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Kubeil M, Neuber C, Starke M, Arndt C, Rodrigues Loureiro L, Hoffmann L, Feldmann A, Bachmann M, Pietzsch J, Comba P, Stephan H. 64Cu tumor labeling with hexadentate picolinic acid-based bispidine immunoconjugates. Chemistry 2024:e202400366. [PMID: 38506263 DOI: 10.1002/chem.202400366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 03/14/2024] [Accepted: 03/18/2024] [Indexed: 03/21/2024]
Abstract
Discussed are two picolinate appended bispidine ligands (3,7-diazabicyclo[3.3.1]nonane derivatives) in comparison with an earlier described bis-pyridine derivative, which are all known to strongly bind CuII. The radiopharmacological characterization of the two isomeric bispidine complexes includes quantitative labeling with 64CuII at ambient conditions with high radiochemical purities and yields (molar activities >200 MBq/nmol). Challenge experiments in presence of EDTA, cyclam, human serum and SOD demonstrate high stability and inertness of the 64Cu-bispidine complexes. Biodistribution studies performed in Wistar rats indicate a rapid renal elimination for both 64Cu-labeled chelates. The bispidine ligand with the picolinate group in N7 position was selected for further biological experiments, and its backbone was therefore substituted with a benzyl-NCS group at C9. Two tumor target modules (TMs), targeting prostate stem cell antigen (PSCA), overexpressed in prostate cancer, and the fibroblast activation protein (FAP) in fibrosarcoma, were selected for thiourea coupling with the NCS-functionalized ligand and lysine residues of TMs. Small animal PET experiments on tumor-bearing mice showed specific accumulation of the 64Cu-labeled TMs in PSCA- and FAP-overexpressing tumors (standardized uptake value (SUV) for PC3: 2.7±0.6 and HT1080: 7.2±1.25) with almost no uptake in wild type tumors.
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Affiliation(s)
- Manja Kubeil
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Christin Neuber
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Miriam Starke
- Universität Heidelberg, Anorganisch-Chemisches, Institut INF 270, 69120, Heidelberg, Germany
| | - Claudia Arndt
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstraße 400, 01328, Dresden, Germany
- Mildred Scheel Early Career Center, Faculty of Medicine Carl Gustav Carus, Technische Universiät Dresden, 01307, Dresden, Germany
| | - Liliana Rodrigues Loureiro
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Lydia Hoffmann
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Anja Feldmann
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstraße 400, 01328, Dresden, Germany
- National Center for Tumor Diseases Dresden (NCT/UCC), University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307, Dresden, Germany
- German Cancer Consortium (DKTK), partner site Dresden, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - Michael Bachmann
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstraße 400, 01328, Dresden, Germany
- National Center for Tumor Diseases Dresden (NCT/UCC), University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307, Dresden, Germany
- German Cancer Consortium (DKTK), partner site Dresden, and German Cancer Research Center (DKFZ), 69120, Heidelberg, Germany
| | - Jens Pietzsch
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstraße 400, 01328, Dresden, Germany
- Technische Universität Dresden, Faculty of Chemistry and Food Chemistry, School of Science, 01069, Dresden, Germany
| | - Peter Comba
- Universität Heidelberg, Anorganisch-Chemisches, Institut INF 270, 69120, Heidelberg, Germany
- Universität Heidelberg, Interdisciplinary Center for Scientific Computing, INF 205, 69120, Heidelberg, Germany
| | - Holger Stephan
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstraße 400, 01328, Dresden, Germany
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Perka S, Vuradi RK, Gopu S, Nambigari N, K VR, Sirasani S. Influence of Co(III) Polypyridyl Complexes on Luminescence Behavior, DNA Binding, Photocleavage, Antimicrobial Activity and Molecular Docking Studies. J Fluoresc 2021; 31:1009-1021. [PMID: 33880704 DOI: 10.1007/s10895-021-02727-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/23/2021] [Indexed: 10/21/2022]
Abstract
A new ligand FIPB = 5-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)furan-2-yl-2-boronic acid, having three cobalt(III) polypyridyl complexes [Co(phen)2(FIPB)]3+(1) {FIPB = 5-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)furan-2-yl-2-boronic acid}, (phen = 1,10-Phenanthroline), [Co(bpy)2(FIPB)]3+(2) (bpy = 2,2'bipyridyl), [Co(dmb)2(FIPB)]3+(3) (dmb = 4, 4'-dimethyl 2, 2'-bipyridine) have been synthesized and characterized by elemental analysis, ES-MS,1H-NMR, 13C-NMR, UV-Vis and FTIR. Their DNA binding behavior has been explored by various spectroscopic titrations and viscosity measurements, which indicated that all the complexes bind to calf thymus DNA by means of intercalation with different binding strengths. The binding properties of these all three complexes towards calf-thymus DNA (CT-DNA) have been investigated by UV-visible, emission spectroscopy and viscosity measurements.The experimental results suggested that three Co(III) complexes can intercalate into DNA base pairs,but with different binding affinities. Photo induced DNA cleavage studies have been performed and results indicate that three complexes efficiently cleave the pBR322-DNA in different forms. The three synthesized compounds were tested for antimicrobial activity by using Staphylococcus aureus and Bacillus subtilis organisms, these results indicated that complex 1 was more activity compared to other two complexes against both tested microbial strains. The in vitro cytotoxicity of these complexes was evaluatedby MTT assay, and complex 1 shows higher cytotoxicity than complex 2 and 3 on HeLa cells.
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Affiliation(s)
- Shyam Perka
- Department of Chemistry, UCS, Osmania University, Hyderabad, Telangana State, 500007, India
| | - Ravi Kumar Vuradi
- Department of Chemistry, UCS, Osmania University, Hyderabad, Telangana State, 500007, India
| | - Srinivas Gopu
- Department of Chemistry, Government Degree College for Women, Karimnagar, Telangana State, 505001, India
| | - Navaneetha Nambigari
- Department of Chemistry, UCS, Saifabad, Osmania University, Hyderabad, Telangana State, 500007, India
| | - Venugopal Reddy K
- Department of Chemistry, UCS, Osmania University, Hyderabad, Telangana State, 500007, India
| | - Satyanarayana Sirasani
- Department of Chemistry, UCS, Osmania University, Hyderabad, Telangana State, 500007, India.
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Bruchertseifer F, Comba P, Martin B, Morgenstern A, Notni J, Starke M, Wadepohl H. First-Generation Bispidine Chelators for 213 Bi III Radiopharmaceutical Applications. ChemMedChem 2020; 15:1591-1600. [PMID: 32613737 PMCID: PMC7496608 DOI: 10.1002/cmdc.202000361] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Indexed: 01/01/2023]
Abstract
Hepta- and octadentate bispidines (3,7-diazabicyclo[3.3.1]nonane, diaza-adamantane) with acetate, methyl-pyridine, and methyl-picolinate pendant groups at the amine donors of the bispidine platform have been prepared and used to investigate BiIII coordination chemistry. Crystal structure and solution spectroscopic data (NMR spectroscopy and mass spectrometry) confirm that the rigid and relatively large bispidine cavity with an axially distorted geometry is well suited for BiIII and in all cases forms nine-coordinate complexes; this is supported by an established hole size and shape analysis. It follows that nonadentate bispidines probably will be more suited as bifunctional chelators for 213 BiIII -based radiopharmaceuticals. However, two isomeric picolinate-/acetate-based heptadentate ligands already show very efficient complexation kinetics with 213 BiIII at ambient temperature and kinetic stability that is comparable with the standard ligands used in this field. The experimentally determined hydrophilicities (log D7.4 values) show that the BiIII complexes reported are relatively hydrophilic and well suited for medicinal applications. We also present a very efficient and relatively accurate method to compute charge distributions and hydrophilicities, and this will help to further optimize the systems reported here.
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Affiliation(s)
- Frank Bruchertseifer
- European Commission, Joint Research Centre/>Directorate for Nuclear Safety and SecurityHermann-von-Helmholtz-Platz 176344Eggenstein-LeopoldshafenGermany
| | - Peter Comba
- Universität Heidelberg, Anorganisch-Chemisches InstitutNeuenheimer Feld 27069120HeidelbergGermany
- Universität Heidelberg Interdisciplinary Center for Scientific Computing In NeuenheimerFeld 20569120HeidelbergGermany
| | - Bodo Martin
- Universität Heidelberg, Anorganisch-Chemisches InstitutNeuenheimer Feld 27069120HeidelbergGermany
- Universität Heidelberg Interdisciplinary Center for Scientific Computing In NeuenheimerFeld 20569120HeidelbergGermany
| | - Alfred Morgenstern
- European Commission, Joint Research Centre/>Directorate for Nuclear Safety and SecurityHermann-von-Helmholtz-Platz 176344Eggenstein-LeopoldshafenGermany
| | - Johannes Notni
- Technische Universität München Institut für Pathologie und Pathologische AnatomieTrogerstr. 1881675MunichGermany
| | - Miriam Starke
- Universität Heidelberg, Anorganisch-Chemisches InstitutNeuenheimer Feld 27069120HeidelbergGermany
| | - Hubert Wadepohl
- Universität Heidelberg, Anorganisch-Chemisches InstitutNeuenheimer Feld 27069120HeidelbergGermany
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Song LF, Sengupta A, Merz KM. Thermodynamics of Transition Metal Ion Binding to Proteins. J Am Chem Soc 2020; 142:6365-6374. [PMID: 32141296 DOI: 10.1021/jacs.0c01329] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Modeling the thermodynamics of a transition metal (TM) ion assembly be it in proteins or in coordination complexes affords us a better understanding of the assembly and function of metalloclusters in diverse application areas including metal organic framework design, TM-based catalyst design, the trafficking of TM ions in biological systems, and drug design in metalloprotein platforms. While the structural details of TM ions bound to metalloproteins are generally well understood via experimental and computational approaches, accurate studies describing the thermodynamics of TM ion binding are rare. Herein, we demonstrate that we can obtain accurate structural and absolute binding free energies of Co2+ and Ni2+ to the enzyme glyoxalase I using an optimized 12-6-4 (m12-6-4) potential. Critically, this model simultaneously reproduces the solvation free energy of the individual TM ions and reproduces the thermodynamics of TM ion-ligand coordination as well as the thermodynamics of TM ion binding to a protein active site unlike extant models. We find the incorporation of the thermodynamics associated with protonation state changes for the TM ion (un)binding to be crucial. The high accuracy of m12-6-4 potential in this study presents an accurate route to explore more complicated processes associated with TM cluster assembly and TM ion transport.
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Rakshit A, Khatua K, Shanbhag V, Comba P, Datta A. Cu 2+ selective chelators relieve copper-induced oxidative stress in vivo. Chem Sci 2018; 9:7916-7930. [PMID: 30450181 PMCID: PMC6202919 DOI: 10.1039/c8sc04041a] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 09/29/2018] [Indexed: 02/06/2023] Open
Abstract
Copper ions are essential for biological function yet are severely detrimental when present in excess. At the molecular level, copper ions catalyze the production of hydroxyl radicals that can irreversibly alter essential bio-molecules. Hence, selective copper chelators that can remove excess copper ions and alleviate oxidative stress will help assuage copper-overload diseases. However, most currently available chelators are non-specific leading to multiple undesirable side-effects. The challenge is to build chelators that can bind to copper ions with high affinity but leave the levels of essential metal ions unaltered. Here we report the design and development of redox-state selective Cu ion chelators that have 108 times higher conditional stability constants toward Cu2+ compared to both Cu+ and other biologically relevant metal ions. This unique selectivity allows the specific removal of Cu2+ ions that would be available only under pathophysiological metal overload and oxidative stress conditions and provides access to effective removal of the aberrant redox-cycling Cu ion pool without affecting the essential non-redox cycling Cu+ labile pool. We have shown that the chelators provide distinct protection against copper-induced oxidative stress in vitro and in live cells via selective Cu2+ ion chelation. Notably, the chelators afford significant reduction in Cu-induced oxidative damage in Atp7a-/- Menkes disease model cells that have endogenously high levels of Cu ions. Finally, in vivo testing of our chelators in a live zebrafish larval model demonstrate their protective properties against copper-induced oxidative stress.
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Affiliation(s)
- Ananya Rakshit
- Department of Chemical Sciences , Tata Institute of Fundamental Research , 1 Homi Bhabha Road, Colaba , Mumbai-400005 , India .
| | - Kaustav Khatua
- Department of Chemical Sciences , Tata Institute of Fundamental Research , 1 Homi Bhabha Road, Colaba , Mumbai-400005 , India .
| | - Vinit Shanbhag
- Department of Biochemistry , Christopher S. Bond Life Science Center , University of Missouri , Columbia , USA
| | - Peter Comba
- Universität Heidelberg , Anorganisch-Chemisches Institut , Interdisciplinary Center for Scientific Computing , INF 270 , D-69120 Heidelberg , Germany
| | - Ankona Datta
- Department of Chemical Sciences , Tata Institute of Fundamental Research , 1 Homi Bhabha Road, Colaba , Mumbai-400005 , India .
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Abstract
Radiometal based radiopharmaceuticals for imaging and therapy require selective ligands (bifunctional chelators, BFCs) that form metal complexes, which are inert against trans-chelation under physiological conditions, linked to a biological vector, directing them to the targeted tissue. Bispidine ligands with a very rigid backbone and widely variable donor sets are reviewed as an ideal class of BFCs, and recent applications are discussed.
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Affiliation(s)
- Peter Comba
- Ruprecht-Karls Universität Heidelberg
- Anorganisch-Chemisches Institut and Interdisciplinary Center for Scientific Computing (IWR)
- 69120 Heidelberg
- Germany
| | - Marion Kerscher
- Ruprecht-Karls Universität Heidelberg
- Anorganisch-Chemisches Institut and Interdisciplinary Center for Scientific Computing (IWR)
- 69120 Heidelberg
- Germany
| | - Katharina Rück
- Ruprecht-Karls Universität Heidelberg
- Anorganisch-Chemisches Institut and Interdisciplinary Center for Scientific Computing (IWR)
- 69120 Heidelberg
- Germany
| | - Miriam Starke
- Ruprecht-Karls Universität Heidelberg
- Anorganisch-Chemisches Institut and Interdisciplinary Center for Scientific Computing (IWR)
- 69120 Heidelberg
- Germany
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Abstract
Metal ions play significant roles in numerous fields including chemistry, geochemistry, biochemistry, and materials science. With computational tools increasingly becoming important in chemical research, methods have emerged to effectively face the challenge of modeling metal ions in the gas, aqueous, and solid phases. Herein, we review both quantum and classical modeling strategies for metal ion-containing systems that have been developed over the past few decades. This Review focuses on classical metal ion modeling based on unpolarized models (including the nonbonded, bonded, cationic dummy atom, and combined models), polarizable models (e.g., the fluctuating charge, Drude oscillator, and the induced dipole models), the angular overlap model, and valence bond-based models. Quantum mechanical studies of metal ion-containing systems at the semiempirical, ab initio, and density functional levels of theory are reviewed as well with a particular focus on how these methods inform classical modeling efforts. Finally, conclusions and future prospects and directions are offered that will further enhance the classical modeling of metal ion-containing systems.
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Affiliation(s)
| | - Kenneth M. Merz
- Department of Chemistry, Department of Biochemistry and Molecular Biology, and Institute of Cyber-Enabled Research, Michigan State University, East Lansing, Michigan 48824, United States
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Saleh M, Hofer TS. Palladium(ii) in liquid ammonia: an investigation of structural and dynamical properties by applying quantum mechanical charge field molecular dynamics (QMCF-MD). Dalton Trans 2017; 46:9630-9638. [DOI: 10.1039/c7dt01548h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structural and dynamical properties of Pd2+ in liquid ammonia have been investigated via quantum mechanical charge field molecular dynamics.
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Affiliation(s)
- Muhammad Saleh
- Theoretical Chemistry Division
- Institute of General
- Inorganic and Theoretical Chemistry
- Center for Chemistry and Biomedicine
- University of Innsbruck
| | - Thomas S. Hofer
- Theoretical Chemistry Division
- Institute of General
- Inorganic and Theoretical Chemistry
- Center for Chemistry and Biomedicine
- University of Innsbruck
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Ćendić M, Matović ZD, Deeth RJ. Molecular modeling for Cu(II)-aminopolycarboxylate complexes: Structures, conformational energies, and ligand binding affinities. J Comput Chem 2013; 34:2687-96. [DOI: 10.1002/jcc.23437] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 08/13/2013] [Accepted: 08/15/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Marina Ćendić
- Department of Chemistry, Faculty of Science; University of Kragujevac; Kragujevac SRB-34000 Serbia
| | - Zoran D. Matović
- Department of Chemistry, Faculty of Science; University of Kragujevac; Kragujevac SRB-34000 Serbia
| | - Robert J. Deeth
- Department of Chemistry, Inorganic Computational Chemistry Group; University of Warwick; Coventry CV4 7AL United Kingdom
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Comba P, Hunoldt S, Morgen M, Pietzsch J, Stephan H, Wadepohl H. Optimization of Pentadentate Bispidines as Bifunctional Chelators for 64Cu Positron Emission Tomography (PET). Inorg Chem 2013; 52:8131-43. [DOI: 10.1021/ic4008685] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Peter Comba
- Anorganisch-Chemisches Institut, Universität Heidelberg, INF 270, D-69120 Heidelberg, Germany
| | - Sebastian Hunoldt
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, D-01314 Dresden, Germany
| | - Michael Morgen
- Anorganisch-Chemisches Institut, Universität Heidelberg, INF 270, D-69120 Heidelberg, Germany
| | - Jens Pietzsch
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, D-01314 Dresden, Germany
- Department of Chemistry and Food Chemistry, University of Technology Dresden, D-01062 Dresden, Germany
| | - Holger Stephan
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, D-01314 Dresden, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Universität Heidelberg, INF 270, D-69120 Heidelberg, Germany
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Comba P, Martin B, Sanyal A, Stephan H. The computation of lipophilicities of 64Cu PET systems based on a novel approach for fluctuating charges. Dalton Trans 2013; 42:11066-73. [DOI: 10.1039/c3dt51049b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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