Abstract:
Background:Avoiding the phagocytosis by tumor-associated macrophages (TAMs) is necessary for the growth and metastasis of solid tumors. CD47 binds to the receptor signal-regulatory protein-α (SIRP-α) on the macrophages to avoid normal phagocytosis. In this study, we evaluated the expression and prognostic significance of CD47 and CD68-labeled TAMs in breast cancer solid tumors. Methods:Two hundred seventeen cases of breast cancer tissues and 40 cases of benign breast lesions were collected for immunohistochemical staining of CD47 and CD68. Results:Both of the CD47 and CD68 expression were significantly higher in breast cancer tissues (P < 0.001), and associated with multiple clinicopathological parameters in breast cancer (P < 0.05). However, CD47 or CD68 expression alone was not an independent predictor of poor DFS in multivariate survival analysis (P > 0.05). Interestingly, combined high expression of CD47 and CD68 (CD47highCD68high) not only had a significant association with advanced TNM stage, histological grade, LNM, ER status, PR status and recurrence (P < 0.05), but also displayed a poorer 5-DFS (P = 0.011). Strikingly, CD47highCD68high served as a novel independent prognostic factor for poor DFS compared to the expression of CD47 or CD68 alone (P = 0.045). Furthermore, our study also showed for the first time that the prognostic significance of CD47highCD68high not only in breast cancer in general, but also in hormone receptor-negative breast cancer in particular. Conclusions:Combined detection of CD47 and CD68 may provide guidance for the prognosis of breast cancer, especially hormone receptor-negative breast cancer.
journal_name
Cancer Cell Intjournal_title
Cancer cell internationalauthors
Yuan J,He H,Chen C,Wu J,Rao J,Yan Hdoi
10.1186/s12935-019-0957-0subject
Has Abstractpub_date
2019-09-11 00:00:00pages
238issn
1475-2867pii
957journal_volume
19pub_type
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