Evaluation of prostate-specific membrane antigen as an imaging reporter

Mark A. Castanares, Amarnath Mukherjee, Wasim H. Chowdhury, Minzhi Liu, Ying Chen, Ronnie C. Mease, Yuchuan Wang, Ronald Rodriguez, Shawn E. Lupold, Martin G. Pomper

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Genetic reporters provide a noninvasive method to monitor and evaluate a population of cells. The ideal properties of a gene reporter-probe system include biocompatibility, lack of immunogenicity, low background expression or signal, and high sensitivity of detection. The prostate-specific membrane antigen (PSMA) is an attractive candidate for a genetic reporter as it is a human transmembrane protein with a selective expression pattern, and there are several PSMA imaging agents available for clinical and preclinical applications. We evaluated the use of PSMA as a genetic imaging reporter by comparison to 2 clinically established reporters, the mutant herpes simplex virus type I thymidine kinase and the human sodium-iodide symporter. Methods: Adenoviruses expressing each reporter were constructed and validated in vitro for expression and function. To compare PSMA with existing imaging reporters, a bilateral Matrigel suspension model was established with nude mice bearing cells equally infected with each reporter or control adenovirus. Dynamic PET was performed, and time-activity curves were generated for each reporter-probe pair. Results: A comparison of peak target-to-background ratios revealed that PSMA offered the highest ratio relative to the control Matrigel suspension as well as muscle. Further, as proof of concept, PSMA was applied as an imaging reporter to monitor adenoviral liver transduction with both nuclear and optical imaging probes. Conclusion: These preliminary studies support further development of PSMA as a noninvasive genetic reporter.

Original languageEnglish (US)
Pages (from-to)805-811
Number of pages7
JournalJournal of Nuclear Medicine
Volume55
Issue number5
DOIs
StatePublished - May 1 2014
Externally publishedYes

Fingerprint

Adenoviridae
Suspensions
Thymidine Kinase
Optical Imaging
Simplexvirus
human glutamate carboxypeptidase II
Reporter Genes
Nude Mice
Muscles
Liver
Population
Proteins
matrigel
In Vitro Techniques
sodium-iodide symporter

Keywords

  • DCFPyL
  • Molecular-genetic imaging
  • Optical imaging
  • Positron emission tomography
  • PSMA

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Castanares, M. A., Mukherjee, A., Chowdhury, W. H., Liu, M., Chen, Y., Mease, R. C., ... Pomper, M. G. (2014). Evaluation of prostate-specific membrane antigen as an imaging reporter. Journal of Nuclear Medicine, 55(5), 805-811. https://doi.org/10.2967/jnumed.113.134031

Evaluation of prostate-specific membrane antigen as an imaging reporter. / Castanares, Mark A.; Mukherjee, Amarnath; Chowdhury, Wasim H.; Liu, Minzhi; Chen, Ying; Mease, Ronnie C.; Wang, Yuchuan; Rodriguez, Ronald; Lupold, Shawn E.; Pomper, Martin G.

In: Journal of Nuclear Medicine, Vol. 55, No. 5, 01.05.2014, p. 805-811.

Research output: Contribution to journalArticle

Castanares, MA, Mukherjee, A, Chowdhury, WH, Liu, M, Chen, Y, Mease, RC, Wang, Y, Rodriguez, R, Lupold, SE & Pomper, MG 2014, 'Evaluation of prostate-specific membrane antigen as an imaging reporter', Journal of Nuclear Medicine, vol. 55, no. 5, pp. 805-811. https://doi.org/10.2967/jnumed.113.134031
Castanares, Mark A. ; Mukherjee, Amarnath ; Chowdhury, Wasim H. ; Liu, Minzhi ; Chen, Ying ; Mease, Ronnie C. ; Wang, Yuchuan ; Rodriguez, Ronald ; Lupold, Shawn E. ; Pomper, Martin G. / Evaluation of prostate-specific membrane antigen as an imaging reporter. In: Journal of Nuclear Medicine. 2014 ; Vol. 55, No. 5. pp. 805-811.
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