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Lyu R, Wu J, He Y, You Q, Qian Y, Jiang N, Cai Y, Chen D, Wu Z. Folate supports IL-25-induced tuft cell expansion following enteroviral infections. FASEB J 2024; 38:e23430. [PMID: 38243751 DOI: 10.1096/fj.202301928r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/11/2023] [Accepted: 01/03/2024] [Indexed: 01/21/2024]
Abstract
Intestinal tuft cells, a kind of epithelial immune cells, rapidly expand in response to pathogenic infections, which is associated with infection-induced interleukin 25 (IL-25) upregulation. However, the metabolic mechanism of IL-25-induced tuft cell expansion is largely unknown. Folate metabolism provides essential purine and methyl substrates for cell proliferation and differentiation. Thus, we aim to investigate the roles of folate metabolism playing in IL-25-induced tuft cell expansion by enteroviral infection and recombinant murine IL-25 (rmIL-25) protein-stimulated mouse models. At present, enteroviruses, such as EV71, CVA16, CVB3, and CVB4, upregulated IL-25 expression and induced tuft cell expansion in the intestinal tissues of mice. However, EV71 did not induce intestinal tuft cell expansion in IL-25-/- mice. Interestingly, compared to the mock group, folate was enriched in the intestinal tissues of both the EV71-infected group and the rmIL-25 protein-stimulated group. Moreover, folate metabolism supported IL-25-induced tuft cell expansion since both folate-depletion and anti-folate MTX-treated mice had a disrupted tuft cell expansion in response to rmIL-25 protein stimulation. In summary, our data suggested that folate metabolism supported intestinal tuft cell expansion in response to enterovirus-induced IL-25 expression, which provided a new insight into the mechanisms of tuft cell expansion from the perspective of folate metabolism.
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Affiliation(s)
- Ruining Lyu
- Center for Public Health Research, Medical School, Nanjing University, Nanjing, China
| | - Jing Wu
- Center for Public Health Research, Medical School, Nanjing University, Nanjing, China
| | - Yating He
- Center for Public Health Research, Medical School, Nanjing University, Nanjing, China
| | - Qiao You
- Center for Public Health Research, Medical School, Nanjing University, Nanjing, China
| | - Yajie Qian
- Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Na Jiang
- Center for Public Health Research, Medical School, Nanjing University, Nanjing, China
| | - Yurong Cai
- School of Life Science, Ningxia University, Yinchuan, China
| | - Deyan Chen
- Center for Public Health Research, Medical School, Nanjing University, Nanjing, China
| | - Zhiwei Wu
- Center for Public Health Research, Medical School, Nanjing University, Nanjing, China
- School of Life Science, Ningxia University, Yinchuan, China
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing, China
- Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
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