Picazoplatin, an Azide-Containing Platinum(II) Derivative
for Target Analysis by Click Chemistry
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Abstract
Despite
the broad use of platinum-based chemotherapeutics, identification
of their full range of cellular targets remains a significant challenge.
In order to identify, visualize, and isolate cellular targets of Pt(II)
complexes, we have modified the chemotherapeutic drug picoplatin with
an azide moiety for subsequent click reactivity. The new compound
picazoplatin readily binds DNA and RNA oligonucleotides and undergoes
facile post-labeling click reactions to alkyne-fluorophore conjugates.
Pt-fluorophore click reactions in rRNA purified from drug-treated Saccharomyces cerevisiae demonstrate its potential
for future <i>in vivo</i> efforts