MR R2*map for tracing superparamgnetic ironoxides labeled endothelial progenitor cells in vitro / 中华肝脏病杂志
Chinese Journal of Hepatology
; (12): 50-52, 2009.
Article
em Zh
| WPRIM
| ID: wpr-250059
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>OBJECTIVES</b>To investigate the value of R2*map for quantitatively tracing superparamgnetic ironoxides (SPIO) labeled endothelial progenitor cells (EPCs).</p><p><b>METHODS</b>The EPCs were isolated from Balb/c mice bone marrow and cultured in vitro. After 7 days, expression of acetylated low-density lipoprotein (acLDL) and Ulex europaeus agglutinin-1 (UEA-1), two markers of EPCs, was observed by double staining using fluorescence microscope, the expression of stem cell antigen-1 and vascular endothelial growth factor receptor-2 (VEGFR-2) was confirmed by flow cytometry. EPCs were labeled by incubating with 50 microg/ml SPIO and 6 microl/ml lipofectamine2000, SPIO labeled EPCs were observed under transmission electron microscope (TEM). Labeled and unlabeled EPCs were mixed with 10 g/L agarose and scanned using a 3.0T MR scanner, R2* map and R2 map images were obtained on workstation.</p><p><b>RESULT</b>After 7 days of in vitro culture, most of the cells showed characteristics of EPCs. There was no morphological difference between SPIO labeled EPCs and unlabeled EPCs. R2* and R2 values exhibited a linear correlation with the number of labeled cells in the agarose gel. Compared to R2, R2* was a better indicator of the number of labeled cells.</p><p><b>CONCLUSION</b>MR R2* map can be used to trace SPIO labeled EPCs quantitatively.</p>
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Base de dados:
WPRIM
Assunto principal:
Células-Tronco
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Imageamento por Ressonância Magnética
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Compostos Férricos
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Células Cultivadas
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Química
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Biologia Celular
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Células Endoteliais
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Nanopartículas
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Magnetismo
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Métodos
Limite:
Animals
Idioma:
Zh
Revista:
Chinese Journal of Hepatology
Ano de publicação:
2009
Tipo de documento:
Article