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Enke JS, Bundschuh RA, Claus R, Lapa C. New PET Tracers for Lymphoma. PET Clin 2024; 19:463-474. [PMID: 38969567 DOI: 10.1016/j.cpet.2024.05.002] [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] [Indexed: 07/07/2024]
Abstract
While functional imaging with [18F]Fluoro-deoxy-glucose positron emission tomography (PET)/computed tomography is a well-established imaging modality in most lymphoma entities, novel tracers addressing cell surface receptors, tumor biology, and the microenvironment are being developed. Especially, with the emergence of immuno-PET targeting surface markers of lymphoma cells, a new imaging modality of immunotherapies is evolving, which might especially aid in relapsed and refractory disease stages. This review highlights different new PET tracers in indolent and aggressive lymphoma subtypes and summarizes the current state of immuno-PET imaging in lymphoma.
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Affiliation(s)
- Johanna S Enke
- Nuclear Medicine, Faculty of Medicine, University of Augsburg, Stenglinstr. 2, 86156 Augsburg, Germany.
| | - Ralph A Bundschuh
- Nuclear Medicine, Faculty of Medicine, University of Augsburg, Stenglinstr. 2, 86156 Augsburg, Germany
| | - Rainer Claus
- Hematology and Oncology, Faculty of Medicine, University of Augsburg, Stenglinstr. 2, 86156 Augsburg, Germany; Pathology, Faculty of Medicine, University of Augsburg, Stenglinstr. 2, 86156 Augsburg, Germany
| | - Constantin Lapa
- Nuclear Medicine, Faculty of Medicine, University of Augsburg, Stenglinstr. 2, 86156 Augsburg, Germany
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2
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van Winkel CAJ, Pierik FR, Brouwers AH, de Groot DJA, de Vries EGE, Lub-de Hooge MN. Molecular imaging supports the development of multispecific cancer antibodies. Nat Rev Clin Oncol 2024:10.1038/s41571-024-00946-3. [PMID: 39327536 DOI: 10.1038/s41571-024-00946-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/11/2024] [Indexed: 09/28/2024]
Abstract
Multispecific antibodies are engineered antibody derivatives that can bind to two or more distinct epitopes or antigens. Unlike mixtures of monospecific antibodies, the binding properties of multispecific antibodies enable two specific molecules to be physically linked, a characteristic with important applications in cancer therapy. The field of multispecific antibodies is highly dynamic and expanding rapidly; to date, 15 multispecific antibodies have been approved for clinical use, of which 11 were approved for oncological indications, and more than 100 new antibodies are currently in clinical development. Nevertheless, substantial challenges limit the applications of multispecific antibodies in cancer therapy, particularly inefficient targeting of solid tumours and substantial adverse effects. Both PET and single photon emission CT imaging can reveal the biodistribution and complex pharmacology of radiolabelled multispecific antibodies. This Review summarizes the insights obtained from preclinical and clinical molecular imaging studies of multispecific antibodies, focusing on their structural properties, such as molecular weight, shape, target specificity, affinity and avidity. The opportunities associated with use of molecular imaging studies to support the clinical development of multispecific antibody therapies are also highlighted.
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Affiliation(s)
- Claudia A J van Winkel
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Frank R Pierik
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Adrienne H Brouwers
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Derk Jan A de Groot
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Elisabeth G E de Vries
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Marjolijn N Lub-de Hooge
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands.
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, Netherlands.
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3
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Fröse J, Rowley J, Farid AS, Rakhshandehroo T, Leclerc P, Mak H, Allen H, Moravej H, Munaretto L, Millan-Barea L, Codet E, Glockner H, Jacobson C, Hemann M, Rashidian M. Development of an antigen-based approach to noninvasively image CAR T cells in real time and as a predictive tool. SCIENCE ADVANCES 2024; 10:eadn3816. [PMID: 39292778 PMCID: PMC11409975 DOI: 10.1126/sciadv.adn3816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 08/12/2024] [Indexed: 09/20/2024]
Abstract
CAR T cell therapy has revolutionized the treatment of a spectrum of blood-related malignancies. However, treatment responses vary among cancer types and patients. Accurate monitoring of CAR T cell dynamics is crucial for understanding and evaluating treatment efficacy. Positron emission tomography (PET) offers a comprehensive view of CAR T cell homing, especially in critical organs such as lymphoid structures and bone marrow. This information will help assess treatment response and predict relapse risk. Current PET imaging methods for CAR T require genetic modifications, limiting clinical use. To overcome this, we developed an antigen-based imaging approach enabling whole-body CAR T cell imaging. The probe detects CAR T cells in vivo without affecting their function. In an immunocompetent B cell leukemia model, CAR-PET signal in the spleen predicted early mortality risk. The antigen-based CAR-PET approach allows assessment of CAR T therapy responses without altering established clinical protocols. It seamlessly integrates with FDA-approved and future CAR T cell generations, facilitating broader clinical application.
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Affiliation(s)
- Julia Fröse
- David H. Koch Institute for Integrative Cancer Research, Cambridge, MA 02142, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Jennifer Rowley
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Harvard Medical School, Boston, MA 02215, USA
| | - Ali Salehi Farid
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Taha Rakhshandehroo
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Paul Leclerc
- David H. Koch Institute for Integrative Cancer Research, Cambridge, MA 02142, USA
| | - Howard Mak
- David H. Koch Institute for Integrative Cancer Research, Cambridge, MA 02142, USA
| | - Harris Allen
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Heydar Moravej
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Leila Munaretto
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Luis Millan-Barea
- David H. Koch Institute for Integrative Cancer Research, Cambridge, MA 02142, USA
| | - Elisabeth Codet
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Hannah Glockner
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Caron Jacobson
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Michael Hemann
- David H. Koch Institute for Integrative Cancer Research, Cambridge, MA 02142, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Mohammad Rashidian
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
- Harvard Medical School, Boston, MA 02215, USA
- Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02215, USA
- Parker Institute for Cancer Immunotherapy, San Francisco, CA 94129, USA
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4
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Zhao Y, Qin C, Lin C, Li Z, Zhao B, Li T, Zhang X, Wang W. Pancreatic ductal adenocarcinoma cells reshape the immune microenvironment: Molecular mechanisms and therapeutic targets. Biochim Biophys Acta Rev Cancer 2024; 1879:189183. [PMID: 39303859 DOI: 10.1016/j.bbcan.2024.189183] [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: 06/09/2024] [Revised: 08/23/2024] [Accepted: 09/13/2024] [Indexed: 09/22/2024]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a digestive system malignancy characterized by challenging early detection, limited treatment alternatives, and generally poor prognosis. Although there have been significant advancements in immunotherapy for hematological malignancies and various solid tumors in recent decades, with impressive outcomes in recent preclinical and clinical trials, the effectiveness of these therapies in treating PDAC continues to be modest. The unique immunological microenvironment of PDAC, especially the abnormal distribution, complex composition, and variable activation states of tumor-infiltrating immune cells, greatly restricts the effectiveness of immunotherapy. Undoubtedly, integrating data from both preclinical models and human studies helps accelerate the identification of reliable molecules and pathways responsive to targeted biological therapies and immunotherapies, thereby continuously optimizing therapeutic combinations. In this review, we delve deeply into how PDAC cells regulate the immune microenvironment through complex signaling networks, affecting the quantity and functional status of immune cells to promote immune escape and tumor progression. Furthermore, we explore the multi-modal immunotherapeutic strategies currently under development, emphasizing the transformation of the immunosuppressive environment into an anti-tumor milieu by targeting specific molecular and cellular pathways, providing insights for the development of novel treatment strategies.
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Affiliation(s)
- Yutong Zhao
- Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100023, PR China; Key Laboratory of Research in Pancreatic Tumor, Chinese Academy of Medical Sciences, Beijing 100023, PR China; National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College Hospital, Beijing 100023, PR China
| | - Cheng Qin
- Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100023, PR China; Key Laboratory of Research in Pancreatic Tumor, Chinese Academy of Medical Sciences, Beijing 100023, PR China; National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College Hospital, Beijing 100023, PR China
| | - Chen Lin
- Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100023, PR China; Key Laboratory of Research in Pancreatic Tumor, Chinese Academy of Medical Sciences, Beijing 100023, PR China; National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College Hospital, Beijing 100023, PR China
| | - Zeru Li
- Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100023, PR China; Key Laboratory of Research in Pancreatic Tumor, Chinese Academy of Medical Sciences, Beijing 100023, PR China; National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College Hospital, Beijing 100023, PR China
| | - Bangbo Zhao
- Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100023, PR China; Key Laboratory of Research in Pancreatic Tumor, Chinese Academy of Medical Sciences, Beijing 100023, PR China; National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College Hospital, Beijing 100023, PR China
| | - Tianyu Li
- Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100023, PR China; Key Laboratory of Research in Pancreatic Tumor, Chinese Academy of Medical Sciences, Beijing 100023, PR China; National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College Hospital, Beijing 100023, PR China
| | - Xiangyu Zhang
- Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100023, PR China; Key Laboratory of Research in Pancreatic Tumor, Chinese Academy of Medical Sciences, Beijing 100023, PR China; National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College Hospital, Beijing 100023, PR China
| | - Weibin Wang
- Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100023, PR China; Key Laboratory of Research in Pancreatic Tumor, Chinese Academy of Medical Sciences, Beijing 100023, PR China; National Science and Technology Key Infrastructure on Translational Medicine in Peking Union Medical College Hospital, Beijing 100023, PR China.
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5
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Barisic S, Cherkasova E, Nadal R, Tian X, Chen L, Parrizzi A, Reger RN, Scurti GM, Nishimura MI, Childs RW. Quantification of circulating TCR-engineered T cells targeting a human endogenous retrovirus post-adoptive transfer using nanoplate digital PCR. Mol Ther Methods Clin Dev 2024; 32:101324. [PMID: 39319301 PMCID: PMC11419864 DOI: 10.1016/j.omtm.2024.101324] [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] [Received: 02/26/2024] [Accepted: 08/15/2024] [Indexed: 09/26/2024]
Abstract
In vivo expansion of genetically modified T cells in cancer patients following adoptive transfer has been linked to both anti-tumor activity and T cell-mediated toxicities. The development of digital PCR has improved the accuracy in quantifying the in vivo status of adoptively infused T cells compared to qPCR or flow cytometry. Here, we developed and evaluated the feasibility and performance of nanoplate-based digital PCR (ndPCR) to quantify adoptively infused T cells engineered with a T cell receptor (TCR) that recognizes a human endogenous retrovirus type E (HERV-E) antigen. Analysis of blood samples collected from patients with metastatic kidney cancer following the infusion of HERV-E TCR-transduced T cells established the limit of detection of ndPCR to be 0.3 transgene copies/μL of reaction. The lower limit of quantification for ndPCR was one engineered T cell per 10,000 PBMCs, which outperformed both qPCR and flow cytometry by 1 log. High inter-test and test-retest reliability was confirmed by analyzing blood samples collected from multiple patients. In conclusion, we demonstrated the feasibility of ndPCR for detecting and monitoring the fate of TCR-engineered T cells in adoptive cell therapy.
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Affiliation(s)
- Stefan Barisic
- Laboratory of Transplantation Immunotherapy, Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Elena Cherkasova
- Laboratory of Transplantation Immunotherapy, Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Rosa Nadal
- Laboratory of Transplantation Immunotherapy, Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Xin Tian
- Office of Biostatistics Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Long Chen
- Laboratory of Transplantation Immunotherapy, Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Angelina Parrizzi
- Laboratory of Transplantation Immunotherapy, Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Robert N Reger
- Laboratory of Transplantation Immunotherapy, Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Gina M Scurti
- Department of Surgery, Loyola University Chicago, Maywood, IL 60153, USA
| | | | - Richard W Childs
- Laboratory of Transplantation Immunotherapy, Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
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Eerkens AL, Brummel K, Vledder A, Paijens ST, Requesens M, Loiero D, van Rooij N, Plat A, Haan FJ, Klok P, Yigit R, Roelofsen T, de Lange NM, Klomp R, Church D, Ter Elst A, Wardenaar R, Spierings D, Foijer F, Koelzer VH, Bosse T, Bart J, Jalving M, Reyners AKL, de Bruyn M, Nijman HW. Neoadjuvant immune checkpoint blockade in women with mismatch repair deficient endometrial cancer: a phase I study. Nat Commun 2024; 15:7695. [PMID: 39227583 PMCID: PMC11372054 DOI: 10.1038/s41467-024-52098-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 08/26/2024] [Indexed: 09/05/2024] Open
Abstract
Neoadjuvant immune checkpoint blockade (ICB) has shown unprecedented activity in mismatch repair deficient (MMRd) colorectal cancers, but its effectiveness in MMRd endometrial cancer (EC) remains unknown. In this investigator-driven, phase I, feasibility study (NCT04262089), 10 women with MMRd EC of any grade, planned for primary surgery, received two cycles of neoadjuvant pembrolizumab (200 mg IV) every three weeks. A pathologic response (primary objective) was observed in 5/10 patients, with 2 patients showing a major pathologic response. No patient achieved a complete pathologic response. A partial radiologic response (secondary objective) was observed in 3/10 patients, 5/10 patients had stable disease and 2/10 patients were non-evaluable on magnetic resonance imaging. All patients completed treatment without severe toxicity (exploratory objective). At median duration of follow-up of 22.5 months, two non-responders experienced disease recurrence. In-depth analysis of the loco-regional and systemic immune response (predefined exploratory objective) showed that monoclonal T cell expansion significantly correlated with treatment response. Tumour-draining lymph nodes displayed clonal overlap with intra-tumoural T cell expansion. All pre-specified endpoints, efficacy in terms of pathologic response as primary endpoint, radiologic response as secondary outcome and safety and tolerability as exploratory endpoint, were reached. Neoadjuvant ICB with pembrolizumab proved safe and induced pathologic, radiologic, and immunologic responses in MMRd EC, warranting further exploration of extended neoadjuvant treatment.
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Affiliation(s)
- Anneke L Eerkens
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Koen Brummel
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Annegé Vledder
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Sterre T Paijens
- Department of Radiotherapy, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Marta Requesens
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Dominik Loiero
- Department of Pathology and Molecular Pathology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Nienke van Rooij
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Annechien Plat
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Floris-Jan Haan
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Patty Klok
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Refika Yigit
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Thijs Roelofsen
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, Groningen, The Netherlands
| | | | - Rie Klomp
- Department of Obstetrics and Gynaecology, Treant, Emmen, The Netherlands
| | - David Church
- Welcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
- National Institute for Health Research (NIHR) Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom
| | - Arja Ter Elst
- Department of Pathology and Medical Biology, University Medical Centre Groningen, Groningen, The Netherlands
| | - René Wardenaar
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Diana Spierings
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Floris Foijer
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Viktor Hendrik Koelzer
- Department of Pathology and Molecular Pathology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Tjalling Bosse
- Department of Pathology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Joost Bart
- Department of Pathology and Medical Biology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Mathilde Jalving
- Department of Medical Oncology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Anna K L Reyners
- Department of Medical Oncology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Marco de Bruyn
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, Groningen, The Netherlands.
| | - Hans W Nijman
- Department of Obstetrics and Gynaecology, University Medical Centre Groningen, Groningen, The Netherlands.
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De Groof TWM, Lauwers Y, De Pauw T, Saxena M, Vincke C, Van Craenenbroeck J, Chapon C, Le Grand R, Raes G, Naninck T, Van Ginderachter JA, Devoogdt N. Specific imaging of CD8 + T-Cell dynamics with a nanobody radiotracer against human CD8β. Eur J Nucl Med Mol Imaging 2024:10.1007/s00259-024-06896-3. [PMID: 39218831 DOI: 10.1007/s00259-024-06896-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Accepted: 08/12/2024] [Indexed: 09/04/2024]
Abstract
PURPOSE While immunotherapy has revolutionized the oncology field, variations in therapy responsiveness limit the broad applicability of these therapies. Diagnostic imaging of immune cell, and specifically CD8+ T cell, dynamics could allow early patient stratification and result in improved therapy efficacy and safety. In this study, we report the development of a nanobody-based immunotracer for non-invasive SPECT and PET imaging of human CD8+ T-cell dynamics. METHODS Nanobodies targeting human CD8β were generated by llama immunizations and subsequent biopanning. The lead anti-human CD8β nanobody was characterized on binding, specificity, stability and toxicity. The lead nanobody was labeled with technetium-99m, gallium-68 and copper-64 for non-invasive imaging of human T-cell lymphomas and CD8+ T cells in human CD8 transgenic mice and non-human primates by SPECT/CT or PET/CT. Repeated imaging of CD8+ T cells in MC38 tumor-bearing mice allowed visualization of CD8+ T-cell dynamics. RESULTS The nanobody-based immunotracer showed high affinity and specific binding to human CD8 without unwanted immune activation. CD8+ T cells were non-invasively visualized by SPECT and PET imaging in naïve and tumor-bearing mice and in naïve non-human primates with high sensitivity. The nanobody-based immunotracer showed enhanced specificity for CD8+ T cells and/or faster in vivo pharmacokinetics compared to previous human CD8-targeting immunotracers, allowing us to follow human CD8+ T-cell dynamics already at early timepoints. CONCLUSION This study describes the development of a more specific human CD8+ T-cell-targeting immunotracer, allowing follow-up of immunotherapy responses by non-invasive imaging of human CD8+ T-cell dynamics.
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Affiliation(s)
- Timo W M De Groof
- Molecular Imaging and Therapy Laboratory, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Yoline Lauwers
- Molecular Imaging and Therapy Laboratory, Vrije Universiteit Brussel, Brussels, Belgium
| | - Tessa De Pauw
- Molecular Imaging and Therapy Laboratory, Vrije Universiteit Brussel, Brussels, Belgium
| | - Mohit Saxena
- Center for Immunology of Viral, Auto-immune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Université Paris-Saclay, Fontenay-aux-Roses & Le Kremlin-Bicêtre, Inserm, Paris, CEA, France
| | - Cécile Vincke
- Laboratory of Myeloid Cell Immunology, VIB Center for Inflammation Research, Brussels, Belgium
- Brussels Center for Immunology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Jolien Van Craenenbroeck
- Laboratory of Myeloid Cell Immunology, VIB Center for Inflammation Research, Brussels, Belgium
- Brussels Center for Immunology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Catherine Chapon
- Center for Immunology of Viral, Auto-immune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Université Paris-Saclay, Fontenay-aux-Roses & Le Kremlin-Bicêtre, Inserm, Paris, CEA, France
| | - Roger Le Grand
- Center for Immunology of Viral, Auto-immune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Université Paris-Saclay, Fontenay-aux-Roses & Le Kremlin-Bicêtre, Inserm, Paris, CEA, France
| | - Geert Raes
- Laboratory of Myeloid Cell Immunology, VIB Center for Inflammation Research, Brussels, Belgium
- Brussels Center for Immunology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Thibaut Naninck
- Center for Immunology of Viral, Auto-immune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Université Paris-Saclay, Fontenay-aux-Roses & Le Kremlin-Bicêtre, Inserm, Paris, CEA, France
| | - Jo A Van Ginderachter
- Laboratory of Myeloid Cell Immunology, VIB Center for Inflammation Research, Brussels, Belgium
- Brussels Center for Immunology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Nick Devoogdt
- Molecular Imaging and Therapy Laboratory, Vrije Universiteit Brussel, Brussels, Belgium.
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Maier A, Teunissen AJP, Nauta SA, Lutgens E, Fayad ZA, van Leent MMT. Uncovering atherosclerotic cardiovascular disease by PET imaging. Nat Rev Cardiol 2024; 21:632-651. [PMID: 38575752 PMCID: PMC11324396 DOI: 10.1038/s41569-024-01009-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/04/2024] [Indexed: 04/06/2024]
Abstract
Assessing atherosclerosis severity is essential for precise patient stratification. Specifically, there is a need to identify patients with residual inflammation because these patients remain at high risk of cardiovascular events despite optimal management of cardiovascular risk factors. Molecular imaging techniques, such as PET, can have an essential role in this context. PET imaging can indicate tissue-based disease status, detect early molecular changes and provide whole-body information. Advances in molecular biology and bioinformatics continue to help to decipher the complex pathogenesis of atherosclerosis and inform the development of imaging tracers. Concomitant advances in tracer synthesis methods and PET imaging technology provide future possibilities for atherosclerosis imaging. In this Review, we summarize the latest developments in PET imaging techniques and technologies for assessment of atherosclerotic cardiovascular disease and discuss the relationship between imaging readouts and transcriptomics-based plaque phenotyping.
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Affiliation(s)
- Alexander Maier
- Department of Cardiology and Angiology, University Heart Center Freiburg-Bad Krozingen, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Abraham J P Teunissen
- BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Icahn Genomics Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sheqouia A Nauta
- BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Esther Lutgens
- Cardiovascular Medicine and Immunology, Experimental Cardiovascular Immunology Laboratory, Mayo Clinic, Rochester, MN, USA
| | - Zahi A Fayad
- BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Mandy M T van Leent
- BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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Ding J, Liqian, Lin Y, Zheng X, Huang C, Hong J, Chen C, Fei Z. Baseline SUVmax is correlated with tumor hypoxia and patient outcomes in nasopharyngeal carcinoma. Sci Rep 2024; 14:20157. [PMID: 39215035 PMCID: PMC11364769 DOI: 10.1038/s41598-024-71191-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 08/26/2024] [Indexed: 09/04/2024] Open
Abstract
To evaluate the prognostic significance of the maximum standardized uptake value (SUVmax) in nasopharyngeal carcinoma (NPC), establish a gene signature that correlates with SUVmax, and explore the underlying biological behaviors associated with these correlations for the prediction of clinical outcomes. A cohort of 726 patients with NPC was examined to identify correlations between SUVmax and various clinical variables. RNA sequencing was performed to identify genes related to SUVmax, and these genes were used to develop an SUV signature. Additionally, transcriptome enrichment analysis was conducted to investigate the potential biological behaviors underlying the observed correlations. Higher SUVmax was associated with an increased tumor burden and worse prognosis. The SUV signature, which consisted of 10 genes, was positively correlated with SUVmax, and it predicted worse survival outcomes. This signature was highly expressed in malignant epithelial cells and associated with hypoxia and resistance to radiotherapy. Additionally, the signature was negatively correlated with immune function. SUVmax is a valuable prognostic indicator in NPC, with higher values predicting worse outcomes. The SUV signature offers further prognostic insights, linking glucose metabolism to tumor aggressiveness, treatment resistance, and immune function, and it could represent a potential biomarker for NPC.
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Affiliation(s)
- Jianming Ding
- Department of Radiation Oncology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuma Road, Fuzhou, 350014, Fujian, People's Republic of China
| | - Liqian
- Department of Radiation Oncology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuma Road, Fuzhou, 350014, Fujian, People's Republic of China
| | - Yuhao Lin
- Department of Radiation Oncology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuma Road, Fuzhou, 350014, Fujian, People's Republic of China
| | - Xiaobing Zheng
- Department of Radiation Oncology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuma Road, Fuzhou, 350014, Fujian, People's Republic of China
| | - Chaoxiong Huang
- Department of Radiation Oncology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuma Road, Fuzhou, 350014, Fujian, People's Republic of China
| | - Jiabiao Hong
- Department of Radiation Oncology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuma Road, Fuzhou, 350014, Fujian, People's Republic of China
| | - Chuanben Chen
- Department of Radiation Oncology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuma Road, Fuzhou, 350014, Fujian, People's Republic of China.
| | - Zhaodong Fei
- Department of Radiation Oncology, Fujian Cancer Hospital, Clinical Oncology School of Fujian Medical University, Fuma Road, Fuzhou, 350014, Fujian, People's Republic of China.
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10
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Martin S, Wendlinger L, Zitti B, Hicham M, Postupalenko V, Marx L, Giordano-Attianese G, Cribioli E, Irving M, Litvinenko A, Faizova R, Viertl D, Schottelius M. Validation of the C-X-C chemokine receptor 3 (CXCR3) as a target for PET imaging of T cell activation. EJNMMI Res 2024; 14:77. [PMID: 39196448 PMCID: PMC11358572 DOI: 10.1186/s13550-024-01142-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 08/19/2024] [Indexed: 08/29/2024] Open
Abstract
PURPOSE CXCR3 is expressed on activated T cells and plays a crucial role in T-cell recruitment to the tumor microenvironment (TME) during cell-based and immune checkpoint inhibitor (ICI) immunotherapy. This study utilized a 64Cu-labeled NOTA-α-CXCR3 antibody to assess CXCR3 expression in the TME and validate it as a potential T cell activation biomarker in vivo. PROCEDURES CXCR3+ cells infiltrating MC38 tumors (B57BL/6 mice, untreated and treated with αPD-1/αCTLA-4 ICI) were quantified using fluorescence microscopy and flow cytometry. A commercial anti-mouse CXCR3 antibody (α-CXCR3) was site-specifically conjugated with 2,2,2-(1,4,7-triazacyclononane-1,4,7-triyl)triacetic acid (NOTA) and radiolabeled with 64Cu. Saturation binding of [64Cu]Cu-NOTA-α-CXCR3 was investigated using CHO cells stably transfected with murine CXCR3. Biodistribution and PET imaging studies both at baseline and after 1 to 3 cycles of ICI, respectively, were carried out using different molar activities (10 GBq/µmol to 300 GBq/µmol) of [64Cu]Cu-NOTA-α-CXCR3. RESULTS Flow cytometry analysis at baseline confirmed the presence of CXCR3 + T-cells in MC38 tumors, which was significantly increased at day five after ICI (treated 33.8 ± 17.4 vs. control 8.8 ± 6.2 CD3+CXCR3+ cells/mg). These results were qualitatively and quantitatively confirmed by immunofluorescence of tumor cryoslices. In vivo PET imaging of MC38 tumor bearing mice before, during and after ICI using [64Cu]Cu-NOTA-α-CXCR3 (Kd = 3.3 nM) revealed a strong dependence of CXCR3-specificity of tracer accumulation in secondary lymphoid organs on molar activity. At 300 GBq/µmol (1.5 µg of antibody/mouse), a specific signal was observed in lymph nodes (6.33 ± 1.25 control vs. 3.95 ± 1.23%IA/g blocking) and the spleen (6.04 ± 1.02 control vs. 3.84 ± 0.79%IA/g blocking) at 48 h p.i. Spleen-to-liver ratios indicated a time dependent systemic immune response showing a steady increase from 1.08 ± 0.19 (untreated control) to 1.54 ± 0.14 (three ICI cycles). CONCLUSIONS This study demonstrates the feasibility of in vivo imaging of CXCR3 upregulation under immunotherapy using antibodies. However, high molar activities and low antibody doses are essential for sensitive detection in lymph nodes and spleen. Detecting therapy-induced changes in CXCR3+ T cell numbers in tumors was challenging due to secondary antibody-related effects. Nonetheless, CXCR3 remains a promising target for imaging T cell activation, with anticipated improvements in sensitivity using alternative tracers with high affinities and favorable pharmacokinetics.
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Affiliation(s)
- Sebastian Martin
- Translational Radiopharmaceutical Sciences, Department of Nuclear Medicine, Department of Oncology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne (UNIL), Lausanne, 1011, Switzerland
- AGORA, Pôle de recherche sur le cancer, Lausanne, 1011, Switzerland
- SCCL Swiss Cancer Center Leman, Lausanne, 1011, Switzerland
| | - Lennard Wendlinger
- Translational Radiopharmaceutical Sciences, Department of Nuclear Medicine, Department of Oncology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne (UNIL), Lausanne, 1011, Switzerland
- AGORA, Pôle de recherche sur le cancer, Lausanne, 1011, Switzerland
- SCCL Swiss Cancer Center Leman, Lausanne, 1011, Switzerland
| | - Béatrice Zitti
- AGORA, Pôle de recherche sur le cancer, Lausanne, 1011, Switzerland
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | - Mehdi Hicham
- AGORA, Pôle de recherche sur le cancer, Lausanne, 1011, Switzerland
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | - Viktoriia Postupalenko
- Debiopharm Research & Manufacturing SA, Campus "après-demain", Rue du Levant 146, Martigny, 1920, Switzerland
| | - Léo Marx
- Debiopharm Research & Manufacturing SA, Campus "après-demain", Rue du Levant 146, Martigny, 1920, Switzerland
| | - Greta Giordano-Attianese
- Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, 1066, Switzerland
- Department of Oncology, University Hospital of Lausanne, Lausanne, 1011, Switzerland
| | - Elisabetta Cribioli
- Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, 1066, Switzerland
- Department of Oncology, University Hospital of Lausanne, Lausanne, 1011, Switzerland
| | - Melita Irving
- Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, 1066, Switzerland
- Department of Oncology, University Hospital of Lausanne, Lausanne, 1011, Switzerland
| | - Alexandra Litvinenko
- Translational Radiopharmaceutical Sciences, Department of Nuclear Medicine, Department of Oncology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne (UNIL), Lausanne, 1011, Switzerland
- AGORA, Pôle de recherche sur le cancer, Lausanne, 1011, Switzerland
- SCCL Swiss Cancer Center Leman, Lausanne, 1011, Switzerland
| | - Radmila Faizova
- Translational Radiopharmaceutical Sciences, Department of Nuclear Medicine, Department of Oncology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne (UNIL), Lausanne, 1011, Switzerland
- AGORA, Pôle de recherche sur le cancer, Lausanne, 1011, Switzerland
- SCCL Swiss Cancer Center Leman, Lausanne, 1011, Switzerland
| | - David Viertl
- Translational Radiopharmaceutical Sciences, Department of Nuclear Medicine, Department of Oncology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne (UNIL), Lausanne, 1011, Switzerland
- AGORA, Pôle de recherche sur le cancer, Lausanne, 1011, Switzerland
- SCCL Swiss Cancer Center Leman, Lausanne, 1011, Switzerland
| | - Margret Schottelius
- Translational Radiopharmaceutical Sciences, Department of Nuclear Medicine, Department of Oncology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne (UNIL), Lausanne, 1011, Switzerland.
- AGORA, Pôle de recherche sur le cancer, Lausanne, 1011, Switzerland.
- SCCL Swiss Cancer Center Leman, Lausanne, 1011, Switzerland.
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11
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Gabriëls RY, van der Waaij AM, Linssen MD, Dobosz M, Volkmer P, Jalal S, Robinson D, Hermoso MA, Lub-de Hooge MN, Festen EAM, Kats-Ugurlu G, Dijkstra G, Nagengast WB. Fluorescently labelled vedolizumab to visualise drug distribution and mucosal target cells in inflammatory bowel disease. Gut 2024; 73:1454-1463. [PMID: 38580386 PMCID: PMC11347245 DOI: 10.1136/gutjnl-2023-331696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 03/22/2024] [Indexed: 04/07/2024]
Abstract
OBJECTIVE Improving patient selection and development of biological therapies such as vedolizumab in IBD requires a thorough understanding of the mechanism of action and target binding, thereby providing individualised treatment strategies. We aimed to visualise the macroscopic and microscopic distribution of intravenous injected fluorescently labelled vedolizumab, vedo-800CW, and identify its target cells using fluorescence molecular imaging (FMI). DESIGN Forty three FMI procedures were performed, which consisted of macroscopic in vivo assessment during endoscopy, followed by macroscopic and microscopic ex vivo imaging. In phase A, patients received an intravenous dose of 4.5 mg, 15 mg vedo-800CW or no tracer prior to endoscopy. In phase B, patients received 15 mg vedo-800CW preceded by an unlabelled (sub)therapeutic dose of vedolizumab. RESULTS FMI quantification showed a dose-dependent increase in vedo-800CW fluorescence intensity in inflamed tissues, with 15 mg (153.7 au (132.3-163.7)) as the most suitable tracer dose compared with 4.5 mg (55.3 au (33.6-78.2)) (p=0.0002). Moreover, the fluorescence signal decreased by 61% when vedo-800CW was administered after a therapeutic dose of unlabelled vedolizumab, suggesting target saturation in the inflamed tissue. Fluorescence microscopy and immunostaining showed that vedolizumab penetrated the inflamed mucosa and was associated with several immune cell types, most prominently with plasma cells. CONCLUSION These results indicate the potential of FMI to determine the local distribution of drugs in the inflamed target tissue and identify drug target cells, providing new insights into targeted agents for their use in IBD. TRIAL REGISTRATION NUMBER NCT04112212.
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Affiliation(s)
- Ruben Y Gabriëls
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Anne M van der Waaij
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Matthijs D Linssen
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Michael Dobosz
- Department of Oncology and Immuno-Oncology, Regeneron Pharmaceuticals inc, Tarrytown, New York, USA
| | - Pia Volkmer
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Sumreen Jalal
- Department of Oncology and Immuno-Oncology, Regeneron Pharmaceuticals inc, Tarrytown, New York, USA
| | - Dominic Robinson
- Centre for Optical Diagnostics and Therapy, Department of Otorhinolaryngology and Head and Neck Surgery, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Marcela A Hermoso
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
- Laboratory of Innate Immunity, Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Marjolijn N Lub-de Hooge
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Eleonora A M Festen
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Gursah Kats-Ugurlu
- Department of Pathology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Gerard Dijkstra
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
| | - Wouter B Nagengast
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
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12
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Pezzana S, Blaess S, Kortendieck J, Hemmer N, Tako B, Pietura C, Ruoff L, Riel S, Schaller M, Gonzalez-Menendez I, Quintanilla-Martinez L, Mascioni A, Aivazian A, Wilson I, Maurer A, Pichler BJ, Kneilling M, Sonanini D. In-depth cross-validation of human and mouse CD4-specific minibodies for noninvasive PET imaging of CD4 + cells and response prediction to cancer immunotherapy. Theranostics 2024; 14:4582-4597. [PMID: 39239511 PMCID: PMC11373626 DOI: 10.7150/thno.95173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 07/11/2024] [Indexed: 09/07/2024] Open
Abstract
Increasing evidence emphasizes the pivotal role of CD4+ T cells in orchestrating cancer immunity. Noninvasive in vivo imaging of the temporal dynamics of CD4+ T cells and their distribution patterns might provide novel insights into their effector and regulator cell functions during cancer immunotherapy (CIT). Methods: We conducted a comparative analysis of 89Zr-labeled anti-mouse (m) and anti-human (h) CD4-targeting minibodies (Mbs) for in vivo positron emission tomography (PET)/magnetic resonance imaging (MRI) of CD4+ T cells in human xenografts, syngeneic tumor-bearing wild-type (WT), and human CD4+ knock-in (hCD4-KI) mouse models. Results: Both 89Zr-CD4-Mbs yielded high radiolabeling efficiencies of >90%, immunoreactivities of >70%, and specific in vitro binding to their target antigens. The specificity of in vivo targeting of 89Zr-hCD4-Mb was confirmed by PET/MRI, revealing ~4-fold greater 89Zr-hCD4-Mb uptake in subcutaneous hCD4+ hematopoietic peripheral blood acute lymphoblastic leukemia tumors (HPB-ALL) than in solid hCD4- diffuse histiocytic lymphomas (DHL) and 89Zr-mCD4-Mb uptake in hCD4+ HPB-ALL tumors. In a comparative cross-validation study in anti-programmed death ligand (αPD-L1)/anti-4-1BB-treated orthotopic PyMT mammary carcinoma-bearing hCD4-KI and WT mice, we detected 2- to 3-fold enhanced species-specific 89Zr-hCD4-Mb or 89Zr-mCD4-Mb uptake within CD4+ cell-enriched secondary lymphatic organs (lymph nodes and spleens). The 89Zr-hCD4-Mb uptake in the PyMT tumors was more pronounced in hCD4-KI mice compared to the WT control littermates. Most importantly, MC38 adenocarcinoma-bearing mice treated with a combination of αPD-L1 and anti-lymphocyte-activation gene 3 (αLag-3) antibodies exhibited ~1.4-fold higher 89Zr-mCD4-Mb uptake than mice that were not responsive to therapy or sham-treated mice. Conclusion: CD4 PET/MRI enabled monitoring of the CD4+ cell distribution in secondary lymphatic organs and the tumor microenvironment, capable of predicting sensitivity to CIT. Our imaging approach will provide deeper insights into the underlying molecular mechanisms of CD4-directed cancer immunotherapies in preclinical mouse models and is applicable for clinical translation.
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Affiliation(s)
- Stefania Pezzana
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Simone Blaess
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Jule Kortendieck
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Nicole Hemmer
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Bredi Tako
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
- Department of Nuclear Medicine, University Hospital Tuebingen, Eberhard Karls University, Tuebingen, Germany
| | - Claudia Pietura
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Lara Ruoff
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Simon Riel
- Department of Dermatology, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Martin Schaller
- Department of Dermatology, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Irene Gonzalez-Menendez
- Cluster of Excellence iFIT (EXC2180) "Image-Guided and Functionally Instructed Tumor Therapies", University of Tuebingen, Tuebingen, Germany
- Department of Pathology and Neuropathology, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Leticia Quintanilla-Martinez
- Cluster of Excellence iFIT (EXC2180) "Image-Guided and Functionally Instructed Tumor Therapies", University of Tuebingen, Tuebingen, Germany
- Department of Pathology and Neuropathology, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
| | | | | | - Ian Wilson
- ImaginAb, Inglewood, United States of America
| | - Andreas Maurer
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
- Cluster of Excellence iFIT (EXC2180) "Image-Guided and Functionally Instructed Tumor Therapies", University of Tuebingen, Tuebingen, Germany
| | - Bernd J Pichler
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
- Cluster of Excellence iFIT (EXC2180) "Image-Guided and Functionally Instructed Tumor Therapies", University of Tuebingen, Tuebingen, Germany
- German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ) partner site Tuebingen, Tuebingen, Germany
| | - Manfred Kneilling
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
- Cluster of Excellence iFIT (EXC2180) "Image-Guided and Functionally Instructed Tumor Therapies", University of Tuebingen, Tuebingen, Germany
- Department of Dermatology, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
| | - Dominik Sonanini
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
- Cluster of Excellence iFIT (EXC2180) "Image-Guided and Functionally Instructed Tumor Therapies", University of Tuebingen, Tuebingen, Germany
- Department of Medical Oncology and Pneumology, University Hospital Tuebingen, University of Tuebingen, Tuebingen, Germany
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Glazer SE, Kummar S, Mittra E. Illuminating immunotherapy response via precision T cell-targeted PET imaging. Front Med (Lausanne) 2024; 11:1233913. [PMID: 39104861 PMCID: PMC11298440 DOI: 10.3389/fmed.2024.1233913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 06/20/2024] [Indexed: 08/07/2024] Open
Abstract
Traditionally, immunotherapy agent selection and treatment strategies are guided by biopsy-based histological information. However, biopsies are limited in that they are invasive, provide static information regarding the tumor immune microenvironment, and only sample a small part of one tumor site. The tumor microenvironment is dynamic and heterogenous. As a result, the immune milieu at one site may be distinct from other metastatic sites. These factors make identifying which patients are likely to respond to different immunotherapies and which harbor intrinsic resistance mechanisms difficult to identify based on a biopsy alone. As such, there is significant interest in alternative methodologies that better characterize the tumor immune microenvironment and monitor immunotherapy response. PET imaging potentially offers a non-invasive way to characterize the tumor immune microenvironment at the primary tumor and metastases and allow for longitudinal characterization. Herein, we review pre-clinically and clinically tested T cell-targeted PET radiopharmaceuticals, as T cells have been the dominant immunotherapy target, and their utility in both evaluating response to immunotherapy and in understanding the systemic immune response to treatment with immunotherapeutics.
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Affiliation(s)
- Sarah E. Glazer
- Division of Internal Medicine, Oregon Health & Science University, Portland, OR, United States
| | - Shivaani Kummar
- Division of Hematology and Medical Oncology, Knight Cancer Institute, Oregon Health & Science University, Portland, OR, United States
| | - Erik Mittra
- Division of Molecular Imaging and Therapy, Oregon Health & Science University, Portland, OR, United States
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14
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He Y, Yang D, Lin X, Zhang J, Cheng R, Cao L, Yang L, Zhang M, Shi X, Jin X, Sun H, Sun H, Zang J, Li Y, Ma J, Nie H. Neoadjuvant immunochemotherapy improves clinical outcomes of patients with esophageal cancer by mediating anti-tumor immunity of CD8+ T (Tc1) and CD16+ NK cells. Front Immunol 2024; 15:1412693. [PMID: 39076970 PMCID: PMC11284045 DOI: 10.3389/fimmu.2024.1412693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 06/24/2024] [Indexed: 07/31/2024] Open
Abstract
Background Esophageal cancer (ESCA) is one of the most common tumors in the world, and treatment using neoadjuvant therapy (NT) based on radiotherapy and/or chemotherapy has still unsatisfactory results. Neoadjuvant immunochemotherapy (NICT) has also become an effective treatment strategy nowadays. However, its impact on the tumor microenvironment (TME) and regulatory mechanisms on T cells and NK cells needs to be further elucidated. Methods A total of 279 cases of ESCA who underwent surgery alone [non-neoadjuvant therapy (NONE)], neoadjuvant chemotherapy (NCT), and NICT were collected, and their therapeutic effect and survival period were compared. Further, RNA sequencing combined with biological information was used to analyze the expression of immune-related genes. Immunohistochemistry, immunofluorescence, and quantitative real-time PCR (qRT-PCR) were used to verify the activation and infiltration status of CD8+ T and CD16+ NK cells, as well as the function and regulatory pathway of killing tumor cells. Results Patients with ESCA in the NICT group showed better clinical response, median survival, and 2-year survival rates (p < 0.05) compared with the NCT group. Our RNA sequencing data revealed that NICT could promote the expression of immune-related genes. The infiltration and activation of immune cells centered with CD8+ T cells were significantly enhanced. CD8+ T cells activated by PD-1 inhibitors secreted more IFN-γ and cytotoxic effector factor cells through the transcription factor of EOMES and TBX21. At the same time, activated CD8+ T cells mediated the CD16+ NK cell activation and secreted more IFN-γ to kill ESCA cells. In addition, the immunofluorescence co-staining results showed that more CD276+ tumor cells and CD16+ NK cells were existed in pre-NCT and pre-NICT group. However, CD276+ tumor cells were reduced significantly in the post-NICT group, while they still appeared in the post-NCT group, which means that CD16+ NK cells can recognize and kill CD276+ tumor cells after immune checkpoint blocker (ICB) treatment. Conclusion NICT can improve the therapeutic effect and survival period of resectable ESCA patients. NICT could promote the expression of immune-related genes and activate CD8+ T and CD16+ NK cells to secrete more IFN-γ to kill ESCA cells. It provides a theoretical basis and clinical evidence for its potential as an NT strategy in ESCA.
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Affiliation(s)
- Yunlong He
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
- Department of Radiation Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Depeng Yang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Xiaoyu Lin
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Jinfeng Zhang
- Department of Thoracic Surgery, Esophagus and Mediastinum, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Rui Cheng
- State Key Laboratory for Conservation and Utilization of Bio-Resource and School of Life Sciences, Yunnan University, Kunming, Yunnan, China
| | - Liangyu Cao
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Lijun Yang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Mengmeng Zhang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Xinyue Shi
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Xiyun Jin
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Handi Sun
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Haoxiu Sun
- School of Interdisciplinary Medicine and Engineering, Harbin Medical University, Harbin, Heilongjiang, China
| | - Jingyu Zang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Yu Li
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Jianqun Ma
- Department of Thoracic Surgery, Esophagus and Mediastinum, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - Huan Nie
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, China
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15
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Zhang J, Du B, Wang Y, Cui Y, Wang S, Zhao Y, Li Y, Li X. The role of CD8 PET imaging in guiding cancer immunotherapy. Front Immunol 2024; 15:1428541. [PMID: 39072335 PMCID: PMC11272484 DOI: 10.3389/fimmu.2024.1428541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 06/27/2024] [Indexed: 07/30/2024] Open
Abstract
Currently, immunotherapy is being widely used for treating cancers. However, the significant heterogeneity in patient responses is a major challenge for its successful application. CD8-positive T cells (CD8+ T cells) play a critical role in immunotherapy. Both their infiltration and functional status in tumors contribute to treatment outcomes. Therefore, accurate monitoring of CD8+ T cells, a potential biomarker, may improve therapeutic strategy. Positron emission tomography (PET) is an optimal option which can provide molecular imaging with enhanced specificity. This review summarizes the mechanism of action of CD8+ T cells in immunotherapy, and highlights the recent advancements in PET-based tracers that can visualize CD8+ T cells and discusses their clinical applications to elucidate their potential role in cancer immunotherapy.
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Affiliation(s)
| | | | | | | | | | | | - Yaming Li
- Department of Nuclear Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xuena Li
- Department of Nuclear Medicine, The First Hospital of China Medical University, Shenyang, Liaoning, China
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16
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Toledano Zur R, Atar O, Barliya T, Hoogi S, Abramovich I, Gottlieb E, Ron-Harel N, Cohen CJ. Genetically engineering glycolysis in T cells increases their antitumor function. J Immunother Cancer 2024; 12:e008434. [PMID: 38964783 PMCID: PMC11227835 DOI: 10.1136/jitc-2023-008434] [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] [Accepted: 05/20/2024] [Indexed: 07/06/2024] Open
Abstract
BACKGROUND T cells play a central role in the antitumor response. However, they often face numerous hurdles in the tumor microenvironment, including the scarcity of available essential metabolites such as glucose and amino acids. Moreover, cancer cells can monopolize these resources to thrive and proliferate by upregulating metabolite transporters and maintaining a high metabolic rate, thereby outcompeting T cells. METHODS Herein, we sought to improve T-cell antitumor function in the tumor vicinity by enhancing their glycolytic capacity to better compete with tumor cells. To achieve this, we engineered human T cells to express a key glycolysis enzyme, phosphofructokinase, in conjunction with Glucose transporter 3, a glucose transporter. We co-expressed these, along with tumor-specific chimeric antigen or T-cell receptors. RESULTS Engineered cells demonstrated an increased cytokine secretion and upregulation of T-cell activation markers compared with control cells. Moreover, they displayed superior glycolytic capacity, which translated into an improved in vivo therapeutic potential in a xenograft model of human tumors. CONCLUSION In summary, these findings support the implementation of T-cell metabolic engineering to enhance the efficacy of cellular immunotherapies for cancer.
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Affiliation(s)
| | - Orna Atar
- Technion Israel Institute of Technology, Haifa, Haifa, Israel
| | | | | | - Ifat Abramovich
- Technion Israel Institute of Technology, Haifa, Haifa, Israel
| | - Eyal Gottlieb
- Technion Israel Institute of Technology, Haifa, Haifa, Israel
| | - Noga Ron-Harel
- Technion Israel Institute of Technology, Haifa, Haifa, Israel
| | - Cyrille J Cohen
- Faculty of Life Sciences, Bar-Ilan University, Ramat Gan, Tel Aviv, Israel
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Badier L, Quelven I. Zirconium 89 and Copper 64 for ImmunoPET: From Antibody Bioconjugation and Radiolabeling to Molecular Imaging. Pharmaceutics 2024; 16:882. [PMID: 39065579 PMCID: PMC11279968 DOI: 10.3390/pharmaceutics16070882] [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: 04/30/2024] [Revised: 06/15/2024] [Accepted: 06/24/2024] [Indexed: 07/28/2024] Open
Abstract
Immunotherapy has transformed cancer treatment. Nevertheless, given the heterogeneity of clinical efficacy, the multiplicity of treatment options available and the possibility of serious adverse effects, selecting the most effective treatment has become the greatest challenge. Molecular imaging offers an attractive way for this purpose. ImmunoPET provides specific imaging with positron emission tomography (PET) using monoclonal antibodies (mAb) or its fragments as vector. By combining the high targeting specificity of mAb and the sensitivity of PET technique, immunoPET could noninvasively and dynamically reveal tumor antigens expression and provide theranostic tools of several types of malignancies. Because of their slow kinetics, mAbs require radioelements defined by a consistent half-life. Zirconium 89 (89Zr) and Copper 64 (64Cu) are radiometals with half-lives suitable for mAb labeling. Radiolabeling with a radiometal requires the prior use of a bifunctional chelate agent (BFCA) to functionalize mAb for radiometal chelation, in a second step. There are a number of BFCA available and much research is focused on antibody functionalization techniques or on developing the optimum chelating agent depending the selected radiometal. In this manuscript, we present a critical account of radiochemical techniques with radionuclides 89Zr and 64Cu and their applications in preclinical and clinical immuno-PET imaging.
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Affiliation(s)
| | - Isabelle Quelven
- Toulouse NeuroImaging Center (ToNIC), INSERM/UPS UMR 1214, University Hospital of Toulouse-Purpan, CEDEX 3, 31024 Toulouse, France;
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18
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Li X, Eastham J, Giltnane JM, Zou W, Zijlstra A, Tabatsky E, Banchereau R, Chang CW, Nabet BY, Patil NS, Molinero L, Chui S, Harryman M, Lau S, Rangell L, Waumans Y, Kockx M, Orlova D, Koeppen H. Automated tumor immunophenotyping predicts clinical benefit from anti-PD-L1 immunotherapy. J Pathol 2024; 263:190-202. [PMID: 38525811 DOI: 10.1002/path.6274] [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: 07/01/2023] [Revised: 12/22/2023] [Accepted: 02/14/2024] [Indexed: 03/26/2024]
Abstract
Cancer immunotherapy has transformed the clinical approach to patients with malignancies, as profound benefits can be seen in a subset of patients. To identify this subset, biomarker analyses increasingly focus on phenotypic and functional evaluation of the tumor microenvironment to determine if density, spatial distribution, and cellular composition of immune cell infiltrates can provide prognostic and/or predictive information. Attempts have been made to develop standardized methods to evaluate immune infiltrates in the routine assessment of certain tumor types; however, broad adoption of this approach in clinical decision-making is still missing. We developed approaches to categorize solid tumors into 'desert', 'excluded', and 'inflamed' types according to the spatial distribution of CD8+ immune effector cells to determine the prognostic and/or predictive implications of such labels. To overcome the limitations of this subjective approach, we incrementally developed four automated analysis pipelines of increasing granularity and complexity for density and pattern assessment of immune effector cells. We show that categorization based on 'manual' observation is predictive for clinical benefit from anti-programmed death ligand 1 therapy in two large cohorts of patients with non-small cell lung cancer or triple-negative breast cancer. For the automated analysis we demonstrate that a combined approach outperforms individual pipelines and successfully relates spatial features to pathologist-based readouts and the patient's response to therapy. Our findings suggest that tumor immunophenotype generated by automated analysis pipelines should be evaluated further as potential predictive biomarkers for cancer immunotherapy. © 2024 The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Xiao Li
- Genentech, South San Francisco, CA, USA
| | | | | | - Wei Zou
- Genentech, South San Francisco, CA, USA
| | | | | | | | | | | | | | | | | | | | - Shari Lau
- Genentech, South San Francisco, CA, USA
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19
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Eertink JJ, Bahce I, Waterton JC, Huisman MC, Boellaard R, Wunder A, Thiele A, Menke-van der Houven van Oordt CW. The development process of 'fit-for-purpose' imaging biomarkers to characterize the tumor microenvironment. Front Med (Lausanne) 2024; 11:1347267. [PMID: 38818386 PMCID: PMC11138661 DOI: 10.3389/fmed.2024.1347267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 04/24/2024] [Indexed: 06/01/2024] Open
Abstract
Immune-based treatment approaches are successfully used for the treatment of patients with cancer. While such therapies can be highly effective, many patients fail to benefit. To provide optimal therapy choices and to predict treatment responses, reliable biomarkers for the assessment of immune features in patients with cancer are of significant importance. Biomarkers (BM) that enable a comprehensive and repeatable assessment of the tumor microenvironment (TME), the lymphoid system, and the dynamics induced by drug treatment can fill this gap. Medical imaging, notably positron emission tomography (PET) and magnetic resonance imaging (MRI), providing whole-body imaging BMs, might deliver such BMs. However, those imaging BMs must be well characterized as being 'fit for purpose' for the intended use. This review provides an overview of the key steps involved in the development of 'fit-for-purpose' imaging BMs applicable in drug development, with a specific focus on pharmacodynamic biomarkers for assessing the TME and its modulation by immunotherapy. The importance of the qualification of imaging BMs according to their context of use (COU) as defined by the Food and Drug Administration (FDA) and National Institutes of Health Biomarkers, EndpointS, and other Tools (BEST) glossary is highlighted. We elaborate on how an imaging BM qualification for a specific COU can be achieved.
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Affiliation(s)
- Jakoba J. Eertink
- Department of Medical Oncology, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Imaging and Biomarkers, Cancer Center Amsterdam, Amsterdam, Netherlands
| | - Idris Bahce
- Imaging and Biomarkers, Cancer Center Amsterdam, Amsterdam, Netherlands
- Department of Pulmonary Medicine, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - John C. Waterton
- Centre for Imaging Sciences, University of Manchester, Manchester, United Kingdom
| | - Marc C. Huisman
- Imaging and Biomarkers, Cancer Center Amsterdam, Amsterdam, Netherlands
- Department of Radiology and Nuclear Medicine, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Ronald Boellaard
- Imaging and Biomarkers, Cancer Center Amsterdam, Amsterdam, Netherlands
- Department of Radiology and Nuclear Medicine, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Andreas Wunder
- Department of Translational Medicine and Clinical Pharmacology, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach and der Riss, Germany
| | - Andrea Thiele
- Department of Translational Medicine and Clinical Pharmacology, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach and der Riss, Germany
| | - Catharina W. Menke-van der Houven van Oordt
- Department of Medical Oncology, Amsterdam UMC Location Vrije Universiteit Amsterdam, Amsterdam, Netherlands
- Imaging and Biomarkers, Cancer Center Amsterdam, Amsterdam, Netherlands
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20
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Malviya G, Lannagan TR, Johnson E, Mackintosh A, Bielik R, Peters A, Soloviev D, Brown G, Jackstadt R, Nixon C, Gilroy K, Campbell A, Sansom OJ, Lewis DY. Noninvasive Stratification of Colon Cancer by Multiplex PET Imaging. Clin Cancer Res 2024; 30:1518-1529. [PMID: 38493804 PMCID: PMC11016897 DOI: 10.1158/1078-0432.ccr-23-1063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 06/30/2023] [Accepted: 02/14/2024] [Indexed: 03/19/2024]
Abstract
PURPOSE The current approach for molecular subtyping of colon cancer relies on gene expression profiling, which is invasive and has limited ability to reveal dynamics and spatial heterogeneity. Molecular imaging techniques, such as PET, present a noninvasive alternative for visualizing biological information from tumors. However, the factors influencing PET imaging phenotype, the suitable PET radiotracers for differentiating tumor subtypes, and the relationship between PET phenotypes and tumor genotype or gene expression-based subtyping remain unknown. EXPERIMENTAL DESIGN In this study, we conducted 126 PET scans using four different metabolic PET tracers, [18F]fluorodeoxy-D-glucose ([18F]FDG), O-(2-[18F]fluoroethyl)-l-tyrosine ([18F]FET), 3'-deoxy-3'-[18F]fluorothymidine ([18F]FLT), and [11C]acetate ([11C]ACE), using a spectrum of five preclinical colon cancer models with varying genetics (BMT, AKPN, AK, AKPT, KPN), at three sites (subcutaneous, orthograft, autochthonous) and at two tumor stages (primary vs. metastatic). RESULTS The results demonstrate that imaging signatures are influenced by genotype, tumor environment, and stage. PET imaging signatures exhibited significant heterogeneity, with each cancer model displaying distinct radiotracer profiles. Oncogenic Kras and Apc loss showed the most distinctive imaging features, with [18F]FLT and [18F]FET being particularly effective, respectively. The tissue environment notably impacted [18F]FDG uptake, and in a metastatic model, [18F]FET demonstrated higher uptake. CONCLUSIONS By examining factors contributing to PET-imaging phenotype, this study establishes the feasibility of noninvasive molecular stratification using multiplex radiotracer PET. It lays the foundation for further exploration of PET-based subtyping in human cancer, thereby facilitating noninvasive molecular diagnosis.
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Affiliation(s)
- Gaurav Malviya
- Cancer Research UK Scotland Institute, Garscube Estate, Glasgow, United Kingdom
- School of Cancer Sciences, University of Glasgow; Glasgow, United Kingdom
| | | | - Emma Johnson
- Cancer Research UK Scotland Institute, Garscube Estate, Glasgow, United Kingdom
| | - Agata Mackintosh
- Cancer Research UK Scotland Institute, Garscube Estate, Glasgow, United Kingdom
| | - Robert Bielik
- Cancer Research UK Scotland Institute, Garscube Estate, Glasgow, United Kingdom
| | - Adam Peters
- Cancer Research UK Scotland Institute, Garscube Estate, Glasgow, United Kingdom
| | - Dmitry Soloviev
- Cancer Research UK Scotland Institute, Garscube Estate, Glasgow, United Kingdom
| | - Gavin Brown
- Cancer Research UK Scotland Institute, Garscube Estate, Glasgow, United Kingdom
| | - Rene Jackstadt
- Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM gGmbH), Heidelberg, Germany
- Cancer Progression and Metastasis Group, German Cancer Research Center (DKFZ), and DKFZ-ZMBH Alliance, Heidelberg, Germany. German Cancer Consortium (DKTK), Germany
| | - Colin Nixon
- Cancer Research UK Scotland Institute, Garscube Estate, Glasgow, United Kingdom
| | - Kathryn Gilroy
- Cancer Research UK Scotland Institute, Garscube Estate, Glasgow, United Kingdom
| | - Andrew Campbell
- Cancer Research UK Scotland Institute, Garscube Estate, Glasgow, United Kingdom
| | - Owen J. Sansom
- Cancer Research UK Scotland Institute, Garscube Estate, Glasgow, United Kingdom
- School of Cancer Sciences, University of Glasgow; Glasgow, United Kingdom
| | - David Y. Lewis
- Cancer Research UK Scotland Institute, Garscube Estate, Glasgow, United Kingdom
- School of Cancer Sciences, University of Glasgow; Glasgow, United Kingdom
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21
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Honda CK, Kurozumi S, Fujii T, Pourquier D, Khellaf L, Boissiere F, Horiguchi J, Oyama T, Shirabe K, Colinge J, Yokobori T, Turtoi A. Cancer-associated fibroblast spatial heterogeneity and EMILIN1 expression in the tumor microenvironment modulate TGF-β activity and CD8 + T-cell infiltration in breast cancer. Theranostics 2024; 14:1873-1885. [PMID: 38505604 PMCID: PMC10945331 DOI: 10.7150/thno.90627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 02/13/2024] [Indexed: 03/21/2024] Open
Abstract
Rationale: The tumor microenvironment (TME) and its multifaceted interactions with cancer cells are major targets for cancer treatment. Single-cell technologies have brought major insights into the TME, but the resulting complexity often precludes conclusions on function. Methods: We combined single-cell RNA sequencing and spatial transcriptomic data to explore the relationship between different cancer-associated fibroblast (CAF) populations and immune cell exclusion in breast tumors. The significance of the findings was then evaluated in a cohort of tumors (N=75) from breast cancer patients using immunohistochemistry analysis. Results: Our data show for the first time the degree of spatial organization of different CAF populations in breast cancer. We found that IL-iCAFs, Detox-iCAFs, and IFNγ-iCAFs tended to cluster together, while Wound-myCAFs, TGFβ-myCAFs, and ECM-myCAFs formed another group that overlapped with elevated TGF-β signaling. Differential gene expression analysis of areas with CD8+ T-cell infiltration/exclusion within the TGF-β signaling-rich zones identified elastin microfibrillar interface protein 1 (EMILIN1) as a top modulated gene. EMILIN1, a TGF-β inhibitor, was upregulated in IFNγ-iCAFs directly modulating TGFβ immunosuppressive function. Histological analysis of 75 breast cancer samples confirmed that high EMILIN1 expression in the tumor margins was related to high CD8+ T-cell infiltration, consistent with our spatial gene expression analysis. High EMILIN1 expression was also associated with better prognosis of patients with breast cancer, underscoring its functional significance for the recruitment of cytotoxic T cells into the tumor area. Conclusion: Our data show that correlating TGF-β signaling to a CAF subpopulation is not enough because proteins with TGF-β-modulating activity originating from other CAF subpopulations can alter its activity. Therefore, therapeutic targeting should remain focused on biological processes rather than on specific CAF subtypes.
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Affiliation(s)
- Chikako Kanno Honda
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Sasagu Kurozumi
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- Department of Breast Surgery, International University of Health and Welfare, Chiba, Japan
| | - Takaaki Fujii
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Didier Pourquier
- Institut régional du Cancer de Montpellier (ICM)-Val d'Aurelle, Montpellier, France
- Tumor Microenvironment and Resistance to Treatment Lab, INSERM U1194, Montpellier, France
- Université de Montpellier, Montpellier, France
| | - Lakhdar Khellaf
- Institut régional du Cancer de Montpellier (ICM)-Val d'Aurelle, Montpellier, France
- Tumor Microenvironment and Resistance to Treatment Lab, INSERM U1194, Montpellier, France
- Université de Montpellier, Montpellier, France
| | - Florence Boissiere
- Institut régional du Cancer de Montpellier (ICM)-Val d'Aurelle, Montpellier, France
| | - Jun Horiguchi
- Department of Breast Surgery, International University of Health and Welfare, Chiba, Japan
| | - Tetsunari Oyama
- Department of Pathology and Diagnostics, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Ken Shirabe
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Jacques Colinge
- Institut régional du Cancer de Montpellier (ICM)-Val d'Aurelle, Montpellier, France
- Université de Montpellier, Montpellier, France
- Cancer Bioinformatics and Systems Biology Team, INSERM U1194, Montpellier, France
| | - Takehiko Yokobori
- Division of Integrated Oncology Research, Gunma University, Initiative for Advanced Research (GIAR), Maebashi, Gunma, Japan
| | - Andrei Turtoi
- Institut régional du Cancer de Montpellier (ICM)-Val d'Aurelle, Montpellier, France
- Tumor Microenvironment and Resistance to Treatment Lab, INSERM U1194, Montpellier, France
- Université de Montpellier, Montpellier, France
- Division of Integrated Oncology Research, Gunma University, Initiative for Advanced Research (GIAR), Maebashi, Gunma, Japan
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Mohr P, van Sluis J, Lub-de Hooge MN, Lammertsma AA, Brouwers AH, Tsoumpas C. Advances and challenges in immunoPET methodology. FRONTIERS IN NUCLEAR MEDICINE (LAUSANNE, SWITZERLAND) 2024; 4:1360710. [PMID: 39355220 PMCID: PMC11440922 DOI: 10.3389/fnume.2024.1360710] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 02/05/2024] [Indexed: 10/03/2024]
Abstract
Immuno-positron emission tomography (immunoPET) enables imaging of specific targets that play a role in targeted therapy and immunotherapy, such as antigens on cell membranes, targets in the disease microenvironment, or immune cells. The most common immunoPET applications use a monoclonal antibody labeled with a relatively long-lived positron emitter such as 89Zr (T 1/2 = 78.4 h), but smaller antibody-based constructs labeled with various other positron emitting radionuclides are also being investigated. This molecular imaging technique can thus guide the development of new drugs and may have a pivotal role in selecting patients for a particular therapy. In early phase immunoPET trials, multiple imaging time points are used to examine the time-dependent biodistribution and to determine the optimal imaging time point, which may be several days after tracer injection due to the slow kinetics of larger molecules. Once this has been established, usually only one static scan is performed and semi-quantitative values are reported. However, total PET uptake of a tracer is the sum of specific and nonspecific uptake. In addition, uptake may be affected by other factors such as perfusion, pre-/co-administration of the unlabeled molecule, and the treatment schedule. This article reviews imaging methodologies used in immunoPET studies and is divided into two parts. The first part summarizes the vast majority of clinical immunoPET studies applying semi-quantitative methodologies. The second part focuses on a handful of studies applying pharmacokinetic models and includes preclinical and simulation studies. Finally, the potential and challenges of immunoPET quantification methodologies are discussed within the context of the recent technological advancements provided by long axial field of view PET/CT scanners.
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Affiliation(s)
- Philipp Mohr
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Joyce van Sluis
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Marjolijn N Lub-de Hooge
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Adriaan A Lammertsma
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Adrienne H Brouwers
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Charalampos Tsoumpas
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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Spiliopoulou P, Kaur P, Hammett T, Di Conza G, Lahn M. Targeting T regulatory (T reg) cells in immunotherapy-resistant cancers. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2024; 7:2. [PMID: 38318526 PMCID: PMC10838381 DOI: 10.20517/cdr.2023.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 12/11/2023] [Accepted: 01/09/2024] [Indexed: 02/07/2024]
Abstract
Primary or secondary (i.e., acquired) resistance is a common occurrence in cancer patients and is often associated with high numbers of T regulatory (Treg) cells (CD4+CD25+FOXP3+). The approval of ipilimumab and the development of similar pharmacological agents targeting cell surface proteins on Treg cells demonstrates that such intervention may overcome resistance in cancer patients. Hence, the clinical development and subsequent approval of Cytotoxic T Lymphocyte Antigen-4 (CTLA-4) targeting agents can serve as a prototype for similar agents. Such new agents aspire to be highly specific and have a reduced toxicity profile while increasing effector T cell function or effector T/T regulatory (Teff/Treg) ratio. While clinical development with large molecules has shown the greatest advancement, small molecule inhibitors that target immunomodulation are increasingly entering early clinical investigation. These new small molecule inhibitors often target specific intracellular signaling pathways [e.g., phosphoinositide-3-kinase delta (PI3K-δ)] that play an important role in regulating the function of Treg cells. This review will summarize the lessons currently applied to develop novel clinical agents that target Treg cells.
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Affiliation(s)
- Pavlina Spiliopoulou
- Department of Drug Development Program, Phase I Unit, Beatson West of Scotland Cancer Center, Glasgow G12 0YN, UK
- School of Cancer Sciences, University of Glasgow, Glasgow G61 1BD, UK
| | - Paramjit Kaur
- Department of Oncology Clinical Development, iOnctura SA, Geneva 1202, Switzerland
| | - Tracey Hammett
- Department of Oncology Clinical Development, iOnctura SA, Geneva 1202, Switzerland
| | - Giusy Di Conza
- Department of Oncology Clinical Development, iOnctura SA, Geneva 1202, Switzerland
| | - Michael Lahn
- Department of Oncology Clinical Development, iOnctura SA, Geneva 1202, Switzerland
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24
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Li K, Liu W, Yu H, Chen J, Tang W, Wang J, Qi M, Sun Y, Xu X, Zhang J, Li X, Guo W, Li X, Song S, Tang S. 68Ga-FAPI PET imaging monitors response to combined TGF-βR inhibition and immunotherapy in metastatic colorectal cancer. J Clin Invest 2024; 134:e170490. [PMID: 38175716 PMCID: PMC10866654 DOI: 10.1172/jci170490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 12/29/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUNDImproving and predicting tumor response to immunotherapy remains challenging. Combination therapy with a transforming growth factor-β receptor (TGF-βR) inhibitor that targets cancer-associated fibroblasts (CAFs) is promising for the enhancement of efficacy of immunotherapies. However, the effect of this approach in clinical trials is limited, requiring in vivo methods to better assess tumor responses to combination therapy.METHODSWe measured CAFs in vivo using the 68Ga-labeled fibroblast activation protein inhibitor-04 (68Ga-FAPI-04) for PET/CT imaging to guide the combination of TGF-β inhibition and immunotherapy. One hundred thirty-one patients with metastatic colorectal cancer (CRC) underwent 68Ga-FAPI and 18F-fluorodeoxyglucose (18F-FDG) PET/CT imaging. The relationship between uptake of 68Ga-FAPI and tumor immunity was analyzed in patients. Mouse cohorts of metastatic CRC were treated with the TGF-βR inhibitor combined with KN046, which blocks programmed death ligand 1 (PD-L1) and CTLA-4, followed by 68Ga-FAPI and 18F-FDG micro-PET/CT imaging to assess tumor responses.RESULTSPatients with metastatic CRC demonstrated high uptake rates of 68Ga-FAPI, along with suppressive tumor immunity and poor prognosis. The TGF-βR inhibitor enhanced tumor-infiltrating T cells and significantly sensitized metastatic CRC to KN046. 68Ga-FAPI PET/CT imaging accurately monitored the dynamic changes of CAFs and tumor response to combined the TGF-βR inhibitor with immunotherapy.CONCLUSION68Ga-FAPI PET/CT imaging is powerful in assessing tumor immunity and the response to immunotherapy in metastatic CRC. This study supports future clinical application of 68Ga-FAPI PET/CT to guide precise TGF-β inhibition plus immunotherapy in CRC patients, recommending 68Ga-FAPI and 18F-FDG dual PET/CT for CRC management.TRIAL REGISTRATIONCFFSTS Trial, ChiCTR2100053984, Chinese Clinical Trial Registry.FUNDINGNational Natural Science Foundation of China (82072695, 32270767, 82272035, 81972260).
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Affiliation(s)
- Ke Li
- Cancer Institute, Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
- Center for Biomedical Imaging, Fudan University, Shanghai, China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, China
- Department of Oncology and
| | - Wei Liu
- Cancer Institute, Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
- Center for Biomedical Imaging, Fudan University, Shanghai, China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, China
- Department of Oncology and
| | - Hang Yu
- Cancer Institute, Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
- Center for Biomedical Imaging, Fudan University, Shanghai, China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, China
- Department of Oncology and
| | - Jiwei Chen
- Cancer Institute, Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Wenxuan Tang
- Cancer Institute, Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
- School of Clinical Medicine, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jianpeng Wang
- Department of Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Ming Qi
- Cancer Institute, Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
- Center for Biomedical Imaging, Fudan University, Shanghai, China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, China
- Department of Oncology and
| | - Yuyun Sun
- Cancer Institute, Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
- Center for Biomedical Imaging, Fudan University, Shanghai, China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, China
- Department of Oncology and
| | - Xiaoping Xu
- Cancer Institute, Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
- Center for Biomedical Imaging, Fudan University, Shanghai, China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, China
- Department of Oncology and
| | - Ji Zhang
- Cancer Institute, Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
- Center for Biomedical Imaging, Fudan University, Shanghai, China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, China
- Department of Oncology and
| | - Xinxiang Li
- Department of Oncology and
- Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Weijian Guo
- Department of Oncology and
- Department of Gastrointestinal Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Xiaoling Li
- Signal Transduction Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA
| | - Shaoli Song
- Cancer Institute, Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
- Center for Biomedical Imaging, Fudan University, Shanghai, China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, China
- Department of Oncology and
| | - Shuang Tang
- Cancer Institute, Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
- Center for Biomedical Imaging, Fudan University, Shanghai, China
- Shanghai Engineering Research Center of Molecular Imaging Probes, Shanghai, China
- Department of Oncology and
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25
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Gallegos CA, Lu Y, Clements JC, Song PN, Lynch SE, Mascioni A, Jia F, Hartman YE, Massicano AVF, Houson HA, Lapi SE, Warram JM, Markert JM, Sorace AG. [ 89Zr]-CD8 ImmunoPET imaging of glioblastoma multiforme response to combination oncolytic viral and checkpoint inhibitor immunotherapy reveals CD8 infiltration differential changes in preclinical models. Theranostics 2024; 14:911-923. [PMID: 38250045 PMCID: PMC10797292 DOI: 10.7150/thno.89206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 12/06/2023] [Indexed: 01/23/2024] Open
Abstract
Rationale: Novel immune-activating therapeutics for the treatment of glioblastoma multiforme (GBM) have shown potential for tumor regression and increased survival over standard therapies. However, immunotherapy efficacy remains inconsistent with response assessment being complicated by early treatment-induced apparent radiological tumor progression and slow downstream effects. This inability to determine early immunotherapeutic benefit results in a drastically decreased window for alternative, and potentially more effective, treatment options. The objective of this study is to evaluate the effects of combination immunotherapy on early CD8+ cell infiltration and its association with long term response in orthotopic syngeneic glioblastoma models. Methods: Luciferase positive GBM orthotopic mouse models (GSC005-luc) were imaged via [89Zr]-CD8 positron emission tomography (PET) one week following treatment with saline, anti-PD1, M002 oncolytic herpes simplex virus (oHSV) or combination immunotherapy. Subsequently, brains were excised, imaged via [89Zr]-CD8 ImmunoPET and evaluated though autoradiography and histology for H&E and CD8 immunohistochemistry. Longitudinal immunotherapeutic effects were evaluated through [89Zr]-CD8 PET imaging one- and three-weeks following treatment, with changes in tumor volume monitored on a three-day basis via bioluminescence imaging (BLI). Response classification was then performed based on long-term BLI signal changes. Statistical analysis was performed between groups using one-way ANOVA and two-sided unpaired T-test, with p < 0.05 considered significant. Correlations between imaging and biological validation were assessed via Pearson's correlation test. Results: [89Zr]-CD8 PET standardized uptake value (SUV) quantification was correlated with ex vivo SUV quantification (r = 0.61, p < 0.01), autoradiography (r = 0.46, p < 0.01), and IHC tumor CD8+ cell density (r = 0.55, p < 0.01). Classification of therapeutic responders, via bioluminescence signal, revealed a more homogeneous CD8+ immune cell distribution in responders (p < 0.05) one-week following immunotherapy. Conclusions: Assessment of early CD8+ cell infiltration and distribution in the tumor microenvironment provides potential imaging metrics for the characterization of oHSV and checkpoint blockade immunotherapy response in GBM. The combination therapies showed enhanced efficacy compared to single agent immunotherapies. Further development of immune-focused imaging methods can provide clinically relevant metrics associated with immune cell localization that can inform immunotherapeutic efficacy and subsequent treatment response in GBM patients.
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Affiliation(s)
- Carlos A. Gallegos
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Yun Lu
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL, USA
- Graduate Biomedical Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jennifer C. Clements
- Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Patrick N. Song
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL, USA
- Graduate Biomedical Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Shannon E. Lynch
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL, USA
- Graduate Biomedical Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Fang Jia
- Imaginab, Inc, Inglewood, CA, USA
| | - Yolanda E. Hartman
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Hailey A. Houson
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Suzanne E. Lapi
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, AL, USA
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jason M. Warram
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Otolaryngology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - James M. Markert
- Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Anna G. Sorace
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL, USA
- O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
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26
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Saliby RM, Saad E, Kashima S, Schoenfeld DA, Braun DA. Update on Biomarkers in Renal Cell Carcinoma. Am Soc Clin Oncol Educ Book 2024; 44:e430734. [PMID: 38207251 DOI: 10.1200/edbk_430734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Immune checkpoint inhibitors have significantly transformed the treatment paradigm for metastatic renal cell carcinoma (RCC), offering prolonged overall survival and achieving remarkable deep and durable responses. However, given the multiple ICI-containing, standard-of-care regimens approved for RCC, identifying biomarkers that predict therapeutic response and resistance is of critical importance. Although tumor-intrinsic features such as pathological characteristics, genomic alterations, and transcriptional signatures have been extensively investigated, they have yet to provide definitive, robust predictive biomarkers. Current research is exploring host factors through in-depth characterization of the immune system. Additionally, innovative technological approaches are being developed to overcome challenges presented by existing techniques, such as tumor heterogeneity. Promising avenues in biomarker discovery include the study of the microbiome, radiomics, and spatial transcriptomics.
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Affiliation(s)
- Renée M Saliby
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
- Yale Center of Cellular and Molecular Oncology, Yale Cancer Center, Yale School of Medicine, New Haven, CT
| | - Eddy Saad
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | - Soki Kashima
- Yale Center of Cellular and Molecular Oncology, Yale Cancer Center, Yale School of Medicine, New Haven, CT
| | - David A Schoenfeld
- Section of Medical Oncology, Department of Internal Medicine, Yale School of Medicine, New Haven, CT
| | - David A Braun
- Yale Center of Cellular and Molecular Oncology, Yale Cancer Center, Yale School of Medicine, New Haven, CT
- Section of Medical Oncology, Department of Internal Medicine, Yale School of Medicine, New Haven, CT
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27
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Zhang T, Zhang Y, Zhao Y, Song R, Wang Y, Li K, Zhou H, Wang F, Zhou S, Zhao M, Zhu H, Zhang W, Yang Z, Liu Z. Annotation of CD8 + T-cell function via ICAM-1 imaging identifies FAK inhibition as an adjuvant to augment the antitumor immunity of radiotherapy. Theranostics 2024; 14:699-713. [PMID: 38169608 PMCID: PMC10758046 DOI: 10.7150/thno.90709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 12/09/2023] [Indexed: 01/05/2024] Open
Abstract
Background: Radiotherapy (RT) may trigger systemic antitumor immunity, manifesting as regression of non-irradiated lesions (abscopal effect). Intracellular adhesion molecule-1 (ICAM-1) is a key molecule involved in the abscopal effect of RT. However, the specific function of ICAM-1 in CD8+ T cells during antitumor immune responses remains unclear. Herein, we investigated whether noninvasive imaging of ICAM-1 can be used to annotate CD8+ T-cell function, thereby better selecting combinational therapy to enhance the antitumor immunity induced by RT. Methods: Using knockout mouse models, we investigated the role of ICAM-1 expressed on CD8+ T cells in the antitumor immunity of RT and conducted drug screening guided by ICAM-1-targeted noninvasive imaging. Results: The systemic antitumor effect of RT relies on the expression of ICAM-1 on CD8+ T cells. ICAM-1 expression is essential for CD8+ T-cell activation, proliferation, and effector function. Noninvasive annotation of the proliferation and effector function of CD8+ T cells by ICAM-1-targeted imaging identified VS-6063, a focal adhesion kinase inhibitor, as a new adjuvant to augment systemic antitumor immunity of RT in an immunologically "cold" tumor model. Mechanistically, VS-6063 overcomes the physical barriers in tumors and promotes the migration and infiltration of CD8+ T cells primed by RT into distant tumors. Conclusion: Our findings highlight that molecular imaging of ICAM-1 levels provides a dynamic readout of the proliferation and effector function of tumor-infiltrating CD8+ T cells, which facilitates the high-throughput exploitation of new combinational drugs to maximize the systemic antitumor effect of RT.
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Affiliation(s)
- Ting Zhang
- Department of Radiation Medicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Yining Zhang
- Department of Radiation Medicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Yang Zhao
- Department of Radiation Medicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Rui Song
- Department of Radiation Medicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Yanpu Wang
- Department of Radiation Medicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Kui Li
- Department of Radiation Medicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Haoyi Zhou
- Department of Radiation Medicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Feng Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), Department of Nuclear Medicine, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Shixin Zhou
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Meixin Zhao
- Department of Nuclear Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Hua Zhu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), Department of Nuclear Medicine, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Weifang Zhang
- Department of Nuclear Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Zhi Yang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), Department of Nuclear Medicine, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Zhaofei Liu
- Department of Radiation Medicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Key Laboratory for Research and Evaluation of Radiopharmaceuticals (National Medical Products Administration), Department of Nuclear Medicine, Peking University Cancer Hospital and Institute, Beijing 100142, China
- Department of Nuclear Medicine, Peking University Third Hospital, Beijing 100191, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing 100191, China
- Peking University-Yunnan Baiyao International Medical Research Center, Beijing 100191, China
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28
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Cheng X, Shen J, Xu J, Zhu J, Xu P, Wang Y, Gao M. In vivo clinical molecular imaging of T cell activity. Trends Immunol 2023; 44:1031-1045. [PMID: 37932176 DOI: 10.1016/j.it.2023.10.002] [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: 09/21/2023] [Revised: 10/07/2023] [Accepted: 10/09/2023] [Indexed: 11/08/2023]
Abstract
Tumor immunotherapy is refashioning traditional treatments in the clinic for certain tumors, especially by relying on the activation of T cells. However, the safety and effectiveness of many antitumor immunotherapeutic agents are suboptimal due to difficulties encountered in assessing T cell responses and adjusting treatment regimens accordingly. Here, we review advances in the clinical visualization of T cell activity in vivo, and focus particularly on molecular imaging probes and biomarkers of T cell activation. Current challenges and prospects are also discussed that aim to achieve a better strategy for real-time monitoring of T cell activity, predicting prognoses and responses to tumor immunotherapy, and assessing disease management.
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Affiliation(s)
- Xiaju Cheng
- Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, PR China
| | - Jiahao Shen
- Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, PR China
| | - Jingwei Xu
- Department of Cardiothoracic Surgery, Suzhou Municipal Hospital Institution, Suzhou 215000, PR China.
| | - Jinfeng Zhu
- Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, PR China
| | - Pei Xu
- Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, PR China
| | - Yong Wang
- Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, PR China.
| | - Mingyuan Gao
- Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, PR China.
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29
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Mohr P, van Sluis J, Providência L, van Snick JH, Lub-de Hooge MN, Willemsen AT, Glaudemans AWJM, Boellaard R, Lammertsma AA, Brouwers AH, Tsoumpas C. Long Versus Short Axial Field of View Immuno-PET/CT: Semiquantitative Evaluation for 89Zr-Trastuzumab. J Nucl Med 2023; 64:1815-1820. [PMID: 37536740 DOI: 10.2967/jnumed.123.265621] [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: 02/21/2023] [Revised: 06/20/2023] [Indexed: 08/05/2023] Open
Abstract
The purpose of this study was to quantify any differences between the SUVs of 89Zr immuno-PET scans obtained using a PET/CT system with a long axial field of view (LAFOV; Biograph Vision Quadra) compared to a PET/CT system with a short axial field of view (SAFOV; Biograph Vision) and to evaluate how LAFOV PET scan duration affects image noise and SUV metrics. Methods: Five metastatic breast cancer patients were scanned consecutively on SAFOV and LAFOV PET/CT scanners. Four additional patients were scanned using only LAFOV PET/CT. Scans on both systems lasted approximately 30 min and were acquired 4 d after injection of 37 MBq of 89Zr-trastuzumab. LAFOV list-mode data were reprocessed to obtain images acquired using shorter scan durations (15, 10, 7.5, 5, and 3 min). Volumes of interest were placed in healthy tissues, and tumors were segmented semiautomatically to compare coefficients of variation and to perform Bland-Altman analysis on SUV metrics (SUVmax, SUVpeak, and SUVmean). Results: Using 30-min images, 2 commonly used lesion SUV metrics were higher for SAFOV than for LAFOV PET (SUVmax, 16.2% ± 13.4%, and SUVpeak, 10.1% ± 7.2%), whereas the SUVmean of healthy tissues showed minimal differences (0.7% ± 5.8%). Coefficients of variation in the liver derived from 30-min SAFOV PET were between those of 3- and 5-min LAFOV PET. The smallest SUVmax and SUVpeak differences between SAFOV and LAFOV were found for 3-min LAFOV PET. Conclusion: LAFOV 89Zr immuno-PET showed a lower SUVmax and SUVpeak than SAFOV because of lower image noise. LAFOV PET scan duration may be reduced at the expense of increasing image noise and bias in SUV metrics. Nevertheless, SUVpeak showed only minimal bias when reducing scan duration from 30 to 10 min.
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Affiliation(s)
- Philipp Mohr
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands;
| | - Joyce van Sluis
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Laura Providência
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Johannes H van Snick
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Marjolijn N Lub-de Hooge
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands; and
| | - Antoon T Willemsen
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Andor W J M Glaudemans
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Ronald Boellaard
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Location VUmc, Amsterdam, The Netherlands
| | - Adriaan A Lammertsma
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Adrienne H Brouwers
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Charalampos Tsoumpas
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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30
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Bartos LM, Kirchleitner SV, Kolabas ZI, Quach S, Beck A, Lorenz J, Blobner J, Mueller SA, Ulukaya S, Hoeher L, Horvath I, Wind-Mark K, Holzgreve A, Ruf VC, Gold L, Kunze LH, Kunte ST, Beumers P, Park HE, Antons M, Zatcepin A, Briel N, Hoermann L, Schaefer R, Messerer D, Bartenstein P, Riemenschneider MJ, Lindner S, Ziegler S, Herms J, Lichtenthaler SF, Ertürk A, Tonn JC, von Baumgarten L, Albert NL, Brendel M. Deciphering sources of PET signals in the tumor microenvironment of glioblastoma at cellular resolution. SCIENCE ADVANCES 2023; 9:eadi8986. [PMID: 37889970 PMCID: PMC10610915 DOI: 10.1126/sciadv.adi8986] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 09/26/2023] [Indexed: 10/29/2023]
Abstract
Various cellular sources hamper interpretation of positron emission tomography (PET) biomarkers in the tumor microenvironment (TME). We developed an approach of immunomagnetic cell sorting after in vivo radiotracer injection (scRadiotracing) with three-dimensional (3D) histology to dissect the cellular allocation of PET signals in the TME. In mice with implanted glioblastoma, translocator protein (TSPO) radiotracer uptake per tumor cell was higher compared to tumor-associated microglia/macrophages (TAMs), validated by protein levels. Translation of in vitro scRadiotracing to patients with glioma immediately after tumor resection confirmed higher single-cell TSPO tracer uptake of tumor cells compared to immune cells. Across species, cellular radiotracer uptake explained the heterogeneity of individual TSPO-PET signals. In consideration of cellular tracer uptake and cell type abundance, tumor cells were the main contributor to TSPO enrichment in glioblastoma; however, proteomics identified potential PET targets highly specific for TAMs. Combining cellular tracer uptake measures with 3D histology facilitates precise allocation of PET signals and serves to validate emerging novel TAM-specific radioligands.
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Affiliation(s)
- Laura M. Bartos
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
| | | | - Zeynep Ilgin Kolabas
- Institute for Tissue Engineering and Regenerative Medicine (iTERM), Helmholtz Center, Neuherberg, Munich, Germany
- Institute for Stroke and Dementia Research (ISD), University Hospital of Munich, LMU Munich, Munich, Germany
- Graduate School of Systemic Neurosciences (GSN), Munich, Germany
| | - Stefanie Quach
- Department of Neurosurgery, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Alexander Beck
- Center for Neuropathology and Prion Research, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Julia Lorenz
- Department of Neuropathology, Regensburg University Hospital, Regensburg, Germany
| | - Jens Blobner
- Department of Neurosurgery, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Stephan A. Mueller
- Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
- DZNE–German Center for Neurodegenerative Diseases, Munich, Germany
| | - Selin Ulukaya
- Institute for Tissue Engineering and Regenerative Medicine (iTERM), Helmholtz Center, Neuherberg, Munich, Germany
- Faculty of Biology, Master of Science Program in Molecular and Cellular Biology, Ludwig-Maximilians-Universität München, Planegg, Germany
| | - Luciano Hoeher
- Institute for Tissue Engineering and Regenerative Medicine (iTERM), Helmholtz Center, Neuherberg, Munich, Germany
| | - Izabela Horvath
- Institute for Tissue Engineering and Regenerative Medicine (iTERM), Helmholtz Center, Neuherberg, Munich, Germany
- School of Computation, Information and Technology (CIT), TUM, Boltzmannstr. 3, 85748 Garching, Germany
| | - Karin Wind-Mark
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Adrien Holzgreve
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Viktoria C. Ruf
- Center for Neuropathology and Prion Research, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Lukas Gold
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Lea H. Kunze
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Sebastian T. Kunte
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Philipp Beumers
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Ha Eun Park
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Melissa Antons
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Artem Zatcepin
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
- DZNE–German Center for Neurodegenerative Diseases, Munich, Germany
| | - Nils Briel
- Center for Neuropathology and Prion Research, Faculty of Medicine, LMU Munich, Munich, Germany
- DZNE–German Center for Neurodegenerative Diseases, Munich, Germany
| | - Leonie Hoermann
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Rebecca Schaefer
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Denise Messerer
- Department of Cardiology, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Peter Bartenstein
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | | | - Simon Lindner
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Sibylle Ziegler
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Jochen Herms
- Center for Neuropathology and Prion Research, Faculty of Medicine, LMU Munich, Munich, Germany
- DZNE–German Center for Neurodegenerative Diseases, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Stefan F. Lichtenthaler
- Neuroproteomics, School of Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
- DZNE–German Center for Neurodegenerative Diseases, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Ali Ertürk
- Institute for Tissue Engineering and Regenerative Medicine (iTERM), Helmholtz Center, Neuherberg, Munich, Germany
- Institute for Stroke and Dementia Research (ISD), University Hospital of Munich, LMU Munich, Munich, Germany
- Graduate School of Systemic Neurosciences (GSN), Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Joerg C. Tonn
- Department of Neurosurgery, University Hospital of Munich, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site Munich, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Louisa von Baumgarten
- Department of Neurosurgery, University Hospital of Munich, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site Munich, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Nathalie L. Albert
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site Munich, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Bavarian Cancer Research Center (BZKF), Erlangen, Germany
| | - Matthias Brendel
- Department of Nuclear Medicine, University Hospital of Munich, LMU Munich, Munich, Germany
- DZNE–German Center for Neurodegenerative Diseases, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
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31
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Surendra Panikar S, Shmuel S, Lewis JS, Pereira PMR. PET and Optical Imaging of Caveolin-1 in Gastric Tumors. ACS OMEGA 2023; 8:35884-35892. [PMID: 37810678 PMCID: PMC10552508 DOI: 10.1021/acsomega.3c03614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/05/2023] [Indexed: 10/10/2023]
Abstract
Previous studies have suggested tumoral caveolin-1 (CAV1) as a predictive biomarker for the response to anti-HER2 antibody drug therapies in gastric tumors. In this study, radiolabeled and fluorescently labeled anti-CAV1 antibodies were developed and tested as an immunoPET or optical imaging agent to detect CAV1 in HER2-positive/CAV1-high NCIN87 gastric tumors. The expression of CAV1 receptors in NCIN87 gastric tumors and nontumor murine organs was determined by Western blot. Binding assays were performed to validate the anti-CAV1 antibody specificity for CAV1-expressing NCIN87 cancer cells. Subcutaneous and orthotopic NCIN87 xenografts were used for PET imaging and ex vivo biodistribution of the radioimmunoconjugate. Additional HER2-PET and CAV1-optical imaging was also performed to determine CAV1 in the HER2-positive tumors. 89Zr-labeled anti-CAV1 antibody was able to bind to CAV1-expressing NCIN87 cells with a Bmax value of 2.7 × 103 CAV1 receptors/cell in vitro. ImmunoPET images demonstrated the localization of the antibody in subcutaneous NCIN87 xenografts. In the orthotopic model, CAV1 expression was also observed by optical imaging in the HER2-positive tumors previously imaged with HER2-PET. Ex vivo biodistribution analysis further confirmed these imaging results. The preclinical data from this study demonstrate the potential of using CAV1-PET and optical imaging for detecting gastric tumors.
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Affiliation(s)
- Sandeep Surendra Panikar
- Department
of Radiology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Shayla Shmuel
- Department
of Radiology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Jason S. Lewis
- Department
of Radiology, Memorial Sloan Kettering Cancer
Center, New York, New York 10065, United States
- Department of Pharmacology, Weill Cornell Medical College, New York, New York 10065, United States
- Molecular
Pharmacology Program, Memorial Sloan Kettering
Cancer Center, New York, New York 10065, United States
- Department
of Radiology, Weill Cornell Medical College, New York, New York 10065, United States
- Radiochemistry
and Molecular Imaging Probes Core, Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
| | - Patrícia M. R. Pereira
- Department
of Radiology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri 63110, United States
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32
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Murphy PS, Galette P, van der Aart J, Janiczek RL, Patel N, Brown AP. The role of clinical imaging in oncology drug development: progress and new challenges. Br J Radiol 2023; 96:20211126. [PMID: 37393537 PMCID: PMC10546429 DOI: 10.1259/bjr.20211126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 02/14/2023] [Accepted: 06/06/2023] [Indexed: 07/03/2023] Open
Abstract
In 2008, the role of clinical imaging in oncology drug development was reviewed. The review outlined where imaging was being applied and considered the diverse demands across the phases of drug development. A limited set of imaging techniques was being used, largely based on structural measures of disease evaluated using established response criteria such as response evaluation criteria in solid tumours. Beyond structure, functional tissue imaging such as dynamic contrast-enhanced MRI and metabolic measures using [18F]flourodeoxyglucose positron emission tomography were being increasingly incorporated. Specific challenges related to the implementation of imaging were outlined including standardisation of scanning across study centres and consistency of analysis and reporting. More than a decade on the needs of modern drug development are reviewed, how imaging has evolved to support new drug development demands, the potential to translate state-of-the-art methods into routine tools and what is needed to enable the effective use of this broadening clinical trial toolset. In this review, we challenge the clinical and scientific imaging community to help refine existing clinical trial methods and innovate to deliver the next generation of techniques. Strong industry-academic partnerships and pre-competitive opportunities to co-ordinate efforts will ensure imaging technologies maintain a crucial role delivering innovative medicines to treat cancer.
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Affiliation(s)
| | - Paul Galette
- Telix Pharmaceuticals (US) Inc, Fishers, United States
| | | | | | | | - Andrew P. Brown
- Vale Imaging Consultancy Solutions, Harston, Cambridge, United Kingdom
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Chen Y, Yang C, Sheng L, Jiang H, Song B. The Era of Immunotherapy in Hepatocellular Carcinoma: The New Mission and Challenges of Magnetic Resonance Imaging. Cancers (Basel) 2023; 15:4677. [PMID: 37835371 PMCID: PMC10572030 DOI: 10.3390/cancers15194677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 10/15/2023] Open
Abstract
In recent years, significant advancements in immunotherapy for hepatocellular carcinoma (HCC) have shown the potential to further improve the prognosis of patients with advanced HCC. However, in clinical practice, there is still a lack of effective biomarkers for identifying the patient who would benefit from immunotherapy and predicting the tumor response to immunotherapy. The immune microenvironment of HCC plays a crucial role in tumor development and drug responses. However, due to the complexity of immune microenvironment, currently, no single pathological or molecular biomarker can effectively predict tumor responses to immunotherapy. Magnetic resonance imaging (MRI) images provide rich biological information; existing studies suggest the feasibility of using MRI to assess the immune microenvironment of HCC and predict tumor responses to immunotherapy. Nevertheless, there are limitations, such as the suboptimal performance of conventional MRI sequences, incomplete feature extraction in previous deep learning methods, and limited interpretability. Further study needs to combine qualitative features, quantitative parameters, multi-omics characteristics related to the HCC immune microenvironment, and various deep learning techniques in multi-center research cohorts. Subsequently, efforts should also be undertaken to construct and validate a visual predictive tool of tumor response, and assess its predictive value for patient survival benefits. Additionally, future research endeavors must aim to provide an accurate, efficient, non-invasive, and highly interpretable method for predicting the effectiveness of immune therapy.
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Affiliation(s)
- Yidi Chen
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610064, China; (Y.C.); (C.Y.); (L.S.)
| | - Chongtu Yang
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610064, China; (Y.C.); (C.Y.); (L.S.)
| | - Liuji Sheng
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610064, China; (Y.C.); (C.Y.); (L.S.)
| | - Hanyu Jiang
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610064, China; (Y.C.); (C.Y.); (L.S.)
| | - Bin Song
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610064, China; (Y.C.); (C.Y.); (L.S.)
- Department of Radiology, Sanya People’s Hospital, Sanya 572000, China
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34
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Ma X, Mao M, He J, Liang C, Xie HY. Nanoprobe-based molecular imaging for tumor stratification. Chem Soc Rev 2023; 52:6447-6496. [PMID: 37615588 DOI: 10.1039/d3cs00063j] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
The responses of patients to tumor therapies vary due to tumor heterogeneity. Tumor stratification has been attracting increasing attention for accurately distinguishing between responders to treatment and non-responders. Nanoprobes with unique physical and chemical properties have great potential for patient stratification. This review begins by describing the features and design principles of nanoprobes that can visualize specific cell types and biomarkers and release inflammatory factors during or before tumor treatment. Then, we focus on the recent advancements in using nanoprobes to stratify various therapeutic modalities, including chemotherapy, radiotherapy (RT), photothermal therapy (PTT), photodynamic therapy (PDT), chemodynamic therapy (CDT), ferroptosis, and immunotherapy. The main challenges and perspectives of nanoprobes in cancer stratification are also discussed to facilitate probe development and clinical applications.
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Affiliation(s)
- Xianbin Ma
- School of Medical Technology, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Mingchuan Mao
- School of Medical Technology, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Jiaqi He
- School of Life Science, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Chao Liang
- School of Life Science, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Hai-Yan Xie
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Chemical Biology Center, Peking University, Beijing, 100191, P. R. China.
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35
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Ishibashi M, Takahashi M, Yamaya T, Imai Y. Current and Future PET Imaging for Multiple Myeloma. Life (Basel) 2023; 13:1701. [PMID: 37629558 PMCID: PMC10455506 DOI: 10.3390/life13081701] [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: 06/07/2023] [Revised: 07/26/2023] [Accepted: 08/05/2023] [Indexed: 08/27/2023] Open
Abstract
Positron emission tomography (PET) is an imaging modality used for the noninvasive assessment of tumor staging and response to therapy. PET with 18F labeled fluorodeoxyglucose (18F-FDG PET) is widely used to assess the active and inactive lesions in patients with multiple myeloma (MM). Despite the availability of 18F-FDG PET for the management of MM, PET imaging is less sensitive than next-generation flow cytometry and sequencing. Therefore, the novel PET radiotracers 64Cu-LLP2A, 68Ga-pentixafor, and 89Zr-daratumumab have been developed to target the cell surface antigens of MM cells. Furthermore, recent studies attempted to visualize the tumor-infiltrating lymphocytes using PET imaging in patients with cancer to investigate their prognostic effect; however, these studies have not yet been performed in MM patients. This review summarizes the recent studies on PET with 18F-FDG and novel radiotracers for the detection of MM and the resulting preclinical research using MM mouse models and clinical studies. Novel PET technologies may be useful for developing therapeutic strategies for MM in the future.
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Affiliation(s)
- Mariko Ishibashi
- Department of Microbiology and Immunology, Nippon Medical School, Tokyo 113-8602, Japan;
| | - Miwako Takahashi
- Department of Advanced Nuclear Medicine Sciences, Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (M.T.); (T.Y.)
| | - Taiga Yamaya
- Department of Advanced Nuclear Medicine Sciences, Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan; (M.T.); (T.Y.)
| | - Yoichi Imai
- Department of Hematology and Oncology, Dokkyo Medical University, Tochigi 321-0293, Japan
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36
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de Jong D, Desperito E, Al Feghali KA, Dercle L, Seban RD, Das JP, Ma H, Sajan A, Braumuller B, Prendergast C, Liou C, Deng A, Roa T, Yeh R, Girard A, Salvatore MM, Capaccione KM. Advances in PET/CT Imaging for Breast Cancer. J Clin Med 2023; 12:4537. [PMID: 37445572 PMCID: PMC10342839 DOI: 10.3390/jcm12134537] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 06/26/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023] Open
Abstract
One out of eight women will be affected by breast cancer during her lifetime. Imaging plays a key role in breast cancer detection and management, providing physicians with information about tumor location, heterogeneity, and dissemination. In this review, we describe the latest advances in PET/CT imaging of breast cancer, including novel applications of 18F-FDG PET/CT and the development and testing of new agents for primary and metastatic breast tumor imaging and therapy. Ultimately, these radiopharmaceuticals may guide personalized approaches to optimize treatment based on the patient's specific tumor profile, and may become a new standard of care. In addition, they may enhance the assessment of treatment efficacy and lead to improved outcomes for patients with a breast cancer diagnosis.
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Affiliation(s)
- Dorine de Jong
- Center for Cell Engineering, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA;
| | - Elise Desperito
- Department of Radiology, Columbia University Irving Medical Center, New York, NY 10032, USA; (E.D.); (L.D.); (H.M.); (A.S.); (B.B.); (C.P.); (C.L.); (T.R.); (M.M.S.)
| | | | - Laurent Dercle
- Department of Radiology, Columbia University Irving Medical Center, New York, NY 10032, USA; (E.D.); (L.D.); (H.M.); (A.S.); (B.B.); (C.P.); (C.L.); (T.R.); (M.M.S.)
| | - Romain-David Seban
- Department of Nuclear Medicine and Endocrine Oncology, Institut Curie, 92210 Saint-Cloud, France;
- Laboratory of Translational Imaging in Oncology, Paris Sciences et Lettres (PSL) Research University, Institut Curie, 91401 Orsay, France
| | - Jeeban P. Das
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; (J.P.D.); (R.Y.)
| | - Hong Ma
- Department of Radiology, Columbia University Irving Medical Center, New York, NY 10032, USA; (E.D.); (L.D.); (H.M.); (A.S.); (B.B.); (C.P.); (C.L.); (T.R.); (M.M.S.)
| | - Abin Sajan
- Department of Radiology, Columbia University Irving Medical Center, New York, NY 10032, USA; (E.D.); (L.D.); (H.M.); (A.S.); (B.B.); (C.P.); (C.L.); (T.R.); (M.M.S.)
| | - Brian Braumuller
- Department of Radiology, Columbia University Irving Medical Center, New York, NY 10032, USA; (E.D.); (L.D.); (H.M.); (A.S.); (B.B.); (C.P.); (C.L.); (T.R.); (M.M.S.)
| | - Conor Prendergast
- Department of Radiology, Columbia University Irving Medical Center, New York, NY 10032, USA; (E.D.); (L.D.); (H.M.); (A.S.); (B.B.); (C.P.); (C.L.); (T.R.); (M.M.S.)
| | - Connie Liou
- Department of Radiology, Columbia University Irving Medical Center, New York, NY 10032, USA; (E.D.); (L.D.); (H.M.); (A.S.); (B.B.); (C.P.); (C.L.); (T.R.); (M.M.S.)
| | - Aileen Deng
- Department of Hematology and Oncology, Novant Health, 170 Medical Park Road, Mooresville, NC 28117, USA;
| | - Tina Roa
- Department of Radiology, Columbia University Irving Medical Center, New York, NY 10032, USA; (E.D.); (L.D.); (H.M.); (A.S.); (B.B.); (C.P.); (C.L.); (T.R.); (M.M.S.)
| | - Randy Yeh
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; (J.P.D.); (R.Y.)
| | - Antoine Girard
- Department of Nuclear Medicine, Centre Eugène Marquis, Université Rennes 1, 35000 Rennes, France;
| | - Mary M. Salvatore
- Department of Radiology, Columbia University Irving Medical Center, New York, NY 10032, USA; (E.D.); (L.D.); (H.M.); (A.S.); (B.B.); (C.P.); (C.L.); (T.R.); (M.M.S.)
| | - Kathleen M. Capaccione
- Department of Radiology, Columbia University Irving Medical Center, New York, NY 10032, USA; (E.D.); (L.D.); (H.M.); (A.S.); (B.B.); (C.P.); (C.L.); (T.R.); (M.M.S.)
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De Pauw T, De Mey L, Debacker JM, Raes G, Van Ginderachter JA, De Groof TWM, Devoogdt N. Current status and future expectations of nanobodies in oncology trials. Expert Opin Investig Drugs 2023; 32:705-721. [PMID: 37638538 DOI: 10.1080/13543784.2023.2249814] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 08/16/2023] [Indexed: 08/29/2023]
Abstract
INTRODUCTION Monoclonal antibodies have revolutionized personalized medicine for cancer in recent decades. Despite their broad application in oncology, their large size and complexity may interfere with successful tumor targeting for certain applications of cancer diagnosis and therapy. Nanobodies have unique structural and pharmacological features compared to monoclonal antibodies and have successfully been used as complementary anti-cancer diagnostic and/or therapeutic tools. AREAS COVERED Here, an overview is given of the nanobody-based diagnostics and therapeutics that have been or are currently being tested in oncological clinical trials. Furthermore, preclinical developments, which are likely to be translated into the clinic in the near future, are highlighted. EXPERT OPINION Overall, the presented studies show the application potential of nanobodies in the field of oncology, making it likely that more nanobodies will be clinically approved in the upcoming future.
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Affiliation(s)
- Tessa De Pauw
- In vivo Cellular and Molecular Imaging Laboratory, Department of Medical Imaging, Vrije Universiteit Brussel, Brussels, Belgium
| | - Lynn De Mey
- In vivo Cellular and Molecular Imaging Laboratory, Department of Medical Imaging, Vrije Universiteit Brussel, Brussels, Belgium
- Nuclear Medicine Department, UZ Brussel, Brussels, Belgium
| | - Jens M Debacker
- In vivo Cellular and Molecular Imaging Laboratory, Department of Medical Imaging, Vrije Universiteit Brussel, Brussels, Belgium
- Nuclear Medicine Department, UZ Brussel, Brussels, Belgium
| | - Geert Raes
- Cellular and Molecular Immunology Lab, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | - Jo A Van Ginderachter
- Cellular and Molecular Immunology Lab, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Lab, VIB Center for Inflammation Research, Brussels, Belgium
| | - Timo W M De Groof
- In vivo Cellular and Molecular Imaging Laboratory, Department of Medical Imaging, Vrije Universiteit Brussel, Brussels, Belgium
| | - Nick Devoogdt
- In vivo Cellular and Molecular Imaging Laboratory, Department of Medical Imaging, Vrije Universiteit Brussel, Brussels, Belgium
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Sharma G, Braga MC, Da Pieve C, Szopa W, Starzetz T, Plate KH, Kaspera W, Kramer-Marek G. Immuno-PET Imaging of Tumour PD-L1 Expression in Glioblastoma. Cancers (Basel) 2023; 15:3131. [PMID: 37370741 DOI: 10.3390/cancers15123131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/06/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
There is no established method to assess the PD-L1 expression in brain tumours. Therefore, we investigated the suitability of affibody molecule (ZPD-L1) radiolabelled with F-18 (Al18F) and Ga-68 to measure the expression of PD-L1 in xenograft mouse models of GBM. Mice bearing subcutaneous and orthotopic tumours were imaged 1 h post-radioconjugate administration. Ex vivo biodistribution studies and immunohistochemistry (IHC) staining were performed. Tumoural PD-L1 expression and CD4+/CD8+ tumour-infiltrating lymphocytes were evaluated in human GBM specimens. ZPD-L1 was radiolabelled with radiochemical yields of 32.2 ± 4.4% (F-18) and 73.3 ± 1.8% (Ga-68). The cell-associated radioactivity in vitro was consistent with PD-L1 expression levels assessed with flow cytometry. In vivo imaging demonstrated that 18F-AlF-NOTA-ZPD-L1 can distinguish between PD-L1 high-expressing tumours (U87-MGvIII) and PD-L1-negative ones (H292PD-L1Ko). The radioconjugate was quickly cleared from the blood and normal tissues, allowing for high-contrast images of brain tumours as early as 1 h post-injection. 68Ga-NOTA-ZPD-L1 showed heterogeneous and diffuse accumulation that corresponded to the extensively infiltrating GCGR-E55 tumours involving contiguous lobes of the brain. Lastly, 39% of analysed GBM patient samples showed PD-L1+ staining of tumour cells that was associated with elevated levels of CD4+ and CD8+ lymphocytes. Our results suggest that the investigated radioconjugates are very promising agents with the potential to facilitate the future design of treatment regimens for GBM patients.
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Affiliation(s)
- Gitanjali Sharma
- Division of Radiotherapy and Imaging, Institute of Cancer Research, London SW7 3RP, UK
| | - Marta C Braga
- Division of Radiotherapy and Imaging, Institute of Cancer Research, London SW7 3RP, UK
| | - Chiara Da Pieve
- Division of Radiotherapy and Imaging, Institute of Cancer Research, London SW7 3RP, UK
| | - Wojciech Szopa
- Department of Neurosurgery, Medical University of Silesia, 41-200 Sosnowiec, Poland
| | - Tatjana Starzetz
- Edinger Institute, Institute of Neurology, 60528 Frankfurt, Germany
- German Consortium for Translational Cancer Research, DKTK, 69120 Heidelberg, Germany
| | - Karl H Plate
- Edinger Institute, Institute of Neurology, 60528 Frankfurt, Germany
- German Consortium for Translational Cancer Research, DKTK, 69120 Heidelberg, Germany
| | - Wojciech Kaspera
- Department of Neurosurgery, Medical University of Silesia, 41-200 Sosnowiec, Poland
| | - Gabriela Kramer-Marek
- Division of Radiotherapy and Imaging, Institute of Cancer Research, London SW7 3RP, UK
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Schwenck J, Sonanini D, Cotton JM, Rammensee HG, la Fougère C, Zender L, Pichler BJ. Advances in PET imaging of cancer. Nat Rev Cancer 2023:10.1038/s41568-023-00576-4. [PMID: 37258875 DOI: 10.1038/s41568-023-00576-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/17/2023] [Indexed: 06/02/2023]
Abstract
Molecular imaging has experienced enormous advancements in the areas of imaging technology, imaging probe and contrast development, and data quality, as well as machine learning-based data analysis. Positron emission tomography (PET) and its combination with computed tomography (CT) or magnetic resonance imaging (MRI) as a multimodality PET-CT or PET-MRI system offer a wealth of molecular, functional and morphological data with a single patient scan. Despite the recent technical advances and the availability of dozens of disease-specific contrast and imaging probes, only a few parameters, such as tumour size or the mean tracer uptake, are used for the evaluation of images in clinical practice. Multiparametric in vivo imaging data not only are highly quantitative but also can provide invaluable information about pathophysiology, receptor expression, metabolism, or morphological and functional features of tumours, such as pH, oxygenation or tissue density, as well as pharmacodynamic properties of drugs, to measure drug response with a contrast agent. It can further quantitatively map and spatially resolve the intertumoural and intratumoural heterogeneity, providing insights into tumour vulnerabilities for target-specific therapeutic interventions. Failure to exploit and integrate the full potential of such powerful imaging data may lead to a lost opportunity in which patients do not receive the best possible care. With the desire to implement personalized medicine in the cancer clinic, the full comprehensive diagnostic power of multiplexed imaging should be utilized.
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Affiliation(s)
- Johannes Schwenck
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen, Tübingen, Germany
- Nuclear Medicine and Clinical Molecular Imaging, Department of Radiology, Eberhard Karls University of Tübingen, Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) 'Image-Guided and Functionally Instructed Tumour Therapies', Eberhard Karls University, Tübingen, Germany
| | - Dominik Sonanini
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen, Tübingen, Germany
- Medical Oncology and Pulmonology, Department of Internal Medicine, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Jonathan M Cotton
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen, Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) 'Image-Guided and Functionally Instructed Tumour Therapies', Eberhard Karls University, Tübingen, Germany
| | - Hans-Georg Rammensee
- Cluster of Excellence iFIT (EXC 2180) 'Image-Guided and Functionally Instructed Tumour Therapies', Eberhard Karls University, Tübingen, Germany
- Department of Immunology, IFIZ Institute for Cell Biology, Eberhard Karls University of Tübingen, Tübingen, Germany
- German Cancer Research Center, German Cancer Consortium DKTK, Partner Site Tübingen, Tübingen, Germany
| | - Christian la Fougère
- Nuclear Medicine and Clinical Molecular Imaging, Department of Radiology, Eberhard Karls University of Tübingen, Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) 'Image-Guided and Functionally Instructed Tumour Therapies', Eberhard Karls University, Tübingen, Germany
- German Cancer Research Center, German Cancer Consortium DKTK, Partner Site Tübingen, Tübingen, Germany
| | - Lars Zender
- Cluster of Excellence iFIT (EXC 2180) 'Image-Guided and Functionally Instructed Tumour Therapies', Eberhard Karls University, Tübingen, Germany
- Medical Oncology and Pulmonology, Department of Internal Medicine, Eberhard Karls University of Tübingen, Tübingen, Germany
- German Cancer Research Center, German Cancer Consortium DKTK, Partner Site Tübingen, Tübingen, Germany
| | - Bernd J Pichler
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen, Tübingen, Germany.
- Cluster of Excellence iFIT (EXC 2180) 'Image-Guided and Functionally Instructed Tumour Therapies', Eberhard Karls University, Tübingen, Germany.
- German Cancer Research Center, German Cancer Consortium DKTK, Partner Site Tübingen, Tübingen, Germany.
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Altena R, Tzortzakakis A, Af Burén S, Tran TA, Frejd FY, Bergh J, Axelsson R. Current status of contemporary diagnostic radiotracers in the management of breast cancer: first steps toward theranostic applications. EJNMMI Res 2023; 13:43. [PMID: 37195374 DOI: 10.1186/s13550-023-00995-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 05/08/2023] [Indexed: 05/18/2023] Open
Abstract
BACKGROUND Expanding therapeutic possibilities have improved disease-related prospects for breast cancer patients. Pathological analysis on a tumor biopsy is the current reference standard biomarker used to select for treatment with targeted anticancer drugs. This method has, however, several limitations, related to intra- and intertumoral as well as spatial heterogeneity in receptor expression as well as the need to perform invasive procedures that are not always technically feasible. MAIN BODY In this narrative review, we focus on the current role of molecular imaging with contemporary radiotracers for positron emission tomography (PET) in breast cancer. We provide an overview of diagnostic radiotracers that represent treatment targets, such as programmed death ligand 1, human epidermal growth factor receptor 2, polyadenosine diphosphate-ribose polymerase and estrogen receptor, and discuss developments in therapeutic radionuclides for breast cancer management. CONCLUSION Imaging of treatment targets with PET tracers may provide a more reliable precision medicine tool to find the right treatment for the right patient at the right time. In addition to visualization of the target of treatment, theranostic trials with alpha- or beta-emitting isotopes provide a future treatment option for patients with metastatic breast cancer.
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Affiliation(s)
- Renske Altena
- Institutionen Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.
- Medical Unit Breast, Endocrine Tumors and Sarcoma, Theme Cancer, Karolinska Comprehensive Cancer Center, Karolinska University Hospital, Solna, Sweden.
| | - Antonios Tzortzakakis
- Division of Radiology, Department for Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
- Medical Radiation Physics and Nuclear Medicine, Functional Unit of Nuclear Medicine, Karolinska University Hospital, Huddinge, Sweden
| | - Siri Af Burén
- Division of Radiology, Department for Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
- Medical Radiation Physics and Nuclear Medicine, Functional Unit of Nuclear Medicine, Karolinska University Hospital, Huddinge, Sweden
| | - Thuy A Tran
- Medical Unit Breast, Endocrine Tumors and Sarcoma, Theme Cancer, Karolinska Comprehensive Cancer Center, Karolinska University Hospital, Solna, Sweden
- Department of Radiopharmacy, Karolinska University Hospital, Solna, Sweden
| | - Fredrik Y Frejd
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
- Affibody AB, Solna, Sweden
| | - Jonas Bergh
- Institutionen Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
- Medical Unit Breast, Endocrine Tumors and Sarcoma, Theme Cancer, Karolinska Comprehensive Cancer Center, Karolinska University Hospital, Solna, Sweden
| | - Rimma Axelsson
- Medical Radiation Physics and Nuclear Medicine, Functional Unit of Nuclear Medicine, Karolinska University Hospital, Huddinge, Sweden
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
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41
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Radaram B, Glazer SE, Yang P, Li CW, Hung MC, Gammon ST, Alauddin M, Piwnica-Worms D. Evaluation of 89Zr-Labeled Anti-PD-L1 Monoclonal Antibodies Using DFO and Novel HOPO Analogues as Chelating Agents for Immuno-PET. ACS OMEGA 2023; 8:17181-17194. [PMID: 37214681 PMCID: PMC10193402 DOI: 10.1021/acsomega.3c01547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 03/24/2023] [Indexed: 05/24/2023]
Abstract
Programmed death ligand 1 (PD-L1) is a type 1 transmembrane immunosuppressive protein that is expressed on a wide range of cell types, including cancer cells. Anti-PD-L1 antibodies have revolutionized cancer therapy and have led to improved outcomes for subsets of cancer patients, including triple-negative breast cancer (TNBC) patients. As a result, PET imaging of PD-L1 protein expression in cancer patients has been explored for noninvasive detection of PD-L1 expressing tumors as well as monitoring response to anti-PD-L1 immune checkpoint therapy. Previous studies have indicated that the in vivo stability and in vivo target detection of antibody-based radio-conjugates can be dramatically affected by the chelator used. These reports demonstrated that the chelator HOPO diminishes 89Zr de-chelation compared to DFO. Herein, we report an improved HOPO synthesis and evaluated a series of novel analogues for thermal stability, serum stability, PD-L1-specific binding using the BT-549 TNBC cell line, PET imaging in vivo, as well as biodistribution of 89Zr-labeled anti-PD-L1 antibodies in BT-549 xenograft murine models. A new chelator, C5HOPO, demonstrated high stability in vitro and afforded effective PD-L1 targeting in vivovia immuno-PET. These results demonstrated that an improved HOPO chelator is an effective chelating agent that can be utilized to image therapeutically relevant targets in vivo.
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Affiliation(s)
- Bhasker Radaram
- Department
of Cancer Systems Imaging and Department of Molecular & Cellular
Oncology, The University of Texas MD Anderson
Cancer Center, Houston, Texas 77030, United States
| | - Sarah E. Glazer
- Department
of Cancer Systems Imaging and Department of Molecular & Cellular
Oncology, The University of Texas MD Anderson
Cancer Center, Houston, Texas 77030, United States
| | - Ping Yang
- Department
of Cancer Systems Imaging and Department of Molecular & Cellular
Oncology, The University of Texas MD Anderson
Cancer Center, Houston, Texas 77030, United States
| | - Chia-Wei Li
- Department
of Cancer Systems Imaging and Department of Molecular & Cellular
Oncology, The University of Texas MD Anderson
Cancer Center, Houston, Texas 77030, United States
| | - Mien-Chie Hung
- Department
of Cancer Systems Imaging and Department of Molecular & Cellular
Oncology, The University of Texas MD Anderson
Cancer Center, Houston, Texas 77030, United States
| | - Seth T. Gammon
- Department
of Cancer Systems Imaging and Department of Molecular & Cellular
Oncology, The University of Texas MD Anderson
Cancer Center, Houston, Texas 77030, United States
| | - Mian Alauddin
- Department
of Cancer Systems Imaging and Department of Molecular & Cellular
Oncology, The University of Texas MD Anderson
Cancer Center, Houston, Texas 77030, United States
| | - David Piwnica-Worms
- Department
of Cancer Systems Imaging and Department of Molecular & Cellular
Oncology, The University of Texas MD Anderson
Cancer Center, Houston, Texas 77030, United States
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Tutino F, Giovannini E, Chiola S, Giovacchini G, Ciarmiello A. Assessment of Response to Immunotherapy in Patients with Hodgkin Lymphoma: Towards Quantifying Changes in Tumor Burden Using FDG-PET/CT. J Clin Med 2023; 12:jcm12103498. [PMID: 37240602 DOI: 10.3390/jcm12103498] [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: 03/10/2023] [Revised: 04/25/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
Immune checkpoint inhibitors are currently the standard of care for many advanced solid tumors, and they have been recently approved for the treatment of relapsed/refractory Hodgkin lymphoma and primary mediastinal B cell lymphoma. Assessments of the response to immunotherapy may be complicated by the occurrence of the flare/pseudoprogression phenomenon, consisting of initial tumor enlargement and even the appearance of new lesions, followed by a response, which may initially be indistinguishable from true progression. There have been efforts to characterize and capture the new patterns of response observed during immunotherapy, namely, pseudoprogression and delayed response, and several immune-related response criteria have been proposed. Confirming progression on a subsequent scan and measuring the total tumor burden are both common in immune-related criteria. Due to the peculiarity of hematologic malignancies, lymphoma-specific immune-related criteria have been developed (LYRIC), and they have been evaluated in research studies in comparison to the Lugano Classification. In this review work, we illustrate the evolution of the response criteria in lymphomas from the first CT-based criteria to the development of the PET-based Lugano Classification, further refined to take into account the flare phenomenon encountered during immunotherapy. We also describe the additional contribution of PET-derived volumetric parameters to the interpretation of responses during immunotherapy.
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Affiliation(s)
- Francesca Tutino
- Nuclear Medicine Unit, Ospedale Civile Sant'Andrea, Via Vittorio Veneto 170, 19124 La Spezia, Italy
| | - Elisabetta Giovannini
- Nuclear Medicine Unit, Ospedale Civile Sant'Andrea, Via Vittorio Veneto 170, 19124 La Spezia, Italy
| | - Silvia Chiola
- Nuclear Medicine Unit, IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Giampiero Giovacchini
- Nuclear Medicine Unit, Ospedale Civile Sant'Andrea, Via Vittorio Veneto 170, 19124 La Spezia, Italy
| | - Andrea Ciarmiello
- Nuclear Medicine Unit, Ospedale Civile Sant'Andrea, Via Vittorio Veneto 170, 19124 La Spezia, Italy
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Urso L, Bonatto E, Nieri A, Castello A, Maffione AM, Marzola MC, Cittanti C, Bartolomei M, Panareo S, Mansi L, Lopci E, Florimonte L, Castellani M. The Role of Molecular Imaging in Patients with Brain Metastases: A Literature Review. Cancers (Basel) 2023; 15:cancers15072184. [PMID: 37046845 PMCID: PMC10093739 DOI: 10.3390/cancers15072184] [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: 02/28/2023] [Revised: 03/28/2023] [Accepted: 04/03/2023] [Indexed: 04/14/2023] Open
Abstract
Over the last several years, molecular imaging has gained a primary role in the evaluation of patients with brain metastases (BM). Therefore, the "Response Assessment in Neuro-Oncology" (RANO) group recommends amino acid radiotracers for the assessment of BM. Our review summarizes the current use of positron emission tomography (PET) radiotracers in patients with BM, ranging from present to future perspectives with new PET radiotracers, including the role of radiomics and potential theranostics approaches. A comprehensive search of PubMed results was conducted. All studies published in English up to and including December 2022 were reviewed. Current evidence confirms the important role of amino acid PET radiotracers for the delineation of BM extension, for the assessment of response to therapy, and particularly for the differentiation between tumor progression and radionecrosis. The newer radiotracers explore non-invasively different biological tumor processes, although more consistent findings in larger clinical trials are necessary to confirm preliminary results. Our review illustrates the role of molecular imaging in patients with BM. Along with magnetic resonance imaging (MRI), the gold standard for diagnosis of BM, PET is a useful complementary technique for processes that otherwise cannot be obtained from anatomical MRI alone.
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Affiliation(s)
- Luca Urso
- Department of Nuclear Medicine PET/CT Centre, S. Maria della Misericordia Hospital, 45100 Rovigo, Italy
| | - Elena Bonatto
- Nuclear Medicine Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Alberto Nieri
- Nuclear Medicine Unit, Oncological Medical and Specialist Department, University Hospital of Ferrara, 44124 Cona, Italy
| | - Angelo Castello
- Nuclear Medicine Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Anna Margherita Maffione
- Department of Nuclear Medicine PET/CT Centre, S. Maria della Misericordia Hospital, 45100 Rovigo, Italy
| | - Maria Cristina Marzola
- Department of Nuclear Medicine PET/CT Centre, S. Maria della Misericordia Hospital, 45100 Rovigo, Italy
| | - Corrado Cittanti
- Nuclear Medicine Unit, Oncological Medical and Specialist Department, University Hospital of Ferrara, 44124 Cona, Italy
- Department of Translational Medicine, University of Ferrara, Via Aldo Moro 8, 44124 Ferrara, Italy
| | - Mirco Bartolomei
- Nuclear Medicine Unit, Oncological Medical and Specialist Department, University Hospital of Ferrara, 44124 Cona, Italy
| | - Stefano Panareo
- Nuclear Medicine Unit, Oncology and Haematology Department, University Hospital of Modena, 41125 Modena, Italy
| | - Luigi Mansi
- Interuniversity Research Center for the Sustainable Development (CIRPS), 00152 Rome, Italy
| | - Egesta Lopci
- Nuclear Medicine Unit, IRCCS-Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano, Italy
| | - Luigia Florimonte
- Nuclear Medicine Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Massimo Castellani
- Nuclear Medicine Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy
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Awad RM, Breckpot K. Novel technologies for applying immune checkpoint blockers. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2023; 382:1-101. [PMID: 38225100 DOI: 10.1016/bs.ircmb.2023.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
Cancer cells develop several ways to subdue the immune system among others via upregulation of inhibitory immune checkpoint (ICP) proteins. These ICPs paralyze immune effector cells and thereby enable unfettered tumor growth. Monoclonal antibodies (mAbs) that block ICPs can prevent immune exhaustion. Due to their outstanding effects, mAbs revolutionized the field of cancer immunotherapy. However, current ICP therapy regimens suffer from issues related to systemic administration of mAbs, including the onset of immune related adverse events, poor pharmacokinetics, limited tumor accessibility and immunogenicity. These drawbacks and new insights on spatiality prompted the exploration of novel administration routes for mAbs for instance peritumoral delivery. Moreover, novel ICP drug classes that are adept to novel delivery technologies were developed to circumvent the drawbacks of mAbs. We therefore review the state-of-the-art and novel delivery strategies of ICP drugs.
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Affiliation(s)
- Robin Maximilian Awad
- Laboratory for Molecular and Cellular Therapy, Department of Biomedical Sciences, Vrije Universiteit Brussel, Brussels, Belgium
| | - Karine Breckpot
- Laboratory for Molecular and Cellular Therapy, Department of Biomedical Sciences, Vrije Universiteit Brussel, Brussels, Belgium.
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Shankar LK, Schöder H, Sharon E, Wolchok J, Knopp MV, Wahl RL, Ellingson BM, Hall NC, Yaffe MJ, Towbin AJ, Farwell MD, Pryma D, Poussaint TY, Wright CL, Schwartz L, Harisinghani M, Mahmood U, Wu AM, Leung D, de Vries EGE, Tang Y, Beach G, Reeves SA. Harnessing imaging tools to guide immunotherapy trials: summary from the National Cancer Institute Cancer Imaging Steering Committee workshop. Lancet Oncol 2023; 24:e133-e143. [PMID: 36858729 PMCID: PMC10119769 DOI: 10.1016/s1470-2045(22)00742-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/18/2022] [Accepted: 11/30/2022] [Indexed: 03/02/2023]
Abstract
As the immuno-oncology field continues the rapid growth witnessed over the past decade, optimising patient outcomes requires an evolution in the current response-assessment guidelines for phase 2 and 3 immunotherapy clinical trials and clinical care. Additionally, investigational tools-including image analysis of standard-of-care scans (such as CT, magnetic resonance, and PET) with analytics, such as radiomics, functional magnetic resonance agents, and novel molecular-imaging PET agents-offer promising advancements for assessment of immunotherapy. To document current challenges and opportunities and identify next steps in immunotherapy diagnostic imaging, the National Cancer Institute Clinical Imaging Steering Committee convened a meeting with diverse representation among imaging experts and oncologists to generate a comprehensive review of the state of the field.
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Affiliation(s)
- Lalitha K Shankar
- Clinical Trials Branch, National Cancer Institute, Rockville, MD, USA.
| | - Heiko Schöder
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Elad Sharon
- Investigational Drug Branch, National Cancer Institute, Rockville, MD, USA
| | - Jedd Wolchok
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
| | - Michael V Knopp
- Department of Radiology, Ohio State University, Columbus, OH, USA
| | - Richard L Wahl
- Department of Radiology, Washington University, St Louis, MO, USA
| | - Benjamin M Ellingson
- Department of Radiological Sciences, University of California Los Angeles, Los Angeles, CA, USA
| | - Nathan C Hall
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
| | - Martin J Yaffe
- Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Alexander J Towbin
- Department of Radiology and Medical Imaging, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Michael D Farwell
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
| | - Daniel Pryma
- Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA
| | | | | | | | | | - Umar Mahmood
- Department of Radiology, Massachusetts General Hospital, Boston, MA, USA
| | - Anna M Wu
- Department of Immunology & Theranostics, City of Hope Comprehensive Cancer Center, Duarte, CA, USA
| | | | - Elisabeth G E de Vries
- Department of Medical Oncology, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
| | | | | | - Steven A Reeves
- Coordinating Center for Clinical Trials, National Cancer Institute, Rockville, MD, USA
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46
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Levi J, Song H. The other immuno-PET: Metabolic tracers in evaluation of immune responses to immune checkpoint inhibitor therapy for solid tumors. Front Immunol 2023; 13:1113924. [PMID: 36700226 PMCID: PMC9868703 DOI: 10.3389/fimmu.2022.1113924] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 12/19/2022] [Indexed: 01/11/2023] Open
Abstract
Unique patterns of response to immune checkpoint inhibitor therapy, discernable in the earliest clinical trials, demanded a reconsideration of the standard methods of radiological treatment assessment. Immunomonitoring, that characterizes immune responses, offers several significant advantages over the tumor-centric approach currently used in the clinical practice: 1) better understanding of the drugs' mechanism of action and treatment resistance, 2) earlier assessment of response to therapy, 3) patient/therapy selection, 4) evaluation of toxicity and 5) more accurate end-point in clinical trials. PET imaging in combination with the right agent offers non-invasive tracking of immune processes on a whole-body level and thus represents a method uniquely well-suited for immunomonitoring. Small molecule metabolic tracers, largely neglected in the immuno-PET discourse, offer a way to monitor immune responses by assessing cellular metabolism known to be intricately linked with immune cell function. In this review, we highlight the use of small molecule metabolic tracers in imaging immune responses, provide a view of their value in the clinic and discuss the importance of image analysis in the context of tracking a moving target.
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Affiliation(s)
- Jelena Levi
- CellSight Technologies Incorporated, San Francisco, CA, United States,*Correspondence: Jelena Levi,
| | - Hong Song
- Department of Radiology, Stanford University, Palo Alto, CA, United States
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