PMID- 24227632 OWN - NLM STAT- MEDLINE DCOM- 20140317 LR - 20161125 IS - 1535-3699 (Electronic) IS - 1535-3699 (Linking) VI - 239 IP - 1 DP - 2014 Jan TI - Magnetic resonance imaging tracking of ultra small superparamagnetic iron oxide labeled rabbit dendritic cells. PG - 13-23 LID - 10.1177/1535370213508712 [doi] AB - Dendritic cells (DCs) play an important role in atherosclerosis plaque formation, but the mechanism has not been elucidated clearly. This study is designed to establish a method for tracing DCs in vivo facilitating the investigation of the DCs' specific roles in atherosclerosis. Rabbit DCs labeled by different concentrations of ultra small superparamagnetic iron oxide (USPIO) were injected into atherosclerosis rabbit model and traced with magnetic resonance imaging (MRI). Results showed that USPIO labeling nearly have no cytotoxicity to DCs in low concentrations (<500 microg/mL) but induced some decrease of cell viability at high concentrations (>500 microg/mL). Moreover, USPIO labeling, from 200 to 2000 microg/mL, caused a dose-dependent decrease of the mitochondrial membrane potential in DCs. The high labeling concentration (2000 microg/mL) triggered necrosis instead of apoptosis in DCs. By T2WI and fs T2WI sequence imaging comparison, DCs were found to exist in rabbit abdominal artery plaques after 24 h of transplantation and in spleen after one week detected by Prussian blue staining of tissue sections. We concluded that about 200 microg/mL USPIO is ideal to effectively label DCs for MRI tracing in vivo without a threat to cell viability. Combining USPIO labeling and MRI to track the movement of injected DCs in vivo is a feasible method. FAU - Zhou, Jing AU - Zhou J AD - College of Biophotonics, South China Normal University, Guangzhou 510631, China. FAU - Yang, Fuyuan AU - Yang F FAU - Zhou, Quan AU - Zhou Q FAU - Yang, Kanrong AU - Yang K FAU - Chen, Wenli AU - Chen W LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131113 PL - Switzerland TA - Exp Biol Med (Maywood) JT - Experimental biology and medicine (Maywood, N.J.) JID - 100973463 RN - 0 (Ferric Compounds) RN - 0 (Magnetite Nanoparticles) RN - 1K09F3G675 (ferric oxide) SB - IM MH - Animals MH - Cell Survival/drug effects MH - Dendritic Cells/*diagnostic imaging/metabolism MH - Dose-Response Relationship, Drug MH - Ferric Compounds/adverse effects/chemistry/*pharmacology MH - *Magnetic Resonance Imaging MH - *Magnetite Nanoparticles MH - Membrane Potential, Mitochondrial/drug effects MH - Necrosis/chemically induced/diagnostic imaging/metabolism MH - Rabbits MH - Radiography MH - Spleen/diagnostic imaging OTO - NOTNLM OT - Ultra small superparamagnetic iron oxide OT - atherosclerotic rabbit model OT - dendritic cells OT - magnetic resonance imaging EDAT- 2013/11/15 06:00 MHDA- 2014/03/19 06:00 CRDT- 2013/11/15 06:00 PHST- 2013/11/15 06:00 [entrez] PHST- 2013/11/15 06:00 [pubmed] PHST- 2014/03/19 06:00 [medline] AID - 1535370213508712 [pii] AID - 10.1177/1535370213508712 [doi] PST - ppublish SO - Exp Biol Med (Maywood). 2014 Jan;239(1):13-23. doi: 10.1177/1535370213508712. Epub 2013 Nov 13.