Metastasized murine oral squamous cell carcinoma cells induce intratumoral polymorphonuclear myeloid derived suppressor cells

  • Authors:
    • Shigeki Sumi
    • Naoki Umemura
    • Eiji Takayama
    • Emika Ohkoshi
    • Makoto Adachi
    • Masako Mizuno-Kamiya
    • Toshihiro Inagaki
    • Harumi Kawaki
    • Shinichiro Sumitomo
    • Nobuo Kondoh
  • View Affiliations

  • Published online on: April 11, 2017     https://doi.org/10.3892/or.2017.5575
  • Pages: 2897-2904
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Abstract

Myeloid derived suppressor cells (MDSCs) localize to hematopoietic organs and peripheral blood during inflammation or tumor tissues and lymph nodes in the presence of a tumor. However, whether there are differences in MDSCs found in the primary tumor and metastases is unknown. In the present study, we established a cell line of metastasized tumor cells to a lymph node, L5-11, which were derived from the Sq-1979 mouse buccal mucosa squamous cell carcinoma cell line. We then analyzed tumor immunogenicity, especially with regard to MDSCs, to clarify the differences between the primary tumor and metastases, using an isogenic heterotopic tumor transplantation model. Our data showed that the population of intratumoral MDSCs, especially polymorphonuclear MDSCs in the lymph node metastasis model were significantly increased compared with syngeneic grafts from the primary cell line Sq-1979 after 21 days. Furthermore, we identified that the lymph node metastasis cell line had increased expression of genes that promote the expansion of MDSCs, tumor growth and metastasis. Hence, these data suggest that tumor immunosuppression can occur via activation of MDSCs. However, further examination is required to clarify whether all or a subset of these factors from the lymph node metastasis tumor cells are required to induce intratumoral MDSCs.
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May 2017
Volume 37 Issue 5

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

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APA
Sumi, S., Umemura, N., Takayama, E., Ohkoshi, E., Adachi, M., Mizuno-Kamiya, M. ... Kondoh, N. (2017). Metastasized murine oral squamous cell carcinoma cells induce intratumoral polymorphonuclear myeloid derived suppressor cells. Oncology Reports, 37, 2897-2904. https://doi.org/10.3892/or.2017.5575
MLA
Sumi, S., Umemura, N., Takayama, E., Ohkoshi, E., Adachi, M., Mizuno-Kamiya, M., Inagaki, T., Kawaki, H., Sumitomo, S., Kondoh, N."Metastasized murine oral squamous cell carcinoma cells induce intratumoral polymorphonuclear myeloid derived suppressor cells". Oncology Reports 37.5 (2017): 2897-2904.
Chicago
Sumi, S., Umemura, N., Takayama, E., Ohkoshi, E., Adachi, M., Mizuno-Kamiya, M., Inagaki, T., Kawaki, H., Sumitomo, S., Kondoh, N."Metastasized murine oral squamous cell carcinoma cells induce intratumoral polymorphonuclear myeloid derived suppressor cells". Oncology Reports 37, no. 5 (2017): 2897-2904. https://doi.org/10.3892/or.2017.5575