title: The effects of clinically used MRI contrast agents on the biological properties of human mesenchymal stem cells.
abstract: This study was undertaken to compare the labeling efficiencies of three iron-oxide based MRI contrast agents [Feridex, Resovist and monocrystalline iron oxide (MION)] and to evaluate their effects on the biological properties of human mesenchymal stem cells (hMSCs). The hMSCs were cultivated for 1 and 7 days after 24-h labeling with iron oxide nanoparticles (12.5 microg Fe/mL) in the presence of poly-L-lysine (0.75 microg/mL). The hMSCs were labeled more efficiently with use of Feridex, Resovist as compared to MION. No significant differences were observed in terms of viability and proliferation of labeled hMSCs. The level of Oct-4 mRNA increased in labeled hMSCs at day 1 and the cellular phenotype changed from CD45-/CD44+/CD29+ to CD45low/CD44+/CD29+ at day 7, which closely resembles the phenotype of fresh bone marrow-derived hMSCs. Our study has demonstrated that the Feridex or Resovist is the preferred labeling agent for hMSCs. There was a change in Oct-4 and CD45 expression after labeling.
authors.affiliation: Department of Radiology, Seoul National University Hospital, Seoul, Korea.
authors.forename: Hoe Suk
authors.initials: HS
authors.lastname: Kim
authors.forename: Sue Young
authors.initials: SY
authors.lastname: Oh
authors.forename: Hyun Jung
authors.initials: HJ
authors.lastname: Joo
authors.forename: Kyu-Ri
authors.initials: KR
authors.lastname: Son
authors.forename: In-Chan
authors.initials: IC
authors.lastname: Song
authors.forename: Woo Kyung
authors.initials: WK
authors.lastname: Moon
mesh_terms: D015415:Biomarkers / Q000378:metabolism; D049109:Cell Proliferation / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D003287:Contrast Media / Q000494:pharmacology*; D005290:Ferric Compounds / Q000378:metabolism; D005786:Gene Expression Regulation / Q000187:drug effects; D006801:Humans; D007501:Iron / Q000378:metabolism; D008279:Magnetic Resonance Imaging; D059630:Mesenchymal Stem Cells / Q000166:cytology* / Q000187:drug effects* / Q000648:ultrastructure; D053758:Nanoparticles / Q000648:ultrastructure; D050814:Octamer Transcription Factor-3 / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D013194:Staining and Labeling
chemical_list: D015415:Biomarkers; D003287:Contrast Media; D005290:Ferric Compounds; D050814:Octamer Transcription Factor-3; C494173:POU5F1 protein, human; D012333:RNA, Messenger; C000499:ferric oxide; D007501:Iron