TY - JOUR U1 - Wissenschaftlicher Artikel A1 - Kiefer, Ruth A1 - Jurisic, Marijas A1 - Dahlem, Charlotte A1 - Koch, Marcus A1 - Schmitt, Manfred J. A1 - Kiemer, Alexandra K. A1 - Schneider, Marc A1 - Breinig, Frank T1 - Targeted delivery of functionalized PLGA nanoparticles to macrophages by complexation with the yeast Saccharomyces cerevisiae JF - Biotechnology and Bioengineering N2 - Abstract Nanoparticles (NPs) are able to deliver a variety of substances into eukaryotic cells. However, their usage is often hampered by a lack of specificity, leading to the undesired uptake of NPs by virtually all cell types. In contrast to this, yeast is known to be specifically taken up into immune cells after entering the body. Therefore, we investigated the interaction of biodegradable surface-modified poly (lactic-co-glycolic acid) (PLGA) particles with yeast cells to overcome the unspecificity of the particulate carriers. Cells of different Saccharomyces cerevisiae strains were characterized regarding their interaction with PLGA-NPs under isotonic and hypotonic conditions. The particles were shown to efficiently interact with yeast cells leading to stable NP/yeast-complexes allowing to associate or even internalize compounds. Notably, applying those complexes to a co-culture model of HeLa cells and macrophages, the macrophages were specifically targeted. This novel nano-in-micro carrier system suggests itself as a promising tool for the delivery of biologically active agents into phagocytic cells combining specificity and efficiency. This article is protected by copyright. All rights reserved. Y1 - 2020 UN - https://nbn-resolving.org/urn:nbn:de:bsz:291:415-3820 SN - 0006-3592 SS - 0006-3592 U6 - https://doi.org/10.1002/bit.27226 DO - https://doi.org/10.1002/bit.27226 VL - 117 IS - 3 SP - 776 EP - 788 ER -