1
|
Perez RH, Zendo T, Sonomoto K. Multiple bacteriocin production in lactic acid bacteria. J Biosci Bioeng 2022; 134:277-287. [DOI: 10.1016/j.jbiosc.2022.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 11/30/2022]
|
2
|
Desouky SE, Abu-Elghait M, Fayed EA, Selim S, Yousuf B, Igarashi Y, Abdel-Wahab BA, Mohammed Alsuhaibani A, Sonomoto K, Nakayama J. Secondary Metabolites of Actinomycetales as Potent Quorum Sensing Inhibitors Targeting Gram-Positive Pathogens: In Vitro and In Silico Study. Metabolites 2022; 12:metabo12030246. [PMID: 35323689 PMCID: PMC8955454 DOI: 10.3390/metabo12030246] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 03/07/2022] [Accepted: 03/08/2022] [Indexed: 02/07/2023] Open
Abstract
Anti-virulence agents are non-bacteriostatic and non-bactericidal emerging therapeutic options which hamper the production of virulence factors in pathogenic flora. In Staphylococcus aureus and Enterococcus faecalis, regulation of virulence genes’ expression occurs through the cyclic peptide-mediated accessory gene regulator (agr) and its ortholog fsr quorum sensing systems, respectively. In the present study, we screened a set of 54 actinomycetales secondary metabolites as novel anti-virulence compounds targeting quorum sensing system of the Gram-positive bacteria. The results indicated that four compounds, Phenalinolactones A–D, BU–4664LMe, 4,5-dehydrogeldamycin, and Questinomycin A, potentially inhibit the agr quorum sensing system and hemolytic activity of S. aureus. On the other hand, Decatromicin A and B, Okilactomycin, Rishirilide A, Abyssomicin I, and Rebeccamycin selectively blocked the fsr quorum sensing system and the gelatinase production in E. faecalis at sub-lethal concentrations. Interestingly, Synerazol uniquely showed the capability to inhibit both fsr and agr quorum sensing systems. Further, in silico molecular docking studies were performed which provided closer insights into the mode of action of these compounds and proposed that the inhibitory activity of these compounds could be attributed to their potential ability to bind to the ATP-active site of S. aureus AgrA. Taken together, our study highlights the potential of actinomycetales secondary metabolites with diverse structures as anti-virulence quorum sensing inhibitors.
Collapse
Affiliation(s)
- Said E. Desouky
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt;
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan; (B.Y.); (K.S.); (J.N.)
- Correspondence:
| | - Mohammed Abu-Elghait
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt;
| | - Eman A. Fayed
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo 11754, Egypt;
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 72341, Saudi Arabia;
| | - Basit Yousuf
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan; (B.Y.); (K.S.); (J.N.)
| | - Yasuhiro Igarashi
- Biotechnology Research Center, Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan;
| | - Basel A. Abdel-Wahab
- Department of Medical Pharmacology, College of Medicine, Assiut University, Assiut 7111, Egypt;
- Department of Pharmacology, College of Pharmacy, Najran University, Najran 1988, Saudi Arabia
| | - Amnah Mohammed Alsuhaibani
- Department of Physical Sport Science, College of Education, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan; (B.Y.); (K.S.); (J.N.)
| | - Jiro Nakayama
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan; (B.Y.); (K.S.); (J.N.)
| |
Collapse
|
3
|
Elkhateeb W, Hamdan A, Zendo T, Ishibashi N, Daba G, Tashiro Y, Sonomoto K. Evaluation of fresh water lactic acid bacteria for production of optically pure L-(+)-lactic acid. Egypt Pharmaceut J 2022. [DOI: 10.4103/epj.epj_33_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
4
|
Perez R, Aguimatang RH, Zendo T, Sonomoto K. BIOENGINEERING OF THE CIRCULAR BACTERIOCIN FROM ENTEROCOCCUS FAECIUM NKR-5-3 BY NNK-SCANNING TO ENHANCE ITS BIOACTIVITY. J microb biotech food sci 2021. [DOI: 10.15414/jmbfs.4309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Bacteriocins are gene-encoded antimicrobial peptides that are traditionally appreciated as safe food preservative in the food industry and as possible alternative to conventional antibiotics in the pharmaceutical industry. Enterocin NKR-5-3B is a well characterized circular bacteriocin that possess exceptional stability due to the circular nature of its structure. In this paper, a mutant library of this bacteriocin was constructed through NNK-scanning whereby the presumed critical residues were targeted hoping to obtain bacteriocin derivatives with enhanced bioactivity. Thirteen (13) mutant phenotypes exhibited bioactivity enhancement relative to the native bacteriocin. The most notable bioactivity increases were observed from the phenotypes expressing V32C, V32A, and L40G that exhibited 233, 217, and 200% relative bioactivity, respectively. In-silico analyses of the resulting bacteriocin derivatives showed significant changes in the physico-chemical properties of the bacteriocin derivatives, particularly its hydrophobicity index, as a consequence of the introduced mutation. The V32C bacteriocin derivative which exhibited the strongest bioactivity enhancement was found to exhibit a reduction of the molecular surface hydrophobicity and isoelectric point. These changes may have contributed in the enhancement of its bioactivity. The identification of these critical mutations is highly valuable as basis for future studies on the rational design of bioengineered bacteriocins with enhanced bioactivity.
Collapse
|
5
|
Fujinami D, Motomura H, Oshima H, Mahin AA, Elsayed KM, Zendo T, Sugita Y, Sonomoto K, Kohda D. Correction to "Mosaic Cooperativity in Slow Polypeptide Topological Isomerization Revealed by Residue-Specific NMR Thermodynamic Analysis". J Phys Chem Lett 2021; 12:10766-10767. [PMID: 34714649 DOI: 10.1021/acs.jpclett.1c03473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
|
6
|
Ishibashi N, Matsumoto N, Perez RH, Iwatani S, Sugino H, Zendo T, Wilaipun P, Leelawatcharamas V, Nakayama J, Sonomoto K. Molecular characterization of the possible regulation of multiple bacteriocin production through a three-component regulatory system in Enterococcus faecium NKR-5-3. J Biosci Bioeng 2020; 131:S1389-1723(20)30368-6. [PMID: 34756351 DOI: 10.1016/j.jbiosc.2020.09.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 09/19/2020] [Accepted: 09/28/2020] [Indexed: 01/01/2023]
Abstract
Enterococcus faecium NKR-5-3 produces multiple-bacteriocins, enterocins NKR-5-3A, B, C, D, and Z (Ent53A, Ent53B, Ent53C, Ent53D, and Ent53Z). However, the biosynthetic mechanisms on how their productions are regulated are yet to be fully understood. In silico analysis revealed putative promoters and terminators in the enterocin NKR-5-3ACDZ gene cluster, and the putative direct repeats (5'-ATTTTAGGATA-3') were conserved upstream of each promoter. Transcriptional analysis by quantitative real-time polymerase chain reaction (PCR) of the biosynthetic genes for the enterocins NKR-5-3 suggested that an inducing peptide (Ent53D) regulates the transcription of the structure genes and corresponding biosynthetic genes of enterocins NKR-5-3, except for Ent53B (a circular bacteriocin), thus consequently regulating their production. Moreover, transcriptional analysis of some knock-out mutants showed that the production of Ent53A, C, D and Z is controlled by a three-component regulatory system (TCS) consisting of Ent53D, EnkR (response regulator), and EnkK (histidine kinase). The production of the circular bacteriocin Ent53B appeared to be independent from this TCS. Nevertheless, disrupting the TCS by deletion of a single component (enkD, enkR and enkK) resulted in a slight increase of enkB transcription and consequently the production of Ent53B, presumably, as an indirect consequence of the increase of available energy to the strain NKR-5-3. Here, we demonstrate the regulatory control of the multiple bacteriocin production of strain NKR-5-3 likely through the TCS consisting of Ent53D, EnkR, and EnkK. The information of the sharing of the regulatory machinery between bacteriocins in strain NKR-5-3 can be useful in its future application such as designing strategies to effectively dispense its multiple bacteriocin arsenal.
Collapse
Affiliation(s)
- Naoki Ishibashi
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Naho Matsumoto
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Rodney Honrada Perez
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan; National Institute of Molecular Biology and Biotechnology (BIOTECH), University of the Philippines Los Baños (UPLB), Los Baños, Laguna 4031, Philippines
| | - Shun Iwatani
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Haruki Sugino
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Takeshi Zendo
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan.
| | - Pongtep Wilaipun
- Department of Fishery Products, Faculty of Fisheries, Kasetsart University, 50 Paholyothin Rd., Chatuchak, Bangkok 10900, Thailand
| | - Vichien Leelawatcharamas
- Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, 50 Paholyothin Rd., Chatuchak, Bangkok 10900, Thailand
| | - Jiro Nakayama
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Kenji Sonomoto
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| |
Collapse
|
7
|
Zendo T, Ohashi C, Maeno S, Piao X, Salminen S, Sonomoto K, Endo A. Kunkecin A, a New Nisin Variant Bacteriocin Produced by the Fructophilic Lactic Acid Bacterium, Apilactobacillus kunkeei FF30-6 Isolated From Honey Bees. Front Microbiol 2020; 11:571903. [PMID: 33042078 PMCID: PMC7525160 DOI: 10.3389/fmicb.2020.571903] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/12/2020] [Indexed: 12/27/2022] Open
Abstract
Apilactobacillus kunkeei FF30-6 isolated from healthy honey bees synthesizes the bacteriocin, which exhibits antimicrobial activity against Melissococcus plutonius. The bacteriocin, kunkecin A, was purified through three-step chromatography, and mass spectrometry revealed that its relative molecular mass was 4218.3. Edman degradation of purified kunkecin A showed only the N-terminal residue, isoleucine. Hence, alkaline alkylation made the subsequent amino acid residues accessible to Edman degradation, and 30 cycles were sequenced with 11 unidentified residues. Whole genome sequencing of A. kunkeei FF30-6, followed by Sanger sequencing, revealed that the genes encoding the proteins involved in lantibiotic biosynthesis were within the plasmid, pKUNFF30-6. Most of the identified proteins exhibited significant sequence similarities to the biosynthetic proteins of nisin A and its variants, such as subtilin. However, the kunkecin A gene cluster lacked the genes corresponding to nisI, nisR, and nisK of the nisin A biosynthetic gene cluster. A comparison of the gene products of kukA and nisA (kunkecin A and nisin A structural genes, respectively) suggested that they had similar post-translational modifications. Furthermore, the structure of kunkecin A was proposed based on a comparison of the observed and calculated relative molecular masses of kunkecin A. The structural analysis revealed that kunkecin A and nisin A had a similar mono-sulfide linkage pattern. Purified kunkecin A exhibited a narrow antibacterial spectrum, but high antibacterial activity against M. plutonius. Kunkecin A is the first bacteriocin to be characterized in fructophilic lactic acid bacteria and is the first nisin-type lantibiotic found in the family Lactobacillaceae.
Collapse
Affiliation(s)
- Takeshi Zendo
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Chihiro Ohashi
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Shintaro Maeno
- Department of Food, Aroma and Cosmetic Chemistry, Faculty of Bioindustry, Tokyo University of Agriculture, Hokkaido, Japan
| | - Xingguo Piao
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Seppo Salminen
- Functional Foods Forum, University of Turku, Turku, Finland
| | - Kenji Sonomoto
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Akihito Endo
- Department of Food, Aroma and Cosmetic Chemistry, Faculty of Bioindustry, Tokyo University of Agriculture, Hokkaido, Japan
| |
Collapse
|
8
|
Sushida H, Sakei M, Perez RH, Ishibashi N, Zendo T, Wilaipun P, Leelawatcharamas V, Nakayama J, Sonomoto K. Processing and secretion of non-cognate bacteriocins by EnkT, an ABC transporter from a multiple-bacteriocin producer, Enterococcus faecium NKR-5-3. J Biosci Bioeng 2020; 130:596-603. [PMID: 32855046 DOI: 10.1016/j.jbiosc.2020.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 11/24/2022]
Abstract
EnkT is an ATP-binding cassette (ABC) transporter produced by Enterococcus faecium NKR-5-3, which is responsible for the secretion of multiple bacteriocins; enterocins NKR-5-3A, C, D, and Z (Ent53A, C, D, and Z). EnkT has been shown to possess a tolerant recognition mechanism that enables it to secrete the mature Ent53C from a chimeric precursor peptide containing the leader peptide moieties that are derived from different heterologous bacteriocins. In this study, to further characterize EnkT, we aimed to investigate the capacity of EnkT to recognize, process, and secrete non-cognate bacteriocins, which belong to different subclasses of class II. For this, the non-cognate bacteriocin precursor peptides, including enterocin A, pediocin PA-1, lactococcin Q, lactococcin A, and lacticin Q were co-expressed with EnkT, and thereafter, the production of the mature forms of these non-cognate bacteriocins was assessed. Our results revealed that EnkT could potentially recognize, process, and secrete the non-cognate bacteriocins with an exception of the leaderless bacteriocin, lacticin Q. Moreover, the processing and secretion efficiencies of these heterologous non-cognate bacteriocins by EnkT were further enhanced when the leader peptide moiety was replaced with the Ent53C leader peptide (derived from a native NKR-5-3 bacteriocin). The findings of this study describe the wide substrate tolerance of this ABC transporter, EnkT, that can be exploited in the future in establishing effective bacteriocin production systems adaptive to complex fermentation conditions common in many food systems.
Collapse
Affiliation(s)
- Hirotoshi Sushida
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Miyuki Sakei
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Rodney H Perez
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan; National Institute of Molecular Biology and Biotechnology (BIOTECH), University of the Philippines Los Baños (UPLB), Los Baños, Laguna 4031, Philippines
| | - Naoki Ishibashi
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Takeshi Zendo
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan.
| | - Pongtep Wilaipun
- Department of Fishery Products, Kasetsart University, 50 Paholyothin Rd., Chatuchak, Bangkok 10900, Thailand
| | - Vichien Leelawatcharamas
- Department of Biotechnology, Kasetsart University, 50 Paholyothin Rd., Chatuchak, Bangkok 10900, Thailand
| | - Jiro Nakayama
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Kenji Sonomoto
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| |
Collapse
|
9
|
Wang Y, Chan KL, Abdel-Rahman MA, Sonomoto K, Leu SY. Correction to: Dynamic simulation of continuous mixed sugar fermentation with increasing cell retention time for lactic acid production using Enterococcus mundtii QU 25. Biotechnol Biofuels 2020; 13:140. [PMID: 32788925 PMCID: PMC7416399 DOI: 10.1186/s13068-020-01772-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 07/18/2020] [Indexed: 06/11/2023]
Abstract
[This corrects the article DOI: 10.1186/s13068-020-01752-6.].
Collapse
Affiliation(s)
- Ying Wang
- Department of Biological Science, College of Life Sciences, Sichuan Normal University, Chengdu, 610101 Sichuan China
- Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Ka-Lai Chan
- Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Mohamed Ali Abdel-Rahman
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka, Nishi‐ku, Fukuoka, Japan
- Botany and Microbiology Department, Faculty of Science (Boys), Al-Azhar University, PN:11884, Nasr City, Cairo, Egypt
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka, Nishi‐ku, Fukuoka, Japan
| | - Shao-Yuan Leu
- Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
| |
Collapse
|
10
|
Wang Y, Chan KL, Abdel-Rahman MA, Sonomoto K, Leu SY. Dynamic simulation of continuous mixed sugar fermentation with increasing cell retention time for lactic acid production using Enterococcus mundtii QU 25. Biotechnol Biofuels 2020; 13:112. [PMID: 32607127 PMCID: PMC7318410 DOI: 10.1186/s13068-020-01752-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND The simultaneous and effective conversion of both pentose and hexose in fermentation is a critical and challenging task toward the lignocellulosic economy. This study aims to investigate the feasibility of an innovative co-fermentation process featuring with a cell recycling unit (CF/CR) for mixed sugar utilization. A l-lactic acid-producing strain Enterococcus mundtii QU 25 was applied in the continuous fermentation process, and the mixed sugars were utilized at different productivities after the flowing conditions were changed. A mathematical model was constructed with the experiments to optimize the biological process and clarify the cell metabolism through kinetics analysis. The structured model, kinetic parameters, and achievement of the fermentation strategy shall provide new insights toward whole sugar fermentation via real-time monitoring for process control and optimization. RESULTS Significant carbon catabolite repression in co-fermentation using a glucose/xylose mixture was overcome by replacing glucose with cellobiose, and the ratio of consumed pentose to consumed hexose increased significantly from 0.096 to 0.461 by mass. An outstanding product concentration of 65.2 g L-1 and productivity of 13.03 g L-1 h-1 were achieved with 50 g L-1 cellobiose and 30 g L-1 xylose at an optimized dilution rate of 0.2 h-1, and the cell retention time gradually increased. Among the total lactic acid production, xylose contributed to more than 34% of the mixed sugars, which was close to the related contents in agricultural residuals. The model successfully simulated the transition of sugar consumption, cell growth, and lactic acid production among the batch, continuous process, and CF/CR systems. CONCLUSION Cell retention time played a critical role in balancing pentose and hexose consumption, cell decay, and lactic acid production in the CF/CR process. With increasing cell concentration, consumption of mixed sugars increased with the productivity of the final product; hence, the impact of substrate inhibition was reduced. With the validated parameters, the model showed the highest accuracy simulating the CF/CR process, and significantly longer cell retention times compared to hydraulic retention time were tested.
Collapse
Affiliation(s)
- Ying Wang
- Department of Biological Science, College of Life Sciences, Sichuan Normal University, Chengdu, 610101 Sichuan China
- Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Ka-Lai Chan
- Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Mohamed Ali Abdel-Rahman
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka, Nishi‐ku, Fukuoka, Japan
- Botany and Microbiology Department, Faculty of Science (Boys), Al-Azhar University, PN:11884, Nasr City, Cairo, Egypt
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka, Nishi‐ku, Fukuoka, Japan
| | - Shao-Yuan Leu
- Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
| |
Collapse
|
11
|
Fujinami D, Motomura H, Oshima H, Mahin AA, Elsayed KM, Zendo T, Sugita Y, Sonomoto K, Kohda D. Mosaic Cooperativity in Slow Polypeptide Topological Isomerization Revealed by Residue-Specific NMR Thermodynamic Analysis. J Phys Chem Lett 2020; 11:1934-1939. [PMID: 32067463 DOI: 10.1021/acs.jpclett.9b03591] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Slow polypeptide conformational changes on time scales of >1 s are generally assumed to be highly cooperative two-state transitions, reflecting the high energy barrier. However, few experimental characterizations have tested the validity of this assumption. We performed residue-specific NMR thermodynamic analysis of the 27-residue lantibiotic peptide, nukacin ISK-1, to characterize the isomerization between two topological states on the second time scale. Unexpectedly, the thermal transition behaviors were distinct among peptide regions, indicating that the topological isomerization process is a mosaic of different degrees of cooperativity. The conformational change path between the two NMR structures was deduced by a targeted molecular dynamics simulation. The unique side-chain threading motions through the monosulfide rings are the structural basis of the high energy barrier, and the nonlocal interactions in the hydrophobic core are the structural basis of the cooperativity. Taken together, we provide an energetic description of the topological isomerization of nukacin ISK-1.
Collapse
Affiliation(s)
- Daisuke Fujinami
- Division of Structural Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Hajime Motomura
- Division of Structural Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Hiraku Oshima
- Laboratory for Biomolecular Function Simulation, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
| | - Abdullah-Al Mahin
- Laboratory of Microbial Technology, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 819-0395, Japan
| | - Khaled M Elsayed
- Laboratory of Microbial Technology, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 819-0395, Japan
| | - Takeshi Zendo
- Laboratory of Microbial Technology, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 819-0395, Japan
| | - Yuji Sugita
- Laboratory for Biomolecular Function Simulation, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan
- Theoretical Molecular Science Laboratory, RIKEN Cluster for Pioneering Research, Saitama 351-0198, Japan
- Computational Biophysics Research Team, RIKEN Center for Computational Science, Kobe 650-0047, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 819-0395, Japan
| | - Daisuke Kohda
- Division of Structural Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| |
Collapse
|
12
|
Abdel-Rahman MA, Tan J, Tashiro Y, Zendo T, Sakai K, Sonomoto K. Non-carbon loss long-term continuous lactic acid production from mixed sugars using thermophilic Enterococcus faecium QU 50. Biotechnol Bioeng 2020; 117:1673-1683. [PMID: 32086810 DOI: 10.1002/bit.27313] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/05/2020] [Accepted: 02/21/2020] [Indexed: 01/25/2023]
Abstract
In this study, a non-sterile (open) continuous fermentation (OCF) process with no-carbon loss was developed to improve lactic acid (LA) productivity and operational stability from the co-utilization of lignocellulose-derived sugars by thermophilic Enterococcus faecium QU 50. The effects of different sugar mixtures on LA production were firstly investigated in conventional OCF at 50°C, pH 6.5 and a dilution rate of 0.20 hr-1 . The xylose consumption ratio was greatly lower than that of glucose in fermentations with glucose/xylose mixtures, indicating apparent carbon catabolite repression (CCR). However, CCR could be efficiently eliminated by feeding solutions containing the cellobiose/xylose mixture. In OCF at a dilution rate ca. 0.10 hr-1 , strain QU 50 produced 42.6 g L-1 of l-LA with a yield of 0.912 g g-1 -consumed sugars, LA yield of 0.655 g g-1 based on mixed sugar-loaded, and a productivity of 4.31 g L-1 hr-1 from simulated energy cane hydrolyzate. In OCF with high cell density by cell recycling, simultaneous and complete co-utilization of sugars was achieved with stable LA production at 60.1 ± 3.25 g L-1 with LA yield of 0.944 g g-1 -consumed sugar and LA productivity of 6.49 ± 0.357 g L-1 hr-1 . Besides this, a dramatic increase in LA yield of 0.927 g g-1 based on mixed sugar-loaded with prolonged operational stability for at least 500 hr (>20 days) was established. This robust system demonstrates an initial green step with a no-carbon loss under energy-saving toward the feasibility of sustainable LA production from lignocellulosic sugars.
Collapse
Affiliation(s)
- Mohamed Ali Abdel-Rahman
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan.,Botany and Microbiology Department, Faculty of Science for Boys, Al-Azhar University, Nasr city, Cairo, Egypt
| | - Jiaming Tan
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan
| | - Yukihiro Tashiro
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan.,Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka, Japan
| | - Takeshi Zendo
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan
| | - Kenji Sakai
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan.,Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan
| |
Collapse
|
13
|
Fujiwara M, Kuwahara D, Hayashi M, Zendo T, Sato M, Nakayama J, Sonomoto K. Lowering effect of viable Pediococcus pentosaceus QU 19 on the rise in postprandial glucose. Biosci Microbiota Food Health 2020; 39:57-64. [PMID: 32328401 PMCID: PMC7162691 DOI: 10.12938/bmfh.19-041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 12/31/2019] [Indexed: 01/31/2023]
Abstract
In the present study, we investigated the glucose-decreasing action of lactic acid bacteria (LAB). The finding of this study could be helpful for people in controlling their blood sugar
levels. The LAB candidate was isolated from a Japanese fermented food and identified as Pediococcus pentosaceus by an analysis of its genome sequence. Postprandial blood
glucose elevation was investigated using oral starch tolerance tests in mice. Normal mice were fed starch and lyophilized cells of P. pentosaceus QU 19 at the same time.
Even without pre-administration of P. pentosaceus QU 19, elevation of the blood glucose level was significantly suppressed by the intake of P. pentosaceus
QU 19 at the same time as oral administration of starch. According to the results for its survival in simulated digestive juice and the reduction of blood glucose level in mice, P.
pentosaceus QU 19 has potential hypoglycemic activity. In vitro measurements revealed that the glucose-decreasing action of P. pentosaceus QU 19
is probably caused by the glucose assimilation of the strain, not the inhibition of carbohydrate-splitting enzymes which has been reported for other LABs previously. These findings indicate
that specific strains of LAB, especially P. pentosaceus QU 19, and foods fermented by LAB may be beneficial for people who must manage glucose ingestion.
Collapse
Affiliation(s)
- Miki Fujiwara
- Biotechnology R&D Group, HPM Research & Development Department, High Performance Materials Company, JXTG Nippon Oil & Energy Corporation, 8 Chidoricho, Naka-ku, Yokohama 231-0815, Japan.,Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Daichi Kuwahara
- Biotechnology R&D Group, HPM Research & Development Department, High Performance Materials Company, JXTG Nippon Oil & Energy Corporation, 8 Chidoricho, Naka-ku, Yokohama 231-0815, Japan
| | - Masahiro Hayashi
- Biotechnology R&D Group, HPM Research & Development Department, High Performance Materials Company, JXTG Nippon Oil & Energy Corporation, 8 Chidoricho, Naka-ku, Yokohama 231-0815, Japan
| | - Takeshi Zendo
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Masao Sato
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Jiro Nakayama
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kenji Sonomoto
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| |
Collapse
|
14
|
Zhao T, Tashiro Y, Sonomoto K. Smart fermentation engineering for butanol production: designed biomass and consolidated bioprocessing systems. Appl Microbiol Biotechnol 2019; 103:9359-9371. [PMID: 31720773 DOI: 10.1007/s00253-019-10198-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 10/08/2019] [Accepted: 10/15/2019] [Indexed: 12/18/2022]
Abstract
There is a renewed interest in acetone-butanol-ethanol (ABE) fermentation from renewable substrates for the sustainable and environment-friendly production of biofuel and platform chemicals. However, the ABE fermentation is associated with several challenges due to the presence of heterogeneous components in the renewable substrates and the intrinsic characteristics of ABE fermentation process. Hence, there is a need to select optimal substrates and modify their characteristics suitable for the ABE fermentation process or microbial strain. This "designed biomass" can be used to establish the consolidated bioprocessing systems. As there are very few reports on designed biomass, the main objectives of this review are to summarize the main challenges associated with ABE fermentation from renewable substrates and to introduce feasible strategies for designing the substrates through pretreatment and hydrolysis technologies as well as through the establishment of consolidated bioprocessing systems. This review offers new insights on improving the efficiency of ABE fermentation from designed renewable substrates.
Collapse
Affiliation(s)
- Tao Zhao
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.,Energy-rich Compounds Production by Photosynthetic Carbon Fixation Research Center, College of Life Science, Qingdao Agricultural University, No. 700 Changcheng Road, Chengyang District, Qingdao, 266109, China
| | - Yukihiro Tashiro
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.,Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
| |
Collapse
|
15
|
Fukao M, Zendo T, Inoue T, Fuke N, Moriuchi T, Yamane Y, Nakayama J, Sonomoto K, Fukaya T. Relation between cell-bound exopolysaccharide production via plasmid-encoded genes and rugose colony morphology in the probiotic Lactobacillus brevis KB290. Anim Sci J 2019; 90:1575-1580. [PMID: 31593351 DOI: 10.1111/asj.13297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/11/2019] [Accepted: 09/02/2019] [Indexed: 11/27/2022]
Abstract
The probiotic Lactobacillus brevis KB290 is a natural producer of cell-bound exopolysaccharide (EPS), and the plasmid-encoded glycosyltransferase genes are responsible for this EPS production. KB290 forms unique rugose colonies inside an agar medium; this characteristic is useful for detecting and enumerating KB290 in the gut or feces. However, the genetic elements associated with this morphology remain unclear. Here, we aimed to investigate the relation between the plasmid eps genes and rugose colony morphology in KB290. The plasmid-cured mutants formed smooth colonies, and the rugose colony morphology was restored after complementation with the eps genes. The eps genes were successfully cloned and expressed in other L. brevis and L. plantarum strains. In these transformant strains, the presence of the EPS, consisting of glucose and N-acetylglucosamine, correlated with rugose colonies, indicating that EPS is responsible for rugose colony formation. To the best of our knowledge, this is the first report identifying the genetic factors influencing rugose colonies in Lactobacillus strains. This rugose colony formation may serve as a useful selective marker for KB290 in routine laboratory and research settings and can be used to detect the spontaneous loss of plasmids in this strain.
Collapse
Affiliation(s)
- Masanori Fukao
- Innovation Division, KAGOME Co., Ltd., Nasushiobara, Tochigi, Japan
| | - Takeshi Zendo
- Laboratory of Microbial Technology, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Takuro Inoue
- Innovation Division, KAGOME Co., Ltd., Nasushiobara, Tochigi, Japan
| | - Nobuo Fuke
- Innovation Division, KAGOME Co., Ltd., Nasushiobara, Tochigi, Japan
| | - Tomoo Moriuchi
- Innovation Division, KAGOME Co., Ltd., Nasushiobara, Tochigi, Japan
| | - Yasuhiro Yamane
- Innovation Division, KAGOME Co., Ltd., Nasushiobara, Tochigi, Japan
| | - Jiro Nakayama
- Laboratory of Microbial Technology, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Tetsuya Fukaya
- Innovation Division, KAGOME Co., Ltd., Nasushiobara, Tochigi, Japan
| |
Collapse
|
16
|
Fukao M, Zendo T, Inoue T, Nakayama J, Suzuki S, Fukaya T, Yajima N, Sonomoto K. Plasmid-encoded glycosyltransferase operon is responsible for exopolysaccharide production, cell aggregation, and bile resistance in a probiotic strain, Lactobacillus brevis KB290. J Biosci Bioeng 2019; 128:391-397. [DOI: 10.1016/j.jbiosc.2019.04.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/04/2019] [Accepted: 04/10/2019] [Indexed: 12/26/2022]
|
17
|
Tanaka M, Sanefuji M, Morokuma S, Yoden M, Momoda R, Sonomoto K, Ogawa M, Kato K, Nakayama J. The association between gut microbiota development and maturation of intestinal bile acid metabolism in the first 3 y of healthy Japanese infants. Gut Microbes 2019; 11:205-216. [PMID: 31550982 PMCID: PMC7053967 DOI: 10.1080/19490976.2019.1650997] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The gut microbial community greatly changes in early life, influencing infant health and subsequent host physiology, notably through its collective metabolism, including host-microbiota interplay of bile acid (BA) metabolism. However, little is known regarding how the development of the intestinal microbial community is associated with maturation of intestinal BA metabolism. To address this, we monitored the succession of gut bacterial community and its association with fecal BA profile in the first 3 y of ten healthy Japanese infants. The BA profiles were classified into four types, defined by high content of conjugated primary BA (Con type), unconjugated primary BA (chenodeoxycholic acid and cholic acid) (Pri type), ursodeoxycholic acid (Urs type), and deoxycholic and lithocholic acid (Sec type). Most subjects begun with Con type or Pri type profiles during lactation and eventually transited to Sec type through Urs type after the start of solid food intake. Con type and Pri type were associated with Enterobacteriaceae-dominant microbiota corresponding to the neonatal type or Bifidobacterium-dominant microbiota corresponding to lactation type, respectively. Urs type subjects were strongly associated with Ruminococcus gnavus colonization, mostly occurring between Pri type and Sec type. Sec type was associated with adult-type complex microbiota dominated by a variety of Firmicutes and Bacteroidetes species. Addressing the link of the common developmental passage of intestinal BA metabolism with infant's health and subsequent host physiology requires further study.
Collapse
Affiliation(s)
- Masaru Tanaka
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Masafumi Sanefuji
- Research Center for Environment and Developmental Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Seiichi Morokuma
- Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Misako Yoden
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Rie Momoda
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Masanobu Ogawa
- Research Center for Environment and Developmental Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kiyoko Kato
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Jiro Nakayama
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan,CONTACT Jiro Nakayama Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| |
Collapse
|
18
|
Kihara T, Noguchi T, Tashiro Y, Sakai K, Sonomoto K. Highly efficient continuous acetone–butanol–ethanol production from mixed sugars without carbon catabolite repression. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.biteb.2019.03.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
19
|
Nabeta K, Watanabe S, Chibazakura T, Zendo T, Sonomoto K, Shimizu-Kadota M, Yoshikawa H. Constitutive expression of phosphoketolase, a key enzyme for metabolic shift from homo- to heterolactic fermentation in Enterococcus mundtii QU 25. Biosci Microbiota Food Health 2019; 38:111-114. [PMID: 31384523 PMCID: PMC6663511 DOI: 10.12938/bmfh.18-030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/15/2019] [Indexed: 11/05/2022]
Abstract
Phosphoketolase (PK) is responsible for heterolactic fermentation; however, the PK gene of Enterococcus mundtii QU 25, xfpA, is transcribed constitutively, even under homolactic fermentation conditions. In order to deduce the regulatory mechanisms of PK activity in QU 25, XfpA levels in QU 25 cells under hetero- and homolactic fermentation conditions were tested using western blotting. The results showed that the XfpA protein expression was similar under both conditions and that the expression products formed complexes, most likely homodimers, indicating that the regulation of PK activity is downstream of translation.
Collapse
Affiliation(s)
- Keisuke Nabeta
- Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan
| | - Satoru Watanabe
- Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan
| | - Taku Chibazakura
- Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan
| | - Takeshi Zendo
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Mariko Shimizu-Kadota
- Department of Environmental Systems Sciences, Musashino University, 3-3-3 Ariake, Koto-ku, Tokyo 135-8181, Japan.,Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan
| | - Hirofumi Yoshikawa
- Department of Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan.,NODAI Genome Research Center, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan
| |
Collapse
|
20
|
Zhao T, Yasuda K, Tashiro Y, Darmayanti RF, Sakai K, Sonomoto K. Semi-hydrolysate of paper pulp without pretreatment enables a consolidated fermentation system with in situ product recovery for the production of butanol. Bioresour Technol 2019; 278:57-65. [PMID: 30677699 DOI: 10.1016/j.biortech.2019.01.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 01/08/2019] [Accepted: 01/09/2019] [Indexed: 05/12/2023]
Abstract
Utilization of lignocellulosic biomasses for biobutanol fermentation usually requires costly processes of pretreatment and enzymatic hydrolysis. In this study, paper pulp (93.2% glucan) was used as a starting biomass material to produce biobutanol. We conducted enzymatic semi-hydrolysis of paper pulp without pretreatment and with low enzyme loading, which produced high concentrations of cellobiose (13.9 g L-1) and glucose (21.3 g L-1). In addition, efficient fermentation of the semi-hydrolysate was achieved similar to that with the use of commercial sugars without inhibitors. Finally, we designed a novel non-isothermal simultaneous saccharification and fermentation with in situ butanol recovery, which was composed of a repeated semi-hydrolysis process and successive butanol-extractive fermentation process under the respective optimal conditions. The consolidated system improved butanol production, butanol yields, and butanol productivities and enabled repeated use of medium when compared with other integrated hydrolysis and fermentation processes.
Collapse
Affiliation(s)
- Tao Zhao
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kento Yasuda
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yukihiro Tashiro
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan; Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Rizki Fitria Darmayanti
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan; Department of Chemical Engineering, Faculty of Engineering, University of Jember, Jalan Kalimantan, Kampus Tegal Boto, 68121 Jember, Indonesia
| | - Kenji Sakai
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan; Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| |
Collapse
|
21
|
Fujinami D, -Mahin AA, Elsayed KM, Islam MR, Nagao JI, Roy U, Momin S, Zendo T, Kohda D, Sonomoto K. The lantibiotic nukacin ISK-1 exists in an equilibrium between active and inactive lipid-II binding states. Commun Biol 2018; 1:150. [PMID: 30272026 PMCID: PMC6156582 DOI: 10.1038/s42003-018-0150-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 08/17/2018] [Indexed: 11/28/2022] Open
Abstract
The lantibiotic nukacin ISK-1 exerts antimicrobial activity through binding to lipid II. Here, we perform NMR analyses of the structure of nukacin ISK-1 and the interaction with lipid II. Unexpectedly, nukacin ISK-1 exists in two structural states in aqueous solution, with an interconversion rate on a time scale of seconds. The two structures differ in the relative orientations of the two lanthionine rings, ring A and ring C. Chemical shift perturbation induced by the titration of lipid II reveals that only one state was capable of binding to lipid II. On the molecular surface of the active state, a multiple hydrogen-bonding site formed by amino acid residues in the ring A region is adjacent to a hydrophobic surface formed by residues in the ring C region, and we propose that these sites interact with the pyrophosphate moiety and the isoprene chain of the lipid II molecule, respectively. Fujinami et al. show that an antimicrobial peptide Nukacin ISK-1 exists in an equilibrium between two states, only one of which can bind to the ISK-1’s target lipid-II, an important bacterial cell wall precursor. This study provides unexpected insights into the action modes of antibiotics.
Collapse
Affiliation(s)
- Daisuke Fujinami
- Division of Structural Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Abdullah-Al -Mahin
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Laboratory of Microbial Technology, Kyushu University, Fukuoka, 812-8581, Japan.,Microbiology and Industrial Irradiation Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Ganakbari, Savar 1207, Dhaka, 1349, Bangladesh
| | - Khaled M Elsayed
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Laboratory of Microbial Technology, Kyushu University, Fukuoka, 812-8581, Japan.,Department of Microbiology, Faculty of Pharmacy, Misr International University, Cairo, 19648, Egypt
| | - Mohammad R Islam
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Laboratory of Microbial Technology, Kyushu University, Fukuoka, 812-8581, Japan.,Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Jun-Ichi Nagao
- Department of Functional Bioscience, Section of Infection Biology, Fukuoka Dental College, Fukuoka, 814-0175, Japan
| | - Urmi Roy
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Laboratory of Microbial Technology, Kyushu University, Fukuoka, 812-8581, Japan
| | - Sabrina Momin
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Laboratory of Microbial Technology, Kyushu University, Fukuoka, 812-8581, Japan
| | - Takeshi Zendo
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Laboratory of Microbial Technology, Kyushu University, Fukuoka, 812-8581, Japan
| | - Daisuke Kohda
- Division of Structural Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan.
| | - Kenji Sonomoto
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Laboratory of Microbial Technology, Kyushu University, Fukuoka, 812-8581, Japan.
| |
Collapse
|
22
|
Tomoyasu T, Tsuruno K, Tanatsugu R, Miyazaki A, Kondo H, Tabata A, Whiley RA, Sonomoto K, Nagamune H. Recognizability of heterologous co-chaperones with Streptococcus intermedius DnaK and Escherichia coli DnaK. Microbiol Immunol 2018; 62:681-693. [PMID: 30239035 DOI: 10.1111/1348-0421.12651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/05/2018] [Accepted: 09/11/2018] [Indexed: 11/27/2022]
Abstract
Streptococcus intermedius DnaK complements the temperature-sensitive phenotype of an Escherichia coli dnaK null mutant only when co-chaperones DnaJ and GrpE are co-expressed. Therefore, whether S. intermedius DnaK and E. coli DnaK can recognize heterologous co-chaperones in vitro was examined. Addition of heterologous GrpE to DnaK and DnaJ partially stimulated adenosine triphosphatase (ATPase) activity, and almost completely stimulated luciferase refolding activity. Addition of heterologous DnaJ to GrpE and DnaK also stimulated ATPase activity; however, significant luciferase refolding activity was not observed. Moreover, E. coli DnaJ had a negative effect on the luciferase refolding activity of the S. intermedius DnaK chaperone system. In E. coli chaperone mutants, with the exception of E. coli DnaJ, stronger expression of the heterologous co-chaperones partially or almost completely complemented the temperature-sensitive-phenotype. These results indicate that all heterologous co-chaperones can at least partially recognize DnaK of a distantly related species. A region of the ATPase domain that is present in the DnaK of gram-negative bacteria is absent from the DnaK of gram-positive bacteria. This region is believed to be important for recognition of co-chaperones from gram-negative bacteria. However, insertion of this segment into S. intermedius DnaK failed to increase its ability to recognize E. coli co-chaperones, implying that this region is unnecessary or insufficient for the recognition of E. coli co-chaperones. Thus, our data suggest that a basic structural similarity is conserved among the components of the S. intermedius and E. coli DnaK chaperone systems, allowing weak associations between heterologous components.
Collapse
Affiliation(s)
- Toshifumi Tomoyasu
- Field of Biomolecular Functions and Technology, Department of Bioscience and Bioindustry, Graduate School of Bioscience and Bioindustry, Tokushima University Graduate School, Minami-josanjima-cho, Tokushima 770-8513, Japan
| | - Keigo Tsuruno
- Faculty of Agriculture, Department of Bioscience and Biotechnology, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Ryosuke Tanatsugu
- Department of Biological Science and Technology, Institute of Technology and Science, Tokushima University Graduate School, Minami-josanjima-cho, Tokushima 770-8506, Japan
| | - Aya Miyazaki
- Faculty of Agriculture, Department of Bioscience and Biotechnology, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Hiroyuki Kondo
- Department of Biological Science and Technology, Institute of Technology and Science, Tokushima University Graduate School, Minami-josanjima-cho, Tokushima 770-8506, Japan
| | - Atsushi Tabata
- Field of Biomolecular Functions and Technology, Department of Bioscience and Bioindustry, Graduate School of Bioscience and Bioindustry, Tokushima University Graduate School, Minami-josanjima-cho, Tokushima 770-8513, Japan
| | - Robert A Whiley
- Centre for Oral Immunobiology and Regenerative Medicine, Institute of Dentistry, Bart's and the London School of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, London E1 2AT, UK
| | - Kenji Sonomoto
- Faculty of Agriculture, Department of Bioscience and Biotechnology, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Hideaki Nagamune
- Field of Biomolecular Functions and Technology, Department of Bioscience and Bioindustry, Graduate School of Bioscience and Bioindustry, Tokushima University Graduate School, Minami-josanjima-cho, Tokushima 770-8513, Japan
| |
Collapse
|
23
|
Perez RH, Zendo T, Sonomoto K. Circular and Leaderless Bacteriocins: Biosynthesis, Mode of Action, Applications, and Prospects. Front Microbiol 2018; 9:2085. [PMID: 30233551 PMCID: PMC6131525 DOI: 10.3389/fmicb.2018.02085] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 08/15/2018] [Indexed: 01/02/2023] Open
Abstract
Bacteriocins are a huge family of ribosomally synthesized peptides known to exhibit a range of bioactivities, most predominantly antibacterial activities. Bacteriocins from lactic acid bacteria are of particular interest due to the latter's association to food fermentation and the general notion of them to be safe. Among the family of bacteriocins, the groups known as circular bacteriocins and leaderless bacteriocins are gaining more attention due to their enormous potential for industrial application. Circular bacteriocins and leaderless bacteriocins, arguably the least understood groups of bacteriocins, possess distinctively peculiar characteristics in their structures and biosynthetic mechanisms. Circular bacteriocins have N-to-C- terminal covalent linkage forming a structurally distinct circular peptide backbone. The circular nature of their structures provides them superior stability against various stresses compared to most linear bacteriocins. The molecular mechanism of their biosynthesis, albeit has remained poorly understood, is believed to possesses huge application prospect as it can serve as scaffold in bioengineering other biologically important peptides. On the other hand, while most bacteriocins are synthesized as inactive precursor peptides, which possess an N-terminal leader peptide attached to a C-terminal propeptide, leaderless bacteriocins are atypical as they do not have an N-terminal leader peptide, hence the name. Leaderless bacteriocins are active right after translation as they do not undergo any post-translational processing common to other groups of bacteriocins. This "simplicity" in the biosynthesis of leaderless bacteriocins offers a huge commercial potential as scale-up production systems are considerably easier to assemble. In this review, we summarize the current studies of both circular and leaderless bacteriocins, highlighting the progress in understanding their biosynthesis, mode of action, application and their prospects.
Collapse
Affiliation(s)
- Rodney H Perez
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan.,National Institute of Molecular Biology and Biotechnology, University of the Philippines Los Baños, Los Baños, Philippines
| | - Takeshi Zendo
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Kenji Sonomoto
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| |
Collapse
|
24
|
Zhao T, Tashiro Y, Zheng J, Sakai K, Sonomoto K. Semi-hydrolysis with low enzyme loading leads to highly effective butanol fermentation. Bioresour Technol 2018; 264:335-342. [PMID: 29886308 DOI: 10.1016/j.biortech.2018.05.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 06/08/2023]
Abstract
To improve butanol fermentation efficiencies, semi-hydrolysate with low enzyme loading using H2SO4 pretreated rice straw was designed, which preferably produced cellobiose with xylose (instead of glucose). Fermentation of semi-hydrolysates avoided carbon catabolite repression (CCR) and produced higher butanol yield to enzyme loading (0.0290 g U-1), a newly proposed parameter, than the conventional glucose-oriented hydrolysate (0.00197 g U-1). Further, overall butanol productivity was improved from 0.0628 g L-1 h-1 to 0.265 g L-1 h-1 during fermentation of undetoxified semi-hydrolysate by using high cell density. A novel simultaneously repeated hydrolysis and fermentation (SRHF) was constructed by recycling of enzymes and cells, which further improved butanol yield to enzyme loading by 183% and overall butanol productivity by 6.04%. Thus, semi-hydrolysate with SRHF is a smartly designed biomass for efficient butanol fermentation of lignocellulosic materials.
Collapse
Affiliation(s)
- Tao Zhao
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Yukihiro Tashiro
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Jin Zheng
- State Key Lab of Petroleum Pollution Control, Beijing 102206, China; Research Division of Environment Technology, CNPC Research Institute of Safety & Environmental Technology, Beijing 102206, China
| | - Kenji Sakai
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| |
Collapse
|
25
|
Daba GM, Ishibashi N, Gong X, Taki H, Yamashiro K, Lim YY, Zendo T, Sonomoto K. Characterisation of the action mechanism of a Lactococcus-specific bacteriocin, lactococcin Z. J Biosci Bioeng 2018; 126:603-610. [PMID: 29929768 DOI: 10.1016/j.jbiosc.2018.05.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 05/14/2018] [Accepted: 05/24/2018] [Indexed: 11/25/2022]
Abstract
Lactococcin Z is a novel Lactococcus-specific bacteriocin produced by Lactococcus lactis QU 7 that shares 55.6% identity with lactococcin A. To identify the receptor targeted by lactococcin Z, several lactococcin Z-resistant mutants were generated from the sensitive strain, L. lactis IL1403. The resistant mutants showed difficulties in utilising mannose and glucose as sole carbon sources, contrary to their pattern of growth in the presence of galactose as a sole carbon source. Mutations were found in the ptnC and ptnD genes of lactococcin Z-resistant mutants, which encode the mannose phosphotransferase system (Man-PTS) components, IIC and IID, respectively; therefore, IIC and IID are proposed as potential receptors employed by lactococcin Z and are the same receptors targeted by lactococcin A. Both lactococcins A and Z share a high percentage identity in their N-termini regions in contrast to their C-termini that show less similarity; this may explain the difference in their action mechanisms as well as the lack of cross-immunity between them. Although lactococcin Z showed bactericidal activity, it neither dissipated membrane potential nor formed pores on the membranes of sensitive cells, in sharp contrast to the pore-forming lactococcin A.
Collapse
Affiliation(s)
- Ghoson Mosbah Daba
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| | - Naoki Ishibashi
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| | - Xiao Gong
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| | - Hiroya Taki
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| | - Keisuke Yamashiro
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| | - Yen Yi Lim
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| | - Takeshi Zendo
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| |
Collapse
|
26
|
Sushida H, Ishibashi N, Zendo T, Wilaipun P, Leelawatcharamas V, Nakayama J, Sonomoto K. Evaluation of leader peptides that affect the secretory ability of a multiple bacteriocin transporter, EnkT. J Biosci Bioeng 2018; 126:23-29. [DOI: 10.1016/j.jbiosc.2018.01.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 01/11/2018] [Accepted: 01/19/2018] [Indexed: 11/24/2022]
|
27
|
Kisuse J, La-ongkham O, Nakphaichit M, Therdtatha P, Momoda R, Tanaka M, Fukuda S, Popluechai S, Kespechara K, Sonomoto K, Lee YK, Nitisinprasert S, Nakayama J. Urban Diets Linked to Gut Microbiome and Metabolome Alterations in Children: A Comparative Cross-Sectional Study in Thailand. Front Microbiol 2018; 9:1345. [PMID: 29988433 PMCID: PMC6024022 DOI: 10.3389/fmicb.2018.01345] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 05/31/2018] [Indexed: 01/06/2023] Open
Abstract
Loss of traditional diets by food globalization may have adverse impact on the health of human being through the alteration of gut microbial ecosystem. To address this notion, we compared the gut microbiota of urban (n = 17) and rural (n = 28) school-aged children in Thailand in association with their dietary habits. Dietary records indicated that children living in urban Bangkok tended to consume modern high-fat diets, whereas children in rural Buriram tended to consume traditional vegetable-based diets. Sequencing of 16S rRNA genes amplified from stool samples showed that children in Bangkok have less Clostridiales and more Bacteroidales and Selenomonadales compared to children in Buriram and bacterial diversity is significantly less in Bangkok children than in Buriram children. In addition, fecal butyrate and propionate levels decreased in Bangkok children in association with changes in their gut microbial communities. Stool samples of these Thai children were classified into five metabolotypes (MTs) based on their metabolome profiles, each characterized by high concentrations of short and middle chain fatty acids (MT1, n = 17), amino acids (MT2, n = 7), arginine (MT3, n = 6), amino acids, and amines (MT5, n = 8), or an overall low level of metabolites (MT4, n = 4). MT1 and MT4 mainly consisted of samples from Buriram, and MT2 and MT3 mainly consisted of samples from Bangkok, whereas MT5 contained three samples from Bangkok and five from Buriram samples. According to the profiles of microbiota and diets, MT1 and MT2 are characteristic of children in Buriram and Bangkok, respectively. Predicted metagenomics indicated the underrepresentation in MT2 of eight genes involved in pathways of butyrate biosynthesis, notably including paths from glutamate as well as pyruvate. Taken together, this study shows the benefit of high-vegetable Thai traditional diets on gut microbiota and suggests that high-fat and less-vegetable urban dietary habits alter gut microbial communities in Thai children, which resulted in the reduction of colonic short chain fatty acid fermentation.
Collapse
Affiliation(s)
- Juma Kisuse
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Orawan La-ongkham
- Institute of Food Research and Product Development, Kasetsart University, Bangkok, Thailand
| | - Massalin Nakphaichit
- Specialized Research Unit: Probiotics and Prebiotics for Health, Faculty of Agro-Industry, Kasetsart University, Bangkok, Thailand
| | - Phatthanaphong Therdtatha
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Rie Momoda
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Masaru Tanaka
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Shinji Fukuda
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Japan
- Intestinal Microbiota Project, Kanagawa Institute of Industrial Science and Technology, Kawasaki, Japan
- Transborder Medical Research Center, University of Tsukuba, Tsukuba, Japan
- PRESTO, Japan Science and Technology Agency, Saitama, Japan
| | - Siam Popluechai
- School of Science, Mae Fah Luang University, Chiang Rai, Thailand
- Human Gut Microbiome for Health Research Unit, Mae Fah Luang University, Chiang Rai, Thailand
| | | | - Kenji Sonomoto
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Yuan-Kun Lee
- Department of Microbiology, National University of Singapore, Singapore, Singapore
| | - Sunee Nitisinprasert
- Specialized Research Unit: Probiotics and Prebiotics for Health, Faculty of Agro-Industry, Kasetsart University, Bangkok, Thailand
| | - Jiro Nakayama
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| |
Collapse
|
28
|
Singhvi M, Zendo T, Gokhale D, Sonomoto K. Greener L-lactic acid production through in situ extractive fermentation by an acid-tolerant Lactobacillus strain. Appl Microbiol Biotechnol 2018; 102:6425-6435. [PMID: 29799089 DOI: 10.1007/s00253-018-9084-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 05/01/2018] [Accepted: 05/08/2018] [Indexed: 10/16/2022]
Abstract
Lactic acid (LA) fermentation requires a neutralizer for a physiologically acceptable range. However, a neutralizer generates a large amount of gypsum, an environmental pollutant. Furthermore, the downstream processing is complicated and expensive, comprising 50-70% of the total cost. We previously developed a Lactobacillus delbrueckii FM1, which can produce undissociated LA without neutralizer. Here, we improved FM1 by adaptive evolution at pH 4.5, which generated Adp FM1 showing an ~ 1.80-fold increase in LA production compared to FM1. The LA production via fed-batch fermentation yielded 36.2 g/L of LA, with a productivity of 0.500 g/L/h. However, cell viability was reduced due to the acidic pH and/or end-product inhibition. Therefore, an in situ LA recovery process using an extractive solvent was employed to maintain cell viability. Adp FM1 produced 49.2 g/L of LA via in situ LA-extractive fed-batch fermentation, which was ~ 1.4-fold higher than that without LA extraction. Adp FM1 provided a total LA productivity of 0.512 g/L/h in 96 h. Among the tested strains, Adp FM1 exhibited the highest H+-ATPase activity and a 415-fold increase in H+-ATPase gene expression compared to the parent strain. These results suggest that the in situ LA extractive fermentation process will ease downstream processing and prove to be a more economical and environmentally friendly option compared to the present fermentation. To our knowledge, this is the first report on the production of undissociated L-LA by Lactobacillus using an in situ recovery process, with high LA production levels and productivity.
Collapse
Affiliation(s)
- Mamata Singhvi
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-Ku, Fukuoka, 812-8581, Japan
| | - Takeshi Zendo
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-Ku, Fukuoka, 812-8581, Japan
| | - Digambar Gokhale
- NCIM Resource Centre, CSIR-National Chemical Laboratory, Pune, India
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-Ku, Fukuoka, 812-8581, Japan.
| |
Collapse
|
29
|
Adachi K, Ohtani K, Kawano M, Singh RP, Yousuf B, Sonomoto K, Shimizu T, Nakayama J. Metabolic dependent and independent pH-drop shuts down VirSR quorum sensing in Clostridium perfringens. J Biosci Bioeng 2018; 125:525-531. [PMID: 29373309 DOI: 10.1016/j.jbiosc.2017.12.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/20/2017] [Accepted: 12/20/2017] [Indexed: 12/20/2022]
Abstract
Clostridium perfringens produces various exotoxins and enzymes that cause food poisoning and gas gangrene. The genes involved in virulence are regulated by the agr-like quorum sensing (QS) system, which consists of a QS signal synthesis system and a VirSR two-component regulatory system (VirSR TCS) which is a global regulatory system composed of signal sensor kinase (VirS) and response regulator (VirR). We found that the perfringolysin O gene (pfoA) was transiently expressed during mid-log phase of bacterial growth; its expression was rapidly shut down thereafter, suggesting the existence of a self-quorum quenching (sQQ) system. The sQQ system was induced by the addition of stationary phase culture supernatant (SPCS). Activity of the sQQ system was heat stable, and was present following filtration through the ultrafiltration membrane, suggesting that small molecules acted as sQQ agents. In addition, sQQ was also induced by pure acetic and butyric acids at concentrations equivalent to those in the stationary phase culture, suggesting that organic acids produced by C. perfringens were involved in sQQ. In pH-controlled batch culture, sQQ was greatly diminished; expression level of pfoA extended to late-log growth phase, and was eventually increased by one order of magnitude. Furthermore, hydrochloric acid induced sQQ at the same pH as was used in organic acids. SPCS also suppressed the expression of genes regulated by VirSR TCS. Overall, the expression of virulence factors of C. perfringens was downregulated by the sQQ system, which was mediated by primary acidic metabolites and acidic environments. This suggested the possibility of pH-controlled anti-virulence strategies.
Collapse
Affiliation(s)
- Keika Adachi
- Laboratory of Microbial Technology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Kaori Ohtani
- Department of Bacteriology, Graduate School of Medical Science, University of Kanazawa, 13-1 Takaramachi, Kanazawa, Ishikawa 920-8203, Japan; Miyarisan Pharmaceutical Co. Ltd., 1-10-3 Kaminakazato, Kita-ku, Tokyo 114-0016, Japan
| | - Michio Kawano
- Laboratory of Microbial Technology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Ravindra Pal Singh
- Laboratory of Microbial Technology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Basit Yousuf
- Laboratory of Microbial Technology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Tohru Shimizu
- Department of Bacteriology, Graduate School of Medical Science, University of Kanazawa, 13-1 Takaramachi, Kanazawa, Ishikawa 920-8203, Japan
| | - Jiro Nakayama
- Laboratory of Microbial Technology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan.
| |
Collapse
|
30
|
Daba G, Ishibashi N, Zendo T, Sonomoto K. Functional analysis of the biosynthetic gene cluster required for immunity and secretion of a novelLactococcus-specific bacteriocin, lactococcin Z. J Appl Microbiol 2017; 123:1124-1132. [DOI: 10.1111/jam.13564] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 07/18/2017] [Accepted: 08/08/2017] [Indexed: 01/11/2023]
Affiliation(s)
- G.M. Daba
- Department of Bioscience and Biotechnology; Faculty of Agriculture; Graduate School; Kyushu University; Fukuoka Japan
| | - N. Ishibashi
- Department of Bioscience and Biotechnology; Faculty of Agriculture; Graduate School; Kyushu University; Fukuoka Japan
| | - T. Zendo
- Department of Bioscience and Biotechnology; Faculty of Agriculture; Graduate School; Kyushu University; Fukuoka Japan
| | - K. Sonomoto
- Department of Bioscience and Biotechnology; Faculty of Agriculture; Graduate School; Kyushu University; Fukuoka Japan
- Department of Functional Metabolic Design; Bio-Architecture Center; Kyushu University; Fukuoka Japan
| |
Collapse
|
31
|
Singhvi M, Zendo T, Iida H, Gokhale D, Sonomoto K. Stimulation of d- and l-lactate dehydrogenases transcriptional levels in presence of diammonium hydrogen phosphate resulting to enhanced lactic acid production by Lactobacillus strain. J Biosci Bioeng 2017; 124:674-679. [PMID: 28800908 DOI: 10.1016/j.jbiosc.2017.07.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/07/2017] [Accepted: 07/11/2017] [Indexed: 11/30/2022]
Abstract
The present study revealed the effect of nitrogen sources on lactic acid production and stimulation of d- and l-lactate dehydrogenases (LDH) of parent Lactobacillus lactis NCIM 2368 and its mutant RM2-24 generated after UV mutagenesis. Both the parent and mutant strains were evaluated for d-lactic acid production in control and modified media. The modified media did not show remarkable effect on lactic acid production in case of parent whereas mutant exhibited significant enhancement in d-lactic acid production along with the appearance of l-lactic acid in the broth. Both LDH activities and specific activities were found to be higher in mutant than the parent strain. These results suggested that the diammonium hydrogen phosphate in modified media triggered the expression of LDH genes leading to enhanced lactic acid production. This observation has been proved by studying the expression levels of d- and l-LDH genes of parent and mutant in control and modified media using quantitative RT-PCR technique. In case of mutant, the transcriptional levels of d-LDH and l-LDH increased ∼17 fold and ∼1.38 fold respectively in modified medium compared to the values obtained with control medium. In case of parent, no significant change in transcriptional levels of d- and l-LDH was found when the cells were grown in either control medium or modified medium. This study suggested that the mutant, RM2-24 has l-LDH gene which is expressed in presence of (NH4)2HPO4 resulting in l-lactic acid production. Co-production of l-lactic acid in d-lactic acid fermentation may be detrimental in the PLA production.
Collapse
Affiliation(s)
- Mamata Singhvi
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-Ku, Fukuoka 812-8581, Japan
| | - Takeshi Zendo
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-Ku, Fukuoka 812-8581, Japan
| | - Hiroshi Iida
- Laboratory of Zoology, Division of Agricultural Bioresource Sciences, Department of Bioresource Sciences, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Digambar Gokhale
- NCIM Resource Centre, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-Ku, Fukuoka 812-8581, Japan.
| |
Collapse
|
32
|
Tanaka M, Korenori Y, Washio M, Kobayashi T, Momoda R, Kiyohara C, Kuroda A, Saito Y, Sonomoto K, Nakayama J. Signatures in the gut microbiota of Japanese infants who developed food allergies in early childhood. FEMS Microbiol Ecol 2017; 93:4067811. [DOI: 10.1093/femsec/fix099] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 08/04/2017] [Indexed: 12/24/2022] Open
Affiliation(s)
- Masaru Tanaka
- Laboratory of Microbial Technology, Division of Applied Molecular Microbiology and Biomass Chemistry, Faculty of Agriculture, Graduate school, Kyushu University, Fukuoka 812-8581, Japan
| | - Yuki Korenori
- Laboratory of Microbial Technology, Division of Applied Molecular Microbiology and Biomass Chemistry, Faculty of Agriculture, Graduate school, Kyushu University, Fukuoka 812-8581, Japan
| | - Masakazu Washio
- Department of Community Health and Clinical Epidemiology, St. Mary's College, Kurume 830-8558, Japan
- St. Mary's Hospital, Kurume 830-8543, Japan
| | - Takako Kobayashi
- Laboratory of Microbial Technology, Division of Applied Molecular Microbiology and Biomass Chemistry, Faculty of Agriculture, Graduate school, Kyushu University, Fukuoka 812-8581, Japan
| | - Rie Momoda
- Laboratory of Microbial Technology, Division of Applied Molecular Microbiology and Biomass Chemistry, Faculty of Agriculture, Graduate school, Kyushu University, Fukuoka 812-8581, Japan
| | - Chikako Kiyohara
- Division of Social Medicine, Department of Preventive Medicine, Graduate School of Medical Science, Kyushu University, Fukuoka 812-8582, Japan
| | - Aki Kuroda
- St. Mary's Hospital, Kurume 830-8543, Japan
| | - Yuka Saito
- St. Mary's Hospital, Kurume 830-8543, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Applied Molecular Microbiology and Biomass Chemistry, Faculty of Agriculture, Graduate school, Kyushu University, Fukuoka 812-8581, Japan
- Department of Functional Metabolic Design, Bio-Architecture Center, Kyushu University, Fukuoka 812-8581, Japan
| | - Jiro Nakayama
- Laboratory of Microbial Technology, Division of Applied Molecular Microbiology and Biomass Chemistry, Faculty of Agriculture, Graduate school, Kyushu University, Fukuoka 812-8581, Japan
| |
Collapse
|
33
|
Kitazaki K, Koga S, Nagatoshi K, Kuwano K, Zendo T, Nakayama J, Sonomoto K, Ano H, Katamoto H. In vitro synergistic activities of cefazolin and nisin A against mastitis pathogens. J Vet Med Sci 2017; 79:1472-1479. [PMID: 28757508 PMCID: PMC5627315 DOI: 10.1292/jvms.17-0180] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
First-generation cephalosporins such as cefazolin (CEZ) have been widely used for mastitis treatment in dairy cattle. However, the use of antibiotics results in the presence of antibiotic residues in milk, which is used for human
consumption. Nisin A, a bacteriocin produced by Lactococcus lactis, has been used as a broad-spectrum food preservative for over 50 years. Therefore, a combination of CEZ and nisin A might provide an extended
activity spectrum against mastitis pathogens and reduce the antibiotic dose for mastitis treatment. This study aimed to evaluate the combined effect of CEZ and nisin A against mastitis pathogens using the checkerboard and
time-kill assays. In the checkerboard assay, the CEZ-nisin A combination exhibited a synergistic effect against Staphylococcus aureus (n=20/20) and Enterococcus faecalis (n=13/18), and meanwhile
exhibited a mostly additive effect against Staphylococcus intermedius (n=12/20), Streptococcus agalactiae (n=10/10), Streptococcus dysgalactiae (n=18/18), and Escherichia
coli (n=14/18). There were no indifferent or antagonistic effects between CEZ and nisin A. In the time-kill assay, the CEZ-nisin A combination at 0.5 × or 1 × minimum inhibitory concentration exhibited synergistic
reduction of bacterial growth by over 3 log10 colony forming units per ml relative to that observed with either antimicrobial substance alone. These results suggest that the CEZ-nisin A combination can
be used for developing an intramammary infusion for mastitis treatment, with lower antibiotic concentrations than normal.
Collapse
Affiliation(s)
- Kohei Kitazaki
- Department of Animal Production, Fukuoka Agriculture and Forestry Research Center, 587 Oaza-Yoshiki, Chikushino, Fukuoka 818-8549, Japan.,Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
| | - Shoko Koga
- Research and Development Division, Omu Milk Products Co., Ltd., 1-38-1 Shinkatsudati-machi, Omuta, Fukuoka 836-0895, Japan
| | - Kohei Nagatoshi
- Research and Development Division, Omu Milk Products Co., Ltd., 1-38-1 Shinkatsudati-machi, Omuta, Fukuoka 836-0895, Japan
| | - Koichi Kuwano
- Division of Microbiology, Department of Infectious Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka 830-0011, Japan
| | - Takeshi Zendo
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Jiro Nakayama
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Hitoshi Ano
- Laboratory of Veterinary Internal Medicine, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen Kibanadai-nishi, Miyazaki 889-2192, Japan
| | - Hiromu Katamoto
- Laboratory of Veterinary Internal Medicine, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen Kibanadai-nishi, Miyazaki 889-2192, Japan
| |
Collapse
|
34
|
Perez RH, Sugino H, Ishibashi N, Zendo T, Wilaipun P, Leelawatcharamas V, Nakayama J, Sonomoto K. Mutations near the cleavage site of enterocin NKR-5-3B prepeptide reveal new insights into its biosynthesis. Microbiology (Reading) 2017; 163:431-441. [DOI: 10.1099/mic.0.000435] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Rodney H Perez
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
- Present address: National Institute for Molecular Biology and Biotechnology (BIOTECH), University of the Philippines Los Baños, Laguna 4031, Philippines
| | - Haruki Sugino
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Naoki Ishibashi
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Takeshi Zendo
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Pongtep Wilaipun
- Department of Fishery Products, Faculty of Fisheries, Kasetsart University, Chatuchak, Bangkok, Thailand
| | - Vichien Leelawatcharamas
- Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
| | - Jiro Nakayama
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
- Laboratory of Functional Food Design, Department of Functional Metabolic Design, Bio-Architecture Center, Kyushu University, Fukuoka 812-8581, Japan
| |
Collapse
|
35
|
Nakayama J, Yamamoto A, Palermo-Conde LA, Higashi K, Sonomoto K, Tan J, Lee YK. Impact of Westernized Diet on Gut Microbiota in Children on Leyte Island. Front Microbiol 2017; 8:197. [PMID: 28261164 PMCID: PMC5306386 DOI: 10.3389/fmicb.2017.00197] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 01/26/2017] [Indexed: 12/25/2022] Open
Abstract
Urbanization has changed life styles of the children in some towns and cities on Leyte island in the Philippines. To evaluate the impact of modernization in dietary habits on gut microbiota, we compared fecal microbiota of 7 to 9-year-old children from rural Baybay city (n = 24) and urban Ormoc city (n = 19), and assessed the correlation between bacterial composition and diet. A dietary survey indicated that Ormoc children consumed fast food frequently and more meat and confectionary than Baybay children, suggesting modernization/westernization of dietary habits. Fat intake accounted for 27.2% of the total energy intake in Ormoc children; this was remarkably higher than in their Baybay counterparts (18.1%) and close to the upper limit (30%) recommended by the World Health Organization. Their fecal microbiota were analyzed by high-throughput 16S rRNA gene sequencing in conjunction with a dataset from five other Asian countries. Their microbiota were classified into two enterotype-like clusters with the other countries' children, each defined by high abundance of either Prevotellaceae (P-type) or Bacteroidaceae (BB-type), respectively. Baybay and Ormoc children mainly harbored P-type and BB-type, respectively. Redundancy analysis showed that P-type favored carbohydrates whereas BB-type preferred fats. Fat intake correlated positively with the Firmicutes-to-Bacteroidetes (F/B) ratio and negatively with the relative abundance of the family Prevotellaceae/genus Prevotella. A species-level analysis suggested that dietary fat positively correlated with an Oscillibacter species as well as a series of Bacteroides/Parabacteroides species, whereas dietary carbohydrate positively correlated with Dialister succinatiphilus known as succinate-utilizing bacteria and some succinate-producing species of family Prevotellaceae, Veillonellaceae, and Erysipelotrichaceae. We also found that a Succinivibrio species was overrepresented in the P-type community, suggesting the syntroph via hydrogen and succinate. Predicted metagenomics suggests that BB-type microbiota is well nourished and metabolically more active with simple sugars, amino acids, and lipids, while P-type community is more involved in digestion of complex carbohydrates. Overweight and obese children living in Ormoc, who consumed a high-fat diet, harbored microbiota with higher F/B ratio and low abundance of Prevotella. The altered gut microbiota may be a sign of a modern diet-associated obesity among children in developing areas.
Collapse
Affiliation(s)
- Jiro Nakayama
- Laboratory of Microbial Technology, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University Fukuoka, Japan
| | - Azusa Yamamoto
- Laboratory of Microbial Technology, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University Fukuoka, Japan
| | | | - Kanako Higashi
- Laboratory of Microbial Technology, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University Fukuoka, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University Fukuoka, Japan
| | - Julie Tan
- PhilRootcrops, Visayas State University Baybay, Philippines
| | - Yuan-Kun Lee
- Department of Microbiology, National University of Singapore Singapore, Singapore
| |
Collapse
|
36
|
Tan J, Abdel-Rahman MA, Numaguchi M, Tashiro Y, Zendo T, Sakai K, Sonomoto K. Thermophilic Enterococcus faecium QU 50 enabled open repeated batch fermentation for l-lactic acid production from mixed sugars without carbon catabolite repression. RSC Adv 2017. [DOI: 10.1039/c7ra03176a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Thermophilic lactic acid bacterium enabled homo-l-lactic acid fermentation from hexose/pentose without carbon catabolite repression, and open repeated production by immobilization.
Collapse
Affiliation(s)
- J. Tan
- Laboratory of Microbial Technology
- Division of Systems Bioengineering
- Department of Bioscience and Biotechnology
- Faculty of Agriculture
- Graduate School
| | - M. A. Abdel-Rahman
- Laboratory of Microbial Technology
- Division of Systems Bioengineering
- Department of Bioscience and Biotechnology
- Faculty of Agriculture
- Graduate School
| | - M. Numaguchi
- Laboratory of Microbial Technology
- Division of Systems Bioengineering
- Department of Bioscience and Biotechnology
- Faculty of Agriculture
- Graduate School
| | - Y. Tashiro
- Laboratory of Soil and Environmental Microbiology
- Division of Systems Bioengineering
- Department of Bioscience and Biotechnology
- Faculty of Agriculture
- Graduate School
| | - T. Zendo
- Laboratory of Microbial Technology
- Division of Systems Bioengineering
- Department of Bioscience and Biotechnology
- Faculty of Agriculture
- Graduate School
| | - K. Sakai
- Laboratory of Soil and Environmental Microbiology
- Division of Systems Bioengineering
- Department of Bioscience and Biotechnology
- Faculty of Agriculture
- Graduate School
| | - K. Sonomoto
- Laboratory of Microbial Technology
- Division of Systems Bioengineering
- Department of Bioscience and Biotechnology
- Faculty of Agriculture
- Graduate School
| |
Collapse
|
37
|
Masuda Y, Perez RH, Zendo T, Sonomoto K. Nutrition-adaptive control of multiple-bacteriocin production by Weissella hellenica QU 13. J Appl Microbiol 2016; 120:70-9. [PMID: 26538298 DOI: 10.1111/jam.12997] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 10/23/2015] [Accepted: 10/30/2015] [Indexed: 01/01/2023]
Abstract
AIM To analyse nutrition-adaptive multiple-bacteriocin production by Weissella hellenica QU 13. METHODS AND RESULTS Weissella hellenica QU 13 produces two leaderless bacteriocins, weissellicins Y and M. Their production was studied in MRS and APT media by quantification analyses with liquid chromatography mass spectrometry (LC/MS), while transcriptional analysis of biosynthetic genes was performed by real-time reverse transcription (RT)-PCR. Weissellicin Y production was higher in MRS culture than in APT culture, while weissellicin M production was higher in APT culture than in MRS culture. APT medium contains a higher amount of thiamine than MRS medium, to enhance the growth of heterofermentative lactic acid bacteria. Therefore, thiamine addition to MRS culture enhanced the growth of W. hellenica QU 13; consequently, weissellicin Y production was decreased, while weissellicin M production was not affected. Furthermore, real-time RT-PCR analyses indicated that the transcriptional trends of their respective structural genes, welY and welM, were different from each other, and that these two genes' transcriptions responded to nutrition conditions. CONCLUSION Weissella hellenica QU 13 was demonstrated to control weissellicins Y and M production based on nutrition conditions. In addition, differential expression behaviour of weissellicins Y and M indicates that each of them would have separate roles to adapt to different environmental situations. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first report that describes nutrition-adaptive multiple-bacteriocin production, in which thiamine inhibits bacteriocin production while it enhances the growth of the producer strain.
Collapse
Affiliation(s)
- Y Masuda
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - R H Perez
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - T Zendo
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - K Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan.,Laboratory of Functional Food Design, Department of Functional Metabolic Design, Bio-Architecture Center, Kyushu University, Fukuoka, Japan
| |
Collapse
|
38
|
Elsayed KM, Islam MR, Abdullah-Al-Mahin, Nagao JI, Zendo T, Sonomoto K. LiaRS reporter assay: A simple tool to identify lipid II binding moieties in lantibiotic nukacin ISK-1. J Biosci Bioeng 2016; 123:398-401. [PMID: 27856233 DOI: 10.1016/j.jbiosc.2016.10.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 09/08/2016] [Accepted: 10/01/2016] [Indexed: 12/27/2022]
Abstract
Binding to lipid II is an important step in the mode of action of most lantibiotics targeting the bacterial cell wall. We applied the Bacillus subtilis two-component system, LiaRS, that is known to respond to antibiotics interfering with lipid II cycle, in order to evaluate lipid II binding activity of known bacteriocins and also to identify lipid II binding moieties in lantibiotic nukacin ISK-1. Using this method, we confirmed that the methyllanthionine ring in nukacin ISK-1 is crucial for lipid II binding as previously indicated. In this study, we further identified that the three N-terminal lysine residues (K1, K2, and K3) and the glycine (G5) residue in nukacin ISK-1 are also important in lipid II binding.
Collapse
Affiliation(s)
- Khaled M Elsayed
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Mohammad R Islam
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; Department of Biochemistry and Molecular Biology, Faculty of Biological Sciences, University of Dhaka, Dhaka 1000, Bangladesh
| | - Abdullah-Al-Mahin
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; Microbiology and Industrial Irradiation Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Savar, Dhaka 1349, Bangladesh
| | - Jun-Ichi Nagao
- Section of Infection Biology, Department of Functional Bioscience, Fukuoka Dental College, 2-15-1 Tamura, Sawara-ku, Fukuoka 814-0913, Japan
| | - Takeshi Zendo
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| |
Collapse
|
39
|
Abdel-Rahman MA, Sonomoto K. Opportunities to overcome the current limitations and challenges for efficient microbial production of optically pure lactic acid. J Biotechnol 2016; 236:176-92. [DOI: 10.1016/j.jbiotec.2016.08.008] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 08/11/2016] [Indexed: 10/21/2022]
|
40
|
Ma H, Yang J, Jia Y, Wang Q, Ma X, Sonomoto K. Alleviation of harmful effect in stillage reflux in food waste ethanol fermentation based on metabolic and side-product accumulation regulation. Bioresour Technol 2016; 218:463-468. [PMID: 27394991 DOI: 10.1016/j.biortech.2016.06.123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 06/28/2016] [Accepted: 06/29/2016] [Indexed: 06/06/2023]
Abstract
Stillage reflux fermentation in food waste ethanol fermentation could reduce sewage discharge but exert a harmful effect because of side-product accumulation. In this study, regulation methods based on metabolic regulation and side-product alleviation were conducted. Result demonstrated that controlling the proper oxidation-reduction potential value (-150mV to -250mV) could reduce the harmful effect, improve ethanol yield by 21%, and reduce fermentation time by 20%. The methods of adding calcium carbonate to adjust the accumulated lactic acid showed that ethanol yield increased by 17.3%, and fermentation time decreased by 20%. The accumulated glyceal also shows that these two methods can reduce the harmful effect. Fermentation time lasted for seven times without effect, and metabolic regulation had a better effect than side-product regulation.
Collapse
Affiliation(s)
- Hongzhi Ma
- Department of Environmental Engineering, University of Science and Technology Beijing, 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, China.
| | - Jian Yang
- Department of Environmental Engineering, University of Science and Technology Beijing, 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, China
| | - Yan Jia
- Department of Environmental Engineering, University of Science and Technology Beijing, 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, China
| | - Qunhui Wang
- Department of Environmental Engineering, University of Science and Technology Beijing, 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, China
| | - Xiaoyu Ma
- Department of Environmental Engineering, University of Science and Technology Beijing, 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, China
| | - Kenji Sonomoto
- Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| |
Collapse
|
41
|
Iwatani S, Ishibashi N, Flores FP, Zendo T, Nakayama J, Sonomoto K. LnqR, a TetR-family transcriptional regulator, positively regulates lacticin Q production in Lactococcus lactis QU 5. FEMS Microbiol Lett 2016; 363:fnw200. [PMID: 27549303 DOI: 10.1093/femsle/fnw200] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2016] [Indexed: 02/07/2023] Open
Abstract
Lacticin Q is an unmodified leaderless bacteriocin produced by Lactococcus lactis QU 5. It has been revealed that the production and self-immunity of lacticin Q are facilitated by a gene cluster lnqQBCDEF The gene for a putative TetR-family transcriptional regulator, termed lnqR, was found nearby the lnqQBCDEF cluster, but its involvement in lacticin Q biosynthesis remained unknown. In this study, we created an LnqR-overexpressing QU 5 recombinant by using lactococcal constitutive promoter P32 The recombinant QU 5 showed enhanced production of and self-immunity to lacticin Q. RT-PCR analysis has revealed that an overexpression of LnqR increases the amounts of lnqQBCDEF transcripts, and these six genes are transcribed as an operon in a single transcriptional unit. Interestingly, LnqR expression and thus lacticin Q production by L. lactis QU 5 was found temperature dependent, while LnzR, an LnqR-homologue, in L. lactis QU 14 was expressed in a similar but not identical manner to LnqR, resulting in dissimilar bacteriocin productivities by these strains. This report demonstrates LnqR as the first TetR-family transcriptional regulator involved in LAB bacteriocin biosynthesis and that, as an exceptional case of TetR-family regulators, LnqR positively regulates the transcription of these biosynthetic genes.
Collapse
Affiliation(s)
- Shun Iwatani
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Naoki Ishibashi
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Floirendo P Flores
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan Institute of Food Science and Technology, University of the Philippines Los Baños College, Laguna 4031, Philippines
| | - Takeshi Zendo
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Jiro Nakayama
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Kenji Sonomoto
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan Department of Functional Metabolic Design, Bio-Architecture Center, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| |
Collapse
|
42
|
Ishibashi N, Seto H, Koga S, Zendo T, Sonomoto K. Identification of Lactococcus-Specific Bacteriocins Produced by Lactococcal Isolates, and the Discovery of a Novel Bacteriocin, Lactococcin Z. Probiotics Antimicrob Proteins 2016; 7:222-31. [PMID: 26093857 DOI: 10.1007/s12602-015-9196-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Lactic acid bacteria that produce Lactococcus-specific bacteriocins were isolated and identified as Lactococcus lactis from fresh corn or lettuce. Among them, four isolates were identified as lactococcin Q producers. Seven isolates showed antimicrobial activity against a lactococcin Q producer, L. lactis QU 4, as well as against nisin Z and lacticin Q producers belonging to L. lactis. Strain QU 7 was selected as a standard strain and showed no cross-immunity to lactococcin Q or other lactococcal bacteriocins. The bacteriocin produced by strain QU 7 was purified in three chromatographic steps, and its molecular mass was determined to be 5041.35 Da. The amino acid sequence analysis revealed that it is a novel class IId bacteriocin, referred to as lactococcin Z. It consisted of 45 amino acid residues. The lczA gene encoding the prepeptide of lactococcin Z showed homology to lactococcins A, B, and M. Thus, this report demonstrates a new example of Lactococcus-specific bacteriocins.
Collapse
Affiliation(s)
- Naoki Ishibashi
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan
| | | | | | | | | |
Collapse
|
43
|
Yamakami K, Tsumori H, Shimizu Y, Sakurai Y, Nagatoshi K, Sonomoto K. Cationic Lipid Content in Liposome-Encapsulated Nisin Improves Sustainable Bactericidal Activity against Streptococcus mutans. Open Dent J 2016; 10:360-6. [PMID: 27583045 PMCID: PMC4974828 DOI: 10.2174/1874210616021001360] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 05/13/2016] [Accepted: 06/24/2016] [Indexed: 11/22/2022] Open
Abstract
An oral infectious disease, dental caries, is caused by the cariogenic streptococci Streptococcus mutans. The expected preventive efficiency for prophylactics against dental caries is not yet completely observed. Nisin, a bacteriocin, has been demonstrated to be microbicidal against S. mutans, and liposome-encapsulated nisin improves preventive features that may be exploited for human oral health. Here we examined the bactericidal effect of charged lipids on nisin-loaded liposomes against S. mutans and inhibitory efficiency for insoluble glucan synthesis by the streptococci for prevention of dental caries. Cationic liposome, nisin-loaded dipalmitoylphosphatidylcholine/phytosphingosine, exhibited higher bactericidal activities than those of electroneutral liposome and anionic liposome. Bactericidal efficiency of the cationic liposome revealed that the vesicles exhibited sustained inhibition of glucan synthesis and the lowest rate of release of nisin from the vesicles. The optimizing ability of cationic liposome-encapsulated nisin that exploit the sustained preventive features of an anti-streptococcal strategy may improve prevention of dental caries.
Collapse
Affiliation(s)
- Kazuo Yamakami
- Department of Preventive Medicine and Public Health, National Defense Medical College,Tokorozawa, Japan
| | - Hideaki Tsumori
- Department of Chemistry, National Defense Medical College, Tokorozawa, Japan
| | - Yoshitaka Shimizu
- Department of Applied Biochemistry, Tokai University, Hiratsuka, Japan
| | - Yutaka Sakurai
- Department of Preventive Medicine and Public Health, National Defense Medical College,Tokorozawa, Japan
| | | | - Kenji Sonomoto
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| |
Collapse
|
44
|
Ma H, Yang J, Jia Y, Wang Q, Tashiro Y, Sonomoto K. Stillage reflux in food waste ethanol fermentation and its by-product accumulation. Bioresour Technol 2016; 209:254-258. [PMID: 26974357 DOI: 10.1016/j.biortech.2016.02.127] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 02/20/2016] [Accepted: 02/27/2016] [Indexed: 06/05/2023]
Abstract
Raw materials and pollution control are key issues for the ethanol fermentation industry. To address these concerns, food waste was selected as fermentation substrate, and stillage reflux was carried out in this study. Reflux was used seven times during fermentation. Corresponding ethanol and reducing sugar were detected. Accumulation of by-products, such as organic acid, sodium chloride, and glycerol, was investigated. Lactic acid was observed to accumulate up to 120g/L, and sodium chloride reached 0.14mol/L. Other by-products did not accumulate. The first five cycles of reflux increased ethanol concentration, which prolonged fermentation time. Further increases in reflux time negatively influenced ethanol fermentation. Single-factor analysis with lactic acid and sodium chloride demonstrated that both factors affected ethanol fermentation, but lactic acid induced more effects.
Collapse
Affiliation(s)
- Hongzhi Ma
- Department of Environmental Engineering, University of Science and Technology, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, China
| | - Jian Yang
- Department of Environmental Engineering, University of Science and Technology, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, China
| | - Yan Jia
- Department of Environmental Engineering, University of Science and Technology, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, China
| | - Qunhui Wang
- Department of Environmental Engineering, University of Science and Technology, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing, China
| | - Yukihiro Tashiro
- Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Kenji Sonomoto
- Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| |
Collapse
|
45
|
Gao M, Tashiro Y, Wang Q, Sakai K, Sonomoto K. High acetone-butanol-ethanol production in pH-stat co-feeding of acetate and glucose. J Biosci Bioeng 2016; 122:176-82. [PMID: 26928043 DOI: 10.1016/j.jbiosc.2016.01.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 01/05/2016] [Accepted: 01/26/2016] [Indexed: 10/22/2022]
Abstract
We previously reported the metabolic analysis of butanol and acetone production from exogenous acetate by (13)C tracer experiments (Gao et al., RSC Adv., 5, 8486-8495, 2015). To clarify the influence of acetate on acetone-butanol-ethanol (ABE) production, we first performed an enzyme assay in Clostridium saccharoperbutylacetonicum N1-4. Acetate addition was found to drastically increase the activities of key enzymes involved in the acetate uptake (phosphate acetyltransferase and CoA transferase), acetone formation (acetoacetate decarboxylase), and butanol formation (butanol dehydrogenase) pathways. Subsequently, supplementation of acetate during acidogenesis and early solventogenesis resulted in a significant increase in ABE production. To establish an efficient ABE production system using acetate as a co-substrate, several shot strategies were investigated in batch culture. Batch cultures with two substrate shots without pH control produced 14.20 g/L butanol and 23.27 g/L ABE with a maximum specific butanol production rate of 0.26 g/(g h). Furthermore, pH-controlled (at pH 5.5) batch cultures with two substrate shots resulted in not only improved acetate consumption but also a further increase in ABE production. Finally, we obtained 15.13 g/L butanol and 24.37 g/L ABE at the high specific butanol production rate of 0.34 g/(g h) using pH-stat co-feeding method. Thus, in this study, we established a high ABE production system using glucose and acetate as co-substrates in a pH-stat co-feeding system with C. saccharoperbutylacetonicum N1-4.
Collapse
Affiliation(s)
- Ming Gao
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Yukihiro Tashiro
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Qunhui Wang
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Kenji Sakai
- Laboratory of Soil and Environmental Microbiology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; Laboratory of Microbial Environmental Protection, Tropical Microbiology Unit, Center for International Education and Research of Agriculture, Faculty of Agriculture, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; Laboratory of Functional Food Design, Department of Functional Metabolic Design, Bio-Architecture Center, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
| |
Collapse
|
46
|
Perez RH, Ishibashi N, Inoue T, Himeno K, Masuda Y, Sawa N, Zendo T, Wilaipun P, Leelawatcharamas V, Nakayama J, Sonomoto K. Functional Analysis of Genes Involved in the Biosynthesis of Enterocin NKR-5-3B, a Novel Circular Bacteriocin. J Bacteriol 2016; 198:291-300. [PMID: 26503847 PMCID: PMC4751792 DOI: 10.1128/jb.00692-15] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 10/15/2015] [Indexed: 12/29/2022] Open
Abstract
UNLABELLED A putative biosynthetic gene cluster of the enterocin NKR-5-3B (Ent53B), a novel circular bacteriocin, was analyzed by sequencing the flanking regions around enkB, the Ent53B structural gene, using a fosmid library. A region approximately 9 kb in length was obtained, and the enkB1, enkB2, enkB3, and enkB4 genes, encoding putative biosynthetic proteins involved in the production, maturation, and secretion of Ent53B, were identified. We also determined the identity of proteins mediating self-immunity against the effects of Ent53B. Heterologous expression systems in various heterologous hosts, such as Enterococcus faecalis and Lactococcus lactis strains, were successfully established. The production and secretion of the mature Ent53B required the cooperative functions of five genes. Ent53B was produced only by those heterologous hosts that expressed protein products of the enkB, enkB1, enkB2, enkB3, and enkB4 genes. Moreover, self-immunity against the antimicrobial action of Ent53B was conferred by at least two independent mechanisms. Heterologous hosts harboring the intact enkB4 gene and/or a combination of intact enkB1 and enkB3 genes were immune to the inhibitory action of Ent53B. IMPORTANCE In addition to their potential application as food preservatives, circular bacteriocins are now considered possible alternatives to therapeutic antibiotics due to the exceptional stability conferred by their circular structure. The successful practical application of circular bacteriocins will become possible only if the molecular details of their biosynthesis are fully understood. The results of the present study offer a new perspective on the possible mechanism of circular bacteriocin biosynthesis. In addition, since some enterococcal strains are associated with pathogenicity, virulence, and drug resistance, the establishment of the first multigenus host heterologous production of Ent53B has very high practical significance, as it widens the scope of possible Ent53B applications.
Collapse
Affiliation(s)
- Rodney H Perez
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Naoki Ishibashi
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Tomoko Inoue
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Kohei Himeno
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Yoshimitsu Masuda
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Narukiko Sawa
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Takeshi Zendo
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Pongtep Wilaipun
- Department of Fishery Products, Faculty of Fisheries, Kasetsart University, Chatuchak, Bangkok, Thailand
| | - Vichien Leelawatcharamas
- Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, Chatuchak, Bangkok, Thailand
| | - Jiro Nakayama
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Division of Systems Bioengineering, Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka, Japan Laboratory of Functional Food Design, Department of Functional Metabolic Design, Bio-Architecture Center, Kyushu University, Fukuoka, Japan
| |
Collapse
|
47
|
Murakami N, Oba M, Iwamoto M, Tashiro Y, Noguchi T, Bonkohara K, Abdel-Rahman MA, Zendo T, Shimoda M, Sakai K, Sonomoto K. l-Lactic acid production from glycerol coupled with acetic acid metabolism by Enterococcus faecalis without carbon loss. J Biosci Bioeng 2016; 121:89-95. [DOI: 10.1016/j.jbiosc.2015.05.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 04/27/2015] [Accepted: 05/17/2015] [Indexed: 11/27/2022]
|
48
|
Abdel-Rahman MA, Tashiro Y, Zendo T, Sakai K, Sonomoto K. Highly efficient l-lactic acid production from xylose in cell recycle continuous fermentation using Enterococcus mundtii QU 25. RSC Adv 2016. [DOI: 10.1039/c5ra27579b] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
We report an effective cell recycling continuous fermentation of xylose to l-lactic acid with high concentration, productivity, and yield using strain QU 25. pH was found to affect the yield and corn steep liquor as feeding medium enhanced the yield.
Collapse
Affiliation(s)
- Mohamed Ali Abdel-Rahman
- Laboratory of Microbial Technology
- Division of Systems Bioengineering
- Department of Bioscience and Biotechnology
- Faculty of Agriculture
- Graduate School
| | - Yukihiro Tashiro
- Laboratory of Soil and Environmental Microbiology
- Division of Systems Bioengineering
- Department of Bioscience and Biotechnology
- Faculty of Agriculture
- Graduate School
| | - Takeshi Zendo
- Laboratory of Microbial Technology
- Division of Systems Bioengineering
- Department of Bioscience and Biotechnology
- Faculty of Agriculture
- Graduate School
| | - Kenji Sakai
- Laboratory of Soil and Environmental Microbiology
- Division of Systems Bioengineering
- Department of Bioscience and Biotechnology
- Faculty of Agriculture
- Graduate School
| | - Kenji Sonomoto
- Laboratory of Microbial Technology
- Division of Systems Bioengineering
- Department of Bioscience and Biotechnology
- Faculty of Agriculture
- Graduate School
| |
Collapse
|
49
|
Ishibashi N, Shigeri Y, Sonomoto K, Zendo T, Koga S. Molecular characterization of the genes involved in the secretion and immunity of lactococcin Q, a two-peptide bacteriocin produced by Lactococcus lactis QU 4. Microbiology (Reading) 2015; 161:2069-78. [DOI: 10.1099/mic.0.000157] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
50
|
Singh RP, Okubo KI, Ohtani K, Adachi K, Sonomoto K, Nakayama J. Rationale design of quorum-quenching peptides that target the VirSR system of Clostridium perfringens. FEMS Microbiol Lett 2015; 362:fnv188. [PMID: 26443835 DOI: 10.1093/femsle/fnv188] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/02/2015] [Indexed: 11/13/2022] Open
Abstract
In Clostridium perfringens, a 5-membered thiolactone peptide acts as an autoinducing peptide (AIPCp) to activate the VirSR two-component signal transduction system, which in turn controls the expression of genes encoding multiple toxins, including α, θ and κ. To develop anti-pathogenic agents against virulent C. perfringens, quorum-quenching peptides were rationally designed based on the structure-activity relationship (SAR) data on AIPCp. Alanine scanning study of AIPCp suggested that Trp(3) and Phe(4) are involved in receptor binding and activation, respectively. On the basis of the SAR, we designed two quorum-quenching peptides with different modes of action: Z-AIPCp-L2A/T5A (partial agonist) and Z-AIPCp-F4A/T5S (partial antagonist). Both peptides significantly attenuated transcription of θ toxin gene (pfoA) in a virulent strain of C. perfringens with IC50 = 0.32 and 0.72 μM, respectively.
Collapse
Affiliation(s)
- Ravindra Pal Singh
- Laboratory of Microbial Technology, Department of Biochemistry and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Ken-Ichi Okubo
- Laboratory of Microbial Technology, Department of Biochemistry and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Kaori Ohtani
- Department of Bacteriology, University of Kanazawa, 13-1 Takaramachi, Kanazawa, Ishikawa 920-8203, Japan
| | - Keika Adachi
- Laboratory of Microbial Technology, Department of Biochemistry and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| | - Kenji Sonomoto
- Laboratory of Microbial Technology, Department of Biochemistry and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan Laboratory of Functional Food Design, Department of Functional Metabolic Design, Bio-Architecture Center, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Jiro Nakayama
- Laboratory of Microbial Technology, Department of Biochemistry and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, Fukuoka 812-8581, Japan
| |
Collapse
|