Cited by 53Cytokine Signaling Pathways and InteractionsT-cell and B-cell ImmunologyCancer Immunotherapy and Biomarkers

Soluble IL6R expressed by myeloid cells reduces tumor-specific Th1 differentiation and drives tumor progression

Tsukamoto, Hirotake, Fujieda, Koji, Hirayama, Masatoshi, Ikeda, Tokunori, Yuno, Akira, Matsumura, Keiko, Fukuma, Daiki, Araki, Kimi +4 more·2017·Cancer Research

Published version of a preprint

Abstract

IL6 produced by tumor cells promotes their survival, conferring a poor prognosis in patients with cancer. IL6 also contributes to immunosuppression of CD4 + T cell-mediated antitumor effects. In this study, we focused on the impact of IL6 trans-signaling mediated by soluble IL6 receptors (sIL6R) expressed in tumor-bearing hosts. Higher levels of sIL6R circulating in blood were observed in tumor-bearing mice, whereas the systemic increase of sIL6R was not prominent in tumor-bearing mice with myeloid cell-specific conditional deletion of IL6R even when tumor cells produced sIL6R. Abundant sIL6R was released by CD11b + cells from tumor-bearing mice but not tumor-free mice. Notably, IL6-mediated defects in Th1 differentiation, T-cell helper activity for tumor-specific CD8 + T cells, and downstream antitumor effects were rescued by myeloid-specific deletion of sIL6R. Expression of the T-cell transcription factor c-Maf was upregulated in CD4 + T cells primed in tumor-bearing mice in an IL6-dependent manner. Investigations with c-Maf loss-of-function T cells revealed that c-Maf activity was responsible for IL6/sIL6R-induced Th1 suppression and defective T-cell-mediated antitumor responses. In patients with cancer, myeloid cell-derived sIL6R was also possibly associated with Th1 suppression and c-Maf expression. Our results argued that increased expression of sIL6R from myeloid cells and subsequent c-Maf induction were adverse events for counteracting tumor-specific Th1 generation. O…

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Crossref · 10.1158/0008-5472.can-16-2446

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  • Myeloid-derived sIL-6R complexed with IL-6 inhibits Th1 responses through STAT3-induced c-Maf, considered one mechanism by which IL-6 inhibits T-cell immunity against tumors.

    “It was shown that myeloid-derived sIL-6R complexed with IL-6 inhibits Th1 responses through STAT3-induced c-Maf. This is considered to be one of mechanisms by which IL-6 inhibits T-cell immunity against tumors (156).”

    From IL-6 in inflammation, autoimmunity and cancer (2021) · cites this paper as [156]

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Authors
Tsukamoto, H., Fujieda, K., Hirayama, M., Ikeda, T., Yuno, A., Matsumura, K., Fukuma, D., Araki, K., Mizuta, H., Nakayama, H., Senju, S., & Nishimura, Y.
Affiliations
  • Kumamoto University (JP)
  • Institute of Resource Development and Analysis, Kumamoto University (JP)
Venue
Cancer Research
Published
2017-04-30
Volume
77
Issue
9
Pages
2279-2291
ISSN
  • 0008-5472 (ISSN-L)
  • 1538-7445
OpenAlex
W2590262184
Cited by
53
References
43
Citations by year
2026: 2 · 2025: 1 · 2024: 6 · 2023: 8 · 2022: 8 · 2021: 6 · 2020: 14 · 2019: 2 · 2018: 3 · 2017: 3
FWCI
2.65
Type
journal article
Language
en
Open access
closed
Locations
  • Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Japan Society for the Promotion of Science (16H 06498, 16K07093, 15K19493, 17H04272, 15H04311, 15K11296, 16H06276)
Topics
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
Keywords
myeloid cells, Th1 differentiation, c-Maf, CD4+ T cells, CD8+ T cells, tumor immunosuppression, tumor progression, cancer immunotherapy, CD11b+ cells, tumor-bearing mice
MeSH terms
Animals, Humans, Neoplasms, CD4-Positive T-Lymphocytes, Interleukin-6, Gene Expression Regulation, Neoplastic, Th1 Cells, Receptors, Interleukin-6, Myeloid Cells, Proto-Oncogene Proteins c-maf, Mice, Molecular Targeted Therapy, Carcinogenesis

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