4.7 Article

Components of a Neanderthal gut microbiome recovered from fecal sediments from El Salt

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COMMUNICATIONS BIOLOGY
卷 4, 期 1, 页码 -

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NATURE PORTFOLIO
DOI: 10.1038/s42003-021-01689-y

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  1. US National Institutes of Health [R01GM089886]
  2. European Research Council (ERC) under the European Union [724046 - SUCCESS]
  3. Spanish I+D Project [HAR2008-06117/HIST]

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By analyzing ancient bacterial profiles from fecal sediments at the El Salt Middle Paleolithic site in Spain, researchers found evidence of a core human gut microbiome that may have been shared by Neanderthals and modern humans before their divergence. This suggests that beneficial gut commensals like Blautia, Dorea, Roseburia, Ruminococcus, Faecalibacterium, and Bifidobacterium have been present in the intestinal microbiome of Homo since the last common ancestor between humans and Neanderthals.
A comprehensive view of our evolutionary history cannot ignore the ancestral features of our gut microbiota. To provide some glimpse into the past, we searched for human gut microbiome components in ancient DNA from 14 archeological sediments spanning four stratigraphic units of El Salt Middle Paleolithic site (Spain), including layers of unit X, which has yielded well-preserved Neanderthal occupation deposits dating around 50kya. According to our findings, bacterial genera belonging to families known to be part of the modern human gut microbiome are abundantly represented only across unit X samples, showing that well-known beneficial gut commensals, such as Blautia, Dorea, Roseburia, Ruminococcus, Faecalibacterium and Bifidobacterium already populated the intestinal microbiome of Homo since as far back as the last common ancestor between humans and Neanderthals. Simone Rampelli, Silvia Turroni and colleagues report ancient bacterial profiles of fecal sediments from four stratigraphic units of El Salt Middle Paleolithic site in Spain. The results of this study suggest a core human gut microbiome that could have been shared by Neanderthals and modern humans, and would pre-date the split between these two lineages.

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