alexa Two Stage, Dual Action Cancer Therapy With Targeted Porous Silicon Nanoparticles
ISSN: 2155-952X

Journal of Biotechnology & Biomaterials
Open Access

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2nd Annual Conference and Expo on BIOMATERIALS
March 27-28, 2017 Madrid, Spain

Anna Cifuentes-Rius, Angela Ivask and Nicolas H Voelcker
Monash University, Parkville campus, Australia
National Institute of Chemical Physics and Biophysics, Estonia
ScientificTracks Abstracts: J Biotechnol Biomater
DOI: 10.4172/2155-952X.C1.073
Abstract
Despite the advances in developing efficient chemotherapy drugs, their efficacy may be diminished by the predisposition of some tumors to drug resistance and non-specific toxicity. Nanomedicine offers the possibility of tackling these key clinical challenges, by designing target delivery platforms for a combination of cancer therapies. To overcome drug resistance, we explore the synergy of hyperthermia with conventional chemotherapy. Due to the higher susceptibility of cancer cells to elevated temperatures compared to healthy cells, hyperthermia stimulates the uptake of anticancer drugs in tumor cells. Thus, nanoparticle (NP)-based delivery systems combining hyperthermia with traditional chemotherapeutics may afford the efficient treatment of highly drug-resistant tumors. Additionally, NP vectorization of therapeutics by actively targeting membrane receptors overexpressed in cancer cells has been recently suggested as a way to ensure selective delivery and improve therapeutic outcomes. Porous silicon (pSi) NPs are (i) biodegradable, (ii) suitable for conjugation with moieties for targeting of a specific cell population, and (iii) exhibit efficient loading of chemotherapy drugs. Here, we utilized these unique characteristics of pSiNPs and loaded them with multiple therapeutics while also immobilizing cell-specific antibodies to achieve active targeting. We have developed antibody functionalized pSi NP loaded with a combination of chemotherapy drug and gold nanoclusters (AuNCs). By selective targeting, these nanocarriers were observed to actively deliver both the chemotherapy drug and AuNCs to human B cells. The accumulation of AuNCs to target cells rendered them more susceptible to the co-delivered chemotherapy drug when an external electromagnetic field in the microwave region was applied. This approach represents a targeted two-stage delivery nanovector that takes advantage of dual therapeutic action in order to enhance cytotoxicity.
Biography

Anna Cifuentes-Rius is an NHMRC Early Career Fellow at the Future Industries Institute and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology. She is working in the design of three-dimensional nanoarchitectures of bioresponsive nanoparticles, containing drugs and bioactives for a range of therapeutic targets including cancer. Her interdisciplinary research is largely focused on the understanding of the biointerface of advanced bio and nano-materials for the application in the emerging field of theranostics.

Email: [email protected]

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