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  • Thorell, Kaisa,1983Karolinska Institutet,Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för mikrobiologi och immunologi,Institute of Biomedicine, Department of Microbiology and Immunology (author)

In vivo analysis of the viable microbiota and Helicobacter pylori transcriptome in gastric infection and early stages of carcinogenesis

  • Article/chapterEnglish2017

Publisher, publication year, extent ...

  • 2017

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:a3371523-91a3-4dae-a750-ae1dac73b5c9
  • https://doi.org/10.1128/IAI.00031-17DOI
  • https://research.chalmers.se/publication/253649URI
  • https://gup.ub.gu.se/publication/255964URI
  • http://kipublications.ki.se/Default.aspx?queryparsed=id:137066179URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Emerging evidence shows that the human microbiota plays a larger role in disease progression and health than previously anticipated. Helicobacter pylori, the causative agent of gastric cancer and duodenal and gastric ulcers, was early associated with gastric disease, but it has also been proposed that the accompanying microbiota in Helicobacter pylori-infected individuals might affect disease progression and gastric cancer development. In this study, the composition of the transcriptionally active microbial community and H. pylori gene expression were determined using metatranscriptomic RNA sequencing of stomach biopsy specimens from individuals with different H. pylori infection statuses and premalignant tissue changes. The results show that H. pylori completely dominates the microbiota not only in infected individuals but also in most individuals classified as H. pylori uninfected using conventional methods. Furthermore, H. pylori abundance is positively correlated with the presence of Campylobacter, Deinococcus, and Sulfurospirillum. Finally, we quantified the expression of a large number of Helicobacter pylori genes and found high expression of genes involved in pH regulation and nickel transport. Our study is the first to dissect the viable microbiota of the human stomach by metatranscriptomic analysis, and it shows that metatranscriptomic analysis of the gastric microbiota is feasible and can provide new insights into how bacteria respond in vivo to variations in the stomach microenvironment and at different stages of disease progression.

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  • Bengtsson-Palme, Johan,1985Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för infektionssjukdomar,Institute of Biomedicine, Department of Infectious Medicine(Swepub:gu)xbengg (author)
  • Liu, Oscar Hsin FuGothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för mikrobiologi och immunologi,Institute of Biomedicine, Department of Microbiology and Immunology (author)
  • Gonzales, Reyna Victoria PalaciosSalud Integral Hospital (author)
  • Nookaew, Intawat,1977Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)intawat (author)
  • Rabeneck, L.University of Toronto (author)
  • Paszat, L.University of Toronto (author)
  • Graham, D. Y.Baylor College of Medicine (author)
  • Nielsen, Jens B,1962Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)nielsenj (author)
  • Lundin, Samuel B,1970Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för mikrobiologi och immunologi,Institute of Biomedicine, Department of Microbiology and Immunology(Swepub:gu)xlusam (author)
  • Sjöling, Åsa,1968Karolinska Institutet,Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för mikrobiologi och immunologi,Institute of Biomedicine, Department of Microbiology and Immunology(Swepub:gu)xsjoas (author)
  • Göteborgs universitetInstitutionen för biomedicin, avdelningen för mikrobiologi och immunologi (creator_code:org_t)

Related titles

  • In:Infection and Immunity85:101098-55220019-9567

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