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
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
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
Sulfur Analogues of Tyrosine in the Development of Triazene Hybrid Compounds: A New Strategy against Melanoma
作者:Margarida Granada、Eduarda Mendes、Maria Jesus Perry、Maria João Penetra、Maria Manuela Gaspar、Jacinta O. Pinho、Sofia Serra、Catarina Teixeira António、Ana Paula Francisco
DOI:10.1021/acsmedchemlett.1c00252
日期:2021.11.11
and 13b were found to be excellent tyrosinase substrates (0.5 min ≤ t1/2 ≤ 3.7 min). Furthermore, derivatives 11 and 13 were evaluated for their molecularproperties, hepatotoxicity, in vivo toxicity profile, and assessment of cytotoxic activity in melanoma and non-melanoma cell lines. The results were compared with those obtained for temozolomide, a triazene used in melanoma therapy. It was discovered
恶性黑色素瘤是皮肤癌死亡的主要原因。转移性黑色素瘤的治疗仍然是一个巨大的挑战。在这项研究中,我们开发了混合化合物并研究了它们在恶性黑色素瘤化学疗法中的潜在用途。它们被设计为通过双重作用机制发挥作用,由两种药效团组成:酪氨酸硫类似物4- S-半胱氨酚(4-S-CAP,10),具有免疫调节特性和特定的黑素细胞毒性活性,以及三氮烯4,具有DNA 烷基化特性。这些化合物的设计旨在通过黑色素瘤细胞中过表达的酪氨酸酶实现选择性激活。化合物11a – e、13a和13b被发现是极好的酪氨酸酶底物 (0.5 min ≤ t 1/2 ≤ 3.7 min)。此外,还评估了衍生物11和13的分子特性、肝毒性、体内毒性特征以及黑色素瘤和非黑色素瘤细胞系中的细胞毒活性评估。将结果与替莫唑胺(一种用于黑色素瘤治疗的三氮烯)获得的结果进行了比较。结果发现,这些杂合体是选择性有效的药物,代表了开发新的多靶点黑色素瘤治