Solorio Luis, Wu Hanping, Hernandez Christopher, Gangolli Mihika, Exner Agata A
Department of Chemical Engineering, University of Michigan, 2300 Hayward St, Ann Arbor, MI 48109, USA.
Case Center for Imaging Research, Department of Radiology, Case Western Reserve University, 11100 Euclid Ave, Cleveland, OH 44106-5056, USA.
Ther Deliv. 2016;7(4):201-12. doi: 10.4155/tde-2015-0008.
Hepatocellular carcinomas are frequently nonresponsive to systemically delivered drugs. Local delivery provides an alternative to systemic administration, maximizing the dose delivered to the tumor, achieving sustained elevated concentrations of the drug, while minimizing systemic exposure.
Ultrasound-guided deposition of doxorubicin (Dox)-eluting in situ forming implants (ISFI) in an orthotopic tumor model significantly lowers systemic drug levels. As much as 60 µg Dox/g tumors were observed 21 days after ISFI injection. Tumors treated with Dox implants also showed a considerable reduction in progression at 21 days.
Dox-eluting ISFIs provide a promising platform for the treatment of hepatocellular carcinomas by which drug can be delivered directly into the lesion, bypassing distribution and elimination by the circulatory system.
肝细胞癌通常对全身给药的药物无反应。局部给药是全身给药的一种替代方法,可使递送至肿瘤的剂量最大化,实现药物浓度持续升高,同时将全身暴露降至最低。
在原位肿瘤模型中,超声引导下阿霉素(Dox)洗脱原位形成植入物(ISFI)的沉积显著降低了全身药物水平。ISFI注射后21天,观察到肿瘤中Dox含量高达60μg/g。用Dox植入物治疗的肿瘤在21天时进展也显著降低。
Dox洗脱ISFI为肝细胞癌的治疗提供了一个有前景的平台,通过该平台药物可直接递送至病变部位,绕过循环系统的分布和消除。