Elevated Aurora B expression contributes to chemoresistance and poor prognosis in breast cancer

被引:2
作者
Zhang, Yiqian [1 ]
Jiang, Chunling [2 ]
Li, Huilan [1 ]
Lv, Feng [1 ]
Li, Xiaoyan [1 ]
Qian, Xiaolong [1 ]
Fu, Li [1 ]
Xu, Bo [2 ]
Guo, Xiaojing [1 ]
机构
[1] Tianjin Med Univ Canc Inst & Hosp, Dept Breast Pathol & Lab, Natl Clin Res Ctr Canc, Key Lab Breast Canc Prevent & Therapy, Tianjin 300060, Peoples R China
[2] So Res Inst, Dept Oncol, Birmingham, AL 35205 USA
基金
中国国家自然科学基金;
关键词
Aurora-B; chemoresistance; prognosis; breast cancer; PHOSPHORYLATION; KINASE; CHEMOTHERAPY; ACTIVATION; CHECKPOINT; SURVIVAL; GRADE;
D O I
暂无
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Aurora-B is a major kinase responsible for appropriate mitotic progression. Elevated expression of Aurora-B has been frequently associated with several types of cancer, including breast cancer. However, it is not clear whether the alteration contributes to tumor responses to therapies and prognosis. In this study, we conducted immunohistochemistry using antibodies against Aurora-B, S1981p-ATM, Ki67, and p53 in paraffin-embedded tumor tissues from 312 invasive breast cancer patients. The correlation between disease-free-survival (DFS) and Aurora-B expression was analyzed using the Kaplan-Meier method and log-rank test. A Cox proportional hazards regression analysis was used to determine whether Aurora-B was an independent prognostic factor for breast cancer. We found that Aurora-B expression was correlated with the proliferation index (P < 0.001) and p53 expression (P = 0.014) in breast cancer tissues. Further we found that Aurora-B expression was associated with lymph node metastasis (P = 0.002) and histological grade (P = 0.001). Multivariate analyses indicated that elevated Aurora-B expression predicted a poor survival. In a subgroup of patients that received neoadjuvant chemotherapy, we found that elevated Aurora-B contributed to chemoresistance (P = 0.011). In conclusion, elevated Aurora-B expression in breast cancer patients contributes to chemoresistance and predicts poor prognosis.
引用
收藏
页码:751 / 757
页数:7
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