1
|
Biener R, Horn T, Komitakis A, Schendel I, König L, Hauenstein A, Ludl A, Speidel A, Schmid S, Weißer J, Broßmann M, Kern S, Kronmüller M, Vierkorn S, Suckow L, Braun A. High-cell-density cultivation of Vibrio natriegens in a low-chloride chemically defined medium. Appl Microbiol Biotechnol 2023; 107:7043-7054. [PMID: 37741940 PMCID: PMC10638117 DOI: 10.1007/s00253-023-12799-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 09/12/2023] [Accepted: 09/14/2023] [Indexed: 09/25/2023]
Abstract
Vibrio natriegens is a halophilic bacterium with the fastest generation time of non-pathogenic bacteria reported so far. It therefore has high potential as a production strain for biotechnological production processes or other applications in biotechnology. Culture media for V. natriegens typically contain high sodium chloride concentrations. The corresponding high chloride concentrations can lead to corrosion processes on metal surfaces in bioreactors. Here we report the development of a low-chloride chemically defined medium for V. natriegens. Sodium chloride was completely replaced by the sodium salts disodium hydrogen phosphate, disodium sulfate, and sodium citrate, while keeping the total concentration of sodium ions constant. The use of citrate prevents the occurrence of precipitates, especially of ammonium magnesium phosphate. With this defined medium, high-cell-density fed-batch cultivations in laboratory-scale bioreactors using exponential feeding yielded biomass concentrations of more than 60 g L-1. KEY POINTS: A defined medium for V. natriegens that only contains traces of chloride was developed Corrosion processes on metal surfaces in industrial bioreactors can thus be prevented High yields of biomass can be achieved in fed-batch cultivation with this medium.
Collapse
Affiliation(s)
- Richard Biener
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany.
| | - Thomas Horn
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Alexander Komitakis
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Ines Schendel
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Leon König
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Anna Hauenstein
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Alina Ludl
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Andrea Speidel
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Svenja Schmid
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Julian Weißer
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Max Broßmann
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Sofia Kern
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Max Kronmüller
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Sonja Vierkorn
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Lennart Suckow
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| | - Arthur Braun
- Faculty of Science, Energy and Building Services, University of Applied Sciences Esslingen, Kanalstraße 33, 73728, Esslingen, Germany
| |
Collapse
|
2
|
Smith AD, Tschirhart T, Compton J, Hennessa TM, VanArsdale E, Wang Z. Rapid, high-titer biosynthesis of melanin using the marine bacterium Vibrio natriegens. Front Bioeng Biotechnol 2023; 11:1239756. [PMID: 37781538 PMCID: PMC10534004 DOI: 10.3389/fbioe.2023.1239756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 08/25/2023] [Indexed: 10/03/2023] Open
Abstract
Melanin is one of the most abundant natural biomolecules on Earth. These macromolecular biopolymers display several unique physical and chemical properties and have garnered interest as biomaterials for various commercial and industrial applications. To this end, extensive research has gone into refining methods for the synthesis and extraction of melanin from natural and recombinant sources. In this study, we developed and refined a procedure using a recombinant microbial system for the biosynthesis of melanin using the tyrosinase enzyme Tyr1 and tyrosine as a substrate. Using the emergent microbial chassis organisms Vibrio natriegens, we achieved maximal yields of 7.57 g/L, and one of the highest reported volumetric productivities of 473 mg L-1 h-1 with 100% conversion rates in an optimized, minimally defined medium. Additionally, we identified and investigated the use of a native copper responsive promoter in V. natriegens for stringent regulation of heterologous protein expression as a cost effective alternative to traditional IPTG-based induction. This research represents a promising advancement towards a green, rapid, and economical alternative for the biomanufacture of melanin.
Collapse
Affiliation(s)
- Aaron D. Smith
- United States Naval Research Laboratory, Center for Bio/Molecular Science and Engineering, Washington, DC, United States
- College of Science, George Mason University, Fairfax, VA, United States
| | - Tanya Tschirhart
- United States Naval Research Laboratory, Center for Bio/Molecular Science and Engineering, Washington, DC, United States
| | - Jaimee Compton
- United States Naval Research Laboratory, Center for Bio/Molecular Science and Engineering, Washington, DC, United States
| | - Tiffany M. Hennessa
- American Society for Engineering Education Postdoctoral Research Associate, United States Naval Research Laboratory, Washington, DC, United States
| | - Eric VanArsdale
- National Research Council Postdoctoral Research Associate, United States Naval Research Laboratory, Washington, DC, United States
| | - Zheng Wang
- United States Naval Research Laboratory, Center for Bio/Molecular Science and Engineering, Washington, DC, United States
| |
Collapse
|
3
|
Wu F, Wang S, Peng Y, Guo Y, Wang Q. Metabolic engineering of fast-growing Vibrio natriegens for efficient pyruvate production. Microb Cell Fact 2023; 22:172. [PMID: 37667234 PMCID: PMC10476420 DOI: 10.1186/s12934-023-02185-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 08/20/2023] [Indexed: 09/06/2023] Open
Abstract
BACKGROUND Pyruvate is a widely used value-added chemical which also serves as a hub of various metabolic pathways. The fastest-growing bacterium Vibrio natriegens is a promising chassis for synthetic biology applications with high substrate uptake rates. The aim of this study was to investigate if the high substrate uptake rates of V. natriegens enable pyruvate production at high productivities. RESULTS Two prophage gene clusters and several essential genes for the biosynthesis of byproducts were first deleted. In order to promote pyruvate accumulation, the key gene aceE encoding pyruvate dehydrogenase complex E1 component was down-regulated to reduce the carbon flux into the tricarboxylic acid cycle. Afterwards, the expression of ppc gene encoding phosphoenolpyruvate carboxylase was fine-tuned to balance the cell growth and pyruvate synthesis. The resulting strain PYR32 was able to produce 54.22 g/L pyruvate from glucose within 16 h, with a yield of 1.17 mol/mol and an average productivity of 3.39 g/L/h. In addition, this strain was also able to efficiently convert sucrose or gluconate into pyruvate at high titers. CONCLUSION A novel strain of V. natriegens was engineered which was capable to provide higher productivity in pyruvate synthesis. This study lays the foundation for the biosynthesis of pyruvate and its derivatives in fast-growing V. natriegens.
Collapse
Affiliation(s)
- Fengli Wu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China.
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China.
| | - Shucai Wang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
- College of Biotechnology, Tianjin University of Science & Technology, Tianjin, 300457, China
| | - Yanfeng Peng
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
| | - Yufeng Guo
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China
| | - Qinhong Wang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China.
- National Center of Technology Innovation for Synthetic Biology, Tianjin, 300308, China.
| |
Collapse
|
4
|
Biosensor-based isolation of amino acid-producing Vibrio natriegens strains. Metab Eng Commun 2021; 13:e00187. [PMID: 34824977 PMCID: PMC8605253 DOI: 10.1016/j.mec.2021.e00187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 10/19/2021] [Accepted: 11/07/2021] [Indexed: 12/28/2022] Open
Abstract
The marine bacterium Vibrio natriegens has recently been demonstrated to be a promising new host for molecular biology and next generation bioprocesses. V. natriegens is a Gram-negative, non-pathogenic slight-halophilic bacterium, with a high nutrient versatility and a reported doubling time of under 10 min. However, V. natriegens is not an established model organism yet, and further research is required to promote its transformation into a microbial workhorse. In this work, the potential of V. natriegens as an amino acid producer was investigated. First, the transcription factor-based biosensor LysG, from Corynebacterium glutamicum, was adapted for expression in V. natriegens to facilitate the detection of positively charged amino acids. A set of different biosensor variants were constructed and characterized, using the expression of a fluorescent protein as sensor output. After random mutagenesis, one of the LysG-based sensors was used to screen for amino acid producer strains. Here, fluorescence-activated cell sorting enabled the selective sorting of highly fluorescent cells, i.e. potential producer cells. Using this approach, individual L-lysine, L-arginine and L-histidine producers could be obtained producing up to 1 mM of the effector amino acid, extracellularly. Genome sequencing of the producer strains provided insight into the amino acid production metabolism of V. natriegens. This work demonstrates the successful expression and application of transcription factor-based biosensors in V. natriegens and provides insight into the underlying physiology, forming a solid basis for further development of this promising microbe. Vibrio natriegens is a promising new host for biotechnology. Transcription factor-based biosensors were expressed in V. natriegens. Mutagenesis and screening using FACS provided amino acid producing mutants. Genome sequencing revealed several causal mutations leading to amino acid production. These results will support further efforts to develop V. natriegens as a production host.
Collapse
|
5
|
Xu J, Yang S, Yang L. Vibrio natriegens as a host for rapid biotechnology. Trends Biotechnol 2021; 40:381-384. [PMID: 34794836 DOI: 10.1016/j.tibtech.2021.10.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/13/2021] [Accepted: 10/13/2021] [Indexed: 12/20/2022]
Abstract
Vibrio natriegens is a Gram-negative marine bacterium with an exceptionally fast growth rate and a doubling time of less than 10 min. Its high substrate uptake rates and metabolic prowess make it a promising next-generation workhorse for rapid molecular biology, protein expression, and metabolic engineering.
Collapse
Affiliation(s)
- Jiaqi Xu
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
| | - Sheng Yang
- CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China.
| | - Lirong Yang
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China; Institute of Bioengineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
| |
Collapse
|