Vertically transmitted fecal IgA levels distinguish extra-chromosomal phenotypic variation
The proliferation of genetically modified mouse models has exposed phenotypic variation between investigators and institutions that has been challenging to control1-5. In many cases, the microbiota is the presumed culprit of the variation. Current solutions to account for phenotypic variability incl...
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2015
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4425643/ |
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pubmed-44256432015-11-07 Vertically transmitted fecal IgA levels distinguish extra-chromosomal phenotypic variation Moon, Clara Baldridge, Megan T. Wallace, Meghan A. D, Carey-Ann Burnham, Virgin, Herbert W. Stappenbeck, Thaddeus S. Article The proliferation of genetically modified mouse models has exposed phenotypic variation between investigators and institutions that has been challenging to control1-5. In many cases, the microbiota is the presumed culprit of the variation. Current solutions to account for phenotypic variability include littermate and maternal controls or defined microbial consortia in gnotobiotic mice6,7. In conventionally raised mice, the microbiome is transmitted from the dam2,8,9. Here we show that microbially–driven dichotomous fecal IgA levels in WT mice within the same facility mimic the effects of chromosomal mutations. We observed in multiple facilities that vertically-transmissible bacteria in IgA-Low mice dominantly lowered fecal IgA levels in IgA-High mice after cohousing or fecal transplantation. In response to injury, IgA-Low mice showed increased damage that was transferable by fecal transplantation and driven by fecal IgA differences. We found that bacteria from IgA-Low mice degraded the secretory component (SC) of SIgA as well as IgA itself. These data indicate that phenotypic comparisons between mice must take into account the non-chromosomal hereditary variation between different breeders. We propose fecal IgA as one marker of microbial variability and conclude that cohousing and/or fecal transplantation enables analysis of progeny from different dams. 2015-02-16 2015-05-07 /pmc/articles/PMC4425643/ /pubmed/25686606 http://dx.doi.org/10.1038/nature14139 Text en Reprints and permissions information is available at www.nature.com/reprints (http://www.nature.com/reprints) . |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Moon, Clara Baldridge, Megan T. Wallace, Meghan A. D, Carey-Ann Burnham, Virgin, Herbert W. Stappenbeck, Thaddeus S. |
| spellingShingle |
Moon, Clara Baldridge, Megan T. Wallace, Meghan A. D, Carey-Ann Burnham, Virgin, Herbert W. Stappenbeck, Thaddeus S. Vertically transmitted fecal IgA levels distinguish extra-chromosomal phenotypic variation |
| author_facet |
Moon, Clara Baldridge, Megan T. Wallace, Meghan A. D, Carey-Ann Burnham, Virgin, Herbert W. Stappenbeck, Thaddeus S. |
| author_sort |
Moon, Clara |
| title |
Vertically transmitted fecal IgA levels distinguish extra-chromosomal phenotypic variation |
| title_short |
Vertically transmitted fecal IgA levels distinguish extra-chromosomal phenotypic variation |
| title_full |
Vertically transmitted fecal IgA levels distinguish extra-chromosomal phenotypic variation |
| title_fullStr |
Vertically transmitted fecal IgA levels distinguish extra-chromosomal phenotypic variation |
| title_full_unstemmed |
Vertically transmitted fecal IgA levels distinguish extra-chromosomal phenotypic variation |
| title_sort |
vertically transmitted fecal iga levels distinguish extra-chromosomal phenotypic variation |
| description |
The proliferation of genetically modified mouse models has exposed phenotypic variation between investigators and institutions that has been challenging to control1-5. In many cases, the microbiota is the presumed culprit of the variation. Current solutions to account for phenotypic variability include littermate and maternal controls or defined microbial consortia in gnotobiotic mice6,7. In conventionally raised mice, the microbiome is transmitted from the dam2,8,9. Here we show that microbially–driven dichotomous fecal IgA levels in WT mice within the same facility mimic the effects of chromosomal mutations. We observed in multiple facilities that vertically-transmissible bacteria in IgA-Low mice dominantly lowered fecal IgA levels in IgA-High mice after cohousing or fecal transplantation. In response to injury, IgA-Low mice showed increased damage that was transferable by fecal transplantation and driven by fecal IgA differences. We found that bacteria from IgA-Low mice degraded the secretory component (SC) of SIgA as well as IgA itself. These data indicate that phenotypic comparisons between mice must take into account the non-chromosomal hereditary variation between different breeders. We propose fecal IgA as one marker of microbial variability and conclude that cohousing and/or fecal transplantation enables analysis of progeny from different dams. |
| publishDate |
2015 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4425643/ |
| _version_ |
1613221350770475008 |