Bonfils, Edwige published the artcileUptake by macrophages of a biotinylated oligo-α-deoxythymidylate by using mannosylated streptavidin, Recommanded Product: (2R,3S,4S,5S,6R)-2-(Hydroxymethyl)-6-(4-isothiocyanatophenoxy)tetrahydro-2H-pyran-3,4,5-triol, the publication is Bioconjugate Chemistry (1992), 3(4), 277-84, database is CAplus and MEDLINE.
Streptavidin substituted with mannose residues increased by 20-fold the intracellular concentration of a biotinylated dodecakis(α-deoxythymidylate) in macrophages by comparison with the uptake of free oligodeoxynucleotide. Streptavidin, the bacterial homolog of the very basic avidin, which does not contain any carbohydrate moieties and is a neutral protein, was substituted with 12 mannose residues in order to be recognized and internalized by mannose-specific lectins on the surface of macrophages. A 3′-biotinylated 5′-fluoresceinylated dodecakis(α-deoxythymidylate) was synthesized and bound onto mannosylated streptavidin. The conjugate was isolated, and by using flow cytometry, it was shown that the uptake of fluoresceinylated oligodeoxynucleotides bound to mannosylated streptavidin by macrophages is 20-fold higher than that of free oligodeoxynucleotides and that the uptake was competitively inhibited by mannosylated serum albumin. Glycosylated streptavidin conjugates recognizing specific membrane lectins on different cells provide the possibility to target biotinylated antisense oligodeoxynucleotides and to increase the biol. effect of these chemotherapeutic agents.
Bioconjugate Chemistry published new progress about 96345-79-8. 96345-79-8 belongs to alcohols-buliding-blocks, auxiliary class Sugar Units,Gal and Man, name is (2R,3S,4S,5S,6R)-2-(Hydroxymethyl)-6-(4-isothiocyanatophenoxy)tetrahydro-2H-pyran-3,4,5-triol, and the molecular formula is C13H15NO6S, Recommanded Product: (2R,3S,4S,5S,6R)-2-(Hydroxymethyl)-6-(4-isothiocyanatophenoxy)tetrahydro-2H-pyran-3,4,5-triol.
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