Anyubaga Salim Bitrus, Shallangwa Gideon Adamu, Uzairu Adamu, Abechi Stephen Eyije
Department of Chemistry Ahmadu Bello University, P.M.B. 1044, Zaria, Nigeria.
Heliyon. 2023 Dec 3;10(1):e23115. doi: 10.1016/j.heliyon.2023.e23115. eCollection 2024 Jan 15.
The quest for a sound treatment on the vulnerable population suffering and dying as a result of the blood flukes, S. mansoni is on the increase because both Praziquantel and Oxamniquine widely used for the treatment of Schistosomiasis for over 51 years suffer resistance and recurrence. Here-in, chemo-informatics techniques such as QSAR modeling, pharmacokinetic, docking alongside MD simulation were harnessed in designing novel 7-keto- sempevirolsempevirol derivatives that are more competent against S. mansoni. Upon QSAR screening, compound 15, which appears to be in the model's acceptability space, emerges the best with a high predicted activity. 5 new analogues with improved activity against Schistosomiasis better than the standard drug PZQ were designed from compound 15 (template 15*) on an account of the descriptors significance from the model with robust and validated parameters. Also their pharmacokinetic profiles indicates that the designed compounds have the characteristics of a good drug. Furthermore, docking evaluation fulfilled ranges from -113.121 to -100.79 kcal/mol (moldock score), with compound U1 being the best (least moldock score of -113.121 compared to PZQ and 15* (template) having a moldock score value of (-87.21 and -83.37 kcal/mol). 100-ns MD Simulation on the U1-docked complex was run using Desmond 2019-4 package. The nature and steadiness of U1 compound within the enzyme active site was further confirmed by RMSD, RMSF, RoG and H-bond assessment. Hence, we recommend compound U1 targeting the SmCB1 enzyme (6YI7) for Schistosomiasis treatment and for further medicinal evaluation and utilization.
由于广泛使用了51年以上的吡喹酮和奥沙尼喹都出现了耐药性和复发问题,因此,针对因曼氏血吸虫导致痛苦和死亡的脆弱人群寻求有效治疗方法的研究日益增多。在此,定量构效关系(QSAR)建模、药代动力学、对接以及分子动力学(MD)模拟等化学信息学技术被用于设计对曼氏血吸虫更有效的新型7-酮-森佩韦罗尔森佩韦罗尔衍生物。通过QSAR筛选,处于模型可接受空间内的化合物15表现最佳,具有较高的预测活性。基于模型中具有稳健且经过验证参数的描述符的重要性,从化合物15(模板15*)设计了5种对血吸虫病活性优于标准药物吡喹酮的新类似物。此外,它们的药代动力学特征表明所设计的化合物具有良好药物的特性。此外,对接评估的范围为-113.121至-100.79千卡/摩尔(模对接分数),化合物U1最佳(模对接分数最低为-113.121,相比之下,吡喹酮和15*(模板)的模对接分数值分别为-87.21和-83.37千卡/摩尔)。使用Desmond 2019-4软件包对U1对接复合物进行了100纳秒的分子动力学模拟。通过均方根偏差(RMSD)、均方根波动(RMSF)、回转半径(RoG)和氢键评估进一步证实了U1化合物在酶活性位点内的性质和稳定性。因此,我们推荐靶向曼氏血吸虫CB1酶(6YI7)的化合物U1用于血吸虫病治疗以及进一步的药物评估和应用。