4.2 Article

Amine-Functionalized Silica Nanoparticles with Drug and Gene Co-Delivery for Anti-Angiogenesis Therapy of Breast Cancer

Journal

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 18, Issue 4, Pages 2379-2386

Publisher

AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2018.14541

Keywords

Silica Nanoparticles; Breast Cancer; Co-Delivery; Anti-Angiogenesis Therapy

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In our study, we report on the design and characterization of a combined angiogenesis therapy for breast cancer based on well-formed amine-functionalized silica nanoparticles (SLNs). The amine-functionalized SLNs was employed to simultaneously deliver angiostatin (ANG) plasmid and candesartan (CD) to the same cancer cell. The well-formed ANG/CD/SLNs exhibited small particle size, reasonable positive charges, excellent loading of drug and gene in vitro. Moreover, amine-functionalized SLNs were almost no cytotoxicity. ANG/CD/SLNs resulted in enhanced gene transfection compared to naked plasmid. More importantly, ANG/CD/SLNs as a co-delivery system achieved a stronger inhibitory effect on angiogenesis in vitro, possibly resulting from significant downregulation of vascular endothelial growth factor (VEGF) expression via different pathways. In particular, in vivo investigation on nude mice bearing MCF-7 xenografts confirmed that ANG/CD/SLNs co-delivery system exerted strong anti-tumor efficacy by synergistic antiangiogenic mechanism.

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