以及作为抗药候选物的伊马替尼类似物的分析。

and analysis of imatinib analogues as anti- drug candidates.

作者信息

Nesic de Freitas Luca S F, da Silva Cristiane França, Intagliata Sebastiano, Amata Emanuele, Salerno Loredana, Soeiro Maria de Nazaré Correia

机构信息

Laboratório de Biologia Celular, Instituto Oswaldo Cruz, Fiocruz, RJ, Brazil.

Department of Drug and Health Sciences, Section of Medicinal Chemistry, University of Catania, Catania, Italy.

出版信息

Parasitology. 2023 Apr;150(4):359-364. doi: 10.1017/S0031182023000057. Epub 2023 Jan 12.

Abstract

Chagas disease (CD) is a neglected tropical disease caused by the intracellular protozoan that remains a serious public health issue affecting more than 6 million people worldwide. The available treatment includes 2 nitro derivatives, benznidazole (BZ) and nifurtimox, that lack in efficacy in the later chronic phase and when administered against the several naturally resistant parasite strains and present several side-effects, demanding new therapeutic options. One strategy is based on repurposing by testing drugs already used for other illness that may share similar targets. In this context, our previous data on imatinib (IMB) and derivatives motivated the screening of 8 new IMB analogues. Our findings showed that all except 1 were active against bloodstream trypomastigotes reaching drug concentration capable of inducing a 50% of parasite lysis (EC) values < 12 m after 2 h while BZ was inactive. After 24 h, all derivatives were more potent than BZ, exhibiting EC values 1.5–5.5 times lower. Against intracellular forms, 7 out of 8 derivatives presented high activity, with EC values ≤ BZ. LS2/89 stood out as one of the most promising, reaching EC values of 1.68 and 4.9 m on intracellular and trypomastigote forms, respectively, with the best selectivity index (>60) towards the proliferative forms. Physicochemical parameters as well as the absorption, distribution, metabolism, excretion and toxicity properties were predicted to be acceptable and with good chance of a favourable oral bioavailability. The promising results motivate further studies such as and combinatory assays aiming to contribute for a novel safer and effective therapy for CD.

摘要

恰加斯病(CD)是一种由细胞内原生动物引起的被忽视的热带病,仍然是一个严重的公共卫生问题,影响着全球600多万人。现有的治疗方法包括两种硝基衍生物,即苯硝唑(BZ)和硝呋替莫,它们在慢性后期以及针对几种天然耐药的寄生虫菌株时疗效不佳,并且存在多种副作用,因此需要新的治疗选择。一种策略是通过测试已用于其他疾病的药物(可能具有相似靶点)进行药物重新利用。在此背景下,我们之前关于伊马替尼(IMB)及其衍生物的数据促使我们筛选8种新的IMB类似物。我们的研究结果表明,除1种外,所有类似物对血液中的锥鞭毛体均有活性,在2小时后达到能够诱导50%寄生虫裂解(EC)值<12 μM的药物浓度,而BZ无活性。24小时后,所有衍生物的效力均高于BZ,EC值低1.5至5.5倍。针对细胞内形式,8种衍生物中有7种具有高活性,EC值≤BZ。LS2/89是最有前景的药物之一,在细胞内和锥鞭毛体形式上的EC值分别为1.68和4.9 μM,对增殖形式具有最佳的选择性指数(>60)。预测其物理化学参数以及吸收、分布、代谢、排泄和毒性特性是可接受的,并且具有良好的口服生物利用度机会。这些有前景的结果促使进行进一步的研究,如[此处原文缺失具体研究内容]和联合试验,旨在为CD开发一种新的更安全有效的疗法做出贡献。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e978/10268176/f77826aa9b37/S0031182023000057_figAb.jpg

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