Currently, molecular dynamics simulation is being widely applied to predict drug–polymer interaction, and to optimize drug delivery systems. Our study describes a combination of in silico and in vitro approaches aimed at improvement in polymer-based nanoparticle design for cancer treatment. We applied the PASS service to predict the biological activity of novel carboplatin derivatives. Subsequent molecular dynamics simulations revealed the dependence between the drug–polymer binding energy along with encapsulation efficacy, drug release profile, and the derivatives’ chemical structure. We applied ICP-MS analysis, the MTT test, and hemolytic activity assay to evaluate drug loading, antitumor activity, and hemocompatibility of the formulated nanoparticles. The drug encapsulation efficacy varied from 0.2% to 1% and correlated with in silico modelling results. The PLGA nanoparticles revealed higher antitumor activity against A549 human non-small-cell lung carcinoma cells compared to non-encapsulated carboplatin derivatives with IC50 values of 1.40–23.20 µM and 7.32–79.30 µM, respectively; the similar cytotoxicity profiles were observed against H69 and MCF-7 cells. The nanoparticles efficiently induced apoptosis in A549 cells. Thus, nanoparticles loaded with novel carboplatin derivatives demonstrated high application potential for anticancer therapy due to their efficacy and high hemocompatibility. Our results demonstrated the combination of in silico and in vitro methods applicability for the optimization of encapsulation and antitumor efficacy in novel drug delivery systems design.
目前,分子动力学模拟正被广泛应用于预测药物与聚合物之间的相互作用以及优化给药系统。我们的研究介绍了硅学和体外方法的结合,旨在改进用于癌症治疗的聚合物基纳米粒子的设计。我们应用 PASS 服务预测新型卡铂衍生物的生物活性。随后的分子动力学模拟揭示了药物与聚合物的结合能、包封效果、药物释放曲线和衍生物化学结构之间的依赖关系。我们应用 ICP-MS 分析、MTT 试验和溶血活性测定来评估所配制纳米粒子的药物负载、抗肿瘤活性和血液相容性。药物包封效果从 0.2% 到 1%不等,与硅学建模结果相关。与未包封的卡铂衍生物相比,PLGA纳米粒子对A549人非小细胞肺癌细胞具有更高的抗肿瘤活性,IC50值分别为1.40-23.20 µM和7.32-79.30 µM;对H69和MCF-7细胞也观察到类似的细胞毒性特征。纳米颗粒能有效诱导 A549 细胞凋亡。因此,负载有新型卡铂衍生物的纳米颗粒因其高效性和高血液相容性,在抗癌治疗中具有很高的应用潜力。我们的研究结果表明,在新型给药系统的设计过程中,结合硅学和体外方法可用于优化包封和抗肿瘤疗效。