Alterations in the Gut Virome in Obesity and Type 2 Diabetes Mellitus

Obesity and type 2 diabetes mellitus (T2DM) are associated with changes in the gut bacterial composition, but little is known about the role of the viral community (virome) in disease development. This study aims to characterize the gut virome alterations in obese subjects with or without T2DM. Ther...

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Published inGastroenterology (New York, N.Y. 1943) Vol. 161; no. 4; pp. 1257 - 1269.e13
Main Authors Yang, Keli, Niu, Junkun, Zuo, Tao, Sun, Yang, Xu, Zhilu, Tang, Whitney, Liu, Qin, Zhang, Jingwan, Ng, Enders K.W., Wong, Simon K.H., Yeoh, Yun Kit, Chan, Paul K.S., Chan, Francis K.L., Miao, Yinglei, Ng, Siew C.
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LanguageEnglish
Published United States Elsevier Inc 01.10.2021
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Abstract Obesity and type 2 diabetes mellitus (T2DM) are associated with changes in the gut bacterial composition, but little is known about the role of the viral community (virome) in disease development. This study aims to characterize the gut virome alterations in obese subjects with or without T2DM. There were 128 obese subjects (body mass index ≥28 kg/m2) and 101 lean controls (body mass index ≥18.5 and <23 kg/m2) recruited from 2 regions in China (Hong Kong and Kunming). Fecal virome and bacteriome were profiled by shotgun metagenomic sequencing. Gut virome, bacteriome, and viral-bacterial correlations were compared between obese subjects and lean controls. Obese subjects, especially those with T2DM (ObT2), had a decreased gut viral richness and diversity compared with lean controls in the Hong Kong cohort (P < .05), while no significant differences were observed in the Kunming cohort. Eleven viruses, including Escherichia phage, Geobacillus phage, and Lactobacillus phage were enriched in obese subjects (q < .1). Besides, 17 differentially abundant viruses were identified between ObT2 and lean controls (q < .1). Further ecologic analysis revealed that intensive transkingdom correlations between viruses and bacteria observed in lean controls were significantly decreased in ObT2 subjects (P < .001). Obesity is characterized by altered viral taxonomic composition and weakened viral-bacterial correlations compared with lean controls. Obesity accompanied with T2DM may aggravate the obesity-associated virus signatures, signifying that the gut virome may play an important role in the development of obesity and T2DM. Geographic factors also contributed to the variations of gut virome in obesity and T2DM. [Display omitted] Obese individuals have a dysbiotic gut virome, and type 2 diabetes mellitus further aggravates such dysbiosis.
AbstractList Obesity and type 2 diabetes mellitus (T2DM) are associated with changes in the gut bacterial composition, but little is known about the role of the viral community (virome) in disease development. This study aims to characterize the gut virome alterations in obese subjects with or without T2DM. There were 128 obese subjects (body mass index ≥28 kg/m2) and 101 lean controls (body mass index ≥18.5 and <23 kg/m2) recruited from 2 regions in China (Hong Kong and Kunming). Fecal virome and bacteriome were profiled by shotgun metagenomic sequencing. Gut virome, bacteriome, and viral-bacterial correlations were compared between obese subjects and lean controls. Obese subjects, especially those with T2DM (ObT2), had a decreased gut viral richness and diversity compared with lean controls in the Hong Kong cohort (P < .05), while no significant differences were observed in the Kunming cohort. Eleven viruses, including Escherichia phage, Geobacillus phage, and Lactobacillus phage were enriched in obese subjects (q < .1). Besides, 17 differentially abundant viruses were identified between ObT2 and lean controls (q < .1). Further ecologic analysis revealed that intensive transkingdom correlations between viruses and bacteria observed in lean controls were significantly decreased in ObT2 subjects (P < .001). Obesity is characterized by altered viral taxonomic composition and weakened viral-bacterial correlations compared with lean controls. Obesity accompanied with T2DM may aggravate the obesity-associated virus signatures, signifying that the gut virome may play an important role in the development of obesity and T2DM. Geographic factors also contributed to the variations of gut virome in obesity and T2DM. [Display omitted] Obese individuals have a dysbiotic gut virome, and type 2 diabetes mellitus further aggravates such dysbiosis.
Obesity and type 2 diabetes mellitus (T2DM) are associated with changes in the gut bacterial composition, but little is known about the role of the viral community (virome) in disease development. This study aims to characterize the gut virome alterations in obese subjects with or without T2DM.BACKGROUND & AIMSObesity and type 2 diabetes mellitus (T2DM) are associated with changes in the gut bacterial composition, but little is known about the role of the viral community (virome) in disease development. This study aims to characterize the gut virome alterations in obese subjects with or without T2DM.There were 128 obese subjects (body mass index ≥28 kg/m2) and 101 lean controls (body mass index ≥18.5 and <23 kg/m2) recruited from 2 regions in China (Hong Kong and Kunming). Fecal virome and bacteriome were profiled by shotgun metagenomic sequencing. Gut virome, bacteriome, and viral-bacterial correlations were compared between obese subjects and lean controls.METHODSThere were 128 obese subjects (body mass index ≥28 kg/m2) and 101 lean controls (body mass index ≥18.5 and <23 kg/m2) recruited from 2 regions in China (Hong Kong and Kunming). Fecal virome and bacteriome were profiled by shotgun metagenomic sequencing. Gut virome, bacteriome, and viral-bacterial correlations were compared between obese subjects and lean controls.Obese subjects, especially those with T2DM (ObT2), had a decreased gut viral richness and diversity compared with lean controls in the Hong Kong cohort (P < .05), while no significant differences were observed in the Kunming cohort. Eleven viruses, including Escherichia phage, Geobacillus phage, and Lactobacillus phage were enriched in obese subjects (q < .1). Besides, 17 differentially abundant viruses were identified between ObT2 and lean controls (q < .1). Further ecologic analysis revealed that intensive transkingdom correlations between viruses and bacteria observed in lean controls were significantly decreased in ObT2 subjects (P < .001).RESULTSObese subjects, especially those with T2DM (ObT2), had a decreased gut viral richness and diversity compared with lean controls in the Hong Kong cohort (P < .05), while no significant differences were observed in the Kunming cohort. Eleven viruses, including Escherichia phage, Geobacillus phage, and Lactobacillus phage were enriched in obese subjects (q < .1). Besides, 17 differentially abundant viruses were identified between ObT2 and lean controls (q < .1). Further ecologic analysis revealed that intensive transkingdom correlations between viruses and bacteria observed in lean controls were significantly decreased in ObT2 subjects (P < .001).Obesity is characterized by altered viral taxonomic composition and weakened viral-bacterial correlations compared with lean controls. Obesity accompanied with T2DM may aggravate the obesity-associated virus signatures, signifying that the gut virome may play an important role in the development of obesity and T2DM. Geographic factors also contributed to the variations of gut virome in obesity and T2DM.CONCLUSIONSObesity is characterized by altered viral taxonomic composition and weakened viral-bacterial correlations compared with lean controls. Obesity accompanied with T2DM may aggravate the obesity-associated virus signatures, signifying that the gut virome may play an important role in the development of obesity and T2DM. Geographic factors also contributed to the variations of gut virome in obesity and T2DM.
Obesity and type 2 diabetes mellitus (T2DM) are associated with changes in the gut bacterial composition, but little is known about the role of the viral community (virome) in disease development. This study aims to characterize the gut virome alterations in obese subjects with or without T2DM. There were 128 obese subjects (body mass index ≥28 kg/m ) and 101 lean controls (body mass index ≥18.5 and <23 kg/m ) recruited from 2 regions in China (Hong Kong and Kunming). Fecal virome and bacteriome were profiled by shotgun metagenomic sequencing. Gut virome, bacteriome, and viral-bacterial correlations were compared between obese subjects and lean controls. Obese subjects, especially those with T2DM (ObT2), had a decreased gut viral richness and diversity compared with lean controls in the Hong Kong cohort (P < .05), while no significant differences were observed in the Kunming cohort. Eleven viruses, including Escherichia phage, Geobacillus phage, and Lactobacillus phage were enriched in obese subjects (q < .1). Besides, 17 differentially abundant viruses were identified between ObT2 and lean controls (q < .1). Further ecologic analysis revealed that intensive transkingdom correlations between viruses and bacteria observed in lean controls were significantly decreased in ObT2 subjects (P < .001). Obesity is characterized by altered viral taxonomic composition and weakened viral-bacterial correlations compared with lean controls. Obesity accompanied with T2DM may aggravate the obesity-associated virus signatures, signifying that the gut virome may play an important role in the development of obesity and T2DM. Geographic factors also contributed to the variations of gut virome in obesity and T2DM.
Author Liu, Qin
Sun, Yang
Chan, Paul K.S.
Miao, Yinglei
Ng, Siew C.
Wong, Simon K.H.
Xu, Zhilu
Zuo, Tao
Yeoh, Yun Kit
Niu, Junkun
Tang, Whitney
Yang, Keli
Zhang, Jingwan
Ng, Enders K.W.
Chan, Francis K.L.
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  surname: Ng
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  organization: Center for Gut Microbiota Research, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
BackLink https://www.ncbi.nlm.nih.gov/pubmed/34175280$$D View this record in MEDLINE/PubMed
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Copyright © 2021 AGA Institute. Published by Elsevier Inc. All rights reserved.
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Keywords PCoA
Metagenomics
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KM
ORF
HK
Metabolic Diseases
MDA
PERMANOVA
SCFA
Weight
Microbiota
ObT2
Ob-non-T2
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elsevier_clinicalkey_doi_10_1053_j_gastro_2021_06_056
ProviderPackageCode CITATION
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PublicationCentury 2000
PublicationDate October 2021
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20211001
PublicationDateYYYYMMDD 2021-10-01
PublicationDate_xml – month: 10
  year: 2021
  text: October 2021
PublicationDecade 2020
PublicationPlace United States
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PublicationTitle Gastroenterology (New York, N.Y. 1943)
PublicationTitleAlternate Gastroenterology
PublicationYear 2021
Publisher Elsevier Inc
Publisher_xml – name: Elsevier Inc
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Snippet Obesity and type 2 diabetes mellitus (T2DM) are associated with changes in the gut bacterial composition, but little is known about the role of the viral...
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SubjectTerms Adolescent
Adult
Aged
Case-Control Studies
Diabetes Mellitus, Type 2 - diagnosis
Diabetes Mellitus, Type 2 - microbiology
Diabetes Mellitus, Type 2 - virology
Dysbiosis
Feces - microbiology
Feces - virology
Female
Gastrointestinal Microbiome
Hong Kong
Host-Pathogen Interactions
Humans
Intestines - microbiology
Intestines - virology
Male
Metabolic Diseases
Metagenome
Metagenomics
Microbiota
Middle Aged
Obesity - diagnosis
Obesity - microbiology
Obesity - virology
Virome - genetics
Weight
Young Adult
Title Alterations in the Gut Virome in Obesity and Type 2 Diabetes Mellitus
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https://dx.doi.org/10.1053/j.gastro.2021.06.056
https://www.ncbi.nlm.nih.gov/pubmed/34175280
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