When eIF4E, histological grade, tumor stage, ER, PR, Her-2 status and the levels of VEGF, IL-8, MVD were included in a multivariate Cox regression analysis, eIF4E emerged as an independent prognostic factor for breast cancer (P = 0.001), along with stage (P = 0.005), node status (P = 0.046), and MVD (P = 0.004).
We observed a positive correlation between integrin β3 and IL-8 expression, which was inversely correlated with ER status in breast cancer cell lines and tissues.
We have also cloned human IL-8 from ER-negative MDA-MB-231 cells, and we show that IL-8 produced by breast cancer cells is identical to monocyte-derived IL-8.
We also found that expression of KISS1 in human breast tumor specimens inversely correlates with that of MMP9 and IL8, implicated in the mechanism of metastatic invasion, thereby supporting the role of KISS1 as a potential regulator of BrCa metastatic invasion in the brain.
Two breast cancer cell lines (MCF7 and T47D) secreted lower basal levels of IL-8 (48-80 pg/ml/10,000 cells), compared with ovarian cancer cells (200-500 pg/ml/10,000 cells).
Thus, we conclude that miR-520b is involved in regulating breast cancer cell migration by targeting HBXIP and IL-8 via a network in which HBXIP promotes migration by stimulating NF-κB-mediated IL-8 expression.
This study clarifies the role and mechanism of bufalin action during PKC regulation of COX-2/IL-8 expression and investigates the associated impact on breast cancer.
These studies show for the first time that EpCAM can modulate NF-κB transcription factor activity and IL-8 expression in breast cancer and confirm the role of EpCAM signaling in modulating breast cancer invasion.
These findings reveal for the first time that: a) Enhanced synthesis and secretion of members of the IL-8/GRO chemokine family, which have recently been linked to oestrogen receptor (ER) inaction, increased cell invasion and angiogenesis, may represent a new pathway involved in the metastatic progression and endocrine resistance of HER2-overexpressing breast carcinomas, and b) Circulating levels of IL-8 and GRO cytokines may represent novel biomarkers monitoring breast cancer responses to endocrine treatments and/or HER2-targeted therapies.
Therefore, we propose that cytokines such as IL-8 are involved in the early stages of breast cancer metastasis and initiate the process of osteoclastic bone resorption.
The results revealed a significant increase (p < 0.0001) in VEGF, CRP, IL-6, and IL-8 in breast cancer patients with or without metastasis as compared to the healthy group.
The present study demonstrated that higher CXCL8 mRNA levels in breast cancer tissues together with estrogen receptor negativity was associated with significantly shorter OS, and could be applied as a negative risk factor for 10-year OS.
The independent activities of EGF and estrogen on CXCL8 transcription reinforce the need to introduce simultaneous targeting of ErbBs and ERα to achieve effective therapy in breast cancer.
The ensuing Slug-dependent serine 139 phosphorylation of the DNA damage sensor H2AX in breast cancer stem cells induces tumor necrosis factor-α and IL-8 mRNAs, whose stability is enhanced by cytoplasmic β-catenin.
The aim of this study was to investigate the roles of serum interleukin-6 (IL-6), IL-8, IL-10, squamous cell cancer antigen (SCC-Ag), and cytokeratin 21-1 fragment (CYFRA 21-1) in the metastasis and prognosis of breast cancer.A total of 534 breast cancer patients admitted to our department between January 2011 and December 2014 were enrolled in this study.
The aim of this study was to clarify the role and acting mechanism of glucosamine during the PKC-regulation of COX-2/IL-8 expression and the associated impact on breast cancer.
Since the pro-inflammatory cytokines IL-6 and IL-8 are consistently present in the SASP, and secreted by highly aggressive breast cancer cell lines, we aimed at elucidating their role on the less aggressive breast cancer cell line MCF-7, which does not secret these cytokines.
Serum cytokine levels of interleukin-1beta, -6, -8, tumour necrosis factor-alpha and vascular endothelial growth factor in breast cancer patients treated with tamoxifen and supplemented with co-enzyme Q(10), riboflavin and niacin.
Real-time RT-PCR and ELISA were employed to determine the mRNA and protein expression of IL-6 and IL-8 in highly metastatic human breast cancer cell line, MDA-MB-231.