Centre National De La Recherche Scientifique

Université Grenoble Alpes

Bernard Priem

Eric Samain

The present invention relates to a method for in vivo production of glycosaminoglycans (GAG), by metabolic engineering in a genetically modified cell. In a method according to the invention, said cell is genetically modified in order to express the genes coding for the enzymes that are suitable for synthesizing GAG from an exogenous precursor, preferably internalized by the cell. According to one specific feature, the present invention relates to a method for producing chondroitin or heparosan in a genetically modified bacterial cell, from an exogenous beta-galactoside precursor, preferably internalized by the cell. According to another specific feature, the present invention relates to the use of ancell comprising at least the genes glcA-T, kfoC, kfiD and wbpP for the production of chondroitin. According to yet another specific feature, the present invention relates to the use of ancell comprising at least the genes glcA-T, kfiA, kfiB, kfiC and kfiD for the production of heparosan. The present invention also relates to the use of the obtained glycosaminoglycans by implementing a method according to the invention in order to prepare a drug, a food composition or a cosmetic product.

Method for in vivo production of glycosaminoglycans

The invention concerns the production by microbiological process of oligopolysaccharides of biological interest. More particularly, the invention concerns a method for synthesizing in vivo the oligopolysaccharides by internalization of an exogenous precursor in growing bacterial cells expressing adequate modifying and glycosylating genes.

Method for producing oligopolysaccharides

The invention concerns the production by microbiological process of oligopolysaccharides of biological interest. More particularly, the invention concerns a method for synthesizing in vivo oligopolysaccharides by internalization of an exogenous precursor in growing bacterial cells expressing adequate modifying and glycosylating genes.

Growing community of inventors

Grenoble, France

Bernard Priem