Comparison of multi-drug resistant human hepatocellular carcinoma cell line Bel-7402/DOX model established by two methods

ZHONG Xingguo,GONG Renhua,SUN Dengqun,CAO Baoqiang,FAN Yulin,JIANG Shitao,CAI Jun,HE Xinmiao,LUO Huilai

Medical Journal of the Chinese People Armed Police Forces ›› 2014, Vol. 25 ›› Issue (7) : 728-732.

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Medical Journal of the Chinese People Armed Police Forces ›› 2014, Vol. 25 ›› Issue (7) : 728-732.
ORIGINAL ARTICLES

Comparison of multi-drug resistant human hepatocellular carcinoma cell line Bel-7402/DOX model established by two methods

  • ZHONG Xingguo,GONG Renhua,SUN Dengqun,CAO Baoqiang,FAN Yulin,JIANG Shitao,CAI Jun,HE Xinmiao,LUO Huilai
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Abstract

Objective To compare the biological characteristics of two types of human hepatocellular carcinoma multi-drug resistant cell sub-lines Bel-7402/DOX models established by two methods. Methods We established human hepatocellular carcinoma doxorubicin multi-drug resistant cell sub-lines models Bel-7402/DOXV and Bel-7402/DOXL by in vitro concentration gradient increased induction and nude mice liver-implanted induction, respectively. Phase contrast microscopy was used to observe the cells and MTT (methyl thiazolyl tetrazolium) method was used to detect drug resistance of the two different sub-lines of cells. The ingestion and excretion of cellular doxorubicin (DOX) and the expression of P-glycoprotein (P-gp), multi-drug resistance-sociated protein (MRP) and glutathione S-transfer enzyme system (GSH/GST) were detected by flow cytometry. Results The Bel-7402/DOXV and Bel-7402/DOXL generated cross-resistance to DOX and CDDP (cis-Diaminedichloroplatinum), they showed a significant difference in resistance to Bel-7402 IC50 value (P<0.01). The doubling times were significantly extended, compared with the parent cell line (39 h), and were 65 h (Bel-7402/DOXV) and 46 h (Bel-7402/DOXL). The excretion rates of DOX were significantly increased, compared with the parent cell (34.14%) line and were 81.06% (Bel-7402/DOXV) and 66.56% (Bel-7402/DOXL). Expressions of P-gp and MRP in the two groups of resistant sub-lines cells were significantly enhanced (P<0.01). There was no significant variation in the expression of GSH/GST (P>0.05). Conclusions Stable resistance is involved in the resistant cell line model established by the two methods above. Liver implantation is a good simulation of human hepatocellular and proves to be an ideal model with characteristics similar to human hepatocellular biology and the pharmacokinetics of anticancer drugs.

Key words

hepatocellular carcinoma / multidrug resistance / doxorubicin / cell line model

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ZHONG Xingguo,GONG Renhua,SUN Dengqun,CAO Baoqiang,FAN Yulin,JIANG Shitao,CAI Jun,HE Xinmiao,LUO Huilai. Comparison of multi-drug resistant human hepatocellular carcinoma cell line Bel-7402/DOX model established by two methods[J]. Medical Journal of the Chinese People Armed Police Forces. 2014, 25(7): 728-732
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