Open Access

CXCL5 expression in tumor tissues is associated with poor prognosis in patients with pancreatic cancer

  • Authors:
    • Bin Wu
    • Jing Wang
    • Xiaoguang Wang
    • Mingyuan Zhu
    • Fei Chen
    • Yiyu Shen
    • Zhengxiang Zhong
  • View Affiliations

  • Published online on: September 18, 2020     https://doi.org/10.3892/ol.2020.12120
  • Article Number: 257
  • Copyright: © Wu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Immunotherapy based on the tumor microenvironment is a feasible method for treating cancer; therefore, it is necessary to investigate the immune microenvironment of pancreatic cancer and the influencing factors of the immune microenvironment. Chemokines are an important factor affecting the tumor immune microenvironment. In the present study, chemokines or chemokine receptors were screened to identify those differentially expressed in pancreatic cancer compared with normal controls and associated with patient prognosis. Chemokines or chemokine receptors that are differentially expressed in pancreatic cancer tumor tissues were initially screened using the Gene Expression Omnibus database. Next, survival analysis was performed using GEPIA, a website based on The Cancer Genome Atlas (TCGA) database. Immunohistochemical staining of CXCL5 was performed in tissue microarrays (TMAs) containing 119 cases of pancreatic cancer. Histochemistry score (H‑SCORE) was used to evaluate the expression of CXCL5. Next, association analysis of the H‑SCORE of CXCL5 and the clinical characteristics of patients was performed, as well as Kaplan‑Meier survival and Cox multivariate regression analyses. The results of the bioinformatics analysis demonstrated that CXCL5 was highly expressed in pancreatic cancer tissues. High expression of CXCL5 in pancreatic cancer tissues was associated with a poor prognosis in patients in TCGA cohort. The expression level of CXCL5 in tumor tissues was significantly higher compared with that in adjacent peritumoral normal tissues in the immunohistochemical analysis. There was no significant association between CXCL5 expression in pancreatic cancer tumor tissues and clinicopathological factors. Patients with pancreatic cancer with high CXCL5 expression had a poor prognosis, as determined by Kaplan‑Meier survival analysis based on the TMA dataset. The results of Cox multivariate regression analysis showed that CXCL5 was an independent factor for a poor prognosis in patients with pancreatic cancer. In conclusion, the results of the present study revealed that the chemokine CXCL5 was highly expressed in pancreatic cancer tissues; high CXCL5 expression was associated with a poor prognosis in patients with pancreatic cancer.
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November-2020
Volume 20 Issue 5

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Copy and paste a formatted citation
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Spandidos Publications style
Wu B, Wang J, Wang X, Zhu M, Chen F, Shen Y and Zhong Z: CXCL5 expression in tumor tissues is associated with poor prognosis in patients with pancreatic cancer. Oncol Lett 20: 257, 2020.
APA
Wu, B., Wang, J., Wang, X., Zhu, M., Chen, F., Shen, Y., & Zhong, Z. (2020). CXCL5 expression in tumor tissues is associated with poor prognosis in patients with pancreatic cancer. Oncology Letters, 20, 257. https://doi.org/10.3892/ol.2020.12120
MLA
Wu, B., Wang, J., Wang, X., Zhu, M., Chen, F., Shen, Y., Zhong, Z."CXCL5 expression in tumor tissues is associated with poor prognosis in patients with pancreatic cancer". Oncology Letters 20.5 (2020): 257.
Chicago
Wu, B., Wang, J., Wang, X., Zhu, M., Chen, F., Shen, Y., Zhong, Z."CXCL5 expression in tumor tissues is associated with poor prognosis in patients with pancreatic cancer". Oncology Letters 20, no. 5 (2020): 257. https://doi.org/10.3892/ol.2020.12120