对Leishmania主要核酸酸酶进行比较分析,以选择多目标策略
Samaneh Farhadi1, Mohammad Taghizadeh2, Neda Mousavi-Niri1
1Biotechnology Department, Faculty of Advanced Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, 1916893813, Iran.
Acta parasitologica
|December 12, 2023
概括
莱什曼尼亚寄生虫缺乏 purin 生产,使核酸酸酶 (NHs) 成为药物点. 这项研究模拟了Leishmania三种主要NH类型,揭示了显著的结构差异,并提出了针对Leishmaniasis的多目标药物策略.
科学领域:
- 寄生虫学的寄生虫学
- 结构生物学 结构生物学
- 药物发现 药物发现 药物发现
背景情况:
- 莱什曼尼亚寄生虫引起莱什曼尼亚病,并依赖外部核酸来源进行纯素合成.
- 核酸酸酶 (NHs) 对于莱什马尼亚的纯素救援至关重要,并且代表着有前途的药物标.
- NHs表现出多种不同的基质偏好 (SP) 类型,影响它们在 purin代谢中的作用.
研究的目的:
- 为了建模和比较分析三个基质偏好的类型的莱什马尼亚主要核酸酸酶 (NHs) 的蛋白质结构.
- 调查这些NH类型中基质结合口袋的结构差异.
- 为了告知多目标药物设计策略,用于打击莱什曼病.
主要方法:
- 使用 SWISS-MODEL 和 LOMETS 来进行莱什马尼亚主要NH酶的结构建模.
- 创建了24个结构模型,用于偏好NH (IUNH),偏好NH (IGNH) 和偏好NH (IAGNH) 的 inosine-uridine-guanosine.
- 评估并完成了三种酶结构,用于对基质结合口袋的详细分析.
主要成果:
- 三种Leishmania主要的NH SP类型在基质结合口袋中的序列,结构和残留相互作用中表现出显著的分歧.
- 为这三个NH类型生成并比较了新的结构模型.
- 这项研究强调了分析的NH酶之间的实质性结构区别.
结论:
- 以前,只有莱什马尼亚的IUNH被结构性地研究用于药物设计.
- IUNH,IGNH和IAGNH的独特结构特征表明它们作为药物点的作用和潜力各不相同.
- 提出了一项涉及所有三种NHSP类型的多目标战略,以加强抗莱什曼病药物开发.
相关概念视频
01:30Leishmaniasis
Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...
01:15Anthelminthic Agents
Anthelmintic drugs differ significantly from antiparasitic therapies targeting protozoa, primarily due to differences in parasite biology. Whereas most protozoal treatments act on proliferating cells, anthelmintics are typically directed against mature, nonproliferative helminths. The therapeutic approach considers the helminth's reliance on neuromuscular coordination, glucose metabolism, and microtubular integrity for survival, reproduction, and localization within the host. Most anthelmintics...
01:21Antiprotozoal Agents
Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...