Development of triazene prodrugs for ADEPT strategy: New insights into drug delivery system based on carboxypeptidase G2 activation
摘要:
Six novel urea triazene prodrugs have been synthesized to apply in antibody-directed enzyme prodrug therapy (ADEPT). The chemical and plasmatic stability of L-glutamate triazene prodrugs were evaluated and the chemical reactivity was mainly attributed to an intramolecular catalysis promoted by the neighbouring carboxylate group of the glutamic moiety. These prodrugs showed an elevated binding to plasma proteins. The L-glutamate triazenes were evaluated as prodrugs of the alkylating agent's monomethyltriazenes, by activation of the bacterial enzyme carboxypeptidase G2 (CPG2). The synthesized prodrugs have been shown to be good substrates for CPG2, and therefore new candidates for ADEPT strategy. (C) 2012 Elsevier Ltd. All rights reserved.
Influence of Serum Albumins on Decomposition Rates of Para- Substituted 1-phenyl-3-methyltriazenes and 5-(3-methyl-1-triazeno)imidazole-4-carboxamide in Near Physiological Conditions
作者:Franco Delben、Sergio Paoletti、Giorgio Manzini、Carlo Nisi
DOI:10.1002/jps.2600700815
日期:1981.8
The influence of human serumalbumin on the decompositionrates of some arylmonomethyltriazenes in buffered aqueous solution was investigated. From the experimental data, a model for the triazene-albumin interaction was derived, and the thermodynamic parameters were systematically calculated by two independent methods. The results show marked dependence of the energetics of binding on the substituent
Targeting gliomas with triazene-based hybrids: Structure-activity relationship, mechanistic study and stability
作者:Cláudia Braga、Ana R. Vaz、M. Conceição Oliveira、M. Matilde Marques、Rui Moreira、Dora Brites、Maria J. Perry
DOI:10.1016/j.ejmech.2019.03.048
日期:2019.6
Herein we report novelhybridcompounds based on valproic acid and DNA-alkylating triazene moieties, 1, with therapeutic potential for glioblastoma multiforme chemotherapy. We identified hybridcompounds 1d and 1e to be remarkably more potent against glioma and more efficient in decreasing invasive cell properties than temozolomide and endowed with chemical and plasma stability. In contrast to temozolomide
Towards an efficient prodrug of the alkylating metabolite monomethyltriazene: Synthesis and stability of N-acylamino acid derivatives of triazenes
作者:Maria de Jesus Perry、Emília Carvalho、Eduarda Rosa、Jim Iley
DOI:10.1016/j.ejmech.2008.06.022
日期:2009.3
A series of 3-[α-(acylamino)acyl]-1-aryl-3-methyltriazenes 6a–l, potential cytotoxic triazene prodrugs, were synthesised by coupling 1-aryl-3-methyltriazenes to N-acylamino acids. Their hydrolysis was studied in isotonic pH 7.4 phosphate buffer and in human plasma, while hydrolysis of the derivative 6a was studied in more depth across a range of pH values. Prodrugs 6a–l hydrolyse by cleavage of the
Synthesis and evaluation of N-acylamino acids derivatives of triazenes. Activation by tyrosinase in human melanoma cell lines
作者:Ana Sofia Monteiro、Joana Almeida、Guadalupe Cabral、Paulo Severino、Paula A. Videira、Ana Sousa、Rafael Nunes、João D. Pereira、Ana Paula Francisco、M. Jesus Perry、Eduarda Mendes
DOI:10.1016/j.ejmech.2013.09.040
日期:2013.12
In this research work we report the synthesis of a new series of triazene prodrugs designed for Melanocyte-Directed Enzyme Prodrug Therapy (MDEPT). These compounds are derived from the N-acyltyrosine amino acid a good enzyme substrate for the tyrosinase enzyme, which is significantly overexpressed in melanoma cells. We analysed their chemical stability and plasma enzymatic hydrolysis, and we also evaluated the release of the antitumoral drug in the presence of the tyrosinase. Subsequently, we performed the evaluation of the prodrug cytotoxicity in melanoma cell lines with different levels of tyrosinase activity. Prodrug 5c showed the highest cytotoxicity against melanoma cell lines, and this effect correlated well with the tyrosinase activity suggesting that prodrug cytotoxicity is tyrosinase-dependent. (C) 2013 Elsevier Masson SAS. All rights reserved.
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作者:Emilia Carvalho、Jim Iley、Maria de Jesus Perry、Eduarda Rosa
DOI:10.1023/a:1011988918476
日期:——
Purpose. The synthesis of chemically stable triazene prodrugs capable of hydrolysing under physiological conditions to liberate cytotoxic monomethyltriazene alkylating agents.Methods, A series of 3-aminoacyl-1-aryl-3-methyltriazenes was synthesised through reaction of 1-aryl-3-methyltriazenes with N-BOC protected amino acids using the DCC method of activation, followed by deprotection of the amino function using HCl in nitromethane. Half-lives for the hydrolysis of these compounds to the corresponding mono-methyltriazenes at 37 degrees C in isotonic phosphate buffer and in 80% human plasma containing 20% phosphate buffer were determined by HPLC.Results, The aminoacyltriazene prodrugs hydrolyse in isotonic phosphate buffer with tin values ranging from 26 to 619 minutes. In human plasma, several decompose at the same rate as in phosphate buffer whereas those containing more lipophilic groups decompose more slowly. A P-alanyl derivative was found to be more stable in phosphate buffer (t(1/2) = 180 minutes) than in plasma (t(1/2) = 53 minutes). An N-acetylated cr-alanyl derivative was found to be chemically stable in phosphate buffer (t(1/2) = 10 hours) but liberated the cytotoxic drug in t(1/2) = 41 minutes in plasma, demonstrating its ability to act as a substrate for plasma enzymes.Conclusions, Aminoacyltriazenes are prodrugs of the antitumour monomethyltriazenes hydrolysing in human plasma with a range of reactivities. The acylation of the alpha-amino group seems to be an effective and simple means of reducing the chemical reactivity of the alpha-aminoacyl derivatives while retaining a rapid rate of enzymatic hydrolysis.