Alterations in the gut microbiota and their metabolites in human intestinal epithelial cells of patients with colorectal cancer.

CRC Colorectal cancer Gut microbiota Metabolome

Journal

Molecular biology reports
ISSN: 1573-4978
Titre abrégé: Mol Biol Rep
Pays: Netherlands
ID NLM: 0403234

Informations de publication

Date de publication:
01 Feb 2024
Historique:
received: 07 11 2023
accepted: 19 01 2024
medline: 2 2 2024
pubmed: 2 2 2024
entrez: 1 2 2024
Statut: epublish

Résumé

The gut microbiota has become one of the main risk factors for the formation and development of colorectal cancer (CRC). CRC intensification may be due to the microbial pathogens' colonization and their released metabolites. Here, we analyzed Bacteroidetes and Clostridia bacteria in CRC patients and studied bacterial metabolome in cancerous tissues compared to their adjacent normal tissues. The population of selected bacteria in biopsy specimens of 30 patients with CRC was studied by RT-qPCR. The mutagenicity and cytotoxicity effects of microbiota metabolites were evaluated by Ames test and MTT Assay, respectively. Moreover, gene expression in carcinogenic pathways was studied by RT-qPCR, and genes with different expressions in tumor and non-tumor tissues were diagnosed. Based on microbiota analysis, the relative abundance of Clostridia and C. difficile was significantly higher in CRC tissue, whereas C. perfringens showed higher relative abundance in normal tissue. AIMES test confirmed the proliferation and mutagenicity effects of the bacterial metabolites in CRC patients. Significant upregulation of C-Myc, GRB2, IL-8, EGFR, PI3K, and AKT and downregulation of ATM were observed in CRC samples compared to the control. The influence of bacterial metabolites on inflammation and altered expression of genes in the cell signaling pathways was observed. The findings confirm the role gut microbiota composition and bacterial metabolites as key players in CRC onset and development.

Sections du résumé

BACKGROUND BACKGROUND
The gut microbiota has become one of the main risk factors for the formation and development of colorectal cancer (CRC). CRC intensification may be due to the microbial pathogens' colonization and their released metabolites. Here, we analyzed Bacteroidetes and Clostridia bacteria in CRC patients and studied bacterial metabolome in cancerous tissues compared to their adjacent normal tissues.
METHODS AND RESULTS RESULTS
The population of selected bacteria in biopsy specimens of 30 patients with CRC was studied by RT-qPCR. The mutagenicity and cytotoxicity effects of microbiota metabolites were evaluated by Ames test and MTT Assay, respectively. Moreover, gene expression in carcinogenic pathways was studied by RT-qPCR, and genes with different expressions in tumor and non-tumor tissues were diagnosed. Based on microbiota analysis, the relative abundance of Clostridia and C. difficile was significantly higher in CRC tissue, whereas C. perfringens showed higher relative abundance in normal tissue. AIMES test confirmed the proliferation and mutagenicity effects of the bacterial metabolites in CRC patients. Significant upregulation of C-Myc, GRB2, IL-8, EGFR, PI3K, and AKT and downregulation of ATM were observed in CRC samples compared to the control.
CONCLUSIONS CONCLUSIONS
The influence of bacterial metabolites on inflammation and altered expression of genes in the cell signaling pathways was observed. The findings confirm the role gut microbiota composition and bacterial metabolites as key players in CRC onset and development.

Identifiants

pubmed: 38302841
doi: 10.1007/s11033-024-09273-3
pii: 10.1007/s11033-024-09273-3
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

265

Informations de copyright

© 2024. The Author(s), under exclusive licence to Springer Nature B.V.

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Auteurs

Somayeh Jahani-Sherafat (S)

Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Shahid Arabi Ave., Yemen St, Velenjak, Tehran, Iran.
Laser Application in Medical Sciences Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Microbiology Department, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.

Masoumeh Azimirad (M)

Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Shahid Arabi Ave., Yemen St, Velenjak, Tehran, Iran.

Hamideh Raeisi (H)

Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Shahid Arabi Ave., Yemen St, Velenjak, Tehran, Iran.

Mehdi Azizmohammad Looha (M)

Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Sajjad Tavakkoli (S)

Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Hamed Ahmadi Amoli (H)

Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran.

Sharareh Moghim (S)

Microbiology Department, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.

Mohammad Rostami-Nejad (M)

Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran. m.rostamii@gmail.com.
Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran. m.rostamii@gmail.com.
Celiac Disease and Gluten Related Disorders Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. m.rostamii@gmail.com.

Abbas Yadegar (A)

Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Shahid Arabi Ave., Yemen St, Velenjak, Tehran, Iran. a.yadegar@sbmu.ac.ir.

Mohammad Reza Zali (MR)

Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Classifications MeSH