ArticleNuclear medicine and biology
Preliminary evaluation of 1'-[(18)F]fluoroethyl-β-D-lactose ([(18)F]FEL) for detection of pancreatic cancer in nude mouse orthotopic xenografts.
Article in Nuclear medicine and biology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Fluorinated carbohydrates forChemical Society reviews · 2023Review
- Esterase-activatable and GSH-responsive Triptolide Nano-prodrug for the Eradication of Pancreatic Cancer.Advanced nanobiomed research · 2021Article
- Metabolomics in cancer research and emerging applications in clinical oncology.CA: a cancer journal for clinicians · 2021Review
- The Continuing Evolution of Molecular Functional Imaging in Clinical Oncology: The Road to Precision Medicine and Radiogenomics (Part I).Molecular diagnosis & therapy · 2019Review
- Preclinical PET imaging of HIP/PAP using 1'-Oncotarget · 2017Article
- Imaging tumor metabolism using positron emission tomography.Cancer journal (Sudbury, Mass.)Review
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7 authors.
Funding
Abstract
introductionEarly detection of pancreatic cancer could save many thousands of lives. Non-invasive diagnostic imaging, including PET with [(18)F]FDG, has inadequate resolution for detection of small (2-3 mm) pancreatic tumours. We demonstrated the efficacy of PET imaging with an (18)F-labelled lactose derivative, [(18)F]FEDL, that targets HIP/PAP, a biomarker that is overexpressed in the peritumoural pancreas. We developed another analogue, 1-[(18)F]fluoroethyl lactose ([(18)F]FEL), which is simpler to synthesise, for the same application. We conducted a preliminary evaluation of the new probe and its efficacy in detecting orthotopic pancreatic carcinoma xenografts in mice.
methodsXenografts were developed in nude mice by injecting L3.6 pl/GL(+) pancreatic carcinoma cells into the pancreas of each mouse. Tumour growth was monitored by bioluminescence imaging (BLI); accuracy of BLI tumour size estimates was verified by MRI in two representative mice. When the tumour size reached approximately 2-3mm, the animals were injected with [(18)F]FEL (3.7 MBq) and underwent static PET/CT scans. Blood samples were collected at 2, 5, 10, 20 and 60 min after [(18)F]FEL injection to track blood clearance. Following imaging, animals were sacrificed and their organs and tumours/pancreatic tissue were collected and counted on a gamma counter. Pancreas, including tumour, was frozen, sliced and used for autoradiography and immunohistochemical analysis of HIP/PAP expression.
resultsTumour growth was rapid, as observed by BLI and MRI. Blood clearance of [(18)F]FEL was bi-exponential, with half-lives of approximately 3.5 min and 40 min. Mean accumulation of [(18)F]FEL in the peritumoural pancreatic tissue was 1.29±0.295 %ID/g, and that in the normal pancreas of control animals was 0.090±0.101 %ID/g. [(18)F]FEL was cleared predominantly by the kidneys. Comparative analysis of autoradiographic images and immunostaining results demonstrated a correlation between [(18)F]FEL binding and HIP/PAP expression.
conclusion[(18)F]FEL may be useful for non-invasive imaging of early-stage pancreatic tumours by PET. The results warrant further studies.
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