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.
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.
Triazene drug metabolites. Part 17: synthesis and plasma hydrolysis of acyloxymethyl carbamate derivatives of antitumour triazenes
作者:Emı́lia Carvalho、Ana Paula Francisco、Jim Iley、Eduarda Rosa
DOI:10.1016/s0968-0896(00)00100-0
日期:2000.7
contribute to the hydrolysis reaction. The sensitivity of the hydrolysis reaction to various structural parameters in the substrates indicates that hydrolysis occurs at the ester rather than the carbamate functionality. In plasma, the rates of hydrolysis correlate with partition coefficients, the most lipophilic compounds being the most stable. An aspirin derivative suffers two consecutive enzymatic reactions
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
The selective cytotoxicity of new triazene compounds to human melanoma cells
作者:Ana Sousa、Fábio Santos、Maria Manuela Gaspar、Susana Calado、João D. Pereira、Eduarda Mendes、Ana Paula Francisco、Maria Jesus Perry
DOI:10.1016/j.bmc.2017.04.049
日期:2017.8
human plasma (1.5 ≤ t½ (h) ≤ 161). Compounds 3c–n revealed to be excellent tyrosinase substrates (0.74 ≤ t½ (min) ≤ 6) with the best tyrosinase substrate 3l releasing MMT 45 s after tyrosinase activation. Structure-activity relationship studies allowed the identification of the better structural features for enzyme affinity. Furthermore, the derivatives 3l and 3m showed cell selectivity with significant
Targeting Gliomas: Can a New Alkylating Hybrid Compound Make a Difference?
作者:Rui Pinheiro、Cláudia Braga、Gisela Santos、Maria R. Bronze、Maria J. Perry、Rui Moreira、Dora Brites、Ana S. Falcão
DOI:10.1021/acschemneuro.6b00169
日期:2017.1.18
highly invasive and resistant nature of GBM. Hybrid compounds may open new horizons within this challenge. The multicomponent therapeutic strategy here used resides on a combination of two repurposing drugs acting by different but potentially synergistic mechanisms, improved efficacy, and lower resistance effects. We synthesized a new hybrid compound (HYBCOM) by covalently binding a TMZ analogue to valproic