4.7 Article

The clinical significance of inflammatory cytokines in primary cell culture in endometrial carcinoma

Journal

MOLECULAR ONCOLOGY
Volume 7, Issue 1, Pages 41-54

Publisher

WILEY
DOI: 10.1016/j.molonc.2012.07.002

Keywords

Endometrial carcinoma; Inflammatory cytokines; CSF-1; VEGF; Macrophages; Tumor microenvironment

Categories

Funding

  1. National Institutes of Health grant [PAR-96-012]
  2. University of New Mexico School of Medicine Research Allocations Committee grant [4-12320]
  3. University of New Mexico School of Medicine Women's Health Research Center grant [2-35647]
  4. NIH Clinical and Translational Science Award (CSTA) [1UL1RR031977-01]
  5. Albert Einstein Cancer Center Pilot Project [FRP 5-28-08]
  6. MRC [G1002033] Funding Source: UKRI
  7. Medical Research Council [G1002033] Funding Source: researchfish

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Endometrial cancer is the most common malignancy of the female genital tract, and the incidence and mortality rates from this disease are increasing. Although endometrial carcinoma has been regarded as a tissue-specific disease mediated by female sex steroid pathways, considerable evidence implicates a role for an inflammatory response in the development and propagation of endometrial cancer. We hypothesized that if specific patterns of cytokine expression were found to be predictive of adverse outcome, then selective receptor targeting may be a therapeutic option. This study was therefore undertaken to determine the relationship between cytokine production in primary cell culture and clinical outcome in endometrial adenocarcinoma. Fresh endometrial tissues were fractionated into epithelial and stromal fractions and cultured. After 6-7 days, supernatants were collected and cells enumerated. Batched aliquots were assayed using ELISA kits specific for CSF-1, GMCSF, G-CSF, TNF-alpha, IL-6, IL-8, and VEGF. Data were compared using ANOVA, Fisher's exact, and log rank tests. Increased epithelial VEGF production was observed more often in tumors with Type 2 variants (p = 0.039) and when GPR30 receptor expression was high (p = 0.038). Although increased stromal VEGF production was detected more often in grade 3 endometrioid tumors (p = 0.050), when EGFR expression was high (p = 0.003), and/or when ER/PR expression was low (p = 0.048), VEGF production did not correlated with over-all survival (OS). Increased epithelial CSF-1 and TNF-alpha production, respectively, were observed more often in tumors with deep myometrial invasion (p = 0.014) and advanced stage (p = 0.018). Increased CSF-1 (89.5% vs. 42.9%, p = 0.032), TNF-alpha (88.9% vs. 42.9%, p = 0.032, and IL-6 (92.3% vs. 61.5%, p = 0.052) also correlated with low OS. In Cox multivariate models, CSF-1 was an independent predictor of low survival when stratified by grade (p = 0.046) and histology (p = 0.050), and TNF-alpha, when stratified by histology (p = 0.037). In this study, high CSF-1, TNF-alpha, and IL-6 production rates identified patients at greatest risk for death, and may signify patients likely to benefit from receptor-specific therapy. (c) 2012 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

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