The invention relates to a method for labeling specifically living bacteria, comprising the steps of:
a) incubating said bacteria of said sample with at least one modified monosaccharide compound comprising a first reactive chemical group capable to chemically react with a second reactive group, so that a residue bearing said first reactive group is incorporated into the envelope of such bacteria, and
b) contacting said modified monosaccharide residue incorporated within the envelope of the bacteria, with a labeling molecule comprising a said second reactive group, for generating the chemical reaction of said first reactive group with said second reactive group,
characterized in that said modified monosaccharide compound has the following formula (I), or a salt thereof:
Wherein
- A, B and C can be independently H, OH, NH2, OH and NH2 being substituted or not by protecting groups thereof, and
- D is an alkyl chain in C2 to C4, each carbon being substituted or not by OH or NH2, OH and NH2 being substituted or not by protecting groups thereof, and
- at least one of A, B, C or D groups is substituted by a said first reactive group.
本发明涉及一种标记特定活细菌的方法,包括以下步骤
a) 将所述样品中的细菌与至少一种改性
单糖化合物一起培养,该改性
单糖化合物包含能与第二反应基团发生
化学反应的第一反应基团,从而使带有所述第一反应基团的残留物结合到这种细菌的包膜中,以及
b) 将包含在细菌包膜中的所述改性
单糖残基与包含所述第二反应基团的标记分子接触,以产生所述第一反应基团与所述第二反应基团的
化学反应、
其特征在于,所述改性
单糖化合物具有下式 (I) 或其盐:
其中
- A、B 和 C 可以独立地为 H、OH、NH2,OH 和 NH2 可被或不被其保护基取代,以及
- D 是 C2 至 C4 的烷基链,每个碳可被或不被 OH 或 NH2 取代,OH 和 NH2 可被或不被其保护基取代,以及
- A、B、C 或 D 基团中至少有一个被上述第一反应基团取代。