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Pinho JO, Matias M, Marques V, Eleutério C, Fernandes C, Gano L, Amaral JD, Mendes E, Perry MJ, Moreira JN, Storm G, Francisco AP, Rodrigues CMP, Gaspar MM. Preclinical validation of a new hybrid molecule loaded in liposomes for melanoma management. Biomed Pharmacother 2023; 157:114021. [PMID: 36399831 DOI: 10.1016/j.biopha.2022.114021] [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: 08/17/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 11/17/2022] Open
Abstract
The aggressiveness of melanoma and lack of effective therapies incite the discovery of novel strategies. Recently, a new dual acting hybrid molecule (HM), combining a triazene and a ʟ-tyrosine analogue, was synthesized. HM was designed to specifically be activated by tyrosinase, the enzyme involved in melanin biosynthesis and overexpressed in melanoma. HM displayed remarkable superior antiproliferative activity towards various cancer cell lines compared with temozolomide (TMZ), a triazene drug in clinical use, that acts through DNA alkylation. In B16-F10 cells, HM induced a cell cycle arrest at phase G0/G1 with a 2.8-fold decrease in cell proliferation index. Also, compared to control cells, HM led to a concentration-dependent reduction in tyrosinase activity and increase in caspase 3/7 activity. To maximize the therapeutic performance of HM in vivo, its incorporation in long blood circulating liposomes, containing poly(ethylene glycol) (PEG) at their surface, was performed for passively targeting tumour sites. HM liposomes (LIP HM) exhibited high stability in biological fluids. Preclinical studies demonstrated its safety for systemic administration and in a subcutaneous murine melanoma model, significantly reduced tumour progression. In a metastatic murine melanoma model, a superior antitumour effect was also observed for mice receiving LIP HM, with markedly reduction of lung metastases compared to positive control group (TMZ). Biodistribution studies using 111In-labelled LIP HM demonstrated its ability for passively targeting tumour sites, thus correlating with the high therapeutic effect observed in the two experimental murine melanoma models. Overall, our proposed nanotherapeutic strategy was validated as an effective and safe alternative against melanoma.
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Affiliation(s)
- Jacinta O Pinho
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Mariana Matias
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Vanda Marques
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Carla Eleutério
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Célia Fernandes
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Bobadela LRS, Portugal
| | - Lurdes Gano
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Bobadela LRS, Portugal
| | - Joana D Amaral
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Eduarda Mendes
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Maria Jesus Perry
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - João Nuno Moreira
- Center for Neurosciences and Cell Biology (CNC), Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Faculty of Medicine (Polo 1), Rua Larga, 3004-504 Coimbra, Portugal; University of Coimbra (Univ Coimbra), CIBB, Faculty of Pharmacy, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Gert Storm
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, the Netherlands; Department of Biomaterial Science and Technology, University of Twente, Enschede, the Netherlands; Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - Ana Paula Francisco
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Cecília M P Rodrigues
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - M Manuela Gaspar
- Research Institute for Medicines, iMed.ULisboa, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal.
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2
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Muthukumar S, Darden J, Crowley J, Witcher M, Kiser J. A Comparison of PET Tracers in Recurrent High-Grade Gliomas: A Systematic Review. Int J Mol Sci 2022; 24:ijms24010408. [PMID: 36613852 PMCID: PMC9820099 DOI: 10.3390/ijms24010408] [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: 11/14/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/28/2022] Open
Abstract
Humans with high-grade gliomas have a poor prognosis, with a mean survival time of just 12-18 months for patients who undergo standard-of-care tumor resection and adjuvant therapy. Currently, surgery and chemoradiotherapy serve as standard treatments for this condition, yet these can be complicated by the tumor location, growth rate and recurrence. Currently, gadolinium-based, contrast-enhanced magnetic resonance imaging (CE-MRI) serves as the predominant imaging modality for recurrent high-grade gliomas, but it faces several drawbacks, including its inability to distinguish tumor recurrence from treatment-related changes and its failure to reveal the entirety of tumor burden (de novo or recurrent) due to limitations inherent to gadolinium contrast. As such, alternative imaging modalities that can address these limitations, including positron emission tomography (PET), are worth pursuing. To this end, the identification of PET-based markers for use in imaging of recurrent high-grade gliomas is paramount. This review will highlight several PET radiotracers that have been implemented in clinical practice and provide a comparison between them to assess the efficacy of these tracers.
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Affiliation(s)
| | - Jordan Darden
- Carilion Clinic Neurosurgery, Roanoke, VA 24016, USA
| | | | - Mark Witcher
- Carilion Clinic Neurosurgery, Roanoke, VA 24016, USA
| | - Jackson Kiser
- Carilion Clinic Radiology, Roanoke, VA 24016, USA
- Correspondence:
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3
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Tatum JL, Kalen JD, Jacobs PM, Riffle LA, James A, Thang L, Sanders C, Hollingshead MG, Basuli F, Shi J, Doroshow JH. 3'-[ 18F]fluoro-3'-deoxythymidine ([ 18F]FLT) Positron Emission Tomography as an In Vivo Biomarker of inhibition of CDK 4/6-Rb pathway by Palbociclib in a patient derived bladder tumor. J Transl Med 2022; 20:375. [PMID: 35982453 PMCID: PMC9389794 DOI: 10.1186/s12967-022-03580-8] [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: 04/07/2022] [Accepted: 08/07/2022] [Indexed: 11/15/2022] Open
Abstract
Background Several new generation CDK4/6 inhibitors have been developed and approved for breast cancer therapy in combination with endocrine therapeutics. Application of these inhibitors either alone or in combination in other solid tumors has been proposed, but no imaging biomarkers of response have been reported in non-breast cancer animal models. The purpose of this study was to evaluate 3'-[18F]fluoro-3'-deoxythymidine ([18F]FLT) Positron Emission Tomography (PET) as in vivo biomarker of response to palbociclib in a non-breast cancer model. Methods Twenty-four NSG mice bearing patient derived xenografts (PDX) of a well-characterized bladder tumor were randomized into 4 treatment groups: vehicle (n = 6); palbociclib (n = 6); temozolomide (n = 6); and palbociclib plus temozolomide (n = 6) and treated with two cycles of therapy or vehicle. Tumor uptake of [18F]FLT was determined by micro-PET/CT at baseline, 3 days, and 9 days post initiation of therapy. Following the second cycle of therapy, the mice were maintained until their tumors reached a size requiring humane termination. Results [18F]FLT uptake decreased significantly in the palbociclib and combination arms (p = 0.0423 and 0.0106 respectively at day 3 and 0.0012 and 0.0031 at day 9) with stable tumor volume. In the temozolomide arm [18F]FLT uptake increased with day 9 uptake significantly different than baseline (p = 0.0418) and progressive tumor growth was observed during the treatment phase. All groups exhibited progressive disease after day 22, 10 days following cessation of therapy. Conclusion Significant decreases in [18F]FLT uptake as early as three days post initiation of therapy with palbociclib, alone or in combination with temozolomide, in this bladder cancer model correlates with an absence of tumor growth during therapy that persists until day 18 for the palbociclib group and day 22 for the combination group (6 days and 10 days) following cessation of therapy. These results support early modulation of [18F]FLT as an in vivo biomarker predictive of palbociclib therapy response in a non-breast cancer model. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-022-03580-8.
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Affiliation(s)
- James L Tatum
- Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Joseph D Kalen
- Small Animal Imaging Program, Laboratory Animal Sciences Program, Frederick National Laboratory for Cancer Research, Frederick, MD, United States
| | - Paula M Jacobs
- Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States.
| | - Lisa A Riffle
- Small Animal Imaging Program, Laboratory Animal Sciences Program, Frederick National Laboratory for Cancer Research, Frederick, MD, United States
| | - Amy James
- Animal Research Technical Support, Laboratory Animal Sciences Program, Frederick National Laboratory for Cancer Research, Frederick, MD, United States
| | - Lai Thang
- Animal Research Technical Support, Laboratory Animal Sciences Program, Frederick National Laboratory for Cancer Research, Frederick, MD, United States
| | - Chelsea Sanders
- Animal Research Technical Support, Laboratory Animal Sciences Program, Frederick National Laboratory for Cancer Research, Frederick, MD, United States
| | - Melinda G Hollingshead
- Biological Testing Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institute of Health, Frederick, MD, United States
| | - Falguni Basuli
- Chemistry and Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - Jianfeng Shi
- Chemistry and Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - James H Doroshow
- Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
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4
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Givinostat-Liposomes: Anti-Tumor Effect on 2D and 3D Glioblastoma Models and Pharmacokinetics. Cancers (Basel) 2022; 14:cancers14122978. [PMID: 35740641 PMCID: PMC9220922 DOI: 10.3390/cancers14122978] [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: 04/08/2022] [Revised: 05/10/2022] [Accepted: 06/14/2022] [Indexed: 11/16/2022] Open
Abstract
Glioblastoma is the most common and aggressive brain tumor, associated with poor prognosis and survival, representing a challenging medical issue for neurooncologists. Dysregulation of histone-modifying enzymes (HDACs) is commonly identified in many tumors and has been linked to cancer proliferation, changes in metabolism, and drug resistance. These findings led to the development of HDAC inhibitors, which are limited by their narrow therapeutic index. In this work, we provide the proof of concept for a delivery system that can improve the in vivo half-life and increase the brain delivery of Givinostat, a pan-HDAC inhibitor. Here, 150-nm-sized liposomes composed of cholesterol and sphingomyelin with or without surface decoration with mApoE peptide, inhibited human glioblastoma cell growth in 2D and 3D models by inducing a time- and dose-dependent reduction in cell viability, reduction in the receptors involved in cholesterol metabolism (from -25% to -75% of protein levels), and reduction in HDAC activity (-25% within 30 min). In addition, liposome-Givinostat formulations showed a 2.5-fold increase in the drug half-life in the bloodstream and a 6-fold increase in the amount of drug entering the brain in healthy mice, without any signs of overt toxicity. These features make liposomes loaded with Givinostat valuable as potential candidates for glioblastoma therapy.
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Barca C, Griessinger CM, Faust A, Depke D, Essler M, Windhorst AD, Devoogdt N, Brindle KM, Schäfers M, Zinnhardt B, Jacobs AH. Expanding Theranostic Radiopharmaceuticals for Tumor Diagnosis and Therapy. Pharmaceuticals (Basel) 2021; 15:13. [PMID: 35056071 PMCID: PMC8780589 DOI: 10.3390/ph15010013] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/16/2021] [Accepted: 12/16/2021] [Indexed: 02/06/2023] Open
Abstract
Radioligand theranostics (RT) in oncology use cancer-type specific biomarkers and molecular imaging (MI), including positron emission tomography (PET), single-photon emission computed tomography (SPECT) and planar scintigraphy, for patient diagnosis, therapy, and personalized management. While the definition of theranostics was initially restricted to a single compound allowing visualization and therapy simultaneously, the concept has been widened with the development of theranostic pairs and the combination of nuclear medicine with different types of cancer therapies. Here, we review the clinical applications of different theranostic radiopharmaceuticals in managing different tumor types (differentiated thyroid, neuroendocrine prostate, and breast cancer) that support the combination of innovative oncological therapies such as gene and cell-based therapies with RT.
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Affiliation(s)
- Cristina Barca
- European Institute for Molecular Imaging, University of Münster, D-48149 Münster, Germany; (A.F.); (D.D.); (M.S.); (B.Z.)
| | - Christoph M. Griessinger
- Roche Innovation Center, Early Clinical Development Oncology, Roche Pharmaceutical Research and Early Development, CH-4070 Basel, Switzerland;
| | - Andreas Faust
- European Institute for Molecular Imaging, University of Münster, D-48149 Münster, Germany; (A.F.); (D.D.); (M.S.); (B.Z.)
- Department of Nuclear Medicine, University Hospital Münster, D-48149 Münster, Germany
| | - Dominic Depke
- European Institute for Molecular Imaging, University of Münster, D-48149 Münster, Germany; (A.F.); (D.D.); (M.S.); (B.Z.)
| | - Markus Essler
- Department of Nuclear Medicine, University Hospital Bonn, D-53127 Bonn, Germany;
| | - Albert D. Windhorst
- Department Radiology & Nuclear Medicine, Amsterdam UMC, Vrije Universiteit, De Boelelaan 1117, 1081HV Amsterdam, The Netherlands;
| | - Nick Devoogdt
- In Vivo Cellular and Molecular Imaging Laboratory, Vrije Universiteit Brussel, B-1090 Brussel, Belgium;
| | - Kevin M. Brindle
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge CB2 ORE, UK;
| | - Michael Schäfers
- European Institute for Molecular Imaging, University of Münster, D-48149 Münster, Germany; (A.F.); (D.D.); (M.S.); (B.Z.)
- Department of Nuclear Medicine, University Hospital Münster, D-48149 Münster, Germany
| | - Bastian Zinnhardt
- European Institute for Molecular Imaging, University of Münster, D-48149 Münster, Germany; (A.F.); (D.D.); (M.S.); (B.Z.)
- Department of Nuclear Medicine, University Hospital Münster, D-48149 Münster, Germany
- Biomarkers and Translational Technologies, Pharma Research and Early Development, F. Hoffmann-La Roche Ltd., CH-4070 Basel, Switzerland
| | - Andreas H. Jacobs
- European Institute for Molecular Imaging, University of Münster, D-48149 Münster, Germany; (A.F.); (D.D.); (M.S.); (B.Z.)
- Department of Geriatrics and Neurology, Johanniter Hospital, D-53113 Bonn, Germany
- Centre of Integrated Oncology, University Hospital Bonn, D-53127 Bonn, Germany
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6
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Valtorta S, Lo Dico A, Raccagni I, Martelli C, Pieri V, Rainone P, Todde S, Zinnhardt B, De Bernardi E, Coliva A, Politi LS, Viel T, Jacobs AH, Galli R, Ottobrini L, Vaira V, Moresco RM. Imaging Metformin Efficacy as Add-On Therapy in Cells and Mouse Models of Human EGFR Glioblastoma. Front Oncol 2021; 11:664149. [PMID: 34012924 PMCID: PMC8126706 DOI: 10.3389/fonc.2021.664149] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 04/12/2021] [Indexed: 12/14/2022] Open
Abstract
Glioblastoma (GBM) is a highly aggressive tumor of the brain. Despite the efforts, response to current therapies is poor and 2-years survival rate ranging from 6-12%. Here, we evaluated the preclinical efficacy of Metformin (MET) as add-on therapy to Temozolomide (TMZ) and the ability of [18F]FLT (activity of thymidine kinase 1 related to cell proliferation) and [18F]VC701 (translocator protein, TSPO) Positron Emission Tomography (PET) radiotracers to predict tumor response to therapy. Indeed, TSPO is expressed on the outer mitochondrial membrane of activated microglia/macrophages, tumor cells, astrocytes and endothelial cells. TMZ-sensitive (Gli36ΔEGFR-1 and L0627) or -resistant (Gli36ΔEGFR-2) GBM cell lines representative of classical molecular subtype were tested in vitro and in vivo in orthotopic mouse models. Our results indicate that in vitro, MET increased the efficacy of TMZ on TMZ-sensitive and on TMZ-resistant cells by deregulating the balance between pro-survival (bcl2) and pro-apoptotic (bax/bad) Bcl-family members and promoting early apoptosis in both Gli36ΔEGFR-1 and Gli36ΔEGFR-2 cells. In vivo, MET add-on significantly extended the median survival of tumor-bearing mice compared to TMZ-treated ones and reduced the rate of recurrence in the TMZ-sensitive models. PET studies with the cell proliferation radiopharmaceutical [18F]FLT performed at early time during treatment were able to distinguish responder from non-responder to TMZ but not to predict the duration of the effect. On the contrary, [18F]VC701 uptake was reduced only in mice treated with MET plus TMZ and levels of uptake negatively correlated with animals’ survival. Overall, our data showed that MET addition improved TMZ efficacy in GBM preclinical models representative of classical molecular subtype increasing survival time and reducing tumor relapsing rate. Finally, results from PET imaging suggest that the reduction of cell proliferation represents a common mechanism of TMZ and combined treatment, whereas only the last was able to reduce TSPO. This reduction was associated with the duration of treatment response. TSPO-ligand may be used as a complementary molecular imaging marker to predict tumor microenvironment related treatment effects.
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Affiliation(s)
- Silvia Valtorta
- Department of Medicine and Surgery and Tecnomed Foundation, University of Milano - Bicocca, Monza, Italy.,Institute of Molecular Bioimaging and Physiology, National Research Council (IBFM-CNR), Segrate, Italy.,Nuclear Medicine Department, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Alessia Lo Dico
- Department of Pathophysiology and Transplantation (DEPT), University of Milan, Milan, Italy
| | - Isabella Raccagni
- Institute of Molecular Bioimaging and Physiology, National Research Council (IBFM-CNR), Segrate, Italy.,Nuclear Medicine Department, IRCCS San Raffaele Scientific Institute, Milan, Italy.,SYSBIO Centre of Systems Biology ISBE.ITALY, University of Milano - Bicocca, Milan, Italy
| | - Cristina Martelli
- Department of Pathophysiology and Transplantation (DEPT), University of Milan, Milan, Italy
| | - Valentina Pieri
- Neural Stem Cell Biology Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Paolo Rainone
- Department of Medicine and Surgery and Tecnomed Foundation, University of Milano - Bicocca, Monza, Italy.,Nuclear Medicine Department, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Sergio Todde
- Department of Medicine and Surgery and Tecnomed Foundation, University of Milano - Bicocca, Monza, Italy.,Institute of Molecular Bioimaging and Physiology, National Research Council (IBFM-CNR), Segrate, Italy
| | - Bastian Zinnhardt
- European Institute for Molecular Imaging (EIMI), University of Münster, Münster, Germany.,Department of Nuclear Medicine, University Hospital Münster, Münster, Germany
| | - Elisabetta De Bernardi
- Department of Medicine and Surgery and Tecnomed Foundation, University of Milano - Bicocca, Monza, Italy
| | - Angela Coliva
- Nuclear Medicine Department, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Letterio S Politi
- Department of Biomedical Sciences, Humanitas University, Rozzano, Italy.,Department of Neuroradiology, Humanitas Clinical and Research Center IRCCS, Rozzano, Italy
| | - Thomas Viel
- PARCC, INSERM, Université de Paris, Paris, France
| | - Andreas H Jacobs
- European Institute for Molecular Imaging (EIMI), University of Münster, Münster, Germany
| | - Rossella Galli
- Neural Stem Cell Biology Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Luisa Ottobrini
- Institute of Molecular Bioimaging and Physiology, National Research Council (IBFM-CNR), Segrate, Italy.,Department of Pathophysiology and Transplantation (DEPT), University of Milan, Milan, Italy
| | - Valentina Vaira
- Department of Pathophysiology and Transplantation (DEPT), University of Milan, Milan, Italy.,Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Rosa Maria Moresco
- Department of Medicine and Surgery and Tecnomed Foundation, University of Milano - Bicocca, Monza, Italy.,Institute of Molecular Bioimaging and Physiology, National Research Council (IBFM-CNR), Segrate, Italy.,Nuclear Medicine Department, IRCCS San Raffaele Scientific Institute, Milan, Italy
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Jacobs AH, Schelhaas S, Viel T, Waerzeggers Y, Winkeler A, Zinnhardt B, Gelovani J. Imaging of Gene and Cell-Based Therapies: Basis and Clinical Trials. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00060-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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8
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Solnes LB, Jacobs AH, Coughlin JM, Du Y, Goel R, Hammoud DA, Pomper MG. Central Nervous System Molecular Imaging. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00088-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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9
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Valtorta S, Salvatore D, Rainone P, Belloli S, Bertoli G, Moresco RM. Molecular and Cellular Complexity of Glioma. Focus on Tumour Microenvironment and the Use of Molecular and Imaging Biomarkers to Overcome Treatment Resistance. Int J Mol Sci 2020; 21:E5631. [PMID: 32781585 PMCID: PMC7460665 DOI: 10.3390/ijms21165631] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 07/31/2020] [Accepted: 08/03/2020] [Indexed: 02/08/2023] Open
Abstract
This review highlights the importance and the complexity of tumour biology and microenvironment in the progression and therapy resistance of glioma. Specific gene mutations, the possible functions of several non-coding microRNAs and the intra-tumour and inter-tumour heterogeneity of cell types contribute to limit the efficacy of the actual therapeutic options. In this scenario, identification of molecular biomarkers of response and the use of multimodal in vivo imaging and in particular the Positron Emission Tomography (PET) based molecular approach, can help identifying glioma features and the modifications occurring during therapy at a regional level. Indeed, a better understanding of tumor heterogeneity and the development of diagnostic procedures can favor the identification of a cluster of patients for personalized medicine in order to improve the survival and their quality of life.
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Affiliation(s)
- Silvia Valtorta
- Department of Medicine and Surgery and Tecnomed Foundation, University of Milano—Bicocca, 20900 Monza, Italy; (S.V.); (D.S.); (P.R.)
- Nuclear Medicine Department, San Raffaele Scientific Institute (IRCCS), 20132 Milan, Italy;
| | - Daniela Salvatore
- Department of Medicine and Surgery and Tecnomed Foundation, University of Milano—Bicocca, 20900 Monza, Italy; (S.V.); (D.S.); (P.R.)
- Nuclear Medicine Department, San Raffaele Scientific Institute (IRCCS), 20132 Milan, Italy;
| | - Paolo Rainone
- Department of Medicine and Surgery and Tecnomed Foundation, University of Milano—Bicocca, 20900 Monza, Italy; (S.V.); (D.S.); (P.R.)
- Nuclear Medicine Department, San Raffaele Scientific Institute (IRCCS), 20132 Milan, Italy;
| | - Sara Belloli
- Nuclear Medicine Department, San Raffaele Scientific Institute (IRCCS), 20132 Milan, Italy;
- Institute of Molecular Bioimaging and Physiology (IBFM), CNR, 20090 Segrate, Italy
| | - Gloria Bertoli
- Institute of Molecular Bioimaging and Physiology (IBFM), CNR, 20090 Segrate, Italy
| | - Rosa Maria Moresco
- Department of Medicine and Surgery and Tecnomed Foundation, University of Milano—Bicocca, 20900 Monza, Italy; (S.V.); (D.S.); (P.R.)
- Nuclear Medicine Department, San Raffaele Scientific Institute (IRCCS), 20132 Milan, Italy;
- Institute of Molecular Bioimaging and Physiology (IBFM), CNR, 20090 Segrate, Italy
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10
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Evrard YA, Srivastava A, Randjelovic J, Doroshow JH, Dean DA, Morris JS, Chuang JH. Systematic Establishment of Robustness and Standards in Patient-Derived Xenograft Experiments and Analysis. Cancer Res 2020; 80:2286-2297. [PMID: 32152150 PMCID: PMC7272270 DOI: 10.1158/0008-5472.can-19-3101] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 01/16/2020] [Accepted: 03/04/2020] [Indexed: 12/30/2022]
Abstract
Patient-derived xenografts (PDX) are tumor-in-mouse models for cancer. PDX collections, such as the NCI PDXNet, are powerful resources for preclinical therapeutic testing. However, variations in experimental and analysis procedures have limited interpretability. To determine the robustness of PDX studies, the PDXNet tested temozolomide drug response for three prevalidated PDX models (sensitive, resistant, and intermediate) across four blinded PDX Development and Trial Centers using independently selected standard operating procedures. Each PDTC was able to correctly identify the sensitive, resistant, and intermediate models, and statistical evaluations were concordant across all groups. We also developed and benchmarked optimized PDX informatics pipelines, and these yielded robust assessments across xenograft biological replicates. These studies show that PDX drug responses and sequence results are reproducible across diverse experimental protocols. In addition, we share the range of experimental procedures that maintained robustness, as well as standardized cloud-based workflows for PDX exome-sequencing and RNA-sequencing analyses and for evaluating growth. SIGNIFICANCE: The PDXNet Consortium shows that PDX drug responses and sequencing results are reproducible across diverse experimental protocols, establishing the potential for multisite preclinical studies to translate into clinical trials.
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Affiliation(s)
- Yvonne A Evrard
- Leidos Biomedical Research, Inc, Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - Anuj Srivastava
- The Jackson Laboratory for Genomic Medicine, Farmington, Connecticut
| | | | - James H Doroshow
- Division of Cancer Treatment and Diagnosis, NCI, NIH, Bethesda, Maryland
| | | | - Jeffrey S Morris
- The University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Jeffrey H Chuang
- The Jackson Laboratory for Genomic Medicine, Farmington, Connecticut.
- University of Connecticut Health Center, Farmington, Connecticut
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Kumari S, Bhattacharya D, Rangaraj N, Chakarvarty S, Kondapi AK, Rao NM. Aurora kinase B siRNA-loaded lactoferrin nanoparticles potentiate the efficacy of temozolomide in treating glioblastoma. Nanomedicine (Lond) 2018; 13:2579-2596. [DOI: 10.2217/nnm-2018-0110] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Aim: To investigate the efficacy of lactoferrin nanoparticles (LfNPs) in delivering siRNA across the blood–brain barrier to treat glioblastoma multiforme (GBM) and with an additional objective of potentiation of conventional temozolomide (TMZ) chemotherapy. Methods: Aurora kinase B (AKB) siRNA-loaded nanoparticles (AKB–LfNPs) were prepared with milk protein, lactoferrin, by water in oil emulsion method. AKB–LfNPs were tested in cell lines and in GBM orthotopic mouse model with and without TMZ treatment. Results: AKB silencing, cytotoxicity and cell cycle arrest by these LfNPs were shown to be effective on GL261 cells. Tumor growth was significantly lower in AKB–LfNPs alone and in combination with TMZ treated mice and increased the survival by 2.5-times. Conclusion: Treatment of AKB–LfNPs to GBM mice improves life expectancy and has potential to combine with conventional chemotherapy.
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Affiliation(s)
- Sonali Kumari
- Department of Biotechnology & Bioinformatics, School of Life Sciences, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad 500 046, Telangana State, India
| | - Dwaipayan Bhattacharya
- Centre for Chemical Biology, Indian Institute of Chemical Technology (IICT), Council of Scientific & Industrial Research, Uppal Road, Hyderabad 500 007, Telangana State, India
| | - Nandini Rangaraj
- Centre for Cellular & Molecular Biology (CCMB), Council of Scientific & Industrial Research (CSIR), Uppal Road, Hyderabad 500007, Telangana State, India
| | - Sumana Chakarvarty
- Centre for Cellular & Molecular Biology (CCMB), Council of Scientific & Industrial Research (CSIR), Uppal Road, Hyderabad 500007, Telangana State, India
| | - Anand K Kondapi
- Department of Biotechnology & Bioinformatics, School of Life Sciences, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad 500 046, Telangana State, India
| | - Nalam M Rao
- Centre for Chemical Biology, Indian Institute of Chemical Technology (IICT), Council of Scientific & Industrial Research, Uppal Road, Hyderabad 500 007, Telangana State, India
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12
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Schelhaas S, Wachsmuth L, Hermann S, Rieder N, Heller A, Heinzmann K, Honess DJ, Smith DM, Fricke IB, Just N, Doblas S, Sinkus R, Döring C, Schäfers KP, Griffiths JR, Faber C, Schneider R, Aboagye EO, Jacobs AH. Thymidine Metabolism as a Confounding Factor for 3'-Deoxy-3'- 18F-Fluorothymidine Uptake After Therapy in a Colorectal Cancer Model. J Nucl Med 2018; 59:1063-1069. [PMID: 29476002 DOI: 10.2967/jnumed.117.206250] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 01/22/2018] [Indexed: 12/12/2022] Open
Abstract
Noninvasive monitoring of tumor therapy response helps in developing personalized treatment strategies. Here, we performed sequential PET and diffusion-weighted MRI to evaluate changes induced by a FOLFOX-like combination chemotherapy in colorectal cancer xenografts, to identify the cellular and molecular determinants of these imaging biomarkers. Methods: Tumor-bearing CD1 nude mice, engrafted with FOLFOX-sensitive Colo205 colorectal cancer xenografts, were treated with FOLFOX (5-fluorouracil, leucovorin, and oxaliplatin) weekly. On days 1, 2, 6, 9, and 13 of therapy, tumors were assessed by in vivo imaging and ex vivo analyses. In addition, HCT116 xenografts, which did not respond to the FOLFOX treatment, were imaged on day 1 of therapy. Results: In Colo205 xenografts, FOLFOX induced a profound increase in uptake of the proliferation PET tracer 3'-deoxy-3'-18F-fluorothymidine (18F-FLT) accompanied by increases in markers for proliferation (Ki-67, thymidine kinase 1) and for activated DNA damage response (γH2AX), whereas the effect on cell death was minimal. Because tracer uptake was unaltered in the HCT116 model, these changes appear to be specific for tumor response. Conclusion: We demonstrated that 18F-FLT PET can noninvasively monitor cancer treatment-induced molecular alterations, including thymidine metabolism and DNA damage response. The cellular or imaging changes may not, however, be directly related to therapy response as assessed by volumetric measurements.
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Affiliation(s)
- Sonja Schelhaas
- European Institute for Molecular Imaging, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Lydia Wachsmuth
- Department of Clinical Radiology, University Hospital of Münster, Münster, Germany
| | - Sven Hermann
- European Institute for Molecular Imaging, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Natascha Rieder
- Pathology and Tissue Analytics, Roche Pharma Research and Early Development, Roche Innovation Center, Munich, Germany
| | - Astrid Heller
- Pathology and Tissue Analytics, Roche Pharma Research and Early Development, Roche Innovation Center, Munich, Germany
| | - Kathrin Heinzmann
- Comprehensive Cancer Imaging Centre, Imperial College London, London, United Kingdom
| | - Davina J Honess
- Cancer Research U.K. Cambridge Institute, Cambridge, United Kingdom
| | | | - Inga B Fricke
- European Institute for Molecular Imaging, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Nathalie Just
- Department of Clinical Radiology, University Hospital of Münster, Münster, Germany
| | - Sabrina Doblas
- Laboratory of Imaging Biomarkers, UMR 1149-CRI, INSERM, Paris Diderot University, Paris, France
| | - Ralph Sinkus
- Imaging Sciences and Biomedical Engineering Division, Kings College, London, United Kingdom
| | - Christian Döring
- European Institute for Molecular Imaging, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Klaus P Schäfers
- European Institute for Molecular Imaging, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - John R Griffiths
- Cancer Research U.K. Cambridge Institute, Cambridge, United Kingdom
| | - Cornelius Faber
- Department of Clinical Radiology, University Hospital of Münster, Münster, Germany
| | | | - Eric O Aboagye
- Comprehensive Cancer Imaging Centre, Imperial College London, London, United Kingdom
| | - Andreas H Jacobs
- European Institute for Molecular Imaging, Westfälische Wilhelms-Universität Münster, Münster, Germany
- Department of Geriatric Medicine, Johanniter Hospital, Bonn, Germany
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13
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Vaglini F, Pardini C, Di Desidero T, Orlandi P, Pasqualetti F, Ottani A, Pacini S, Giuliani D, Guarini S, Bocci G. Melanocortin Receptor-4 and Glioblastoma Cells: Effects of the Selective Antagonist ML00253764 Alone and in Combination with Temozolomide In Vitro and In Vivo. Mol Neurobiol 2017; 55:4984-4997. [DOI: 10.1007/s12035-017-0702-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 07/31/2017] [Indexed: 12/13/2022]
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14
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Alexiou GA, Xourgia X, Gerogianni P, Vartholomatos E, Kalef-Ezra JA, Fotopoulos AD, Kyritsis AP. 99mTc-Tetrofosmin Uptake Correlates with the Sensitivity of Glioblastoma Cell Lines to Temozolomide. World J Nucl Med 2017; 16:45-50. [PMID: 28217019 PMCID: PMC5314663 DOI: 10.4103/1450-1147.181155] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
99mTc-tetrofosmin (99mTc-TF) is a single-photon emission computed tomography tracer that has been used for brain tumor imaging. The aim of the study was to assess if 99mTc-TF uptake by glioblastoma cells correlates with their response to temozolomide (TMZ). We investigated the correlation of TMZ antitumor effect with the 99mTc-TF uptake in two glioblastoma cell lines. The U251MG cell line is sensitive to TMZ, whereas T98G is resistant. Viability and proliferation of the cells were examined by trypan blue exclusion assay and xCELLigence system. Cell cycle was analyzed with flow cytometry. The radioactivity in the cellular lysate was measured with a gamma scintillation counter. TMZ induced G2/M cell cycle arrest in U251MG cells, whereas there was no effect on cell cycle in T98G cells. Lower 99mTc-TF uptake was observed in U251MG cells that were exposed to TMZ compared to control (P = 0.0159). No significant difference in respect to 99mTc-TF uptake was found in T98G cells when exposed to TMZ compared to control (P = 0.8). With 99mTc-TF, it was possible to distinguish between TMZ-sensitive and resistant glioblastoma cells within 6 h of treatment initiation. Thus, 99mTc-TF uptake may consist a novel approach to assess an early response of glioblastoma to chemotherapy and deserves further investigation.
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Affiliation(s)
- George A Alexiou
- Neurosurgical Institute, University of Ioannina, Ioannina, Greece
| | - Xanthi Xourgia
- Department of Nuclear Medicine, University Hospital of Ioannina, Ioannina, Greece
| | | | | | - John A Kalef-Ezra
- Department of Medical Physics, University of Ioannina, Ioannina, Greece
| | - Andreas D Fotopoulos
- Department of Nuclear Medicine, University Hospital of Ioannina, Ioannina, Greece
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15
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Zinnhardt B, Pigeon H, Thézé B, Viel T, Wachsmuth L, Fricke IB, Schelhaas S, Honold L, Schwegmann K, Wagner S, Faust A, Faber C, Kuhlmann MT, Hermann S, Schäfers M, Winkeler A, Jacobs AH. Combined PET Imaging of the Inflammatory Tumor Microenvironment Identifies Margins of Unique Radiotracer Uptake. Cancer Res 2017; 77:1831-1841. [PMID: 28137769 DOI: 10.1158/0008-5472.can-16-2628] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 01/12/2017] [Accepted: 01/12/2017] [Indexed: 11/16/2022]
Abstract
The tumor microenvironment is highly heterogeneous. For gliomas, the tumor-associated inflammatory response is pivotal to support growth and invasion. Factors of glioma growth, inflammation, and invasion, such as the translocator protein (TSPO) and matrix metalloproteinases (MMP), may serve as specific imaging biomarkers of the glioma microenvironment. In this study, noninvasive imaging by PET with [18F]DPA-714 (TSPO) and [18F]BR-351 (MMP) was used for the assessment of localization and quantification of the expression of TSPO and MMP. Imaging was performed in addition to established clinical imaging biomarker of active tumor volume ([18F]FET) in conjunction with MRI. We hypothesized that each imaging biomarker revealed distinct areas of the heterogeneous glioma tissue in a mouse model of human glioma. Tracers were found to be increased 1.4- to 1.7-fold, with [18F]FET showing the biggest volume as depicted by a thresholding-based, volumes of interest analysis. Tumor areas, which could not be detected by a single tracer and/or MRI parameter alone, were measured. Specific compartments of [18F]DPA-714 (14%) and [18F]BR-351 (11%) volumes along the tumor rim could be identified. [18F]DPA-714 (TSPO) and [18F]BR-351 (MMP) matched with histology. Glioma-associated microglia/macrophages (GAM) were identified as TSPO and MMP sources. Multitracer and multimodal molecular imaging approaches may allow us to gain important insights into glioma-associated inflammation (GAM, MMP). Moreover, this noninvasive technique enables characterization of the glioma microenvironment with respect to the disease-driving cellular compartments at the various disease stages. Cancer Res; 77(8); 1831-41. ©2017 AACR.
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Affiliation(s)
- Bastian Zinnhardt
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-University Münster, Münster, Germany.
| | - Hayet Pigeon
- Imagerie Moléculaire In Vivo, Inserm, CEA, Univ. Paris Sud, CNRS, Université Paris Saclay, CEA - Service Hospitalier Frédéric Joliot, Orsay, France
| | - Benoit Thézé
- Imagerie Moléculaire In Vivo, Inserm, CEA, Univ. Paris Sud, CNRS, Université Paris Saclay, CEA - Service Hospitalier Frédéric Joliot, Orsay, France
| | - Thomas Viel
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-University Münster, Münster, Germany.,PARCC INSERM-U970, Université Paris Descartes, Paris, France
| | - Lydia Wachsmuth
- Department of Clinical Radiology, University Hospital Münster, Münster, Germany
| | - Inga B Fricke
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-University Münster, Münster, Germany
| | - Sonja Schelhaas
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-University Münster, Münster, Germany
| | - Lisa Honold
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-University Münster, Münster, Germany
| | - Katrin Schwegmann
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-University Münster, Münster, Germany
| | - Stefan Wagner
- Department of Nuclear Medicine, University Hospital Münster, Münster, Germany
| | - Andreas Faust
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-University Münster, Münster, Germany
| | - Cornelius Faber
- Department of Clinical Radiology, University Hospital Münster, Münster, Germany.,DFG EXC 1003 Cluster of Excellence 'Cells in Motion', University of Münster, Münster, Germany
| | - Michael T Kuhlmann
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-University Münster, Münster, Germany
| | - Sven Hermann
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-University Münster, Münster, Germany.,DFG EXC 1003 Cluster of Excellence 'Cells in Motion', University of Münster, Münster, Germany
| | - Michael Schäfers
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-University Münster, Münster, Germany.,Department of Nuclear Medicine, University Hospital Münster, Münster, Germany.,DFG EXC 1003 Cluster of Excellence 'Cells in Motion', University of Münster, Münster, Germany
| | - Alexandra Winkeler
- Imagerie Moléculaire In Vivo, Inserm, CEA, Univ. Paris Sud, CNRS, Université Paris Saclay, CEA - Service Hospitalier Frédéric Joliot, Orsay, France
| | - Andreas H Jacobs
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-University Münster, Münster, Germany.,DFG EXC 1003 Cluster of Excellence 'Cells in Motion', University of Münster, Münster, Germany.,Department of Geriatrics, Johanniter Hospital, Evangelische Kliniken, Bonn, Germany
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16
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Schelhaas S, Heinzmann K, Bollineni VR, Kramer GM, Liu Y, Waterton JC, Aboagye EO, Shields AF, Soloviev D, Jacobs AH. Preclinical Applications of 3'-Deoxy-3'-[ 18F]Fluorothymidine in Oncology - A Systematic Review. Theranostics 2017; 7:40-50. [PMID: 28042315 PMCID: PMC5196884 DOI: 10.7150/thno.16676] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 09/16/2016] [Indexed: 11/05/2022] Open
Abstract
The positron emission tomography (PET) tracer 3'-deoxy-3'-[18F]fluorothymidine ([18F]FLT) has been proposed to measure cell proliferation non-invasively in vivo. Hence, it should provide valuable information for response assessment to tumor therapies. To date, [18F]FLT uptake has found limited use as a response biomarker in clinical trials in part because a better understanding is needed of the determinants of [18F]FLT uptake and therapy-induced changes of its retention in the tumor. In this systematic review of preclinical [18F]FLT studies, comprising 174 reports, we identify the factors governing [18F]FLT uptake in tumors, among which thymidine kinase 1 plays a primary role. The majority of publications (83 %) report that decreased [18F]FLT uptake reflects the effects of anticancer therapies. 144 times [18F]FLT uptake was related to changes in proliferation as determined by ex vivo analyses. Of these approaches, 77 % describe a positive relation, implying a good concordance of tracer accumulation and tumor biology. These preclinical data indicate that [18F]FLT uptake holds promise as an imaging biomarker for response assessment in clinical studies. Understanding of the parameters which influence cellular [18F]FLT uptake and retention as well as the mechanism of changes induced by therapy is essential for successful implementation of this PET tracer. Hence, our systematic review provides the background for the use of [18F]FLT in future clinical studies.
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Affiliation(s)
- Sonja Schelhaas
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany
| | | | - Vikram R Bollineni
- European Organization for Research and Treatment of Cancer Headquarters, Brussels, Belgium
| | - Gerbrand M Kramer
- Department of Radiology and Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands
| | - Yan Liu
- European Organization for Research and Treatment of Cancer Headquarters, Brussels, Belgium
| | | | - Eric O Aboagye
- Comprehensive Cancer Imaging Centre, Imperial College London, UK
| | - Anthony F Shields
- Department of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, Michigan, USA
| | - Dmitry Soloviev
- Cancer Research UK Cambridge Institute, University of Cambridge, UK
| | - Andreas H Jacobs
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany.; Department of Geriatric Medicine, Johanniter Hospital, Bonn, Germany
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17
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Schelhaas S, Held A, Wachsmuth L, Hermann S, Honess DJ, Heinzmann K, Smith DM, Griffiths JR, Faber C, Jacobs AH. Gemcitabine Mechanism of Action Confounds Early Assessment of Treatment Response by 3'-Deoxy-3'-[18F]Fluorothymidine in Preclinical Models of Lung Cancer. Cancer Res 2016; 76:7096-7105. [PMID: 27784748 DOI: 10.1158/0008-5472.can-16-1479] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 10/13/2016] [Accepted: 10/17/2016] [Indexed: 11/16/2022]
Abstract
3'-Deoxy-3'-[18F]fluorothymidine positron emission tomography ([18F]FLT-PET) and diffusion-weighted MRI (DW-MRI) are promising approaches to monitor tumor therapy response. Here, we employed these two imaging modalities to evaluate the response of lung carcinoma xenografts in mice after gemcitabine therapy. Caliper measurements revealed that H1975 xenografts responded to gemcitabine treatment, whereas A549 growth was not affected. In both tumor models, uptake of [18F]FLT was significantly reduced 6 hours after drug administration. On the basis of the gemcitabine concentration and [18F]FLT excretion measured, this was presumably related to a direct competition of gemcitabine with the radiotracer for cellular uptake. On day 1 after therapy, [18F]FLT uptake was increased in both models, which was correlated with thymidine kinase 1 (TK1) expression. Two and 3 days after drug administration, [18F]FLT uptake as well as TK1 and Ki67 expression were unchanged. A reduction in [18F]FLT in the responsive H1975 xenografts could only be noted on day 5 of therapy. Changes in ADCmean in A549 xenografts 1 or 2 days after gemcitabine did not seem to be of therapy-related biological relevance as they were not related to cell death (assessed by caspase-3 IHC and cellular density) or tumor therapy response. Taken together, in these models, early changes of [18F]FLT uptake in tumors reflected mechanisms, such as competing gemcitabine uptake or gemcitabine-induced thymidylate synthase inhibition, and only reflected growth-inhibitory effects at a later time point. Hence, the time point for [18F]FLT-PET imaging of tumor response to gemcitabine is of crucial importance. Cancer Res; 76(24); 7096-105. ©2016 AACR.
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Affiliation(s)
- Sonja Schelhaas
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany
| | - Annelena Held
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany
| | - Lydia Wachsmuth
- Department of Clinical Radiology, University Hospital of Münster, Münster, Germany
| | - Sven Hermann
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany
| | - Davina J Honess
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | - Kathrin Heinzmann
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | - Donna-Michelle Smith
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | - John R Griffiths
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | - Cornelius Faber
- Department of Clinical Radiology, University Hospital of Münster, Münster, Germany
| | - Andreas H Jacobs
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany.
- Department of Geriatric Medicine, Johanniter Hospital, Bonn, Germany
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18
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Schelhaas S, Held A, Bäumer N, Viel T, Hermann S, Müller-Tidow C, Jacobs AH. Preclinical Evidence That 3′-Deoxy-3′-[18F]Fluorothymidine PET Can Visualize Recovery of Hematopoiesis after Gemcitabine Chemotherapy. Cancer Res 2016; 76:7089-7095. [DOI: 10.1158/0008-5472.can-16-1478] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 09/19/2016] [Accepted: 10/06/2016] [Indexed: 11/16/2022]
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19
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Corroyer-Dulmont A, Pérès EA, Gérault AN, Savina A, Bouquet F, Divoux D, Toutain J, Ibazizène M, MacKenzie ET, Barré L, Bernaudin M, Petit E, Valable S. Multimodal imaging based on MRI and PET reveals [(18)F]FLT PET as a specific and early indicator of treatment efficacy in a preclinical model of recurrent glioblastoma. Eur J Nucl Med Mol Imaging 2015; 43:682-94. [PMID: 26537287 DOI: 10.1007/s00259-015-3225-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 10/08/2015] [Indexed: 11/29/2022]
Abstract
PURPOSE The primary objective of this study was to compare the ability of PET and MRI biomarkers to predict treatment efficacy in a preclinical model of recurrent glioblastoma multiforme. METHODS MRI (anatomical, diffusion, vasculature and oxygenation) and PET ([(18)F]FDG and [(18)F]FLT) parameters were obtained 3 days after the end of treatment and compared with late tumour growth and survival. RESULTS Early after tumour recurrence, no effect of treatment with temozolomide combined with bevacizumab was observed on tumour volume as assessed by T2-W MRI. At later times, the treatment decreased tumour volume and increased survival. Interestingly, at the earlier time, temozolomide + bevacizumab decreased [(18)F]FLT uptake, cerebral blood volume and oedema. [(18)F]FLT uptake, oedema and cerebral blood volume were correlated with overall survival but [(18)F]FLT uptake had the highest specificity and sensitivity for the early prediction of treatment efficacy. CONCLUSION The present investigation in a preclinical model of glioblastoma recurrence underscores the importance of multimodal imaging in the assessment of oedema, tumour vascular status and cell proliferation. Finally, [(18)F]FLT holds the greatest promise for the early assessment of treatment efficacy. These findings may translate clinically in that individualized treatment for recurrent glioma could be prescribed for patients selected after PET/MRI examinations.
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Affiliation(s)
- Aurélien Corroyer-Dulmont
- CNRS, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd H Becquerel, BP 5229, 14074, Caen Cedex, France.,CEA, DSV/I2BM, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,UNICAEN, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,Normandie Univ, Esplanade de la Paix, 14032, Caen Cedex, France
| | - Elodie A Pérès
- CNRS, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd H Becquerel, BP 5229, 14074, Caen Cedex, France.,CEA, DSV/I2BM, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,UNICAEN, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,Normandie Univ, Esplanade de la Paix, 14032, Caen Cedex, France
| | - Aurélie N Gérault
- CNRS, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd H Becquerel, BP 5229, 14074, Caen Cedex, France.,CEA, DSV/I2BM, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,UNICAEN, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,Normandie Univ, Esplanade de la Paix, 14032, Caen Cedex, France
| | - Ariel Savina
- Roche SAS, 30, cours de l'Ile Seguin, 92650, Boulogne-Billancourt, France
| | - Fanny Bouquet
- Roche SAS, 30, cours de l'Ile Seguin, 92650, Boulogne-Billancourt, France
| | - Didier Divoux
- CNRS, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd H Becquerel, BP 5229, 14074, Caen Cedex, France.,CEA, DSV/I2BM, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,UNICAEN, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,Normandie Univ, Esplanade de la Paix, 14032, Caen Cedex, France
| | - Jérôme Toutain
- CNRS, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd H Becquerel, BP 5229, 14074, Caen Cedex, France.,CEA, DSV/I2BM, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,UNICAEN, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,Normandie Univ, Esplanade de la Paix, 14032, Caen Cedex, France
| | - Méziane Ibazizène
- CNRS, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd H Becquerel, BP 5229, 14074, Caen Cedex, France.,CEA, DSV/I2BM, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,UNICAEN, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,Normandie Univ, Esplanade de la Paix, 14032, Caen Cedex, France
| | - Eric T MacKenzie
- CNRS, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd H Becquerel, BP 5229, 14074, Caen Cedex, France.,CEA, DSV/I2BM, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,UNICAEN, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,Normandie Univ, Esplanade de la Paix, 14032, Caen Cedex, France
| | - Louisa Barré
- CNRS, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd H Becquerel, BP 5229, 14074, Caen Cedex, France.,CEA, DSV/I2BM, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,UNICAEN, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,Normandie Univ, Esplanade de la Paix, 14032, Caen Cedex, France
| | - Myriam Bernaudin
- CNRS, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd H Becquerel, BP 5229, 14074, Caen Cedex, France.,CEA, DSV/I2BM, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,UNICAEN, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,Normandie Univ, Esplanade de la Paix, 14032, Caen Cedex, France
| | - Edwige Petit
- CNRS, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd H Becquerel, BP 5229, 14074, Caen Cedex, France.,CEA, DSV/I2BM, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,UNICAEN, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France.,Normandie Univ, Esplanade de la Paix, 14032, Caen Cedex, France
| | - Samuel Valable
- CNRS, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd H Becquerel, BP 5229, 14074, Caen Cedex, France. .,CEA, DSV/I2BM, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France. .,UNICAEN, UMR 6301 ISTCT, CERVOxy and LDM-TEP groups. GIP CYCERON, Bd Henri Becquerel, BP 5229, 14074, Caen Cedex, France. .,Normandie Univ, Esplanade de la Paix, 14032, Caen Cedex, France.
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20
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Jensen MM, Kjaer A. Monitoring of anti-cancer treatment with (18)F-FDG and (18)F-FLT PET: a comprehensive review of pre-clinical studies. AMERICAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING 2015; 5:431-456. [PMID: 26550536 PMCID: PMC4620172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 09/10/2015] [Indexed: 06/05/2023]
Abstract
Functional imaging of solid tumors with positron emission tomography (PET) imaging is an evolving field with continuous development of new PET tracers and discovery of new applications for already implemented PET tracers. During treatment of cancer patients, a general challenge is to measure treatment effect early in a treatment course and by that to stratify patients into responders and non-responders. With 2-deoxy-2-[(18)F]fluoro-D-glucose ((18)F-FDG) and 3'-deoxy-3'-[(18)F]fluorothymidine((18)F-FLT) two of the cancer hallmarks, altered energy metabolism and increased cell proliferation, can be visualized and quantified non-invasively by PET. With (18)F-FDG and (18)F-FLT PET changes in energy metabolism and cell proliferation can thereby be determined after initiation of cancer treatment in both clinical and pre-clinical studies in order to predict, at an early time-point, treatment response. It is hypothesized that decreases in glycolysis and cell proliferation may occur in tumors that are sensitive to the applied cancer therapeutics and that tumors that are resistant to treatment will show unchanged glucose metabolism and cell proliferation. Whether (18)F-FDG and/or (18)F-FLT PET can be used for prediction of treatment response has been analyzed in many studies both following treatment with conventional chemotherapeutic agents but also following treatment with different targeted therapies, e.g. monoclonal antibodies and small molecules inhibitors. The results from these studies have been most variable; in some studies early changes in (18)F-FDG and (18)F-FLT uptake predicted later tumor regression whereas in other studies no change in tracer uptake was observed despite the treatment being effective. The present review gives an overview of pre-clinical studies that have used (18)F-FDG and/or (18)F-FLT PET for response monitoring of cancer therapeutics.
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Affiliation(s)
- Mette Munk Jensen
- Department of Clinical Physiology, Nuclear Medicine & PET and Cluster for Molecular Imaging, Rigshospitalet and University of Copenhagen Denmark
| | - Andreas Kjaer
- Department of Clinical Physiology, Nuclear Medicine & PET and Cluster for Molecular Imaging, Rigshospitalet and University of Copenhagen Denmark
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21
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Bulk E, Ay AS, Hammadi M, Ouadid-Ahidouch H, Schelhaas S, Hascher A, Rohde C, Thoennissen NH, Wiewrodt R, Schmidt E, Marra A, Hillejan L, Jacobs AH, Klein HU, Dugas M, Berdel WE, Müller-Tidow C, Schwab A. Epigenetic dysregulation of KCa 3.1 channels induces poor prognosis in lung cancer. Int J Cancer 2015; 137:1306-17. [PMID: 25704182 DOI: 10.1002/ijc.29490] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 01/21/2015] [Accepted: 01/26/2015] [Indexed: 01/31/2023]
Abstract
Epigenomic changes are an important feature of malignant tumors. How tumor aggressiveness is affected by DNA methylation of specific loci is largely unexplored. In genome-wide DNA methylation analyses, we identified the KCa 3.1 channel gene (KCNN4) promoter to be hypomethylated in an aggressive non-small-cell lung carcinoma (NSCLC) cell line and in patient samples. Accordingly, KCa 3.1 expression was increased in more aggressive NSCLC cells. Both findings were strong predictors for poor prognosis in lung adenocarcinoma. Increased KCa 3.1 expression was associated with aggressive features of NSCLC cells. Proliferation and migration of pro-metastatic NSCLC cells depended on KCa 3.1 activity. Mechanistically, elevated KCa 3.1 expression hyperpolarized the membrane potential, thereby augmenting the driving force for Ca(2+) influx. KCa 3.1 blockade strongly reduced the growth of xenografted NSCLC cells in mice as measured by positron emission tomography-computed tomography. Thus, loss of DNA methylation of the KCNN4 promoter and increased KCa 3.1 channel expression and function are mechanistically linked to poor survival of NSCLC patients.
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Affiliation(s)
- Etmar Bulk
- Institute of Physiology II, University of Münster, Münster, Germany
| | - Anne-Sophie Ay
- Laboratory of Cellular Physiology, EA 4667, SFR CAP-SANTE (FED4231), UFR Sciences, University of Picardie Jules Verne, Amiens, 80039, France
| | - Mehdi Hammadi
- Laboratory of Cellular Physiology, EA 4667, SFR CAP-SANTE (FED4231), UFR Sciences, University of Picardie Jules Verne, Amiens, 80039, France.,Inserm U916, Institut Bergonié, Bordeaux, 33076, France
| | - Halima Ouadid-Ahidouch
- Laboratory of Cellular Physiology, EA 4667, SFR CAP-SANTE (FED4231), UFR Sciences, University of Picardie Jules Verne, Amiens, 80039, France
| | - Sonja Schelhaas
- European Institute for Molecular Imaging (EIMI), University of Münster, Münster, Germany
| | - Antje Hascher
- Department of Medicine, Hematology, Oncology and Pneumology, University of Münster, Münster, Germany
| | - Christian Rohde
- Department of Medicine, Hematology, Oncology and Pneumology, University of Münster, Münster, Germany.,Department of Medicine, Hematology and Oncology, University Hospital of Halle (Saale), Halle (Saale), Germany
| | - Nils H Thoennissen
- Department of Medicine, Hematology, Oncology and Pneumology, University of Münster, Münster, Germany.,Department of Internal Medicine II and Clinic (Oncology Center), University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Rainer Wiewrodt
- Department of Medicine, Hematology, Oncology and Pneumology, University of Münster, Münster, Germany
| | - Eva Schmidt
- Department of Medicine, Hematology, Oncology and Pneumology, University of Münster, Münster, Germany
| | - Alessandro Marra
- Department of Thoracic Surgery, Niels-Stensen Clinics, Ostercappeln, Germany
| | - Ludger Hillejan
- Department of Thoracic Surgery, Niels-Stensen Clinics, Ostercappeln, Germany
| | - Andreas H Jacobs
- European Institute for Molecular Imaging (EIMI), University of Münster, Münster, Germany.,Department of Geriatric Medicine, Johanniter Hospital, Bonn, Germany
| | - Hans-Ulrich Klein
- Institute of Medical Informatics, University of Münster, Münster, Germany
| | - Martin Dugas
- Institute of Medical Informatics, University of Münster, Münster, Germany
| | - Wolfgang E Berdel
- Department of Medicine, Hematology, Oncology and Pneumology, University of Münster, Münster, Germany
| | - Carsten Müller-Tidow
- Department of Medicine, Hematology, Oncology and Pneumology, University of Münster, Münster, Germany.,Department of Medicine, Hematology and Oncology, University Hospital of Halle (Saale), Halle (Saale), Germany
| | - Albrecht Schwab
- Institute of Physiology II, University of Münster, Münster, Germany
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22
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Zhao F, Cui Y, Li M, Fu Z, Chen Z, Kong L, Yang G, Yu J. Prognostic value of 3′-Deoxy-3′-18F-Fluorothymidine ([18F] FLT PET) in patients with recurrent malignant gliomas. Nucl Med Biol 2014; 41:710-5. [DOI: 10.1016/j.nucmedbio.2014.04.134] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 04/25/2014] [Accepted: 04/30/2014] [Indexed: 10/25/2022]
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23
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Sales KJ, Adefuye A, Nicholson L, Katz AA. CCR5 expression is elevated in cervical cancer cells and is up-regulated by seminal plasma. Mol Hum Reprod 2014; 20:1144-57. [PMID: 25103627 DOI: 10.1093/molehr/gau063] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The interplay between inflammation, cervical cancer and HIV acquisition in women is poorly understood. We have previously shown that seminal plasma (SP) can promote cervical tumour cell growth in vitro and in vivo via the activation of potent inflammatory pathways. In this study, we investigated whether SP could regulate expression of chemokine receptors with known roles in HIV infection, in the cervix and in cervical cancer. The expression of CD4 and CCR5 was investigated by RT-PCR analysis and immunohistochemistry. CD4 and CCR5 expression was elevated in cervical cancer tissue compared with normal cervix. Ex vivo studies conducted on cervical tissues and HeLa cells showed that SP significantly increases the expression of CD4 and CCR5 transcripts. Furthermore, it was found that SP also up-regulates CCR5 protein in HeLa cells. The regulation of CCR5 expression was investigated following treatment of HeLa cells with SP in the presence/absence of chemical inhibitors of intracellular signalling, EP2 and EP4 antagonists, prostaglandin (PG) E2 and a cyclooxygenase (COX)-1 doxycycline-inducible expression system. These experiments demonstrated that the regulation of CCR5 expression by SP occurs via the epidermal growth factor receptor (EGFR)-COX-1-PGE2 pathway. This study provides a link between activation of inflammatory pathways and regulation of HIV receptor expression in cervical cancer cells.
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Affiliation(s)
- Kurt J Sales
- MRC/UCT Receptor Biology Research Unit, Institute of Infectious Disease and Molecular Medicine and Division of Medical Biochemistry, Faculty of Health Sciences, University of Cape Town, Observatory 7925, South Africa
| | - Anthonio Adefuye
- MRC/UCT Receptor Biology Research Unit, Institute of Infectious Disease and Molecular Medicine and Division of Medical Biochemistry, Faculty of Health Sciences, University of Cape Town, Observatory 7925, South Africa
| | - Lauren Nicholson
- MRC/UCT Receptor Biology Research Unit, Institute of Infectious Disease and Molecular Medicine and Division of Medical Biochemistry, Faculty of Health Sciences, University of Cape Town, Observatory 7925, South Africa
| | - Arieh A Katz
- MRC/UCT Receptor Biology Research Unit, Institute of Infectious Disease and Molecular Medicine and Division of Medical Biochemistry, Faculty of Health Sciences, University of Cape Town, Observatory 7925, South Africa
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24
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Schelhaas S, Wachsmuth L, Viel T, Honess DJ, Heinzmann K, Smith DM, Hermann S, Wagner S, Kuhlmann MT, Müller-Tidow C, Kopka K, Schober O, Schäfers M, Schneider R, Aboagye EO, Griffiths J, Faber C, Jacobs AH. Variability of Proliferation and Diffusion in Different Lung Cancer Models as Measured by 3'-Deoxy-3'-¹⁸F-Fluorothymidine PET and Diffusion-Weighted MR Imaging. J Nucl Med 2014; 55:983-8. [PMID: 24777288 DOI: 10.2967/jnumed.113.133348] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Accepted: 02/15/2014] [Indexed: 01/22/2023] Open
Abstract
UNLABELLED Molecular imaging allows the noninvasive assessment of cancer progression and response to therapy. The aim of this study was to investigate molecular and cellular determinants of 3'-deoxy-3'-(18)F-fluorothymidine ((18)F-FLT) PET and diffusion-weighted (DW) MR imaging in lung carcinoma xenografts. METHODS Four lung cancer cell lines (A549, HTB56, EBC1, and H1975) were subcutaneously implanted in nude mice, and growth was followed by caliper measurements. Glucose uptake and tumor proliferation were determined by (18)F-FDG and (18)F-FLT PET, respectively. T2-weighted MR imaging was performed, and the apparent diffusion coefficient (ADC) was determined by DW MR imaging as an indicator of cell death. Imaging findings were correlated to histology with markers for tumor proliferation (Ki67, 5-bromo-2'-deoxyuridine [BrdU]) and cell death (caspase-3, terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling). The expression of human equilibrative nucleoside transporter 1 (hENT1), thymidine kinase 1 (TK1), thymidylate synthase, and thymidine phosphorylase (TP) were analyzed by Western blot and immunohistochemistry. Thymidine levels were determined by liquid chromatography-mass spectrometry. RESULTS Xenografts varied with respect to in vivo growth rates. MR imaging and PET revealed intratumoral heterogeneities, which were confirmed by histology. (18)F-FLT uptake differed significantly between tumor lines, with A549 and H1975 demonstrating the highest radiotracer accumulation (A549, 8.5 ± 3.2; HTB56, 4.4 ± 0.7; EBC1, 4.4 ± 1.2; and H1975, 12.1 ± 3.5 maximal percentage injected dose per milliliter). In contrast, differences in (18)F-FDG uptake were only marginal. No clear relationship between (18)F-FLT accumulation and immunohistochemical markers for tumor proliferation (Ki67, BrdU) as well as hENT1, TK1, or TS expression was detected. However, TP was highly expressed in A549 and H1975 xenografts, which was accompanied by low tumor thymidine concentrations, suggesting that tumor thymidine levels influence (18)F-FLT uptake in the tumor models investigated. MR imaging revealed higher ADC values within proliferative regions of H1975 and A549 tumors than in HTB56 and EBC1. These ADC values were negatively correlated with cell density but not directly related to cell death. CONCLUSION A direct relationship of (18)F-FLT with proliferation or ADC with cell death might be complicated by the interplay of multiple processes at the cellular and physiologic levels in untreated tumors. This issue must be considered when using these imaging modalities in preclinical or clinical settings.
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Affiliation(s)
- Sonja Schelhaas
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany
| | - Lydia Wachsmuth
- Department of Clinical Radiology, University Hospital of Münster, Münster, Germany
| | - Thomas Viel
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany
| | - Davina J Honess
- Cancer Research United Kingdom Cambridge Institute, Cambridge, United Kingdom
| | - Kathrin Heinzmann
- Cancer Research United Kingdom Cambridge Institute, Cambridge, United Kingdom
| | | | - Sven Hermann
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany
| | - Stefan Wagner
- Department of Nuclear Medicine, University Hospital of Münster, Münster, Germany
| | - Michael T Kuhlmann
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany
| | - Carsten Müller-Tidow
- Department of Hematology and Oncology, University Hospital of Münster, Münster, Germany
| | - Klaus Kopka
- Department of Nuclear Medicine, University Hospital of Münster, Münster, Germany
| | - Otmar Schober
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany Department of Nuclear Medicine, University Hospital of Münster, Münster, Germany
| | - Michael Schäfers
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany Department of Nuclear Medicine, University Hospital of Münster, Münster, Germany
| | | | - Eric O Aboagye
- Comprehensive Cancer Imaging Centre, Imperial College London, London, United Kingdom; and
| | - John Griffiths
- Cancer Research United Kingdom Cambridge Institute, Cambridge, United Kingdom
| | - Cornelius Faber
- Department of Clinical Radiology, University Hospital of Münster, Münster, Germany
| | - Andreas H Jacobs
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Münster, Germany Department of Geriatric Medicine, Johanniter Hospital, Bonn, Germany
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