Synthesis and composition of amino acid linking groups conjugated to compounds used for the targeted imaging of tumors: a patent evaluation of US20160011199A1.
The present patent discloses the identification of small-molecule fluorescent probes constituted by pteroic acid moiety connected to near-infrared (NIR) dye via amino acids. These folate receptor (FR) targeted conjugates were shown to have high affinity for tumors that overexpress FRs. A selected compound from this new class, pteroyl-L-tyrosine-S0456 (OTL-0038), displays high affinity and specificity for FRs and was shown (i) to accumulate in vivo in tumor cells expressing FRs, and (ii) to be non-toxic in mice at clinical dose x 1000. This compound holds considerable promise for the location and detection of tumoral cells in the context of fluorescence guided surgery.
a Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS, Université de Montpellier, ENSCM, Ecole Nationale Supérieure de Chimie de Montpellier , Montpellier Cedex , France.
Jean-Yves
JY
Winum
Optical imaging; fluorescence; folate receptors; intraoperative detection; near-infrared dye