The present invention concerns a method for labeling specifically living bacteria of a given category of bacteria in a sample comprising bacteria, the method comprising the steps of: a) incubating said bacteria of said sample with at least one analog of a monosaccharide compound, said monosaccharide being an endogenous monosaccharide residue of glycans of the outer membrane of such given category of bacteria, the said endogenous monosaccharide residue comprising an ulosonic acid or ulosonate salt residue, the said analog of a monosaccharide compound being a modified monosaccharide substituted at a given position by a first reactive chemical group capable to react with a second reactive group of a labeling molecule, the said given position being preferably a position which comprises a free group in the said endogenous monosaccharide residue incorporated within said glycans of the outer membrane of the bacteria, b) contacting said bacteria with a said labeling molecule com prising a said second reactive group, for generating the reaction of said first reactive group of said analog residue incorporated within said glycans of the outer membrane of said living bacteria with said second reactive group of said labeling molecule.

A method for specifically labeling living bacteria

A kit for labeling bacteria, the kit including:
 an analog of an endogenous monosaccharide residue of glycans of the outer membrane of a given category of bacteria, the endogenous monosaccharide residue being an ulosonic acid or ulosonate salt residue, the analog of a monosaccharide compound being a modified monosaccharide substituted at a given position by a first reactive group capable of reacting with a second reactive group of a labeling molecule; the labeling molecule having the second reactive group capable of reacting with said first reactive group; reactants for generating the reaction of the first reactive group of the analog residue incorporated within the glycans of the outer membrane of the bacteria with the second reactive group of the labeling molecule; and a culture or incubation medium allowing growth of the given category of bacteria, specific to the growth of the given category of bacteria.

Kit for labelling bacteria

248th American Chemical Society National Meeting and Exposition, San Francisco, California, USA - August 10-14, 2014

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248th American Chemical Society National Meeting and Exposition, San Francisco, California, USA - August 10-14, 2014