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Characterization of New Oligosaccharides Obtained by An Enzymatic Cleavage of the Exopolysaccharide Produced by the Deep-Sea Bacterium Alteromonas infernus Using its Cell Extract ArchiMer
Akoumany, Katy; Zykwinska, Agata; Sinquin, Corinne; Marchand, Laetitia; Fanuel, Mathieu; Ropartz, David; Rogniaux, Hélène; Pipelier, Muriel; Delbarre Ladrat, Christine; Colliec Jouault, Sylvia.
Bacteria from deep-sea hydrothermal vents constitute an attractive source of bioactive molecules. In particular, exopolysaccharides (EPS) produced by these bacteria become a renewable source of both biocompatible and biodegradable molecules. The low molecular weight (LMW) derivatives of the GY785 EPS produced by the deep-sea hydrothermal vent strain Alteromonas infernus have previously displayed some biological properties, similar to those of glycosaminoglycans (GAG), explored in cancer and tissue engineering. These GAG-mimetic derivatives are obtained through a free radical depolymerization process, which could, however, affect their structural integrity. In a previous study, we have shown that A. infernus produces depolymerizing enzymes active on its own...
Tipo: Text Palavras-chave: Deep-sea bacterium; Alteromonas infernus; Wild-type strain; Exopolysaccharides; Glycosaminoglycan-mimetic; Enzymatic depolymerization; Structural analysis; Mass spectrometry.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00515/62644/67021.pdf
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Dérivés de l'exopolysaccharide d’Alteromonas infernus, mimétiques de glycosaminoglycanes, et développement d'une stratégie pour leur analyse structurale ArchiMer
Akoumany, Katy.
In search of new bioactive compounds, marine bacteria constitute a considerable source of innovative molecules. The bacterial exopolysaccharide (EPS), produced by the deep-sea hydrothermal vent strain Alteromonas infernus, is a high-molecular-weight, highly branched and anionic heteropolysaccharide with a nonasaccharide repeating unit. This macromolecule and its low-molecular-weight derivatives obtained through a chemical process have previously displayed interesting GAG-like properties such as anti-metastatic and anti-coagulant (heparin-like) ones; they can also improve stem cell differentiation. To investigate the molecular bases of the biological activity and to facilitate the structural analysis of the bioactive derivatives (~20 000 g/mol), fragments...
Tipo: Text Palavras-chave: Bactérie marine; Exopolysaccharides; Dépolymérisation enzymatique; Synthèse organique; Marine bacteria; Exopolysaccharides; Enzymatic depolymerisation; Organic synthesis..
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00605/71733/70206.pdf
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