A Facile Approach for Synthesis and Intracellular Delivery of Size Tunable Cationic Peptide Functionalized Gold Nanohybrids in Cancer Cells
作者:Kavita Bansal、Mohammad Aqdas、Munish Kumar、Rajni Bala、Sanpreet Singh、Javed N. Agrewala、O. P. Katare、Rohit K. Sharma、Nishima Wangoo
DOI:10.1021/acs.bioconjchem.7b00772
日期:2018.4.18
Peptide-based drug delivery systems have become a mainstay in the contemporary medicinal field, resulting in the design and development of better pharmaceutical formulations. However, most of the available reports employ tedious multiple reaction steps for the conjugation of bioactive cationic peptides with drug delivery vehicles. To overcome these limitations, the present work describes a one-step approach for facile and time efficient synthesis of highly cationic cell penetrating peptide functionalized gold nanoparticles and their intracellular delivery. The nanoconstruct was synthesized by the reduction of gold metal ions utilizing cell penetrating peptide (CPP), which facilitated the simultaneous synthesis of metal nanoparticles and the capping of the peptide over the nanoparticle surface. The developed nanoconstruct was thoroughly characterized and tested for intracellular delivery into HeLa cells. Intriguingly, a high payload of cationic peptide over gold particles was achieved, in comparison to conventional conjugation methods. Moreover, this method also provides the ability to control the size and peptide payload of nanoparticles. The nanoconstructs produced showed enhanced cancer cell penetration (μM) and significant cytotoxic effect compared to unlabeled gold nanoparticles. Therefore, this novel approach may also have significant future potential to kill intracellular hidden dreaded pathogens like the human immunodeficiency virus, Mycobacterium tuberculosis, and so forth.
基于肽的药物输送系统已成为当代医学领域的主流,并催生了更优药物制剂的设计和开发。然而,大多数现有报告采用繁琐的多步反应步骤,将生物活性阳离子肽与药物输送载体偶联。为了克服这些局限性,本研究描述了一种一步法,用于简便、快速地合成高阳离子细胞穿透肽功能化金纳米粒子及其细胞内递送。该纳米结构是通过利用细胞穿透肽(CPP)还原金金属离子合成的,这有助于同时合成金属纳米粒子和肽在纳米粒子表面的封端。对所开发的纳米结构进行了全面的表征和测试,以确定其是否能够递送到HeLa细胞中。有趣的是,与传统的偶联方法相比,金粒子上阳离子肽的有效载荷很高。此外,这种方法还可以控制纳米粒子的尺寸和肽的有效载荷。与未标记的金纳米粒子相比,所制备的纳米结构显示出更强的癌细胞穿透性(μM)和显著的细胞毒性作用。因此,这种新颖的方法在未来可能也有很大的潜力,可用于杀死细胞内隐藏的可怕病原体,如人类免疫缺陷病毒、结核分枝杆菌等。