4.8 Article

Profiling Fusobacterium infection at high taxonomic resolution reveals lineage-specific correlations in colorectal cancer

Journal

NATURE COMMUNICATIONS
Volume 13, Issue 1, Pages -

Publisher

NATURE PORTFOLIO
DOI: 10.1038/s41467-022-30957-6

Keywords

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Funding

  1. National Natural Science Foundation of China [82072236, 82072634, 81972221]
  2. Clinical Research Plan of SHDC [SHDC2020CR2069B]
  3. Pandeng Research Foundation of Shanghai Tenth People's Hospital [2018SYPDRC015]
  4. Shanghai Rising Stars of Medical Talent Youth Development Programme

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This study identified Fusobacterium species and subspecies in CRC patient samples using a new sequencing method. They found that certain species are associated with CRC in tumor samples and feces. Additionally, different Fusobacterium lineages may play different functional roles in CRC.
The bacterial genus Fusobacterium promotes colorectal cancer (CRC) development, but an understanding of its precise composition at the species level in the human gut and the relevant association with CRC is lacking. Herein, we devise a Fusobacterium rpoB amplicon sequencing (FrpoB-seq) method that enables the differentiation of Fusobacterium species and certain subspecies in the microbiota. By applying this method to clinical tissue and faecal samples from CRC patients, we detect 62 Fusobacterium species, including 45 that were previously undescribed. We additionally reveal that Fusobacterium species may display different lineage-dependent functions in CRC. Specifically, a lineage (designated L1) including F. nucleatum, F. hwasookii, F. periodonticum and their relatives (rather than any particular species alone) is overabundant in tumour samples and faeces from CRC patients, whereas a non-enriched lineage (designated L5) represented by F. varium and F. ulcerans in tumours has a positive association with lymphovascular invasion. Bacteria from the genus Fusobacterium can promote colorectal cancer (CRC) development; however, the exact Fusobacterium species involved in this process remain underexplored. Here, the authors develop a rpoB amplicon sequencing approach to identify Fusobacterium species and subspecies in CRC patient samples.

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