Intestinal Microbiota Is Altered in Patients with Gastric Cancer from Shanxi Province, China
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Study information
-
Quality control
- Retracted paper
- Contamination issues suspected
- Batch effect issues suspected
- Uncontrolled confounding suspected
- Results are suspect (various reasons)
- Tags applied
study design
Citation
PMID PubMed identifier for scientific articles.
DOI Digital object identifier for electronic documents.
URI
Authors
Qi YF, Sun JN, Ren LF, Cao XL, Dong JH, Tao K, Guan XM, Cui YN, Su W
Journal
Digestive diseases and sciences
Year
2019
Keywords:
Cellular immunity, Gastric cancer, Intestinal microbiota, Shanxi Province
BACKGROUND: Many diseases have been associated with intestinal microbial dysbiosis. Host-microbial interactions regulate immune function, which influences the development of gastric cancer. AIMS: The aims were to investigate the characteristics of intestinal microbiota composition in gastric cancer patients and correlations between the intestinal microbiota and cellular immunity. METHODS: Fecal samples were collected from 116 gastric cancer patients and 88 healthy controls from Shanxi Province, China. The intestinal microbiota was investigated by 16S rRNA gene sequencing. Peripheral blood samples were also collected from the 66 gastric cancer patients and 46 healthy controls. The populations of peripheral T lymphocyte subpopulations and NK cells were analyzed by flow cytometry. RESULTS: The intestinal microbiota in gastric cancer patients was characterized by increased species richness, decreased butyrate-producing bacteria, and the enrichment of other symbiotic bacteria, especially Lactobacillus, Escherichia, and Klebsiella. Lactobacillus and Lachnospira were key species in the network of gastric cancer-associated bacterial genera. The combination of the genera Lachnospira, Lactobacillus, Streptococcus, Veillonella, and Tyzzerella_3 showed good performance in distinguishing gastric cancer patients from healthy controls. There was no significant difference in enterotype distribution between healthy controls and gastric cancer patients. The percentage of CD3+ T cells was positively correlated with the abundance of Lactobacillus and Streptococcus, and CD3+ T cells, CD4+ T cells, and NK cells were associated with Lachnospiraceae taxa. CONCLUSIONS: Our study revealed a dysbiotic intestinal microbiota in gastric cancer patients. The abundance of some intestinal bacterial genera was correlated with the population of peripheral immune cells.
Experiment 1
Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09
Subjects
- Location of subjects
- China
- Host species Species from which microbiome was sampled. Contact us to have more species added.
- Homo sapiens
- Body site Anatomical site where microbial samples were extracted from according to the Uber Anatomy Ontology
- Feces Cow dung,Cow pat,Droppings,Dung,Excrement,Excreta,Faeces,Fecal material,Fecal matter,Fewmet,Frass,Guano,Matières fécales@fr,Merde@fr,Ordure,Partie de la merde@fr,Piece of shit,Porción de mierda@es,Portion of dung,Portion of excrement,Portion of faeces,Portion of fecal material,Portion of fecal matter,Portion of feces,Portion of guano,Portion of scat,Portionem cacas,Scat,Spoor,Spraint,Stool,Teil der fäkalien@de,Feces,feces
- Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
- Gastric adenocarcinoma adenocarcinoma - stomach,adenocarcinoma of stomach,adenocarcinoma of the stomach,gastric (stomach) adenocarcinoma,gastric adenocarcinoma,STAD,stomach adenocarcinoma,Gastric adenocarcinoma
- Group 0 name Corresponds to the control (unexposed) group for case-control studies
- healthy controls
- Group 1 name Corresponds to the case (exposed) group for case-control studies
- Gastric cancer
- Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
- gastric carcinoma confirmed by pathological examination
- Group 0 sample size Number of subjects in the control (unexposed) group
- 88
- Group 1 sample size Number of subjects in the case (exposed) group
- 116
- Antibiotics exclusion Number of days without antibiotics usage (if applicable) and other antibiotics-related criteria used to exclude participants (if any)
- 1 month
Lab analysis
- Sequencing type
- 16S
- 16S variable region One or more hypervariable region(s) of the bacterial 16S gene
- V3-V4
- Sequencing platform Manufacturer and experimental platform used for quantifying microbial abundance
- Illumina
Statistical Analysis
- Statistical test
- LEfSe
- Significance threshold p-value or FDR threshold used for differential abundance testing (if any)
- 0.05
- MHT correction Have statistical tests be corrected for multiple hypothesis testing (MHT)?
- No
- LDA Score above Threshold for the linear discriminant analysis (LDA) score for studies using the popular LEfSe tool
- 3.5
Alpha Diversity
- Shannon Estimator of species richness and species evenness: more weight on species richness
- unchanged
Signature 1
Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09
Source: Figure 4
Description: Most differentially abundant taxa between healthy controls and gastric cancer patients
Abundance in Group 1: increased abundance in Gastric cancer
Revision editor(s): WikiWorks
Signature 2
Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09
Source: Figure 4
Description: Most differentially abundant taxa between healthy controls and gastric cancer patients
Abundance in Group 1: decreased abundance in Gastric cancer
| NCBI | Quality Control | Links |
|---|---|---|
| Eubacteriales | ||
| Clostridia | ||
| Bacillota | ||
| Lachnospiraceae | ||
| Faecalibacterium | ||
| Agathobacter rectalis CAG:36 | ||
| Oscillospiraceae | ||
| Roseburia | ||
| Lachnospira | ||
| Lachnoclostridium |
Revision editor(s): WikiWorks
Experiment 2
Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09
Differences from previous experiment shown
Subjects
- Group 0 sample size Number of subjects in the control (unexposed) group
- 48
- Group 1 sample size Number of subjects in the case (exposed) group
- 48
Lab analysis
Statistical Analysis
- Matched on Factors on which subjects have been matched on in a case-control study
- age, sex
Alpha Diversity
- Shannon Estimator of species richness and species evenness: more weight on species richness
- unchanged
Signature 1
Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09
Source: Supplementary figure 3
Description: Most differentially abundant taxa between healthy controls and gastric cancer patients who are age and sex matched
Abundance in Group 1: increased abundance in Gastric cancer
Revision editor(s): WikiWorks
Signature 2
Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09
Source: Supplementary figure 3
Description: Most differentially abundant taxa between healthy controls and gastric cancer patients who are age and sex matched
Abundance in Group 1: decreased abundance in Gastric cancer
| NCBI | Quality Control | Links |
|---|---|---|
| Burkholderiales | ||
| Betaproteobacteria | ||
| Clostridia | ||
| Eubacteriales | ||
| Lachnospiraceae | ||
| Agathobacter rectalis CAG:36 | ||
| Roseburia | ||
| Lachnospira | ||
| Lachnoclostridium |
Revision editor(s): WikiWorks
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