Volume 119, Issue 7 pp. 1710-1716
Cancer Therapy

2-Deoxy-L-ribose inhibits the invasion of thymidine phosphorylase-overexpressing tumors by suppressing matrix metalloproteinase-9

Yuichi Nakajima

Yuichi Nakajima

Department of Molecular Oncology, Field of Oncology, Course of Advanced Therapeutics,Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Japan

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Misako Haraguchi

Misako Haraguchi

Department of Molecular Oncology, Field of Oncology, Course of Advanced Therapeutics,Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Japan

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Tatsuhiko Furukawa

Tatsuhiko Furukawa

Department of Molecular Oncology, Field of Oncology, Course of Advanced Therapeutics,Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Japan

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Masatatsu Yamamoto

Masatatsu Yamamoto

Department of Molecular Oncology, Field of Oncology, Course of Advanced Therapeutics,Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Japan

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Hayao Nakanishi

Hayao Nakanishi

Division of Oncological Pathology, Aichi Cancer Center Research Institute, 1-1, Kanokoden, Chikusa-ku, Nagoya, Japan

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Masae Tatematsu

Masae Tatematsu

Division of Oncological Pathology, Aichi Cancer Center Research Institute, 1-1, Kanokoden, Chikusa-ku, Nagoya, Japan

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Shin-ichi Akiyama

Corresponding Author

Shin-ichi Akiyama

Department of Molecular Oncology, Field of Oncology, Course of Advanced Therapeutics,Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Japan

Fax: 099-265-9687.

Department of Molecular Oncology, Field of Oncology, Course of Advanced Therapeutics, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8520, JapanSearch for more papers by this author
First published: 18 July 2006
Citations: 15

Abstract

Thymidine phosphorylase (TP), an enzyme involved in pyrimidine metabolism, is identical with an angiogenic factor, platelet-derived endothelial cell growth factor. 2-Deoxy-D-ribose (D-dRib), the degradation product of thymidine generated by TP activity, has been suggested to be a downstream mediator of TP function. 2-Deoxy-L-ribose (L-dRib), a stereoisomer of D-dRib, inhibited the promotion of angiogenesis, tumor growth and metastasis by TP. In our study, we have shown that nude mice inoculated with TP-overexpressing KB/TP cells had shorter survival times than those injected with control KB/CV cells. KB/TP tumors were also more highly invasive than KB/CV tumors in mice. The expression levels of matrix metalloproteinase (MMP)-9 in KB/TP tumors were significantly higher than those in KB/CV tumors. L-dRib and a TP inhibitior, TPI, extended the survival period of KB/TP tumor-bearing mice. L-dRib also reduced MMP-9 mRNA levels in KB/TP tumors. Furthermore, L-dRib suppressed the mRNA level of MMP-9 in cultured KB/TP cells, and the invasive activity of the cells. L-dRib may be useful for the suppression of invasion of TP-expressing tumor cells. © 2006 Wiley-Liss, Inc.

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