The role of vascular CXCR4 expression in colorectal carcinoma

Histopathology
Barbara IngoldChristoph Röcken

Abstract

The chemokine receptor CXCR4 plays a prominent role in the biology of many different tumours, promoting angiogenesis and metastasis. The impact of CXCR4 expression on tumour biology has been described in various gastrointestinal malignancies, but data on its in situ expression and clinicopathological correlations are sparse. Using a novel specific rabbit anti-CXCR4 antibody, the aim was to assess CXCR4 expression immunohistochemically on tissue microarrays generated from 402 colorectal cancers (CRCs) and compare it with CXCL12 expression and various clinicopathological parameters. CXCR4-expressing tumour cells were observed in 31% of the cases, and expression correlated only with blood vessel invasion (P = 0.049). Furthermore, CXCR4 was found in tumour microvessels in 25% of CRCs. This pattern of CXCR4 expression correlated significantly with T- (P = 0.008), N- (P = 0.009), M- (P = 0.043), L- (P = 0.014) and V-category (P = 0.043) as well as with International Union Against Cancer (UICC) stage (P = 0.001). Furthermore, in node negative CRCs, vascular CXCR4 expression was an independent adverse prognostic factor [hazard ratio 2.87 (1.31-6.29), P = 0.009]. No correlation with CXCL12 expression was found. Our data provide evidence...Continue Reading

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Citations

Feb 26, 2011·Journal of Translational Medicine·Claudia RubieMartin K Schilling
Mar 11, 2015·Proteomics. Clinical Applications·Lucy JankovaStephen J Clarke
Mar 10, 2012·Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie·Zhenqian WuYu Wang
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