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Paranawithana NN, Chiaffarelli R, Kretschmer J, Buchanan E, Lopez K, Zhao P, Kiefer G, Jurek P, Martins AF, Sherry AD. Enhancing r1 Relaxivity in GdDOTA-Monoamide Complexes through Polar Group-Mediated Ordering of Second-Sphere Water Molecules. Inorg Chem 2024; 63:4072-4077. [PMID: 38385753 DOI: 10.1021/acs.inorgchem.3c03639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
This study was designed to test whether the single appended phosphonate group in GdDOTA-1AmP is sufficient for catalyzing the exchange of proton from the single inner-sphere water-exchanging molecule. Unlike the other phosphonate derivatives in this series, GdDOTA-1AmP showed a surprisingly smooth increase in r1 relaxivity from 3.0 to 6.3 mM-1 s-1 at 20 MHz as the pH was lowered from 9 to 2.5. In comparison to the bis-, tris-, and tetrakis-phosphonate analogues, which all show a biphasic dependence of r1 with changes in pH, the unique r1 versus pH characteristics of GdDOTA-1AmP are shown to closely parallel deprotonation of the single appended phosphonate group. Although the tissue biodistribution and clearance rates of GdDOTA-1AmP are more favorable than the other more highly charged phosphonate derivatives, the pH dependency of r1 is substantially reduced at magnetic fields typically used for small animal imaging (7 and 9.4T), so the attractiveness of this new molecule for quantitative imaging of tissue pH is diminished. However, this study provides some new insights into the feasibility of designing pH-responsive MRI contrast agents based upon fundamental acid-base prototropic mechanisms.
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Affiliation(s)
- Namini N Paranawithana
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Remy Chiaffarelli
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen, Tübingen 72076, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies″, University of Tübingen, Tübingen 72076, Germany
- German Cancer Consortium (DKTK), partner site Tübingen, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, Heidelberg 69120, Germany
| | - Jan Kretschmer
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen, Tübingen 72076, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies″, University of Tübingen, Tübingen 72076, Germany
- German Cancer Consortium (DKTK), partner site Tübingen, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, Heidelberg 69120, Germany
| | - Emily Buchanan
- Macrocyclics, Inc., An Orano Med Company, 700 Klein Road, Plano, Texas 75074, United States
| | - Katherine Lopez
- Macrocyclics, Inc., An Orano Med Company, 700 Klein Road, Plano, Texas 75074, United States
| | - Piyu Zhao
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Garry Kiefer
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
- Macrocyclics, Inc., An Orano Med Company, 700 Klein Road, Plano, Texas 75074, United States
| | - Paul Jurek
- Macrocyclics, Inc., An Orano Med Company, 700 Klein Road, Plano, Texas 75074, United States
| | - André F Martins
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
- Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls University of Tübingen, Tübingen 72076, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies″, University of Tübingen, Tübingen 72076, Germany
- German Cancer Consortium (DKTK), partner site Tübingen, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, Heidelberg 69120, Germany
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, United States
| | - A Dean Sherry
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
- Advanced Imaging Research Center, The University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, United States
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Murtaj V, Penati S, Belloli S, Foti M, Coliva A, Papagna A, Gotti C, Toninelli E, Chiaffarelli R, Mantero S, Pucci S, Matteoli M, Malosio ML, Moresco RM. Brain sex-dependent alterations after prolonged high fat diet exposure in mice. Commun Biol 2022; 5:1276. [PMID: 36414721 PMCID: PMC9681749 DOI: 10.1038/s42003-022-04214-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 11/02/2022] [Indexed: 11/23/2022] Open
Abstract
We examined effects of exposing female and male mice for 33 weeks to 45% or 60% high fat diet (HFD). Males fed with either diet were more vulnerable than females, displaying higher and faster increase in body weight and more elevated cholesterol and liver enzymes levels. Higher glucose metabolism was revealed by PET in the olfactory bulbs of both sexes. However, males also displayed altered anterior cortex and cerebellum metabolism, accompanied by a more prominent brain inflammation relative to females. Although both sexes displayed reduced transcripts of neuronal and synaptic genes in anterior cortex, only males had decreased protein levels of AMPA and NMDA receptors. Oppositely, to anterior cortex, cerebellum of HFD-exposed mice displayed hypometabolism and transcriptional up-regulation of neuronal and synaptic genes. These results indicate that male brain is more susceptible to metabolic changes induced by HFD and that the anterior cortex versus cerebellum display inverse susceptibility to HFD.
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Affiliation(s)
- Valentina Murtaj
- grid.7563.70000 0001 2174 1754PhD Program in Neuroscience, University of Milano-Bicocca, Monza (MB), Italy ,grid.18887.3e0000000417581884Department of Nuclear Medicine, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy ,grid.18887.3e0000000417581884Present Address: Neuroimmunology Unit, Institute of Experimental Neurology, IRCCS San Raffaele Hospital and Vita Salute San Raffaele University, Milan, Italy, 20132 Milan, Italy
| | - Silvia Penati
- Institute of Neuroscience, National Research Council of Italy (CNR) c/o Humanitas Mirasole S.p.A, Via Manzoni 56, 20089 Rozzano (MI), Italy ,grid.417728.f0000 0004 1756 8807Laboratory of Pharmacology and Brain Pathology, Neuro Center, IRCCS Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy ,grid.4367.60000 0001 2355 7002Present Address: Department of Pathology and Immunology, Washington Univerisity School of Medicine, St. Louis, MO 63110 USA
| | - Sara Belloli
- grid.18887.3e0000000417581884Department of Nuclear Medicine, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy ,grid.428490.30000 0004 1789 9809Institute of Molecular Bioimaging and Physiology, CNR, 20090 Segrate (MI), Italy
| | - Maria Foti
- grid.7563.70000 0001 2174 1754Department of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza (MB), Italy
| | - Angela Coliva
- grid.18887.3e0000000417581884Department of Nuclear Medicine, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Angela Papagna
- grid.7563.70000 0001 2174 1754Department of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza (MB), Italy
| | - Cecilia Gotti
- grid.5326.20000 0001 1940 4177Institute of Neuroscience, National Research Council of Italy (CNR) c/o Università di Milano-Bicocca, Via R. Follereau 3, 20854 Vedano al Lambro (MB), Italy
| | - Elisa Toninelli
- grid.18887.3e0000000417581884Department of Nuclear Medicine, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Remy Chiaffarelli
- grid.18887.3e0000000417581884Department of Nuclear Medicine, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy ,grid.7563.70000 0001 2174 1754Department of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza (MB), Italy ,grid.10392.390000 0001 2190 1447Present Address: Werner Siemens Imaging Center, Department of Preclinical Imaging and Radiopharmacy, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - Stefano Mantero
- grid.5326.20000 0001 1940 4177Institute for Genetic and Biomedical Research, National Research Council of Italy (CNR) c/o Humanitas Mirasole S.p.A, Via Manzoni 56, 20089 Rozzano (MI), Italy ,grid.5326.20000 0001 1940 4177Present Address: DCSR, National Research Council of Italy (CNR), Via A. Corti 12, 20133 Milan, Italy
| | - Susanna Pucci
- grid.5326.20000 0001 1940 4177Institute of Neuroscience, National Research Council of Italy (CNR) c/o Università di Milano-Bicocca, Via R. Follereau 3, 20854 Vedano al Lambro (MB), Italy
| | - Michela Matteoli
- Institute of Neuroscience, National Research Council of Italy (CNR) c/o Humanitas Mirasole S.p.A, Via Manzoni 56, 20089 Rozzano (MI), Italy ,grid.417728.f0000 0004 1756 8807Laboratory of Pharmacology and Brain Pathology, Neuro Center, IRCCS Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
| | - Maria Luisa Malosio
- Institute of Neuroscience, National Research Council of Italy (CNR) c/o Humanitas Mirasole S.p.A, Via Manzoni 56, 20089 Rozzano (MI), Italy ,grid.417728.f0000 0004 1756 8807Laboratory of Pharmacology and Brain Pathology, Neuro Center, IRCCS Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
| | - Rosa Maria Moresco
- grid.18887.3e0000000417581884Department of Nuclear Medicine, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy ,grid.428490.30000 0004 1789 9809Institute of Molecular Bioimaging and Physiology, CNR, 20090 Segrate (MI), Italy ,grid.7563.70000 0001 2174 1754Department of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza (MB), Italy
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