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Christophe G, Hou X, Petit E, Traikia M, Le Cerf D, Rihouey C, Gardarin C, Delattre C, Michaud P, Pierre G, Dubessay P. Description of the Wild Strain Rhizobium rosettiformans DSM26376, Reclassified under Peteryoungia rosettiformans comb.nov., for Producing Glucuronan. Polymers (Basel) 2023; 15:polym15092177. [PMID: 37177323 PMCID: PMC10180729 DOI: 10.3390/polym15092177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/12/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023] Open
Abstract
Glucuronan is a polysaccharide composed of β-(1,4)-linked d-glucuronic acids having intrinsic properties and biological activities recoverable in many fields of application. Currently, the description of Sinorhyzobium meliloti M5N1CS mutant bacterial strain as the sole source of glucuronan makes it relevant to the exploration of new microorganisms producing glucuronan. In this study, the Peteryoungia rosettifformans strain (Rhizobia), was identified as a wild producer of an exopolysaccharide (RhrBR46) related to glucuronan. Structural and biochemical features, using colorimetric assays, Fourier infrared spectroscopy, nuclear magnetic resonance, high pressure size exclusion chromatography coupled to multi-angle light laser scattering, and enzymatic assays allowed the characterization of a polyglucuronic acid, having a molecular mass (Mw¯) of 1.85 × 105 Da, and being partially O-acetylated at C-2 and/or C-3 positions. The concentration of Mg2+ ions in the cultivation medium has been shown to impact the structure of RhrBR46, by reducing drastically its Mw¯ (73%) and increasing its DA (10%). Comparative structural analyses between RhrBR46 and the glucuronan from Sinorhyzobium meliloti M5N1CS strain revealed differences in terms of molecular weight, degree of acetylation (DA), and the distribution of acetylation pattern. These structural divergences of RhrBR46 might contribute to singular properties or biological activities of RhrBR46, offering new perspectives of application.
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Affiliation(s)
- Gwendoline Christophe
- Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Xiaoyang Hou
- Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Emmanuel Petit
- UMRT INRAe 1158 BioEcoAgro, Laboratoire BIOPI, Institut Universitaire et Technologique, Université de Picardie Jules Verne, F-80025 Amiens, France
| | - Mounir Traikia
- CNRS, ICCF, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Didier Le Cerf
- Polymères Biopolymères Surfaces, Normandie Université, UNIROUEN, INSA Rouen, CNRS, UMR6270, F-76821 Mont Saint-Aignan, France
| | - Christophe Rihouey
- Polymères Biopolymères Surfaces, Normandie Université, UNIROUEN, INSA Rouen, CNRS, UMR6270, F-76821 Mont Saint-Aignan, France
| | - Christine Gardarin
- Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Cédric Delattre
- Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- Institut Universitaire de France (IUF), 1 rue Descartes, F-75005 Paris, France
| | - Philippe Michaud
- Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Guillaume Pierre
- Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Pascal Dubessay
- Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
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Use of Anionic Polysaccharides in the Development of 3D Bioprinting Technology. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9132596] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Three-dimensional (3D) bioprinting technology is now one of the best ways to generate new biomaterial for potential biomedical applications. Significant progress in this field since two decades ago has pointed the way toward use of natural biopolymers such as polysaccharides. Generally, these biopolymers such as alginate possess specific reactive groups such as carboxylate able to be chemically or enzymatically functionalized to generate very interesting hydrogel structures with biomedical applications in cell generation. This present review gives an overview of the main natural anionic polysaccharides and focuses on the description of the 3D bioprinting concept with the recent development of bioprinting processes using alginate as polysaccharide.
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Li Y, Tian J, Tian H, Chen X, Ping W, Tian C, Lei H. Mutation-based selection and analysis of Komagataeibacter hansenii HDM1-3 for improvement in bacterial cellulose production. J Appl Microbiol 2016; 121:1323-1334. [PMID: 27455093 DOI: 10.1111/jam.13244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 03/28/2016] [Accepted: 04/10/2016] [Indexed: 11/29/2022]
Abstract
AIMS A low yield of bacterial cellulose (BC) always results from an excessive accumulation of organic acids. Screening and the selection of bacterial mutants with a low accumulation of organic acids is an efficient approach for improving BC production. METHODS AND RESULTS In combination with the proton suicide method (medium containing NaBr-NaBrO3 ), diethyl sulphate chemical mutagenesis coupled with 60 Co-γ irradiation treatment were performed for the screening and selection of desired mutant lines with a high yield of BC. Two high-yield strains, Br-3 and Co-5, as well as a low-yield strain, Br-12, were obtained. Amplified fragment length polymorphism (AFLP) was applied to explore the differences between the mutant lines and the wild type. For the Br-12 line, three specific fragments were verified, corresponding to TonB-dependent transport (TBDT), exopolysaccharides output protein (PePr) and an unknown gene. For Co-5, two specific fragments were matched, acsD and UDP-galactose-4-epimerase. In addition, metabolic analysis for the mutant lines indicated that BC production may be limited by excessive accumulation of organic acids in the fermentation. The limitation would be resolved by the cross-talk of genes involved in BC biosynthesis. CONCLUSIONS Reduced organic acid by-products from glucose in bypasses were found to be responsible for the high-yield BC synthesis in Komagataeibacter hansenii mutant strains. SIGNIFICANCE AND IMPACT OF THE STUDY The metabolic process was varied by mutagenesis-induced gene disruption of the metabolic products. A new idea was provided for the targeted screening and characterization of mutants in the future.
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Affiliation(s)
- Y Li
- Laboratory of Microbiology and Laboratory of Crop Physiology, Chinese Academic Institute of Geography and Agroecology in Northeast, Changchun, China.,University of Chinese Academy of Sciences, Beijing, China
| | - J Tian
- Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, China
| | - H Tian
- Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, China
| | - X Chen
- Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, China
| | - W Ping
- Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, China.,Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Harbin, China
| | - C Tian
- Laboratory of Microbiology and Laboratory of Crop Physiology, Chinese Academic Institute of Geography and Agroecology in Northeast, Changchun, China.
| | - H Lei
- Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin, China. .,Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education, Harbin, China.
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