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A fiber-deprived diet disturbs the fine-scale spatial architecture of the murine colon microbiome
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A fiber-deprived diet disturbs the fine-scale spatial architecture of the murine colon microbiome
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Journal Article
A fiber-deprived diet disturbs the fine-scale spatial architecture of the murine colon microbiome
2019
Overview
Compartmentalization of the gut microbiota is thought to be important to system function, but the extent of spatial organization in the gut ecosystem remains poorly understood. Here, we profile the murine colonic microbiota along longitudinal and lateral axes using laser capture microdissection. We found fine-scale spatial structuring of the microbiota marked by gradients in composition and diversity along the length of the colon. Privation of fiber reduces the diversity of the microbiota and disrupts longitudinal and lateral gradients in microbiota composition. Both mucus-adjacent and luminal communities are influenced by the absence of dietary fiber, with the loss of a characteristic distal colon microbiota and a reduction in the mucosa-adjacent community, concomitant with depletion of the mucus layer. These results indicate that diet has not only global but also local effects on the composition of the gut microbiota, which may affect function and resilience differently depending on location.
Here, employing laser capture microdissection and omics, the authors determine the effects of fiber-deprived diet on the spatial structure of the murine colon microbiome, finding that the absence of dietary fiber and polysaccharides leads to local changes along the colon and deterioration of the mucus layer.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
