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Adumeau P, Raavé R, Boswinkel M, Heskamp S, Wessels HJCT, van Gool AJ, Moreau M, Bernhard C, Da Costa L, Goncalves V, Denat F. Site-Specific, Platform-Based Conjugation Strategy for the Synthesis of Dual-Labeled Immunoconjugates for Bimodal PET/NIRF Imaging of HER2-Positive Tumors. Bioconjug Chem 2022; 33:530-540. [PMID: 35230093 DOI: 10.1021/acs.bioconjchem.2c00049] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Because positron emission tomography (PET) and optical imaging are very complementary, the combination of these two imaging modalities is very enticing in the oncology field. Such bimodal imaging generally relies on imaging agents bearing two different imaging reporters. In the bioconjugation field, this is mainly performed by successive random conjugations of the two reporters on the protein vector, but these random conjugations can alter the vector properties. In this study, we aimed at abrogating the heterogeneity of the bimodal imaging immunoconjugate and mitigating the impact of multiple random conjugations. A trivalent platform bearing a DFO chelator for 89Zr labeling, a NIR fluorophore, IRDye800CW, and a bioconjugation handle was synthesized. This bimodal probe was site-specifically grafted to trastuzumab via glycan engineering. This new bimodal immunoconjugate was then investigated in terms of radiochemistry, in vitro and in vivo, and compared to the clinically relevant random equivalent. In vitro and in vivo, our strategy provides several improvements over the current clinical standard. The combination of site-specific conjugation with the monomolecular platform reduced the heterogeneity of the final immunoconjugate, improved the resistance of the fluorophore toward radiobleaching, and reduced the nonspecific uptake in the spleen and liver compared to the standard random immunoconjugate. To conclude, the strategy developed is very promising for the synthesis of better defined dual-labeled immunoconjugates, although there is still room for improvement. Importantly, this conjugation strategy is highly modular and could be used for the synthesis of a wide range of dual-labeled immunoconjugates.
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Affiliation(s)
- Pierre Adumeau
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302, CNRS, Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, 21000 Dijon, France
| | - René Raavé
- Department of Medical Imaging, Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Geert Grooteplein Zuid 28, 6525 GA Nijmegen, The Netherlands
| | - Milou Boswinkel
- Department of Medical Imaging, Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Geert Grooteplein Zuid 28, 6525 GA Nijmegen, The Netherlands
| | - Sandra Heskamp
- Department of Medical Imaging, Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Geert Grooteplein Zuid 28, 6525 GA Nijmegen, The Netherlands
| | - Hans J C T Wessels
- Translational Metabolic Laboratory, Department of Laboratory Medicine, Radboud University Medical Centre, Geert Grooteplein Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Alain J van Gool
- Translational Metabolic Laboratory, Department of Laboratory Medicine, Radboud University Medical Centre, Geert Grooteplein Zuid 10, 6525 GA Nijmegen, The Netherlands
| | - Mathieu Moreau
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302, CNRS, Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, 21000 Dijon, France
| | - Claire Bernhard
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302, CNRS, Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, 21000 Dijon, France
| | - Laurène Da Costa
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302, CNRS, Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, 21000 Dijon, France
| | - Victor Goncalves
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302, CNRS, Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, 21000 Dijon, France
| | - Franck Denat
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302, CNRS, Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, 21000 Dijon, France
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2
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Guillou A, Nisli E, Klingler S, Linden A, Holland JP. Photoactivatable Fluorescent Tags for Dual-Modality Positron Emission Tomography Optical Imaging. J Med Chem 2022; 65:811-823. [PMID: 34981931 DOI: 10.1021/acs.jmedchem.1c01899] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Fluorescent protein conjugates are vital tools in a wide range of scientific disciplines from basic biochemical research to applications in clinical pathology and intraoperative surgery. We report the synthesis and characterization of photoactivatable fluorophores (PhotoTags) based on the functionalization of coumarin, fluorescein, BODIPY, rhodamine B, and cyanine dyes with a photochemically active aryl azide group. Photochemical labeling experiments using human serum albumin produced fluorescent proteins in high yields under irradiation with ultraviolet light for <15 min. We also synthesized DFO-RhodB-PEG3-ArN3─a photoactivatable compound that can be radiolabeled with 89Zr for applications in optical imaging and positron emission tomography. One-pot 89Zr-radiolabeling and light-induced protein conjugation produced [89Zr]ZrDFO-RhodB-PEG3-azepin-trastuzumab. Proof-of-concept studies in vitro and in vivo confirmed that [89Zr]ZrDFO-RhodB-PEG3-azepin-trastuzumab is a potential dual-modality agent for detecting human epidermal growth factor receptor 2 (HER2/neu) expression. Overall, the PhotoTag technology represents a rapid, synthetically versatile, and user-friendly approach for generating novel protein conjugates.
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Affiliation(s)
- Amaury Guillou
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Eda Nisli
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Simon Klingler
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Anthony Linden
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Jason P Holland
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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3
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Radiopharmaceuticals developed for 89Zr-Immuno-PET. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07922-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Synthesis, Characterization and In Vitro Evaluation of Hybrid Monomeric Peptides Suited for Multimodal Imaging by PET/OI: Extending the Concept of Charge-Cell Binding Correlation. Pharmaceuticals (Basel) 2021; 14:ph14100989. [PMID: 34681213 PMCID: PMC8541144 DOI: 10.3390/ph14100989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 12/15/2022] Open
Abstract
In the context of hybrid multimodal imaging agents for gastrin releasing peptide receptor (GRPR) targeting, a correlation between the net charge and the receptor affinity of the agents was recently found. In particular, a decrease in in vitro GRPR binding affinity was observed in case of an increasing number of negative charges for dually labeled GRPR-specific peptide dimers suited for positron emission tomography and optical imaging (PET/OI). This adverse influence of anionic charges could be in part compensated by a higher valency of peptide multimerization. However, it remains unknown whether this adverse effect of anionic charges is limited to peptide multimers or if it is also found or even more pronounced when GRPR-specific peptide monomers are dually labeled with fluorescent dye and chelating agent/radionuclide. Moreover, it would be important to know if this effect is limited to GRPR-specific agents only or if these observations also apply to other dually labeled peptides binding to other receptor types. To address these questions, we synthesized hybrid labels, comprising a chelator, different fluorescent dyes carrying different net charges and a functional group for bioconjugation and introduced them into different peptides, specifically targeting the GRPR, the melanocortin-1 receptor (MC1R) and integrin αvβ3. The synthesized conjugates were evaluated with regard to their chemical, radiochemical, photophysical and receptor affinity properties. It was found that neither the 68Ga-radiolabeling nor the fluorescence characteristics of the dyes were altered by the conjugation of the MIUs to the peptides. Further, it was confirmed that the net number of anionic charges has a negative effect on the GRPR-binding affinity of the GRPR-targeting MIU-peptide monomer conjugates and that this same effect was also found to the same extent for the other receptor systems studied.
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5
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Rajasekar M. Recent Trends in Rhodamine derivatives as fluorescent probes for biomaterial applications. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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6
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Hübner R, Paretzki A, von Kiedrowski V, Maspero M, Cheng X, Davarci G, Braun D, Damerow H, Judmann B, Filippou V, Dallanoce C, Schirrmacher R, Wängler B, Wängler C. PESIN Conjugates for Multimodal Imaging: Can Multimerization Compensate Charge Influences on Cell Binding Properties? A Case Study. Pharmaceuticals (Basel) 2021; 14:ph14060531. [PMID: 34199635 PMCID: PMC8226452 DOI: 10.3390/ph14060531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 11/16/2022] Open
Abstract
Recently, anionic charges were found to negatively influence the in vitro gastrin-releasing peptide receptor (GRPR) binding parameters of dually radioisotope and fluorescent dye labeled GRPR-specific peptide dimers. From this, the question arose if this adverse impact on in vitro GRP receptor affinities could be mitigated by a higher valency of peptide multimerization. For this purpose, we designed two different hybrid multimodal imaging units (MIUs), comprising either one or two click chemistry-compatible functional groups and reacted them with PESIN (PEG3-BBN7-14, PEG = polyethylene glycol) dimers to obtain a dually labeled peptide homodimer or homotetramer. Using this approach, other dually labeled peptide monomers, dimers, and tetramers can also be obtained, and the chelator and fluorescent dye can be adapted to specific requirements. The MIUs, as well as their peptidic conjugates, were evaluated in terms of their photophysical properties, radiolabeling efficiency with 68Ga and 64Cu, hydrophilicity, and achievable GRP receptor affinities. Here, the hydrophilicity and the GRP receptor binding affinities were found to be especially strongly influenced by the number of negative charges and peptide copies, showing logD (1-octanol-water-distribution coefficient) and IC50 (half maximal inhibitory concentration) values of -2.2 ± 0.1 and 59.1 ± 1.5 nM for the homodimer, and -1.9 ± 0.1 and 99.8 ± 3.2 nM for the homotetramer, respectively. From the obtained data, it can be concluded that the adverse influence of negatively charged building blocks on the in vitro GRP receptor binding properties of dually labeled PESIN multimers can, at least partly, be compensated for by the number of introduced peptide binding motives and the used molecular design.
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Affiliation(s)
- Ralph Hübner
- Biomedical Chemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; (M.M.); (D.B.); (H.D.); (B.J.)
- Institute of Inorganic Chemistry, University Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany; (A.P.); (V.F.)
- Correspondence: (R.H.); (C.W.)
| | - Alexa Paretzki
- Institute of Inorganic Chemistry, University Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany; (A.P.); (V.F.)
| | - Valeska von Kiedrowski
- Molecular Imaging and Radiochemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; (V.v.K.); (X.C.); (G.D.); (B.W.)
| | - Marco Maspero
- Biomedical Chemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; (M.M.); (D.B.); (H.D.); (B.J.)
- Department of Pharmaceutical Sciences, Medicinal Chemistry Section “Pietro Pratesi”, University of Milan, Via L. Mangiagalli 25, 20133 Milan, Italy;
| | - Xia Cheng
- Molecular Imaging and Radiochemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; (V.v.K.); (X.C.); (G.D.); (B.W.)
| | - Güllü Davarci
- Molecular Imaging and Radiochemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; (V.v.K.); (X.C.); (G.D.); (B.W.)
| | - Diana Braun
- Biomedical Chemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; (M.M.); (D.B.); (H.D.); (B.J.)
- Molecular Imaging and Radiochemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; (V.v.K.); (X.C.); (G.D.); (B.W.)
| | - Helen Damerow
- Biomedical Chemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; (M.M.); (D.B.); (H.D.); (B.J.)
| | - Benedikt Judmann
- Biomedical Chemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; (M.M.); (D.B.); (H.D.); (B.J.)
- Molecular Imaging and Radiochemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; (V.v.K.); (X.C.); (G.D.); (B.W.)
| | - Vasileios Filippou
- Institute of Inorganic Chemistry, University Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany; (A.P.); (V.F.)
| | - Clelia Dallanoce
- Department of Pharmaceutical Sciences, Medicinal Chemistry Section “Pietro Pratesi”, University of Milan, Via L. Mangiagalli 25, 20133 Milan, Italy;
| | - Ralf Schirrmacher
- Department of Oncology, Division of Oncological Imaging, University of Alberta, 11560 University Avenue, Edmonton, AB T6G 1Z2, Canada;
| | - Björn Wängler
- Molecular Imaging and Radiochemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; (V.v.K.); (X.C.); (G.D.); (B.W.)
| | - Carmen Wängler
- Biomedical Chemistry, Department of Clinical Radiology and Nuclear Medicine, Medical Faculty Mannheim of Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany; (M.M.); (D.B.); (H.D.); (B.J.)
- Correspondence: (R.H.); (C.W.)
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7
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Heing‐Becker I, Grötzinger C, Beindorff N, Prasad S, Erdmann S, Exner S, Haag R, Licha K. A Cyanine-Bridged Somatostatin Hybrid Probe for Multimodal SSTR2 Imaging in Vitro and in Vivo: Synthesis and Evaluation. Chembiochem 2021; 22:1307-1315. [PMID: 33238069 PMCID: PMC8048842 DOI: 10.1002/cbic.202000791] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Indexed: 12/20/2022]
Abstract
Multimodal imaging probes have attracted the interest of ongoing research, for example, for the surgical removal of tumors. Modular synthesis approaches allow the construction of hybrid probes consisting of a radiotracer, a fluorophore and a targeting unit. We present the synthesis of a new asymmetric bifunctional cyanine dye that can be used as a structural and functional linker for the construction of such hybrid probes. 68 Ga-DOTATATE, a well-characterized radiopeptide targeting the overexpressed somatostatin receptor subtype 2 (SSTR2) in neuroendocrine tumors, was labeled with our cyanine dye, thus providing additional information along with the data obtained from the radiotracer. We tested the SSTR2-targeting and imaging properties of the resulting probe 68 Ga-DOTA-ICC-TATE in vitro and in a tumor xenograft mouse model. Despite the close proximity between dye and pharmacophore, we observed a high binding affinity towards SSTR2 as well as elevated uptake in SSTR2-overexpressing tumors in the positron emission tomography (PET) scan and histological examination.
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Affiliation(s)
- Isabelle Heing‐Becker
- Institut für Chemie und BiochemieFreie Universität BerlinTakustr. 314195BerlinGermany
| | - Carsten Grötzinger
- Department of Hepatology and GastroenterologyCharité – Universitätsmedizin BerlinAugustenburger Platz 113353BerlinGermany
| | - Nicola Beindorff
- BERIC – Berlin Experimental Radionuclide Imaging CenterCharité – Universitätsmedizin BerlinAugustenburger Platz 113353BerlinGermany
| | - Sonal Prasad
- BERIC – Berlin Experimental Radionuclide Imaging CenterCharité – Universitätsmedizin BerlinAugustenburger Platz 113353BerlinGermany
- Department of Nuclear MedicineCharité – Universitätsmedizin BerlinAugustenburger Platz 113353BerlinGermany
| | - Sarah Erdmann
- Department of Hepatology and GastroenterologyCharité – Universitätsmedizin BerlinAugustenburger Platz 113353BerlinGermany
| | - Samantha Exner
- Department of Hepatology and GastroenterologyCharité – Universitätsmedizin BerlinAugustenburger Platz 113353BerlinGermany
| | - Rainer Haag
- Institut für Chemie und BiochemieFreie Universität BerlinTakustr. 314195BerlinGermany
| | - Kai Licha
- Institut für Chemie und BiochemieFreie Universität BerlinTakustr. 314195BerlinGermany
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8
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Swayambhu G, Bruno M, Gulick AM, Pfeifer BA. Siderophore natural products as pharmaceutical agents. Curr Opin Biotechnol 2021; 69:242-251. [PMID: 33640597 DOI: 10.1016/j.copbio.2021.01.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 01/09/2021] [Accepted: 01/25/2021] [Indexed: 11/27/2022]
Abstract
Siderophore natural products are characterized by an ability to tightly chelate metals. The origins of such compounds are often pathogenic microbes utilizing siderophores as virulence factors during host infection. The mechanism for siderophore formation typically involves the activity of nonribosomal peptide synthetases producing compounds across functional group classifications that include catecholate, phenolate, hydroxamate, and mixed categories. Though siderophore production has been a hallmark of pathogenicity, the evolutionarily-optimized binding abilities of siderophores suggest the possibility of re-directing the compounds towards alternative beneficial applications. In this mini-review, we will first describe siderophore formation origins before discussing alternative applications as pharmaceutical products. In so doing, we will cover examples and applications that include reducing metal overload, targeted antibiotic delivery, cancer treatment, vaccine development, and diagnostics. Included in this analysis will be a discussion on the native production hosts of siderophores and prospects for improvement in compound access through the adoption of heterologous biosynthesis.
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Affiliation(s)
- Girish Swayambhu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, United States
| | - Michael Bruno
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, United States
| | - Andrew M Gulick
- Department of Structural Biology, University at Buffalo, The State University of New York, Buffalo, NY, United States
| | - Blaine A Pfeifer
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, United States.
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9
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Hübner R, Cheng X, Wängler B, Wängler C. Functional Hybrid Molecules for the Visualization of Cancer: PESIN-Homodimers Combined with Multimodal Molecular Imaging Probes for Positron Emission Tomography and Optical Imaging: Suited for Tracking of GRPR-Positive Malignant Tissue*. Chemistry 2020; 26:16349-16356. [PMID: 32618007 PMCID: PMC7756681 DOI: 10.1002/chem.202002386] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Indexed: 12/16/2022]
Abstract
We describe multimodal imaging probes for gastrin-releasing peptide receptor (GRPR)-specific targeting suited for positron emission tomography and optical imaging (PET/OI), consisting of PESIN (PEG3 -BBN7-14 ) dimers connected to multimodal imaging subunits. These multimodal agents comprise a fluorescent dye for OI and the chelator ((1,4,7-triazacyclononane-4,7-diyl)diacetic acid-1-glutaric acid) (NODA-GA) for PET radiometal isotope labelling. Special focus was put on the influence of the used dyes on the properties of the whole bioconjugates. For this, several compounds with different fluorescent dyes and non-dye carrying subunits were synthesized and investigated. As fluorescent dyes, dansyl, NBD, derivatives of fluorescein, coumarin and rhodamine as well as three pyrilium-based dyes were employed. Considerable influence of the charge of the colored unit on hydrophilicity as well as in vitro target receptor binding was observed and classified. High radiochemical yields and purities were found during radiolabeling of the multimodal imaging subunits as well as their GRPR-specific bioconjugates with 68 Ga. Examinations of the photophysical properties of both molecule species displayed no loss or alteration of fluorescence characteristics.
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Affiliation(s)
- Ralph Hübner
- Biomedical Chemistry, Department of Clinical Radiology and Nuclear MedicineMedical Faculty Mannheim of Heidelberg UniversityTheodor-Kutzer-Ufer 1–368167MannheimGermany
| | - Xia Cheng
- Molecular Imaging and RadiochemistryDepartment of Clinical Radiology and Nuclear MedicineMedical Faculty Mannheim of Heidelberg UniversityTheodor-Kutzer-Ufer 1–368167MannheimGermany
| | - Björn Wängler
- Molecular Imaging and RadiochemistryDepartment of Clinical Radiology and Nuclear MedicineMedical Faculty Mannheim of Heidelberg UniversityTheodor-Kutzer-Ufer 1–368167MannheimGermany
| | - Carmen Wängler
- Biomedical Chemistry, Department of Clinical Radiology and Nuclear MedicineMedical Faculty Mannheim of Heidelberg UniversityTheodor-Kutzer-Ufer 1–368167MannheimGermany
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10
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Hydroxamate siderophores: Natural occurrence, chemical synthesis, iron binding affinity and use as Trojan horses against pathogens. Eur J Med Chem 2020; 208:112791. [DOI: 10.1016/j.ejmech.2020.112791] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 08/23/2020] [Accepted: 08/24/2020] [Indexed: 12/11/2022]
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11
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He K, Zeng S, Qian L. Recent progress in the molecular imaging of therapeutic monoclonal antibodies. J Pharm Anal 2020; 10:397-413. [PMID: 33133724 PMCID: PMC7591813 DOI: 10.1016/j.jpha.2020.07.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 06/01/2020] [Accepted: 07/21/2020] [Indexed: 12/14/2022] Open
Abstract
Therapeutic monoclonal antibodies have become one of the central components of the healthcare system and continuous efforts are made to bring innovative antibody therapeutics to patients in need. It is equally critical to acquire sufficient knowledge of their molecular structure and biological functions to ensure the efficacy and safety by incorporating new detection approaches since new challenges like individual differences and resistance are presented. Conventional techniques for determining antibody disposition including plasma drug concentration measurements using LC-MS or ELISA, and tissue distribution using immunohistochemistry and immunofluorescence are now complemented with molecular imaging modalities like positron emission tomography and near-infrared fluorescence imaging to obtain more dynamic information, while methods for characterization of antibody's interaction with the target antigen as well as visualization of its cellular and intercellular behavior are still under development. Recent progress in detecting therapeutic antibodies, in particular, the development of methods suitable for illustrating the molecular dynamics, is described here.
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Affiliation(s)
- Kaifeng He
- Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Su Zeng
- Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Linghui Qian
- Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
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12
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Ahn SH, Vaughn BA, Solis WA, Lupher ML, Hallam TJ, Boros E. Site-Specific 89Zr- and 111In-Radiolabeling and In Vivo Evaluation of Glycan-free Antibodies by Azide-Alkyne Cycloaddition with a Non-natural Amino Acid. Bioconjug Chem 2020; 31:1177-1187. [PMID: 32138509 DOI: 10.1021/acs.bioconjchem.0c00100] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Antibody-drug conjugates (ADCs) are a class of targeted therapeutics consisting of a monoclonal antibody coupled to a cytotoxic payload. Various bioconjugation methods for producing site-specific ADCs have been reported recently, in efforts to improve immunoreactivity and pharmacokinetics and minimize batch variance-potential issues associated with first-generation ADCs prepared via stochastic peptide coupling of lysines or reduced cysteines. Recently, cell-free protein synthesis of antibodies incorporating para-azidomethyl phenylalanine (pAMF) at specific locations within the protein sequence has emerged as a means to generate antibody-drug conjugates with strictly defined drug-antibody-ratio, leading to ADCs with markedly improved stability, activity, and specificity. The incorporation of pAMF enables the conjugation of payloads functionalized for strain-promoted azide-alkyne cycloaddition. Here, we introduce two dibenzylcyclooctyne-functionalized bifunctional chelators that enable the incorporation of radioisotopes for positron emission tomography with 89Zr (t1/2 = 78.4 h, β+ = 395 keV (22%), γ = 897 keV) or single photon emission computed tomography with 111In (t1/2 = 67.3 h, γ = 171 keV (91%), 245 keV (94%)) under physiologically compatible conditions. We show that the corresponding radiolabeled conjugates with site-specifically functionalized antibodies targeting HER2 are amenable to targeted molecular imaging of HER2+ expressing tumor xenografts in mice and exhibit a favorable biodistribution profile in comparison with conventional, glycosylated antibody conjugates generated by stochastic bioconjugation.
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Affiliation(s)
- Shin Hye Ahn
- Department of Chemistry, Stony Brook University, 100 Nicolls Road, Stony Brook, New York 11790, United States
| | - Brett A Vaughn
- Department of Chemistry, Stony Brook University, 100 Nicolls Road, Stony Brook, New York 11790, United States
| | - Willy A Solis
- Sutro Biopharma, Inc. 310 Utah Avenue, Suite 150, South San Francisco, California 94080, United States
| | - Mark L Lupher
- Sutro Biopharma, Inc. 310 Utah Avenue, Suite 150, South San Francisco, California 94080, United States
| | - Trevor J Hallam
- Sutro Biopharma, Inc. 310 Utah Avenue, Suite 150, South San Francisco, California 94080, United States
| | - Eszter Boros
- Department of Chemistry, Stony Brook University, 100 Nicolls Road, Stony Brook, New York 11790, United States
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Zhou Z, Austin GL, Shaffer R, Armstrong DD, Gentry MS. Antibody-Mediated Enzyme Therapeutics and Applications in Glycogen Storage Diseases. Trends Mol Med 2019; 25:1094-1109. [PMID: 31522955 PMCID: PMC6889062 DOI: 10.1016/j.molmed.2019.08.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 08/07/2019] [Accepted: 08/12/2019] [Indexed: 01/18/2023]
Abstract
The use of antibodies as targeting molecules or cell-penetrating tools has emerged at the forefront of pharmaceutical research. Antibody-directed therapies in the form of antibody-drug conjugates, immune modulators, and antibody-directed enzyme prodrugs have been most extensively utilized as hematological, rheumatological, and oncological therapies, but recent developments are identifying additional applications of antibody-mediated delivery systems. A novel application of this technology is for the treatment of glycogen storage disorders (GSDs) via an antibody-enzyme fusion (AEF) platform to penetrate cells and deliver an enzyme to the cytoplasm, nucleus, and/or other organelles. Exciting developments are currently underway for AEFs in the treatment of the GSDs Pompe disease and Lafora disease (LD). Antibody-based therapies are quickly becoming an integral part of modern disease therapeutics.
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Affiliation(s)
- Zhengqiu Zhou
- Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | - Grant L Austin
- Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY 40536, USA
| | | | | | - Matthew S Gentry
- Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY 40536, USA; Lafora Epilepsy Cure Initiative, University of Kentucky College of Medicine, Lexington, KY 40536, USA; Epilepsy and Brain Metabolism Alliance, University of Kentucky College of Medicine, Lexington, KY 40536, USA.
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Pandey A, Savino C, Ahn SH, Yang Z, Van Lanen SG, Boros E. Theranostic Gallium Siderophore Ciprofloxacin Conjugate with Broad Spectrum Antibiotic Potency. J Med Chem 2019; 62:9947-9960. [PMID: 31580658 DOI: 10.1021/acs.jmedchem.9b01388] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Pathogenic bacteria scavenge ferric iron from the host for survival and proliferation using small-molecular chelators, siderophores. Here, we introduce and assess the gallium(III) complex of ciprofloxacin-functionalized desferrichrome (D2) as a potential therapeutic for bacterial infection using an in vitro assay and radiochemical, tracer-based approach. Ga-D2 exhibits a minimum inhibitory concentration of 0.23 μM in Escherichia coli, in line with the parent fluoroquinolone antibiotic. Competitive and mutant strain assays show that Ga-D2 relies on FhuA-mediated transport for internalization. Ga-D2 is potent against Pseudomonas aeruginosa (3.8 μM), Staphylococcus aureus (0.94 μM), and Klebsiella pneumoniae (12.5 μM), while Fe-D2 is inactive in these strains. Radiochemical experiments with E. coli reveal that 67Ga-D2 is taken up more efficiently than 67Ga-citrate. In naive mice, 67Ga-D2 clears renally and is excreted 13% intact in the urine. These pharmacokinetic and bacterial growth inhibitory properties qualify Ga-D2 for future investigations as a diagnosis and treatment tool for infection.
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Affiliation(s)
- Apurva Pandey
- Department of Chemistry , Stony Brook University , 100 Nicolls Road , Stony Brook 11790 , New York , United States
| | - Chloé Savino
- Department of Chemistry , Stony Brook University , 100 Nicolls Road , Stony Brook 11790 , New York , United States
| | - Shin Hye Ahn
- Department of Chemistry , Stony Brook University , 100 Nicolls Road , Stony Brook 11790 , New York , United States
| | - Zhaoyong Yang
- Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Steven G Van Lanen
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Kentucky , Lexington 40536 , Kentucky , United States
| | - Eszter Boros
- Department of Chemistry , Stony Brook University , 100 Nicolls Road , Stony Brook 11790 , New York , United States
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