Tricine co-ligand improved the efficacy of 99m Tc-HYNIC-(Ser)3 -J18 peptide for targeting and imaging of non-small-cell lung cancer

Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie
Zahra ShaghaghiSeyed Jalal Hosseinimehr

Abstract

The early diagnosis of non-small cell lung cancer (NSCLC) is important for increasing survival rate and improving quality life of patients. The aim of this study was to investigate 99m Tc-(tricine)-HYNIC-(Ser)3-J18 for targeting and imaging of NSCLC in A-549 xenografted nude mice. The (Ser)3-J18 peptide was conjugated with HYNIC and labeled with 99m Tc using tricine as a co-ligand. The radiolabeled peptide was evaluated for its radiochemical purity, stability, receptor binding and internalization in vitro. The future experiments were performed for tumor targeting and imaging in A-549 tumor-bearing mice. 99m Tc-(tricine)-HYNIC-(Ser)3-J18 was obtained at high labeling efficiency at room temperature and favorable stability in saline and human plasma. At the cellular level, the radiolabeled peptide specifically bond to A-549 cells with a KD 4.1 ± 1.3 nM. Biodistribution study revealed tumor to blood and tumor to muscle ratios were about 3.12 and 5.63 respectively after 2 h injection of radiolabeled peptide. These ratios were significantly decreased by co-injection of excess non-labeled peptide in mice. This radiolabeled peptide selectively targeted to NSCLC tumor and exhibited a high target uptake combined with acceptable low backg...Continue Reading

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Feb 15, 2018·Chemical Biology & Drug Design·Zahra ShaghaghiSeyed Jalal Hosseinimehr

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Citations

Mar 6, 2019·Mini Reviews in Medicinal Chemistry·Soghra Farzipour, Seyed Jalal Hosseinimehr
Mar 2, 2021·Biochimica Et Biophysica Acta. Reviews on Cancer·Majid PiramoonSeyed Jalal Hosseinimehr

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