The Wnt-β-Catenin-IL-10 Signaling Axis in Intestinal APCs Protects Mice from Colitis-Associated Colon Cancer in Response to Gut Microbiota.
The Wnt-β-Catenin-IL-10 Signaling Axis in Intestinal APCs Protects Mice from Colitis-Associated Colon Cancer in Response to Gut Microbiota.
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DOI:
10.4049/jimmunol.1901376
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发表时间:
2020-10-15
期刊:
影响因子:
--
通讯作者:
Manicassamy S
中科院分区:
文献类型:
--
作者:
Swafford D;Shanmugam A;Ranganathan P;Manoharan I;Hussein MS;Patel N;Sifuentes H;Koni PA;Prasad PD;Thangaraju M;Manicassamy S
Loss of immune tolerance to gut microflora is inextricably linked to chronic intestinal inflammation and colitis-associated colon cancer (CAC). The LRP5/6 signaling cascade in antigen-presenting cells (APCs) contributes to immune homeostasis in the gut but whether this pathway in APCs protects against CAC is not known. In the present study, using a mouse model of CAC, we show that the LRP5/6-β-catenin-IL-10 signaling axis in intestinal CD11c+ APCs protects mice from CAC by regulating the expression of tumor-promoting inflammatory factors in response to commensal flora. Genetic deletion of LRP5/6 in CD11c+ APCs in mice (LRP5/6ΔCD11c) resulted in enhanced susceptibility to CAC. This is due to a microbiota-dependent increased expression of pro-inflammatory factors and decreased expression of the immunosuppressive cytokine, IL-10. This condition could be improved in LRP5/6ΔCD11c mice by depleting the gut flora, indicating the importance of LRP5/6 in mediating immune tolerance to the gut flora. Moreover, mechanistic studies show that LRP5/6 suppresses the expression of tumor-promoting inflammatory factors in CD11c+ APCs via the β-catenin-IL-10 axis. Accordingly, conditional activation of β-catenin specifically in CD11c+ APCs or in vivo administration of IL-10 protected LRP5/6ΔCD11c mice from CAC by suppressing the expression of inflammatory factors. In summary, here we identify a key role for the LRP5/6-β-catenin-IL-10 signaling pathway in intestinal APCs in resolving chronic intestinal inflammation and protecting against CAC in response to the commensal flora.
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影响因子:
16.6
作者:
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Jobin, Christian
影响因子:
11.2
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Hong Y;Manoharan I;Suryawanshi A;Majumdar T;Angus-Hill ML;Koni PA;Manicassamy B;Mellor AL;Munn DH;Manicassamy S
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Manicassamy S
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64.8
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通讯作者:
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