Synthesis of diacylated γ-glutamyl-cysteamine prodrugs, and in vitro evaluation of their cytotoxicity and intracellular delivery of cysteamine
Frost, Lisa, Suryadevara, Pratap, Cannell, Stephanie, Groundwater, Paul, Hambleton, Paul and Anderson, Rosaleen (2016) Synthesis of diacylated γ-glutamyl-cysteamine prodrugs, and in vitro evaluation of their cytotoxicity and intracellular delivery of cysteamine. European Journal of Medicinal Chemistry, 109. pp. 206-215.
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Abstract
To overcome the major disadvantages of cysteamine, the only registered treatment for the rare genetic disease cystinosis, nine prodrugs of γ-glutamyl-cysteamine (4) were synthesized for evaluation. Esterification of the thiol conferred oxidative stability, while sufficient lipophilicity for oral bioavailability was achieved by acylation of the α-carboxyl group of γ-glutamyl-cysteamine (4). Low cytotoxicity was observed in cultured HaCaT keratinocytes using the MTT assay, with EC50 values higher than or similar to that of cysteamine. Successful uptake of the esterified prodrugs and the subsequent release of cysteamine into cultured human proximal tubule epithelial cells were demonstrated using CMQT derivatisation and HPLC with UV detection. These prodrugs show potential as novel delivery vehicles of cysteamine to improve the treatment of the genetic disorder nephropathic cystinosis.
Item Type: | Article |
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Subjects: | Sciences |
Divisions: | Faculty of Applied Sciences Faculty of Applied Sciences > Department of Pharmacy Health and Wellbeing Health Sciences and Wellbeing Beacon Health Sciences and Wellbeing Beacon > Drug Discovery and Application Workstream |
Depositing User: | Paula Normington |
Date Deposited: | 22 Jan 2016 11:10 |
Last Modified: | 19 Sep 2017 16:10 |
URI: | http://sure.sunderland.ac.uk/id/eprint/5904 |
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