Pyridostatin (RR82)

Pyridostatin (RR82) hydrochloride (10 μM; 48 hours) induces cell cycle arrest.Pyridostatin hydrochloride is a very selective G-quadruplex DNA-binding small molecule designed to form a complex with and stabilize G-quadruplex structure. Pyridostatin hydrochloride causes neurite retraction, synaptic loss, and dose-dependent neuronal death. In cultured primary neurons, Pyridostatin hydrochloride induces the formation of DNA DSBs. Remarkably, Pyridostatin hydrochloride (1-5 μM, overnight) downregulates the BRCA1 protein, a protein that guards and repairs the neuronal genome, at the transcriptional level.