Journal article
Pharmacokinetics of 3'-O-retinoyl-5-fluoro-2'-deoxyuridine (RFUdR), a dual acting mutually masking prodrug, and its metabolites in tumor bearing mice
Current drug delivery, Vol.10(5), pp.557-563
10/2013
Handle:
https://hdl.handle.net/2376/110065
PMID: 23755721
Abstract
3'-O-Retinoyl-5-fluoro-2'-deoxyuridine (RFUdR) is a putative dual-acting, mutually-masking (DAMM) prodrug for the treatment of cancer. As part of the proof of principle for the DAMM concept, the concentrations of RFUdR and its post-hydrolysis active metabolites, 5-fluoro-2'-deoxyuridine (FUdR) and all-trans-retinoic acid (RA), were determined in plasma and selected tissues following either bolus intravenous (i.v.; 12.5 μmol/kg) or oral (p.o.; 13.7 μmol/kg) doses of RFUdR to mice bearing EMT6 murine mammary tumors. The concentrations of RFUdR and its primary metabolites were measured by high-performance liquid chromatography. A three compartment model provided the best fit for plasma RFUdR after an i.v. bolus, whereas FUdR and RA data were best fit by a one compartment model. The terminal half-life of RFUdR in plasma was 9 hours. The AUC of RFUdR in tumor (3400 μmol/L.min) was estimated to be about 4- fold higher than its AUC in the plasma (809 ± 241 μmol/L.min). A short-duration, saturated elimination phase for RFUdR was observed in both liver and kidney following an i.v. bolus. Neither unchanged RFUdR nor RA was detected in urine. The high bioavailability (~90%) following oral dosing with RFUdR indicates that this DAMM prodrug may be suitable for oral dosing to deliver FUdR and RA for cancer chemotherapy.
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Details
- Title
- Pharmacokinetics of 3'-O-retinoyl-5-fluoro-2'-deoxyuridine (RFUdR), a dual acting mutually masking prodrug, and its metabolites in tumor bearing mice
- Creators
- Zuping Xia - Div. Nucl. Med., Cross Cancer Institute, Edmonton, AB, Canada T6G 1Z2.. leonard.wiebe@ualberta.caEdward E KnausLeonard I Wiebe
- Publication Details
- Current drug delivery, Vol.10(5), pp.557-563
- Academic Unit
- Pharmacy and Pharmaceutical Sciences, College of
- Publisher
- United Arab Emirates
- Grant note
- Canadian Institutes of Health Research
- Identifiers
- 99900547013801842
- Language
- English
- Resource Type
- Journal article