Open Access

CD244+ polymorphonuclear myeloid‑derived suppressor cells reflect the status of peritoneal dissemination in a colon cancer mouse model

  • Authors:
    • Yutaka Sugita
    • Kimihiro Yamashita
    • Mitsugu Fujita
    • Masafumi Saito
    • Kota Yamada
    • Kyosuke Agawa
    • Akihiro Watanabe
    • Eiji Fukuoka
    • Hiroshi Hasegawa
    • Shingo Kanaji
    • Taro Oshikiri
    • Takeru Matsuda
    • Tetsu Nakamura
    • Satoshi Suzuki
    • Yoshihiro Kakeji
  • View Affiliations

  • Published online on: April 19, 2021     https://doi.org/10.3892/or.2021.8057
  • Article Number: 106
  • Copyright: © Sugita et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Despite the recent development of chemotherapeutic agents, the prognosis of colorectal cancer (CRC) patients with peritoneal dissemination (PD) remains poor. The tumor immune microenvironment (TIME) has drawn attention as a key contributing factor of tumor progression. Of TIME components, myeloid‑derived suppressor cells (MDSCs) are considered to play a responsible role in the immunosuppressive characteristics of the TIME. MDSCs are classified into two major subsets: Monocytic MDSCs (M‑MDSCs) and polymorphonuclear MDSCs (PMN‑MDSCs). Therefore, we hypothesize that MDSCs would play important roles in the PD‑relevant TIME and PD progression. To address this hypothesis, we established PD mouse models. As the PD nodules consisted scarcely of immune cells, we focused on the peritoneal cavity, but not PD nodule, to evaluate the PD‑relevant TIME. As a result, intraperitoneal PMN‑MDSCs were found to be substantially increased in association with PD progression. Based on these results, we phenotypically and functionally verified the usefulness of CD244 for identifying PMN‑MDSCs. In addition, the concentrations of interleukin (IL)‑6 and granulocyte‑colony stimulating factor (G‑CSF) were significantly increased in the peritoneal cavity, both of which were produced by the tumors and thought to contribute to the increases in the PMN‑MDSCs. In vivo depletion of the PMN‑MDSCs by anti‑Ly6G monoclonal antibody (mAb) significantly inhibited the PD progression and reverted CD4+ and CD8+ T cells in the peritoneal cavity and the peripheral blood. Collectively, these results suggest that the targeted therapy for PMN‑MDSCs would provide not only new therapeutic value but also a novel strategy to synergize with T‑cell‑based immunotherapy for CRC‑derived PD.
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June-2021
Volume 45 Issue 6

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Copy and paste a formatted citation
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Spandidos Publications style
Sugita Y, Yamashita K, Fujita M, Saito M, Yamada K, Agawa K, Watanabe A, Fukuoka E, Hasegawa H, Kanaji S, Kanaji S, et al: CD244<sup>+</sup> polymorphonuclear myeloid‑derived suppressor cells reflect the status of peritoneal dissemination in a colon cancer mouse model. Oncol Rep 45: 106, 2021
APA
Sugita, Y., Yamashita, K., Fujita, M., Saito, M., Yamada, K., Agawa, K. ... Kakeji, Y. (2021). CD244<sup>+</sup> polymorphonuclear myeloid‑derived suppressor cells reflect the status of peritoneal dissemination in a colon cancer mouse model. Oncology Reports, 45, 106. https://doi.org/10.3892/or.2021.8057
MLA
Sugita, Y., Yamashita, K., Fujita, M., Saito, M., Yamada, K., Agawa, K., Watanabe, A., Fukuoka, E., Hasegawa, H., Kanaji, S., Oshikiri, T., Matsuda, T., Nakamura, T., Suzuki, S., Kakeji, Y."CD244<sup>+</sup> polymorphonuclear myeloid‑derived suppressor cells reflect the status of peritoneal dissemination in a colon cancer mouse model". Oncology Reports 45.6 (2021): 106.
Chicago
Sugita, Y., Yamashita, K., Fujita, M., Saito, M., Yamada, K., Agawa, K., Watanabe, A., Fukuoka, E., Hasegawa, H., Kanaji, S., Oshikiri, T., Matsuda, T., Nakamura, T., Suzuki, S., Kakeji, Y."CD244<sup>+</sup> polymorphonuclear myeloid‑derived suppressor cells reflect the status of peritoneal dissemination in a colon cancer mouse model". Oncology Reports 45, no. 6 (2021): 106. https://doi.org/10.3892/or.2021.8057