Application of POLARIC™ fluorophores in an in vivo tumor model

Maishi,Nako; Kawamoto,Taisuke; Ohga,Noritaka; Yamada,Koji; Akiyama,Kosuke; Yamamoto,Kazuyuki; Osawa,Takahiro; Hida,Yasuhiro; Hida,Kyoko

doi:10.3892/or.2013.2620

October 2013 Volume 30 Issue 4

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October 2013 Volume 30 Issue 4

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Article

Application of POLARIC™ fluorophores in an in vivo tumor model

Authors:
- Nako Maishi
- Taisuke Kawamoto
- Noritaka Ohga
- Koji Yamada
- Kosuke Akiyama
- Kazuyuki Yamamoto
- Takahiro Osawa
- Yasuhiro Hida
- Kyoko Hida
View Affiliations / Copyright

Affiliations: Department of Vascular Biology, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Hokkaido, Japan, Section of Materials Science, Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Hokkaido, Japan, Cardiovascular and Thoracic Surgery, Graduate School of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
Pages: 1695-1700
|
Published online on: July 18, 2013

https://doi.org/10.3892/or.2013.2620
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Abstract

Fluorescent and luminescent tools are commonly used to study the dynamics of cancer progression and metastases in real‑time. Fluorophores have become essential tools to study biological events. However, few can sustain fluorescence long enough during long-term studies. In the present study, we focused on a series of new amphiphilic fluorophores known as POLARIC™, which emit strong fluorescence in lipid bilayers and can be readily modified using the Suzuki-Miyaura cross‑coupling reaction. Appropriate chemical modifications of substituent groups can improve target-site specificity, reduce cytotoxicity and prolong emission. Therefore, in contrast to conventional fluorescent probes, these fluorophores show promise for long-term monitoring of biological processes. In the present study, we conducted long-term observations of tumor growth and metastasis using a POLARIC derivative as a novel fluorescent probe. For this purpose, we studied the metastatic melanoma cell line A375-SM, which proliferates at a high rate. We compared the characteristics of the POLARIC probe with the commercially available fluorescent dye PKH26 and fluorescent protein mRFP1. A375-SM cells were labeled with these fluorescent probes and orthotopically implanted into nude mice. The fluorescence emitted by POLARIC was detected more than five weeks after implantation without causing detectable harmful effects on tumor growth. By contrast, fluorescence of cells labeled with PKH26 could not be detected at this same time. Furthermore, POLARIC-, but not PKH26-labeled cells, were also detected in lung metastases. These results indicate that labeling cells with POLARIC fluorophores can significantly extend the time course of in vivo studies on tumor cell growth.

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Journals

International Journal of Molecular Medicine

International Journal of Oncology

Molecular Medicine Reports

Oncology Reports

Experimental and Therapeutic Medicine

Oncology Letters

Biomedical Reports

Molecular and Clinical Oncology

World Academy of Sciences Journal

International Journal of Functional Nutrition

International Journal of Epigenetics

Medicine International

Application of POLARIC™ fluorophores in an in vivo tumor model

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