PMID- 37598888 OWN - NLM STAT- Publisher LR - 20231012 IS - 1873-4995 (Electronic) IS - 0168-3659 (Linking) VI - 362 DP - 2023 Oct TI - Impact of interferon-gamma on the target cell tropism of nanoparticles. PG - 325-341 LID - S0168-3659(23)00534-5 [pii] LID - 10.1016/j.jconrel.2023.08.034 [doi] AB - Interferon-gamma (IFN-gamma) is well known to reduce the infectivity of viral pathogens by altering their tissue tropism. This effect is induced by upregulation of cholesterol 25-hydroxylase (CH25H). Given the similarity of viral pathogens and ligand-functionalized nanoparticles in the underlying strategy of receptor-mediated cell recognition, it appears conceivable that IFN-gamma exceeds similar effects on nanoparticles. Concretely, IFN-gamma-induced activation of CH25H could decrease nanoparticle avidity for target cells via depletion of clathrin-coated pits. We hypothesized that this effect would cause deterioration of target-cell specific accumulation of nanoparticles. To prove our hypothesis, we investigated the cell tropism of angiotensin II functionalized nanoparticles (NP(Lys-Ang II)) in a co-culture system of angiotensin II subtype 1 receptor (AT(1)R) positive rat mesangial target cells (rMCs) and AT(1)R-negative HeLa off-target cells. In the presence of IFN-gamma we observed an up to 5-fold loss of target cell preference for NP(Lys-Ang II). Thus, our in vitro results suggest a strong influence of IFN-gamma on nanoparticle distribution, which is relevant in the context of nanotherapeutic approaches to cancer treatment, as IFN-gamma is strongly expressed in tumors. For the target cell tropism of viruses, our results provide a conclusive hypothesis for the underlying mechanism behind non-directed viral distribution in the presence of IFN-gamma. CI - Copyright (c) 2023 Elsevier B.V. All rights reserved. FAU - Zimmer, Oliver AU - Zimmer O AD - Department of Pharmaceutical Technology, University of Regensburg, Regensburg, Bavaria 93053, Germany. FAU - Walter, Melanie AU - Walter M AD - Department of Pharmaceutical Technology, University of Regensburg, Regensburg, Bavaria 93053, Germany. FAU - Remmert, Marius AU - Remmert M AD - Department of Pharmaceutical Technology, University of Regensburg, Regensburg, Bavaria 93053, Germany. FAU - Maier, Olga AU - Maier O AD - Institute for Molecular and Cellular Anatomy, University of Regensburg, Regensburg, Bavaria 93053, Germany. FAU - Witzgall, Ralph AU - Witzgall R AD - Institute for Molecular and Cellular Anatomy, University of Regensburg, Regensburg, Bavaria 93053, Germany. FAU - Goepferich, Achim AU - Goepferich A AD - Department of Pharmaceutical Technology, University of Regensburg, Regensburg, Bavaria 93053, Germany. Electronic address: achim.goepferich@ur.de. LA - eng PT - Journal Article DEP - 20230902 PL - Netherlands TA - J Control Release JT - Journal of controlled release : official journal of the Controlled Release Society JID - 8607908 SB - IM OTO - NOTNLM OT - Biodistribution OT - Cholesterol-25-hydroxylase (CH25H) OT - Interferon-gamma OT - Nano-bio interactions OT - Preferential uptake OT - Targeted nanoparticles OT - Targeting efficiency COIS- Conflicts of interest There are no conflicts of interest to declare. EDAT- 2023/08/21 00:41 MHDA- 2023/08/21 00:41 CRDT- 2023/08/20 19:26 PHST- 2023/04/17 00:00 [received] PHST- 2023/08/04 00:00 [revised] PHST- 2023/08/16 00:00 [accepted] PHST- 2023/08/21 00:41 [pubmed] PHST- 2023/08/21 00:41 [medline] PHST- 2023/08/20 19:26 [entrez] AID - S0168-3659(23)00534-5 [pii] AID - 10.1016/j.jconrel.2023.08.034 [doi] PST - ppublish SO - J Control Release. 2023 Oct;362:325-341. doi: 10.1016/j.jconrel.2023.08.034. Epub 2023 Sep 2.