Abstract

Objective To study the expression and clinical significance of FoxM1 and Cep55 protein in basal-like breast carcinoma (BLBC).Methods The expression of FoxM1 and Cep55 protein in 66 cases of BLBC,70 cases of non-BLBC and 66 cases of normal adjacent breast tissue were detected by immunohistochemistry.Their relationship with the clinical pathological factors was analyzed.Results The positive rate of FoxM1 protein in BLBC,non-BLBC and normal adjacent breast tissue was 77.3％ (51/66),60.0％(42/70) and 13.6％(9/66),Cep55 protein was 74.2％(49/66),57.1％(40/70) and 16.7％(11/66),respectively.BLBC and non-BLBC tissue were higher than normal adjacent breast tissue,and BLBC tissue was higher than non-BLBC,there was significant difference (P ＜0.05).In BLBC tissue,the positive expression of FoxM1 and Cep55 protein correlated with lymph nodes metastasis and TNM staging (P ＜0.05),while did not correlate with age,menopause,tumor size (P ＞ 0.05).There was direct correlation between the positive expression of FoxM1 and Cep55 protein (r =0.259,P ＜ 0.05).Conclusion FoxM1 and Cep55 protein may play an important role in the carcinogenesis and development of BLBC,and both of them have the synergistic effect. Key words: Breast neoplasms; FoxM1 protein; Cep55 protein

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