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- W4310999327 abstract "Abstract Hematopoietic stem and progenitor cells (HSPCs) are desirable targets for gene therapy but are notoriously difficult to target and transfect. Existing viral vector‐based delivery methods are not effective in HSPCs due to their cytotoxicity, limited HSPC uptake and lack of target specificity (tropism). Poly(lactic‐ co ‐glycolic acid) (PLGA) nanoparticles (NPs) are attractive, nontoxic carriers that can encapsulate various cargo and enable its controlled release. To engineer PLGA NP tropism for HSPCs, megakaryocyte (Mk) membranes, which possess HSPC‐targeting moieties, were extracted and wrapped around PLGA NPs, producing MkNPs. In vitro, fluorophore‐labeled MkNPs are internalized by HSPCs within 24 h and were selectively taken up by HSPCs versus other physiologically related cell types. Using membranes from megakaryoblastic CHRF‐288 cells containing the same HSPC‐targeting moieties as Mks, CHRF‐wrapped NPs (CHNPs) loaded with small interfering RNA facilitated efficient RNA interference upon delivery to HSPCs in vitro. HSPC targeting was conserved in vivo, as poly(ethylene glycol)–PLGA NPs wrapped in CHRF membranes specifically targeted and were taken up by murine bone marrow HSPCs following intravenous administration. These findings suggest that MkNPs and CHNPs are effective and promising vehicles for targeted cargo delivery to HSPCs." @default.
- W4310999327 created "2022-12-22" @default.
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- W4310999327 date "2022-11-29" @default.
- W4310999327 modified "2023-10-15" @default.
- W4310999327 title "Megakaryocyte membrane‐wrapped nanoparticles for targeted cargo delivery to hematopoietic stem and progenitor cells" @default.
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- W4310999327 doi "https://doi.org/10.1002/btm2.10456" @default.
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