Micro-flow photosynthesis of new dienophiles for inverse-electron-demand Diels–Alder reactions. Potential applications for pretargeted in vivo PET imaging† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c6sc02933g Click here for additional data file.

نویسندگان

  • Emilie M. F. Billaud
  • Elnaz Shahbazali
  • Muneer Ahamed
  • Frederik Cleeren
  • Timothy Noël
  • Michel Koole
  • Alfons Verbruggen
  • Volker Hessel
  • Guy Bormans
چکیده

Pretargeted PET imaging has emerged as an effective two-step in vivo approach that combines the superior affinity and selectivity of antibodies with the rapid pharmacokinetics and favorable dosimetry of smaller molecules radiolabeled with short-lived radionuclides. This approach can be based on the bioorthogonal inverse-electron-demand Diels–Alder (IEDDA) reaction between tetrazines and trans-cyclooctene (TCO) derivatives. We aimed to develop new [F]TCO–dienophiles with high reactivity for IEDDA reactions, and favorable in vivo stability and pharmacokinetics. New dienophiles were synthesized using an innovative micro-flow photochemistry process, and their reaction kinetics with a tetrazine were determined. In vivo stability and biodistribution of the most promising F-radiolabeled-TCO-derivative ([F]3) was investigated, and its potential for in vivo pretargeted PET imaging was assessed in tumor-bearing mice. We demonstrated that [F]3 is a suitable dienophile for IEDDA reactions and for pretargeting applications.

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عنوان ژورنال:

دوره 8  شماره 

صفحات  -

تاریخ انتشار 2017