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Interleukin-11 is a Marker for Both Cancer- and Inflammation-Associated Fibroblasts that Contribute to Colorectal Cancer Progression

Nishina, T.; Deguchi, Y.; Takeda, W.; Ohtsuka, M.; Ohshima, D.; Yamazaki, S.; Kawauchi, M.; Nakamura, E.; Nishiyama, C.; Kojima, Y.; Adachi-Akemi, S.; Hasegawa, M.; Nakayama, M.; Ohshima, M.; Yagita, H.; Shibuya, K.; Mikami, T.; Inohara, N.; Tada, N.; Nakano, H.

2020-01-26 cancer biology
10.1101/2020.01.25.919795 bioRxiv
Show abstract

Interleukin (IL)-11 is a member of the IL-6 family of cytokines and involved in multiple cellular responses, including tumor development. However, the origin and functions of IL-11-producing (IL-11+) cells are not fully understood. To characterize IL-11+ cells in vivo, we generated Il11 reporter mice. IL-11+ cells appeared in the colon of three murine tumor models, and a murine acute colitis model. Il11ra1 or Il11 deletion attenuated the development of colitis-associated colorectal cancer. IL-11+ cells expressed fibroblast markers, and genes associated with cell proliferation and tissue repair. IL-11 induced STAT3 phosphorylation in colonic fibroblasts, suggesting the activation of IL-11+ fibroblasts. Analysis using the human cancer database revealed that genes enriched in IL-11+ fibroblasts were elevated in human colorectal cancer, and correlated with reduced disease-free survival. Together, our results suggested that tumor cells induced IL-11+ fibroblasts, and that a feed-forward loop between IL-11 and IL-11+ fibroblasts might contribute to tumor development.

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