Department of Biology, Agriculture and Food Sciences, National Research Council (CNR), Institute of Biosciences and Bioresources, Naples, Italy.
Neurofarba Department, Pharmaceutical and Nutraceutical Section, University of Florence, Sesto Fiorentino, Italy.
J Enzyme Inhib Med Chem. 2024 Dec;39(1):2346523. doi: 10.1080/14756366.2024.2346523. Epub 2024 Jun 7.
Toxoplasmosis, induced by the intracellular parasite , holds considerable implications for global health. While treatment options primarily focusing on folate pathway enzymes have notable limitations, current research endeavours concentrate on pinpointing specific metabolic pathways vital for parasite survival. Carbonic anhydrases (CAs, EC 4.2.1.1) have emerged as potential drug targets due to their role in fundamental reactions critical for various protozoan metabolic processes. Within , the Carbonic Anhydrase-Related Protein (TgCA_RP) plays a pivotal role in rhoptry biogenesis. Notably, α-CA (TcCA) from another protozoan, , exhibited considerable susceptibility to classical CA inhibitors (CAIs) such as anions, sulphonamides, thiols, and hydroxamates. Here, the recombinant DNA technology was employed to synthesise and clone the identified gene in the genome, which encodes an α-CA protein (Tg_CA), with the purpose of heterologously overexpressing its corresponding protein. Tg_CA kinetic constants were determined, and its inhibition patterns explored with inorganic metal-complexing compounds, which are relevant for rational compound design. The significance of this study lies in the potential development of innovative therapeutic strategies that disrupt the vital metabolic pathways crucial for survival and virulence. This research may lead to the development of targeted treatments, offering new approaches to manage toxoplasmosis.
刚地弓形虫病由细胞内寄生虫引起,对全球健康具有重要意义。尽管目前的治疗方法主要集中在叶酸代谢途径的酶上,但具有显著局限性,当前的研究努力集中在确定对寄生虫生存至关重要的特定代谢途径上。碳酸酐酶(CA,EC 4.2.1.1)因其在各种原生动物代谢过程中的基本反应中发挥重要作用而成为潜在的药物靶点。在弓形虫中,Carbonic Anhydrase-Related Protein(TgCA_RP)在棒状体生物发生中起着关键作用。值得注意的是,另一种原生动物弓形虫中的α-CA(TcCA)对经典的碳酸酐酶抑制剂(CAIs),如阴离子、磺胺类、硫醇和羟肟酸,表现出相当大的敏感性。在这里,采用重组 DNA 技术合成并克隆了 基因组中鉴定出的基因,该基因编码一个α-CA 蛋白(Tg_CA),目的是异源过表达其相应的蛋白质。测定了 Tg_CA 的动力学常数,并研究了其与无机金属络合物的抑制模式,这对于合理的化合物设计很重要。这项研究的意义在于开发创新的治疗策略,破坏对弓形虫生存和毒力至关重要的关键代谢途径。这一研究可能为靶向治疗提供新的方法,为管理弓形虫病提供新的途径。
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