Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 42, Pages 12935-12939Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201706570
Keywords
biohybrid micromotors; chemotaxis; drug delivery; mesoporous silica nanoparticles; neutrophils
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Funding
- National Natural Science Foundation of China [21674029, 21573053]
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Engineering self-propelled micromotors with good biocompatibility and biodegradability for actively seeking disease sites and targeted drug transport remains a huge challenge. In this study, neutrophils with intrinsic chemotaxis capability were transformed into self-guided hybrid micromotors by integrating mesoporous silica nanoparticles (MSNs) with high loading capability. To ensure the compatibility of neutrophil cells with drug-loaded MSNs, bacteria membranes derived from E.coli were coated on MSNs in advance by a camouflaging strategy. The resulting biohybrid micromotors inherited the characteristic chemotaxis capability of native neutrophils and could effectively move along the chemoattractant gradients produced by E.coli. Our studies suggest that this camouflaging approach, which favors the uptake of MSNs into neutrophils without loss of cellular activity and motility, could be used to construct synthetic nanoparticle-loaded biohybrid micromotors for advanced biomedical applications.
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