ZHANG Ruiping 1 , LIU Qiang 2 , LI Jianding 3 , ZHANG Kun 3 , LI Jing 4
  • 1Department of Surgery, 2Department of Orthopaedics, 3Department of Radiology, First Hospital, Shanxi Medical University, Taiyuan Shanxi, 030001, P.R.China;;
  • 4Department of Molecular Biology, Shanxi Medical University.;
BMSCs; Superparamagnetic iron oxid; Cell viability; MR imaging
Export PDF Favorites Scan Get Citation

Abstract Full text Figures/Tables References Cited by

Objective To explore the label ing efficiency and cellular viabil ity of rabbit BMSCs labeled with different concentrations of superparamagnetic iron oxide (SPIO) particles, and to determine the feasibil ity of magnetically labeled stem cells with MR imaging. Methods The BMSCs were collected from il iac marrow of 10 adult rabbits (weighing 2.5-3.0 kg) and cultured. The SPIO-poly-L-lysine compound by different ratios mixed with medium, therefore, the final concentration of Fe2+ was 150 (group A), 100 (group B), 50 (group C) and 25 μg (group D) per mL, respectively, the 3rd generation BMSCs culture edium was added to lable; non-labeled cells served as a control (group E). MR imaging of cell suspensions was performed by using T1WI and T2WI sequences at a cl inical 1.5 T MRI system. Results BMSCs were efficiently labeled with SPIO, labeled SPIO particles were stained in all cytoplasms of groups A, B, C and D. With the increasing of Fe2+ concentration, blue dye particles increased. The staining result was negative in group E. The cell viabil ity in groups A, B, C, D and E was 69.20% ± 6.11%, 80.41% ± 2.42%, 94.32% ± 0.67%, 96.24% ± 0.34% and 97.43% ± 0.33%, respectively. There were statistically significant differences between groups A, B and groups C, D and E (P  lt; 0.05), and between group A and group B (P  lt; 0.05). T1WI images had no specific difference among 5 groups, T2WI images decreased significantly in groups A, B, C, decreased sl ightly in group D, and had l ittle change in group E. The T2WI signal intensities of groups A, B, C, D and E were 23.37 ± 6.21, 26.73 ± 3.60, 29.63 ± 2.82, 45.03 ± 6.76 and 783.15 ± 7.38, respectively, showing significant difference between groups A, B, C, D and group E (P  lt; 0.05), and between groups A, B, C and group D (P lt; 0.05). Conclusion BMSCs can be easily and efficiently labeled by SPIO without interference on the cell viabil ity in labled concentration of 20-50 μg Fe2+ per mL. MRI visual ization of SPIO labeled BMSCs is feasible, which may be critical for future experimental studies.

Citation： ZHANG Ruiping,LIU Qiang,LI Jianding,ZHANG Kun,LI Jing. BIOLOGICAL CHARACTERISTICS AND MR IMAGING OF SUPERPARAMAGNETIC IRON OXIDE LABELED BMSCs. Chinese Journal of Reparative and Reconstructive Surgery, 2009, 23(7): 851-855. doi: Copy