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Proceedings Paper

Optical imaging of RNAi-mediated silencing of cancer
Author(s): Takahiro Ochiya; Kimi Honma; Fumitaka Takeshita; Shunji Nagahara
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Paper Abstract

RNAi has rapidly become a powerful tool for drug target discovery and validation in an in vitro culture system and, consequently, interest is rapidly growing for extension of its application to in vivo systems, such as animal disease models and human therapeutics. Cancer is one obvious application for RNAi therapeutics, because abnormal gene expression is thought to contribute to the pathogenesis and maintenance of the malignant phenotype of cancer and thereby many oncogenes and cell-signaling molecules present enticing drug target possibilities. RNAi, potent and specific, could silence tumor-related genes and would appear to be a rational approach to inhibit tumor growth. In subsequent in vivo studies, the appropriate cancer model must be developed for an evaluation of siRNA effects on tumors. How to evaluate the effect of siRNA in an in vivo therapeutic model is also important. Accelerating the analyses of these models and improving their predictive value through whole animal imaging methods, which provide cancer inhibition in real time and are sensitive to subtle changes, are crucial for rapid advancement of these approaches. Bioluminescent imaging is one of these optically based imaging methods that enable rapid in vivo analyses of a variety of cellular and molecular events with extreme sensitivity.

Paper Details

Date Published: 13 February 2008
PDF: 11 pages
Proc. SPIE 6868, Small Animal Whole-Body Optical Imaging Based on Genetically Engineered Probes, 68680H (13 February 2008); doi: 10.1117/12.774484
Show Author Affiliations
Takahiro Ochiya, National Cancer Ctr. Research Institute (Japan)
Kimi Honma, National Cancer Ctr. Research Institute (Japan)
Koken Bioscience Co., Ltd. (Japan)
Fumitaka Takeshita, National Cancer Ctr. Research Institute (Japan)
Shunji Nagahara, Dainippon Sumitomo Pharma Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 6868:
Small Animal Whole-Body Optical Imaging Based on Genetically Engineered Probes
Alexander P. Savitsky; Robert E. Campbell; Robert M. Hoffman, Editor(s)

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