Improved radiosynthesis and preliminary in vivo evaluation of the 11 C-labeled tetrazine [ 11 C]AE-1 for pretargeted PET imaging
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Improved radiosynthesis and preliminary in vivo evaluation of the 11 C-labeled tetrazine [ 11 C]AE-1 for pretargeted PET imaging. / Stéen, E. Johanna L.; Jørgensen, Jesper T.; Petersen, Ida N.; Nørregaard, Kamilla; Lehel, Szabolcs; Shalgunov, Vladimir; Birke, Alexander; Edem, Patricia E.; L'Estrade, Elina T.; Hansen, Hanne D.; Villadsen, Jonas; Erlandsson, Maria; Ohlsson, Tomas; Yazdani, Abdolreza; Valliant, John F.; Kristensen, Jesper L.; Barz, Matthias; Knudsen, Gitte M.; Kjær, Andreas; Herth, Matthias M.
I: Bioorganic and Medicinal Chemistry Letters, Bind 29, Nr. 8, 01.01.2019, s. 986-990.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › fagfællebedømt
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TY - JOUR
T1 - Improved radiosynthesis and preliminary in vivo evaluation of the 11 C-labeled tetrazine [ 11 C]AE-1 for pretargeted PET imaging
AU - Stéen, E. Johanna L.
AU - Jørgensen, Jesper T.
AU - Petersen, Ida N.
AU - Nørregaard, Kamilla
AU - Lehel, Szabolcs
AU - Shalgunov, Vladimir
AU - Birke, Alexander
AU - Edem, Patricia E.
AU - L'Estrade, Elina T.
AU - Hansen, Hanne D.
AU - Villadsen, Jonas
AU - Erlandsson, Maria
AU - Ohlsson, Tomas
AU - Yazdani, Abdolreza
AU - Valliant, John F.
AU - Kristensen, Jesper L.
AU - Barz, Matthias
AU - Knudsen, Gitte M.
AU - Kjær, Andreas
AU - Herth, Matthias M.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Pretargeted nuclear imaging based on the ligation between tetrazines and nano-sized targeting agents functionalized with trans-cyclooctene (TCO) has recently been shown to improve both imaging contrast and dosimetry in nuclear imaging of nanomedicines. Herein, we describe the improved radiosynthesis of a 11 C-labeled tetrazine ([ 11 C]AE-1) and its preliminary evaluation in both mice and pigs. Pretargeted imaging in mice was carried out using both a new TCO-functionalized polyglutamic acid and a previously reported TCO-functionalized bisphosphonate system as targeting agents. Unfortunately, pretargeted imaging was not successful using these targeting agents in pair with [ 11 C]AE-1. However, brain imaging in pig indicated that the tracer crossed the blood-brain-barrier. Hence, we suggest that this tetrazine scaffold could be used as a starting point for the development of pretargeted brain imaging, which has so far been a challenging task.
AB - Pretargeted nuclear imaging based on the ligation between tetrazines and nano-sized targeting agents functionalized with trans-cyclooctene (TCO) has recently been shown to improve both imaging contrast and dosimetry in nuclear imaging of nanomedicines. Herein, we describe the improved radiosynthesis of a 11 C-labeled tetrazine ([ 11 C]AE-1) and its preliminary evaluation in both mice and pigs. Pretargeted imaging in mice was carried out using both a new TCO-functionalized polyglutamic acid and a previously reported TCO-functionalized bisphosphonate system as targeting agents. Unfortunately, pretargeted imaging was not successful using these targeting agents in pair with [ 11 C]AE-1. However, brain imaging in pig indicated that the tracer crossed the blood-brain-barrier. Hence, we suggest that this tetrazine scaffold could be used as a starting point for the development of pretargeted brain imaging, which has so far been a challenging task.
KW - Carbon-11
KW - PET imaging
KW - Pretargeting
KW - Tetrazine
KW - Trans-cyclooctene
U2 - 10.1016/j.bmcl.2019.02.014
DO - 10.1016/j.bmcl.2019.02.014
M3 - Journal article
C2 - 30795854
AN - SCOPUS:85061657259
VL - 29
SP - 986
EP - 990
JO - Bioorganic & Medicinal Chemistry Letters
JF - Bioorganic & Medicinal Chemistry Letters
SN - 0960-894X
IS - 8
ER -
ID: 214297865