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[68Ga]Ga-DFO-c(RGDyK): Synthesis and Evaluation of Its Potential for Tumor Imaging in Mice
S. Krajcovicova, A. Daniskova, K. Bendova, Z. Novy, M. Soural, M. Petrik
Jazyk angličtina Země Švýcarsko
Typ dokumentu časopisecké články
Grantová podpora
CZ.02.1.01/0.0/0.0/16_019/0000868
European Regional Development Fund
Free Medical Journals od 2000
Freely Accessible Science Journals od 2000
PubMed Central od 2007
Europe PubMed Central od 2007
ProQuest Central od 2000-03-01
Open Access Digital Library od 2000-01-01
Open Access Digital Library od 2007-01-01
Health & Medicine (ProQuest) od 2000-03-01
ROAD: Directory of Open Access Scholarly Resources od 2000
Odkazy
PubMed
34299008
DOI
10.3390/ijms22147391
Knihovny.cz E-zdroje
- MeSH
- deferoxamin analogy a deriváty chemická syntéza chemie MeSH
- glioblastom diagnostické zobrazování MeSH
- integrin alfaVbeta3 metabolismus MeSH
- lidé MeSH
- myši inbrední BALB C MeSH
- myši nahé MeSH
- myši MeSH
- nádorové buněčné linie MeSH
- patologická angiogeneze diagnostické zobrazování MeSH
- počítačová rentgenová tomografie metody MeSH
- pozitronová emisní tomografie metody MeSH
- radioizotopy galia chemie MeSH
- tkáňová distribuce MeSH
- transplantace heterologní MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- myši MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
Angiogenesis has a pivotal role in tumor growth and the metastatic process. Molecular imaging was shown to be useful for imaging of tumor-induced angiogenesis. A great variety of radiolabeled peptides have been developed to target αvβ3 integrin, a target structure involved in the tumor-induced angiogenic process. The presented study aimed to synthesize deferoxamine (DFO)-based c(RGD) peptide conjugate for radiolabeling with gallium-68 and perform its basic preclinical characterization including testing of its tumor-imaging potential. DFO-c(RGDyK) was labeled with gallium-68 with high radiochemical purity. In vitro characterization including stability, partition coefficient, protein binding determination, tumor cell uptake assays, and ex vivo biodistribution as well as PET/CT imaging was performed. [68Ga]Ga-DFO-c(RGDyK) showed hydrophilic properties, high stability in PBS and human serum, and specific uptake in U-87 MG and M21 tumor cell lines in vitro and in vivo. We have shown here that [68Ga]Ga-DFO-c(RGDyK) can be used for αvβ3 integrin targeting, allowing imaging of tumor-induced angiogenesis by positron emission tomography.
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- $a Angiogenesis has a pivotal role in tumor growth and the metastatic process. Molecular imaging was shown to be useful for imaging of tumor-induced angiogenesis. A great variety of radiolabeled peptides have been developed to target αvβ3 integrin, a target structure involved in the tumor-induced angiogenic process. The presented study aimed to synthesize deferoxamine (DFO)-based c(RGD) peptide conjugate for radiolabeling with gallium-68 and perform its basic preclinical characterization including testing of its tumor-imaging potential. DFO-c(RGDyK) was labeled with gallium-68 with high radiochemical purity. In vitro characterization including stability, partition coefficient, protein binding determination, tumor cell uptake assays, and ex vivo biodistribution as well as PET/CT imaging was performed. [68Ga]Ga-DFO-c(RGDyK) showed hydrophilic properties, high stability in PBS and human serum, and specific uptake in U-87 MG and M21 tumor cell lines in vitro and in vivo. We have shown here that [68Ga]Ga-DFO-c(RGDyK) can be used for αvβ3 integrin targeting, allowing imaging of tumor-induced angiogenesis by positron emission tomography.
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