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Yoon H, Savoy EA, Mesbahi N, Hendricksen AT, March GL, Fulton MD, Backer BS, Berkman CE. A PSMA-targeted doxorubicin small-molecule drug conjugate. Bioorg Med Chem Lett 2024; 104:129712. [PMID: 38521177 PMCID: PMC11062396 DOI: 10.1016/j.bmcl.2024.129712] [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: 11/26/2023] [Revised: 02/22/2024] [Accepted: 03/20/2024] [Indexed: 03/25/2024]
Abstract
We developed a model small-molecule drug conjugate (SMDC) that employed doxorubicin as a representative chemotherapeutic targeted to the cell membrane biomarker PSMA (prostate-specific membrane antigen) expressed on prostate cancer cells. The strategy capitalized on the clatherin-mediated internalization of PSMA to facilitate the selective uptake and release of doxorubicin in the target cells. The SMDC was prepared and assessed for binding kinetics, plasma stability, cell toxicity, and specificity towards PSMA expressing prostate cancer cell lines. We observed high affinity of the SMDC for PSMA (IC50 5 nM) with irreversible binding, as well as specific effectiveness against PSMA(+) cells. These findings validated the strategy for a small molecule-based approach in targeted cancer therapy.
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Affiliation(s)
- Hosog Yoon
- Washington State University, Department of Chemistry Pullman, WA 99164-4630, United States
| | - Emily A Savoy
- Washington State University, Department of Chemistry Pullman, WA 99164-4630, United States
| | - Nooshin Mesbahi
- Washington State University, Department of Chemistry Pullman, WA 99164-4630, United States
| | - Aaron T Hendricksen
- Washington State University, Department of Chemistry Pullman, WA 99164-4630, United States
| | - Gabrielle L March
- Washington State University, Department of Chemistry Pullman, WA 99164-4630, United States
| | - Melody D Fulton
- Washington State University, Department of Chemistry Pullman, WA 99164-4630, United States
| | - Brian S Backer
- Washington State University, Department of Chemistry Pullman, WA 99164-4630, United States
| | - Clifford E Berkman
- Washington State University, Department of Chemistry Pullman, WA 99164-4630, United States.
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2
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Savoy EA, Olatunji FP, Mesbahi N, Ballard RK, Lovingier CL, Hendricksen AT, Fulton MD, Berkman CE. PSMA-targeted SMART molecules outfitted with SN38. Bioorg Med Chem Lett 2024; 101:129657. [PMID: 38360419 DOI: 10.1016/j.bmcl.2024.129657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/18/2024] [Accepted: 02/10/2024] [Indexed: 02/17/2024]
Abstract
Herein, we report the modular synthesis and evaluation of a prostate-specific membrane antigen (PSMA) targeted small molecule drug conjugate (SMDC) carrying the chemotherapeutic agent, SN38. Due to the fluorogenic properties of SN38, payload release kinetics from the platform was observed in buffers representing the pH conditions of systemic circulation and cellular internalization. It was found that this platform is stable with minimal payload release at physiological pH with most rapid payload release observed at pH values representing the endosome complex. We confirmed selective payload release and chemotherapeutic efficacy for PSMA(+) prostate cancer cells over PSMA(-) cells. These results demonstrate that chemotherapeutic agents with limited solubility can be conjugated to a water-soluble targeting and linker platform without attenuating efficacy.
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Affiliation(s)
- Emily A Savoy
- Washington State University, Department of Chemistry, Pullman, WA 99164-4630, United States
| | - Feyisola P Olatunji
- Washington State University, Department of Chemistry, Pullman, WA 99164-4630, United States
| | - Nooshin Mesbahi
- Washington State University, Department of Chemistry, Pullman, WA 99164-4630, United States
| | - Ryanne K Ballard
- Washington State University, Department of Chemistry, Pullman, WA 99164-4630, United States
| | - Christine L Lovingier
- Washington State University, Department of Chemistry, Pullman, WA 99164-4630, United States
| | - Aaron T Hendricksen
- Washington State University, Department of Chemistry, Pullman, WA 99164-4630, United States
| | - Melody D Fulton
- Washington State University, Department of Chemistry, Pullman, WA 99164-4630, United States
| | - Clifford E Berkman
- Washington State University, Department of Chemistry, Pullman, WA 99164-4630, United States.
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3
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Dhull A, Wei J, Pulukuri AJ, Rani A, Sharma R, Mesbahi N, Yoon H, Savoy EA, Xaivong Vi S, Goody KJ, Berkman CE, Wu BJ, Sharma A. PSMA-targeted dendrimer as an efficient anticancer drug delivery vehicle for prostate cancer. NANOSCALE 2024; 16:5634-5652. [PMID: 38440933 DOI: 10.1039/d3nr06520k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
Prostate cancer (PCa) is the second leading cause of cancer-related deaths among men in the United States. Although early-stage treatments exhibit promising 5-year survival rates, the treatment options for advanced stage disease are constrained, with short survival benefits due to the challenges associated with effective and selective drug delivery to PCa cells. Even though targeting Prostate Specific Membrane Antigen (PSMA) has been extensively explored and is clinically employed for imaging and radio-ligand therapy, the clinical success of PSMA-based approaches for targeted delivery of chemotherapies remains elusive. In this study, we combine a generation 4 hydroxy polyamidoamine dendrimer (PD) with irreversible PSMA ligand (CTT1298) to develop a PSMA-targeted nanoplatform (PD-CTT1298) for selective intracellular delivery of potent chemotherapeutics to PCa. PD-CTT1298-Cy5 exhibits a PSMA IC50 in the nanomolar range and demonstrates selective uptake in PSMA (+) PCa cells via PSMA mediated internalization. When systemically administered in a prostate tumor xenograft mouse model, PD-CTT1298-Cy5 selectively targets PSMA (+) tumors with significantly less accumulation in PSMA (-) tumors or upon blocking of the PSMA receptors. Moreover, the dendrimer clears rapidly from the off-target organs limiting systemic side-effects. Further, the conjugation of an anti-cancer agent, cabozantinib to the PSMA-targeted dendrimer translates to a significantly enhanced anti-proliferative activity in vitro compared to the free drug. These findings highlight the potential of PD-CTT1298 nanoplatform as a versatile approach for selective delivery of high payloads of potent chemotherapeutics to PCa, where dose related systemic side-effects are a major concern.
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Affiliation(s)
- Anubhav Dhull
- Department of Chemistry, College of Arts and Sciences, Washington State University, Pullman, WA, USA.
| | - Jing Wei
- Department of Pharmaceutical Sciences, College of Pharmacy and Pharmaceutical Sciences, Washington State University, Spokane, WA, USA
| | - Anunay James Pulukuri
- Department of Chemistry, College of Arts and Sciences, Washington State University, Pullman, WA, USA.
| | - Anu Rani
- Department of Chemistry, College of Arts and Sciences, Washington State University, Pullman, WA, USA.
| | - Rishi Sharma
- Department of Chemistry, College of Arts and Sciences, Washington State University, Pullman, WA, USA.
| | - Nooshin Mesbahi
- Department of Chemistry, College of Arts and Sciences, Washington State University, Pullman, WA, USA.
| | - Hosog Yoon
- Department of Chemistry, College of Arts and Sciences, Washington State University, Pullman, WA, USA.
| | - Emily A Savoy
- Department of Chemistry, College of Arts and Sciences, Washington State University, Pullman, WA, USA.
| | - Sylvia Xaivong Vi
- Department of Chemistry, College of Arts and Sciences, Washington State University, Pullman, WA, USA.
| | - Kenneth John Goody
- Department of Chemistry, College of Arts and Sciences, Washington State University, Pullman, WA, USA.
| | - Clifford E Berkman
- Department of Chemistry, College of Arts and Sciences, Washington State University, Pullman, WA, USA.
| | - Boyang Jason Wu
- Department of Pharmaceutical Sciences, College of Pharmacy and Pharmaceutical Sciences, Washington State University, Spokane, WA, USA
| | - Anjali Sharma
- Department of Chemistry, College of Arts and Sciences, Washington State University, Pullman, WA, USA.
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4
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Capasso G, Stefanucci A, Tolomeo A. A systematic review on the current status of PSMA-targeted imaging and radioligand therapy. Eur J Med Chem 2024; 263:115966. [PMID: 37992520 DOI: 10.1016/j.ejmech.2023.115966] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 11/24/2023]
Abstract
Prostate specific membrane antigen (PSMA) has been the subject of several studies in recent decades as a promising molecular target for prostate cancer (PCa), in fact it is considered an excellent molecular target for both PCa imaging (both for staging and follow-up), by means of PET/CT and for radioligand therapy. Its interesting molecular features have enabled the development of a new diagnostic and therapeutic approach for PCa, called "theranostics." Considering the abundance of PSMA-based probes that have appeared so far in the literature, the present work focuses the attention on radiopharmaceuticals with increasing clinical application, highlighting advantages and disadvantages in terms of different metabolization and excretion processes, pharmacokinetic, binding affinity and variable internalization rate, tumor-to-background ratio, residence times and toxicity profile.
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Affiliation(s)
- Giuseppe Capasso
- ITEL TELECOMUNICAZIONI S.r.l - Radiopharmaceutical Division, Italy.
| | - Azzurra Stefanucci
- Department of Pharmacy, Università degli Studi "G. d'Annunzio" Chieti, Pescara, Italy.
| | - Anna Tolomeo
- ITEL TELECOMUNICAZIONI S.r.l - Radiopharmaceutical Division, Italy.
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5
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Yarahmadi A, Sohan R, McAllister B, Caromile LA. Therapeutic potential of targeting mirnas to prostate cancer tumors: using psma as an active target. Mol Cell Oncol 2022; 9:2136476. [PMID: 36313480 PMCID: PMC9601542 DOI: 10.1080/23723556.2022.2136476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Prostate cancer (PC) is a commonly diagnosed malignancy in men and is associated with high mortality rates. Current treatments for PC include surgery, chemotherapy, and radiation therapy. However, recent advances in targeted delivery systems have yielded promising new approaches to PC treatment. As PC epithelial cells express high levels of prostate-specific membrane antigen (PSMA) on the cell surface, new drug conjugates focused on PSMA targeting have been developed. microRNAs (miRNAs) are small noncoding RNAs that regulate posttranscriptional gene expression in cells and show excellent possibilities for use in developing new therapeutics for PC. PSMA-targeted therapies based on a miRNA payload and that selectively target PC cells enhances therapeutic efficacy without eliciting damage to normal surrounding tissue. This review discusses the rationale for utilizing miRNAs to target PSMA, revealing their potential in therapeutic approaches to PC treatment. Different delivery systems for miRNAs and challenges to miRNA therapy are also explored.
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Affiliation(s)
- Amir Yarahmadi
- Vascular and Endovascular Surgery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Romoye Sohan
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT, USA
| | - Brenna McAllister
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT, USA
| | - Leslie A. Caromile
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT, USA,CONTACT Leslie A. Caromile Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT, USA
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6
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Krishnan MA, Pandit A, Sharma R, Chelvam V. Imaging of prostate cancer: optimizing affinity to prostate specific membrane antigen by spacer modifications in a tumor spheroid model. J Biomol Struct Dyn 2022; 40:9909-9930. [PMID: 34180367 DOI: 10.1080/07391102.2021.1936642] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Early diagnosis of prostate cancer (PCa) is crucial for staging, treatment and management of patients. Prostate specific membrane antigen (PSMA), highly over-expressed on PCa cells, is an excellent target for selective imaging of PCa. In recent years, various scaffolds have been explored as potential carriers to target diagnostic and therapeutic agents to PSMA+ tumour cells. Numerous fluorescent or radioisotope probes linked via a peptide linker have been developed that selectively binds to PCa cells. However, there are very few reports that examine the effects of chemical modifications in the peptide linker of an imaging probe on its affinity to PSMA protein. This report systematically investigates the impact of hydrophobic aromatic moieties in the peptide linker on PSMA affinity and in vitro performance. For this, a series of fluorescent bioconjugates 12-17 with different aromatic spacers were designed, synthesized, and their interactions within the PSMA pocket were first analysed in silico. Cell uptake studies were then performed for 12-17 in PSMA+ cell lines and 3D tumour models in vitro. Binding affinity values of 12-17 were found to be in the range of 36 to 157.9 nM, and 12 with three aromatic groups in the spacer exhibit highest affinity (KD = 36 nM) compared to 17 which is devoid of aromatic groups. These studies suggest that aromatic groups in the spacer region can significantly affect deep tissue imaging of fluorescent bioconjugates. Bioconjugate 12 can be a promising diagnostic tool, and conjugation to near-infrared agents would further its applications in deep-tissue imaging and surgery. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mena Asha Krishnan
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
| | - Amit Pandit
- Department of Chemistry, Indian Institute of Technology Indore, Indore, India
| | - Rajesh Sharma
- School of Pharmacy, Devi Ahilya University, Indore, India
| | - Venkatesh Chelvam
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India.,Department of Chemistry, Indian Institute of Technology Indore, Indore, India
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7
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Identification of alternative protein targets of glutamate-ureido-lysine associated with PSMA tracer uptake in prostate cancer cells. Proc Natl Acad Sci U S A 2022; 119:2025710119. [PMID: 35064078 PMCID: PMC8795759 DOI: 10.1073/pnas.2025710119] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/17/2021] [Indexed: 12/21/2022] Open
Abstract
Glutamate-ureido-lysine (GUL) probes are specific for prostate-specific membrane antigen (PSMA), overexpressed by most prostate cancers. This antigen can be lost as the cancer progresses. Recent reports have indicated that GUL probes can still identify these PSMA-negative tumors, indicating that the expression of alternative PSMA-like proteins may change during disease progression. In this study we identified two such candidate protein targets, NAALADaseL and mGluR8, by using a combined computational chemistry, data mining, molecular biology, radiochemistry, and synthetic chemistry approach. This work consequently prepares the groundwork for developing specific probes that can identify this progression, indicates directions for neuroendocrine prostate cancer research, and highlights the utility of a multidisciplinary approach for the rapid identification of unidentified proteins interacting with diagnostic probes. Prostate-specific membrane antigen (PSMA) is highly overexpressed in most prostate cancers and is clinically visualized using PSMA-specific probes incorporating glutamate-ureido-lysine (GUL). PSMA is effectively absent from certain high-mortality, treatment-resistant subsets of prostate cancers, such as neuroendocrine prostate cancer (NEPC); however, GUL-based PSMA tracers are still reported to have the potential to identify NEPC metastatic tumors. These probes may bind unknown proteins associated with PSMA-suppressed cancers. We have identified the up-regulation of PSMA-like aminopeptidase NAALADaseL and the metabotropic glutamate receptors (mGluRs) in PSMA-suppressed prostate cancers and find that their expression levels inversely correlate with PSMA expression and are associated with GUL-based radiotracer uptake. Furthermore, we identify that NAALADaseL and mGluR expression correlates with a unique cell cycle signature. This provides an opportunity for the future study of the biology of NEPC and potential therapeutic directions. Computationally predicting that GUL-based probes bind well to these targets, we designed and synthesized a fluorescent PSMA tracer to investigate these proteins in vitro, where it shows excellent affinity for PSMA, NAALADaseL, and specific mGluRs associated with poor prognosis.
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8
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DePalatis L, Martiniova L, de Almeida Graff T, Ravizzini G. Applications of PSMA-PET in tumors other than prostate cancer. Nucl Med Mol Imaging 2022. [DOI: 10.1016/b978-0-12-822960-6.00116-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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9
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Olatunji FP, Savoy EA, Panteah M, Mesbahi N, Abbasi A, Talley CM, Lovingier CL, Caromile LA, Berkman CE. Prostate-Specific Membrane Antigen-Targeted Turn-on Probe for Imaging Cargo Release in Prostate Cancer Cells. Bioconjug Chem 2021; 32:2386-2396. [PMID: 34699177 DOI: 10.1021/acs.bioconjchem.1c00435] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The tunable nature of phosphoramidate linkers enables broad applicability as pH-triggered controlled-release platforms, particularly in the context of antibody- and small-molecule-drug conjugates (ADCs and SMDCs), where there remains a need for new linker technology. Herein, we explored in-depth the release of turn-on fluorogenic payloads from a homoserinyl-based phosphoramidate acid-cleavable linker. Kinetics of payload release from the scaffold was observed in buffers representing the pH conditions of systemic circulation, early and late endosomes, and lysosomes. It was found that payload release takes place in two key consecutive steps: (1) P-N bond hydrolysis and (2) spacer immolation. These two steps were found to follow pseudo-first-order kinetics and had opposite dependencies on pH. P-N bond hydrolysis increased with decreasing pH, while spacer immolation was most rapid at physiological pH. Despite the contrasting release kinetics of these two steps, maximal payload release was observed at the mildly acidic pH (5.0-5.5), while minimal payload release occurred at physiological pH. We integrated this phosphoramidate-payload linker system into a PSMA-targeted fluorescent turn-on probe to study the intracellular trafficking and release of a fluorescent payload in PSMA-expressing prostate cancer cells. Results showed excellent turn-on and accumulation of the coumarin payload in the late endosomal and lysosomal compartments of these cells. The release properties of this linker mark it as an attractive alternative in the modular design of ADCs and SMDCs, which demand selective intracellular payload release triggered by the pH changes that accompany intracellular trafficking.
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Affiliation(s)
- Feyisola P Olatunji
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
| | - Emily A Savoy
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
| | - Mylan Panteah
- UCONN Health-Center for Vascular Biology, Farmington, Connecticut 06030-3501, United States
| | - Nooshin Mesbahi
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
| | - Armina Abbasi
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
| | - Cresencia M Talley
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
| | - Christine L Lovingier
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
| | - Leslie A Caromile
- UCONN Health-Center for Vascular Biology, Farmington, Connecticut 06030-3501, United States
| | - Clifford E Berkman
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
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10
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El Fakiri M, Geis NM, Ayada N, Eder M, Eder AC. PSMA-Targeting Radiopharmaceuticals for Prostate Cancer Therapy: Recent Developments and Future Perspectives. Cancers (Basel) 2021; 13:cancers13163967. [PMID: 34439121 PMCID: PMC8393521 DOI: 10.3390/cancers13163967] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 07/22/2021] [Accepted: 07/28/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary One of the most frequently diagnosed cancer in men is adenocarcinoma of the prostate. Once the disease is metastatic, only very limited treatment options are available, resulting in a very short median survival time of 13 months; however, this reality is gradually changing due to the discovery of prostate-specific membrane antigen (PSMA), a protein that is present in cancerous prostate tissue. Researchers have developed pharmaceuticals specific for PSMA, ranging from antibodies (mAb) to low-molecular weight molecules coupled to beta minus and alpha-emitting radionuclides for their use in targeted radionuclide therapy (TRT). TRT offers the possibility of selectively removing cancer tissue via the emission of radiation or radioactive particles within the tumour. In this article, the major milestones in PSMA ligand research and the therapeutic developments are summarised, together with a future perspective on the enhancement of current therapeutic approaches. Abstract Prostate cancer (PC) is the second most common cancer among men, with 1.3 million yearly cases worldwide. Among those cancer-afflicted men, 30% will develop metastases and some will progress into metastatic castration-resistant prostate cancer (mCRPC), which is associated with a poor prognosis and median survival time that ranges from nine to 13 months. Nevertheless, the discovery of prostate specific membrane antigen (PSMA), a marker overexpressed in the majority of prostatic cancerous tissue, revolutionised PC care. Ever since, PSMA-targeted radionuclide therapy has gained remarkable international visibility in translational oncology. Furthermore, on first clinical application, it has shown significant influence on therapeutic management and patient care in metastatic and hormone-refractory prostate cancer, a disease that previously had remained immedicable. In this article, we provide a general overview of the main milestones in the development of ligands for PSMA-targeted radionuclide therapy, ranging from the firstly developed monoclonal antibodies to the current state-of-the-art low molecular weight entities conjugated with various radionuclides, as well as potential future efforts related to PSMA-targeted radionuclide therapy.
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Affiliation(s)
- Mohamed El Fakiri
- Department of Nuclear Medicine, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany; (M.E.F.); (N.M.G.); (N.A.); (A.-C.E.)
- Division of Radiopharmaceutical Development, German Cancer Consortium (DKTK), Partner Site Freiburg, and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Nicolas M. Geis
- Department of Nuclear Medicine, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany; (M.E.F.); (N.M.G.); (N.A.); (A.-C.E.)
- Division of Radiopharmaceutical Development, German Cancer Consortium (DKTK), Partner Site Freiburg, and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Nawal Ayada
- Department of Nuclear Medicine, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany; (M.E.F.); (N.M.G.); (N.A.); (A.-C.E.)
- Division of Radiopharmaceutical Development, German Cancer Consortium (DKTK), Partner Site Freiburg, and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Matthias Eder
- Department of Nuclear Medicine, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany; (M.E.F.); (N.M.G.); (N.A.); (A.-C.E.)
- Division of Radiopharmaceutical Development, German Cancer Consortium (DKTK), Partner Site Freiburg, and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Correspondence: ; Tel.: +49-761-270-74220
| | - Ann-Christin Eder
- Department of Nuclear Medicine, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany; (M.E.F.); (N.M.G.); (N.A.); (A.-C.E.)
- Division of Radiopharmaceutical Development, German Cancer Consortium (DKTK), Partner Site Freiburg, and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
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11
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Siow A, Kowalczyk R, Brimble MA, Harris PWR. Evolution of Peptide-Based Prostate-Specific Membrane Antigen (PSMA) Inhibitors: An Approach to Novel Prostate Cancer Therapeutics. Curr Med Chem 2021; 28:3713-3752. [PMID: 33023429 DOI: 10.2174/0929867327666201006153847] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/24/2020] [Accepted: 08/30/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Prostate cancer is one of the most common cancers worldwide, with approximately 1.1 million cases diagnosed annually. The rapid development of molecular imaging has facilitated greater structural understanding, which can help formulate novel combinations of therapeutic regimens and more accurate diagnosis, avoiding unnecessary prostate biopsies. This accumulated knowledge also provides a greater understanding of the aggressive stages of the disease and tumor recurrence. Recently, much progress has been made on developing peptidomimetic-based inhibitors as promising candidates to effectively bind to the prostate- specific membrane antigen (PSMA), which is expressed by prostate cancer cells. OBJECTIVE In this review, recent advances covering small-molecule and peptide-based PSMA inhibitors will be extensively reviewed, providing a base for the rational design of future PSMA inhibitors. METHOD Herein, the literature on selected PSMA inhibitors that have been developed from 1996 to 2020 were reviewed, emphasizing recent synthetic advances and chemical strategies whilst highlighting therapeutic potential and drawbacks of each inhibitor. RESULTS Synthesized inhibitors presented in this review demonstrate the clinical application of certain PSMA inhibitors, exhibited in vitro and in vivo. CONCLUSION This review highlights the clinical potential of PSMA inhibitors, analyzing the advantages and setbacks of the chemical synthetic methodologies utilized, setting precedence for the discovery of novel PSMA inhibitors for future clinical applications.
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Affiliation(s)
- Andrew Siow
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Private Bag: 92019, Auckland 1010, New Zealand
| | - Renata Kowalczyk
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Private Bag: 92019, Auckland 1010, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Private Bag: 92019, Auckland 1010, New Zealand
| | - Paul W R Harris
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Private Bag: 92019, Auckland 1010, New Zealand
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12
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Pastorino S, Riondato M, Uccelli L, Giovacchini G, Giovannini E, Duce V, Ciarmiello A. Toward the Discovery and Development of PSMA Targeted Inhibitors for Nuclear Medicine Applications. Curr Radiopharm 2020; 13:63-79. [PMID: 31362683 PMCID: PMC7509769 DOI: 10.2174/1874471012666190729151540] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 07/15/2019] [Accepted: 07/15/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND The rising incidence rate of prostate cancer (PCa) has promoted the development of new diagnostic and therapeutic radiopharmaceuticals during the last decades. Promising improvements have been achieved in clinical practice using prostate specific membrane antigen (PSMA) labeled agents, including specific antibodies and small molecular weight inhibitors. Focusing on molecular docking studies, this review aims to highlight the progress in the design of PSMA targeted agents for a potential use in nuclear medicine. RESULTS Although the first development of radiopharmaceuticals able to specifically recognize PSMA was exclusively oriented to macromolecule protein structure such as radiolabeled monoclonal antibodies and derivatives, the isolation of the crystal structure of PSMA served as the trigger for the synthesis and the further evaluation of a variety of low molecular weight inhibitors. Among the nuclear imaging probes and radiotherapeutics that have been developed and tested till today, labeled Glutamate-ureido inhibitors are the most prevalent PSMA-targeting agents for nuclear medicine applications. CONCLUSION PSMA represents for researchers the most attractive target for the detection and treatment of patients affected by PCa using nuclear medicine modalities. [99mTc]MIP-1404 is considered the tracer of choice for SPECT imaging and [68Ga]PSMA-11 is the leading diagnostic for PET imaging by general consensus. [18F]DCFPyL and [18F]PSMA-1007 are clearly the emerging PET PSMA candidates for their great potential for a widespread commercial distribution. After paving the way with new imaging tools, academic and industrial R&Ds are now focusing on the development of PSMA inhibitors labeled with alpha or beta minus emitters for a theragnostic application.
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Affiliation(s)
- Sara Pastorino
- Nuclear Medicine Department, S. Andrea Hospital, Via Vittorio Veneto 197, 19124 La Spezia, Italy
| | - Mattia Riondato
- Nuclear Medicine Department, S. Andrea Hospital, Via Vittorio Veneto 197, 19124 La Spezia, Italy
| | - Licia Uccelli
- Morphology, Surgery and Experimental Medicine Department, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy.,Nuclear Medicine Unit, University Hospital, Via Aldo Moro 8, 44124 Ferrara, Italy
| | - Giampiero Giovacchini
- Nuclear Medicine Department, S. Andrea Hospital, Via Vittorio Veneto 197, 19124 La Spezia, Italy
| | - Elisabetta Giovannini
- Nuclear Medicine Department, S. Andrea Hospital, Via Vittorio Veneto 197, 19124 La Spezia, Italy
| | - Valerio Duce
- Nuclear Medicine Department, S. Andrea Hospital, Via Vittorio Veneto 197, 19124 La Spezia, Italy
| | - Andrea Ciarmiello
- Nuclear Medicine Department, S. Andrea Hospital, Via Vittorio Veneto 197, 19124 La Spezia, Italy
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13
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Cardinale J, Roscher M, Schäfer M, Geerlings M, Benešová M, Bauder-Wüst U, Remde Y, Eder M, Nováková Z, Motlová L, Barinka C, Giesel FL, Kopka K. Development of PSMA-1007-Related Series of 18F-Labeled Glu-Ureido-Type PSMA Inhibitors. J Med Chem 2020; 63:10897-10907. [PMID: 32852205 DOI: 10.1021/acs.jmedchem.9b01479] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In recent years, a number of drugs targeting the prostate-specific membrane antigen (PSMA) have become important tools in the diagnosis and treatment of prostate cancer. In the present work, we report on the synthesis and preclinical evaluation of a series of 18F-labeled PSMA ligands for diagnostic application based on the theragnostic ligand PSMA-617. By applying modifications to the linker structure, insight into the structure-activity relationship could be gained, highlighting the importance of hydrophilicity and stereoselectivity on interaction with PSMA and hence the biodistribution. Selected compounds were co-crystallized with the PSMA protein and analyzed by X-rays with mixed results. Among these, PSMA-1007 (compound 5) showed the best interaction with the PSMA protein. The respective radiotracer [18F]PSMA-1007 was translated into the clinic and is, in the meantime, subject of advanced clinical trials.
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Affiliation(s)
- Jens Cardinale
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center, INF 280, 69120 Heidelberg, Germany
| | - Mareike Roscher
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center, INF 280, 69120 Heidelberg, Germany
| | - Martin Schäfer
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center, INF 280, 69120 Heidelberg, Germany
| | - Max Geerlings
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center, INF 280, 69120 Heidelberg, Germany
| | - Martina Benešová
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center, INF 280, 69120 Heidelberg, Germany
| | - Ulrike Bauder-Wüst
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center, INF 280, 69120 Heidelberg, Germany
| | - Yvonne Remde
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center, INF 280, 69120 Heidelberg, Germany
| | - Matthias Eder
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center, INF 280, 69120 Heidelberg, Germany
| | - Zora Nováková
- Laboratory of Structural Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Lucia Motlová
- Laboratory of Structural Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Cyril Barinka
- Laboratory of Structural Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Frederik L Giesel
- Department of Nuclear Medicine, University Hospital Heidelberg, INF 400, 69120 Heidelberg, Germany
| | - Klaus Kopka
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
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14
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Quesada-Olarte JM, Allaf ME, Alvarez-Maestro M, Martínez-Piñeiro L. Molecular imaging of prostate cancer: Review of imaging agents, modalities, and current status. Actas Urol Esp 2020; 44:386-399. [PMID: 32709428 DOI: 10.1016/j.acuro.2019.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 12/17/2019] [Indexed: 11/17/2022]
Abstract
INTRODUCTION The clinical course of Prostate cancer (PCa) are markedly diverse, ranging from indolent to highly aggressive disseminated disease. Molecular imaging techniques are playing an increasing role in early PCa detection, staging and disease recurrence. There are some molecular imaging modalities, radiotracers agents and its performance are important in current clinical practice PCa. OBJECTIVE This review summarizes the latest information regarding molecular imaging of PCa and is designed to assist urologists with ordering and interpreting these modalities and different radiotracers for different patients. EVIDENCE ACQUISITION A PubMed-based literature search was conducted up to September 2019. We selected the most recent and relevant original articles, metanalysis and reviews that have provided relevant information to guide molecular imaging modalities and radiotracers use. EVIDENCE SYNTHESIS In this review, we discuss 3 main molecular imaging modalities and 7 radiotracer technologies available. CONCLUSIONS The use molecular imaging modalities and radiotracers has a unique role in biochemical recurrence and diagnosis of ganglionar and bone progression of PCa. In the present time, no one of these molecular imaging modalities can be recommended over the classical work-up of abdominopelvic CT scan and bone scan, and large-scale and multi-institutional studies are required to validate the efficacy and cost utility of these new technologies.
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Affiliation(s)
| | - M E Allaf
- Departamento de Urología, Johns Hopkins University Hospital, Baltimore, Estados Unidos
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15
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Rosenfeld L, Sananes A, Zur Y, Cohen S, Dhara K, Gelkop S, Ben Zeev E, Shahar A, Lobel L, Akabayov B, Arbely E, Papo N. Nanobodies Targeting Prostate-Specific Membrane Antigen for the Imaging and Therapy of Prostate Cancer. J Med Chem 2020; 63:7601-7615. [PMID: 32442375 PMCID: PMC7383930 DOI: 10.1021/acs.jmedchem.0c00418] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
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The repertoire of
methods for the detection and chemotherapeutic
treatment of prostate cancer (PCa) is currently limited. Prostate-specific
membrane antigen (PSMA) is overexpressed in PCa tumors and can be
exploited for both imaging and drug delivery. We developed and characterized
four nanobodies that present tight and specific binding and internalization
into PSMA+ cells and that accumulate specifically in PSMA+ tumors. We then conjugated one of these nanobodies to the
cytotoxic drug doxorubicin, and we show that the conjugate internalizes
specifically into PSMA+ cells, where the drug is released
and induces cytotoxic activity. In vivo studies show
that the extent of tumor growth inhibition is similar when mice are
treated with commercial doxorubicin and with a 42-fold lower amount
of the nanobody-conjugated doxorubicin, attesting to the efficacy
of the conjugated drug. These data highlight nanobodies as promising
agents for the imaging of PCa tumors and for the targeted delivery
of chemotherapeutic drugs.
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Affiliation(s)
- Lior Rosenfeld
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering and the National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Amiram Sananes
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering and the National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Yuval Zur
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering and the National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Shira Cohen
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Kalyan Dhara
- Department of Chemistry and the National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Sigal Gelkop
- Department of Virology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Efrat Ben Zeev
- The Nancy and Stephen Grand Israel National Center for Personalized Medicine, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Anat Shahar
- The National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Leslie Lobel
- Department of Virology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Barak Akabayov
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Eyal Arbely
- Department of Chemistry and the National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Niv Papo
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering and the National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
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16
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Kim K, Kwon H, Barinka C, Motlova L, Nam S, Choi D, Ha H, Nam H, Son SH, Minn I, Pomper MG, Yang X, Kutil Z, Byun Y. Novel β- and γ-Amino Acid-Derived Inhibitors of Prostate-Specific Membrane Antigen. J Med Chem 2020; 63:3261-3273. [PMID: 32097010 DOI: 10.1021/acs.jmedchem.9b02022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Prostate-specific membrane antigen (PSMA) is an excellent biomarker for the early diagnosis of prostate cancer progression and metastasis. The most promising PSMA-targeted agents in the clinical phase are based on the Lys-urea-Glu motif, in which Lys and Glu are α-(l)-amino acids. In this study, we aimed to determine the effect of β- and γ-amino acids in the S1 pocket on the binding affinity for PSMA. We synthesized and evaluated the β- and γ-amino acid analogues with (S)- or (R)-configuration with keeping α-(l)-Glu as the S1'-binding pharmacophore. The structure-activity relationship studies identified that compound 13c, a β-amino acid analogue with (R)-configuration, exhibited the most potent PSMA inhibitory activity with an IC50 value of 3.97 nM. The X-ray crystal structure of PSMA in complex with 13c provided a mechanistic basis for the stereochemical preference of PSMA, which can guide the development of future PSMA inhibitors.
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Affiliation(s)
- Kyul Kim
- College of Pharmacy, Korea University, 2511 Sejong-ro, Jochiwon-eup, Sejong 30019, Republic of Korea
| | - Hongmok Kwon
- College of Pharmacy, Korea University, 2511 Sejong-ro, Jochiwon-eup, Sejong 30019, Republic of Korea
| | - Cyril Barinka
- Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Lucia Motlova
- Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - SangJin Nam
- College of Pharmacy, Korea University, 2511 Sejong-ro, Jochiwon-eup, Sejong 30019, Republic of Korea
| | - Doyoung Choi
- College of Pharmacy, Korea University, 2511 Sejong-ro, Jochiwon-eup, Sejong 30019, Republic of Korea
| | - Hyunsoo Ha
- College of Pharmacy, Korea University, 2511 Sejong-ro, Jochiwon-eup, Sejong 30019, Republic of Korea
| | - Hwanhee Nam
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, 21205 Maryland, United States
| | - Sang-Hyun Son
- College of Pharmacy, Korea University, 2511 Sejong-ro, Jochiwon-eup, Sejong 30019, Republic of Korea
| | - Il Minn
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, 21205 Maryland, United States
| | - Martin G Pomper
- Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, 21205 Maryland, United States
| | - Xing Yang
- Department of Nuclear Medicine, Peking University First Hospital, Beijing 100034 China
| | - Zsofia Kutil
- Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Youngjoo Byun
- College of Pharmacy, Korea University, 2511 Sejong-ro, Jochiwon-eup, Sejong 30019, Republic of Korea.,Biomedical Research Center, Korea University Guro Hospital, 148 Gurodong-ro, Guro-gu, Seoul 08308, Republic of Korea
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17
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Werner RA, Derlin T, Lapa C, Sheikbahaei S, Higuchi T, Giesel FL, Behr S, Drzezga A, Kimura H, Buck AK, Bengel FM, Pomper MG, Gorin MA, Rowe SP. 18F-Labeled, PSMA-Targeted Radiotracers: Leveraging the Advantages of Radiofluorination for Prostate Cancer Molecular Imaging. Theranostics 2020; 10:1-16. [PMID: 31903102 PMCID: PMC6929634 DOI: 10.7150/thno.37894] [Citation(s) in RCA: 104] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 09/11/2019] [Indexed: 12/22/2022] Open
Abstract
Prostate-specific membrane antigen (PSMA)-targeted PET imaging for prostate cancer with 68Ga-labeled compounds has rapidly become adopted as part of routine clinical care in many parts of the world. However, recent years have witnessed the start of a shift from 68Ga- to 18F-labeled PSMA-targeted compounds. The latter imaging agents have several key advantages, which may lay the groundwork for an even more widespread adoption into the clinic. First, facilitated delivery from distant suppliers expands the availability of PET radiopharmaceuticals in smaller hospitals operating a PET center but lacking the patient volume to justify an onsite 68Ge/68Ga generator. Thus, such an approach meets the increasing demand for PSMA-targeted PET imaging in areas with lower population density and may even lead to cost-savings compared to in-house production. Moreover, 18F-labeled radiotracers have a higher positron yield and lower positron energy, which in turn decreases image noise, improves contrast resolution, and maximizes the likelihood of detecting subtle lesions. In addition, the longer half-life of 110 min allows for improved delayed imaging protocols and flexibility in study design, which may further increase diagnostic accuracy. Moreover, such compounds can be distributed to sites which are not allowed to produce radiotracers on-site due to regulatory issues or to centers without access to a cyclotron. In light of these advantageous characteristics, 18F-labeled PSMA-targeted PET radiotracers may play an important role in both optimizing this transformative imaging modality and making it widely available. We have aimed to provide a concise overview of emerging 18F-labeled PSMA-targeted radiotracers undergoing active clinical development. Given the wide array of available radiotracers, comparative studies are needed to firmly establish the role of the available 18F-labeled compounds in the field of molecular PCa imaging, preferably in different clinical scenarios.
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Affiliation(s)
- Rudolf A. Werner
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Thorsten Derlin
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
| | - Constantin Lapa
- Department of Nuclear Medicine, University Hospital Würzburg, Germany
| | - Sara Sheikbahaei
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Takahiro Higuchi
- Department of Nuclear Medicine, University Hospital Würzburg, Germany
- Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Frederik L. Giesel
- Department of Nuclear Medicine, University Hospital Heidelberg, INF 400, 69120 Heidelberg, Germany
| | - Spencer Behr
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA
| | - Alexander Drzezga
- Department of Nuclear Medicine, University Hospital Cologne, Germany
| | - Hiroyuki Kimura
- Department of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University, Kyoto, Japan
| | - Andreas K. Buck
- Department of Nuclear Medicine, University Hospital Würzburg, Germany
| | - Frank M. Bengel
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
| | - Martin G. Pomper
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Michael A. Gorin
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Steven P. Rowe
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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18
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Synthesis and biological evaluation of PSMA-targeting paclitaxel conjugates. Bioorg Med Chem Lett 2019; 29:2229-2235. [DOI: 10.1016/j.bmcl.2019.06.035] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 06/17/2019] [Accepted: 06/19/2019] [Indexed: 12/17/2022]
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19
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Behr SC, Aggarwal R, VanBrocklin HF, Flavell RR, Gao K, Small EJ, Blecha J, Jivan S, Hope TA, Simko JP, Kurhanewicz J, Noworolski SM, Korn NJ, De Los Santos R, Cooperberg MR, Carroll PR, Nguyen HG, Greene KL, Langton-Webster B, Berkman CE, Seo Y. Phase I Study of CTT1057, an 18F-Labeled Imaging Agent with Phosphoramidate Core Targeting Prostate-Specific Membrane Antigen in Prostate Cancer. J Nucl Med 2019; 60:910-916. [PMID: 30464040 PMCID: PMC6604687 DOI: 10.2967/jnumed.118.220715] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 11/13/2018] [Indexed: 11/16/2022] Open
Abstract
Agents targeting prostate-specific membrane antigen (PSMA) comprise a rapidly emerging class of radiopharmaceuticals for diagnostic imaging of prostate cancer. Unlike most other PSMA agents with a urea backbone, CTT1057 is based on a phosphoramidate scaffold that irreversibly binds to PSMA. We conducted a first-in-humans phase I study of CTT1057 in patients with localized and metastatic prostate cancer. Methods: Two patient cohorts were recruited. Cohort A patients had biopsy-proven localized prostate cancer preceding radical prostatectomy, and cohort B patients had metastatic castration-resistant prostate cancer. Cohort A patients were imaged at multiple time points after intravenous injection with 362 ± 8 MBq of CTT1057 to evaluate the kinetics of CTT1057 and estimate radiation dose profiles. Mean organ-absorbed doses and effective doses were calculated. CTT1057 uptake in the prostate gland and regional lymph nodes was correlated with pathology, PSMA staining, and the results of conventional imaging. In cohort B, patients were imaged 60-120 min after injection of CTT1057. PET images were assessed for overall image quality, and areas of abnormal uptake were contrasted with conventional imaging. Results: In cohort A (n = 5), the average total effective dose was 0.023 mSv/MBq. The kidneys exhibited the highest absorbed dose, 0.067 mGy/MBq. The absorbed dose of the salivary glands was 0.015 mGy/MBq. For cohort B (n = 15), CTT1057 PET detected 97 metastatic lesions, and 44 of 56 bone metastases detected on CTT1057 PET (78.5%) were also detectable on bone scanning. Eight of 32 lymph nodes positive on CTT1057 PET (25%) were enlarged by size criteria on CT. Conclusion: CTT1057 is a promising novel phosphoramidate PSMA-targeting 18F-labeled PET radiopharmaceutical that demonstrates similar biodistribution to urea-based PSMA-targeted agents, with lower exposure to the kidneys and salivary glands. Metastatic lesions are detected with higher sensitivity on CTT1057 imaging than on conventional imaging. Further prospective studies with CTT1057 are warranted to elucidate its role in cancer imaging.
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Affiliation(s)
- Spencer C Behr
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Rahul Aggarwal
- Department of Medicine, University of California, San Francisco, San Francisco, California
| | - Henry F VanBrocklin
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Robert R Flavell
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Kenneth Gao
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Eric J Small
- Department of Medicine, University of California, San Francisco, San Francisco, California
- Department of Urology, University of California, San Francisco, San Francisco, California
| | - Joseph Blecha
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Salma Jivan
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Thomas A Hope
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Jeffry P Simko
- Department of Pathology, University of California, San Francisco, San Francisco, California; and
| | - John Kurhanewicz
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Susan M Noworolski
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Natalie J Korn
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
| | - Romelyn De Los Santos
- Department of Pathology, University of California, San Francisco, San Francisco, California; and
| | - Matthew R Cooperberg
- Department of Urology, University of California, San Francisco, San Francisco, California
| | - Peter R Carroll
- Department of Urology, University of California, San Francisco, San Francisco, California
| | - Hao G Nguyen
- Department of Urology, University of California, San Francisco, San Francisco, California
| | - Kirsten L Greene
- Department of Urology, University of California, San Francisco, San Francisco, California
| | | | | | - Youngho Seo
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California
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20
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Ivanenkov YA, Machulkin AE, Garanina AS, Skvortsov DA, Uspenskaya AA, Deyneka EV, Trofimenko AV, Beloglazkina EK, Zyk NV, Koteliansky VE, Bezrukov DS, Aladinskaya AV, Vorobyeva NS, Puchinina MM, Riabykh GK, Sofronova AA, Malyshev AS, Majouga AG. Synthesis and biological evaluation of Doxorubicin-containing conjugate targeting PSMA. Bioorg Med Chem Lett 2019; 29:1246-1255. [DOI: 10.1016/j.bmcl.2019.01.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/15/2019] [Accepted: 01/30/2019] [Indexed: 12/19/2022]
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21
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Abstract
As described in more detail in other contributions in this issue of Seminars in Nuclear Medicine, prostate-specific membrane antigen (PSMA) has become one of the most promising molecular targets in nuclear medicine. Due to its overexpression on prostate cancer cells in proportion to the stage and grade of tumour progression, especially in androgen-independent, advanced and metastatic disease, various tracers for the detection and treatment of prostate cancer by means of radioligand imaging, radioligand therapy or radioguided surgery have been developed and transferred to clinical applications. Even though monoclonal antibodies were investigated and introduced as first PSMA-targeted probes, the inherent advantage of fast tumour uptake and rapid excretion of small molecules has shifted the research focus during the last decade to low molecular weight inhibitors with high affinity to PSMA, such as [18F]FDCFPyL, [18F]PSMA-1007, [68Ga]PSMA-HBED, [177Lu]PSMA-617, [177Lu]PSMA-I&T, [99mTc]MIP-1404 or [99mTc]PSMA I&S, to mention only a few. Due to the plethora of such PSMA probes described during the last years, this review aims to give an overview over the specific characteristics of those radiopharmaceuticals that have already found widespread clinical application. In addition, recently introduced concepts such as PSMA-tracers with increased plasma protein binding, are discussed.
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Affiliation(s)
- Hans-Jürgen Wester
- Chair of Pharmaceutical Radiochemistry, Walther-Meissner-Strasse 3, 85748 Garching, Germany.
| | - Margret Schottelius
- Chair of Pharmaceutical Radiochemistry, Walther-Meissner-Strasse 3, 85748 Garching, Germany
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22
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Diao W, Cai H, Chen L, Jin X, Liao X, Jia Z. Recent Advances in Prostate-Specific Membrane Antigen-Based Radiopharmaceuticals. Curr Top Med Chem 2019; 19:33-56. [PMID: 30706785 DOI: 10.2174/1568026619666190201100739] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 12/13/2018] [Accepted: 12/15/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND Prostate cancer (PCa) is the most common sex-related malignancy with high mortality in men worldwide. Prostate-specific membrane antigen (PSMA) is overexpressed on the surface of most prostate tumor cells and considered a valuable target for both diagnosis and therapy of prostate cancer. A series of radiolabeled agents have been developed based on the featured PSMA ligands in the previous decade and have demonstrated promising outcomes in clinical research of primary and recurrent PCa. Furthermore, the inspiring response and safety of lutetium-177-PSMA-617 (177Lu-PSMA-617) radiotherapy represent the potential for expanded therapeutic options for metastatic castration-resistant PCa. Retrospective cohort studies have revealed that radiolabeled PSMA agents are the mainstays of the current success, especially in detecting prostate cancer with metastasis and biochemical recurrence. OBJECTIVE This review is intended to present a comprehensive overview of the current literature on PSMA ligand-based agents for both radionuclide imaging and therapeutic approaches, with a focus on those that have been clinically adopted. CONCLUSION PSMA-based diagnosis and therapy hold great promise for improving the clinical management of prostate cancer.
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Affiliation(s)
- Wei Diao
- Department of Nuclear Medicine, West China Hospital, Sichuan University, 610041, Chengdu, China
| | - Huawei Cai
- Department of Nuclear Medicine, West China Hospital, Sichuan University, 610041, Chengdu, China
| | - Lihong Chen
- Department of Biochemistry & Molecular Biology, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610041, China
| | - Xi Jin
- Institute of Urology, Department of Urology, West China Hospital, Sichuan University, 610041, Chengdu, China
| | - Xinyang Liao
- Institute of Urology, Department of Urology, West China Hospital, Sichuan University, 610041, Chengdu, China
| | - Zhiyun Jia
- Department of Nuclear Medicine, West China Hospital, Sichuan University, 610041, Chengdu, China
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23
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Rowe SP, Gorin MA, Pomper MG. Imaging of Prostate-Specific Membrane Antigen with Small-Molecule PET Radiotracers: From the Bench to Advanced Clinical Applications. Annu Rev Med 2019; 70:461-477. [DOI: 10.1146/annurev-med-062117-073027] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In recent years, small-molecule inhibitors of prostate-specific membrane antigen (PSMA) labeled with radionuclides that allow for positron emission tomography (PET) imaging have been extensively studied in many clinical contexts in men with prostate cancer (PCa). The high sensitivity and specificity of these agents for identifying sites of PCa has quickly led to their widespread adoption as a de facto clinical standard of care throughout much of the world. PSMA-targeted PET radiotracers have been particularly well-studied in preoperatively staging men with high-risk PCa, evaluating biochemical recurrence following definitive therapy, and guiding metastasis-directed therapy in patients suspected of having oligorecurrent/oligometastatic disease. Furthermore, the expression of PSMA on the tumor neovasculature of many nonprostate malignancies has enabled a burgeoning subfield concentrated on delineating the potential utility of PSMA-targeted PET agents for imaging other cancers. In this review, we highlight the preclinical development of key small molecules that are now being clinically utilized for PCa imaging, discuss the roles of PSMA-targeted agents in guiding patient management, and consider the role these compounds may play in imaging nonprostate cancers.
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Affiliation(s)
- Steven P. Rowe
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA;,
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
| | - Michael A. Gorin
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA;,
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
| | - Martin G. Pomper
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA;,
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
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Kwon YD, Oh JM, La MT, Chung HJ, Lee SJ, Chun S, Lee SH, Jeong BH, Kim HK. Synthesis and Evaluation of Multifunctional Fluorescent Inhibitors with Synergistic Interaction of Prostate-Specific Membrane Antigen and Hypoxia for Prostate Cancer. Bioconjug Chem 2018; 30:90-100. [DOI: 10.1021/acs.bioconjchem.8b00767] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Young-Do Kwon
- Department of Nuclear Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro,
Seodaemun-gu, Seoul 03722, Republic of Korea
- Department of Nuclear Medicine, Molecular Imaging & Therapeutic Medicine Research Center, Chonbuk National University Medical School and Hospital, 20 Geonji-ro, Deokjin-gu, Jeonju 54907, Republic of Korea
| | - Jung-Mi Oh
- Department of Physiology, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju 54907, Republic of Korea
| | - Minh Thanh La
- Department of Nuclear Medicine, Molecular Imaging & Therapeutic Medicine Research Center, Chonbuk National University Medical School and Hospital, 20 Geonji-ro, Deokjin-gu, Jeonju 54907, Republic of Korea
| | - Hea-Jong Chung
- Department of Biomedical Sciences and Institute for Medical Science, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju 54907, Republic of Korea
| | - Sun Joo Lee
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, 80 Cheombok-ro, Dong-gu, Daegu 41061, Republic of Korea
| | - Sungkun Chun
- Department of Physiology, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju 54907, Republic of Korea
| | - Sun-Hwa Lee
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, 80 Cheombok-ro, Dong-gu, Daegu 41061, Republic of Korea
| | - Byung-Hoon Jeong
- Korea Zoonosis Research Institute, Chonbuk National University, 820-120 Hana-ro, Iksan 54531, Republic of Korea
| | - Hee-Kwon Kim
- Department of Nuclear Medicine, Molecular Imaging & Therapeutic Medicine Research Center, Chonbuk National University Medical School and Hospital, 20 Geonji-ro, Deokjin-gu, Jeonju 54907, Republic of Korea
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical
Research Institute of Chonbuk National University Hospital, 20 Geonji-ro, Deokjin-gu, Jeonju 54907, Republic of Korea
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Bouvet V, Wuest M, Bailey JJ, Bergman C, Janzen N, Valliant JF, Wuest F. Targeting Prostate-Specific Membrane Antigen (PSMA) with F-18-Labeled Compounds: the Influence of Prosthetic Groups on Tumor Uptake and Clearance Profile. Mol Imaging Biol 2018. [PMID: 28639122 DOI: 10.1007/s11307-017-1102-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE Prostate-specific membrane antigen (PSMA) is an important biomarker expressed in the majority of prostate cancers. The favorable positron emission tomography (PET) imaging profile of the PSMA imaging agent 2-(3-(1-carboxy-5-[(6-[18F]fluoro-pyridine-3-carbonyl)-amino]-pentyl)-ureido)-pentane-dioic acid [18F]DCFPyL in preclinical prostate cancer models and in prostate cancer patients stimulated the development and validation of other fluorine-containing PSMA inhibitors to further enhance pharmacokinetics and simplify production methods. Here, we describe the synthesis and radiopharmacological evaluation of various F-18-labeled PSMA inhibitors which were prepared through different prosthetic group chemistry strategies. PROCEDURES Prosthetic groups N-succinimidyl-4-[18F]fluorobenzoate ([18F]SFB), 4-[18F]fluorobenzaldehyde, and 2-deoxy-2-[18F]fluoro-D-glucose ([18F]FDG) were used for bioconjugation reactions to PSMA-binding lysine-urea-glutamate scaffold via acylation and oxime formation. All fluorine-containing PSMA inhibitors were tested for their PSMA inhibitory potency in an in vitro competitive binding assay in comparison to an established reference compound [125I]TAAG-PSMA. Tumor uptake and clearance profiles of three F-18-labeled PSMA inhibitors ([18F]4, [18F]7, and [18F]8) were studied with dynamic PET imaging using LNCaP tumor-bearing mice. RESULTS F-18-labeled PSMA inhibitors were synthesized in 32-69 % radiochemical yields using (1) acylation reaction at the primary amino group of the lysine residue with [18F]SFB and (2) oxime formation with 4-[18F]fluorobenzaldehyde and [18F]FDG using the respective aminooxy-functionalized lysine residue. Compound 7 displayed an IC50 value of 6 nM reflecting very high affinity for PSMA. Compounds 4 and 8 showed IC50 values of 13 and 62 nM, respectively. The IC50 value of reference compound DCFPyL was 13 nM. Dynamic PET imaging revealed the following SUV60min for radiotracer uptake in PSMA(+) LNCaP tumors: 0.98 ([18F]DCFPyL), 2.11 ([18F]7), 0.40 ([18F]4), and 0.19 ([18F]8). CONCLUSION The observed tumor uptake and clearance profiles demonstrate the importance of the selected prosthetic group on the pharmacokinetic profile of analyzed PSMA-targeting radiotracers. Radiotracer [18F]7 displayed the highest uptake and retention in LNCaP tumors, which exceeded uptake values of reference compound [18F]DCFPyL by more than 100 %. Despite the higher kidney and liver uptake and retention of compound [18F]7, the simple radiosynthesis and the exceptionally high tumor uptake (SUV60min 2.11) and retention make radiotracer [18F]7 an interesting alternative to radiotracer [18F]DCFPyL for PET imaging of PSMA in prostate cancer.
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Affiliation(s)
- Vincent Bouvet
- Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, AB, T6G 2X4, Canada
| | - Melinda Wuest
- Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, AB, T6G 2X4, Canada
| | - Justin J Bailey
- Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, AB, T6G 2X4, Canada
| | - Cody Bergman
- Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, AB, T6G 2X4, Canada
| | - Nancy Janzen
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main St., Hamilton, ON, L8S 4K1, Canada
| | - John F Valliant
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main St., Hamilton, ON, L8S 4K1, Canada
| | - Frank Wuest
- Department of Oncology, University of Alberta, Cross Cancer Institute, 11560 University Avenue, Edmonton, AB, T6G 2X4, Canada.
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Imaging Prostate Cancer With Prostate-Specific Membrane Antigen PET/CT and PET/MRI: Current and Future Applications. AJR Am J Roentgenol 2018; 211:286-294. [PMID: 29949419 DOI: 10.2214/ajr.18.19957] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE The purpose of this article is to describe the large number of radiotracers being evaluated for prostate-specific membrane antigen (PSMA) PET, which is becoming a central tool in the staging of prostate cancer. CONCLUSION PSMA PET is a highly promising modality for the staging of prostate cancer because of its higher detection rate compared with that of conventional imaging. Both PET/CT and PET/MRI offer benefits with PSMA radiotracers, and PSMA PET findings frequently lead to changes in management. It is imperative that subsequent treatment changes be evaluated to show improved outcomes. PSMA PET also has potential applications, including patient selection for PSMA-based radioligand therapy and evaluation of treatment response.
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Moon SH, Hong MK, Kim YJ, Lee YS, Lee DS, Chung JK, Jeong JM. Development of a Ga-68 labeled PET tracer with short linker for prostate-specific membrane antigen (PSMA) targeting. Bioorg Med Chem 2018; 26:2501-2507. [DOI: 10.1016/j.bmc.2018.04.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/28/2018] [Accepted: 04/04/2018] [Indexed: 12/11/2022]
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Kwon YD, Chung HJ, Lee SJ, Lee SH, Jeong BH, Kim HK. Synthesis of novel multivalent fluorescent inhibitors with high affinity to prostate cancer and their biological evaluation. Bioorg Med Chem Lett 2018; 28:572-576. [DOI: 10.1016/j.bmcl.2018.01.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/17/2018] [Accepted: 01/23/2018] [Indexed: 12/27/2022]
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Nedrow JR, Latoche JD, Day KE, Modi J, Ganguly T, Zeng D, Kurland BF, Berkman CE, Anderson CJ. Targeting PSMA with a Cu-64 Labeled Phosphoramidate Inhibitor for PET/CT Imaging of Variant PSMA-Expressing Xenografts in Mouse Models of Prostate Cancer. Mol Imaging Biol 2017; 18:402-10. [PMID: 26552656 DOI: 10.1007/s11307-015-0908-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
PURPOSE Prostate-specific membrane antigen (PSMA) is highly up-regulated in prostate tumor cells, providing an ideal target for imaging applications of prostate cancer. CTT-1297 (IC50 = 27 nM) is an irreversible phosphoramidate inhibitor of PSMA that has been conjugated to the CB-TE1K1P chelator for incorporation of Cu-64. The resulting positron emission tomography (PET) agent, [(64)Cu]ABN-1, was evaluated for selective uptake both in vitro and in vivo in PSMA-positive cells of varying expression levels. The focus of this study was to assess the ability of [(64)Cu]ABN-1 to detect and distinguish varying levels of PSMA in a panel of prostate tumor-bearing mouse models. PROCEDURES CTT-1297 was conjugated to the CB-TE1K1P chelator using click chemistry and radiolabeled with Cu-64. Internalization and binding affinity of [(64)Cu]ABN-1 was evaluated in the following cell lines having varying levels of PSMA expression: LNCaP late-passage > LNCaP early passage ≈ C4-2B > CWR22rv1 and PSMA-negative PC-3 cells. PET/X-ray computed tomography imaging was performed in NCr nude mice with subcutaneous tumors of the variant PSMA-expressing cell lines. RESULTS [(64)Cu]ABN-1 demonstrated excellent uptake in PSMA-positive cells in vitro, with ∼80 % internalization at 4 h for each PSMA-positive cell line with uptake (fmol/mg) correlating to PSMA expression levels. The imaging data indicated significant tumor uptake in all models. The biodistribution for late-passage LNCaP (highest PSMA expression) demonstrated the highest specific uptake of [(64)Cu]ABN-1 with tumor-to-muscle and tumor-to-blood ratios of 30 ± 11 and 21 ± 7, respectively, at 24 h post-injection. [(64)Cu]ABN-1 cleared through all tissues except for PSMA-positive kidneys. CONCLUSION [(64)Cu]ABN-1 demonstrated selective uptake in PSMA-positive cells and tumors, which correlated to the level of PSMA expression. The data reported herein suggest that [(64)Cu]ABN-1 will selectively target and image variant PSMA expression and in the future will serve as a non-invasive method to follow the progression of prostate cancer in men.
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Affiliation(s)
- Jessie R Nedrow
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA, 15219, USA
| | - Joseph D Latoche
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA, 15219, USA
| | - Kathryn E Day
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA, 15219, USA
| | - Jalpa Modi
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA, 15219, USA
| | - Tanushree Ganguly
- Department of Chemistry, Washington State University, Pullman, WA, USA
| | - Dexing Zeng
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA, 15219, USA
| | - Brenda F Kurland
- Department of Biostatistics, University of Pittsburgh, Pittsburgh, PA, USA
| | | | - Carolyn J Anderson
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA, 15219, USA.
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA, USA.
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA.
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Kopka K, Benešová M, Bařinka C, Haberkorn U, Babich J. Glu-Ureido-Based Inhibitors of Prostate-Specific Membrane Antigen: Lessons Learned During the Development of a Novel Class of Low-Molecular-Weight Theranostic Radiotracers. J Nucl Med 2017; 58:17S-26S. [PMID: 28864607 DOI: 10.2967/jnumed.116.186775] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 03/27/2017] [Indexed: 01/19/2023] Open
Abstract
In recent years, several radioligands targeting prostate-specific membrane antigen (PSMA) have been clinically introduced as a new class of theranostic radiopharmaceuticals for the treatment of prostate cancer (PC). In the second decade of the 21st century, a new era in nuclear medicine was initiated by the clinical introduction of small-molecule PSMA inhibitor radioligands, 40 y after the clinical introduction of 18F-FDG. Because of the high incidence and mortality of PC, the new PSMA radioligands have already had a remarkable impact on the clinical management of PC. For the continuing clinical development and long-term success of theranostic agents, designing modern prospective clinical trials in theranostic nuclear medicine is essential. First-in-human studies with PSMA radioligands derived from small-molecule PSMA inhibitors showed highly sensitive imaging of PSMA-positive PC by means of PET and SPECT as well as a dramatic response of metastatic castration-resistant PC after PSMA radioligand therapy. This tremendous success logically led to the initiation of prospective clinical trials with several PSMA radioligands. Meanwhile, MIP-1404, PSMA-11, 2-(3-{1-carboxy-5-[(6-fluoro-pyridine-3-carbonyl)-amino]-pentyl}-ureido)-pentanedioic acid (DCFPyL), PSMA-617, PSMA-1007, and others have entered or will enter prospective clinical trials soon in several countries. The significance becomes apparent by, for example, the considerable increase in the number of publications about PSMA-targeted PET imaging from 2013 to 2016 (e.g., a search of the Web of Science for "PSMA" AND "PET" found only 19 publications in 2013 but 218 in 2016). Closer examination of the initial success of PC treatment with PSMA inhibitor radiotracers leads to several questions from the basic research perspective as well as from the perspective of clinical demands: What lessons have been learned regarding the design of PSMA radioligands that have already been developed? Has an acceptable compromise between optimal PSMA radioligand design and a broad range of clinical demands been reached? Can the lessons learned from multiple successes within the PSMA experience be transferred to further theranostic approaches?
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Affiliation(s)
- Klaus Kopka
- Division of Radiopharmaceutical Chemistry, German Cancer Research Center, INF 280, Heidelberg, Germany .,German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Martina Benešová
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland.,Center for Radiopharmaceutical Sciences ETH-PSI-USZ, Paul Scherrer Institut, Villigen, Switzerland
| | - Cyril Bařinka
- Laboratory of Structural Biology, Institute of Biotechnology CAS, Prumyslova, Vestec, Czech Republic
| | - Uwe Haberkorn
- Department of Nuclear Medicine, University of Heidelberg, INF 400, Heidelberg, Germany.,Clinical Cooperation Unit Nuclear Medicine, German Cancer Research Center, INF 280, Heidelberg, Germany; and
| | - John Babich
- Division of Radiopharmaceutical Sciences and Molecular Imaging Innovations Institute, Department of Radiology, Weill Cornell Medicine, New York, New York
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31
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Choy CJ, Ling X, Geruntho JJ, Beyer SK, Latoche JD, Langton-Webster B, Anderson CJ, Berkman CE. 177Lu-Labeled Phosphoramidate-Based PSMA Inhibitors: The Effect of an Albumin Binder on Biodistribution and Therapeutic Efficacy in Prostate Tumor-Bearing Mice. Am J Cancer Res 2017; 7:1928-1939. [PMID: 28638478 PMCID: PMC5479279 DOI: 10.7150/thno.18719] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/06/2017] [Indexed: 02/07/2023] Open
Abstract
Prostate-specific membrane antigen (PSMA) continues to be an active biomarker for small-molecule PSMA-targeted imaging and therapeutic agents for prostate cancer and various non-prostatic tumors that are characterized by PSMA expression on their neovasculature. One of the challenges for small-molecule PSMA inhibitors with respect to delivering therapeutic payloads is their rapid renal clearance. In order to overcome this pharmacokinetic challenge, we outfitted a 177Lu-labeled phosphoramidate-based PSMA inhibitor (CTT1298) with an albumin-binding motif (CTT1403) and compared its in vivo performance with that of an analogous compound lacking the albumin-binding motif (CTT1401). The radiolabeling of CTT1401 and CTT1403 was achieved using click chemistry to connect 177Lu-DOTA-N3 to the dibenzocyclooctyne (DBCO)-bearing CTT1298 inhibitor cores. A direct comparison in vitro and in vivo performance was made for CTT1401 and CTT1403; the specificity and efficacy by means of cellular uptake and internalization, biodistribution, and therapeutic efficacy were determined for both compounds. While both compounds displayed excellent uptake and rapid internalization in PSMA+ PC3-PIP cells, the albumin binding moiety in CTT1403 conferred clear advantages to the PSMA-inhibitor scaffold including increased circulating half-life and prostate tumor uptake that continued to increase up to 168 h post-injection. This increased tumor uptake translated into superior therapeutic efficacy of CTT1403 in PSMA+ PC3-PIP human xenograft tumors.
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Caromile LA, Dortche K, Rahman MM, Grant CL, Stoddard C, Ferrer FA, Shapiro LH. PSMA redirects cell survival signaling from the MAPK to the PI3K-AKT pathways to promote the progression of prostate cancer. Sci Signal 2017; 10:10/470/eaag3326. [PMID: 28292957 DOI: 10.1126/scisignal.aag3326] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Increased abundance of the prostate-specific membrane antigen (PSMA) on prostate epithelium is a hallmark of advanced metastatic prostate cancer (PCa) and correlates negatively with prognosis. However, direct evidence that PSMA functionally contributes to PCa progression remains elusive. We generated mice bearing PSMA-positive or PSMA-negative PCa by crossing PSMA-deficient mice with transgenic PCa (TRAMP) models, enabling direct assessment of PCa incidence and progression in the presence or absence of PSMA. Compared with PSMA-positive tumors, PSMA-negative tumors were smaller, lower-grade, and more apoptotic with fewer blood vessels, consistent with the recognized proangiogenic function of PSMA. Relative to PSMA-positive tumors, tumors lacking PSMA had less than half the abundance of type 1 insulin-like growth factor receptor (IGF-1R), less activity in the survival pathway mediated by PI3K-AKT signaling, and more activity in the proliferative pathway mediated by MAPK-ERK1/2 signaling. Biochemically, PSMA interacted with the scaffolding protein RACK1, disrupting signaling between the β1 integrin and IGF-1R complex to the MAPK pathway, enabling activation of the AKT pathway instead. Manipulation of PSMA abundance in PCa cell lines recapitulated this signaling pathway switch. Analysis of published databases indicated that IGF-1R abundance, cell proliferation, and expression of transcripts for antiapoptotic markers positively correlated with PSMA abundance in patients, suggesting that this switch may be relevant to human PCa. Our findings suggest that increase in PSMA in prostate tumors contributes to progression by altering normal signal transduction pathways to drive PCa progression and that enhanced signaling through the IGF-1R/β1 integrin axis may occur in other tumors.
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Affiliation(s)
- Leslie Ann Caromile
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Kristina Dortche
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - M Mamunur Rahman
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Christina L Grant
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Christopher Stoddard
- Department of Genetics and Developmental Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Fernando A Ferrer
- Department of Urology, New York Medical College, Valhalla, NY 10595, USA
| | - Linda H Shapiro
- Center for Vascular Biology, University of Connecticut Health Center, Farmington, CT 06030, USA.
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Xu X, Zhang J, Hu S, He S, Bao X, Ma G, Luo J, Cheng J, Zhang Y. 99mTc-labeling and evaluation of a HYNIC modified small-molecular inhibitor of prostate-specific membrane antigen. Nucl Med Biol 2017; 48:69-75. [PMID: 28273495 DOI: 10.1016/j.nucmedbio.2017.01.010] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 01/13/2017] [Accepted: 01/20/2017] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Prostate-specific membrane antigen (PSMA) is a well-established target in the development of radiopharmaceuticals for the diagnosis and therapy of prostate cancer (PCa). In this study, we evaluated a novel 99mTc-labeled small molecular inhibitor of PSMA. METHODS This new small-molecular inhibitor of PSMA, 6-hydrazinonicotinate-Aminocaproic acid-Lysine-Urea-Glutamate (HYNIC-ALUG) was radiolabeled by 99mTc and was evaluated both in vitro and in vivo using PCa models (PC-3 and LNCaP). Radiation dosimetry was assessed in mice. RESULTS 99mTc-HYNIC-ALUG showed excellent stability in different media. A cell assay preliminarily displayed its specificity for PSMA. The inhibitor showed good pharmacokinetics making it suitable for in vivo imaging. PC-3-derived tumors showed no obvious radioactive uptake; however, the LNCaP-derived tumors showed very high radioactive uptake which was significantly decreased by the selective PSMA inhibitor 2-PMPA. Biodistribution in LNCaP xenografts showed an optimum tumor-to-blood ratio of 24.23±3.54 at 2h. Tumor uptake was also decreased in the inhibition experiment with 2-PMPA (19.45±2.14%ID/g versus 1.42±0.15%ID/g at 2h). The effective dose of the 99mTc-HYNIC-ALUG was 8.4E-04mSv/MBq. CONCLUSIONS A new 99mTc-labeled PSMA inhibitor with specific accumulation in PSMA-positive tumors and low background in other organs was synthesized. The radiopharmaceutical also showed very low radiation dosimetry. This agent may significantly improve the diagnosis, staging, and subsequent monitoring of therapeutic effects in PCa patients.
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Affiliation(s)
- Xiaoping Xu
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Center for Biomedical Imaging, Fudan University, Shanghai 200032, China; Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai 200032, China; Shanghai Proton and Heavy Ion Center, Fudan University Shanghai Cancer Center, Shanghai 200032, China
| | - Jianping Zhang
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Center for Biomedical Imaging, Fudan University, Shanghai 200032, China; Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai 200032, China; Shanghai Proton and Heavy Ion Center, Fudan University Shanghai Cancer Center, Shanghai 200032, China
| | - Silong Hu
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Center for Biomedical Imaging, Fudan University, Shanghai 200032, China; Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai 200032, China; Shanghai Proton and Heavy Ion Center, Fudan University Shanghai Cancer Center, Shanghai 200032, China.
| | - Simin He
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Center for Biomedical Imaging, Fudan University, Shanghai 200032, China; Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai 200032, China
| | - Xiao Bao
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Center for Biomedical Imaging, Fudan University, Shanghai 200032, China; Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai 200032, China
| | - Guang Ma
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Center for Biomedical Imaging, Fudan University, Shanghai 200032, China; Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai 200032, China
| | - Jianmin Luo
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Center for Biomedical Imaging, Fudan University, Shanghai 200032, China; Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai 200032, China
| | - Jingyi Cheng
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Center for Biomedical Imaging, Fudan University, Shanghai 200032, China; Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai 200032, China; Shanghai Proton and Heavy Ion Center, Fudan University Shanghai Cancer Center, Shanghai 200032, China
| | - Yingjian Zhang
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Center for Biomedical Imaging, Fudan University, Shanghai 200032, China; Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai 200032, China; Shanghai Proton and Heavy Ion Center, Fudan University Shanghai Cancer Center, Shanghai 200032, China
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van der Born D, Pees A, Poot AJ, Orru RVA, Windhorst AD, Vugts DJ. Fluorine-18 labelled building blocks for PET tracer synthesis. Chem Soc Rev 2017; 46:4709-4773. [DOI: 10.1039/c6cs00492j] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review presents a comprehensive overview of the synthesis and application of fluorine-18 labelled building blocks since 2010.
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Affiliation(s)
- Dion van der Born
- Department of Radiology & Nuclear Medicine
- VU University Medical Center
- 1081 HV Amsterdam
- The Netherlands
| | - Anna Pees
- Department of Radiology & Nuclear Medicine
- VU University Medical Center
- 1081 HV Amsterdam
- The Netherlands
| | - Alex J. Poot
- Department of Radiology & Nuclear Medicine
- VU University Medical Center
- 1081 HV Amsterdam
- The Netherlands
| | - Romano V. A. Orru
- Department of Chemistry and Pharmaceutical Sciences and Amsterdam Institute for Molecules
- Medicines & Systems (AIMMS)
- VU University Amsterdam
- Amsterdam
- The Netherlands
| | - Albert D. Windhorst
- Department of Radiology & Nuclear Medicine
- VU University Medical Center
- 1081 HV Amsterdam
- The Netherlands
| | - Danielle J. Vugts
- Department of Radiology & Nuclear Medicine
- VU University Medical Center
- 1081 HV Amsterdam
- The Netherlands
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35
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Evans JC, Malhotra M, Cryan JF, O'Driscoll CM. The therapeutic and diagnostic potential of the prostate specific membrane antigen/glutamate carboxypeptidase II (PSMA/GCPII) in cancer and neurological disease. Br J Pharmacol 2016; 173:3041-3079. [PMID: 27526115 PMCID: PMC5056232 DOI: 10.1111/bph.13576] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Revised: 07/08/2016] [Accepted: 07/25/2016] [Indexed: 12/11/2022] Open
Abstract
Prostate specific membrane antigen (PSMA) otherwise known as glutamate carboxypeptidase II (GCPII) is a membrane bound protein that is highly expressed in prostate cancer and in the neovasculature of a wide variety of tumours including glioblastomas, breast and bladder cancers. This protein is also involved in a variety of neurological diseases including schizophrenia and ALS. In recent years, there has been a surge in the development of both diagnostics and therapeutics that take advantage of the expression and activity of PSMA/GCPII. These include gene therapy, immunotherapy, chemotherapy and radiotherapy. In this review, we discuss the biological roles that PSMA/GCPII plays, both in normal and diseased tissues, and the current therapies exploiting its activity that are at the preclinical stage. We conclude by giving an expert opinion on the future direction of PSMA/GCPII based therapies and diagnostics and hurdles that need to be overcome to make them effective and viable.
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Affiliation(s)
- James C Evans
- Pharmacodelivery Group, School of Pharmacy, University College Cork, Cork, Ireland
| | - Meenakshi Malhotra
- Pharmacodelivery Group, School of Pharmacy, University College Cork, Cork, Ireland
| | - John F Cryan
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
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36
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Pu F, Salarian M, Xue S, Qiao J, Feng J, Tan S, Patel A, Li X, Mamouni K, Hekmatyar K, Zou J, Wu D, Yang JJ. Prostate-specific membrane antigen targeted protein contrast agents for molecular imaging of prostate cancer by MRI. NANOSCALE 2016; 8:12668-82. [PMID: 26961235 PMCID: PMC5528195 DOI: 10.1039/c5nr09071g] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Prostate-specific membrane antigen (PSMA) is one of the most specific cell surface markers for prostate cancer diagnosis and targeted treatment. However, achieving molecular imaging using non-invasive MRI with high resolution has yet to be achieved due to the lack of contrast agents with significantly improved relaxivity for sensitivity, targeting capabilities and metal selectivity. We have previously reported our creation of a novel class of protein Gd(3+) contrast agents, ProCA32, which displayed significantly improved relaxivity while exhibiting strong Gd(3+) binding selectivity over physiological metal ions. In this study, we report our effort in further developing biomarker-targeted protein MRI contrast agents for molecular imaging of PSMA. Among three PSMA targeted contrast agents engineered with addition of different molecular recognition sequences, ProCA32.PSMA exhibits a binding affinity of 1.1 ± 0.1 μM for PSMA while the metal binding affinity is maintained at 0.9 ± 0.1 × 10(-22) M. In addition, ProCA32.PSMA exhibits r1 of 27.6 mM(-1) s(-1) and r2 of 37.9 mM(-1) s(-1) per Gd (55.2 and 75.8 mM(-1) s(-1) per molecule r1 and r2, respectively) at 1.4 T. At 7 T, ProCA32.PSMA also has r2 of 94.0 mM(-1) s(-1) per Gd (188.0 mM(-1) s(-1) per molecule) and r1 of 18.6 mM(-1) s(-1) per Gd (37.2 mM(-1) s(-1) per molecule). This contrast capability enables the first MRI enhancement dependent on PSMA expression levels in tumor bearing mice using both T1 and T2-weighted MRI at 7 T. Further development of these PSMA-targeted contrast agents are expected to be used for the precision imaging of prostate cancer at an early stage and to monitor disease progression and staging, as well as determine the effect of therapeutic treatment by non-invasive evaluation of the PSMA level using MRI.
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Affiliation(s)
- Fan Pu
- Departments of Chemistry, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30303, USA.
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37
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Dannoon S, Ganguly T, Cahaya H, Geruntho JJ, Galliher MS, Beyer SK, Choy CJ, Hopkins MR, Regan M, Blecha JE, Skultetyova L, Drake CR, Jivan S, Barinka C, Jones EF, Berkman CE, VanBrocklin HF. Structure-Activity Relationship of (18)F-Labeled Phosphoramidate Peptidomimetic Prostate-Specific Membrane Antigen (PSMA)-Targeted Inhibitor Analogues for PET Imaging of Prostate Cancer. J Med Chem 2016; 59:5684-94. [PMID: 27228467 DOI: 10.1021/acs.jmedchem.5b01850] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A series of phosphoramidate-based prostate specific membrane antigen (PSMA) inhibitors of increasing lipophilicity were synthesized (4, 5, and 6), and their fluorine-18 analogs were evaluated for use as positron emission tomography (PET) imaging agents for prostate cancer. To gain insight into their modes of binding, they were also cocrystallized with the extracellular domain of PSMA. All analogs exhibited irreversible binding to PSMA with IC50 values ranging from 0.4 to 1.3 nM. In vitro assays showed binding and rapid internalization (80-95%, 2 h) of the radiolabeled ligands in PSMA(+) cells. In vivo distribution demonstrated significant uptake in CWR22Rv1 (PSMA(+)) tumor, with tumor to blood ratios of 25.6:1, 63.6:1, and 69.6:1 for [(18)F]4, [(18)F]5, and [(18)F]6, respectively, at 2 h postinjection. Installation of aminohexanoic acid (AH) linkers in the phosphoramidate scaffold improved their PSMA binding and inhibition and was critical for achieving suitable in vivo imaging properties, positioning [(18)F]5 and [(18)F]6 as favorable candidates for future prostate cancer imaging clinical trials.
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Affiliation(s)
- Shorouk Dannoon
- Department of Radiology and Biomedical Imaging, University of California-San Francisco , 185 Berry Street, San Francisco, California 94107, United States
| | - Tanushree Ganguly
- Department of Chemistry, Washington State University , Pullman, Washington 99164-4630, United States
| | - Hendry Cahaya
- Department of Radiology and Biomedical Imaging, University of California-San Francisco , 185 Berry Street, San Francisco, California 94107, United States
| | - Jonathan J Geruntho
- Department of Chemistry, Washington State University , Pullman, Washington 99164-4630, United States
| | - Matthew S Galliher
- Department of Chemistry, Washington State University , Pullman, Washington 99164-4630, United States
| | - Sophia K Beyer
- Department of Chemistry, Washington State University , Pullman, Washington 99164-4630, United States
| | - Cindy J Choy
- Department of Chemistry, Washington State University , Pullman, Washington 99164-4630, United States
| | - Mark R Hopkins
- Department of Chemistry, Washington State University , Pullman, Washington 99164-4630, United States
| | - Melanie Regan
- Department of Radiology and Biomedical Imaging, University of California-San Francisco , 185 Berry Street, San Francisco, California 94107, United States
| | - Joseph E Blecha
- Department of Radiology and Biomedical Imaging, University of California-San Francisco , 185 Berry Street, San Francisco, California 94107, United States
| | | | - Christopher R Drake
- Department of Radiology and Biomedical Imaging, University of California-San Francisco , 185 Berry Street, San Francisco, California 94107, United States
| | - Salma Jivan
- Department of Radiology and Biomedical Imaging, University of California-San Francisco , 185 Berry Street, San Francisco, California 94107, United States
| | - Cyril Barinka
- Institute of Biotechnology , 252 50 Prague, Czech Republic
| | - Ella F Jones
- Department of Radiology and Biomedical Imaging, University of California-San Francisco , 185 Berry Street, San Francisco, California 94107, United States
| | - Clifford E Berkman
- Department of Chemistry, Washington State University , Pullman, Washington 99164-4630, United States.,Cancer Targeted Technology , Woodinville, Washington 98072, United States
| | - Henry F VanBrocklin
- Department of Radiology and Biomedical Imaging, University of California-San Francisco , 185 Berry Street, San Francisco, California 94107, United States
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38
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Machulkin AE, Ivanenkov YA, Aladinskaya AV, Veselov MS, Aladinskiy VA, Beloglazkina EK, Koteliansky VE, Shakhbazyan AG, Sandulenko YB, Majouga AG. Small-molecule PSMA ligands. Current state, SAR and perspectives. J Drug Target 2016; 24:679-93. [DOI: 10.3109/1061186x.2016.1154564] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Alexey E. Machulkin
- Moscow State University, Chemistry Dept, Leninskie Gory, Moscow, Russian Federation
- National University of Science and Technology MISiS, Moscow, Russian Federation
| | - Yan A. Ivanenkov
- Moscow State University, Chemistry Dept, Leninskie Gory, Moscow, Russian Federation
- National University of Science and Technology MISiS, Moscow, Russian Federation
- Moscow Institute of Physics and Technology (State University), Dolgoprudny City, Russian Federation
| | - Anastasia V. Aladinskaya
- Moscow Institute of Physics and Technology (State University), Dolgoprudny City, Russian Federation
| | - Mark S. Veselov
- Moscow Institute of Physics and Technology (State University), Dolgoprudny City, Russian Federation
| | - Vladimir A. Aladinskiy
- Moscow Institute of Physics and Technology (State University), Dolgoprudny City, Russian Federation
| | | | - Victor E. Koteliansky
- Moscow State University, Chemistry Dept, Leninskie Gory, Moscow, Russian Federation
- Skolkovo Institute of Science and Technology “Scoltech”, Novaya, Russian Federation
| | - Artem G. Shakhbazyan
- Moscow Institute of Physics and Technology (State University), Dolgoprudny City, Russian Federation
| | - Yuri B. Sandulenko
- Moscow Institute of Physics and Technology (State University), Dolgoprudny City, Russian Federation
| | - Alexander G. Majouga
- Moscow State University, Chemistry Dept, Leninskie Gory, Moscow, Russian Federation
- National University of Science and Technology MISiS, Moscow, Russian Federation
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39
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Choy CJ, Geruntho JJ, Davis AL, Berkman CE. Tunable pH-Sensitive Linker for Controlled Release. Bioconjug Chem 2016; 27:824-30. [DOI: 10.1021/acs.bioconjchem.6b00027] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Cindy J. Choy
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
| | - Jonathan J. Geruntho
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
| | - Austen L. Davis
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
| | - Clifford E. Berkman
- Department of Chemistry, Washington State University, Pullman, Washington 99164-4630, United States
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40
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Marked Response to 177Lu Prostate-Specific Membrane Antigen Treatment in Patient With Metastatic Prostate Cancer. Clin Nucl Med 2016; 41:159-60. [DOI: 10.1097/rlu.0000000000001058] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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41
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Novakova Z, Cerny J, Choy CJ, Nedrow JR, Choi JK, Lubkowski J, Berkman CE, Barinka C. Design of composite inhibitors targeting glutamate carboxypeptidase II: the importance of effector functionalities. FEBS J 2015; 283:130-43. [PMID: 26460595 DOI: 10.1111/febs.13557] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 09/16/2015] [Accepted: 10/09/2015] [Indexed: 01/05/2023]
Abstract
UNLABELLED Inhibitors targeting human glutamate carboxypeptidase II (GCPII) typically consist of a P1' glutamate-derived binding module, which warrants the high affinity and specificity, linked to an effector function that is positioned within the entrance funnel of the enzyme. Here we present a comprehensive structural and computational study aimed at dissecting the importance of the effector function for GCPII binding and affinity. To this end we determined crystal structures of human GCPII in complex with a series of phosphoramidate-based inhibitors harboring effector functions of diverse physicochemical characteristics. Our data show that higher binding affinities of phosphoramidates, compared to matching phosphonates, are linked to the presence of additional hydrogen bonds between Glu424 and Gly518 of the enzyme and the amide group of the phosphoramidate. While the positioning of the P1' glutamate-derived module within the S1' pocket of GCPII is invariant, interaction interfaces between effector functions and residues lining the entrance funnel are highly varied, with the positively charged arginine patch defined by Arg463, Arg534 and Arg536 being the only 'hot-spot' common to several studied complexes. This variability stems in part from the fact that the effector/GCPII interfaces generally encompass isolated areas of nonpolar residues within the entrance funnel and resulting van der Waals contacts lack the directionality typical for hydrogen bonding interactions. The presented data unravel a complexity of binding modes of inhibitors within non-prime site(s) of GCPII and can be exploited for the design of novel GCPII-specific compounds. PDB ID CODES Atomic coordinates of the present structures together with the experimental structure factor amplitudes were deposited at the RCSB Protein Data Bank under accession codes 4P44 (complex with JRB-4-81), 4P45 (complex with JRB-4-73), 4P4B (complex with CTT54), 4P4D (complex with MP1C), 4P4E (complex with MP1D), 4P4F (complex with NC-2-40), 4P4I (complex with T33) and 4P4J (complex with T33D).
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Affiliation(s)
- Zora Novakova
- Institute of Biotechnology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Jiri Cerny
- Institute of Biotechnology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Cindy J Choy
- Department of Chemistry, Washington State University, Pullman, WA, USA
| | - Jessie R Nedrow
- Department of Chemistry, Washington State University, Pullman, WA, USA
| | - Joeseph K Choi
- Department of Chemistry, Washington State University, Pullman, WA, USA
| | - Jacek Lubkowski
- National Cancer Institute, Center for Cancer Research, Macromolecular Crystallography Laboratory, Frederick, MD, USA
| | | | - Cyril Barinka
- Institute of Biotechnology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
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