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Yang, Wen; Frickenstein, Alex N.; Sheth, Vinit; Holden, Alyssa; Mettenbrink, Evan M.; Wang, Lin; Woodward, Alexis A.; Joo, Bryan S.; Butterfield, Sarah K.; Donahue, Nathan D.; Green, Dixy E.; Thomas, Abigail G.; Harcourt, Tekena; Young, Hamilton; Tang, Mulan; Malik, Zain A.; Harrison, Roger G.; Mukherjee, Priyabrata; DeAngelis, Paul L.; Wilhelm, Stefan
Nano letters, 09/2022, Letnik: 22, Številka: 17Journal Article
We used heparosan (HEP) polysaccharides for controlling nanoparticle delivery to innate immune cells. Our results show that HEP-coated nanoparticles were endocytosed in a time-dependent manner by innate immune cells via both clathrin-mediated and macropinocytosis pathways. Upon endocytosis, we observed HEP-coated nanoparticles in intracellular vesicles and the cytoplasm, demonstrating the potential for nanoparticle escape from intracellular vesicles. Competition with other glycosaminoglycan types inhibited the endocytosis of HEP-coated nanoparticles only partially. We further found that nanoparticle uptake into innate immune cells can be controlled by more than 3 orders of magnitude via systematically varying the HEP surface density. Our results suggest a substantial potential for HEP-coated nanoparticles to target innate immune cells for efficient intracellular delivery, including into the cytoplasm. This HEP nanoparticle surface engineering technology may be broadly used to develop efficient nanoscale devices for drug and gene delivery as well as possibly for gene editing and immuno-engineering applications.
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in: SICRIS
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