基酸 Plasmodium falciparum SUB1 抑制剂,对人类蛋白质组具有提高的选择性
Chrislaine Withers-Martinez1, Elina Lidumniece2, Fiona Hackett1
1Malaria Biochemistry Laboratory, The Francis Crick Institute, London NW1 1AT, U.K.
Journal of medicinal chemistry
|July 25, 2024
概括
新的抗疟疾药物针对Plasmodium falciparum潜素类血清蛋白酶1 (PfSUB1) 显示了改善的特性. 化合物4c表现出强大的PfSUB1抑制和对疟疾寄生虫的选择性活性.
科学领域:
- 药用化学 医学化学
- 寄生虫学的寄生虫学
- 药物发现 药物发现 药物发现
背景情况:
- 疟原虫菌的细素样血清蛋白酶1 (PfSUB1) 对于疟疾寄生虫的外出至关重要.
- pfSUB1是开发新型抗疟疾药物的有希望的目标.
研究的目的:
- 为了增强PfSUB1.1.的酸抑制剂的类似药物的特性.
- 为了提高对人类蛋白质组 (H20S) 的脂友性和选择性.
主要方法:
- 对酸抑制剂的结构-活性关系 (SAR) 研究.
- 新型博拉克衍生物的合成和评估.
- 对PfSUB1抑制和对H20S的选择性进行测试.
主要成果:
- 脂友性P3侧链和N封闭组保持了Pfsub1的功效.
- 在P1位置的碳氧乙烯替代剂产生了具有改善H20S选择性的甲酸抑制剂.
- 化合物4c表现出较低的纳米级PfSUB1抑制和超过H20S的60倍选择性.
- 化合物4c对缺乏PfSUB1的P. falciparum的疗效提高了13倍.
结论:
- 酸玻酸玻拉克顿代表了一类有前途的抗疟疾药物,其向的目标是 PfSUB1.1.
- 优化P1替代剂是实现高选择性的关键.
- 化合物4c值得进一步调查,因为它是一种潜在的抗疟疾.
相关概念视频
Antiprotozoal 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...
Malaria
Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...
Antifungal Agents
Amphotericin B is a broad-spectrum antifungal agent that exploits structural differences between fungal and mammalian cell membranes. Its amphipathic structure—featuring a hydrophobic polyene-lactone ring and a hydrophilic region containing mycosamine and carboxylic acid groups—enables selective binding to ergosterol, a sterol predominantly found in fungal plasma membranes. This selective interaction underlies the drug’s antifungal activity, although weak binding to cholesterol contributes to...
Anthelminthic 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...


