Wiskostatin (253449-04-6) is a selective, reversible inhibitor of neural Wiskott-Aldrich syndrome protein (N-WASP) activity1. Binds to the regulatory domain of N-WASP and inhibits activation of Arp2/3 complex by forcing N-WASP into an inactive conformation2. Inhibits PIP2-induced actin polymerization (EC50=4 μM). Wiskostatin perturbs agrin-elicited acetylcholine receptor clustering3. Inhibits the formation of dendritic spines and synapses in hippocampal neurons.
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4) Wegner et al. (2008), N-wasp andx the arp2/3 complex are critical regulators of actin in the development of dendritic spines and synapses; J. Biol. Chem., 283 15912