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Xu, Han; Lin, Fengjuan; Wang, Ziliang; Yang, Lina; Meng, Jiao; Ou, Zhouluo; Shao, Zhimin; Di, Genhong; Yang, Gong
Cancer letters, 01/2018, Letnik: 412Journal Article
Metastasis and chemoresistance are two major causes of breast cancer death. We show here that the chemokine receptor CXCR2 was overexpressed in breast cancer cell lines and tissues. CXCR2 promoted anti-apoptosis, anti-senescence, and epithelial-to-mesenchymal transition (EMT) of breast cancer cells, leading to the enhanced metastasis and chemoresistance. Further study suggested that AKT1 and cyclooxygenase-2 (COX2; PTGS2) might mediate the CXCR2 signaling to inversely control the breast cancer metastasis and chemoresistance through the regulation of EMT, apoptosis, and senescence. Analyses of clinical data indicate that the high expression of CXCR2 was correlated with the high expression of COX2 and the low expression of AKT1, P85α, E-cadherin, and β-catenin in cancer tissues. Poor outcomes were associated with the high expression of CXCR2 or COX2 while favorable survivals were associated with the high expression of P85α, AKT1, or E-cadherin in all cancer patients. Cox multivariate analysis demonstrated that CXCR2, COX2, and AKT1 could be independent predictors for disease free survivals. All these data suggest that CXCR2 promotes breast cancer metastasis and chemoresistance via suppressing AKT1 and activating COX2. Thus, antagonists of the CXCR2 signaling molecules may be used to treat breast cancer patients particularly with high metastasis and chemoresistance. •CXCR2 promotes breast cancer metastasis and chemoresistance in vitro and in vivo.•The mechanism relies on suppression of AKT1 and induction of COX2.•Cox multivariate analysis shows that CXCR2, COX2, and AKT1 could be independent prognostic factors.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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