1
|
Ebrahimi E, Wuest M, Kaur J, Bhardwaj A, Reddy Gade N, Wuest F. [ 18F]ONO-8430506: A novel radioligand for PET imaging of autotaxin (ATX). Bioorg Med Chem Lett 2023; 90:129345. [PMID: 37217023 DOI: 10.1016/j.bmcl.2023.129345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/10/2023] [Accepted: 05/19/2023] [Indexed: 05/24/2023]
Abstract
We have prepared and tested radioligand [18F]ONO-8430506 ([18F]8) as a novel ATX PET imaging agent derived from highly potent ATX inhibitor ONO-8430506. Radioligand [18F]8 could be prepared in good and reproducible radiochemical yields of 35±5% (n=6) using late-stage radiofluorination chemistry. ATX binding analysis showed that 9-benzyl tetrahydro-b-carboline 8 has about five times better inhibitory potency than clinical candidate GLPG1690 and somewhat less inhibitory potency than ATX inhibitor PRIMATX. The binding mode for compound 8 inside the catalytic pocket of ATX using computational modelling and docking protocols revealed that compound 8 resembled a comparable binding mode to that of ATX inhibitor GLPG1690. However, PET imaging studies with radioligand [18F]8 showed only relatively low tumour uptake and retention (SUV60min 0.21±0.03) in the tested 8305C human thyroid tumour model reaching a tumour-to-muscle ratio of ∼2.2 after 60 min.
Collapse
Affiliation(s)
| | - Melinda Wuest
- Department of Oncology, University of Alberta, Canada
| | - Jatinder Kaur
- Department of Oncology, University of Alberta, Canada
| | - Atul Bhardwaj
- Department of Oncology, University of Alberta, Canada
| | | | - Frank Wuest
- Department of Oncology, University of Alberta, Canada; Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Canada; Department of Chemistry, University of Alberta, Canada.
| |
Collapse
|
2
|
Litchfield M, Wuest M, Glubrecht D, Briard E, Auberson YP, McMullen TPW, Brindley DN, Wuest F. Positron Emission Tomography Imaging of Autotaxin in Thyroid and Breast Cancer Models Using [ 18F]PRIMATX. Mol Pharm 2021; 18:3352-3364. [PMID: 34319110 DOI: 10.1021/acs.molpharmaceut.1c00265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Autotaxin (ATX) is a secreted enzyme responsible for producing lysophosphatidic acid (LPA). The ATX/LPA signaling axis is typically activated in wound healing and tissue repair processes. The ATX/LPA axis is highjacked and upregulated in the progression and persistence of several chronic inflammatory diseases, including cancer. As ATX inhibitors are now progressing to clinical testing, innovative diagnostic tools such as positron emission tomography (PET) are needed to measure ATX expression in vivo accurately. The radiotracer, [18F]PRIMATX, was recently developed and tested for PET imaging of ATX in vivo in a murine melanoma model. The goal of the present work was to further validate [18F]PRIMATX as a PET imaging agent by analyzing its in vivo metabolic stability and suitability for PET imaging of ATX in models of human 8305C thyroid tumor and murine 4T1 breast cancer. [18F]PRIMATX displayed favorable metabolic stability in vivo (65% of intact radiotracer after 60 min p.i.) and provided sufficient tumor uptake profiles in both tumor models. Radiotracer uptake could be blocked by 8-12% in 8305C thyroid tumors in the presence of ATX inhibitor AE-32-NZ70 as determined by PET and ex vivo biodistribution analyses. [18F]PRIMATX also showed high brain uptake, which was reduced by 50% through the administration of ATX inhibitor AE-32-NZ70. [18F]PRIMATX is a suitable radiotracer for PET imaging of ATX in the brain and peripheral tumor tissues.
Collapse
Affiliation(s)
- Marcus Litchfield
- Department of Oncology, University of Alberta, 11560 University Avenue, Edmonton T6G 1Z2, Alberta, Canada.,Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton T6G 2S2, Alberta, Canada
| | - Melinda Wuest
- Department of Oncology, University of Alberta, 11560 University Avenue, Edmonton T6G 1Z2, Alberta, Canada
| | - Daryl Glubrecht
- Department of Oncology, University of Alberta, 11560 University Avenue, Edmonton T6G 1Z2, Alberta, Canada
| | - Emmanuelle Briard
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Fabristrasse 2, Novartis Campus, Basel CH-4056, Switzerland
| | - Yves P Auberson
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Fabristrasse 2, Novartis Campus, Basel CH-4056, Switzerland
| | - Todd P W McMullen
- Department of Oncology, University of Alberta, 11560 University Avenue, Edmonton T6G 1Z2, Alberta, Canada.,Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton T6G 2S2, Alberta, Canada
| | - David N Brindley
- Department of Biochemistry, University of Alberta, Edmonton T6G 1Z2, Alberta, Canada.,Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton T6G 2S2, Alberta, Canada
| | - Frank Wuest
- Department of Oncology, University of Alberta, 11560 University Avenue, Edmonton T6G 1Z2, Alberta, Canada.,Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton T6G 2S2, Alberta, Canada
| |
Collapse
|
3
|
Bahlmann J, Madrahimov N, Daniel F, Theidel D, DeTemple DE, Buettner M, Bleich A, Haverich A, Heisterkamp A, Kalies S. Establishment of a guided, in vivo, multi-channel, abdominal, tissue imaging approach. Sci Rep 2020; 10:9224. [PMID: 32513950 PMCID: PMC7280182 DOI: 10.1038/s41598-020-65950-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 05/12/2020] [Indexed: 02/07/2023] Open
Abstract
Novel tools in humane animal research should benefit the animal as well as the experimentally obtained data. Imaging technologies have proven to be versatile and also in accordance with the demands of the 3 R principle. However, most imaging technologies are either limited by the target organs, number of repetitive imaging sessions, or the maximal resolution. We present a technique-, which enables multicolor abdominal imaging on a tissue level. It is based on a small imaging fiber endoscope, which is guided by a second commercial endoscope. The imaging fiber endoscope allows the distinction of four different fluorescence channels. It has a size of less than 1 mm and can approximately resolve single cells. The imaging fiber was successfully tested on cells in vitro, excised organ tissue, and in mice in vivo. Combined with neural networks for image restauration, high quality images from various abdominal organs of interest were realized. The second endoscope ensured a precise placement of the imaging fiber in vivo. Our approach of guided tissue imaging in vivo, combined with neuronal networks for image restauration, permits the acquisition of fluorescence-microscope like images with minimal invasive surgery in vivo. Therefore, it is possible to extend our approach to repetitive imaging sessions. The cost below 30 thousand euros allows an establishment of this approach in various scenarios.
Collapse
Affiliation(s)
- Julia Bahlmann
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany.
- Deutsches Zentrum für Lungenforschung e. V., Munich, Germany.
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany.
| | - Nodir Madrahimov
- Deutsches Zentrum für Lungenforschung e. V., Munich, Germany
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery (HTTG), Hannover Medical School, Hannover, Germany
| | - Fiene Daniel
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
| | - David Theidel
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
| | - Daphne E DeTemple
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
- Department for General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Manuela Buettner
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - André Bleich
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - Axel Haverich
- Deutsches Zentrum für Lungenforschung e. V., Munich, Germany
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery (HTTG), Hannover Medical School, Hannover, Germany
| | - Alexander Heisterkamp
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Deutsches Zentrum für Lungenforschung e. V., Munich, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
| | - Stefan Kalies
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany.
- Deutsches Zentrum für Lungenforschung e. V., Munich, Germany.
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany.
| |
Collapse
|