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Correlation of invasion and metastasis of cancer cells, and expression of the RAD21 gene in oral squamous cell carcinoma

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Abstract

Although RAD21 is involved in the repair of double-strand breaks in DNA and is essential for mitotic growth, its role in cancer has been unclear. In this study, the relevance of RAD21 gene expression to the invasion and metastasis of oral squamous cell carcinoma was clarified using laser microdissection and real-time polymerase chain reaction (PCR). Using two different metastatic potential oral squamous cells [high-metastatic-potential squamous cell carcinoma cells (SAS-Ly) and low-metastatic-potential squamous cell carcinoma cells (SAS)], the relation of RAD21 gene expression to apoptosis, invasion, and metastasis was examined. The results showed that RAD21 gene expression was significantly decreased in oral squamous cell carcinoma when it expressed the INFβ and INFγ invasion patterns in comparison with the INFα invasion pattern (p<0.01). In addition, in comparison with SAS cells, SAS-Ly cells indicated tolerance to cell death induced by an apoptosis induction reagent, while the expression level of the RAD21 gene in SAS cells was increased by the apoptosis induction reagent. However, in SAS-Ly cells, the reagent induced no significant difference. Our findings indicate that the RAD21 gene was closely related to the invasion and metastasis of cancer cells.

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Abbreviations

DEPC:

Dietyl pyrocarbonate

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Acknowledgements

This work was supported in part by the Showa University Grant-in-Aid for Innovative Collaborative Research Projects, the High-Technology Research Center Project and Characteristic Education from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

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Authors and Affiliations

  1. Department of Oral Pathology and Diagnosis, School of Dentistry, Showa University, Hatanodai, 1-5-8, Shinagawaku, Tokyo, 142-8555, Japan

    Gou Yamamoto, Tarou Irie, Tadateru Aida, Yuuki Nagoshi, Reiko Tsuchiya & Tetsuhiko Tachikawa

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  1. Gou Yamamoto
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  2. Tarou Irie
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  3. Tadateru Aida
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  4. Yuuki Nagoshi
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  6. Tetsuhiko Tachikawa
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Correspondence to Gou Yamamoto.

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Yamamoto, G., Irie, T., Aida, T. et al. Correlation of invasion and metastasis of cancer cells, and expression of the RAD21 gene in oral squamous cell carcinoma. Virchows Arch 448, 435–441 (2006). https://doi.org/10.1007/s00428-005-0132-y

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  • DOI: https://doi.org/10.1007/s00428-005-0132-y

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