Abstract:
:Electrotaxis, directional cell movement in response to an electric potential, has been demonstrated in a wide range of cell types including lymphocytes. Exoelectrogens, microorganisms capable of generating electrical currents, have been identified in microbial fuel cells. However, no studies have investigated exoelectrogenic microbes in fresh feces or the effects of an exoelectrogenic microbiota on the host organism. Here we show that commensal gut microbial populations differ in their capacity for electrical current production by exoelectrogens and that those differences are predictive of increased lymphocyte trafficking to the gut in vivo, despite the lack of increased production of canonical lymphocyte-specific chemokines. Additionally, we demonstrate that the difference in current production between mice purchased from different commercial sources correlates reproducibly with the presence or absence of segmented filamentous bacteria, and while our data do not support a direct role for segmented filamentous bacteria in ex vivo current production, an exoelectrogenic microbiota can be transferred in vivo via mucosa-associated bacteria present in the ileum. Moreover, we detect upregulation of microbial genes associated with extracellular electron transfer in feces of mice colonized with exoelectrogenic microbiota containing segmented filamentous bacteria. While still correlative, these results suggest a novel means by which the gut microbiota modulates the recruitment of cells of the immune system to the gut.
journal_name
Physiol Genomicsjournal_title
Physiological genomicsauthors
Ericsson AC,Davis DJ,Franklin CL,Hagan CEdoi
10.1152/physiolgenomics.00010.2015subject
Has Abstractpub_date
2015-07-01 00:00:00pages
243-52issue
7eissn
1094-8341issn
1531-2267pii
physiolgenomics.00010.2015journal_volume
47pub_type
杂志文章abstract::We previously reported that mice deficient in stearoyl-CoA desaturase-1 (Scd1) and maintained on a very low-fat (VLF) diet for 10 days developed severe loss of body weight, hypoglycemia, hypercholesterolemia, and many cholestasis-like phenotypes. To better understand the metabolic changes associated with these phenoty...
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journal_title:Physiological genomics
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journal_title:Physiological genomics
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journal_title:Physiological genomics
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journal_title:Physiological genomics
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doi:10.1152/physiolgenomics.00184.2002
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