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相关概念视频

Leishmaniasis01:30

Leishmaniasis

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...
Antiprotozoal Agents01:21

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...

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An Efficient Method for the Synthesis of Peptoids with Mixed Lysine-type/Arginine-type Monomers and Evaluation of Their Anti-leishmanial Activity
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多尺度感知图形嵌入方法揭示了LC-61,一种强大的抗Leishmania infantum化合物.

Vinícius Alexandre Fiaia Costa1, Alexandra Maria Dos Santos Carvalho2, Rafael Consolin Chelucci3

  • 1Laboratory of Cheminformatics, Faculty of Pharmacy, Federal University of Goiás, 74605-170 Goiânia, Brazil.

Journal of chemical information and modeling
|March 17, 2026
PubMed
概括

这项研究引入了一个图形神经网络 (GNN) 框架,用于发现针对内脏莱什曼病的新药. 通过GNN方法,成功地发现了一种强大的抗莱什曼素化合物LC-61,具有有利的特性,可用于进一步开发.

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科学领域:

  • 计算化学是一种计算化学.
  • 药物发现 药物发现
  • 寄生虫学的寄生虫学

背景情况:

  • 由*Leishmania infantum*引起的内脏莱什曼病是一种致命的疾病,治疗选择有限.
  • 加快发现新型抗莱什曼药物化合物的速度至关重要.

研究的目的:

  • 开发和验证图形神经网络 (GNN) 框架,用于识别新型抗莱什曼病候选药物.
  • 选一个大型化合物库,并确定有前途的化合物.

主要方法:

  • 实施一个GNN框架,整合多层次机制,以提高预测性能.
  • 在两个抗莱什曼病数据集上对GNN的评估,显示了显著的AUC改善.
  • 对大约130万种化合物的选,以确定潜在的候选药物.

主要成果:

  • 与默认GNN相比,GNN框架在预测准确度方面取得了显著的改进.
  • 确定LC-61作为一种强大的抗莱什曼毒剂,具有纳米分子活性 (IC50=0.076μM) 和低细胞毒性 (CC50=157μM).
  • LC-61在体外表现出有利的ADME特性,包括高溶解度和平衡的脂性.

结论:

  • 该GNN框架有效地加速了新型抗莱什曼化合物的识别.
  • LC-61是一种经过验证的命中化合物,具有在内脏莱什曼病药物发现中为命中到的优化提供有希望的特性.