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Assessment of Therapeutic Efficacy of Liposomal Nanoparticles Mediated Gene Delivery by Molecular Imaging for Cancer Therapy

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The inadequate treatment efficacy, suboptimal cancer detection and disease monitoring in anticancer therapies have led to the quest for clinically relevant, innovative multifaceted solutions such as development of targeted and traceable approaches. Molecular imaging technologies with the versatility of liposomal nanoparticles platform offer tangible options to better guide treatment delivery and monitor outcome. In this study, we introduced noninvasive, quantitative and functional imaging techniques with reporter gene methods to probe breast cancer processes with liposomal nanoparticles by bioluminescence imaging (BLI). A breast cancer model was applied for therapy by injecting 5.0 × 105 4T1 cells carrying a reporter system encoding a double fusion reporter gene consisting of firefly luciferase (Fluc) and green fluorescent protein (GFP) into BALB/c mice. Liposomal nanoparticles loaded with a triple fusion gene containing the herpes simplex virus truncated thymidine kinase (HSV-ttk) and renilla luciferase (Rluc) and red fluorescent protein (RFP) were applied by in situ injection for monitoring and evaluating gene therapy. The BALB/c mice were subsequently treated with ganciclovir (GCV) and the growth status of tumor was monitored by bioluminescence imaging of Fluc and the treatment delivery of liposomal nanoparticle was efficiently tracked by Rluc imaging. In fact, TF plasmids were shown to be useful for monitoring and evaluating targeting efficacy and gene therapy by non-invasive molecular imaging. In conclusion, the combination of noninvasive imaging techniques and liposomal nanoparticle can provide a practical and clinically useful way for gene delivery and monitoring the level of gene expression over time and treatment response in patients undergoing gene therapy.
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Keywords: BIOLUMINESCENCE IMAGING; CANCER THERAPY; GENE DELIVERY; LIPOSOMAL NANOPARTICLE; MOLECULAR IMAGING

Document Type: Research Article

Publication date: October 1, 2012

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  • Journal of Biomedical Nanotechnology (JBN) is a peer-reviewed multidisciplinary journal providing broad coverage in all research areas focused on the applications of nanotechnology in medicine, drug delivery systems, infectious disease, biomedical sciences, biotechnology, and all other related fields of life sciences.
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