Alterations in colorectal cancer virome and its persistence after surgery.

Autor: Ho SX; Laboratory of Molecular RNA Virology and Antiviral Strategies, Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore.; Infectious Disease Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore., Law JH; Division of Colorectal Surgery, Department of Surgery, National University Hospital, 1E, Kent Ridge Road, NUHS Tower Block, Level 8, Singapore, 119228, Singapore., Png CW; Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore., Alberts R; Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore., Zhang Y; Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore., Chu JJH; Laboratory of Molecular RNA Virology and Antiviral Strategies, Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore.; Infectious Disease Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117597, Singapore., Tan KK; Division of Colorectal Surgery, Department of Surgery, National University Hospital, 1E, Kent Ridge Road, NUHS Tower Block, Level 8, Singapore, 119228, Singapore. surtkk@nus.edu.sg.; Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore. surtkk@nus.edu.sg.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Feb 03; Vol. 14 (1), pp. 2819. Date of Electronic Publication: 2024 Feb 03.
DOI: 10.1038/s41598-024-53041-z
Abstrakt: Viruses are a key component of the colon microbiome, but the relationship between virome and colorectal cancer (CRC) remains poorly understood. We seek to identify alterations in the viral community that is characteristic of CRC and examine if they persist after surgery. Forty-nine fecal samples from 25 non-cancer (NC) individuals and 12 CRC patients, before and 6-months after surgery, were collected for metagenomic analysis. The fecal virome of CRC patients demonstrated an increased network connectivity as compared to NC individuals. Co-exclusion of influential viruses to bacterial species associated with healthy gut status was observed in CRC, suggesting an altered virome induced a change in the healthy gut bacteriome. Network analysis revealed lower connectivity within the virome and trans-kingdom interactions in NC. After surgery, the number of strong correlations decreased for trans-kingdom and within the bacteria and virome networks, indicating lower connectivity within the microbiome. Some co-occurrence patterns between dominant viruses and bacteria were also lost after surgery, suggesting a possible return to the healthy state of gut microbiome. Microbial signatures characteristic of CRC include an altered virome besides an altered bacterial composition. Elevated viral correlations and network connectivity were observed in CRC patients relative to healthy individuals, alongside distinct changes in the cross-kingdom correlation network unique to CRC patients. Some patterns of dysbiosis persist after surgery. Future studies should seek to verify if dysbiosis truly persists after surgery in a larger sample size with microbiome data collected at various time points after surgery to explore if there is field-change in the remaining colon, as well as to examine if persistent dysbiosis correlates with patient outcomes.
(© 2024. The Author(s).)
Databáze: MEDLINE
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