Cell-Type-Specific Responses to Interleukin-1 Control Microbial Invasion and Tumor-Elicited Inflammation in Colorectal Cancer

O. Dmitrieva-Posocco, A. Dzutsev, D. F. Posocco, V. Hou, W. Yuan, V. Thovarai, I. A. Mufazalov, M. Gunzer, I. P. Shilovskiy, M. R. Khaitov, G. Trinchieri, A. Waisman, S. I. Grivennikov

Research output: Contribution to journalArticlepeer-review

127 Scopus citations

Abstract

Chronic inflammation drives the progression of colorectal cancer (CRC). Increased expression of interleukin (IL)-17A is associated with poor prognosis, and IL-17A blockade curbs tumor progression in preclinical models of CRC. Here we examined the impact of IL-1 signaling, a key regulator of the IL-17 pathway, in different cell types within the CRC microenvironment. Genetic deletion of the IL-1 receptor (IL-1R1) in epithelial cells alleviated tumorigenesis in the APC model of CRC, demonstrating a cell-autonomous role for IL-1 signaling in early tumor seed outgrowth. T cell specific ablation of IL-1R1 decreased tumor-elicited inflammation dependent on IL-17 and IL-22, thereby reducing CRC progression. The pro-tumorigenic roles of IL-1 were counteracted by its effects on myeloid cells, particularly neutrophils, where IL-1R1 ablation resulted in bacterial invasion into tumors, heightened inflammation and aggressive CRC progression. Thus, IL-1 signaling elicits cell-type-specific responses, which, in aggregate, set the inflammatory tone of the tumor microenvironment and determine the propensity for disease progression.
Original languageAmerican English
Pages (from-to)166-180 e7
JournalImmunity
Volume50
Issue number1
DOIs
StatePublished - 2019
Externally publishedYes

Keywords

  • Animals Carcinogenesis Cells, Cultured Colorectal Neoplasms/*immunology Humans Inflammation/*metabolism Interleukin-1/genetics/immunology/*metabolism Interleukin-17/*metabolism Interleukins/metabolism Mice Mice, Knockout Neutrophils/*immunology/ultrastructure Organ Specificity Receptors, Interleukin-1/genetics Salmonella/*immunology Salmonella Infections, Animal/*immunology Signal Transduction Tumor Microenvironment Interleukin-22 Cytokine Interleukin 1 cell type specific signaling colorectal cancer microbiota tumor elicited inflammation

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