Evidence map›Paper›PMID 27111508›Full record

ArticleNature2016

The evolution of cooperation within the gut microbiota.

Seth Rakoff-Nahoum, Kevin R Foster, Laurie E Comstock

Registry-linked trialAbstract read
In one paragraph

Article in Nature, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06638606 (Microbiota Profiles in Newly Married Couples), which is not on this map. Cited by 300 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
300citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT06638606 completednot on this mapstarted 2024, after this paper: background citation

Microbiota Profiles in Newly Married Couples: Potential Effects on Vision, Sleep and Psychometric Parameters

TypeobservationalSponsorReza RastmaneshRan2024 to 2024Enrolled1,740ConditionsSleep Deprivation, Gut Microbiota, Optometry Examinations, Oral MicrobiotaArmsSleep improvement techniques
3 · Its place in the literature

Who cites it

300 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Gut Microbiome Changes Associated With HIV Infection and Sexual Orientation.Frontiers in cellular and infection microbiology · 2020
    Pooled it
  3. Trial
  4. Review
  5. The phenotypic landscape of the model firmicuteProceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. The island biology of the host microbiome.Trends in microbiology · 2026
    Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

240 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Seth Rakoff-NahoumDivision of Infectious Diseases, Department of Medicine, Boston Children's Hospital and Harvard Medical School, 300 Longwood Avenue, Boston, Massachusetts 02115, USA.
Kevin R FosterDepartment of Zoology and Oxford Centre for Integrative Systems Biology, University of Oxford, Oxford OX1 3PS, UK.
Laurie E ComstockDivision of Infectious Diseases, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, 181 Longwood Avenue, Boston, Massachusetts 02115, USA.

Funding

STRUCTURE-FUNCTION RELATIONSHIPS IN THE ALIMENTARY TRACTP30DK034854 · NIDDK · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI JONATHAN C KAGAN · 1986 to 2026
$32.4M
The Child Heath Research CenterK12HD052896 · NICHD · BOSTON CHILDREN'S HOSPITAL · PI Wendy K Chung · 2007 to 2026
$7.9M
Significance of Bacteroides fragilis polysaccharide phase variationR01AI081843 · NIAID · BRIGHAM AND WOMEN'S HOSPITAL · PI COMSTOCK, LAURIE E · 2010 to 2014
$1.9M
European Research Council 242670NIAID NIH HHS R01 AI081843NIAID NIH HHS R01AI081843NICHD NIH HHS K12 HD052896NIDDK NIH HHS P30 DK034854NIDDK NIH HHS P30 DK34845
6 · The paper itself

Abstract

Cooperative phenotypes are considered central to the functioning of microbial communities in many contexts, including communication via quorum sensing, biofilm formation, antibiotic resistance, and pathogenesis. The human intestine houses a dense and diverse microbial community critical to health, yet we know little about cooperation within this important ecosystem. Here we test experimentally for evolved cooperation within the Bacteroidales, the dominant Gram-negative bacteria of the human intestine. We show that during growth on certain dietary polysaccharides, the model member Bacteroides thetaiotaomicron exhibits only limited cooperation. Although this organism digests these polysaccharides extracellularly, mutants lacking this ability are outcompeted. In contrast, we discovered a dedicated cross-feeding enzyme system in the prominent gut symbiont Bacteroides ovatus, which digests polysaccharide at a cost to itself but at a benefit to another species. Using in vitro systems and gnotobiotic mouse colonization models, we find that extracellular digestion of inulin increases the fitness of B. ovatus owing to reciprocal benefits when it feeds other gut species such as Bacteroides vulgatus. This is a rare example of naturally-evolved cooperation between microbial species. Our study reveals both the complexity and importance of cooperative phenotypes within the mammalian intestinal microbiota.

Indexed as

Biological EvolutionSymbiosisAnimalsBacteroidesDietary CarbohydratesGastrointestinal MicrobiomeGerm-Free LifeGlycoside HydrolasesHumansIntestinesInulinIn Vitro TechniquesMaleMiceDietary CarbohydratesGlycoside HydrolasesInulin

Identifiers

PMID27111508
PMCPMC4978124

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.