Abstract
In this report, we describe the synthesis of 4-[ 18F]-fluorobenzoyl-annexin V (4-[ 18F]FBA). In a four-step procedure, 4-[ 18F]FBA was synthesised with a microcomputer controlled, automated module within 90 min. The radiochemical yield was in the range of 15–20% (corrected for decay) with a specific activity of more than 35 GBq/μmol. The specific binding was confirmed by studies of 4-[ 18F]FBA with phosphatidylserine-containing liposomes. The biological activity of 4-[ 18F]FBA was verified by measuring its binding to Jurkat T-cell lymphoblasts after induction of apoptosis as compared to control cells without apoptosis. 4-[ 18F]FBA seems to be a suited tracer to measure apoptotic activity in vivo.
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