ArticleBioMed research international2013
F-18 labeled vasoactive intestinal peptide analogue in the PET imaging of colon carcinoma in nude mice.
Article in BioMed research international, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Calcination and ion substitution improve physicochemical and biological properties of nanohydroxyapatite for bone tissue engineering applications.Scientific reports · 2023Article
- Targeting Peptides: The New Generation of Targeted Drug Delivery Systems.Pharmaceutics · 2023Review
- New Insights in the Design of Bioactive Peptides and Chelating Agents for Imaging and Therapy in Oncology.Molecules (Basel, Switzerland) · 2017Review
- Vasoactive intestinal peptide/pituitary adenylate cyclase activating polypeptide, and their receptors and cancer.Current opinion in endocrinology, diabetes, and obesity · 2016Review
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
As large amount of vasoactive intestinal peptide (VIP) receptors are expressed in various tumors and VIP-related diseases, radiolabeled VIP provides a potential PET imaging agent for VIP receptor. However, structural modification of VIP is required before being radiolabeled and used for VIP receptor imaging due to its poor in vivo stability. As a VIP analogue, [R(8, 15, 21), L(17)]-VIP exhibited improved stability and receptor specificity in preliminary studies. In this study, F-18 labeled [R(8,15,21), L(17)]-VIP was produced with the radiochemical yield being as high as 33.6% ± 3% (decay-for-corrected, n = 5) achieved within 100 min, a specific activity of 255 GBq/ μmol, and a radiochemical purity as high as 99% as characterized by radioactive HPLC, TLC, and SDS-Page radioautography. A biodistribution study in normal mice also demonstrated fast elimination of F-18 labeled [R(8,15,21), L(17)]-VIP in the blood, liver, and gastrointestinal tracts. A further micro-PET imaging study in C26 colon carcinoma bearing mice confirmed the high tumor specificity, with the tumor/muscle radioactivity uptake ratio being as high as 3.03 at 60 min following injection, and no apparent radioactivity concentration in the intestinal tracts. In addition, blocking experiment and Western Blot test further confirmed its potential in PET imaging of VIP receptor-positive tumor.
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