Labeling of macrophage cell using biocompatible magnetic nanoparticles

Ji Hyun Min, Sung Tae Kim, Ji Sung Lee, Kwanghee Kim, Jun Hua Wu, Jaeho Jeong, Ah Young Song, Kyung Mi Lee, Young Keun Kim

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


This work investigates the intrinsic cell labeling efficiency of the Fe3O4 nanoparticles prepared by a modified thermal decomposition method using nontoxic precursors and a biocompatible polymer surfactant. This method eliminates the current need for additional step of surface modification. The structural analysis reveals the highly crystalline feature of the nanoparticles, while the magnetic measurement shows their superparamagnetic behavior at room temperature. Fe3O4 nanoparticles were efficiently incorporated into the murine macrophage cells (RAW264.7) without visible cytotoxicity. Cell labeling efficiency was found to be over 90 as measured by magnetically activated cell sorting and physical property measurement system. Therefore, such Fe3O4 nanoparticles could provide a useful magnetic cell labeling tool for macrophage cells using their phagocytic/endocytic activity and further apply to the other relevant biomedical applications.

Original languageEnglish
Article number07B309
JournalJournal of Applied Physics
Issue number7
Publication statusPublished - 2011 Apr 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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