Expression of IL-1α and IL-6 is Associated with Progression and Prognosis of Human Cervical Cancer

Med Sci Monit. 2016 Nov 20:22:4475-4481. doi: 10.12659/msm.898569.

Abstract

BACKGROUND IL-1α and IL-6 are associated with the prognosis of a wide range of cancers, but their value in cervical cancer remains controversial. The aim of this study was to investigate the expression of IL-1α and IL-6 in cervical cancer and their significance in clinical prognosis. MATERIAL AND METHODS The expression of IL-1α and IL-6 in 105 formalin-fixed, paraffin-embedded cervical cancer tissues and adjacent non-tumor tissues was examined by immunohistochemistry. The results were semi-quantitatively scored and analyzed by chi-square test. Patient overall survival (OS) data was collected by follow-up and analyzed by Kaplan-Meier analysis. RESULTS The expression level of both IL-1α and IL-6 in cervical cancer tissue was higher than in adjacent non-tumor tissues (p<0.05). IL-1α expression was shown to be correlated with tumor size, FIGO histology grade, lymph node metastasis, stromal invasion, and tumor differentiation (p<0.05). IL-6 expression was shown to be correlated with tumor size, FIGO histology grade, and tumor differentiation (p<0.05). Patients with positive expression of IL-1α or IL-6 tended to have much shorter survival times than patients with negative expression. In addition, a multivariate Cox regression analysis demonstrated that IL-1α expression and lymph node metastasis were independent predictors of OS in cervical cancer patients. CONCLUSIONS The expression of IL-1α was significantly associated with tumor size, FIGO histology grade, lymph node metastasis, stromal invasion, and tumor differentiation. The expression of IL-6 was significantly associated with tumor size, FIGO histology grade, and tumor differentiation. Positive IL-1α and IL-6 expression was significantly correlated with poor prognosis. They may be considered valuable biomarkers for prognosis and potential therapeutic targets for cervical cancer.

MeSH terms

  • Adult
  • Aged
  • Biomarkers, Tumor / biosynthesis*
  • Biomarkers, Tumor / genetics
  • Disease Progression
  • Female
  • Humans
  • Immunohistochemistry
  • Interleukin-1alpha / biosynthesis*
  • Interleukin-1alpha / genetics
  • Interleukin-6 / biosynthesis*
  • Interleukin-6 / genetics
  • Kaplan-Meier Estimate
  • Lymphatic Metastasis
  • Middle Aged
  • Neoplasm Staging
  • Prognosis
  • Uterine Cervical Neoplasms / genetics
  • Uterine Cervical Neoplasms / metabolism*
  • Uterine Cervical Neoplasms / pathology

Substances

  • Biomarkers, Tumor
  • IL1A protein, human
  • IL6 protein, human
  • Interleukin-1alpha
  • Interleukin-6