一种新型氯喹-普马喹啉金(I)杂化物:多靶点、多相抗疟药物。
A Novel Hybrid of Chloroquine and Primaquine Linked by Gold(I): Multitarget and Multiphase Antiplasmodial Agent.
机构信息
Departamento de Química, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer, s/n - Campus Universitário, Bairro Martelos, CEP 36036-900, Juiz de Fora, Minas Gerais, Brasil.
Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Av. Waldemar Falcão, 121, Candeal, Salvador, Bahia, Brasil.
出版信息
ChemMedChem. 2021 Feb 17;16(4):662-678. doi: 10.1002/cmdc.202000653. Epub 2020 Nov 24.
Plasmodium parasites kill 435 000 people around the world every year due to unavailable vaccines, a limited arsenal of antimalarial drugs, delayed treatment, and the reduced clinical effectiveness of current practices caused by drug resistance. Therefore, there is an urgent need to discover and develop new antiplasmodial candidates. In this work, we present a novel strategy to develop a multitarget metallic hybrid antimalarial agent with possible dual efficacy in both sexual and asexual erythrocytic stages. A hybrid of antimalarial drugs (chloroquine and primaquine) linked by gold(I) was synthesized and characterized by spectroscopic and analytical techniques. The CQPQ-gold(I) hybrid molecule affects essential parasite targets, it inhibits β-hematin formation and interacts moderately with the DNA minor groove. Its interaction with PfTrxR was also examined in computational modeling studies. The CQPQ-gold(I) hybrid displayed an excellent in vitro antimalarial activity against the blood-stage of Plasmodium falciparum and liver-stage of Plasmodium berghei and efficacy in vivo against P. berghei, thereby demonstrating its multiple-stage antiplasmodial activity. This metallic hybrid is a promising chemotherapeutic agent that could act in the treatment, prevention, and transmission of malaria.
疟原虫每年在全球导致 43.5 万人死亡,原因是缺乏疫苗、抗疟药物种类有限、治疗延误以及耐药性导致现有治疗方法的临床效果降低。因此,迫切需要发现和开发新的抗疟候选药物。在这项工作中,我们提出了一种新的策略,即用金(I)连接的抗疟药物(氯喹和伯氨喹)合成一种新型多靶金属杂化抗疟剂,可能在有性和无性红细胞阶段具有双重功效。通过光谱和分析技术对 CQPQ-金(I)杂化分子进行了表征。该杂化分子可影响寄生虫的关键靶标,抑制β-疟色素的形成,并与 DNA 小沟适度相互作用。还通过计算建模研究检查了其与 PfTrxR 的相互作用。该 CQPQ-金(I)杂化分子在体外对恶性疟原虫的血期和伯氏疟原虫的肝期表现出极好的抗疟活性,体内对伯氏疟原虫也具有疗效,从而证明了其多阶段抗疟活性。这种金属杂化物是一种很有前途的化疗药物,可用于治疗、预防和传播疟疾。