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Ziemons J, Aarnoutse R, Heuft A, Hillege L, Waelen J, de Vos-Geelen J, Valkenburg-van Iersel L, van Hellemond IEG, Creemers GJM, Baars A, Vestjens JHMJ, Penders J, Venema K, Smidt ML. Fecal levels of SCFA and BCFA during capecitabine in patients with metastatic or unresectable colorectal cancer. Clin Exp Med 2023; 23:3919-3933. [PMID: 37027066 PMCID: PMC10618330 DOI: 10.1007/s10238-023-01048-7] [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: 02/17/2023] [Accepted: 03/17/2023] [Indexed: 04/08/2023]
Abstract
BACKGROUND Gut bacteria-derived short-chain fatty acids (SCFA) and branched-chain fatty acids (BCFA) are considered to have beneficial metabolic, anti-inflammatory as well as anti-carcinogenic effects. Previous preclinical studies indicated bidirectional interactions between gut bacteria and the chemotherapeutic capecitabine or its metabolite 5-FU. This study investigated the effect of three cycles of capecitabine on fecal SCFA and BCFA levels and their associations with tumor response, nutritional status, physical performance, chemotherapy-induced toxicity, systemic inflammation and bacterial abundances in patients with colorectal cancer (CRC). METHODS Forty-four patients with metastatic or unresectable CRC, scheduled for treatment with capecitabine (± bevacizumab), were prospectively enrolled. Patients collected a fecal sample and completed a questionnaire before (T1), during (T2) and after (T3) three cycles of capecitabine. Tumor response (CT/MRI scans), nutritional status (MUST score), physical performance (Karnofsky Performance Score) and chemotherapy-induced toxicity (CTCAE) were recorded. Additional data on clinical characteristics, treatment regimen, medical history and blood inflammatory parameters were collected. Fecal SCFA and BCFA concentrations were determined by gas chromatography-mass spectrometry (GC-MS). Gut microbiota composition was assessed using 16S rRNA amplicon sequencing. RESULTS Fecal levels of the SCFA valerate and caproate decreased significantly during three cycles of capecitabine. Furthermore, baseline levels of the BCFA iso-butyrate were associated with tumor response. Nutritional status, physical performance and chemotherapy-induced toxicity were not significantly associated with SCFA or BCFA. Baseline SCFA correlated positively with blood neutrophil counts. At all time points, we identified associations between SCFA and BCFA and the relative abundance of bacterial taxa on family level. CONCLUSIONS The present study provided first indications for a potential role of SCFA and BCFA during capecitabine treatment as well as implications for further research. TRIAL REGISTRATION The current study was registered in the Dutch Trial Register (NTR6957) on 17/01/2018 and can be consulted via the International Clinical Trial Registry Platform (ICTRP).
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Affiliation(s)
- Janine Ziemons
- GROW - School for Oncology and Reproduction, Maastricht University, Maastricht, The Netherlands.
- Department of Surgery, Maastricht University Medical Centre, Maastricht, The Netherlands.
| | - Romy Aarnoutse
- GROW - School for Oncology and Reproduction, Maastricht University, Maastricht, The Netherlands
- Department of Surgery, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Anne Heuft
- Department of Internal Medicine, Division of Medical Oncology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Lars Hillege
- GROW - School for Oncology and Reproduction, Maastricht University, Maastricht, The Netherlands
- Department of Surgery, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Janneke Waelen
- GROW - School for Oncology and Reproduction, Maastricht University, Maastricht, The Netherlands
- Department of Surgery, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Judith de Vos-Geelen
- GROW - School for Oncology and Reproduction, Maastricht University, Maastricht, The Netherlands
- Department of Internal Medicine, Division of Medical Oncology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Liselot Valkenburg-van Iersel
- GROW - School for Oncology and Reproduction, Maastricht University, Maastricht, The Netherlands
- Department of Internal Medicine, Division of Medical Oncology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | | | | | - Arnold Baars
- Department of Medical Oncology, Hospital Gelderse Vallei, Ede, The Netherlands
| | | | - John Penders
- NUTRIM - School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
- Department of Medical Microbiology, Infectious Diseases and Infection Prevention, Maastricht University Medical Centre, Maastricht, The Netherlands
- Euregional Microbiome Center, Maastricht, The Netherlands
| | - Koen Venema
- Euregional Microbiome Center, Maastricht, The Netherlands
- Centre for Healthy Eating and Food Innovation, Maastricht University - Campus Venlo, Venlo, The Netherlands
| | - Marjolein L Smidt
- GROW - School for Oncology and Reproduction, Maastricht University, Maastricht, The Netherlands
- Department of Surgery, Maastricht University Medical Centre, Maastricht, The Netherlands
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2
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Gao H, He C, Hua R, Liang C, Wang B, Du Y, Xin S, Guo Y, Gao L, Zhang L, Shang H, Xu J. Underlying beneficial effects of Rhubarb on constipation-induced inflammation, disorder of gut microbiome and metabolism. Front Pharmacol 2022; 13:1048134. [PMID: 36545319 PMCID: PMC9760883 DOI: 10.3389/fphar.2022.1048134] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 11/24/2022] [Indexed: 12/12/2022] Open
Abstract
Background: Constipation is a common syndrome and a worldwide healthy problem. Constipation patients are becoming younger, with a 29.6% overall prevalence in children, which has captured significant attention because of its epigenetic rejuvenation and recurrent episodes. Despite the usage of rhubarb extract to relieve constipation, novel targets and genes implicated in target-relevant pathways with remarkable functionalities should still be sought for. Materials and methods: We established a reliable constipation model in C57B/6N male mice using intragastric administration diphenoxylate, and the eligible subjects received 600 mg/25 g rhubarb extract to alleviate constipation. Resultant constipation was morphological and genetically compared with the specimen from different groups. Results: Constipation mice exhibited thicker muscle layers, higher levels of cytokines, including IL-17 and IL-23, and lower content of IL-22. Bacterial abundance and diversity varied tremendously. Notably, the alterations were reversed following rhubarb extract treatment. Additionally, Constipation also had a substantial impact on short-chain fatty acids (SCFAs), medium- and long-chain fatty acids (MLCFAs), and the expression of SCFA receptors, GPR41 and GPR43. Conclusion: This thesis has provided insight that rhubarb extract promoted the flexibility of collagen fiber, reduced pro-inflammatory cytokines, enhanced anti-inflammatory cytokines, and maintained gut microflora balance with potential impacts on the fatty acid and polyamine metabolism.
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Affiliation(s)
- Han Gao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Chengwei He
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Rongxuan Hua
- Department of Clinical Medicine, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Chen Liang
- Department of Clinical Medicine, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Boya Wang
- Undergraduate Student of 2018 Eight Program of Clinical Medicine, Peking University Peoples Hospital, Beijing, China
| | - Yixuan Du
- Department of Oral Medicine, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Shuzi Xin
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Yuexin Guo
- Department of Oral Medicine, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Lei Gao
- Department of Biomedical Informatics, School of Biomedical Engineering, Capital Medical University, Beijing, China
| | - Lucia Zhang
- Class of 2025, Loomis Chaffee School, Windsor, CT, United States
| | - Hongwei Shang
- Experimental Center for Morphological Research Platform, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Jingdong Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China,*Correspondence: Jingdong Xu,
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3
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Tingö L, Hutchinson AN, Bergh C, Stiefvatter L, Schweinlin A, Jensen MG, Krüger K, Bischoff SC, Brummer RJ. Potential Modulation of Inflammation by Probiotic and Omega-3 Supplementation in Elderly with Chronic Low-Grade Inflammation—A Randomized, Placebo-Controlled Trial. Nutrients 2022; 14:nu14193998. [PMID: 36235651 PMCID: PMC9573426 DOI: 10.3390/nu14193998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 09/15/2022] [Accepted: 09/18/2022] [Indexed: 11/18/2022] Open
Abstract
Probiotic and omega-3 supplements have been shown to reduce inflammation, and dual supplementation may have synergistic health effects. We investigated if the novel combination of a multi-strain probiotic (containing B. lactis Bi-07, L. paracasei Lpc-37, L. acidophilus NCFM, and B. lactis Bl-04) alongside omega-3 supplements reduces low-grade inflammation as measured by high-sensitivity C-reactive protein (hs-CRP) in elderly participants in a proof-of-concept, randomized, placebo-controlled, parallel study (NCT04126330). In this case, 76 community-dwelling elderly participants (median: 71.0 years; IQR: 68.0–73.8) underwent an intervention with the dual supplement (n = 37) or placebo (n = 39) for eight weeks. In addition to hs-CRP, cytokine levels and intestinal permeability were also assessed at baseline and after the eight-week intervention. No significant difference was seen for hs-CRP between the dual supplement group and placebo. However, interestingly, supplementation did result in significant increases in the level of the anti-inflammatory marker IL-10. In addition, dual supplementation increased levels of valeric acid, further suggesting the potential of the supplements in reducing inflammation and conferring health benefits. Together, the results suggest that probiotic and omega-3 dual supplementation exerts modest effects on inflammation and may have potential use as a non-pharmacological treatment for low-grade inflammation in the elderly.
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Affiliation(s)
- Lina Tingö
- Nutrition-Gut-Brain Interactions Research Centre, School of Medical Sciences, Örebro University, 70362 Örebro, Sweden
- Food and Health Programme, Örebro University, 70362 Örebro, Sweden
- Division of Inflammation and Infection, Department of Biomedical and Clinical Sciences, Linköping University, 58183 Linköping, Sweden
| | - Ashley N. Hutchinson
- Nutrition-Gut-Brain Interactions Research Centre, School of Medical Sciences, Örebro University, 70362 Örebro, Sweden
- Correspondence: ; Tel.: +46-737-455-302
| | - Cecilia Bergh
- Clinical Epidemiology and Biostatistics, School of Medical Sciences, Örebro University, 70362 Örebro, Sweden
| | - Lena Stiefvatter
- Department of Nutritional Medicine and Prevention, University of Hohenheim, 70599 Stuttgart, Germany
| | - Anna Schweinlin
- Department of Nutritional Medicine and Prevention, University of Hohenheim, 70599 Stuttgart, Germany
| | | | - Kirsten Krüger
- Human Nutrition & Health, Department of Agrotechnology and Food Sciences, Wageningen University & Research, 9101 Wageningen, The Netherlands
| | - Stephan C. Bischoff
- Department of Nutritional Medicine and Prevention, University of Hohenheim, 70599 Stuttgart, Germany
| | - Robert J. Brummer
- Nutrition-Gut-Brain Interactions Research Centre, School of Medical Sciences, Örebro University, 70362 Örebro, Sweden
- Food and Health Programme, Örebro University, 70362 Örebro, Sweden
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Rodríguez-Sorrento A, Castillejos L, López-Colom P, Cifuentes-Orjuela G, Moreno-Muñoz JA, Martín-Orúe SM. Assessment of the Effects of the Synbiotic Combination of Bifidobacterium longum subsp. infantis CECT 7210 and Oligofructose-Enriched Inulin Against Digestive Bacterial Infections in a Piglet Model. Front Microbiol 2022; 13:831737. [PMID: 35350617 PMCID: PMC8957890 DOI: 10.3389/fmicb.2022.831737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 02/11/2022] [Indexed: 11/24/2022] Open
Abstract
The use of bifidobacteria as probiotics has proven to be beneficial in gastroenteric infections. Furthermore, prebiotics such as inulin can enhance the survival and growth of these bacteria. Two trials were performed to evaluate the effects of the administration of Bifidobacterium longum subsp. infantis CECT 7210 and oligofructose-enriched inulin against Salmonella enterica serovar Typhimurium or enterotoxigenic Escherichia coli (ETEC) F4. A total of 72 (Salmonella trial) and 96 (ETEC F4 trial) weaned piglets were used in a 2 × 2 design (with or without synbiotic, inoculated or not with the pathogen). After adaptation, animals were orally inoculated. Performance and clinical signs were evaluated. On days 4 and 8 (Salmonella trial) and 3 and 7 (ETEC F4 trial) post-inoculation (PI), one animal per pen was euthanized. Blood, digestive content and tissue samples were collected and microbiological counts, fermentation products, serum inflammatory markers and ileum histomorphometry analysis were performed. Both challenges had an impact on faecal consistency (p < 0.001), including the faecal shedding of Salmonella and increased numbers of enterobacteria and coliforms. The synbiotic administration did not have any effect on pathogen loads but induced changes in the fermentation profile, such as increased valeric acid in both trials as well as decreased acetic acid, except for Salmonella-challenged animals. The effect on propionate varied among trials, increasing in challenged synbiotic-treated pigs and decreasing in non-challenged ones in the Salmonella trial (P interaction = 0.013), while the opposed occurred in the ETEC F4 trial (P interaction = 0.013). The administration of the synbiotic increased intraepithelial lymphocytes (IEL; p = 0.039) on day 8 PI in the Salmonella trial and a similar trend occurred in non-challenged pigs in the ETEC F4 trial (P interaction = 0.086). The results did not provide evidence of reduced pathogen load with the synbiotic, although a modulation in fermentative activity could be identified depending on the challenge. Consistent increases were found in IEL, suggesting that this synbiotic combination has some immunomodulatory properties.
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Affiliation(s)
- Agustina Rodríguez-Sorrento
- Servicio de Nutrición y Bienestar Animal, Departament de Ciència Animal i Dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Lorena Castillejos
- Servicio de Nutrición y Bienestar Animal, Departament de Ciència Animal i Dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Paola López-Colom
- Servicio de Nutrición y Bienestar Animal, Departament de Ciència Animal i Dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, Spain.,Departamento de Producción Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Agraria del Ecuador (UAE), Guayaquil, Ecuador
| | | | | | - Susana M Martín-Orúe
- Servicio de Nutrición y Bienestar Animal, Departament de Ciència Animal i Dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, Spain
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5
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Caspani G, Green M, Swann JR, Foster JA. Microbe-Immune Crosstalk: Evidence That T Cells Influence the Development of the Brain Metabolome. Int J Mol Sci 2022; 23:3259. [PMID: 35328680 PMCID: PMC8952415 DOI: 10.3390/ijms23063259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/06/2022] [Accepted: 03/10/2022] [Indexed: 11/21/2022] Open
Abstract
Cross-talk between the immune system and the brain is essential to neuronal development, neuronal excitability, neuroplasticity, and neurotransmission. Gut microbiota are essential to immune system development and immune function; hence, it is essential to consider more broadly the microbiota-immune-brain axis in neurodevelopment. The gut, brain, and microbial metabolomes obtained from C57Bl/6 and T-cell-deficient mice across four developmental timepoints (postnatal day 17, 24, 28, and 84) were studied by 1H NMR spectroscopy. 16S rRNA gene sequencing was performed on cecal and fecal samples. In the absence of T-cells, the developmental trajectory of the gut microbiota and of the host's metabolic profile was altered. The novel insights from this work include (1) the requirement of functional T-cells for the normal trajectory of microbiotal development and the metabolic maturation of the supra-organism, (2) the potential role for Muribaculaceae taxa in modulating the cecal availability of metabolites previously implicated with a role in the gut-brain axis in T-cell deficient mice, and (3) the impact of T-cell-deficiency on central levels of neuroactive metabolites.
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Affiliation(s)
- Giorgia Caspani
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London SW7 2AZ, UK; (G.C.); (J.R.S.)
| | - Miranda Green
- Department of Psychiatry & Behavioral Neurosciences, McMaster University, Hamilton, ON L8S 4L8, Canada;
| | - Jonathan R. Swann
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London SW7 2AZ, UK; (G.C.); (J.R.S.)
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Jane A. Foster
- Department of Psychiatry & Behavioral Neurosciences, McMaster University, Hamilton, ON L8S 4L8, Canada;
- St. Joseph’s Healthcare, Hamilton, ON L8N 4A6, Canada
- Centre for Depression and Suicide Studies, St. Michael’s Hospital, Toronto, ON M5B 1A6, Canada
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6
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Haupka C, Brito LF, Busche T, Wibberg D, Wendisch VF. Genomic and Transcriptomic Investigation of the Physiological Response of the Methylotroph Bacillus methanolicus to 5-Aminovalerate. Front Microbiol 2021; 12:664598. [PMID: 33995329 PMCID: PMC8119775 DOI: 10.3389/fmicb.2021.664598] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 03/22/2021] [Indexed: 11/19/2022] Open
Abstract
The methylotrophic thermophile Bacillus methanolicus can utilize the non-food substrate methanol as its sole carbon and energy source. Metabolism of L-lysine, in particular its biosynthesis, has been studied to some detail, and methanol-based L-lysine production has been achieved. However, little is known about L-lysine degradation, which may proceed via 5-aminovalerate (5AVA), a non-proteinogenic ω-amino acid with applications in bioplastics. The physiological role of 5AVA and related compounds in the native methylotroph was unknown. Here, we showed that B. methanolicus exhibits low tolerance to 5AVA, but not to related short-chain (C4–C6) amino acids, diamines, and dicarboxylic acids. In order to gain insight into the physiological response of B. methanolicus to 5AVA, transcriptomic analyses by differential RNA-Seq in the presence and absence of 5AVA were performed. Besides genes of the general stress response, RNA levels of genes of histidine biosynthesis, and iron acquisition were increased in the presence of 5AVA, while an Rrf2 family transcriptional regulator gene showed reduced RNA levels. In order to test if mutations can overcome growth inhibition by 5AVA, adaptive laboratory evolution (ALE) was performed and two mutants—AVA6 and AVA10—with higher tolerance to 5AVA were selected. Genome sequencing revealed mutations in genes related to iron homeostasis, including the gene for an iron siderophore-binding protein. Overexpression of this mutant gene in the wild-type (WT) strain MGA3 improved 5AVA tolerance significantly at high Fe2+ supplementation. The combined ALE, omics, and genetics approach helped elucidate the physiological response of thermophilic B. methanolicus to 5AVA and will guide future strain development for 5AVA production from methanol.
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Affiliation(s)
- Carsten Haupka
- Genetics of Prokaryotes, Faculty of Biology, CeBiTec, Bielefeld University, Bielefeld, Germany
| | - Luciana F Brito
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Tobias Busche
- Technology Platform Genomics, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Daniel Wibberg
- Genome Research of Industrial Microorganisms, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Volker F Wendisch
- Genetics of Prokaryotes, Faculty of Biology, CeBiTec, Bielefeld University, Bielefeld, Germany
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7
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Bevilacqua R, Regueira A, Mauricio-Iglesias M, Lema JM, Carballa M. Steering the conversion of protein residues to volatile fatty acids by adjusting pH. BIORESOURCE TECHNOLOGY 2021; 320:124315. [PMID: 33189039 DOI: 10.1016/j.biortech.2020.124315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/21/2020] [Accepted: 10/22/2020] [Indexed: 06/11/2023]
Abstract
This study investigates the influence of pH on protein conversion into volatile fatty acids by anaerobic mixed-culture fermentation, a topic that, in contrast to glucose fermentation, only had scarce and contradictory information available. Several experiments were performed with two model proteins (casein and gelatin) at three different pH values (5, 7 and 9) using chemostats and batch tests. Highest conversion was reached at neutral pH although complete acidification was never achieved. Longer chain carboxylates production was favoured at low pH, while acetic acid was the main product at pH 7 and 9. Amino acids preferential consumption also varied with pH and protein composition. In fact, protein conversion stoichiometry is mainly driven by energetic yields and amino acid molecular configuration. Overall, this study identifies pH adjustment as a way to steer volatile fatty acid production during mixed-culture fermentation of proteins.
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Affiliation(s)
- R Bevilacqua
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - A Regueira
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - M Mauricio-Iglesias
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - J M Lema
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - M Carballa
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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8
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Beaumont M, Cauquil L, Bertide A, Ahn I, Barilly C, Gil L, Canlet C, Zemb O, Pascal G, Samson A, Combes S. Gut Microbiota-Derived Metabolite Signature in Suckling and Weaned Piglets. J Proteome Res 2020; 20:982-994. [PMID: 33289566 DOI: 10.1021/acs.jproteome.0c00745] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The gut microbiota plays a key role in intestinal development at the suckling-to-weaning transition. The objective of this study was to analyze the production of metabolites by the gut microbiota in suckling and weaned piglets. We studied piglets raised in two separate maternity farms and weaned at postnatal day 21 in the same farm. The fecal metabolome (1H nuclear magnetic resonance) and the microbiota composition (16S rRNA gene amplicon sequencing) and its predicted functions (PICRUSt2) were analyzed in the same piglets during the suckling period (postnatal day 13) and 2 days after weaning (postnatal day 23). The relative concentrations of the bacterial metabolites methylamine, dimethylamine, cadaverine, tyramine, putrescine, 5-aminovalerate, succinate, and 3-(4-hydroxyphenylpropionate) were higher during the suckling period than after weaning. In contrast, the relative concentrations of the short-chain fatty acids acetate and propionate were higher after weaning than during the suckling period. The maternity of origin of piglets also influenced the level of some bacterial metabolites (propionate and isobutyrate). The fecal metabolome signatures observed in suckling and weaned piglets were associated with specific microbiota-predicted functionalities, structure, and diversity. Gut microbiota-derived metabolites, which are differentially abundant between suckling and weaned piglets (e.g., short-chain fatty acids and biogenic amines), are known to regulate gut health. Thus, identification of metabolome signatures in suckling and weaned piglets paves the way for the development of health-promoting nutritional strategies, targeting the production of bacterial metabolites in early life.
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Affiliation(s)
- Martin Beaumont
- GenPhySE, Université de Toulouse, INRAE, ENVT, F-31326 Castanet-Tolosan, France
| | - Laurent Cauquil
- GenPhySE, Université de Toulouse, INRAE, ENVT, F-31326 Castanet-Tolosan, France
| | - Allan Bertide
- GenPhySE, Université de Toulouse, INRAE, ENVT, F-31326 Castanet-Tolosan, France.,Neovia-ADM, Rue de l'Eglise, 02402 Château-Thierry Cedex, France
| | - Ingrid Ahn
- GenPhySE, Université de Toulouse, INRAE, ENVT, F-31326 Castanet-Tolosan, France
| | - Céline Barilly
- GenPhySE, Université de Toulouse, INRAE, ENVT, F-31326 Castanet-Tolosan, France
| | - Lisa Gil
- GeT-PlaGe, Genotoul, INRAE, F-31326 Castanet-Tolosan, France
| | - Cécile Canlet
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, 31027 Toulouse, France
| | - Olivier Zemb
- GenPhySE, Université de Toulouse, INRAE, ENVT, F-31326 Castanet-Tolosan, France
| | - Géraldine Pascal
- GenPhySE, Université de Toulouse, INRAE, ENVT, F-31326 Castanet-Tolosan, France
| | - Arnaud Samson
- Neovia-ADM, Rue de l'Eglise, 02402 Château-Thierry Cedex, France
| | - Sylvie Combes
- GenPhySE, Université de Toulouse, INRAE, ENVT, F-31326 Castanet-Tolosan, France
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9
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Panzer AR, Lynch SV. Gut Microbial Regulation of Autism Spectrum Disorder Symptoms. Trends Endocrinol Metab 2020; 31:809-811. [PMID: 32972817 DOI: 10.1016/j.tem.2020.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 09/03/2020] [Indexed: 11/27/2022]
Abstract
Relationships between gut microbiome perturbation and autism spectrum disorder (ASD) have been observed in several human studies, but the functional implications and molecular mechanisms by which microbes may influence disease symptomology remain enigmatic. A recently published study by Sharon et al. offers evidence that the gut microbiome has a causative role in ASD and highlights the importance of early-life gut microbial metabolites in shaping mammalian behavior.
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Affiliation(s)
- Ariane R Panzer
- Division of Gastroenterology, University of California San Francisco, San Francisco, CA, USA; UCSF Benioff Center for Microbiome Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Susan V Lynch
- Division of Gastroenterology, University of California San Francisco, San Francisco, CA, USA; UCSF Benioff Center for Microbiome Medicine, University of California San Francisco, San Francisco, CA, USA.
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10
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Bevilacqua R, Regueira A, Mauricio-Iglesias M, Lema JM, Carballa M. Protein composition determines the preferential consumption of amino acids during anaerobic mixed-culture fermentation. WATER RESEARCH 2020; 183:115958. [PMID: 32622229 DOI: 10.1016/j.watres.2020.115958] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/07/2020] [Accepted: 05/17/2020] [Indexed: 06/11/2023]
Abstract
The valorisation of protein-rich residual streams by anaerobic mixed-culture fermentation (MCF) has been barely studied in contrast to carbohydrate-rich wastes. The aim of this work was, therefore, to investigate how protein composition, i.e. the amino acid (AA) profile, affects the individual consumption of amino acids and, consequently, the outcome of the process. Mixed-culture fermentations were performed with two model proteins (casein and gelatin) using continuous and batch reactors at neutral pH values and 25 °C. The acidification was incomplete for both proteins, with casein achieving a higher value than gelatin. Albeit dominated by acetic acid, product spectra were different as well, with n-butyric acid as the second major product for casein and propionic acid for gelatin. The preferential consumption of amino acids was demonstrated, which interestingly depends on protein composition. The previously accepted stoichiometry accurately describes iso and n-butyric acid production, but it fails for propionic, iso and n-valeric acid generation. Overall, this study offers a better understanding of protein fermentation mechanisms, which will help to improve degradation models and to design fermentation processes, based on optimal substrate selection.
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Affiliation(s)
- Riccardo Bevilacqua
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Alberte Regueira
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Miguel Mauricio-Iglesias
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
| | - Juan M Lema
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Marta Carballa
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
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11
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Metabolic modeling for predicting VFA production from protein‐rich substrates by mixed‐culture fermentation. Biotechnol Bioeng 2019; 117:73-84. [DOI: 10.1002/bit.27177] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 08/27/2019] [Accepted: 09/17/2019] [Indexed: 11/07/2022]
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12
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McDonald JAK, Mullish BH, Pechlivanis A, Liu Z, Brignardello J, Kao D, Holmes E, Li JV, Clarke TB, Thursz MR, Marchesi JR. Inhibiting Growth of Clostridioides difficile by Restoring Valerate, Produced by the Intestinal Microbiota. Gastroenterology 2018; 155:1495-1507.e15. [PMID: 30025704 PMCID: PMC6347096 DOI: 10.1053/j.gastro.2018.07.014] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 06/21/2018] [Accepted: 07/09/2018] [Indexed: 12/24/2022]
Abstract
BACKGROUND & AIMS Fecal microbiota transplantation (FMT) is effective for treating recurrent Clostridioides difficile infection (CDI), but there are concerns about its long-term safety. Understanding the mechanisms of the effects of FMT could help us design safer, targeted therapies. We aimed to identify microbial metabolites that are important for C difficile growth. METHODS We used a CDI chemostat model as a tool to study the effects of FMT in vitro. The following analyses were performed: C difficile plate counts, 16S rRNA gene sequencing, proton nuclear magnetic resonance spectroscopy, and ultra-performance liquid chromatography and mass spectrometry bile acid profiling. FMT mixtures were prepared using fresh fecal samples provided by donors enrolled in an FMT program in the United Kingdom. Results from chemostat experiments were validated using human stool samples, C difficile batch cultures, and C57BL/6 mice with CDI. Human stool samples were collected from 16 patients with recurrent CDI and healthy donors (n = 5) participating in an FMT trial in Canada. RESULTS In the CDI chemostat model, clindamycin decreased valerate and deoxycholic acid concentrations and increased C difficile total viable counts and valerate precursors, taurocholic acid, and succinate concentrations. After we stopped adding clindamycin, levels of bile acids and succinate recovered, whereas levels of valerate and valerate precursors did not. In the CDI chemostat model, FMT increased valerate concentrations and decreased C difficile total viable counts (94% decrease), spore counts (86% decrease), and valerate precursor concentrations; concentrations of bile acids were unchanged. In stool samples from patients with CDI, valerate was depleted before FMT but restored after FMT. Clostridioides difficile batch cultures confirmed that valerate decreased vegetative growth, and that taurocholic acid was required for germination but had no effect on vegetative growth. Clostridioides difficile total viable counts were decreased by 95% in mice with CDI given glycerol trivalerate compared with phosphate buffered saline. CONCLUSIONS We identified valerate as a metabolite that is depleted with clindamycin and only recovered with FMT. Valerate is a target for a rationally designed recurrent CDI therapy.
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Affiliation(s)
- Julie A K McDonald
- Division of Integrative Systems Medicine and Digestive Disease, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Benjamin H Mullish
- Division of Integrative Systems Medicine and Digestive Disease, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Alexandros Pechlivanis
- Division of Integrative Systems Medicine and Digestive Disease, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Zhigang Liu
- Division of Integrative Systems Medicine and Digestive Disease, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Jerusa Brignardello
- Division of Integrative Systems Medicine and Digestive Disease, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Dina Kao
- Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Elaine Holmes
- Division of Integrative Systems Medicine and Digestive Disease, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Jia V Li
- Division of Integrative Systems Medicine and Digestive Disease, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Thomas B Clarke
- MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, United Kingdom
| | - Mark R Thursz
- Division of Integrative Systems Medicine and Digestive Disease, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Julian R Marchesi
- Division of Integrative Systems Medicine and Digestive Disease, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom; School of Biosciences, Cardiff University, Cardiff, United Kingdom.
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13
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Medlock GL, Carey MA, McDuffie DG, Mundy MB, Giallourou N, Swann JR, Kolling GL, Papin JA. Inferring Metabolic Mechanisms of Interaction within a Defined Gut Microbiota. Cell Syst 2018; 7:245-257.e7. [PMID: 30195437 PMCID: PMC6166237 DOI: 10.1016/j.cels.2018.08.003] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 06/15/2018] [Accepted: 08/03/2018] [Indexed: 12/20/2022]
Abstract
The diversity and number of species present within microbial communities create the potential for a multitude of interspecies metabolic interactions. Here, we develop, apply, and experimentally test a framework for inferring metabolic mechanisms associated with interspecies interactions. We perform pairwise growth and metabolome profiling of co-cultures of strains from a model mouse microbiota. We then apply our framework to dissect emergent metabolic behaviors that occur in co-culture. Based on one of the inferences from this framework, we identify and interrogate an amino acid cross-feeding interaction and validate that the proposed interaction leads to a growth benefit in vitro. Our results reveal the type and extent of emergent metabolic behavior in microbial communities composed of gut microbes. We focus on growth-modulating interactions, but the framework can be applied to interspecies interactions that modulate any phenotype of interest within microbial communities.
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Affiliation(s)
- Gregory L Medlock
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Maureen A Carey
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, VA, USA
| | - Dennis G McDuffie
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Michael B Mundy
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA
| | - Natasa Giallourou
- Department of Surgery and Cancer, Division of Integrative Systems Medicine and Digestive Diseases, Faculty of Medicine, Imperial College London, South Kensington, London, UK
| | - Jonathan R Swann
- Department of Surgery and Cancer, Division of Integrative Systems Medicine and Digestive Diseases, Faculty of Medicine, Imperial College London, South Kensington, London, UK
| | - Glynis L Kolling
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Jason A Papin
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA; Department of Medicine, Division of Infectious Diseases & International Health, University of Virginia, Charlottesville, VA, USA; Department of Biochemistry & Molecular Genetics, University of Virginia, Charlottesville, VA, USA.
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14
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Lemaire M, Dou S, Cahu A, Formal M, Le Normand L, Romé V, Nogret I, Ferret-Bernard S, Rhimi M, Cuinet I, Canlet C, Tremblay-Franco M, Le Ruyet P, Baudry C, Gérard P, Le Huërou-Luron I, Blat S. Addition of dairy lipids and probiotic Lactobacillus fermentum in infant formula programs gut microbiota and entero-insular axis in adult minipigs. Sci Rep 2018; 8:11656. [PMID: 30076313 PMCID: PMC6076243 DOI: 10.1038/s41598-018-29971-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 07/23/2018] [Indexed: 02/08/2023] Open
Abstract
Clinical and animal studies have demonstrated beneficial effects of early consumption of dairy lipids and a probiotic, Lactobacillus fermentum (Lf), on infant gut physiology. The objective of this study was to investigate their long-term effects on gut microbiota and host entero-insular axis and metabolism. Piglets were suckled with a milk formula containing only plant lipids (PL), a half-half mixture of plant lipids and dairy lipids (DL), or this mixture supplemented with Lf (DL + Lf). They were weaned on a standard diet and challenged with a high-energy diet until postnatal day 140. DL and DL + Lf modulated gut microbiota composition and metabolism, increasing abundance of several Clostridia genera. Moreover, DL + Lf specifically decreased the faecal content of 2-oxoglutarate and lysine compared to PL and 5-aminovalerate compared to PL and DL. It also increased short-chain fatty acid concentrations like propionate compared to DL. Furthermore, DL + Lf had a beneficial effect on the endocrine function, enhancing caecal GLP-1 and GLP-1 meal-stimulated secretion. Correlations highlighted the consistent relationship between microbiota and gut physiology. Together, our results evidence a beneficial programming effect of DL + Lf in infant formula composition on faecal microbiota and entero-insular axis function.
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Affiliation(s)
- Marion Lemaire
- INRA, INSERM, Univ Rennes, Nutrition Metabolisms and Cancer, NuMeCan, Rennes, France
- Lactalis R&D, Retiers, France
| | - Samir Dou
- PEGASE, INRA, Agrocampus Ouest, Saint-Gilles, France
| | - Armelle Cahu
- INRA, INSERM, Univ Rennes, Nutrition Metabolisms and Cancer, NuMeCan, Rennes, France
| | - Michèle Formal
- INRA, INSERM, Univ Rennes, Nutrition Metabolisms and Cancer, NuMeCan, Rennes, France
| | - Laurence Le Normand
- INRA, INSERM, Univ Rennes, Nutrition Metabolisms and Cancer, NuMeCan, Rennes, France
| | - Véronique Romé
- INRA, INSERM, Univ Rennes, Nutrition Metabolisms and Cancer, NuMeCan, Rennes, France
| | - Isabelle Nogret
- INRA, INSERM, Univ Rennes, Nutrition Metabolisms and Cancer, NuMeCan, Rennes, France
| | | | - Moez Rhimi
- Micalis, INRA, AgroParisTech, Univ Paris-Saclay, Jouy-en-Josas, France
| | | | - Cécile Canlet
- Toxalim, INRA, Univ Toulouse, ENVT, INP-Purpan, UPS, PF MetaToul-AXIOM, Toulouse, France
| | - Marie Tremblay-Franco
- Toxalim, INRA, Univ Toulouse, ENVT, INP-Purpan, UPS, PF MetaToul-AXIOM, Toulouse, France
| | | | | | - Philippe Gérard
- Micalis, INRA, AgroParisTech, Univ Paris-Saclay, Jouy-en-Josas, France
| | | | - Sophie Blat
- INRA, INSERM, Univ Rennes, Nutrition Metabolisms and Cancer, NuMeCan, Rennes, France.
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15
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Huang YY, Martínez-del Campo A, Balskus EP. Anaerobic 4-hydroxyproline utilization: Discovery of a new glycyl radical enzyme in the human gut microbiome uncovers a widespread microbial metabolic activity. Gut Microbes 2018; 9:437-451. [PMID: 29405826 PMCID: PMC6219649 DOI: 10.1080/19490976.2018.1435244] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The discovery of enzymes responsible for previously unappreciated microbial metabolic pathways furthers our understanding of host-microbe and microbe-microbe interactions. We recently identified and characterized a new gut microbial glycyl radical enzyme (GRE) responsible for anaerobic metabolism of trans-4-hydroxy-l-proline (Hyp). Hyp dehydratase (HypD) catalyzes the removal of water from Hyp to generate Δ1-pyrroline-5-carboxylate (P5C). This enzyme is encoded in the genomes of a diverse set of gut anaerobes and is prevalent and abundant in healthy human stool metagenomes. Here, we discuss the roles HypD may play in different microbial metabolic pathways as well as the potential implications of this activity for colonization resistance and pathogenesis within the human gut. Finally, we present evidence of anaerobic Hyp metabolism in sediments through enrichment culturing of Hyp-degrading bacteria, highlighting the wide distribution of this pathway in anoxic environments beyond the human gut.
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Affiliation(s)
- Yolanda Y. Huang
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
| | | | - Emily P. Balskus
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA,CONTACT Emily P. Balskus Commense Inc., 100 Edwin H. Land Blvd, Cambridge, MA 02142
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16
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Aoki-Yoshida A, Aoki R, Moriya N, Goto T, Kubota Y, Toyoda A, Takayama Y, Suzuki C. Omics Studies of the Murine Intestinal Ecosystem Exposed to Subchronic and Mild Social Defeat Stress. J Proteome Res 2016; 15:3126-38. [PMID: 27482843 DOI: 10.1021/acs.jproteome.6b00262] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The microbiota-gut-brain axis plays an important role in the development of stress-induced mental disorders. We previously established the subchronic and mild social defeat stress (sCSDS) model, a murine experimental model of depression, and investigated the metabolomic profiles of plasma and liver. Here we used omics approaches to identify stress-induced changes in the gastrointestinal tract. Mice exposed to sCSDS for 10 days showed the following changes: (1) elevation of cholic acid and reduction of 5-aminovaleric acid among cecal metabolites; (2) downregulation of genes involved in the immune response in the terminal ileum; (3) a shift in the diversity of the microbiota in cecal contents and feces; and (4) fluctuations in the concentrations of cecal metabolites produced by gut microbiota reflected in plasma and hepatic metabolites. Operational taxonomic units within the family Lachnospiraceae showed an inverse correlation with certain metabolites. The social interaction score correlated with cecal metabolites, IgA, and cecal and fecal microbiota, suggesting that sCSDS suppressed the ileal immune response, altering the balance of microbiota, which together with host cells and host enzymes resulted in a pattern of accumulated metabolites in the intestinal ecosystem distinct from that of control mice.
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Affiliation(s)
- Ayako Aoki-Yoshida
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO) , Tsukuba, Ibaraki 305-0901, Japan
| | - Reiji Aoki
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO) , Tsukuba, Ibaraki 305-0901, Japan
| | - Naoko Moriya
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO) , Tsukuba, Ibaraki 305-0901, Japan
| | - Tatsuhiko Goto
- College of Agriculture, Ibaraki University , Ami, Ibaraki 300-0393, Japan.,Ibaraki University Cooperation between Agriculture and Medical Science (IUCAM) , Ami, Ibaraki 300-0393, Japan
| | - Yoshifumi Kubota
- College of Agriculture, Ibaraki University , Ami, Ibaraki 300-0393, Japan
| | - Atsushi Toyoda
- College of Agriculture, Ibaraki University , Ami, Ibaraki 300-0393, Japan.,Ibaraki University Cooperation between Agriculture and Medical Science (IUCAM) , Ami, Ibaraki 300-0393, Japan.,United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology , Fuchu-city, Tokyo 183-8509, Japan
| | - Yoshiharu Takayama
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO) , Tsukuba, Ibaraki 305-0901, Japan
| | - Chise Suzuki
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO) , Tsukuba, Ibaraki 305-0901, Japan
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17
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Overexpression of transport proteins improves the production of 5-aminovalerate from l-lysine in Escherichia coli. Sci Rep 2016; 6:30884. [PMID: 27510748 PMCID: PMC4980613 DOI: 10.1038/srep30884] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 07/11/2016] [Indexed: 12/25/2022] Open
Abstract
Bacterial transporters mediate the exchanges between intracellular and extracellular environments. Modification of transport route could be applied to speed up the metabolic reactions and promote the production of aimed compounds. Herein, lysine 2-monooxygenase (DavB) and δ-aminovaleramidase (DavA) were co-expressed in Escherichia coli BL21(DE3) to produce nylon-5 monomer 5-aminovalerate from l-lysine. Then, PP2911 (4-aminobutyrate transporter in Pseudomonas putida) and LysP (the lysine specific permease in E. coli) were overexpressed to promote 5-aminovalerate production using whole cells of recombinant E. coli. The constructed E. coli strain overexpressing transport proteins exhibited good 5-aminovalerate production performance and might serve as a promising biocatalyst for 5-aminovalerate production from l-lysine. This strategy not only shows an efficient process for the production of nylon monomers but also might be used in production of other chemicals.
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18
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Lagkouvardos I, Kläring K, Heinzmann SS, Platz S, Scholz B, Engel KH, Schmitt-Kopplin P, Haller D, Rohn S, Skurk T, Clavel T. Gut metabolites and bacterial community networks during a pilot intervention study with flaxseeds in healthy adult men. Mol Nutr Food Res 2015; 59:1614-28. [PMID: 25988339 DOI: 10.1002/mnfr.201500125] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 03/27/2015] [Accepted: 04/13/2015] [Indexed: 01/01/2023]
Abstract
SCOPE Flaxseeds contain the phytoestrogens lignans that must be activated to enterolignans by intestinal bacteria. We investigated the impact of flaxseeds on fecal bacterial communities and their associations with fecal and blood metabolites. METHODS AND RESULTS Nine healthy male adult subjects ingested 0.3 g/kg/day flaxseeds during 1 week. Gut bacteria as well as blood and fecal metabolites were analyzed. Ingestion of flaxseeds triggered a significant increase in the blood concentration of enterolignans, accompanied by fecal excretion of propionate and glycerol. Overall diversity and composition of dominant fecal bacteria remained individual specific throughout the study. Enterolactone production was linked to the abundance of two molecular species identified as Ruminococcus bromii and Ruminococcus lactaris. Most dominant species of the order Bacteroidales were positively associated with fecal concentrations of either acetic, isovaleric, or isobutyric acid, the latter being negatively correlated with blood levels of triglycerides. The relative sequence abundance of one Gemmiger species (Ruminococcaceae) and of Coprococcus comes (Lachnospiraceae) correlated positively with blood levels of LDL cholesterol and triglycerides, respectively. CONCLUSION Flaxseeds increase enterolignan production but do not markedly alter fecal metabolome and dominant bacterial communities. The data underline the possible role of members of the family Ruminococcaceae in the regulation of enterolignan production and blood lipids.
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Affiliation(s)
- Ilias Lagkouvardos
- Research Group Intestinal Microbiome, ZIEL Institute for Food and Health, Technische Universität München, Freising, Germany.,Chair of Nutrition and Immunology, Technische Universität München, Freising, Germany
| | - Karoline Kläring
- Research Group Intestinal Microbiome, ZIEL Institute for Food and Health, Technische Universität München, Freising, Germany
| | - Silke S Heinzmann
- Analytical BioGeoChemistry, Helmholtz Zentrum München, Neuherberg, Freising, Germany
| | | | - Birgit Scholz
- General Food Technology, Technische Universität München, Freising, Germany
| | - Karl-Heinz Engel
- General Food Technology, Technische Universität München, Freising, Germany
| | - Philippe Schmitt-Kopplin
- Analytical BioGeoChemistry, Helmholtz Zentrum München, Neuherberg, Freising, Germany.,Chair of Analytical Food Chemistry, Technische Universität München, Freising, Germany
| | - Dirk Haller
- Chair of Nutrition and Immunology, Technische Universität München, Freising, Germany
| | - Sascha Rohn
- Food Chemistry, Hamburg University, Hamburg, Germany
| | - Thomas Skurk
- ZIEL Human Study Unit, Technische Universität München, Freising, Germany
| | - Thomas Clavel
- Research Group Intestinal Microbiome, ZIEL Institute for Food and Health, Technische Universität München, Freising, Germany
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19
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Juárez JF, Zamarro MT, Eberlein C, Boll M, Carmona M, Díaz E. Characterization of the mbd cluster encoding the anaerobic 3-methylbenzoyl-CoA central pathway. Environ Microbiol 2012; 15:148-66. [PMID: 22759228 DOI: 10.1111/j.1462-2920.2012.02818.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mbd cluster encoding genes of the 3-methylbenzoyl-CoA pathway involved in the anaerobic catabolism of 3-methylbenzoate and m-xylene was characterized for the first time in the denitrifying β-Proteobacterium Azoarcus sp. CIB. The mbdA gene product was identified as a 3-methylbenzoate-CoA ligase required for 3-methylbenzoate activation; its substrate spectrum was unique in activating all three methylbenzoate isomers. An inducible 3-methylbenzoyl-CoA reductase (mbdONQP gene products), displaying significant amino acid sequence similarities to known class I benzoyl-CoA reductases catalysed the ATP-dependent reduction of 3-methylbenzoyl-CoA to a methyldienoyl-CoA. The mbdW gene encodes a methyldienoyl-CoA hydratase that hydrated the methyldienoyl-CoA to a methyl-6-hydroxymonoenoyl-CoA compound. The mbd cluster also contains the genes predicted to be involved in the subsequent steps of the 3-methylbenzoyl-CoA pathway as well as the electron donor system for the reductase activity. Whereas the catabolic mbd genes are organized in two divergent inducible operons, the putative mbdR regulatory gene was transcribed separately and showed constitutive expression. The efficient expression of the mbd genes required the oxygen-dependent AcpR activator, and it was subject of carbon catabolite repression by some organic acids and amino acids. Sequence analyses suggest that the mbd gene cluster was recruited by Azoarcus sp. CIB through horizontal gene transfer.
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Affiliation(s)
- Javier F Juárez
- Environmental Biology Department, Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
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20
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Martin FPJ, Collino S, Rezzi S. 1H NMR-based metabonomic applications to decipher gut microbial metabolic influence on mammalian health. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2011; 49 Suppl 1:S47-S54. [PMID: 22290709 DOI: 10.1002/mrc.2810] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Recent advances in molecular biology and microbiology have increased awareness on the importance of the gut microbiota to the overall mammalian host's health status. There is therefore increasing interest in nutrition research to characterise the molecular foundations of the gut microbial mammalian crosstalk at both physiological and biochemical pathway levels. Tackling these challenges can be achieved through systems biology strategies based on the measurement of metabolites to assess the highly complex metabolic exchanges between diverse biological compartments, including organs, biofluids and microbial symbionts. By opening a direct biochemical window into the metabolome, metabonomics is uniquely suited for the identification of biomarkers providing better understanding of these complex metabolic processes. Recent applications of top-down system biology based on (1)H NMR spectroscopy coupled to advanced chemometric modelling approaches provided compelling evidence that system-wide and organ-specific changes in biochemical processes may be finely tuned by gut microbial activities. This review aims at describing current advances in NMR-based metabonomics where the main objective is to discern the molecular pathways and biochemical mechanisms under the influence of the gut microbiota. Furthermore, emphasis is given on nutritional approaches, where the quest for homeostatic balance is dependent not only on the host but also on the nutritional modulation of the gut microbiota-host metabolic interactions, using, for instance, probiotics and prebiotics.
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Affiliation(s)
- François-Pierre J Martin
- BioAnalytical Science, Metabonomics & Biomarkers, Nestlé Research Center, Lausanne, Switzerland.
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21
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Martin FPJ, Sprenger N, Montoliu I, Rezzi S, Kochhar S, Nicholson JK. Dietary modulation of gut functional ecology studied by fecal metabonomics. J Proteome Res 2010; 9:5284-95. [PMID: 20806900 DOI: 10.1021/pr100554m] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A major source of intestinal metabolites results from both host and microbial processing of dietary nutrients. (1)H NMR-based metabolic profiling of mouse feces was carried out over time in different microbiome mouse models, including conventional (n = 9), conventionalized (n = 10), and "humanized" gnotobiotic mice inoculated with a model of human baby microbiota (HBM, n = 17). HBM mice were supplemented with Lactobacillus paracasei with (n = 10) and without (n = 7) prebiotics. Animals not supplemented with prebiotics received a diet enriched in glucose and lactose as placebo. In conventionalized animals, microbial populations and activities converged in term of multivariate mapping toward conventional mice. Both groups decreased bacterial processing of dietary proteins when switching to a diet enriched in glucose and lactose, as described with low levels of 5-aminovalerate, acetate, and propionate and high levels of lysine and arginine. The HBM model differs from conventional and conventionalized microbiota in terms of type, proportion, and metabolic activity of gut bacteria (lower short chain fatty acids (SCFAs), lactate, 5-aminovalerate, and oligosaccharides, higher bile acids and choline). The probiotics supplementation of HBM mice was associated with a specific amino acid pattern that can be linked to L. paracasei proteolytic activities. The combination of L. paracasei with the galactosyl-oligosaccharide prebiotics was related to the enhanced growth of bifidobacteria and lactobacilli, and a specific metabolism of carbohydrates, proteins, and SCFAs. The present study describes how the assessment of metabolic changes in feces may provide information for studying nutrient-microbiota relationships in different microbiome mouse models.
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Bertin L, Lampis S, Todaro D, Scoma A, Vallini G, Marchetti L, Majone M, Fava F. Anaerobic acidogenic digestion of olive mill wastewaters in biofilm reactors packed with ceramic filters or granular activated carbon. WATER RESEARCH 2010; 44:4537-49. [PMID: 20619436 DOI: 10.1016/j.watres.2010.06.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2010] [Revised: 06/04/2010] [Accepted: 06/11/2010] [Indexed: 05/16/2023]
Abstract
Four identically configured anaerobic packed bed biofilm reactors were developed and employed in the continuous acidogenic digestion of olive mill wastewaters to produce volatile fatty acids (VFAs), which can be exploited in the biotechnological production of polyhydroxyalkanoates. Ceramic porous cubes or granular activated carbon were used as biofilm supports. Aside packing material, the role of temperature and organic loading rate (OLR) on VFA production yield and mixture composition were also studied. The process was monitored through a chemical, microbiological and molecular biology integrated procedure. The highest wastewater acidification yield was achieved with the ceramic-based technology at 25 degrees C, with an inlet COD and an OLR of about 17 g/L and 13 g/L/day, respectively. Under these conditions, about the 66% of the influent COD (not including its VFA content) was converted into VFAs, whose final amount represented more than 82% of the influent COD. In particular, acetic, propionic and butyric acids were the main VFAs by composing the 55.7, 21.5 and 14.4%, respectively, of the whole VFA mixture. Importantly, the relative concentrations of acetate and propionate were affected by the OLR parameter. The nature of the packing material remarkable influenced the process performances, by greatly affecting the biofilm bacterial community structure. In particular, ceramic cubes favoured the immobilization of Firmicutes of the genera Bacillus, Paenibacillus and Clostridium, which were probably involved in the VFA producing process.
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Affiliation(s)
- Lorenzo Bertin
- Department of Applied Chemistry and Material Science (DICASM), Faculty of Engineering, University of Bologna, via Terracini 28, 40131 Bologna, Italy.
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23
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Systemic multicompartmental effects of the gut microbiome on mouse metabolic phenotypes. Mol Syst Biol 2008; 4:219. [PMID: 18854818 PMCID: PMC2583082 DOI: 10.1038/msb.2008.56] [Citation(s) in RCA: 251] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2008] [Revised: 07/15/2008] [Indexed: 02/08/2023] Open
Abstract
To characterize the impact of gut microbiota on host metabolism, we investigated the multicompartmental metabolic profiles of a conventional mouse strain (C3H/HeJ) (n=5) and its germ-free (GF) equivalent (n=5). We confirm that the microbiome strongly impacts on the metabolism of bile acids through the enterohepatic cycle and gut metabolism (higher levels of phosphocholine and glycine in GF liver and marked higher levels of bile acids in three gut compartments). Furthermore we demonstrate that (1) well-defined metabolic differences exist in all examined compartments between the metabotypes of GF and conventional mice: bacterial co-metabolic products such as hippurate (urine) and 5-aminovalerate (colon epithelium) were found at reduced concentrations, whereas raffinose was only detected in GF colonic profiles. (2) The microbiome also influences kidney homeostasis with elevated levels of key cell volume regulators (betaine, choline, myo-inositol and so on) observed in GF kidneys. (3) Gut microbiota modulate metabotype expression at both local (gut) and global (biofluids, kidney, liver) system levels and hence influence the responses to a variety of dietary modulation and drug exposures relevant to personalized health-care investigations.
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Saric J, Li JV, Wang Y, Keiser J, Bundy JG, Holmes E, Utzinger J. Metabolic profiling of an Echinostoma caproni infection in the mouse for biomarker discovery. PLoS Negl Trop Dis 2008; 2:e254. [PMID: 18596973 PMCID: PMC2432044 DOI: 10.1371/journal.pntd.0000254] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2008] [Accepted: 05/21/2008] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Metabolic profiling holds promise with regard to deepening our understanding of infection biology and disease states. The objectives of our study were to assess the global metabolic responses to an Echinostoma caproni infection in the mouse, and to compare the biomarkers extracted from different biofluids (plasma, stool, and urine) in terms of characterizing acute and chronic stages of this intestinal fluke infection. METHODOLOGY/PRINCIPAL FINDINGS Twelve female NMRI mice were infected with 30 E. caproni metacercariae each. Plasma, stool, and urine samples were collected at 7 time points up to day 33 post-infection. Samples were also obtained from non-infected control mice at the same time points and measured using (1)H nuclear magnetic resonance (NMR) spectroscopy. Spectral data were subjected to multivariate statistical analyses. In plasma and urine, an altered metabolic profile was already evident 1 day post-infection, characterized by reduced levels of plasma choline, acetate, formate, and lactate, coupled with increased levels of plasma glucose, and relatively lower concentrations of urinary creatine. The main changes in the urine metabolic profile started at day 8 post-infection, characterized by increased relative concentrations of trimethylamine and phenylacetylglycine and lower levels of 2-ketoisocaproate and showed differentiation over the course of the infection. CONCLUSION/SIGNIFICANCE The current investigation is part of a broader NMR-based metabonomics profiling strategy and confirms the utility of this approach for biomarker discovery. In the case of E. caproni, a diagnosis based on all three biofluids would deliver the most comprehensive fingerprint of an infection. For practical purposes, however, future diagnosis might aim at a single biofluid, in which case urine would be chosen for further investigation, based on quantity of biomarkers, ease of sampling, and the degree of differentiation from the non-infected control group.
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Affiliation(s)
- Jasmina Saric
- Department of Public Health and Epidemiology, Swiss Tropical Institute, Basel, Switzerland
- Department of Biomolecular Medicine, Division of Surgery, Oncology, Reproductive Biology and Anaesthetics (SORA), Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Jia V. Li
- Department of Public Health and Epidemiology, Swiss Tropical Institute, Basel, Switzerland
- Department of Biomolecular Medicine, Division of Surgery, Oncology, Reproductive Biology and Anaesthetics (SORA), Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Yulan Wang
- Department of Biomolecular Medicine, Division of Surgery, Oncology, Reproductive Biology and Anaesthetics (SORA), Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Jennifer Keiser
- Department of Medical Parasitology and Infection Biology, Swiss Tropical Institute, Basel, Switzerland
| | - Jake G. Bundy
- Department of Biomolecular Medicine, Division of Surgery, Oncology, Reproductive Biology and Anaesthetics (SORA), Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Elaine Holmes
- Department of Biomolecular Medicine, Division of Surgery, Oncology, Reproductive Biology and Anaesthetics (SORA), Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Jürg Utzinger
- Department of Public Health and Epidemiology, Swiss Tropical Institute, Basel, Switzerland
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Buckel W. Unusual dehydrations in anaerobic bacteria: considering ketyls (radical anions) as reactive intermediates in enzymatic reactions. FEBS Lett 1996; 389:20-4. [PMID: 8682197 DOI: 10.1016/0014-5793(96)00530-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Dehydratases have been detected in anaerobic bacteria which use 2-, 4- or 5-hydroxyacyl-CoA as substrates and are involved in the removal of hydrogen atoms from the unactivated beta- or gamma-positions. In addition there are bacterial dehydratases acting on 1,2-diols which are substrates lacking any activating group. These enzymes contain either FAD, or flavins + iron-sulfur clusters or coenzyme B12. It has been proposed that the overall dehydrations are actually reductions followed by oxidations or vice versa mediated by these prosthetic groups. Whereas the gamma-hydrogen of 5-hydroxyvaleryl-CoA is activated by a transient two-election alpha, beta-oxidation, the other substrates are proposed to require either a transient one-electron reduction or an oxidation to a ketyl (radical anion).
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Affiliation(s)
- W Buckel
- Laboratorium für Mikrobiologie, Philipps-Universität, Marburg, Germany.
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26
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Clostridium viride sp. nov., a strictly anaerobic bacterium using 5-aminovalerate as growth substrate, previously assigned to Clostridium aminovalericum. Arch Microbiol 1994. [DOI: 10.1007/bf00282102] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Eikmanns U, Buta C, Buckel W, Pai EF. Crystallization and preliminary X-ray diffraction study of the green flavoenzyme 5-hydroxyvaleryl-CoA dehydratase/dehydrogenase from Clostridium aminovalericum. Proteins 1994; 19:269-71. [PMID: 7937739 DOI: 10.1002/prot.340190310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The bifunctional flavoenzyme 5-hydroxyvaleryl-CoA dehydratase/dehydrogenase has been crystallized from solutions containing ammonium sulfate (form I) or polyethylene glycol (form II) as precipitant. In both cases, the crystals grew in the monoclinic space group C2. The unit cell dimensions for form I crystals were determined as a = 162.8 A, b = 71.8 A, c = 83.5 A, beta = 109.1 degrees; corresponding values for form II crystals were a = 161.2 A, b = 71.6 A, c = 82.2 A, beta = 109.3 degrees. In both cases most probably there are two monomers per asymmetric unit. The crystals diffract to about 2 A resolution and are rather stable in the X-ray beam.
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Affiliation(s)
- U Eikmanns
- Department of Biochemistry, University of Toronto, Ontario, Canada
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Eikmanns U, Buckel W. A green 2,4-pentadienoyl-CoA reductase from Clostridium aminovalericum. EUROPEAN JOURNAL OF BIOCHEMISTRY 1991; 198:263-6. [PMID: 2040289 DOI: 10.1111/j.1432-1033.1991.tb16010.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
2,4-Pentadienoyl-CoA reductase from Clostridium aminovalericum was purified to homogeneity (170-182 kDa). PAGE in the presence of SDS revealed a single band (44 kDa) indicating a homotetrameric structure. The native enzyme had a green colour and contained 0.4 mol FAD/subunit. Its unusual ultraviolet/visible-spectrum showed absorption maxima at 270, 402 and 715 nm as well as shoulders at 278, 360, 450 and 500 nm. Removal of the prosthetic group at pH 2 in the presence of salt and charcoal yielded a colourless and completely inactive apoenzyme, which could be reconstituted with FAD (not with FMN) to an active holoenzyme showing a normal flavoprotein spectrum (peaks at 369 nm and 436 nm). Thereby the FAD content increased to 0.9 mol/subunit with a concomitant rise in activity to 200% of the original value. Anaerobic reduction of the green enzyme by dithionite and reoxidation by air afforded a green preparation with a spectrum similar to that of the native enzyme. Addition of excess FAD to the green reductase also increased the activity by a factor of two. The green enzyme catalysed the oxidation of (E)-3-pentenoyl-CoA or (E)-3-hexenoyl-CoA to 2,4-pentadienoyl-CoA or 2,4-hexenoyl-CoA, respectively. 2-Pentenoyl-CoA or 4-pentenoyl-CoA were not oxidised. Meldola blue (8-dimethylamino-2,3-benzophenoxazine) and 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyltetrazolium chloride (V = 26 nkat/mg protein) or ferricenium hexafluorophosphate (V = 1900 nkat/mg), but not NAD(P), served as electron acceptors. Reduction of 2,4-pentadienoyl-CoA (V = 370 nkat/mg) was observed with reduced benzyl viologen, but not with NAD(P)H as an electron donor. Although the enzyme had some pentenoyl-CoA delta-isomerase activity (1.2 nkat/mg), the only product of the reduction was 3-pentenoyl-CoA rather than 2-pentenoyl-CoA.
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Affiliation(s)
- U Eikmanns
- Laboratorium für Mikrobiologie, Fachbereich Biologie der Philipps-Universität Marburg, Federal Republic of Germany
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Eikmanns U, Buckel W. Crystalline green 5-hydroxyvaleryl-CoA dehydratase from Clostridium aminovalericum. EUROPEAN JOURNAL OF BIOCHEMISTRY 1991; 197:661-8. [PMID: 2029896 DOI: 10.1111/j.1432-1033.1991.tb15956.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A green enzyme from Clostridium aminovalericum with valeryl-CoA dehydrogenase activity was purified to homogeneity (169 +/- 3 kDa) and crystallized. By SDS/PAGE, one type of subunit (42 kDa) was detected indicating a homotetrameric structure. The unusual ultraviolet/visible spectrum of the green enzyme (maxima at 394 nm, 438 nm and 715 nm) was converted to a normal flavoprotein spectrum either by reduction with dithionite and reoxidation under air, or by removal of the prosthetic group at pH 2 and reconstitution with FAD (not FMN). Besides FAD (4 mol/169 kDa), the enzyme contained 4 mol of a CoA ester which was similar but not identical to 5-hydroxy-2-pentenoyl-CoA. The reconstituted holoenzyme as well as the native green enzyme, but not the apoenzyme, catalysed the reversible dehydration of 5-hydroxyvaleryl-CoA to 4-pentenoyl-CoA in the absence of an external electron acceptor. In its presence (preferentially ferricenium ion), the green or yellow enzyme catalysed the formation of (E)-5-hydroxy-2-pentenoyl-CoA and 2,4-pentadienoyl-CoA either from 4-pentenoyl-CoA or from 5-hydroxyvaleryl-CoA. The reversible hydration of 2,4-pentadienoyl-CoA to (E)-5-hydroxy-2-pentenoyl-CoA was mediated by both enzymes as well as by the apoenzyme in the absence of FAD. Hydration of 4-pentenoate in 2H2O yielded optically active 5-hydroxy[2,4-2H2]valerate by the combined action of 5-hydroxyvalerate CoA-transferase, the green dehydratase and catalytical amounts of acetyl-CoA. The data show that the reversible hydration of the isolated double bond of 4-pentenoyl-CoA to 5-hydroxyvaleryl-CoA. which apparently violates the Markovnikov rule, is preceded by oxidation to 2,4-pentadienoyl-CoA. The latter compound, a vinyl analogue of 2-enoyl-CoA, is then easily hydrated to (E)-5-hydroxy-2-pentenoyl-CoA and finally reduced to 5-hydroxyvaleryl-CoA.
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Affiliation(s)
- U Eikmanns
- Laboratorium für Mikrobiologie, Fachbereich Biologie, Philipps-Universität Marburg, Federal Republic of Germany
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Eikmanns U, Buckel W. Properties of 5-hydroxyvalerate CoA-transferase from Clostridium aminovalericum. BIOLOGICAL CHEMISTRY HOPPE-SEYLER 1990; 371:1077-82. [PMID: 2085413 DOI: 10.1515/bchm3.1990.371.2.1077] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
5-Hydroxyvalerate CoA-transferase from Clostridium aminovalericum, strain T2-7, was purified approximately 100-fold to homogeneity. The molecular mass of the native enzyme was determined by three different methods to be 178 +/- 11 kDa; that of the subunit was 47 kDa, indicating a homotetrameric structure. The following CoA esters acted as substrates (decreasing specificity, V/Km): 5-hydroxyvaleryl-CoA greater than propionyl-CoA greater than acetyl-CoA greater than (Z)-5-hydroxy-2-pentenoyl-CoA greater than butyryl-CoA greater than valeryl-CoA. 4-Pentenoate and 3-pentenoate were also activated by acetyl-CoA to the corresponding CoA esters, whereas crotonate, (E)-5-hydroxy-2-pentenoate, (E)-2-pentenoate and 2,4-pentadienoate were not attacked. 5-Hydroxyvalerate CoA-transferase showed ping-pong kinetics and was inactivated by sodium boranate only in the presence of a CoA substrate. This indicated the formation of a thiolester between a specific carboxyl group of the enzyme and CoASH during the course of the reaction. The CoA-transferase was inhibited by ATP and CTP, slightly by ADP, GTP and UTP, but not by AMP. The inhibition by ATP was competitive towards CoA esters and noncompetitive towards acetate.
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Affiliation(s)
- U Eikmanns
- Laboratorium für Mikrobiologie, Fachbereich Biologie, Philipps-Universität Marburg
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