Fluorescent labelled thiourea-bridged glycodendrons.
GlcNAc-coated glycodendrimers, which are polyvalent glycomimetics, display strong in vitro affinity for the rat natural killer cell protein-1A (NKR-P1A), a C-type lectin-like receptor of natural killer (NK) cells in rats, humans and some strains of mice. Administration of these compounds in vivo results in a substantial increase in the antitumour activity with involvement of the natural cell immunity. To clarify the in vitro and in vivo fate of these molecules, we synthesized labelled glycodendron analogues of the previously studied glycodendrimers. Labelling with fluorescent tags enabled the localization of the glycodendrons in white blood cells, tumours and other tissues by using different imaging techniques such as fluorescence and confocal microscopy. These studies are useful for probing the mechanism of action and fate of artificial ligands and the cell receptors involved.
Krist
Pavel
P
Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídenská 1083, 142 20 Prague 4, Czech Republic.
Vannucci
Luca
L
Kuzma
Marek
M
Man
Petr
P
Sadalapure
Kashinath
K
Patel
Anupama
A
Bezouska
Karel
K
Pospísil
Milan
M
Petrus
Ladislav
L
Lindhorst
Thisbe K
TK
Kren
Vladimír
V
D000818:Animals; D005453:Fluorescence; D005690:Galactose / Q000737:chemistry / Q000378:metabolism; D006001:Glycoconjugates / Q000138:chemical synthesis / Q000737:chemistry*; D007694:Killer Cells, Natural / Q000166:cytology / Q000378:metabolism; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D018613:Microscopy, Confocal; D015394:Molecular Structure; D013154:Spleen / Q000166:cytology / Q000378:metabolism; D013890:Thiourea / Q000737:chemistry*
D006001:Glycoconjugates; D013890:Thiourea; D005690:Galactose