Featured
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News & Views |
Gut microbes augment neurodegeneration
Bacterial residents of the human body often provide beneficial effects, but some can be harmful. The action of gut bacteria has been found to be tightly linked to neurodegeneration in a mouse model of Parkinson's disease.
- Daniel Erny
- & Marco Prinz
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Outlook |
Microbiome: Puppy power
Once anathema, it now seems that a 'dirty' environment can enrich a baby's microbiome and lessen her or his likelihood of developing everything from obesity to asthma. Again, it seems that we can rely on man's best friend to help us out.
- Sujata Gupta
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Research Highlights |
Yeast worsens gut disorder
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Article |
Root microbiota drive direct integration of phosphate stress and immunity
In Arabidopsis thaliana, a genetic network that controls the phosphate stress response also influences the structure of the root microbiome community, even under non-stress phosphate conditions.
- Gabriel Castrillo
- , Paulo José Pereira Lima Teixeira
- & Jeffery L. Dangl
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Research Highlights |
Skin cream kills pathogen
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Letter |
Structural basis for nutrient acquisition by dominant members of the human gut microbiota
The authors present structures of nutrient transport complexes of the commensal bacterium Bacteroides thetaiotaomicron and the mechanism by which it imports glycans.
- Amy J. Glenwright
- , Karunakar R. Pothula
- & Bert van den Berg
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Research Highlights |
Gut microbes shape DNA
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Article |
Persistent microbiome alterations modulate the rate of post-dieting weight regain
The identification of an intestinal microbiome signature that persists after successful dieting in obese mice and contributes to faster weight regain upon re-exposure to an obesity-promoting diet, and that transmits the altered weight regain phenotype to non-dieting mice.
- Christoph A. Thaiss
- , Shlomik Itav
- & Eran Elinav
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Research Highlights |
Low-fibre diet puts gut at risk
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News |
Quest to map Africa’s soil microbiome begins
Sub-Saharan project could one day help ecosystems to resist climate change and improve agriculture.
- Sarah Wild
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Letter |
Microcins mediate competition among Enterobacteriaceae in the inflamed gut
Certain commensal enterobacteria secrete small proteins called microcins that suppress the growth of other bacteria in the inflamed gut, conferring an intra- and interspecies competitive advantage.
- Martina Sassone-Corsi
- , Sean-Paul Nuccio
- & Manuela Raffatellu
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Research Highlights |
Protozoan protects the gut
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Research Highlights |
Gut bacteria help cancer drug
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Letter |
Ecogenomics and potential biogeochemical impacts of globally abundant ocean viruses
The assembly and analysis of complete genomes and large genomic fragments have tripled the number of known ocean viruses and uncovered the potentially important roles they play in nitrogen and sulfur cycling.
- Simon Roux
- , Jennifer R. Brum
- & Matthew B. Sullivan
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Books & Arts |
Microbiology: Mob rule
Adrian Woolfson examines four books on the microbiological universe that churns within us.
- Adrian Woolfson
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News |
The nose knows how to kill MRSA
Bacteria from the human body produce an antibiotic that seems to kill resistant bacteria.
- Anna Nowogrodzki
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News |
Microbiome 'social network' revealed by gene swaps
Movement of genes across and between microorganism species could influence humans’ susceptibility to disease.
- Peter Andrey Smith
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Letter |
Mobile genes in the human microbiome are structured from global to individual scales
Mobile genes, which can be transferred between bacterial species in the microbiome to impart properties such as antibiotic resistance, are reflective of human activity and local diets.
- I. L. Brito
- , S. Yilmaz
- & E. J. Alm
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News & Views |
The dark side of antibiotics
Interactions in the gut between host cells and bacteria can determine a state of health or disease. A study investigates how antibiotic treatment can affect host cells in a way that drives growth of pathogenic bacteria. See Letter p.697
- Thibault G. Sana
- & Denise M. Monack
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Spotlight |
Spotlight on Microbiology
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News & Views |
Rules of the game for microbiota
Are the dynamics of our microbial communities unique to us or does everyone's microbiota follow the same rules? The emerging insights into this question could be of relevance to health and disease. See Letter p.259
- Karoline Faust
- & Jeroen Raes
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Article |
Acetate mediates a microbiome–brain–β-cell axis to promote metabolic syndrome
Increased acetate production by an altered gut microbiota in rats fed a high-fat diet activates the parasympathetic nervous system, which in turn promotes increased insulin secretion, increased food intake, obesity and related changes.
- Rachel J. Perry
- , Liang Peng
- & Gerald I. Shulman
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Letter |
Universality of human microbial dynamics
A new computational method to characterize the dynamics of human-associated microbial communities is applied to data from two large-scale metagenomic studies, and suggests that gut and mouth microbiomes of healthy individuals are subjected to universal (that is, host-independent) dynamics, whereas skin microbiomes are shaped by the host environment; the method paves the way to designing general microbiome-based therapies.
- Amir Bashan
- , Travis E. Gibson
- & Yang-Yu Liu
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News Feature |
The man who can map the chemicals all over your body
Pieter Dorrestein uses mass spectrometry to eavesdrop on the molecular conversations between microbes and their world.
- Paul Tullis
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Letter |
Development of the gut microbiota and mucosal IgA responses in twins and gnotobiotic mice
The relationship between assembly of the gut community and gut mucosal immunoglobulin A responses during the first 24–36 months of postnatal life in a cohort of 40 twin pairs is defined and modelled in gnotobiotic mice.
- Joseph D. Planer
- , Yangqing Peng
- & Jeffrey I. Gordon
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Outlook |
Diet: Food for thought
Many people with irritable bowel syndrome feel that they benefit from dietary interventions, but researchers still lack a full understanding of how food can inflame this disorder.
- Sarah DeWeerdt
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Outlook |
Microbiome: Bacterial broadband
The involvement of intestinal bacteria in gut-brain communication could help to explain the mysteries of irritable bowel syndrome, but the search continues for definitive evidence.
- Michael Eisenstein
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News |
White House goes big on microbiome research
US government and private investors team up for proposed effort to study Earth’s microbes.
- Sara Reardon
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Article |
Interconnected microbiomes and resistomes in low-income human habitats
An analysis of bacterial community structure and antibiotic resistance gene content of interconnected human faecal and environmental samples from two low-income communities in Latin America was carried out using a combination of functional metagenomics, 16S sequencing and shotgun sequencing; resistomes across habitats are generally structured along ecological gradients, but key resistance genes can cross these boundaries, and the authors assessed the usefulness of excreta management protocols in the prevention of resistance gene dissemination.
- Erica C. Pehrsson
- , Pablo Tsukayama
- & Gautam Dantas
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Letter
| Open AccessCulturing of ‘unculturable’ human microbiota reveals novel taxa and extensive sporulation
A novel approach is used to cultivate a substantial proportion of the human gut microbiota, representing an important step forward in characterizing the role of these bacteria in health and disease.
- Hilary P. Browne
- , Samuel C. Forster
- & Trevor D. Lawley
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News & Views |
Mum's microbes boost baby's immunity
The microorganisms that colonize pregnant mice have been shown to prime the innate immune system in newborn offspring, preparing them for life in association with microbes.
- Mihir Pendse
- & Lora V. Hooper
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Letter |
The evolution of cooperation within the gut microbiota
Little is known about cooperative behaviour among the gut microbiota; here, limited cooperation is demonstrated for Bacteroides thetaiotaomicron, but Bacteroides ovatus is found to extracellularly digest a polysaccharide not for its own use, but to cooperatively feed other species such as Bacteroides vulgatus from which it receives return benefits.
- Seth Rakoff-Nahoum
- , Kevin R. Foster
- & Laurie E. Comstock
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News |
Dirty room-mates make lab mice more useful
Housing lab mice with pet-shop mice gives them more human-like immune systems.
- Sara Reardon
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News & Views |
Eating for trillions
Three studies investigate the bacteria in the guts of malnourished children and find that, when this microbiota is transferred into mice, supplements of certain microbes or sugars from human breast milk can restore normal growth.
- Derrick M. Chu
- & Kjersti M. Aagaard
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Research Highlights |
Gut microbes help malnutrition
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News & Views |
Fibre for the future
A chronic lack of dietary fibre has been found to reduce the diversity of bacteria in the guts of mice. This effect is not fully reversed when fibre is reintroduced, and increases in severity over multiple generations. See Letter p.212
- Eric C. Martens
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Letter |
Diet-induced extinctions in the gut microbiota compound over generations
In mice on a low microbiota-accessible carbohydrate (MAC) diet, the diversity of the gut microbiota is depleted, and the effect is transferred and compounded over generations; this phenotype is only reversed after supplementation of the missing taxa via faecal microbiota transplantation, suggesting dietary intervention alone may by insufficient at managing diseases characterized by a dysbiotic microbiota.
- Erica D. Sonnenburg
- , Samuel A. Smits
- & Justin L. Sonnenburg
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News & Views |
A personal forecast
Machine learning, applied to complex multidimensional data, is shown to provide personalized dietary recommendations to control blood glucose levels. This is a step towards integrating the gut microbiome into personalized medicine.
- Erica D. Sonnenburg
- & Justin L. Sonnenburg
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Research Highlights |
Gut bacteria change with cold
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Correspondence |
Microbiome studies need local leaders
- Victor S. Pylro
- , Daniel K. Morais
- & Luiz F. W. Roesch
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Outlook |
Q&A: Cocktail maker
Tim Lu's synthetic-biology research at Massachusetts Institute of Technology in Cambridge combines biological engineering with electronics and computer science to create bacteria that make structural proteins containing tiny semi-conductors called quantum dots. He explains how genome-editing techniques are furthering his research and their role in treating disease.
- Will Tauxe
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News & Views |
Curating communities from plants
Large-scale cultivation and genome sequencing of the bacteria that inhabit the leaves and roots of Arabidopsis plants have paved the way for probing how microbial communities assemble and function. See Article p.364
- Gwyn A. Beattie
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Article |
Functional overlap of the Arabidopsis leaf and root microbiota
The microbiota of the rhizosphere (roots) and phyllosphere (leaves) of healthy plants consist of taxonomically structured bacterial communities; here the majority of species representing the main bacterial phyla from these two organs were isolated and genomes of about 400 representative bacteria were sequenced; the resources of cultured bacteria, corresponding genomes and a gnotobiotic plant system enabled an examination of the taxonomic overlap and functional specialization between the rhizosphere and phyllosphere bacterial microbiota.
- Yang Bai
- , Daniel B. Müller
- & Paul Schulze-Lefert
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Research Highlights |
Personalized diets for health
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News |
Wild toads saved from killer fungal disease
But chemical treatment for chytrid infection may only work in specific habitats.
- Naomi Lubick
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Social Selection |
Scientists debate mega-microbiome initiatives
Research standards will advance the field, proponents say, but critics counter that they will stifle creativity.
- Rachel Becker
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Comment |
Microbiology: Create a global microbiome effort
Understanding how microbes affect health and the biosphere requires an international initiative, argue Nicole Dubilier, Margaret McFall-Ngai and Liping Zhao.
- Nicole Dubilier
- , Margaret McFall-Ngai
- & Liping Zhao
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Outlook |
Q&A: Microbe cheerleader
Richard Roberts shared the 1993 Nobel Prize in Physiology or Medicine with Phillip Sharp for their discoveries of split genes, which contain parts that encode protein, called exons, and gaps between them, called introns. Now chief scientific officer at New England Biolabs based in Ipswich, Massachusetts, Roberts talks to Gijsbert Werner about microbes, genetically modified food and the problem with Nobel prizes.
- Gijsbert Werner
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Letter |
Bacteriocin production augments niche competition by enterococci in the mammalian gastrointestinal tract
The authors develop a mouse model of Enterococcus faecalis colonization to show that enterococci harbouring the bacteriocin-expressing plasmid pPD1 replace indigenous enterococci and have the ability to transfer the plasmid to other enterococci, which enhances the stability of the bacteriocin-expressing bacteria in the gut; this result suggests a therapeutic approach that leverages niche-specificity to eliminate antibiotic-resistant bacteria from infected individuals.
- Sushma Kommineni
- , Daniel J. Bretl
- & Nita H. Salzman