Methods for making the functionalized glycoconjugates include (a) contacting a cell with a first monosaccharide, and (b) incubating the cell under conditions whereby the cell (i) internalizes the first monosaccharide, (ii) biochemically processes the first monosaccharide into a second saccharide, (iii) conjugates the saccharide to a carrier to form a glycoconjugate, and (iv) extracellularly expresses the glycoconjugate to form an extracellular glycoconjugate comprising a selectively reactive functional group. Methods for forming products at a cell further comprise contacting the functional group of the extracellularly expressed glycoconjugate with an agent which selectively reacts with the functional group to form a product. Subject compositions include cyto-compatible monosaccharides comprising a nitrogen or ether linked functional group selectively reactive at a cell surface and compositions and cells comprising such saccharides.
制造官能化糖共轭物的方法包括:(a)使细胞与第一
单糖接触,(b)在细胞(i)内化第一
单糖的条件下培养细胞、(ii)将第一种
单糖生化处理成第二种糖,(iii)将糖与载体共轭形成糖共轭物,以及(iv)细胞外表达糖共轭物以形成包含选择性反应官能团的细胞外糖共轭物。在细胞内形成产物的方法还包括将细胞外表达的糖结合物的官能团与选择性地与官能团反应以形成产物的制剂接触。研究对象组合物包括细胞相容性
单糖,该
单糖包含一个在细胞表面选择性反应的氮或醚连接官能团,以及包含这种糖的组合物和细胞。