Gemcitabine anti-proliferative activity significantly enhanced upon conjugation with cell-penetrating peptides |
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Authors: | Nuno Vale Abigail Ferreira Iva Fernandes Cláudia Alves Maria João Araújo Nuno Mateus Paula Gomes |
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Affiliation: | 1. UCIBIO/REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences of University of Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal;2. Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy of University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal;3. LAQV/REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences of University of Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal |
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Abstract: | Gemcitabine proven efficiency against a wide range of solid tumors and undergoes deamination to its inactive uridine metabolite, which underlies its low bioavailability, and tumour resistance was also associated with nucleoside transporter alterations. Hence, we have conjugated gemcitabine to cell-penetrating peptides (CPP), in an effort to both mask its aniline moiety and facilitate its delivery into cancer cells. Two CPP-drug conjugates have been synthesized and studied regarding both the time-dependent kinetics of gemcitabine release and their anti-proliferative activity on three different human cancer cell lines. Results obtained reveal a dramatic increase in the anti-proliferative activity of gemcitabine in vitro, upon conjugation with the CPPs. As such, CPP-gemcitabine conjugates emerge as promising leads for cancer therapy. |
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Keywords: | Gemcitabine Cell-penetrating peptides pVEC Penetratin Cancer |
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