Cited by 5,277Gut microbiota and healthOral microbiology and periodontitis researchMicrobial Community Ecology and Physiology

Host-Bacterial Mutualism in the Human Intestine

Bäckhed, Fredrik, Ley, Ruth E., Sonnenburg, Justin L., Peterson, Daniel A., Gordon, Jeffrey I.·2005·Science

Abstract

The distal human intestine represents an anaerobic bioreactor programmed with an enormous population of bacteria, dominated by relatively few divisions that are highly diverse at the strain/subspecies level. This microbiota and its collective genomes (microbiome) provide us with genetic and metabolic attributes we have not been required to evolve on our own, including the ability to harvest otherwise inaccessible nutrients. New studies are revealing how the gut microbiota has coevolved with us and how it manipulates and complements our biology in ways that are mutually beneficial. We are also starting to understand how certain keystone members of the microbiota operate to maintain the stability and functional adaptability of this microbial organ.

Integrity signals

Registry

Crossref · 10.1126/science.1104816

Cites

37 of 37 references verified0 citation errors · 0 not checkable

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  • Increased gut permeability is thought to facilitate the movement of inflammatory mediators from the gut into the circulation, promoting systemic insulin resistance.

    “Increased gut permeability is thought to facilitate the movement of inflammatory mediators from the gut into the circulation, promoting systemic insulin resistance [134,136].”

    From The Pathophysiology of Gestational Diabetes Mellitus (2018) · cites this paper as [136]

  • Most animal and human studies have reported that obesity and insulin resistance are associated with an altered ratio of Firmicutes and Bacteroidetes.

    “Most of the animal and human studies have reported that obesity and insulin resistance are associated with an altered ratio of Firmicutes and Bacteroidetes [8,9].”
  • The gut microbiota is integral to human physiology and contributes to metabolism, immune function, and gut homeostasis.

    “It is now understood that the gut microbiota coevolved with the human host over thousands of years and are integral to overall human physiology, playing a pivotal role in metabolism, immune system function and maintenance of gut homeostasis.1, 2”
  • The number of drugs metabolized by the gut microbiota is likely greater than 50 because systematic analyses are lacking and the microbiome is genetically diverse.

    “This number is likely an underestimate given the lack of any systematic analyses of the gut microbial metabolism of drugs and the vast genetic diversity within the microbiome34.”
  • A primary role of the gut microbiota is to assist in digesting food and extracting nutrients that the host cannot metabolize without microbial help.

    “A major function of the gut microbiota is to aid in host food digestion, harvesting key nutrients that the host is incapable of metabolizing without the help of microbes (Backhed et al., 2005).”

    From The Influence of the Gut Microbiome on Cancer, Immunity, and Cancer Immunotherapy (2018) · cites this paper as Backhed et al., 2005

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Authors
Bäckhed, F., Ley, R. E., Sonnenburg, J. L., Peterson, D. A., & Gordon, J. I.
Affiliations
  • Center for Genome Sciences, Washington University School of Medicine, St. Louis, MO 63108, USA.
  • Washington University in St. Louis (US)
Corresponding author
  • Ley, Ruth E.
  • Gordon, Jeffrey I.
Venue
Science
Published
2005-03-25
Volume
307
Issue
5717
Pages
1915-1920
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1980914602
Cited by
5,277
References
37
Citations by year
2026: 143 · 2025: 225 · 2024: 281 · 2023: 322 · 2022: 363 · 2021: 389 · 2020: 359 · 2019: 344 · 2018: 276 · 2017: 277 · 2016: 313 · 2015: 257 · 2014: 288 · 2013: 243 · 2012: 227
FWCI
10.06
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
  • Physical Sciences › Environmental Science › Ecology › Microbial Community Ecology and Physiology
Keywords
gut microbiota, human intestine, microbiome, coevolution, microbial diversity, strain-level diversity, nutrient acquisition, microbiological stability, keystone species, anaerobic bioreactor
MeSH terms
Anaerobiosis, Bacteria, Bacteroides, Energy Intake, Energy Metabolism, Biological Evolution, Humans, Intestines, Obesity, Selection, Genetic, Genome, Bacterial, Ecosystem, Bacterial Physiological Phenomena, Gastrointestinal Tract, Biodiversity

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