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KMID : 0893420130140040481
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Journal of Veterinary Science
2013 Volume.14 No. 4 p.481 ~ p.486
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Evaluation of a side population of canine lymphoma cells using Hoechst 33342 dye
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Kim Myung-Chul
DCosta Susan
Suter Steven
Kim Yong-Baek
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Abstract
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Cancer stem cell (CSC) research has increased exponentially to gain further insight into the mechanisms underlying both carcinogenesis and chemotherapy resistance. The present study was performed to explore the potential value of a side population (SP) assay for identifying and characterizing putative CSCs among canine lymphoma cells. Canine lymphoma cells from cell lines and clinical samples were subjected to the SP assay consisting of Hoechst 33342 staining and subsequent flow cytometric analysis. The SP assay revealed various amounts of a SP fraction among the canine lymphoma cells. The percentages of SP were not affected by inhibitors of membrane transporters, verapamil hydrochloride, or fumitremorgin C. Most of the canine lymphoma cells expressed high levels of Bmi-1 and membrane transporter proteins such as ABCG2 and phosphorylated (p)-glycoprotein. This investigation lays the groundwork for further studies of the biological behaviors and molecular characteristics of CSCs in cases of canine lymphoma.
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KEYWORD
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dog, flow cytometry, Hoechst 33342, lymphoma, side population
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