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Cancer cell–selective in vivo near infrared photoimmunotherapy targeting specific membrane molecules
Open accessAbstract
Three major modes of cancer therapy (surgery, radiation and chemotherapy) are the mainstay of modern oncologic therapy. To minimize the side effects of these therapies, molecular-targeted cancer therapies, including armed antibody therapy, have been developed with limited success. In this study, we have developed a new type of molecular-targeted cancer therapy, photoimmunotherapy (PIT), that uses a target-specific photosensitizer based on a near-infrared (NIR) phthalocyanine dye, IR700, conjugated to monoclonal antibodies (mAbs) targeting epidermal growth factor receptors. Cell death was induced immediately after irradiating mAb-IR700–bound target cells with NIR light. We observed in vivo tumor shrinkage after irradiation with NIR light in target cells expressing the epidermal growth factor receptor. The mAb-IR700 conjugates were most effective when bound to the cell membrane and produced no phototoxicity when not bound, suggesting a different mechanism for PIT as compared to conventional photodynamic therapies. Target-selective PIT enables treatment of cancer based on mAb binding to the cell membrane.
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Metadata
- Authors
- Mitsunaga, M., Ogawa, M., Kosaka, N., Rosenblum, L. T., Choyke, P. L., & Kobayashi, H.
- Venue
- Nature Medicine
- Published
- 2011-11-06
- Volume
- 17
- Issue
- 12
- Pages
- 1685-1691
- ISSN
- 1078-8956 (ISSN-L)
- 1546-170X
- OpenAlex
- W1983692618
- Cited by
- 1,057
- References
- 0
- FWCI
- 25.98
- Type
- journal article
- Language
- en
- Open access
- green
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