Monitoring lipopolysaccharide-induced macrophage polarization by surface-enhanced Raman scattering.

Autor: Yılmaz D; Faculty of Engineering, Department of Genetics and Bioengineering, Yeditepe University, 34755, Istanbul, Turkey.; Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, 34956, Istanbul, Turkey., Culha M; Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, 34956, Istanbul, Turkey. mculha@augusta.edu.; College of Science and Mathematics, Department of Chemistry and Biochemistry, Augusta University, Augusta, GA, USA. mculha@augusta.edu.
Jazyk: angličtina
Zdroj: Mikrochimica acta [Mikrochim Acta] 2024 Aug 20; Vol. 191 (9), pp. 548. Date of Electronic Publication: 2024 Aug 20.
DOI: 10.1007/s00604-024-06635-3
Abstrakt: Macrophages are among the most important components of the innate immune system where the interaction of pathogens and their phagocytosis occur as the first barrier of immunity. When nanomaterials interact with the human body, they have to face macrophages as well. Thus, understanding of nanomaterials-macrophage interactions and underlying mechanisms is crucial. For this purpose, various methods are used. In this study, surface-enhanced Raman scattering (SERS) is proposed by studying lipopolysaccharide (LPS) induced macrophage polarization using gold nanoparticles (AuNPs) as an alternative to the current approaches. For this purpose, the murine macrophage cell line, RAW 264.7 cells, was polarized by LPS, and polarization mechanisms were characterized by nitrite release and reactive oxygen species (ROS) formation and monitored using SERS. The spectral changes were interpreted based on the molecular pathways induced by LPS. Furthermore, polarized macrophages by LPS were exposed to the toxic AuNPs doses to monitor the enhanced phagocytosis and related spectral changes. It was observed that LPS induced macrophage polarization and enhanced AuNP phagocytosis by activated macrophages elucidated clearly from SERS spectra in a label-free non-destructive manner.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature.)
Databáze: MEDLINE
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