A critical limitation of bioorthogonal click chemistry for in vivo applications has been its low reaction effi ciency due to the pharmacokinetic barriers, such as blood distribution, circulation, and elimination in living organisms. To identify key factors that dominate the effi ciency of click chemistry, here a rational design of near-infrared fl uorophores containing tetrazine as a click moiety is proposed. Using trans -cyclooctene-modifi ed cells in live mice, it is found that the in vivo click chemistry can be improved by subtle changes in lipophilicity and surface charges of intravenously administered moieties. By controlling pharmacokinetics, biodistribution, and clearance of click moieties, it is proved that the chemical structure dominates the fate of in vivo click ligation.
Site-Specific In Vivo Bioorthogonal Ligation via Chemical Modulation
Posted by
Heebeom Koo
on 12 09 2019
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