intrinsic delivery functions. Cell-penetrating peptides (CPPs) are short peptide families that facilitate cellular intake of molecules and vesicles. We previously reported that the modification of cells, and liposomes with CPP-conjugated-lipids, CPPs conjugated with poly (ethylene glycol)-conjugated phospholipids (PEG-lipid), that induce adhesion by CPPs, can be useful for cell-based assays and harvesting liposomes. In this study, we aimed to modulate the exosome surface using Tat peptide (YGRKKRRQRRR)-PEG-lipids to improve intracellular delivery to endothelial cells. We isolated and characterized exosomes from the medium of HEK 293 T cell cultures. Tat conjugated PEG-lipids with different spacer molecular weights and lipid types were incorporated into exosomes using fluorescein isothiocyanate labeling to optimize the number of Tat-PEG-lipids immobilized on the exosome surface. The exosomes modified with Tat-PEG-lipids were incubated with human umbilical vein endothelial cells (HUVECs) to study the interaction. Tat conjugated with 5 kDa PEG and C16 lipids incorporated on the exosome surface were highly detected inside HUVECs by flow cytometry. Fluorescence was negligible in HUVECs for control groups. Thus, Tat-PEG-lipids can be modified on the exosome surface, improving the intracellular delivery of exosomes. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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