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Clinicopathological significance and prognostic value of Wilms' tumor gene expression in colorectal cancer

Article type: Research Article

Authors: Miyata, Yukinagaa; b | Kumagai, Kenichia; b | Nagaoka, Tomokoa; b | Kitaura, Kazutakab | Kaneda, Goroc | Kanazawa, Hidekic | Suzuki, Satsukid | Hamada, Yoshikia | Suzuki, Ryujib; *

Affiliations: [a] Department of Oral and Maxillofacial Surgery, School of Dental Medicine, Tsurumi University, Yokohama, Japan | [b] Department of Rheumatology and Clinical Immunology, Clinical Research Center for Rheumatology and Allergy, Sagamihara National Hospital, National Hospital Organization, Sagamihara, Japan | [c] Department of Surgery Sagamihara National Hospital, National Hospital Organization, Sagamihara, Japan | [d] Section of Biological Science Research Center for Odontology, Nippon Dental University School of Dentistry, Tokyo, Japan

Correspondence: [*] Corresponding author: Ryuji Suzuki, Department of Rheumatology and Clinical Immunology, Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, National Hospital Organization, 18-1 Sakuradai, Minami-ku, Sagamihara, Kanagawa 252-0392, Japan. Tel.: +81 42 742 8311; Fax: +81 42 742 7990; E-mail:r-suzuki@sagamihara-hosp.gr.jp

Keywords: Colorectal cancer, tumor-associated antigens, Wilms' tumor gene

DOI: 10.3233/CBM-150521

Journal: Cancer Biomarkers, vol. 15, no. 6, pp. 789-797, 2015

Published: 2015
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Abstract

BACKGROUND: Colorectal cancer (CRC) is one of the most commonly diagnosed cancers, and novel effective treatments and diagnostic tools are urgently required.

OBJECTIVE: The selection of appropriate targeting tumor-associated antigens (TAAs) is critical for immunotherapy. Therefore, we analyzed TAA expression levels and investigated their relationship with clinical factors in adjacent normal mucosa (ANM) and CRC tissue.

METHODS: We obtained specimens of CRC primary tumors and matched ANM from 137 patients with CRC who underwent surgical resection. The mRNA levels of seven TAAs, Wilms' tumor gene (WT1), kinetochore associated-2 (KNTC2), cell division cycle associated-1 (CDCA1), M phase phosphoprotein-1 (MPHOSPH1), DEP domain-containing 1 (DEPDC1), 34-kDa translocase of the outer mitochondrial membrane (TOMM34) and ring finger protein-43 (RNF43), were analyzed using quantitative real-time reverse transcription-polymerase chain reaction, and their relationships with clinicopathological factors and the cell cycle were analyzed.

RESULTS: The expression levels of all seven TAAs were significantly higher in CRC tissues than in ANM. Expression levels of WT1 in CRC tissues did not correlate with the cell cycle. Furthermore, WT1 expression in CRC tissues was significantly related to tumor progression, lymph node metastasis, distant metastasis and clinical stage.

CONCLUSIONS: WT1 is a potential marker for prognosis and tumor progression in CRC.

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