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Updated: Jul 19, 2026

MR Molecular Imaging of Prostate Cancer with a Small Molecular CLT1 Peptide Targeted Contrast Agent
Published on: September 3, 2013
Prostate-Specific Membrane Antigen: Gateway to Management of Advanced Prostate Cancer.
Lena M Unterrainer1,2, Jeremie Calais1, Neil H Bander3,4
1Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA; email: lunterrainer@mednet.ucla.edu, jcalais@mednet.ucla.edu.
Prostate-specific membrane antigen (PSMA)-targeted therapies and imaging, particularly using radioligands, show significant promise for advanced prostate cancer (PC). PSMA-targeted radioligand therapy offers improved outcomes and quality of life for patients with metastatic castration-resistant PC.
Area of Science:
- Oncology
- Nuclear Medicine
- Radiopharmaceutical Science
Background:
- Prostate-specific membrane antigen (PSMA) is overexpressed on prostate cancer (PC) cells, with an accessible extracellular portion for targeted agents.
- Small-molecule radioligands are favored over antibodies for PC imaging and therapy due to faster clearance.
- PSMA positron emission tomography (PET) imaging offers superior diagnostic performance for staging and recurrence detection in high-risk PC.
Purpose of the Study:
- To review approved and non-approved PSMA-targeted imaging and therapeutic modalities for advanced prostate cancer.
- To discuss the integration of PSMA PET imaging into therapy response assessment and clinical trial endpoints.
- To explore the future of PSMA-targeted theranostics, including non-radiopharmaceutical approaches.
Main Methods:
- Literature review of PSMA-targeted imaging and therapeutic agents.
- Analysis of clinical trial data and recent FDA approvals.
- Discussion of current and future applications of PSMA-based theranostics.
Main Results:
- PSMA-targeted PET imaging demonstrates high diagnostic accuracy for staging and recurrence detection.
- 177Lu-PSMA-617 approval confirms the value of PSMA-targeted therapy for metastatic castration-resistant PC.
- PSMA-based radioligand therapy shows improved outcomes and quality of life compared to standard care.
Conclusions:
- PSMA-targeted theranostics represent a significant advancement in managing advanced prostate cancer.
- Further research is needed to optimize PSMA PET for therapy response assessment and clinical trial endpoints.
- The future of PSMA-targeted treatments includes both radiopharmaceutical and non-radiopharmaceutical modalities.
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