VPAC1 Targeted (64)Cu-TP3805 Positron Emission Tomography Imaging of Prostate Cancer: Preliminary Evaluation in Man.
Publication/Presentation Date
2-1-2016
Abstract
OBJECTIVE: To evaluate (64)Cu-TP3805 as a novel biomolecule, to positron emission tomography (PET) image prostate cancer (PC), at the onset of which VPAC1, the superfamily of G protein-coupled receptors, is expressed in high density on PC cells, but not on normal cells.
MATERIALS AND METHODS: Twenty-five patients undergoing radical prostatectomy were PET/X-ray computerized tomography imaged preoperatively with (64)Cu-TP3805. Standardized maximum uptake (SUVmax) values were determined and malignant lesions (standardized uptake value > 1.0) counted, and compared with histologic findings. Whole-mount pathology slides from 6 VPAC1 PET imaged patients, 3 benign prostatic hyperplasia patients, 1 malignant and 1 benign lymph node underwent digital autoradiography (DAR) after (64)Cu-TP3805 incubation and were compared to hematoxylin- and eosin-stained slides.
RESULTS: In 25 patients who underwent PET imaging, 212 prostate gland lesions had SUVmax > 1.0 vs 127 lesions identified by histology of biopsy tissues. The status of the additional 85 PET identified prostate lesions remains to be determined. In 68 histologic slides from 6 PET imaged patients, DAR identified 105 of 107 PC foci, 19 of 19 high-grade prostatic intraepithelial neoplasias, and ejaculatory ducts and verumontanum involved with cancer. Additionally, DAR found 9 PC lesions not previously identified histologically. The positive and negative lymph nodes were correctly identified, and in 3 of 3 benign prostatic hyperplasia patients and 5 of 5 cysts, DAR was negative.
CONCLUSION: This feasibility study demonstrated that (64)Cu-TP3805 delineates PC in vivo and ex vivo, provided normal images for benign masses, and is worthy of further studies.
Volume
88
First Page
111
Last Page
118
ISSN
1527-9995
Published In/Presented At
Tripathi, S., Trabulsi, E. J., Gomella, L., Kim, S., McCue, P., Intenzo, C., Birbe, R., Gandhe, A., Kumar, P., & Thakur, M. (2016). VPAC1 Targeted (64)Cu-TP3805 Positron Emission Tomography Imaging of Prostate Cancer: Preliminary Evaluation in Man. Urology, 88, 111–118. https://doi.org/10.1016/j.urology.2015.10.012
Disciplines
Business Administration, Management, and Operations | Health and Medical Administration | Management Sciences and Quantitative Methods
PubMedID
26519886
Department(s)
Administration and Leadership
Document Type
Article