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Li P, Pu S, Yi J, Li X, Wu Q, Yang C, Kang M, Peng F, Zhou Z. Deletion of IL-27p28 induces CD8 T cell immunity against colorectal tumorigenesis. Int Immunopharmacol 2024; 128:111464. [PMID: 38224627 DOI: 10.1016/j.intimp.2023.111464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/18/2023] [Accepted: 12/27/2023] [Indexed: 01/17/2024]
Abstract
Colorectal cancer (CRC) is a leading cause of cancer-related deaths worldwide, characterized by molecular and clinical heterogeneity. Interleukin (IL)-27, a heterodimeric cytokine composed of p28 and EBI3 subunits, has been reported to exert potent antitumor activity in several cancer models. However, the precise role of IL-27 in the pathogenesis of CRC remains unclear. Here, we show that during the azoxymethane (AOM)/dextran sodium sulfate (DSS)-induced CRC development, IL-27p28 levels are dramatically increased in peripheral blood and tumor tissues, and the cytokine is mainly produced by tumor-infiltrating myeloid cells. IL-27p28 deficient mice display tumor resistances in both inflammation-associated CRC model and syngeneic MC38 colon cancer model. Administration with IL-27p28 neutralizing antibody also reduces the tumor formation in AOM/DSS-treated mice. Mechanically, CD8+ T cells in IL-27p28-/- mice exhibit enhanced tumor infiltration and cytotoxicity, which can be largely attributed to activation of the Akt/mTOR signaling pathway. Furthermore, selective depletion of CD8+ T cells in IL-27p28-/- mice markedly accelerate tumor growth and almost abrogate the protective effects of IL-27p28 deficiency. Most interestingly, the expression of IL-27p28 is also upregulated in tumor tissues of CRC patients and those with high expression of IL-27p28 tend to have a poorer overall survival. Our results suggest that loss of IL-27p28 suppresses colorectal tumorigenesis by augmenting CD8+ T cell-mediated anti-tumor immunity. Targeting IL-27p28 could be developed as a novel strategy for the treatment of colorectal cancers.
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Affiliation(s)
- Peihua Li
- College of Physical Education and Health, Guangxi Normal University, Guilin 541006, China; College of Life Sciences, Guangxi Normal University, Guilin 541004, China
| | - Shiming Pu
- College of Life Sciences, Guangxi Normal University, Guilin 541004, China; Guangxi Universities Key Laboratory of Stem Cell and Biopharmaceutical Technology, Guangxi Normal University, Guilin 541004, China; Research Center for Biomedical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jiequn Yi
- College of Life Sciences, Guangxi Normal University, Guilin 541004, China
| | - Xiaoyu Li
- College of Life Sciences, Guangxi Normal University, Guilin 541004, China
| | - Qiong Wu
- College of Life Sciences, Guangxi Normal University, Guilin 541004, China; Guangxi Universities Key Laboratory of Stem Cell and Biopharmaceutical Technology, Guangxi Normal University, Guilin 541004, China; Research Center for Biomedical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Cheng Yang
- College of Life Sciences, Guangxi Normal University, Guilin 541004, China; Guangxi Universities Key Laboratory of Stem Cell and Biopharmaceutical Technology, Guangxi Normal University, Guilin 541004, China; Research Center for Biomedical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Mafei Kang
- Department of Oncology, Guilin Medical University Affiliated Hospital, Guilin 541001, China
| | - Fenglin Peng
- College of Physical Education and Health, Guangxi Normal University, Guilin 541006, China
| | - Zuping Zhou
- College of Physical Education and Health, Guangxi Normal University, Guilin 541006, China; College of Life Sciences, Guangxi Normal University, Guilin 541004, China; Guangxi Universities Key Laboratory of Stem Cell and Biopharmaceutical Technology, Guangxi Normal University, Guilin 541004, China; Research Center for Biomedical Sciences, Guangxi Normal University, Guilin 541004, China.
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