Aurora-B overexpression is correlated with aneuploidy and poor prognosis in non-small cell lung cancer

Masafumi Takeshita, Takaomi Koga, Koichi Takayama, Kayo Ijichi, Tokujiro Yano, Yoshihiko Maehara, Yoichi Nakanishi, Katsuo Sueishi

研究成果: ジャーナルへの寄稿学術誌査読

61 被引用数 (Scopus)


Aurora-B is a key regulator of mitosis, and the overexpression has been detected in a variety of solid tumors. The Aurora-B overexpression has been suggested to correlate with clinical aggressiveness and aneuploidy in vitro, however, the frequency of overexpression of Aurora-B protein, the association with clinicopathologic parameters and aneuploidy remain poorly defined in non-small-cell lung cancer (NSCLC). Using 157 surgical specimens of human NSCLC, we here show that overexpression of Aurora-B proteins are significantly correlated with aneuploidy and poor outcomes in NSCLC. We examined immunohistochemical protein expression of Aurora-B, and DNA ploidy by laser scanning cytometry in 157 NSCLC cases. Aurora-B overexpression was found in 83 cases (53%) of NSCLC, and was significantly correlated with vascular invasion (p=0.012), poor differentiation (p<0.001), larger tumor size (p=0.010) and lymph node metastasis (p=0.05) and poor prognosis (p=0.011). Aneuploidy was found in 87 cases (57%), and was significantly correlated with Aurora-B overexpression (p=0.0065). Logistic multivariate analysis revealed overexpression of Aurora-B protein to be significant risk factors for aneuploidy compared with other factors. These results indicate that Aurora-B overexpression may contribute to malignant potential and increased aneuploidy in NSCLC. Thus, Aurora-B may serve as a new therapeutic target in against patients with NSCLC, although further studies will be necessary.

ジャーナルLung Cancer
出版ステータス出版済み - 4月 2013

!!!All Science Journal Classification (ASJC) codes

  • 腫瘍学
  • 呼吸器内科
  • 癌研究


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