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Sichuan Da Xue Xue Bao Yi Xue Ban. 2014 Nov;45（6）:898-902. [Bone mesenchymal stem cell transplantation for acute myocardial infarction: in vivo tracing with multi-modality molecular imaging]. [Article in Chinese] Chen HZ1, Xia R, Guo YK, Hou JL, Zhang Li-zhi, Li ZL, Ai H, Ning G, Gao FB. Author information 1Department of Radiology, West China Second University Hospital, Sichuan University, Chengdu, China.
Abstract OBJECTIVE: To investigate the feasibility of tracking bone mesenchymal stem cell （BMSCs） dual- labeled with polyethylenimine 2k-superparamagnetic iron oxide （PEI2k-SPIO） and Luciferase transplantation for acute myocardial infarction in vivo by using magnetic resonance imaging （MRI） and fluorescence imaging. METHODS: BMSCs/Luciferase was incubated with culture medium containing PEI2k-SPIO for 24 h. Prussian-blue staining and MTT were used to assess the efficacy and safety of labeling with PEI2k-SPIO. Guided with echocardiography, the dual-labeled BMSCs were injected into the margin of infarction myocardium. MRI and fluorescence imaging were performed to monitor the cells in vivo at different times （1,2,3,7 d）. RESULTS: As demonstrated by MTT, there was no significant difference in survival rate between the labeled and unlabeled cells （P>0. 05）. Within a week after transplantation, all PEI2k-SPIO-labeled BMSCs showed a significant decreased signal on MRI. Dual-labeled BMSCs were detected bioluminescence with fluorescence imaging, but disappeared after one week. CONCLUSION: Multi- modality imaging can not only trace the location of labeled BMSCs but also demonstrate the survival of labeled BMSCs in vivo. PMID: 25571711 PubMed - indexed for MEDLINE]
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