Staurosporine-induced Differentiation in a Human Neuroblastoma Cell Line, NB-1

Abstract
A new differentiation screening system employing a human neuroblastoma cell line. NB-1, was used to isolate staurosporine as an inducer obtained from the culture broth of Streptomyces actuosus. Staurosporine at a concentration of 20 nm induced elongation of neurites and cell enlargement one hour after treatment of NB-1. In addition, the agent had a cytotoxic effect against NB-1 at a concentration of more than 0.21 μm.