Leukemic cell xenograft in zebrafish embryo for investigating drug efficacy

Zebrafish were proposed as an alternative to mammalian investigation of their anti-leukemic activity in such models. models to assess the efficacy and toxicity of anti-leukemic Altogether, xenografted leukemic cells in zebrafish embryos drugs. Due to the limited number of transgenic zebrafish are a pharmacologically relevant model for screening non- leukemia models, we explored human leukemic cell teratogenic drugs. xenograft in zebrafish embryos. Human leukemic cell lines and blast cells sorted from patients with acute myelogenous Key words: Zebrafish model, acute leukemia, antileukemic leukemia were injected 48 hours post-fertilization and drugs, pharmacology, teratogenicity. remained in the circulation of zebrafish embryos for several days without affecting their development. Imatinib and oxaphorines did not demonstrate any toxicity on normal zebrafish embryos and decreased the leukemic burden in animals xenografted with sensitive leukemic cell lines. Two other molecules, all-trans retinoic acid and the translation inhibitor 4EGI-1, demonstrated teratogenic effects at concentrations shown to be efficient in vitro, which precluded investigation of their anti-leukemic activity in such models. Altogether, xenografted leukemic cells in zebrafish embryos are a pharmacologically relevant model for screening nonteratogenic drugs.