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Teng NMY, Kiu R, Evans R, Baker DJ, Zenner C, Robinson SD, Hall LJ. Allocoprobacillus halotolerans gen. nov., sp. nov and Coprobacter tertius sp. nov., isolated from human gut microbiota. Int J Syst Evol Microbiol 2023; 73. [PMID: 37417270 DOI: 10.1099/ijsem.0.005950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023] Open
Abstract
Two novel bacterial isolates were cultured from faecal samples of patients attending the Breast Care clinic at the Norwich and Norfolk University Hospital. Strain LH1062T was isolated from a 58-year-old female diagnosed with invasive adenocarcinoma with ductal carcinoma in situ. Strain LH1063T was isolated from a healthy 51-year-old female. Isolate LH1062T was predicted to be a potential novel genus most closely related to Coprobacillus, whilst LH1063T was predicted to be a novel species belonging to Coprobacter. Both strains were characterized by polyphasic approaches including 16S rRNA gene analysis, core-genome analysis, average nucleotide identity (ANI) comparisons and phenotypic analysis. Initial screening of the 16S rRNA gene of LH1062T returned a nucleotide identity of 93.4 % to Longibaculum muris. For LH1063T, nucleotide identity was a 92.6 % to Coprobacter secundus. Further investigations showed that LH1062T had a genome size of 2.9 Mb and G+C content of 31.3 mol %. LH1063T had a genome size of 3.3Mb and G+C content of 39.2 mol %. Digital DNA-DNA hybridization (dDDH) and ANI values of LH1062T with its closest relative, Coprobacillus cateniformis JCM 10604T, were 20.9 and 79.54 %, respectively. For LH1063T, the dDDH and ANI values with its closest relative, Coprobacter secundus 177T, were 19.3 and 77.81 %, respectively. Phenotypic testing confirmed that LH1062T could not be matched to a known validly published isolate in any database; thereby indicating a novel genus for which the name Allocoprobacillus gen. nov. is now proposed with LH1062T (=DSM 114537T=NCTC 14686T) being the type strain of the proposed novel species Allocoprobacillus halotolerans sp. nov. Strain LH1063T (=DSM 114538T=NCTC 14698T) fits within the genus Coprobacter and, it being the third species within this genus, the name Coprobacter tertius sp. nov. is proposed.
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Affiliation(s)
- Nancy M Y Teng
- Gut Microbes & Health, Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Raymond Kiu
- Gut Microbes & Health, Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - Rhiannon Evans
- Gut Microbes & Health, Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - David J Baker
- Gut Microbes & Health, Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
| | - Christian Zenner
- Intestinal Microbiome, School of Life Sciences, ZIEL-Institute for Food & Health, Technical University of Munich, Freising, Germany
| | - Stephen D Robinson
- Gut Microbes & Health, Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Lindsay J Hall
- Gut Microbes & Health, Quadram Institute Bioscience, Norwich Research Park, Norwich, UK
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, UK
- Intestinal Microbiome, School of Life Sciences, ZIEL-Institute for Food & Health, Technical University of Munich, Freising, Germany
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Teng NMY, Price CA, McKee AM, Hall LJ, Robinson SD. Exploring the impact of gut microbiota and diet on breast cancer risk and progression. Int J Cancer 2021; 149:494-504. [PMID: 33521932 PMCID: PMC8650995 DOI: 10.1002/ijc.33496] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/23/2020] [Accepted: 01/22/2021] [Indexed: 12/20/2022]
Abstract
There is emerging evidence that resident microbiota communities, that is, the microbiota, play a key role in cancer outcomes and anticancer responses. Although this has been relatively well studied in colorectal cancer and melanoma, other cancers, such as breast cancer (BrCa), have been largely overlooked to date. Importantly, many of the environmental factors associated with BrCa incidence and progression are also known to impact the microbiota, for example, diet and antibiotics. Here, we explore BrCa risk factors from large epidemiology studies and microbiota associations, and more recent studies that have directly profiled BrCa patients' gut microbiotas. We also discuss how in vivo studies have begun to unravel the immune mechanisms whereby the microbiota may influence BrCa responses, and finally we examine how diet and specific nutrients are also linked to BrCa outcomes. We also consider future research avenues and important considerations with respect to study design and implementation, and we highlight some of the important unresolved questions, which currently limit our overall understanding of the mechanisms underpinning microbiota-BrCa responses.
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Affiliation(s)
- Nancy M. Y. Teng
- Gut Microbes & HealthQuadram Institute Bioscience, Norwich Research ParkNorwichUK
| | - Christopher A. Price
- Gut Microbes & HealthQuadram Institute Bioscience, Norwich Research ParkNorwichUK
| | - Alastair M. McKee
- Gut Microbes & HealthQuadram Institute Bioscience, Norwich Research ParkNorwichUK
| | - Lindsay J. Hall
- Gut Microbes & HealthQuadram Institute Bioscience, Norwich Research ParkNorwichUK
- Norwich Medical SchoolUniversity of East Anglia, Norwich Research ParkNorwichUK
- Chair of Intestinal Microbiome, School of Life Sciences, ZIEL‐Institute for Food & HealthTechnical University of MunichFreisingGermany
| | - Stephen D. Robinson
- Gut Microbes & HealthQuadram Institute Bioscience, Norwich Research ParkNorwichUK
- School of Biological SciencesUniversity of East Anglia, Norwich Research ParkNorwichUK
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