Evidence map›Paper›PMID 34328665›Full record

ArticleMolecular oncology2021

Metagenomic analysis of primary colorectal carcinomas and their metastases identifies potential microbial risk factors.

Luigi Marongiu, Jonathan J M Landry, Tobias Rausch, Mohammed L Abba, Susanne Delecluse, Henri-Jacques Delecluse, Heike Allgayer

Open access · goldAbstract read
In one paragraph

Article in Molecular oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
3.7field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 29 citations in OpenAlex.

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  19. Viruses in colorectal cancer.Molecular oncology · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Luigi MarongiuDepartment of Experimental Surgery - Cancer Metastasis, Medical Faculty Mannheim, Ruprecht-Karls University of Heidelberg, Mannheim, Germany.
Jonathan J M LandryGenomics Core Facility, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.
Tobias RauschGenomics Core Facility, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.ORCID 0000-0001-5773-5620
Mohammed L AbbaDepartment of Experimental Surgery - Cancer Metastasis, Medical Faculty Mannheim, Ruprecht-Karls University of Heidelberg, Mannheim, Germany.
Susanne DelecluseDivision F100, German Cancer Research Center (DKFZ), Heidelberg, Germany.
Henri-Jacques DelecluseDivision F100, German Cancer Research Center (DKFZ), Heidelberg, Germany.
Heike AllgayerDepartment of Experimental Surgery - Cancer Metastasis, Medical Faculty Mannheim, Ruprecht-Karls University of Heidelberg, Mannheim, Germany.ORCID 0000-0003-2192-5101
Heidelberg University · DEEuropean Molecular Biology Laboratory · DEGerman Cancer Research Center · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The paucity of microbiome studies at intestinal tissues has contributed to a yet limited understanding of potential viral and bacterial cofactors of colorectal cancer (CRC) carcinogenesis or progression. We analysed whole-genome sequences of CRC primary tumours, their corresponding metastases and matched normal tissue for sequences of viral, phage and bacterial species. Bacteriome analysis showed Fusobacterium nucleatum, Streptococcus sanguinis, F. Hwasookii, Anaerococcus mediterraneensis and further species enriched in primary CRCs. The primary CRC of one patient was enriched for F. alocis, S. anginosus, Parvimonas micra and Gemella sp. 948. Enrichment of Escherichia coli strains IAI1, SE11, K-12 and M8 was observed in metastases together with coliphages enterobacteria phage φ80 and Escherichia phage VT2φ_272. Virome analysis showed that phages were the most preponderant viral species (46%), the main families being Myoviridae, Siphoviridae and Podoviridae. Primary CRCs were enriched for bacteriophages, showing five phages (Enterobacteria, Bacillus, Proteus, Streptococcus phages) together with their pathogenic hosts in contrast to normal tissues. The most frequently detected, and Blast-confirmed, viruses included human endogenous retrovirus K113, human herpesviruses 7 and 6B, Megavirus chilensis, cytomegalovirus (CMV) and Epstein-Barr virus (EBV), with one patient showing EBV enrichment in primary tumour and metastases. EBV was PCR-validated in 80 pairs of CRC primary tumour and their corresponding normal tissues; in 21 of these pairs (26.3%), it was detectable in primary tumours only. The number of viral species was increased and bacterial species decreased in CRCs compared with normal tissues, and we could discriminate primary CRCs from metastases and normal tissues by applying the Hutcheson t-test on the Shannon indices based on viral and bacterial species. Taken together, our results descriptively support hypotheses on microorganisms as potential (co)risk factors of CRC and extend putative suggestions on critical microbiome species in CRC metastasis.

Indexed as

Colorectal NeoplasmsEpstein-Barr Virus InfectionsMicrobiotaHerpesvirus 4, HumanHumansRisk Factorsbacteriomecolorectal cancermetastasisphagesviruses

Identifiers

PMID34328665
PMCPMC8637581
OpenAlexW3184367583

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.