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Romero-Rodríguez A, Ruíz-Villafán B, Sánchez S, Paredes-Sabja D. Is there a role for intestinal sporobiota in the antimicrobial resistance crisis? Microbiol Res 2024; 288:127870. [PMID: 39173554 DOI: 10.1016/j.micres.2024.127870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 07/23/2024] [Accepted: 08/06/2024] [Indexed: 08/24/2024]
Abstract
Antimicrobial resistance (AMR) is a complex issue requiring specific, multi-sectoral measures to slow its spread. When people are exposed to antimicrobial agents, it can cause resistant bacteria to increase. This means that the use, misuse, and excessive use of antimicrobial agents exert selective pressure on bacteria, which can lead to the development of "silent" reservoirs of antimicrobial resistance genes. These genes can later be mobilized into pathogenic bacteria and contribute to the spread of AMR. Many socioeconomic and environmental factors influence the transmission and dissemination of resistance genes, such as the quality of healthcare systems, water sanitation, hygiene infrastructure, and pollution. The sporobiota is an essential part of the gut microbiota that plays a role in maintaining gut homeostasis. However, because spores are highly transmissible and can spread easily, they can be a vector for AMR. The sporobiota resistome, particularly the mobile resistome, is important for tracking, managing, and limiting the spread of antimicrobial resistance genes among pathogenic and commensal bacterial species.
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Affiliation(s)
- A Romero-Rodríguez
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México, Ciudad de México 04510, Mexico.
| | - B Ruíz-Villafán
- Laboratorio de Microbiología Industrial. Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - S Sánchez
- Laboratorio de Microbiología Industrial. Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - D Paredes-Sabja
- Department of Biology, Texas A&M University, College Station, TX 77843, USA
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Rajova J, Zeman M, Seidlerova Z, Vlasatikova L, Matiasovicova J, Sebkova A, Faldynova M, Prikrylova H, Karasova D, Crhanova M, Kulich P, Babak V, Volf J, Rychlik I. In Vivo Expression of Chicken Gut Anaerobes Identifies Carbohydrate- or Amino Acid-Utilising, Motile or Type VI Secretion System-Expressing Bacteria. Int J Mol Sci 2024; 25:6505. [PMID: 38928209 PMCID: PMC11204068 DOI: 10.3390/ijms25126505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/05/2024] [Accepted: 06/09/2024] [Indexed: 06/28/2024] Open
Abstract
Complex gut microbiota increases chickens' resistance to enteric pathogens. However, the principles of this phenomenon are not understood in detail. One of the possibilities for how to decipher the role of gut microbiota in chickens' resistance to enteric pathogens is to systematically characterise the gene expression of individual gut microbiota members colonising the chicken caecum. To reach this aim, newly hatched chicks were inoculated with bacterial species whose whole genomic sequence was known. Total protein purified from the chicken caecum was analysed by mass spectrometry, and the obtained spectra were searched against strain-specific protein databases generated from known genomic sequences. Campylobacter jejuni, Phascolarctobacterium sp. and Sutterella massiliensis did not utilise carbohydrates when colonising the chicken caecum. On the other hand, Bacteroides, Mediterranea, Marseilla, Megamonas, Megasphaera, Bifidobacterium, Blautia, Escherichia coli and Succinatimonas fermented carbohydrates. C. jejuni was the only motile bacterium, and Bacteroides mediterraneensis expressed the type VI secretion system. Classification of in vivo expression is key for understanding the role of individual species in complex microbial populations colonising the intestinal tract. Knowledge of the expression of motility, the type VI secretion system, and preference for carbohydrate or amino acid fermentation is important for the selection of bacteria for defined competitive exclusion products.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Ivan Rychlik
- Veterinary Research Institute, CZ6210 Brno, Czech Republic; (J.R.); (M.Z.); (Z.S.); (L.V.); (J.M.); (A.S.); (M.F.); (H.P.); (D.K.); (M.C.); (P.K.); (V.B.); (J.V.)
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Imamura Y, Motooka D, Nakajima Y, Ito S, Kitakaze M, Iida T, Nakamura S. Turicibacter faecis sp. nov., isolated from faeces of heart failure mouse model. Int J Syst Evol Microbiol 2024; 74:006379. [PMID: 38722758 PMCID: PMC11165905 DOI: 10.1099/ijsem.0.006379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 04/28/2024] [Indexed: 06/13/2024] Open
Abstract
Strain TC023T, a Gram-positive, long, rod-shaped, spore-forming anaerobe, was isolated from the faeces of a heart failure mouse model. The strain formed greyish-white coloured colonies with a convex elevation on brain-heart infusion medium supplemented with 0.1 % sodium taurocholate, incubated at 37 °C for 2 days. Taxonomic analysis based on the 16S rRNA gene sequence showed that TC023T belonged to the genus Turicibacter, and was closely related to Turicibacter bilis MMM721T (97.6 %) and Turicibacter sanguinis MOL361T (97.4 %). The whole genome of the strain has a G+C content of 37.3 mol%. The average nucleotide identity and genome-to-genome distance between TC023T and Turicibacter bilis MMM721T were 77.6 % and 24.3 %, respectively, and those with Turicibacter sanguinis MOL361T were 75.4 % and 24.3 %, respectively. These genotypic, phenotypic, and biochemical analyses indicated that the isolate represents a novel species in the genus Turicibacter, and the name Turicibacter faecis sp. nov. is proposed. The type strain is TC023T (RIMD 2002001T=TSD 372T).
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Affiliation(s)
- Yuko Imamura
- Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Daisuke Motooka
- Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
- NGS Core Facility, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
- BIKEN-RIMD NGS Laboratory, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Japan
| | - Yuri Nakajima
- Department of Clinical Research and Development, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Shin Ito
- Department of Clinical Research and Development, National Cerebral and Cardiovascular Center, Suita, Japan
- Department of Heart Failure and Transplant, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Masafumi Kitakaze
- Hanwa Memorial Hospital, Osaka, Japan
- The Osaka Medical Research Foundation for Intractable Diseases, Osaka, Japan
| | - Tetsuya Iida
- Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
- BIKEN-RIMD NGS Laboratory, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Shota Nakamura
- Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
- NGS Core Facility, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Japan
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Ingribelli E, Modrackova N, Tejnecky V, Killer J, Schwab C, Neuzil-Bunesova V. Culture-dependent screening of endospore-forming clostridia in infant feces. BMC Microbiol 2023; 23:347. [PMID: 37978420 PMCID: PMC10655253 DOI: 10.1186/s12866-023-03104-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 11/02/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND Only a few studies dealt with the occurrence of endospore-forming clostridia in the microbiota of infants without obvious health complications. METHODS A methodology pipeline was developed to determine the occurrence of endospore formers in infant feces. Twenty-four fecal samples (FS) were collected from one infant in monthly intervals and were subjected to variable chemical and heat treatment in combination with culture-dependent analysis. Isolates were identified by MALDI-TOF mass spectrometry, 16S rRNA gene sequencing, and characterized with biochemical assays. RESULTS More than 800 isolates were obtained, and a total of 21 Eubacteriales taxa belonging to the Clostridiaceae, Lachnospiraceae, Oscillospiraceae, and Peptostreptococcaceae families were detected. Clostridium perfringens, C. paraputrificum, C. tertium, C. symbiosum, C. butyricum, and C. ramosum were the most frequently identified species compared to the rarely detected Enterocloster bolteae, C. baratii, and C. jeddahense. Furthermore, the methodology enabled the subsequent cultivation of less frequently detectable gut taxa such as Flavonifractor plautii, Intestinibacter bartlettii, Eisenbergiella tayi, and Eubacterium tenue. The isolates showed phenotypic variability regarding enzymatic activity, fermentation profiles, and butyrate production. CONCLUSIONS Taken together, this approach suggests and challenges a cultivation-based pipeline that allows the investigation of the population of endospore formers in complex ecosystems such as the human gastrointestinal tract.
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Affiliation(s)
- Eugenio Ingribelli
- Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences Prague, Prague, Czechia
| | - Nikol Modrackova
- Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences Prague, Prague, Czechia
| | - Vaclav Tejnecky
- Department of Soil Science and Soil Protection, Czech University of Life Sciences Prague, Prague, Czechia
| | - Jiri Killer
- Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences Prague, Prague, Czechia
- Institute of Animal Physiology and Genetics v.v.i, the Czech Academy of Sciences, Prague, Czechia
| | - Clarissa Schwab
- Biological and Chemical Engineering, Aarhus University, Aarhus C, Denmark
| | - Vera Neuzil-Bunesova
- Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences Prague, Prague, Czechia.
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Corona Ramírez A, Lee KS, Odriozola A, Kaminek M, Stocker R, Zuber B, Junier P. Multiple roads lead to Rome: unique morphology and chemistry of endospores, exospores, myxospores, cysts and akinetes in bacteria. MICROBIOLOGY (READING, ENGLAND) 2023; 169. [PMID: 36804869 DOI: 10.1099/mic.0.001299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
The production of specialized resting cells is a remarkable survival strategy developed by many organisms to withstand unfavourable environmental factors such as nutrient depletion or other changes in abiotic and/or biotic conditions. Five bacterial taxa are recognized to form specialized resting cells: Firmicutes, forming endospores; Actinobacteria, forming exospores; Cyanobacteria, forming akinetes; the δ-Proteobacterial order Myxococcales, forming myxospores; and Azotobacteraceae, forming cysts. All these specialized resting cells are characterized by low-to-absent metabolic activity and higher resistance to environmental stress (desiccation, heat, starvation, etc.) when compared to vegetative cells. Given their similarity in function, we tested the potential existence of a universal morpho-chemical marker for identifying these specialized resting cells. After the production of endospores, exospores, akinetes and cysts in model organisms, we performed the first cross-species morphological and chemical comparison of bacterial sporulation. Cryo-electron microscopy of vitreous sections (CEMOVIS) was used to describe near-native morphology of the resting cells in comparison to the morphology of their respective vegetative cells. Resting cells shared a thicker cell envelope as their only common morphological feature. The chemical composition of the different specialized resting cells at the single-cell level was investigated using confocal Raman microspectroscopy. Our results show that the different specialized cells do not share a common chemical signature, but rather each group has a unique signature with a variable conservation of the signature of the vegetative cells. Additionally, we present the validation of Raman signatures associated with calcium dipicolinic acid (CaDPA) and their variation across individual cells to develop specific sorting thresholds for the isolation of endospores. This provides a proof of concept of the feasibility of isolating bacterial spores using a Raman-activated cell-sorting platform. This cross-species comparison and the current knowledge of genetic pathways inducing the formation of the resting cells highlights the complexity of this convergent evolutionary strategy promoting bacterial survival.
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Affiliation(s)
- Andrea Corona Ramírez
- Laboratory of Microbiology, Institute of Biology, University of Neuchatel, Neuchatel, Switzerland
| | - Kang Soo Lee
- Department of Civil, Institute for Environmental Engineering, Environmental and Geomatic Engineering, ETH Zurich, Zurich, Switzerland
| | | | - Marek Kaminek
- Institute of Anatomy, University of Bern, Bern, Switzerland
| | - Roman Stocker
- Department of Civil, Institute for Environmental Engineering, Environmental and Geomatic Engineering, ETH Zurich, Zurich, Switzerland
| | - Benoît Zuber
- Institute of Anatomy, University of Bern, Bern, Switzerland
| | - Pilar Junier
- Laboratory of Microbiology, Institute of Biology, University of Neuchatel, Neuchatel, Switzerland
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Browne HP, Shao Y, Lawley TD. Mother-infant transmission of human microbiota. Curr Opin Microbiol 2022; 69:102173. [PMID: 35785616 DOI: 10.1016/j.mib.2022.102173] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/24/2022] [Accepted: 05/30/2022] [Indexed: 12/16/2022]
Abstract
Humans are colonised by a highly adapted microbiota with coevolved functions that promote human health, development and disease resistance. Acquisition and assembly of the microbiota start at birth and recent evidence suggests that it coincides with, and informs, immune system development and regulation in the rapidly growing infant. Several large-scale studies have identified Bifidobacterium and Bacteroides species maternally transmitted to infants, many of which are capable of colonising over the longer term. Disruption of maternal transmission by caesarean section and antibiotic exposure around birth is associated with a higher incidence of pathogen colonisation and immune-related disorders in children. In this review, we discuss key maternally transmitted bacterial species, their sources and their potential role in shaping immune development. Maternal transmission of gut bacteria provides a microbial 'starter kit' for infants which promotes healthy growth and disease resistance. Optimising and nurturing this under-appreciated form of kinship should be considered as a priority.
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Affiliation(s)
- Hilary P Browne
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton CB10 1SA, UK.
| | - Yan Shao
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton CB10 1SA, UK
| | - Trevor D Lawley
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton CB10 1SA, UK.
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7
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Karasova D, Faldynova M, Matiasovicova J, Sebkova A, Crhanova M, Kubasova T, Seidlerova Z, Prikrylova H, Volf J, Zeman M, Babak V, Juricova H, Rajova J, Vlasatikova L, Rysavka P, Rychlik I. Host Species Adaptation of Obligate Gut Anaerobes Is Dependent on Their Environmental Survival. Microorganisms 2022; 10:microorganisms10061085. [PMID: 35744604 PMCID: PMC9229247 DOI: 10.3390/microorganisms10061085] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/19/2022] [Accepted: 05/23/2022] [Indexed: 01/27/2023] Open
Abstract
The gut microbiota of warm-blooded vertebrates consists of bacterial species belonging to two main phyla; Firmicutes and Bacteroidetes. However, does it mean that the same bacterial species are found in humans and chickens? Here we show that the ability to survive in an aerobic environment is central for host species adaptation. Known bacterial species commonly found in humans, pigs, chickens and Antarctic gentoo penguins are those capable of extended survival under aerobic conditions, i.e., either spore-forming, aerotolerant or facultatively anaerobic bacteria. Such bacteria are ubiquitously distributed in the environment, which acts as the source of infection with similar probability in humans, pigs, chickens, penguins and likely any other warm-blooded omnivorous hosts. On the other hand, gut anaerobes with no specific adaptation for survival in an aerobic environment exhibit host adaptation. This is associated with their vertical transmission from mothers to offspring and long-term colonisation after administration of a single dose. This knowledge influences the design of next-generation probiotics. The origin of aerotolerant or spore-forming probiotic strains may not be that important. On the other hand, if Bacteroidetes and other host-adapted species are used as future probiotics, host preference should be considered.
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Affiliation(s)
- Daniela Karasova
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Marcela Faldynova
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Jitka Matiasovicova
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Alena Sebkova
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Magdalena Crhanova
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Tereza Kubasova
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Zuzana Seidlerova
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Hana Prikrylova
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Jiri Volf
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Michal Zeman
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic
| | - Vladimir Babak
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Helena Juricova
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Jana Rajova
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Lenka Vlasatikova
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
| | - Petr Rysavka
- Medi Pharma Vision Ltd., 612 00 Brno, Czech Republic;
| | - Ivan Rychlik
- Veterinary Research Institute, 621 00 Brno, Czech Republic; (D.K.); (M.F.); (J.M.); (A.S.); (M.C.); (T.K.); (Z.S.); (H.P.); (J.V.); (M.Z.); (V.B.); (H.J.); (J.R.); (L.V.)
- Correspondence: ; Tel.: +420-533-331-201
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Mechanisms and Applications of Bacterial Sporulation and Germination in the Intestine. Int J Mol Sci 2022; 23:ijms23063405. [PMID: 35328823 PMCID: PMC8953710 DOI: 10.3390/ijms23063405] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/15/2022] [Accepted: 03/18/2022] [Indexed: 02/04/2023] Open
Abstract
Recent studies have suggested a major role for endospore forming bacteria within the gut microbiota, not only as pathogens but also as commensal and beneficial members contributing to gut homeostasis. In this review the sporulation processes, spore properties, and germination processes will be explained within the scope of the human gut. Within the gut, spore-forming bacteria are known to interact with the host’s immune system, both in vegetative cell and spore form. Together with the resistant nature of the spore, these characteristics offer potential for spores’ use as delivery vehicles for therapeutics. In the last part of the review, the therapeutic potential of spores as probiotics, vaccine vehicles, and drug delivery systems will be discussed.
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9
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Browne HP, Almeida A, Kumar N, Vervier K, Adoum AT, Viciani E, Dawson NJR, Forster SC, Cormie C, Goulding D, Lawley TD. Host adaptation in gut Firmicutes is associated with sporulation loss and altered transmission cycle. Genome Biol 2021; 22:204. [PMID: 34348764 PMCID: PMC8340488 DOI: 10.1186/s13059-021-02428-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 07/01/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Human-to-human transmission of symbiotic, anaerobic bacteria is a fundamental evolutionary adaptation essential for membership of the human gut microbiota. However, despite its importance, the genomic and biological adaptations underpinning symbiont transmission remain poorly understood. The Firmicutes are a dominant phylum within the intestinal microbiota that are capable of producing resistant endospores that maintain viability within the environment and germinate within the intestine to facilitate transmission. However, the impact of host transmission on the evolutionary and adaptive processes within the intestinal microbiota remains unknown. RESULTS We analyze 1358 genomes of Firmicutes bacteria derived from host and environment-associated habitats. Characterization of genomes as spore-forming based on the presence of sporulation-predictive genes reveals multiple losses of sporulation in many distinct lineages. Loss of sporulation in gut Firmicutes is associated with features of host-adaptation such as genome reduction and specialized metabolic capabilities. Consistent with these data, analysis of 9966 gut metagenomes from adults around the world demonstrates that bacteria now incapable of sporulation are more abundant within individuals but less prevalent in the human population compared to spore-forming bacteria. CONCLUSIONS Our results suggest host adaptation in gut Firmicutes is an evolutionary trade-off between transmission range and colonization abundance. We reveal host transmission as an underappreciated process that shapes the evolution, assembly, and functions of gut Firmicutes.
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Affiliation(s)
- Hilary P Browne
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Hinxton, UK.
| | - Alexandre Almeida
- Wellcome Sanger Institute, Hinxton, UK
- European Bioinformatics Institute, Hinxton, UK
| | - Nitin Kumar
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Hinxton, UK
| | - Kevin Vervier
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Hinxton, UK
| | | | - Elisa Viciani
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Hinxton, UK
| | - Nicholas J R Dawson
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Hinxton, UK
| | - Samuel C Forster
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Hinxton, UK
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, 3168, Australia
- Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, 3800, Australia
| | | | | | - Trevor D Lawley
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Hinxton, UK.
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Kubasova T, Seidlerova Z, Rychlik I. Ecological Adaptations of Gut Microbiota Members and Their Consequences for Use as a New Generation of Probiotics. Int J Mol Sci 2021; 22:5471. [PMID: 34067354 PMCID: PMC8196900 DOI: 10.3390/ijms22115471] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 05/19/2021] [Accepted: 05/19/2021] [Indexed: 12/16/2022] Open
Abstract
In this review, we link ecological adaptations of different gut microbiota members with their potential for use as a new generation of probiotics. Gut microbiota members differ in their adaptations to survival in aerobic environments. Interestingly, there is an inverse relationship between aerobic survival and abundance or potential for prolonged colonization of the intestinal tract. Facultative anaerobes, aerotolerant Lactobacilli and endospore-forming Firmicutes exhibit high fluctuation, and if such bacteria are to be used as probiotics, they must be continuously administered to mimic their permanent supply from the environment. On the other hand, species not expressing any form of aerobic resistance, such as those from phylum Bacteroidetes, commonly represent host-adapted microbiota members characterized by vertical transmission from mothers to offspring, capable of long-term colonization following a single dose administration. To achieve maximal probiotic efficacy, the mode of their administration should thus reflect their natural ecology.
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Affiliation(s)
| | | | - Ivan Rychlik
- Veterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic; (T.K.); (Z.S.)
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Egan M, Dempsey E, Ryan CA, Ross RP, Stanton C. The Sporobiota of the Human Gut. Gut Microbes 2021; 13:1-17. [PMID: 33406976 PMCID: PMC7801112 DOI: 10.1080/19490976.2020.1863134] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/01/2020] [Accepted: 12/04/2020] [Indexed: 02/04/2023] Open
Abstract
The human gut microbiome is a diverse and complex ecosystem that plays a critical role in health and disease. The composition of the gut microbiome has been well studied across all stages of life. In recent years, studies have investigated the production of endospores by specific members of the gut microbiome. An endospore is a tough, dormant structure formed by members of the Firmicutes phylum, which allows for greater resistance to otherwise inhospitable conditions. This innate resistance has consequences for human health and disease, as well as in biotechnology. In particular, the formation of endospores is strongly linked to antibiotic resistance and the spread of antibiotic resistance genes, also known as the resistome. The term sporobiota has been used to define the spore-forming cohort of a microbial community. In this review, we present an overview of the current knowledge of the sporobiota in the human gut. We discuss the development of the sporobiota in the infant gut and the perinatal factors that may have an effect on vertical transmission from mother to infant. Finally, we examine the sporobiota of critically important food sources for the developing infant, breast milk and powdered infant formula.
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Affiliation(s)
- Muireann Egan
- Food Biosciences Department, Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Eugene Dempsey
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- Department of Neonatology, Cork University Maternity Hospital, Cork, Ireland
| | - C. Anthony Ryan
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- Department of Neonatology, Cork University Maternity Hospital, Cork, Ireland
| | - R. Paul Ross
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Catherine Stanton
- Food Biosciences Department, Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
- APC Microbiome Ireland, University College Cork, Cork, Ireland
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Dvergedal H, Sandve SR, Angell IL, Klemetsdal G, Rudi K. Association of gut microbiota with metabolism in juvenile Atlantic salmon. MICROBIOME 2020; 8:160. [PMID: 33198805 PMCID: PMC7670802 DOI: 10.1186/s40168-020-00938-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 10/13/2020] [Indexed: 05/27/2023]
Abstract
The gut microbiome plays a key role in animal health and metabolism through the intricate functional interconnection between the feed, gut microbes, and the host. Unfortunately, in aquaculture, the links between gut microbes and fish genetics and production phenotypes are not well understood.In this study, we investigate the associations between gut microbial communities, fish feed conversion, and fish genetics in the domestic Atlantic salmon. Microbial community composition was determined for 230 juvenile fish from 23 full-sib families and was then regressed on growth, carbon and nitrogen metabolism, and feed efficiency. We only found weak associations between host genetics and microbial composition. However, we did identify significant (p < 0.05) associations between the abundance of three microbial operational taxonomical units (OTUs) and fish metabolism phenotypes. Two OTUs were associated with both carbon metabolism in adipose tissue and feed efficiency, while a third OTU was associated with weight gain.In conclusion, this study demonstrates an intriguing association between host lipid metabolism and the gut microbiota composition in Atlantic salmon. Video Abstract.
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Affiliation(s)
- H Dvergedal
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P. O. Box 5003, NO-1433, Ås, Norway
| | - S R Sandve
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P. O. Box 5003, NO-1433, Ås, Norway.
| | - I L Angell
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P. O. Box 5003, NO-1433, Ås, Norway
| | - G Klemetsdal
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P. O. Box 5003, NO-1433, Ås, Norway
| | - K Rudi
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P. O. Box 5003, NO-1433, Ås, Norway
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Appert O, Garcia AR, Frei R, Roduit C, Constancias F, Neuzil-Bunesova V, Ferstl R, Zhang J, Akdis C, Lauener R, Lacroix C, Schwab C. Initial butyrate producers during infant gut microbiota development are endospore formers. Environ Microbiol 2020; 22:3909-3921. [PMID: 32686173 DOI: 10.1111/1462-2920.15167] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/09/2020] [Accepted: 07/15/2020] [Indexed: 12/12/2022]
Abstract
The acquisition of the infant gut microbiota is key to establishing a host-microbiota symbiosis. Microbially produced metabolites tightly interact with the immune system, and the fermentation-derived short-chain fatty acid butyrate is considered an important mediator linked to chronic diseases later in life. The intestinal butyrate-forming bacterial population is taxonomically and functionally diverse and includes endospore formers with high transmission potential. Succession, and contribution of butyrate-producing taxa during infant gut microbiota development have been little investigated. We determined the abundance of major butyrate-forming groups and fermentation metabolites in faeces, isolated, cultivated and characterized the heat-resistant cell population, which included endospores, and compared butyrate formation efficiency of representative taxa in batch cultures. The endospore community contributed about 0.001% to total cells, and was mainly composed of the pioneer butyrate-producing Clostridium sensu stricto. We observed an increase in abundance of Faecalibacterium prausnitzii, butyrate-producing Lachnospiraceae and faecal butyrate levels with age that is likely explained by higher butyrate production capacity of contributing taxa compared with Clostridium sensu stricto. Our data suggest that a successional arrangement and an overall increase in abundance of butyrate forming populations occur during the first year of life, which is associated with an increase of intestinal butyrate formation capacity.
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Affiliation(s)
- Olivia Appert
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zürich, Zürich, Switzerland
| | - Alejandro Ramirez Garcia
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zürich, Zürich, Switzerland
| | - Remo Frei
- Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland.,Division of Respiratory Medicine, Department of Paediatrics, Inselspital, University of Bern, Bern, Switzerland
| | - Caroline Roduit
- Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland.,University Children's Hospital Zürich, Zürich, Switzerland.,Children's Hospital St. Gallen, St. Gallen, Switzerland
| | - Florentin Constancias
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zürich, Zürich, Switzerland
| | - Vera Neuzil-Bunesova
- Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences, Prague, Czech Republic
| | - Ruth Ferstl
- Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland.,Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland
| | - Jianbo Zhang
- Laboratory of Toxicology, Institute of Food, Nutrition and Health, ETH Zürich, Zürich, Switzerland
| | - Cezmi Akdis
- Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland.,Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland
| | - Roger Lauener
- Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland.,Children's Hospital St. Gallen, St. Gallen, Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zürich, Zürich, Switzerland
| | - Clarissa Schwab
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zürich, Zürich, Switzerland.,Division of Biological and Chemical Engineering, Aarhus University, Aarhus, Denmark
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