Abstract
In the course of our search for neuroprotective agents, dysideamine ( 1), a new sesquiterpene aminoquinone, was isolated along with bolinaquinone ( 2) from Indonesian marine sponge of Dysidea sp. Compounds 1 and 2 showed neuroprotective effect against iodoacetic acid (IAA)-induced cell death at 10 μM concentration in mouse HT22 hippocampal neuronal cells. Dysideamine ( 1) inhibited production of reactive oxygen species (ROS) by IAA treatment, whereas it exhibited no effect on depletion of intracellular ATP of the IAA-treated HT22 cells. Moreover, 1 induced neurite outgrowth against mouse neuroblastma Neuro 2A cells with increase of acetylcholinesterase (AChE) activity, which is a marker of neuronal differentiation.
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