An engineered abcb4 expression model reveals the central role of NF-κB in the regulation of drug resistance in zebrafish.

Multi-drug resistance (MDR) is a phenomenon that tumor cells are exposed to a chemotherapeutic drug for a long time and then develop resistance to a variety of other anticancer drugs with different structures and different mechanisms. The in vitro studies of tumor cell lines cannot systematically reflect the role of MDR gene in vivo, and the cost of in vivo studies of transgenic mice as animal models is high. Given the myriad merits of zebrafish relative to other animal models, we aimed to establish a screening system using zebrafish stably expressing ATP-binding cassette (ATP-cassette) superfamily transporters and unveil the potential regulatory mechanism.

[Effect of Doxorubicin on abcb4 Gene Expression in Zebrafish (Danio rerio) Embryos].

Objective: To determine the effect of doxorubicin (DOX) on abcb4 gene expression and the role of abcb4 gene in multidrug-resistance.

Methods: Zebrafish embryos were treated with 2 mL/L DMSO, 10 μmol/L DOX and 2 mL/L DMSO+10 μmol/L DOX, respectively. The zebrafish embryos treated with Eggwater served as controls.