Isatin was reported to possess anticancer activities through its effect on tumor proliferation, apoptosis, and metastasis in vitro and in vivo. This study aimed to elucidate the underlying mechanism behind isatin's ability to inhibit neuroblastoma cell metastasis. Our results demonstrated that isatin could inhibit neuroblastoma cell proliferation, invasion, and migration in a dose-dependent manner. Moreover, isatin inhibited the expression level of monoamine oxidase A as well as that of its downstream protein hypoxia-inducible factor 1[alpha]. Further study indicated that isatin inhibited reactive oxygen species production, extracellular signal-regulated kinase activation, vascular endothelial growth factor receptor-1 phosphorylation, and chemokine receptor type 4 expression. All results support the potential antimetastatic effect of isatin in neuroblatoma cells. Copyright (C) 2017 Wolters Kluwer Health, Inc. All rights reserved.
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