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Blood Bacterial DNA Load and Profiling Differ in Colorectal Cancer Patients Compared to Tumor-Free Controls

by Primignani, Massimo , Petrocelli, Giulio , Bertuccio, Paola , Penagini, Roberto , Cantù, Paolo , Leone, Pierfrancesco , Soru, Pietro , Speciani, Michela C. , Caprioli, Flavio , Forti, Edoardo , Bonato, Giulia , Ciafardini, Clorinda , Pugliese, Francesco , Rossi, Marta , Mascaretti, Federica , Airoldi, Aldo , Dioscoridi, Lorenzo , La Vecchia, Carlo , Mutignani, Massimiliano , Cintolo, Marcello , Bini, Marta , Cavalcoli, Federica , Mazza, Stefano , Gargari, Giorgio , Vecchi, Maurizio , Ferrari, Giovanni , Guglielmetti, Simone , Carnevali, Pietro , Magistro, Carmelo , Tosetti, Giulia , Vangeli, Marcello , Oreggia, Barbara , Bonzi, Rossella

in Accuracy / Adenoma / Bacteria / Colon cancer / Colorectal cancer / Colorectal carcinoma / Deoxyribonucleic acid / Digestive system / DNA / DNA fingerprinting / Epidemiology / Gastrointestinal tract / Inflammation / Intestinal microflora / Intestine / Metagenomics / Microbiomes / Microbiota / Mortality / Peripheral blood / Permeability / rRNA 16S / Taxonomy / Trends / Tumors

2021

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Blood Bacterial DNA Load and Profiling Differ in Colorectal Cancer Patients Compared to Tumor-Free Controls

2021

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Blood Bacterial DNA Load and Profiling Differ in Colorectal Cancer Patients Compared to Tumor-Free Controls

2021

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Journal Article

Blood Bacterial DNA Load and Profiling Differ in Colorectal Cancer Patients Compared to Tumor-Free Controls

Primignani, Massimo,

Petrocelli, Giulio,

Bertuccio, Paola,

Penagini, Roberto,

Cantù, Paolo,

Leone, Pierfrancesco,

Soru, Pietro,

Speciani, Michela C.,

Caprioli, Flavio,

Forti, Edoardo,

Bonato, Giulia,

Ciafardini, Clorinda,

Pugliese, Francesco,

Rossi, Marta,

Mascaretti, Federica,

Airoldi, Aldo,

Dioscoridi, Lorenzo,

La Vecchia, Carlo,

Mutignani, Massimiliano,

Cintolo, Marcello,

Bini, Marta,

Cavalcoli, Federica,

Mazza, Stefano,

Gargari, Giorgio,

Vecchi, Maurizio,

Ferrari, Giovanni,

Guglielmetti, Simone,

Carnevali, Pietro,

Magistro, Carmelo,

Tosetti, Giulia,

Vangeli, Marcello,

Oreggia, Barbara,

Bonzi, Rossella

2021

Overview

Inflammation and immunity are linked to intestinal adenoma (IA) and colorectal cancer (CRC) development. The gut microbiota is associated with CRC risk. Epithelial barrier dysfunction can occur, possibly leading to increased intestinal permeability in CRC patients. We conducted a case-control study including 100 incident histologically confirmed CRC cases, and 100 IA and 100 healthy subjects, matched to cases by center, sex and age. We performed 16S rRNA gene analysis of blood and applied conditional logistic regression. Further analyses were based on negative binomial distribution normalization and Random Forest algorithm. We found an overrepresentation of blood 16S rRNA gene copies in colon cancer as compared to tumor-free controls. For high levels of gene copies, community diversity was higher in colon cancer cases than controls. Bacterial taxa and operational taxonomic unit abundances were different between groups and were able to predict CRC with an accuracy of 0.70. Our data support the hypothesis of a higher passage of bacteria from gastrointestinal tract to bloodstream in colon cancer. This result can be applied on non-invasive diagnostic tests for colon cancer control.

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Publisher

MDPI AG,MDPI

Subject

/ Adenoma

/ Colorectal carcinoma

/ Deoxyribonucleic acid