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von Eyben FE, Virgolini I, Baum R. Review on the Increasing Role for PSMA-Based Radioligand Therapy in Prostate Cancer. Cancers (Basel) 2024; 16:2520. [PMID: 39061160 PMCID: PMC11274522 DOI: 10.3390/cancers16142520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 07/02/2024] [Accepted: 07/11/2024] [Indexed: 07/28/2024] Open
Abstract
In 2021, two randomized controlled trials (RCTs), TheraP and VISION, demonstrated that 177Lu-PSMA-617 as monotherapy was more effective for the decline of PSA than the comparator third-line treatments. METHODS Our review summarizes new RCTs that add to the use of radioligand therapy (RLT) for patients with high-risk prostate cancer (PCa). RESULTS Four past and present RCTs included 1081 patients. An RCT, ENZA-p, studied first-line treatment of patients with metastatic castration-resistant PCa (mCRPC). A combination of enzalutamide (ENZA) and 177Lu-PSMA-617 gave longer progression-free survival than ENZA as monotherapy. Other RCTs of patients with mCRPC, including the PSMAfore, and SPLASH trials, showed 177Lu-PSMA-617 as second-line treatment gave better progression-free survival than androgen receptor pathway inhibitors (combined p value < 6.9 × 10-6). CONCLUSIONS Patients with PCa gain if they are given PSMA-RLT early in the treatment of PCa and as part of combination therapies.
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Affiliation(s)
| | - Irene Virgolini
- Department of Nuclear Medicine, University Hospital Innsbruck, 6020 Innsbruck, Austria
| | - Richard Baum
- DKD Helios Clinic, 65 191 Frankfurth-Wiesbaden, Germany
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2
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Vorster M, Sathekge M. Advances in PSMA Alpha Theragnostics. Semin Nucl Med 2024; 54:591-602. [PMID: 38658300 DOI: 10.1053/j.semnuclmed.2024.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 03/19/2024] [Indexed: 04/26/2024]
Abstract
Alpha theranostics offer an attractive alternative form of therapy, which has best been investigated and documented with 225Ac-PSMA in patients with prostate cancer. Advantages offered by targeted alpha therapy include overcoming radiation resistance, oxygen independence, effecting double-stranded DNA breakages within the tumors with anticipated improved clinical outcomes and an acceptable side effect profile. The previous Seminars article on this topic, published in 2020, had to rely mostly on published case reports and small observational studies. In the last few years, however, several meta-analyses have emerged that evaluate the safety and efficacy of 225Ac-PSMA in prostate cancer patients, followed most recently by a multi-center retrospective study initiated by WARMTH. The findings of these publications, together with the exploration of TAT offered in clinical conditions other than as a last resort, is the focus of this updated overview. Unresolved clinical issues that remain, include the appropriate selection of patients that would benefit most from treatment with 225Ac-PSMA, treatment timing within the disease landscape, optimal dosing schedule, dosimetry, when and how to best use combination therapies and minimization and treatment of side effects, particularly that of xerostomia.
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Affiliation(s)
- Mariza Vorster
- Department of Nuclear Medicine at Inkosi Albert Luthuli Hospital, University of KwaZulu-Natal, KwaZulu-Natal, South Africa.
| | - Mike Sathekge
- Department of Nuclear Medicine, University of Pretoria & Steve Biko Academic Hospital, Private Bag X169, Pretoria 0001, South Africa; Nuclear Medicine Research Infrastructure (NuMeRI), Steve Biko Academic Hospital, Pretoria 0001, South Africa
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3
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Al-Ibraheem A, Al-Abdallat H, Al-Rashdan R, Abdlkadir AS, Sweedat DA, Alyasjeen SF, Ghesani M, Kairemo K, Buscombe JR. Navigating The Prostate Cancer Frontier: A Bibliometric and Altmetric Analysis of [ 225Ac]Ac-PSMA Therapy. Semin Nucl Med 2024; 54:603-611. [PMID: 38735824 DOI: 10.1053/j.semnuclmed.2024.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 04/20/2024] [Indexed: 05/14/2024]
Abstract
The main aim of this study was to evaluate the current state of bibliometric and altmetric research output of [225Ac]Ac-Prostate specific membrane antigen (PSMA) and its implications for prostate cancer (PC). Both PubMed and Scopus digital libraries were systematically explored to retrieve relevant data on the topic of interest. The study of various bibliometric and altmetric indices was facilitated through the use of Microsoft Excel, Stata (Version 17.0), and VOSviewer (Version 1.6) Softwares. The parameters included in this study comprised the examination of published articles, annual trends, countries, institutions, authors, journals, and co-occurring keywords. From 2014 to 2024, our study examined a total of 100 publications within the given domain. The studies that received the highest citations primarily centered on the crucial topic of metastatic castration-resistant prostate cancer, with a particular emphasis on evaluating the safety and effectiveness of [225Ac]Ac-PSMA therapy. Moreover, much scholarly inquiry has been devoted to examining the [225Ac]Ac-PSMA adverse effects. Three high prolific countries (namely, Germany, United States, and South Africa) dominated the research render in terms of publications and citations. Finally, A strong correlation was observed between altmetric score and citation number (P < 0.001). The observed surge in scholarly research output and altmetric indicators associated with [225Ac]Ac-PSMA signifies a shift in emphasis towards embracing alpha targeted therapy in PC.
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Affiliation(s)
- Akram Al-Ibraheem
- Department of Nuclear Medicine, King Hussein Cancer Center (KHCC), Amman, 11942, Jordan; School of Medicine, University of Jordan, Amman, 11942, Jordan.
| | | | - Rakan Al-Rashdan
- Department of Nuclear Medicine, King Hussein Cancer Center (KHCC), Amman, 11942, Jordan
| | - Ahmed Saad Abdlkadir
- Department of Nuclear Medicine, King Hussein Cancer Center (KHCC), Amman, 11942, Jordan
| | - Deya' Aldeen Sweedat
- Department of Nuclear Medicine, King Hussein Cancer Center (KHCC), Amman, 11942, Jordan
| | - Salem Fandi Alyasjeen
- Department of Nuclear Medicine, King Hussein Cancer Center (KHCC), Amman, 11942, Jordan
| | - Munir Ghesani
- Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Kalevi Kairemo
- Department of Molecular Radiotherapy and Nuclear Medicine, International Comprehensive Cancer Center Docrates, Saukonpaadenranta 2, FI-00180 Helsinki, Finland; Department of Nuclear Medicine, University of Texas, MD Anderson Cancer Center, Holcombe Blvd, 77030 Houston, TX
| | - John R Buscombe
- Department of Nuclear Medicine, Cambridge University Hospitals, Cambridge, United Kingdom
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4
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Watabe T, Kaneda-Nakashima K, Kadonaga Y, Ooe K, Sampunta T, Hirose N, Yin X, Haba H, Kon Y, Toyoshima A, Cardinale J, Giesel FL, Fukase K, Tomiyama N, Shirakami Y. Preclinical Evaluation of Biodistribution and Toxicity of [ 211At]PSMA-5 in Mice and Primates for the Targeted Alpha Therapy against Prostate Cancer. Int J Mol Sci 2024; 25:5667. [PMID: 38891856 PMCID: PMC11172375 DOI: 10.3390/ijms25115667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/15/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
Astatine (211At) is a cyclotron-produced alpha emitter with a physical half-life of 7.2 h. In our previous study, the 211At-labeled prostate-specific membrane antigen (PSMA) compound ([211At]PSMA-5) exhibited excellent tumor growth suppression in a xenograft model. We conducted preclinical biodistribution and toxicity studies for the first-in-human clinical trial. [211At]PSMA-5 was administered to both normal male ICR mice (n = 85) and cynomolgus monkeys (n = 2). The mice were divided into four groups for the toxicity study: 5 MBq/kg, 12 MBq/kg, 35 MBq/kg, and vehicle control, with follow-ups at 1 day (n = 10 per group) and 14 days (n = 5 per group). Monkeys were observed 24 h post-administration of [211At]PSMA-5 (9 MBq/kg). Blood tests and histopathological examinations were performed at the end of the observation period. Blood tests in mice indicated no significant myelosuppression or renal dysfunction. However, the monkeys displayed mild leukopenia 24 h post-administration. Despite the high accumulation in the kidneys and thyroid, histological analysis revealed no abnormalities. On day 1, dose-dependent single-cell necrosis/apoptosis was observed in the salivary glands of mice and intestinal tracts of both mice and monkeys. Additionally, tingible body macrophages in the spleen and lymph nodes indicated phagocytosis of apoptotic B lymphocytes. Cortical lymphopenia (2/10) in the thymus and a decrease in the bone marrow cells (9/10) were observed in the 35 MBq/kg group in mice. These changes were transient, with no irreversible toxicity observed in mice 14 days post-administration. This study identified no severe toxicities associated with [211At]PSMA-5, highlighting its potential as a next-generation targeted alpha therapy for prostate cancer. The sustainable production of 211At using a cyclotron supports its applicability for clinical use.
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Affiliation(s)
- Tadashi Watabe
- Department of Radiology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
- Institute for Radiation Sciences, Osaka University, Osaka 565-0871, Japan
| | - Kazuko Kaneda-Nakashima
- Institute for Radiation Sciences, Osaka University, Osaka 565-0871, Japan
- Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Graduate School of Science, Osaka University, Osaka 560-0043, Japan
| | - Yuichiro Kadonaga
- Institute for Radiation Sciences, Osaka University, Osaka 565-0871, Japan
| | - Kazuhiro Ooe
- Institute for Radiation Sciences, Osaka University, Osaka 565-0871, Japan
| | - Thosapol Sampunta
- Department of Radiology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Naoki Hirose
- Institute of Experimental Animal Sciences, Faculty of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Xiaojie Yin
- Nishina Center for Accelerator-Based Science, RIKEN, Wako 351-0198, Japan
| | - Hiromitsu Haba
- Nishina Center for Accelerator-Based Science, RIKEN, Wako 351-0198, Japan
| | - Yukiyoshi Kon
- Institute for Radiation Sciences, Osaka University, Osaka 565-0871, Japan
| | - Atsushi Toyoshima
- Institute for Radiation Sciences, Osaka University, Osaka 565-0871, Japan
| | - Jens Cardinale
- Department of Nuclear Medicine, Medical Faculty and University Hospital Duesseldorf, Heinrich-Heine-University Duesseldorf, 40225 Duesseldorf, Germany
| | - Frederik L. Giesel
- Institute for Radiation Sciences, Osaka University, Osaka 565-0871, Japan
- Department of Nuclear Medicine, Medical Faculty and University Hospital Duesseldorf, Heinrich-Heine-University Duesseldorf, 40225 Duesseldorf, Germany
| | - Koichi Fukase
- Institute for Radiation Sciences, Osaka University, Osaka 565-0871, Japan
- Department of Chemistry, Graduate School of Science, Osaka University, Osaka 560-0043, Japan
| | - Noriyuki Tomiyama
- Department of Radiology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
- Institute for Radiation Sciences, Osaka University, Osaka 565-0871, Japan
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5
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Oldan JD, Almaguel F, Voter AF, Duran A, Gafita A, Pomper MG, Hope TA, Rowe SP. PSMA-Targeted Radiopharmaceuticals for Prostate Cancer Diagnosis and Therapy. Cancer J 2024; 30:176-184. [PMID: 38753752 DOI: 10.1097/ppo.0000000000000718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
ABSTRACT Prostate cancer (PCa) is the most common noncutaneous malignancy in men. Until recent years, accurate imaging of men with newly diagnosed PCa, or recurrent or low-volume metastatic disease, was limited. Further, therapeutic options for men with advanced, metastatic, castration-resistant disease were increasingly limited as a result of increasing numbers of systemic therapies being combined in the upfront metastatic setting. The advent of urea-based, small-molecule inhibitors of prostate-specific membrane antigen (PSMA) has partially addressed those shortcomings in diagnosis and therapy of PCa. On the diagnostic side, there are multiple pivotal phase III trials with several different agents having demonstrated utility in the initial staging setting, with generally modest sensitivity but very high specificity for determining otherwise-occult pelvic nodal involvement. That latter statistic drives the utility of the scan by allowing imaging interpreters to read with very high sensitivity while maintaining a robust specificity. Other pivotal phase III trials have demonstrated high detection efficiency in patients with biochemical failure, with high positive predictive value at the lesion level, opening up possible new avenues of therapy such as metastasis-directed therapy. Beyond the diagnostic aspects of PSMA-targeted radiotracers, the same urea-based chemical scaffolds can be altered to deliver therapeutic isotopes to PCa cells that express PSMA. To date, one such agent, when combined with best standard-of-care therapy, has demonstrated an ability to improve overall survival, progression-free survival, and freedom from skeletal events relative to best standard-of-care therapy alone in men with metastatic, castration-resistant PCa who are post chemotherapy. Within the current milieu, there are a number of important future directions including the use of artificial intelligence to better leverage diagnostic findings, further medicinal chemistry refinements to the urea-based structure that may allow improved tumor targeting and decreased toxicities, and the incorporation of new radionuclides that may better balance efficacy with toxicities than those nuclides that are available.
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Affiliation(s)
- Jorge D Oldan
- From the Department of Radiology, University of North Carolina, Chapel Hill, NC
| | - Frankis Almaguel
- Department of Radiology, Loma Linda University School of Medicine, Loma Linda, CA
| | - Andrew F Voter
- The Russell H. Morgan Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Alfonso Duran
- Department of Radiology, Loma Linda University School of Medicine, Loma Linda, CA
| | - Andrei Gafita
- The Russell H. Morgan Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Martin G Pomper
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Thomas A Hope
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA
| | - Steven P Rowe
- From the Department of Radiology, University of North Carolina, Chapel Hill, NC
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Hooijman EL, Radchenko V, Ling SW, Konijnenberg M, Brabander T, Koolen SLW, de Blois E. Implementing Ac-225 labelled radiopharmaceuticals: practical considerations and (pre-)clinical perspectives. EJNMMI Radiopharm Chem 2024; 9:9. [PMID: 38319526 PMCID: PMC10847084 DOI: 10.1186/s41181-024-00239-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 01/25/2024] [Indexed: 02/07/2024] Open
Abstract
BACKGROUND In the past years, there has been a notable increase in interest regarding targeted alpha therapy using Ac-225, driven by the observed promising clinical anti-tumor effects. As the production and technology has advanced, the availability of Ac-225 is expected to increase in the near future, making the treatment available to patients worldwide. MAIN BODY Ac-225 can be labelled to different biological vectors, whereby the success of developing a radiopharmaceutical depends heavily on the labelling conditions, purity of the radionuclide source, chelator, and type of quenchers used to avoid radiolysis. Multiple (methodological) challenges need to be overcome when working with Ac-225; as alpha-emission detection is time consuming and highly geometry dependent, a gamma co-emission is used, but has to be in equilibrium with the mother-nuclide. Because of the high impact of alpha emitters in vivo it is highly recommended to cross-calibrate the Ac-225 measurements for used quality control (QC) techniques (radio-TLC, HPLC, HP-Ge detector, and gamma counter). More strict health physics regulations apply, as Ac-225 has a high toxicity, thereby limiting practical handling and quantities used for QC analysis. CONCLUSION This overview focuses specifically on the practical and methodological challenges when working with Ac-225 labelled radiopharmaceuticals, and underlines the required infrastructure and (detection) methods for the (pre-)clinical application.
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Affiliation(s)
- Eline L Hooijman
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 CN, Rotterdam, The Netherlands
- Department of Hospital Pharmacy, Erasmus MC, 3015 CN, Rotterdam, The Netherlands
| | - Valery Radchenko
- Life Sciences Division, TRIUMF, Vancouver, BC, V6T 2A3, Canada
- Chemistry Department, University of British Columbia, Vancouver, BC, V6T 1Z1, Canada
| | - Sui Wai Ling
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 CN, Rotterdam, The Netherlands
| | - Mark Konijnenberg
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 CN, Rotterdam, The Netherlands
| | - Tessa Brabander
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 CN, Rotterdam, The Netherlands
| | - Stijn L W Koolen
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 CN, Rotterdam, The Netherlands
- Department of Hospital Pharmacy, Erasmus MC, 3015 CN, Rotterdam, The Netherlands
- Department of Medical Oncology, Erasmus MC Cancer Institute, 3015 CN, Rotterdam, The Netherlands
| | - Erik de Blois
- Department of Radiology and Nuclear Medicine, Erasmus MC, 3015 CN, Rotterdam, The Netherlands.
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7
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Metebi A, Kauffman N, Xu L, Singh SK, Nayback C, Fan J, Johnson N, Diemer J, Grimm T, Zamiara M, Zinn KR. Pb-214/Bi-214-TCMC-Trastuzumab inhibited growth of ovarian cancer in preclinical mouse models. Front Chem 2024; 11:1322773. [PMID: 38333550 PMCID: PMC10850308 DOI: 10.3389/fchem.2023.1322773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/29/2023] [Indexed: 02/10/2024] Open
Abstract
Introduction: Better treatments for ovarian cancer are needed to eliminate residual peritoneal disease after initial debulking surgery. The present study evaluated Trastuzumab to deliver Pb-214/Bi-214 for targeted alpha therapy (TAT) for HER2-positive ovarian cancer in mouse models of residual disease. This study is the first report of TAT using a novel Radon-222 generator to produce short-lived Lead-214 (Pb-214, t1/2 = 26.8 min) in equilibrium with its daughter Bismuth-214 (Bi-214, t1/2 = 19.7 min); referred to as Pb-214/Bi-214. In this study, Pb-214/Bi-214-TCMC-Trastuzumab was tested. Methods: Trastuzumab and control IgG antibody were conjugated with TCMC chelator and radiolabeled with Pb-214/Bi-214 to yield Pb-214/Bi-214-TCMC-Trastuzumab and Pb-214/Bi-214-TCMC-IgG1. The decay of Pb-214/Bi-214 yielded α-particles for TAT. SKOV3 and OVAR3 human ovarian cancer cell lines were tested for HER2 levels. The effects of Pb-214/Bi-214-TCMC-Trastuzumab and appropriate controls were compared using clonogenic assays and in mice bearing peritoneal SKOV3 or OVCAR3 tumors. Mice control groups included untreated, Pb-214/Bi-214-TCMC-IgG1, and Trastuzumab only. Results and discussion: SKOV3 cells had 590,000 ± 5,500 HER2 receptors/cell compared with OVCAR3 cells at 7,900 ± 770. In vitro clonogenic assays with SKOV3 cells showed significantly reduced colony formation after Pb-214/Bi-214-TCMC-Trastuzumab treatment compared with controls. Nude mice bearing luciferase-positive SKOV3 or OVCAR3 tumors were treated with Pb-214/Bi-214-TCMC-Trastuzumab or appropriate controls. Two 0.74 MBq doses of Pb-214/Bi-214-TCMC-Trastuzumab significantly suppressed the growth of SKOV3 tumors for 60 days, without toxicity, compared with three control groups (untreated, Pb-214/Bi-214-TCMC-IgG1, or Trastuzumab only). Mice-bearing OVCAR3 tumors had effective therapy without toxicity with two 0.74 MBq doses of Pb-214/Bi-214-TCMC-trastuzumab or Pb-214/Bi-214-TCMC-IgG1. Together, these data indicated that Pb-214/Bi-214 from a Rn-222 generator system was successfully applied for TAT. Pb-214/Bi-214-TCMC-Trastuzumab was effective to treat mouse xenograft models. Advantages of Pb-214/Bi-214 from the novel generator systems include high purity, short half-life for fractioned therapy, and hourly availability from the Rn-222 generator system. This platform technology can be applied for a variety of cancer treatment strategies.
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Affiliation(s)
- Abdullah Metebi
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
- Comparative Medicine and Integrative Biology, Michigan State University, East Lansing, MI, United States
- Radiological Sciences Department, Taif University, Taif, Saudi Arabia
| | - Nathan Kauffman
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
- Comparative Medicine and Integrative Biology, Michigan State University, East Lansing, MI, United States
| | - Lu Xu
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
- Biomedical Engineering, Michigan State University, East Lansing, MI, United States
| | - Satyendra Kumar Singh
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
| | - Chelsea Nayback
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
- Comparative Medicine and Integrative Biology, Michigan State University, East Lansing, MI, United States
| | - Jinda Fan
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
- Department of Chemistry, Michigan State University, East Lansing, MI, United States
- Radiology, Michigan State University, East Lansing, MI, United States
| | | | | | | | | | - Kurt R. Zinn
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, United States
- Comparative Medicine and Integrative Biology, Michigan State University, East Lansing, MI, United States
- Biomedical Engineering, Michigan State University, East Lansing, MI, United States
- Radiology, Michigan State University, East Lansing, MI, United States
- Small Animal Clinical Sciences, Michigan State University, East Lansing, MI, United States
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8
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Almeida LS, Etchebehere ECSDC, García Megías I, Calapaquí Terán AK, Hadaschik B, Colletti PM, Herrmann K, Giammarile F, Delgado Bolton RC. PSMA Radioligand Therapy in Prostate Cancer: Where Are We and Where Are We Heading? Clin Nucl Med 2024; 49:45-55. [PMID: 37882758 DOI: 10.1097/rlu.0000000000004919] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
ABSTRACT Diagnosis and treatment of prostate cancer are complex and very challenging, being a major health care burden. The efficacy of radioligand therapy with prostate-specific membrane antigen agents has been proven beneficial in certain clinical indications. In this review, we describe management of prostate cancer patients according to current guidelines, especially focusing on the available clinical evidence for prostate-specific membrane antigen radioligand therapy.
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Affiliation(s)
| | | | - Irene García Megías
- Department of Diagnostic Imaging (Radiology) and Nuclear Medicine, University Hospital San Pedro and Centre for Biomedical Research of La Rioja (CIBIR), Logroño, La Rioja, Spain
| | | | | | - Patrick M Colletti
- Department of Radiology, University of Southern California, Los Angeles, CA, USA
| | | | - Francesco Giammarile
- Nuclear Medicine and Diagnostic Imaging Section, Division of Human Health, Department of Nuclear Sciences and Applications, International Atomic Energy Agency (IAEA), Vienna, Austria
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Jalloul W, Ghizdovat V, Stolniceanu CR, Ionescu T, Grierosu IC, Pavaleanu I, Moscalu M, Stefanescu C. Targeted Alpha Therapy: All We Need to Know about 225Ac's Physical Characteristics and Production as a Potential Theranostic Radionuclide. Pharmaceuticals (Basel) 2023; 16:1679. [PMID: 38139806 PMCID: PMC10747780 DOI: 10.3390/ph16121679] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/24/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023] Open
Abstract
The high energy of α emitters, and the strong linear energy transfer that goes along with it, lead to very efficient cell killing through DNA damage. Moreover, the degree of oxygenation and the cell cycle state have no impact on these effects. Therefore, α radioisotopes can offer a treatment choice to individuals who are not responding to β- or gamma-radiation therapy or chemotherapy drugs. Only a few α-particle emitters are suitable for targeted alpha therapy (TAT) and clinical applications. The majority of available clinical research involves 225Ac and its daughter nuclide 213Bi. Additionally, the 225Ac disintegration cascade generates γ decays that can be used in single-photon emission computed tomography (SPECT) imaging, expanding the potential theranostic applications in nuclear medicine. Despite the growing interest in applying 225Ac, the restricted global accessibility of this radioisotope makes it difficult to conduct extensive clinical trials for many radiopharmaceutical candidates. To boost the availability of 225Ac, along with its clinical and potential theranostic applications, this review attempts to highlight the fundamental physical properties of this α-particle-emitting isotope, as well as its existing and possible production methods.
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Affiliation(s)
- Wael Jalloul
- Department of Biophysics and Medical Physics-Nuclear Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- North East Regional Innovative Cluster for Structural and Molecular Imaging (Imago-Mol), 700115 Iasi, Romania
| | - Vlad Ghizdovat
- Department of Biophysics and Medical Physics-Nuclear Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- North East Regional Innovative Cluster for Structural and Molecular Imaging (Imago-Mol), 700115 Iasi, Romania
| | - Cati Raluca Stolniceanu
- Department of Biophysics and Medical Physics-Nuclear Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- North East Regional Innovative Cluster for Structural and Molecular Imaging (Imago-Mol), 700115 Iasi, Romania
| | - Teodor Ionescu
- Department of Morpho-Functional Sciences (Pathophysiology), “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Irena Cristina Grierosu
- Department of Biophysics and Medical Physics-Nuclear Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Ioana Pavaleanu
- Department of Mother and Child, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Mihaela Moscalu
- Department of Preventive Medicine and Interdisciplinarity, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Cipriana Stefanescu
- Department of Biophysics and Medical Physics-Nuclear Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- North East Regional Innovative Cluster for Structural and Molecular Imaging (Imago-Mol), 700115 Iasi, Romania
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