Open Access

Accumulation of T‑helper 22 cells, interleukin‑22 and myeloid‑derived suppressor cells promotes gastric cancer progression in elderly patients

  • Authors:
    • Xuehua Chen
    • Yanfu Wang
    • Jiali Wang
    • Jinhui Wen
    • Xuzhao Jia
    • Xiaojun Wang
    • Hua Zhang
  • View Affiliations

  • Published online on: May 2, 2018     https://doi.org/10.3892/ol.2018.8612
  • Pages: 253-261
  • Copyright: © Chen et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Chronic inflammation and immunosuppression lead to aging and tumorigenesis. T‑helper 22 (Th22) cells, interleukin 22 (IL‑22) and myeloid‑derived suppressor cells (MDSCs) serve an important role in inflammatory‑immune diseases and cancer. However, the status of Th22 cells, IL‑22 and MDSCs in aging and elderly gastric cancer progression is unknown. In the present study, 39 elderly patients with gastric cancer (EGC), 32 elderly healthy controls (HE) and 31 young healthy controls (HY) were enrolled, and the peripheral Th22, Th17 and Th1 cells, and MDSCs, were examined using flow cytometry. Plasma levels of IL‑22, IL‑6 and tumor necrosis factor‑α (TNF‑α) were examined using ELISA. IL‑22 protein levels in tumor tissues were examined using immunohistochemistry. There were increased numbers of peripheral Th22 and Th17 cells, and MDSCs, as well as increased plasma levels of IL‑22, IL‑6 and TNF‑α in EGC compared with HE and HY. However, HE exhibited significantly increased levels of peripheral Th22 and Th17 cells as well as IL‑6 and TNF‑α compared with HY. Immunohistochemical analysis demonstrated that IL‑22 protein accumulated in tumor cells and lymphocytes in the tumor microenvironment. The results obtained demonstrated that peripheral Th22 and Th17 cells as well as IL‑6 and TNF‑α plasma levels increased with aging. Furthermore, Th22 and Th17 cells, MDSCs, and IL‑22 may be used as prognostic markers for identifying gastric cancer in elderly patients.
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July-2018
Volume 16 Issue 1

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

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Spandidos Publications style
Chen X, Wang Y, Wang J, Wen J, Jia X, Wang X and Zhang H: Accumulation of T‑helper 22 cells, interleukin‑22 and myeloid‑derived suppressor cells promotes gastric cancer progression in elderly patients. Oncol Lett 16: 253-261, 2018.
APA
Chen, X., Wang, Y., Wang, J., Wen, J., Jia, X., Wang, X., & Zhang, H. (2018). Accumulation of T‑helper 22 cells, interleukin‑22 and myeloid‑derived suppressor cells promotes gastric cancer progression in elderly patients. Oncology Letters, 16, 253-261. https://doi.org/10.3892/ol.2018.8612
MLA
Chen, X., Wang, Y., Wang, J., Wen, J., Jia, X., Wang, X., Zhang, H."Accumulation of T‑helper 22 cells, interleukin‑22 and myeloid‑derived suppressor cells promotes gastric cancer progression in elderly patients". Oncology Letters 16.1 (2018): 253-261.
Chicago
Chen, X., Wang, Y., Wang, J., Wen, J., Jia, X., Wang, X., Zhang, H."Accumulation of T‑helper 22 cells, interleukin‑22 and myeloid‑derived suppressor cells promotes gastric cancer progression in elderly patients". Oncology Letters 16, no. 1 (2018): 253-261. https://doi.org/10.3892/ol.2018.8612