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计算探索可逆转早衰症核形态的先导化合物。

Computational Exploration for Lead Compounds That Can Reverse the Nuclear Morphology in Progeria.

机构信息

Division of Applied Life Science (BK21 Plus), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Systems and Synthetic Agrobiotech Center (SSAC), Research Institute of Natural Science (RINS), Gyeongsang National University (GNU), 501 Jinju-daero, Jinju 52828, Republic of Korea.

College of Pharmacy, Inje University, 197 Inje-ro, Gimhae, Gyeongnam 50834, Republic of Korea.

出版信息

Biomed Res Int. 2017;2017:5270940. doi: 10.1155/2017/5270940. Epub 2017 Oct 26.

Abstract

Progeria is a rare genetic disorder characterized by premature aging that eventually leads to death and is noticed globally. Despite alarming conditions, this disease lacks effective medications; however, the farnesyltransferase inhibitors (FTIs) are a hope in the dark. Therefore, the objective of the present article is to identify new compounds from the databases employing pharmacophore based virtual screening. Utilizing nine training set compounds along with lonafarnib, a common feature pharmacophore was constructed consisting of four features. The validated Hypo1 was subsequently allowed to screen Maybridge, Chembridge, and Asinex databases to retrieve the novel lead candidates, which were then subjected to Lipinski's rule of 5 and ADMET for drug-like assessment. The obtained 3,372 compounds were forwarded to docking simulations and were manually examined for the key interactions with the crucial residues. Two compounds that have demonstrated a higher dock score than the reference compounds and showed interactions with the crucial residues were subjected to MD simulations and binding free energy calculations to assess the stability of docked conformation and to investigate the binding interactions in detail. Furthermore, this study suggests that the Hits may be more effective against progeria and further the DFT studies were executed to understand their orbital energies.

摘要

早衰症是一种罕见的遗传性疾病,其特征是过早衰老,最终导致死亡,并在全球范围内受到关注。尽管这种疾病的情况令人担忧,但目前仍缺乏有效的药物治疗方法;然而,法尼基转移酶抑制剂(FTIs)是黑暗中的一线希望。因此,本文的目的是从数据库中利用基于药效团的虚拟筛选来识别新的化合物。使用 9 个训练集化合物以及 lonafarnib,构建了一个包含四个特征的常见特征药效团。随后,经过验证的 Hypo1 被允许筛选 Maybridge、Chembridge 和 Asinex 数据库,以检索新的先导候选物,然后对这些候选物进行 Lipinski 的 5 规则和 ADMET 评估,以确定其是否具有类药性。获得的 3372 个化合物被提交给对接模拟,并对与关键残基的关键相互作用进行了手动检查。两个化合物的对接评分均高于对照化合物,并与关键残基相互作用,随后进行 MD 模拟和结合自由能计算,以评估对接构象的稳定性,并详细研究结合相互作用。此外,这项研究表明,这些“命中化合物”可能对早衰症更有效,进一步的密度泛函理论(DFT)研究也被执行,以了解它们的轨道能量。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc30/5684607/cd3482bb1ee7/BMRI2017-5270940.001.jpg

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