Kesharwani Prashant, Banerjee Sanjeev, Padhye Subhash, Sarkar Fazlul H, Iyer Arun K
Use-inspired Biomaterials & Integrated Nano Delivery (U-BiND) Systems Laboratory, Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, 259 Mack Ave, Detroit, MI 48201, USA.
Department of Pathology, Barbara Ann Karmanos Cancer Institute, Wayne State University, School of Medicine, 740 HWCRC, Detroit, MI 48201, USA.
Colloids Surf B Biointerfaces. 2015 Aug 1;132:138-45. doi: 10.1016/j.colsurfb.2015.05.007. Epub 2015 May 14.
Pancreatic cancer remains one of the most devastating diseases in terms of patient mortality rates for which current treatment options are very limited. 3,4-Difluorobenzylidene curcumin (CDF) is a nontoxic analog of curcumin (CMN) developed in our laboratory, which exhibits extended circulation half-life, while maintaining high anticancer activity and improved pancreas specific accumulation in vivo, compared with CMN. CDF however has poor aqueous solubility and its dose escalation for systemic administration remains challenging. We have engineered self-assembling nano-micelles of amphiphilic styrene-maleic acid copolymer (SMA) with CDF by non-covalent hydrophobic interactions. The SMA-CDF nano-micelles were characterized for size, charge, drug loading, release, serum stability, and in vitro anticancer activity. The SMA-CDF nano-micelles exhibited tunable CDF loading from 5 to 15% with excellent aqueous solubility, stability, favorable hemocompatibility and sustained drug release characteristics. The outcome of cytotoxicity testing of SMA-CDF nano-micelles on MiaPaCa-2 and AsPC-1 pancreatic cancer cell lines revealed pronounced antitumor response due to efficient intracellular trafficking of the drug loaded nano-micelles. Additionally, the nano-micelles are administrable via the systemic route for future in vivo studies and clinical translation. The currently developed SMA based nano-micelles thus portend to be a versatile carrier for dose escalation and targeted delivery of CDF, with enhanced therapeutic margin and safety.
就患者死亡率而言,胰腺癌仍然是最具毁灭性的疾病之一,目前的治疗选择非常有限。3,4-二氟亚苄基姜黄素(CDF)是我们实验室开发的姜黄素(CMN)的无毒类似物,与CMN相比,它具有更长的循环半衰期,同时在体内保持高抗癌活性并改善胰腺特异性蓄积。然而,CDF的水溶性较差,全身给药的剂量递增仍然具有挑战性。我们通过非共价疏水相互作用设计了两亲性苯乙烯-马来酸共聚物(SMA)与CDF的自组装纳米胶束。对SMA-CDF纳米胶束的大小、电荷、载药量、释放、血清稳定性和体外抗癌活性进行了表征。SMA-CDF纳米胶束表现出5%至15%的可调CDF载药量,具有优异的水溶性、稳定性、良好的血液相容性和持续的药物释放特性。SMA-CDF纳米胶束对MiaPaCa-2和AsPC-1胰腺癌细胞系的细胞毒性测试结果显示,由于载药纳米胶束的有效细胞内转运,产生了明显的抗肿瘤反应。此外,纳米胶束可通过全身途径给药,用于未来的体内研究和临床转化。因此,目前开发的基于SMA的纳米胶束有望成为一种通用载体,用于CDF的剂量递增和靶向递送,具有更高的治疗优势和安全性。
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