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Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences

Evaluation of in vitro toxicity of peptide (N-acetyl-Leu-Gly-Leu-COOH)-substituted-β-cyclodextrin derivative, a novel drug carrier, in PC-12 cells.


PMID 24359794

Abstract

Cyclodextrins (CDs) have been shown to improve physicochemical and biopharmaceutical properties of drugs when low solubility and low safety limit their use in the pharmaceutical field. Recently, a new amphiphilic peptide-substituted-β-CD, hepta-(N-acetyl-Leu-Gly-Leu)-β-CD (hepta-(N-acetyl-LGL)-β-CD), is developed which exhibited good solubility, strong inclusion ability and an appropriate average molecular weight. However, there is limited information available about its toxic effects. This study was designed to evaluate cytotoxic effects of the hepta-(N-acetyl-LGL)-β-CD (50, 200, 400, and 800xa0μg/ml) on rat pheochromocytoma PC-12 cells. A significant reduction of cell viability with IC50 values of 1115.0xa0μg/ml, 762.4xa0μg/ml, and 464.9xa0μg/ml at 6, 12, and 24xa0h post-treatment, respectively, as well as increased lipid peroxide levels and DNA damage were observed. In conclusion, hepta-(N-acetyl-Leu-Gly-Leu)-β-CD exhibit significant toxic properties at high concentrations, probably through induction of oxidative stress and genotoxicity.