"Negative regulation of innate immune signalling by components of the button mushroom Agaricus bisporus".
Mol Nutr Food Res 2023:e2200845. [PMID:
37195234 DOI:
10.1002/mnfr.202200845]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/30/2023] [Indexed: 05/18/2023]
Abstract
SCOPE
Mushrooms are valued as an edible and medical resource for millennia. As macrofungi, they possess conserved molecular components recognized by innate immune cells like macrophages, yet unlike pathogenic fungi, they do not trigger the immune system in the same way. That these well-tolerated foods both avoid immuno-surveillance and have positive health benefits, highlights the dearth of information on the interactions of mushroom-derived products with our immune system.
METHODS & RESULTS
Using powders produced from the common white button mushroom, Agaricus bisporus, it was observed that pre-treatment of mouse and human macrophages with mushroom powders attenuates innate immune signalling triggered by microbial ligands like LPS and β-glucans, including NFκB activation and pro-inflammatory cytokine production. This effect of mushroom powders is observed at lower doses of TLR ligands, suggesting a model of competitive inhibition whereby mushroom compounds bind and occupy innate immune receptors, precluding activation by microbial stimuli. This effect is preserved following simulated digestion of the powders. Moreover, in-vivo delivery of mushroom powders attenuates the development of colitis in a DSS-mouse model.
CONCLUSION
Our data highlights an important anti-inflammatory role for powdered A. bisporus mushrooms, which could be further utilized to develop complementary approaches to modulate chronic inflammation and disease. This article is protected by copyright. All rights reserved.
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