CD63-snorkel tagging for isolation of exosomes
Exosomes (Exo) are important mediators of inter-cellular communications; however, no effective method is available for isolating, thus characterizing, cellular-specific exosomes in vivo. Since CD63 is a reliable marker for exosomes, we have developed a tagging strategy, term “CD63-Snorkel (CD63-SNKL...
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| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
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| Series: | Extracellular Vesicle |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2773041723000100 |
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| Summary: | Exosomes (Exo) are important mediators of inter-cellular communications; however, no effective method is available for isolating, thus characterizing, cellular-specific exosomes in vivo. Since CD63 is a reliable marker for exosomes, we have developed a tagging strategy, term “CD63-Snorkel (CD63-SNKL)”, in which CD63 at its intracellular C-terminus was fused to a fragment of PDGFRB that contains the transmembrane domain tethered to multiple epitope tags (HA, His, and FLAG) displayed in tandem on surface. We found that the CD63-SNKL protein has similar subcellular localizations as endogenous CD63 and can be effectively sorted into Exo. Furthermore, Exo secreted from CD63-SNKL–transduced cells can be effectively captured on anti-HA magnetic beads and eluted with HA peptides. Thus, CD63-SNKL may be engineered for isolating and tracking endogenous tissue-specific Exo in vivo. |
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| ISSN: | 2773-0417 |