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Elevated serum levels of sialyl Lewis X (sLeX) and inflammatory mediators in patients with breast cancer.


ABSTRACT: PURPOSE:The carbohydrate sialyl LewisX (sLeX) mediates cell adhesion, is critical in the normal function of immune cells, and is frequently over-expressed on cancer cells. We assessed the association, differential levels, and prognostic value of sLeX and inflammatory cytokines/chemokines in breast cancer sera. METHODS:We retrospectively measured sLeX and a panel of cytokines/chemokines in the sera of 26 non-invasive ductal carcinoma in situ (DCIS), 154 invasive non-metastatic breast cancer (non-MBC), 63 metastatic breast cancer (MBC) patients, and 43 healthy controls. Differences in sLeX and inflammatory cytokines among and between patient groups and healthy controls were assessed with nonparametric tests and we performed survival analysis for the prognostic potential of sLeX using a cut-off of 8 U/mL as previously defined. RESULTS:Median serum sLeX was significantly higher than controls for invasive breast cancer patients (MBC and non-MBC) but not DCIS. In univariate analysis, we confirmed patients with serum sLeX?>?8 U/mL have a significantly shorter progression-free survival (PFS) (P?=?0.0074) and overall survival (OS (P?=?0.0003). Similarly, patients with high serum MCP-1 and IP-10 had shorter OS (P?=?0.001 and P?

SUBMITTER: Cohen EN 

PROVIDER: S-EPMC6653624 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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<h4>Purpose</h4>The carbohydrate sialyl Lewis<sup>X</sup> (sLe<sup>X</sup>) mediates cell adhesion, is critical in the normal function of immune cells, and is frequently over-expressed on cancer cells. We assessed the association, differential levels, and prognostic value of sLe<sup>X</sup> and inflammatory cytokines/chemokines in breast cancer sera.<h4>Methods</h4>We retrospectively measured sLe<sup>X</sup> and a panel of cytokines/chemokines in the sera of 26 non-invasive ductal carcinoma in s  ...[more]

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