Abstract
It has been reported that phospholipid nanoparticles (PNPs) including liposomes and exosomes could efficiently induce lipid droplets (LDs) in macrophages. However, in non-macrophage cells, the effects of PNPs on the induction of LDs have not been thoroughly investigated. In this report, we directly compared non-macrophage and macrophage cell lines in terms of LD induction by various formulation of liposomes containing phosphatidylserine and exosomes. All non-macrophage cell lines as well as macrophage cell lines tested in this study showed evident LD induction in response to these PNPs, though the efficacy of LD induction in non-macrophage cell lines varied considerably. Our results suggest that LD formation is a common and crucial response to PNPs in mammalian cells not only in macrophages but also in non-macrophage cells.
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