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Article

Experimental study of endothelial progenitor cells labeled with superparamagnetic iron oxide in vitro

  • Authors:
    • Meng‑Qi Wei
    • Di‑Di Wen
    • Xiao‑Ying Wang
    • Yi Huan
    • Yong  Yang
    • Jian Xu
    • Kang Cheng
    • Min‑Wen Zheng
  • View Affiliations / Copyright

    Affiliations: Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China, Department of Ultrasound, The People's Liberation Army No. 323 Hospital, Xi'an, Shaanxi 710054, P.R. China, Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
  • Pages: 3814-3819
    |
    Published online on: December 22, 2014
       https://doi.org/10.3892/mmr.2014.3122
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Abstract

Endothelial progenitor cells (EPCs) have an essential role in counteracting risk factor‑induced endothelial injury and protecting against the development of vascular injury, such as myocardial infarction. Magnetic resonance imaging (MRI) was reported to be effective in tracking transplanted stem cells following cell‑labeling with superparamagnetic iron oxide (SPIO) nanoparticles. SPIO has previously been used to label and track EPCs; however, the safest concentration of SPIO for labeling EPCs on a cellular level has remained to be elucidated. In addition, the optimum number of SPIO‑labeled cells required to produce the highest quality magnetic resonance images has not yet been determined. In the present study, EPCs were isolated from the bone marrow of minipigs using density gradient centrifugation. Their biological activity was then studied using flow cytometric analysis. Cells were incubated at different concentrations of SPIO for different durations and then the growth curve, apoptosis, morphology and labeling efficiency of the EPCs were detected using optical and electron microscopy. T2‑weighted fast spin‑echo (T2WITSE) MRI of the different numbers of SPIO‑labeled EPCs (35 µg/ml) were then obtained in axial and sagittal planes. The results of the present study demonstrated that EPCs were efficiently labeled with SPIO, with a labeling efficiency in each group of ~100% following incubation for 24 h. SPIO was found to be localized in the endosomal vesicles of EPCs, which was confirmed by electron microscopy. When the concentration of SPIO was <70 µg/ml, no significant differences were observed in cell viability, proliferative capability (P>0.05) and morphology between labeled and unlabeled EPCs. Furthermore, the T2WITSE signal intensity was significantly decreased in the groups of 5.0x105/ml and 1.0x105/ml compared with that of the control (P<0.05). In conclusion, the results of the present study indicated that 35 µg/ml was the most effective concentration of SPIO to label EPCs in vitro and acquire a high quality MRI. These findings may therefore contribute to the development of a promising novel therapeutic method for the treatment of myocardial infarction following autograft with SPIO‑labeled EPCs in vivo.
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Copy and paste a formatted citation
Spandidos Publications style
Wei MQ, Wen DD, Wang XY, Huan Y, Yang Y, Xu J, Cheng K and Zheng MW: Experimental study of endothelial progenitor cells labeled with superparamagnetic iron oxide in vitro. Mol Med Rep 11: 3814-3819, 2015.
APA
Wei, M., Wen, D., Wang, X., Huan, Y., Yang, Y., Xu, J. ... Zheng, M. (2015). Experimental study of endothelial progenitor cells labeled with superparamagnetic iron oxide in vitro. Molecular Medicine Reports, 11, 3814-3819. https://doi.org/10.3892/mmr.2014.3122
MLA
Wei, M., Wen, D., Wang, X., Huan, Y., Yang, Y., Xu, J., Cheng, K., Zheng, M."Experimental study of endothelial progenitor cells labeled with superparamagnetic iron oxide in vitro". Molecular Medicine Reports 11.5 (2015): 3814-3819.
Chicago
Wei, M., Wen, D., Wang, X., Huan, Y., Yang, Y., Xu, J., Cheng, K., Zheng, M."Experimental study of endothelial progenitor cells labeled with superparamagnetic iron oxide in vitro". Molecular Medicine Reports 11, no. 5 (2015): 3814-3819. https://doi.org/10.3892/mmr.2014.3122
Copy and paste a formatted citation
x
Spandidos Publications style
Wei MQ, Wen DD, Wang XY, Huan Y, Yang Y, Xu J, Cheng K and Zheng MW: Experimental study of endothelial progenitor cells labeled with superparamagnetic iron oxide in vitro. Mol Med Rep 11: 3814-3819, 2015.
APA
Wei, M., Wen, D., Wang, X., Huan, Y., Yang, Y., Xu, J. ... Zheng, M. (2015). Experimental study of endothelial progenitor cells labeled with superparamagnetic iron oxide in vitro. Molecular Medicine Reports, 11, 3814-3819. https://doi.org/10.3892/mmr.2014.3122
MLA
Wei, M., Wen, D., Wang, X., Huan, Y., Yang, Y., Xu, J., Cheng, K., Zheng, M."Experimental study of endothelial progenitor cells labeled with superparamagnetic iron oxide in vitro". Molecular Medicine Reports 11.5 (2015): 3814-3819.
Chicago
Wei, M., Wen, D., Wang, X., Huan, Y., Yang, Y., Xu, J., Cheng, K., Zheng, M."Experimental study of endothelial progenitor cells labeled with superparamagnetic iron oxide in vitro". Molecular Medicine Reports 11, no. 5 (2015): 3814-3819. https://doi.org/10.3892/mmr.2014.3122
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