1
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Dal Forno GM, Latocheski E, Beatriz Machado A, Becher J, Dunsmore L, St John AL, Oliveira BL, Navo CD, Jiménez-Osés G, Fior R, Domingos JB, Bernardes GJL. Expanding Transition Metal-Mediated Bioorthogonal Decaging to Include C-C Bond Cleavage Reactions. J Am Chem Soc 2023; 145:10790-10799. [PMID: 37133984 DOI: 10.1021/jacs.3c01960] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The ability to control the activation of prodrugs by transition metals has been shown to have great potential for controlled drug release in cancer cells. However, the strategies developed so far promote the cleavage of C-O or C-N bonds, which limits the scope of drugs to only those that present amino or hydroxyl groups. Here, we report the decaging of an ortho-quinone prodrug, a propargylated β-lapachone derivative, through a palladium-mediated C-C bond cleavage. The reaction's kinetic and mechanistic behavior was studied under biological conditions along with computer modeling. The results indicate that palladium (II) is the active species for the depropargylation reaction, activating the triple bond for nucleophilic attack by a water molecule before the C-C bond cleavage takes place. Palladium iodide nanoparticles were found to efficiently trigger the C-C bond cleavage reaction under biocompatible conditions. In drug activation assays in cells, the protected analogue of β-lapachone was activated by nontoxic amounts of nanoparticles, which restored drug toxicity. The palladium-mediated ortho-quinone prodrug activation was further demonstrated in zebrafish tumor xenografts, which resulted in a significant anti-tumoral effect. This work expands the transition-metal-mediated bioorthogonal decaging toolbox to include cleavage of C-C bonds and payloads that were previously not accessible by conventional strategies.
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Affiliation(s)
- Gean M Dal Forno
- Department of Chemistry, Federal University of Santa Catarina─UFSC, Campus Trindade, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Eloah Latocheski
- Department of Chemistry, Federal University of Santa Catarina─UFSC, Campus Trindade, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Ana Beatriz Machado
- Champalimaud Centre for the Unknown, Champalimaud Foundation, Av. Brasilia, Lisboa 1400-038, Portugal
| | - Julie Becher
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Lavinia Dunsmore
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Albert L St John
- Department of Chemistry, Federal University of Santa Catarina─UFSC, Campus Trindade, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Bruno L Oliveira
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Lisboa 1649-028, Portugal
| | - Claudio D Navo
- Center for Cooperative Research in Biosciences (CIC BioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, Derio 48160, Spain
| | - Gonzalo Jiménez-Osés
- Center for Cooperative Research in Biosciences (CIC BioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, Derio 48160, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao 48013, Spain
| | - Rita Fior
- Champalimaud Centre for the Unknown, Champalimaud Foundation, Av. Brasilia, Lisboa 1400-038, Portugal
| | - Josiel B Domingos
- Department of Chemistry, Federal University of Santa Catarina─UFSC, Campus Trindade, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Gonçalo J L Bernardes
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Lisboa 1649-028, Portugal
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2
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Sousa B, de Almeida CR, Barahona AF, Lopes R, Martins-Logrado A, Cavaco M, Neves V, Carvalho LA, Labão-Almeida C, Coelho AR, Leal Bento M, Lopes RMR, Oliveira BL, Castanho MARB, Neumeister P, Deutsch A, Vladimer GI, Krall N, João C, Corzana F, Seixas JD, Fior R, Bernardes GJL. Selective Inhibition of Bruton's Tyrosine Kinase by a Designed Covalent Ligand Leads to Potent Therapeutic Efficacy in Blood Cancers Relative to Clinically Used Inhibitors. ACS Pharmacol Transl Sci 2022; 5:1156-1168. [PMID: 36407952 PMCID: PMC9667546 DOI: 10.1021/acsptsci.2c00163] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Indexed: 11/06/2022]
Abstract
Bruton's tyrosine kinase (BTK) is a member of the TEC-family kinases and crucial for the proliferation and differentiation of B-cells. We evaluated the therapeutic potential of a covalent inhibitor (JS25) with nanomolar potency against BTK and with a more desirable selectivity and inhibitory profile compared to the FDA-approved BTK inhibitors ibrutinib and acalabrutinib. Structural prediction of the BTK/JS25 complex revealed sequestration of Tyr551 that leads to BTK's inactivation. JS25 also inhibited the proliferation of myeloid and lymphoid B-cell cancer cell lines. Its therapeutic potential was further tested against ibrutinib in preclinical models of B-cell cancers. JS25 treatment induced a more pronounced cell death in a murine xenograft model of Burkitt's lymphoma, causing a 30-40% reduction of the subcutaneous tumor and an overall reduction in the percentage of metastasis and secondary tumor formation. In a patient model of diffuse large B-cell lymphoma, the drug response of JS25 was higher than that of ibrutinib, leading to a 64% "on-target" efficacy. Finally, in zebrafish patient-derived xenografts of chronic lymphocytic leukemia, JS25 was faster and more effective in decreasing tumor burden, producing superior therapeutic effects compared to ibrutinib. We expect JS25 to become therapeutically relevant as a BTK inhibitor and to find applications in the treatment of hematological cancers and other pathologies with unmet clinical treatment.
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Affiliation(s)
- Bárbara
B. Sousa
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina,
Universidade de Lisboa, Avenida Prof. Egas Moniz, 1649-028, Lisbon, Portugal
| | | | - Ana F. Barahona
- Champalimaud
Foundation, Avenida de Brasília, 1400-038, Lisbon, Portugal
| | - Raquel Lopes
- Champalimaud
Foundation, Avenida de Brasília, 1400-038, Lisbon, Portugal
| | | | - Marco Cavaco
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina,
Universidade de Lisboa, Avenida Prof. Egas Moniz, 1649-028, Lisbon, Portugal
| | - Vera Neves
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina,
Universidade de Lisboa, Avenida Prof. Egas Moniz, 1649-028, Lisbon, Portugal
| | - Luís A.
R. Carvalho
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | - Carlos Labão-Almeida
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina,
Universidade de Lisboa, Avenida Prof. Egas Moniz, 1649-028, Lisbon, Portugal
| | - Ana R. Coelho
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina,
Universidade de Lisboa, Avenida Prof. Egas Moniz, 1649-028, Lisbon, Portugal
| | - Marta Leal Bento
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina,
Universidade de Lisboa, Avenida Prof. Egas Moniz, 1649-028, Lisbon, Portugal
- Centro
Hospitalar Lisboa Norte, Department of Hematology and Bone Marrow
Transplantation, Avenida
Prof. Egas Moniz, 1649-035 Lisbon, Portugal
| | - Ricardo M. R.
M. Lopes
- Research
Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, 1600-277 Lisbon, Portugal
| | - Bruno L. Oliveira
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina,
Universidade de Lisboa, Avenida Prof. Egas Moniz, 1649-028, Lisbon, Portugal
| | - Miguel A. R. B. Castanho
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina,
Universidade de Lisboa, Avenida Prof. Egas Moniz, 1649-028, Lisbon, Portugal
| | - Peter Neumeister
- Division
of Hematology, Medical University of Graz, Auenbruggerplatz 38, 8036 Graz, Austria
| | - Alexander Deutsch
- Division
of Hematology, Medical University of Graz, Auenbruggerplatz 38, 8036 Graz, Austria
| | - Gregory I. Vladimer
- Exscientia, The Schrödinger Building,
Oxford Science Park, Oxford OX4 4GE, U.K.
| | - Nikolaus Krall
- Exscientia, The Schrödinger Building,
Oxford Science Park, Oxford OX4 4GE, U.K.
| | - Cristina João
- Champalimaud
Foundation, Avenida de Brasília, 1400-038, Lisbon, Portugal
| | - Francisco Corzana
- Centro
de Investigación en Síntesis Química, Departamento
de Química, Universidad de La Rioja, 26006 Logroño, Spain
| | - João D. Seixas
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina,
Universidade de Lisboa, Avenida Prof. Egas Moniz, 1649-028, Lisbon, Portugal
- TARGTEX
S.A., Avenida Tenente
Valadim, N°17, 2F, 2560-275 Torres Vedras, Portugal
| | - Rita Fior
- Champalimaud
Foundation, Avenida de Brasília, 1400-038, Lisbon, Portugal
| | - Gonçalo J. L. Bernardes
- Instituto
de Medicina Molecular João Lobo Antunes, Faculdade de Medicina,
Universidade de Lisboa, Avenida Prof. Egas Moniz, 1649-028, Lisbon, Portugal
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
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3
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Zawada Z, Guo Z, Oliveira BL, Navo CD, Li H, Cal PMSD, Corzana F, Jiménez-Osés G, Bernardes GJL. Arylethynyltrifluoroborate Dienophiles for on Demand Activation of IEDDA Reactions. Bioconjug Chem 2021; 32:1812-1822. [PMID: 34264651 PMCID: PMC8806140 DOI: 10.1021/acs.bioconjchem.1c00276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Strained
alkenes and alkynes are the predominant dienophiles used
in inverse electron demand Diels–Alder (IEDDA) reactions. However,
their instability, cross-reactivity, and accessibility are problematic.
Unstrained dienophiles, although physiologically stable and synthetically
accessible, react with tetrazines significantly slower relative to
strained variants. Here we report the development of potassium arylethynyltrifluoroborates
as unstrained dienophiles for fast, chemically triggered IEDDA reactions.
By varying the substituents on the tetrazine (e.g., pyridyl- to benzyl-substituents),
cycloaddition kinetics can vary from fast (k2 = 21 M–1 s–1) to no reaction
with an alkyne-BF3 dienophile. The reported system was
applied to protein labeling both in the test tube and fixed cells
and even enabled mutually orthogonal labeling of two distinct proteins.
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Affiliation(s)
- Zbigniew Zawada
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, United Kingdom
| | - Zijian Guo
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, United Kingdom
| | - Bruno L Oliveira
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, United Kingdom.,Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Claudio D Navo
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technological Park, Building 801A, 48160 Derio-Bizkaia, Spain
| | - He Li
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, United Kingdom
| | - Pedro M S D Cal
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Francisco Corzana
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño, Spain
| | - Gonzalo Jiménez-Osés
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technological Park, Building 801A, 48160 Derio-Bizkaia, Spain.,lkerbasque, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
| | - Gonçalo J L Bernardes
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, United Kingdom.,Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
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4
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Ferreira VFC, Oliveira BL, D'Onofrio A, Farinha CM, Gano L, Paulo A, Bernardes GJL, Mendes F. In Vivo Pretargeting Based on Cysteine-Selective Antibody Modification with IEDDA Bioorthogonal Handles for Click Chemistry. Bioconjug Chem 2020; 32:121-132. [PMID: 33295756 DOI: 10.1021/acs.bioconjchem.0c00551] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Pretargeted imaging has emerged as an effective multistep strategy aiming to improve imaging contrast and reduce patient radiation exposure through decoupling of the radioactivity from the targeting vector. The inverse electron-demand Diels-Alder (IEDDA) reaction between a trans-cyclooctene (TCO)-conjugated antibody and a labeled tetrazine holds great promise for pretargeted imaging applications due to its bioorthogonality, rapid kinetics under mild conditions, and formation of stable products. Herein, we describe the use of functionalized carbonylacrylic reagents for site-specific incorporation of TCO onto a human epidermal growth factor receptor 2 (HER2) antibody (THIOMAB) containing an engineered unpaired cysteine residue, generating homogeneous conjugates. Precise labeling of THIOMAB-TCO with a fluorescent or radiolabeled tetrazine revealed the potential of the TCO-functionalized antibody for imaging the HER2 after pretargeting in a cellular context in a HER2 positive breast cancer cell line. Control studies with MDA-MD-231 cells, which do not express HER2, further confirmed the target specificity of the modified antibody. THIOMAB-TCO was also evaluated in vivo after pretargeting and subsequent administration of an 111In-labeled tetrazine. Biodistribution studies in breast cancer tumor-bearing mice showed a significant activity accumulation on HER2+ tumors, which was 2.6-fold higher than in HER2- tumors. Additionally, biodistribution studies with THIOMAB without the TCO handle also resulted in a decreased uptake of 111In-DOTA-Tz on HER2+ tumors. Altogether, these results clearly indicate the occurrence of the click reaction at the tumor site, i.e., pretargeting of SK-BR-3 HER2-expressing cells with THIOMAB-TCO and reaction through the TCO moiety present in the antibody. The combined advantages of site-selectivity and stability of TCO tagged-antibodies could allow application of biorthogonal chemistry strategies for pretargeting imaging with minimal side-reactions and background.
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Affiliation(s)
- Vera F C Ferreira
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Bruno L Oliveira
- Instituto de Medicina Molecular João Lobo Antunes (iMM-JLA), Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Alice D'Onofrio
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Carlos M Farinha
- Biosystems and Integrative Sciences Institute (BioISI), Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Lurdes Gano
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal.,Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - António Paulo
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal.,Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - Gonçalo J L Bernardes
- Instituto de Medicina Molecular João Lobo Antunes (iMM-JLA), Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal.,Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, United Kingdom
| | - Filipa Mendes
- Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal.,Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
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5
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Oliveira BL, Stenton BJ, Unnikrishnan VB, de Almeida CR, Conde J, Negrão M, Schneider FSS, Cordeiro C, Ferreira MG, Caramori GF, Domingos JB, Fior R, Bernardes GJL. Platinum-Triggered Bond-Cleavage of Pentynoyl Amide and N-Propargyl Handles for Drug-Activation. J Am Chem Soc 2020; 142:10869-10880. [PMID: 32456416 PMCID: PMC7304066 DOI: 10.1021/jacs.0c01622] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
![]()
The
ability to create ways to control drug activation at specific
tissues while sparing healthy tissues remains a major challenge. The
administration of exogenous target-specific triggers offers the potential
for traceless release of active drugs on tumor sites from antibody–drug
conjugates (ADCs) and caged prodrugs. We have developed a metal-mediated
bond-cleavage reaction that uses platinum complexes [K2PtCl4 or Cisplatin (CisPt)] for drug activation. Key to
the success of the reaction is a water-promoted activation process
that triggers the reactivity of the platinum complexes. Under these
conditions, the decaging of pentynoyl tertiary amides and N-propargyls occurs rapidly in aqueous systems. In cells,
the protected analogues of cytotoxic drugs 5-fluorouracil (5-FU) and
monomethyl auristatin E (MMAE) are partially activated by nontoxic
amounts of platinum salts. Additionally, a noninternalizing ADC built
with a pentynoyl traceless linker that features a tertiary amide protected
MMAE was also decaged in the presence of platinum salts for extracellular
drug release in cancer cells. Finally, CisPt-mediated prodrug activation
of a propargyl derivative of 5-FU was shown in a colorectal zebrafish
xenograft model that led to significant reductions in tumor size.
Overall, our results reveal a new metal-based cleavable reaction that
expands the application of platinum complexes beyond those in catalysis
and cancer therapy.
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Affiliation(s)
- Bruno L Oliveira
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom.,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Benjamin J Stenton
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - V B Unnikrishnan
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Cátia Rebelo de Almeida
- Champalimaud Centre for the Unknown, Champalimaud Foundation, Avenida Brasilia, 1400-038 Lisboa, Portugal
| | - João Conde
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Magda Negrão
- Champalimaud Centre for the Unknown, Champalimaud Foundation, Avenida Brasilia, 1400-038 Lisboa, Portugal
| | - Felipe S S Schneider
- Department of Chemistry, Federal University of Santa Catarina-UFSC, Campus Trindade, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Carlos Cordeiro
- Laboratório de FT-ICR e Espectrometria de Massa Estrutural, Faculdade de Ciências da Universidade de Lisboa, Campo-Grande, 1749-016 Lisboa, Portugal
| | - Miguel Godinho Ferreira
- Champalimaud Centre for the Unknown, Champalimaud Foundation, Avenida Brasilia, 1400-038 Lisboa, Portugal.,Institute for Research on Cancer and Aging of Nice (IRCAN), Université Côte d'Azur, UMR7284 U1081 UNS, 06107 Nice, France
| | - Giovanni F Caramori
- Department of Chemistry, Federal University of Santa Catarina-UFSC, Campus Trindade, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Josiel B Domingos
- Department of Chemistry, Federal University of Santa Catarina-UFSC, Campus Trindade, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Rita Fior
- Champalimaud Centre for the Unknown, Champalimaud Foundation, Avenida Brasilia, 1400-038 Lisboa, Portugal
| | - Gonçalo J L Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom.,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
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6
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Davies S, Oliveira BL, Bernardes GJL. Development of a self-immolative linker for tetrazine-triggered release of alcohols in cells. Org Biomol Chem 2020; 17:5725-5730. [PMID: 31135016 DOI: 10.1039/c9ob01167f] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Bioorthogonal decaging reactions are a promising strategy for prodrug activation because they involve bond cleavage to release a molecule of interest. The trans-cyclooctene (TCO)-tetrazine inverse electron-demand Diels-Alder reaction has been widely applied in vivo for decaging of amine prodrugs, however, the release of alcohol-containing bioactive compounds has been less well studied. Here, we report a TCO-carbamate benzyl ether self-immolative linker for the release of OH-molecules upon reaction with a tetrazine trigger. The benzyl ether linker proved to be highly stable and can rapidly liberate alcohols under physiological conditions upon reaction with tetrazines. The mechanism and decaging yield were systematically examined by fluorescence and HPLC analysis by using a fluorogenic TCO-benzyl ether-coumarin probe and different 3,6-substituted tetrazine derivatives. This study revealed that decaging occurs rapidly (t1/2 = 27 min) and the cycloaddition step happens within seconds (t1/2 = 7 s) with reaction rates of ≈100 M-1 s-1. Importantly, the reaction is compatible with living organisms as demonstrated by the decaging of a prodrug of the antibacterial compound triclosan in the presence of live E. Coli, that resulted in complete cell killing by action of the released "OH-active drug". Overall, this work describes a new linker for masking alcohol functionality that can be rapidly reinstated through tetrazine-triggered decaging.
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Affiliation(s)
- Sarah Davies
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge, UK.
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7
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Latocheski E, Dal Forno GM, Ferreira TM, Oliveira BL, Bernardes GJL, Domingos JB. Mechanistic insights into transition metal-mediated bioorthogonal uncaging reactions. Chem Soc Rev 2020; 49:7710-7729. [DOI: 10.1039/d0cs00630k] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review assesses the mechanistic aspects of transition metal-mediated uncaging reactions, with the goal of aiding the rational development of new caging groups/catalysts for chemical biology and drug-delivery applications.
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Affiliation(s)
- Eloah Latocheski
- LaCBio – Laboratory of Biomimetic Catalysis
- Department of Chemistry
- Federal University of Santa Catarina – UFSC
- 88040-900 Florianópolis
- Brazil
| | - Gean M. Dal Forno
- LaCBio – Laboratory of Biomimetic Catalysis
- Department of Chemistry
- Federal University of Santa Catarina – UFSC
- 88040-900 Florianópolis
- Brazil
| | - Thuany M. Ferreira
- LaCBio – Laboratory of Biomimetic Catalysis
- Department of Chemistry
- Federal University of Santa Catarina – UFSC
- 88040-900 Florianópolis
- Brazil
| | - Bruno L. Oliveira
- Department of Chemistry
- University of Cambridge
- CB2 1EW Cambridge
- UK
- Instituto de Medicina Molecular
| | - Gonçalo J. L. Bernardes
- Department of Chemistry
- University of Cambridge
- CB2 1EW Cambridge
- UK
- Instituto de Medicina Molecular
| | - Josiel B. Domingos
- LaCBio – Laboratory of Biomimetic Catalysis
- Department of Chemistry
- Federal University of Santa Catarina – UFSC
- 88040-900 Florianópolis
- Brazil
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8
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Fasoula A, Moloney BM, Duchesne L, Cano JDG, Oliveira BL, Bernard JG, Kerin MJ. Super-resolution radar imaging for breast cancer detection with microwaves: the integrated information selection criteria. Annu Int Conf IEEE Eng Med Biol Soc 2019; 2019:1868-1874. [PMID: 31946262 DOI: 10.1109/embc.2019.8857924] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This paper focuses on the data preprocessing scheme, as well as on the frequency selection and spatial filtering modules integrated with a Time-Reversal Multiple Signal Classification (TR-MUSIC) algorithm, for microwave breast imaging. This algorithm is part of the data processing chain of the Wavelia Microwave Breast Imaging (MBI) system prototype, which has been recently installed at the University Hospital of Galway, Ireland, for a first-in-human clinical trial. Indicative results from application of the algorithm on an experimental phantom dataset, and on a first patient dataset, are presented in this paper. Good correspondence between the two datasets is demonstrated, confirming the validity of the experimental setup used so far for the on-site acceptance of the Wavelia system, after installation at the hospital for clinical testing.
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9
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Davies S, Qiao L, Oliveira BL, Navo CD, Jiménez-Osés G, Bernardes GJL. Tetrazine-Triggered Release of Carboxylic-Acid-Containing Molecules for Activation of an Anti-inflammatory Drug. Chembiochem 2019. [PMID: 30773780 DOI: 10.7659/j.issn.1005-6947.2019.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
In addition to its use for the study of biomolecules in living systems, bioorthogonal chemistry has emerged as a promising strategy to enable protein or drug activation in a spatially and temporally controlled manner. This study demonstrates the application of a bioorthogonal inverse electron-demand Diels-Alder (iEDDA) reaction to cleave trans-cyclooctene (TCO) and vinyl protecting groups from carboxylic acid-containing molecules. The tetrazine-mediated decaging reaction proceeded under biocompatible conditions with fast reaction kinetics (<2 min). The anti-inflammatory activity of ketoprofen was successfully reinstated after decaging of the nontoxic TCOprodrug in live macrophages. Overall, this work expands the scope of functional groups and the application of decaging reactions to a new class of drugs.
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Affiliation(s)
- Sarah Davies
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Luxi Qiao
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Bruno L Oliveira
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - Claudio D Navo
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de la Rioja, Madre de Dios, 53, 26006, Logroño, Spain
| | - Gonzalo Jiménez-Osés
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de la Rioja, Madre de Dios, 53, 26006, Logroño, Spain.,CIC bioGUNE, Building 801A, Bizkaia Technology Park, 48170, Derio, Spain
| | - Gonçalo J L Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
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10
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Davies S, Qiao L, Oliveira BL, Navo CD, Jiménez-Osés G, Bernardes GJL. Tetrazine-Triggered Release of Carboxylic-Acid-Containing Molecules for Activation of an Anti-inflammatory Drug. Chembiochem 2019; 20:1541-1546. [PMID: 30773780 DOI: 10.1002/cbic.201900098] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Indexed: 12/20/2022]
Abstract
In addition to its use for the study of biomolecules in living systems, bioorthogonal chemistry has emerged as a promising strategy to enable protein or drug activation in a spatially and temporally controlled manner. This study demonstrates the application of a bioorthogonal inverse electron-demand Diels-Alder (iEDDA) reaction to cleave trans-cyclooctene (TCO) and vinyl protecting groups from carboxylic acid-containing molecules. The tetrazine-mediated decaging reaction proceeded under biocompatible conditions with fast reaction kinetics (<2 min). The anti-inflammatory activity of ketoprofen was successfully reinstated after decaging of the nontoxic TCOprodrug in live macrophages. Overall, this work expands the scope of functional groups and the application of decaging reactions to a new class of drugs.
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Affiliation(s)
- Sarah Davies
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Luxi Qiao
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Bruno L Oliveira
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - Claudio D Navo
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de la Rioja, Madre de Dios, 53, 26006, Logroño, Spain
| | - Gonzalo Jiménez-Osés
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de la Rioja, Madre de Dios, 53, 26006, Logroño, Spain.,CIC bioGUNE, Building 801A, Bizkaia Technology Park, 48170, Derio, Spain
| | - Gonçalo J L Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
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11
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Alcock LJ, Oliveira BL, Deery MJ, Pukala TL, Perkins MV, Bernardes GJL, Chalker JM. Norbornene Probes for the Detection of Cysteine Sulfenic Acid in Cells. ACS Chem Biol 2019; 14:594-598. [PMID: 30893551 DOI: 10.1021/acschembio.8b01104] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Norbornene derivatives were validated as probes for cysteine sulfenic acid on proteins and in live cells. Trapping sulfenic acids with norbornene probes is highly selective and revealed a different reactivity profile than the traditional dimedone reagent. The norbornene probe also revealed a superior chemoselectivity when compared to a commonly used dimedone probe. Together, these results advance the study of cysteine oxidation in biological systems.
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Affiliation(s)
- Lisa J. Alcock
- Flinders University, College of Science and Engineering, Sturt Road, Bedford Park, South Australia 5042, Australia
- Flinders University, Institute for NanoScale Science and Technology, Sturt Road, Bedford Park, South Australia 5042, Australia
| | - Bruno L. Oliveira
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Michael J. Deery
- Cambridge Centre for Proteomics, Cambridge Systems Biology Centre, Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge CB2 1QW, United Kingdom
| | - Tara L. Pukala
- The University of Adelaide, School of Physical Sciences, Adelaide, South Australia 5005, Australia
| | - Michael V. Perkins
- Flinders University, College of Science and Engineering, Sturt Road, Bedford Park, South Australia 5042, Australia
| | - Gonçalo J. L. Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - Justin M. Chalker
- Flinders University, College of Science and Engineering, Sturt Road, Bedford Park, South Australia 5042, Australia
- Flinders University, Institute for NanoScale Science and Technology, Sturt Road, Bedford Park, South Australia 5042, Australia
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12
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Gil de Montes E, Jiménez-Moreno E, Oliveira BL, Navo CD, Cal PMSD, Jiménez-Osés G, Robina I, Moreno-Vargas AJ, Bernardes GJL. Azabicyclic vinyl sulfones for residue-specific dual protein labelling. Chem Sci 2019; 10:4515-4522. [PMID: 31057781 PMCID: PMC6482879 DOI: 10.1039/c9sc00125e] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 03/18/2019] [Indexed: 12/31/2022] Open
Abstract
We have developed [2.2.1]azabicyclic vinyl sulfone reagents that simultaneously enable cysteine-selective protein modification and introduce a handle for further bioorthogonal ligation.
We have developed [2.2.1]azabicyclic vinyl sulfone reagents that simultaneously enable cysteine-selective protein modification and introduce a handle for further bioorthogonal ligation. The reaction is fast and selective for cysteine relative to other amino acids that have nucleophilic side-chains, and the formed products are stable in human plasma and are moderately resistant to retro Diels–Alder degradation reactions. A model biotinylated [2.2.1]azabicyclic vinyl sulfone reagent was shown to efficiently label two cysteine-tagged proteins, ubiquitin and C2Am, under mild conditions (1–5 equiv. of reagent in NaPi pH 7.0, room temperature, 30 min). The resulting thioether-linked conjugates were stable and retained the native activity of the proteins. Finally, the dienophile present in the azabicyclic moiety on a functionalised C2Am protein could be fluorescently labelled through an inverse electron demand Diels–Alder reaction in cells to allow selective apoptosis imaging. The combined advantages of directness, site-specificity and easy preparation mean [2.2.1]azabicyclic vinyl sulfones can be used for residue-specific dual protein labelling/construction strategies with minimal perturbation of native function based simply on the attachment of an [2.2.1]azabicyclic moiety to cysteine.
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Affiliation(s)
- Enrique Gil de Montes
- Departamento de Química Orgánica , Facultad de Química , Universidad de Sevilla , C/Prof. García González, 1 , 41012-Sevilla , Spain .
| | - Ester Jiménez-Moreno
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW Cambridge , UK .
| | - Bruno L Oliveira
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW Cambridge , UK . .,Instituto de Medicina Molecular , Faculdade de Medicina da Universidade de Lisboa , Av. Prof. Egas Moniz , 1649-028 Lisboa , Portugal
| | - Claudio D Navo
- Departamento de Química , Centro de Investigación en Síntesis Química , Universidad de La Rioja , 26006 Logroño , Spain.,CIC bioGUNE , Bizkaia Technology Park, Building 801A , 48170 Derio , Spain
| | - Pedro M S D Cal
- Instituto de Medicina Molecular , Faculdade de Medicina da Universidade de Lisboa , Av. Prof. Egas Moniz , 1649-028 Lisboa , Portugal
| | - Gonzalo Jiménez-Osés
- Departamento de Química , Centro de Investigación en Síntesis Química , Universidad de La Rioja , 26006 Logroño , Spain.,CIC bioGUNE , Bizkaia Technology Park, Building 801A , 48170 Derio , Spain
| | - Inmaculada Robina
- Departamento de Química Orgánica , Facultad de Química , Universidad de Sevilla , C/Prof. García González, 1 , 41012-Sevilla , Spain .
| | - Antonio J Moreno-Vargas
- Departamento de Química Orgánica , Facultad de Química , Universidad de Sevilla , C/Prof. García González, 1 , 41012-Sevilla , Spain .
| | - Gonçalo J L Bernardes
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW Cambridge , UK . .,Instituto de Medicina Molecular , Faculdade de Medicina da Universidade de Lisboa , Av. Prof. Egas Moniz , 1649-028 Lisboa , Portugal
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13
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Nogueira BRF, Reis MP, Carvalho AC, Mendoza EAC, Oliveira BL, Silva VA, Bertechini AG. Performance, Growth Curves and Carcass Yield of Four Strains of Broiler Chicken. Braz J Poult Sci 2019. [DOI: 10.1590/1806-9061-2018-0866] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
| | - MP Reis
- São Paulo State University, Brazil
| | | | | | | | - VA Silva
- Federal University of Lavras, Brazil
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14
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Zwicker VE, Oliveira BL, Yeo JH, Fraser ST, Bernardes GJL, New EJ, Jolliffe KA. A Fluorogenic Probe for Cell Surface Phosphatidylserine Using an Intramolecular Indicator Displacement Sensing Mechanism. Angew Chem Int Ed Engl 2018; 58:3087-3091. [DOI: 10.1002/anie.201812489] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Indexed: 11/11/2022]
Affiliation(s)
| | - Bruno L. Oliveira
- University of Cambridge Department of Chemistry Lensfield Road CB2 1EW Cambridge UK
- Universidade de Lisboa Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Jia Hao Yeo
- University of Sydney School of Chemistry Sydney NSW 2006 Australia
- University of Sydney School of Medical Sciences Camperdown NSW 2050 Australia
| | - Stuart T. Fraser
- University of Sydney School of Medical Sciences Camperdown NSW 2050 Australia
| | - Gonçalo J. L. Bernardes
- University of Cambridge Department of Chemistry Lensfield Road CB2 1EW Cambridge UK
- Universidade de Lisboa Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Elizabeth J. New
- University of Sydney School of Chemistry Sydney NSW 2006 Australia
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15
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Zwicker VE, Oliveira BL, Yeo JH, Fraser ST, Bernardes GJL, New EJ, Jolliffe KA. A Fluorogenic Probe for Cell Surface Phosphatidylserine Using an Intramolecular Indicator Displacement Sensing Mechanism. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201812489] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | - Bruno L. Oliveira
- University of Cambridge Department of Chemistry Lensfield Road CB2 1EW Cambridge UK
- Universidade de Lisboa Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Jia Hao Yeo
- University of Sydney School of Chemistry Sydney NSW 2006 Australia
- University of Sydney School of Medical Sciences Camperdown NSW 2050 Australia
| | - Stuart T. Fraser
- University of Sydney School of Medical Sciences Camperdown NSW 2050 Australia
| | - Gonçalo J. L. Bernardes
- University of Cambridge Department of Chemistry Lensfield Road CB2 1EW Cambridge UK
- Universidade de Lisboa Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Elizabeth J. New
- University of Sydney School of Chemistry Sydney NSW 2006 Australia
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16
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Sun S, Oliveira BL, Jiménez‐Osés G, Bernardes GJL. Radical-Mediated Thiol-Ene Strategy: Photoactivation of Thiol-Containing Drugs in Cancer Cells. Angew Chem Int Ed Engl 2018; 57:15832-15835. [PMID: 30300959 PMCID: PMC6391964 DOI: 10.1002/anie.201811338] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Indexed: 12/28/2022]
Abstract
Photoactivated drugs provide an opportunity to improve efficacy alongside reducing side-effects in the treatment of severe diseases such as cancer. Described herein is a photoactivation decaging method of isobutylene-caged thiols through a UV-initiated thiol-ene reaction. The method was demonstrated with an isobutylene-caged cysteine, cyclic disulfide-peptide, and thiol-containing drug, all of which were rapidly and efficiently released under mild UV irradiation in the presence of thiol sources and a photoinitiator. Importantly, it is shown that the activity of histone deacetylase inhibitor largazole can be switched off when stapled, but selectively switched on within cancer cells when irradiated with non-phototoxic light.
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Affiliation(s)
- Shuang Sun
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
| | - Bruno L. Oliveira
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
| | - Gonzalo Jiménez‐Osés
- Departamento de Química.Centro de Investigación en Síntesis Química.Universidad de La Rioja26006LogroñoSpain
| | - Gonçalo J. L. Bernardes
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
- Instituto de Medicina MolecularFaculdade de MedicinaUniversidade de LisboaAvenida Professor Egas Moniz1649-028LisboaPortugal
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17
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Sun S, Oliveira BL, Jiménez-Osés G, Bernardes GJL. Radical-Mediated Thiol-Ene Strategy: Photoactivation of Thiol-Containing Drugs in Cancer Cells. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811338] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Shuang Sun
- Department of Chemistry; University of Cambridge; Lensfield Road CB2 1EW Cambridge UK
| | - Bruno L. Oliveira
- Department of Chemistry; University of Cambridge; Lensfield Road CB2 1EW Cambridge UK
| | - Gonzalo Jiménez-Osés
- Departamento de Química.; Centro de Investigación en Síntesis Química.; Universidad de La Rioja; 26006 Logroño Spain
| | - Gonçalo J. L. Bernardes
- Department of Chemistry; University of Cambridge; Lensfield Road CB2 1EW Cambridge UK
- Instituto de Medicina Molecular; Faculdade de Medicina; Universidade de Lisboa; Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
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18
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Ferreira VFC, Oliveira BL, Santos JD, Correia JDG, Farinha CM, Mendes F. Targeting of the Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Protein with a Technetium-99m Imaging Probe. ChemMedChem 2018; 13:1469-1478. [PMID: 29864241 DOI: 10.1002/cmdc.201800187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/18/2018] [Indexed: 12/28/2022]
Abstract
Cystic fibrosis (CF) is caused by mutations in the gene that encodes the CF transmembrane conductance regulator (CFTR) protein. The most common mutation, F508del, leads to almost total absence of CFTR at the plasma membrane, a defect potentially corrected via drug-based therapies. Herein, we report the first proof-of-principle study of a noninvasive imaging probe able to detect CFTR at the plasma membrane. We radiolabeled the CFTR inhibitor, CFTRinh -172a, with technetium-99m via a pyrazolyl-diamine chelating unit, yielding a novel 99m Tc(CO)3 complex. A non-radioactive surrogate showed that the structural modifications introduced in the inhibitor did not affect its activity. The radioactive complex was able to detect plasma membrane CFTR, shown by its significantly higher uptake in wild-type versus mutated cells. Furthermore, assessment of F508del CFTR pharmacological correction in human cells using the radioactive complex revealed differences in corrector versus control uptake, recapitulating the biochemical correction observed for the protein.
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Affiliation(s)
- Vera F C Ferreira
- C2TN-Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela LRS, Portugal
| | - Bruno L Oliveira
- C2TN-Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela LRS, Portugal
- Current address: Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK
| | - João D Santos
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, Universidade de Lisboa, Campo Grande C8, 1749-016, Lisboa, Portugal
| | - João D G Correia
- C2TN-Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela LRS, Portugal
| | - Carlos M Farinha
- BioISI-Biosystems and Integrative Sciences Institute, Faculty of Sciences, Universidade de Lisboa, Campo Grande C8, 1749-016, Lisboa, Portugal
| | - Filipa Mendes
- C2TN-Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela LRS, Portugal
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19
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Stenton BJ, Oliveira BL, Matos MJ, Sinatra L, Bernardes GJL. A thioether-directed palladium-cleavable linker for targeted bioorthogonal drug decaging. Chem Sci 2018; 9:4185-4189. [PMID: 29780549 PMCID: PMC5941270 DOI: 10.1039/c8sc00256h] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 04/02/2018] [Indexed: 01/24/2023] Open
Abstract
We describe the development of a bifunctional linker that simultaneously allows site-specific protein modification and palladium-mediated bioorthogonal decaging.
We describe the development of a bifunctional linker that simultaneously allows site-specific protein modification and palladium-mediated bioorthogonal decaging. This was enabled by a thioether binding motif in the propargyl carbamate linker and a readily available palladium complex. We demonstrate the efficiency of this reaction by controlled drug release from a PEGylated doxorubicin prodrug in cancer cells. The linker can be easily installed into cysteine bearing proteins which we demonstrated for the construction of an anti-HER2 nanobody–drug conjugate. Targeted delivery of the nanobody drug conjugate showed effective cell killing in HER2+ cells upon palladium-mediated decaging.
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Affiliation(s)
- Benjamin J Stenton
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW Cambridge , UK .
| | - Bruno L Oliveira
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW Cambridge , UK .
| | - Maria J Matos
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW Cambridge , UK .
| | - Laura Sinatra
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW Cambridge , UK .
| | - Gonçalo J L Bernardes
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW Cambridge , UK . .,Instituto de Medicina Molecular , Faculdade de Medicina da Universidade de Lisboa , Av. Prof. Egas Moniz , 1649-028 Lisboa , Portugal .
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20
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Abstract
The emerging inverse electron demand Diels-Alder (IEDDA) reaction stands out from other bioorthogonal reactions by virtue of its unmatchable kinetics, excellent orthogonality and biocompatibility. With the recent discovery of novel dienophiles and optimal tetrazine coupling partners, attention has now been turned to the use of IEDDA approaches in basic biology, imaging and therapeutics. Here we review this bioorthogonal reaction and its promising applications for live cell and animal studies. We first discuss the key factors that contribute to the fast IEDDA kinetics and describe the most recent advances in the synthesis of tetrazine and dienophile coupling partners. Both coupling partners have been incorporated into proteins for tracking and imaging by use of fluorogenic tetrazines that become strongly fluorescent upon reaction. Selected notable examples of such applications are presented. The exceptional fast kinetics of this catalyst-free reaction, even using low concentrations of coupling partners, make it amenable for in vivo radiolabelling using pretargeting methodologies, which are also discussed. Finally, IEDDA reactions have recently found use in bioorthogonal decaging to activate proteins or drugs in gain-of-function strategies. We conclude by showing applications of the IEDDA reaction in the construction of biomaterials that are used for drug delivery and multimodal imaging, among others. The use and utility of the IEDDA reaction is interdisciplinary and promises to revolutionize chemical biology, radiochemistry and materials science.
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Affiliation(s)
- B L Oliveira
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
| | - Z Guo
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
| | - G J L Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK. and Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, Lisboa, 1649-028, Portugal.
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21
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Oliveira BL, Souza RM, Silva Filho JP, Gomes LC, Fernandes LFL. Hematological and biochemical characteristics during the transport of dog snapper Lutjanus jocu (Perciformes: Lutjanidae). Neotrop ichthyol 2018. [DOI: 10.1590/1982-0224-20170140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
ABSTRACT The objective of this study was to evaluate stress responses in dog snapper (Lutjanus jocu) during transport by evaluating their hematological and biochemical responses. Twenty-five wild dog snapper specimens were used in the experiment (220 ± 68 g and 24.5 ± 2.5 cm total length). Blood samples were collected prior to transport (control), and fish were placed in two transport boxes, one with anesthetic and one without anesthetic. Immediately after transport and after 24 h, blood was collected from the fish that underwent each treatment (with anesthetic and without anesthetic). Biochemical and hematological results demonstrated the inefficiency of benzocaine as a stress reliever during handling and transport. Biochemical parameters revealed the effects of stress during transport, and after 24 h, glucose levels and hematological parameters (hemoglobin, erythrocytes, leukocytes, neutrophils and MCH) showed a tendency to return to control levels. This study is the first to report stress response measurements of hematological and biochemical indicators in dog snapper, representing an important basis for the planning of future experiments involving the transport and handling of this fish species.
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22
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Matos MJ, Oliveira BL, Martínez-Sáez N, Guerreiro A, Cal PMSD, Bertoldo J, Maneiro M, Perkins E, Howard J, Deery MJ, Chalker JM, Corzana F, Jiménez-Osés G, Bernardes GJL. Chemo- and Regioselective Lysine Modification on Native Proteins. J Am Chem Soc 2018; 140:4004-4017. [PMID: 29473744 PMCID: PMC5880509 DOI: 10.1021/jacs.7b12874] [Citation(s) in RCA: 202] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
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Site-selective chemical
conjugation of synthetic molecules to proteins
expands their functional and therapeutic capacity. Current protein
modification methods, based on synthetic and biochemical technologies,
can achieve site selectivity, but these techniques often require extensive
sequence engineering or are restricted to the N-
or C-terminus. Here we show the computer-assisted
design of sulfonyl acrylate reagents for the modification of a single lysine residue on native protein sequences. This
feature of the designed sulfonyl acrylates, together with the innate
and subtle reactivity differences conferred by the unique local microenvironment
surrounding each lysine, contribute to the observed regioselectivity
of the reaction. Moreover, this site selectivity was predicted computationally,
where the lysine with the lowest pKa was
the kinetically favored residue at slightly basic pH. Chemoselectivity
was also observed as the reagent reacted preferentially at lysine,
even in those cases when other nucleophilic residues such as cysteine
were present. The reaction is fast and proceeds using a single molar
equivalent of the sulfonyl acrylate reagent under biocompatible conditions
(37 °C, pH 8.0). This technology was demonstrated by the quantitative
and irreversible modification of five different proteins including
the clinically used therapeutic antibody Trastuzumab without prior
sequence engineering. Importantly, their native secondary structure
and functionality is retained after the modification. This regioselective
lysine modification method allows for further bioconjugation through
aza-Michael addition to the acrylate electrophile that is generated
by spontaneous elimination of methanesulfinic acid upon lysine labeling.
We showed that a protein–antibody conjugate bearing a site-specifically
installed fluorophore at lysine could be used for selective imaging
of apoptotic cells and detection of Her2+ cells, respectively. This
simple, robust method does not require genetic engineering and may
be generally used for accessing diverse, well-defined protein conjugates
for basic biology and therapeutic studies.
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Affiliation(s)
- Maria J Matos
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , U.K
| | - Bruno L Oliveira
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , U.K
| | - Nuria Martínez-Sáez
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , U.K
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa , Avenida Professor Egas Moniz , Lisboa , Portugal
| | - Pedro M S D Cal
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa , Avenida Professor Egas Moniz , Lisboa , Portugal
| | - Jean Bertoldo
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , U.K
| | - María Maneiro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica , Universidade de Santiago de Compostela , calle Jenaro de la Fuente s/n , Santiago de Compostela , Spain
| | - Elizabeth Perkins
- Albumedix Ltd, Castle Court, 59 Castle Boulevard , Nottingham , United Kingdom
| | - Julie Howard
- Cambridge Centre for Proteomics, Cambridge Systems Biology Centre, Department of Biochemistry , University of Cambridge , Tennis Court Road , Cambridge , U.K
| | - Michael J Deery
- Cambridge Centre for Proteomics, Cambridge Systems Biology Centre, Department of Biochemistry , University of Cambridge , Tennis Court Road , Cambridge , U.K
| | - Justin M Chalker
- Centre for NanoScale Science and Technology, College of Science and Engineering , Flinders University Bedford Park , South Australia , Australia
| | - Francisco Corzana
- Departamento de Química , Universidad de La Rioja , Centro de Investigación en Síntesis Química , Logroño , Spain
| | - Gonzalo Jiménez-Osés
- Departamento de Química , Universidad de La Rioja , Centro de Investigación en Síntesis Química , Logroño , Spain
| | - Gonçalo J L Bernardes
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , U.K.,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa , Avenida Professor Egas Moniz , Lisboa , Portugal
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23
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Abstract
The development of new methods to image the onset and progression of thrombosis is an unmet need. Non-invasive molecular imaging techniques targeting specific key structures involved in the formation of thrombosis have demonstrated the ability to detect thrombus in different disease state models and in patients. Due to its high concentration in the thrombus and its essential role in thrombus formation, the detection of fibrin is an attractive strategy for identification of thrombosis. Herein we provide an overview of recent and selected fibrin-targeted probes for molecular imaging of thrombosis by magnetic resonance imaging (MRI), positron emission tomography (PET), single photon emission computed tomography (SPECT), and optical techniques. Emphasis is placed on work that our lab has explored over the last 15 years that has resulted in the progression of the fibrin-binding PET probe [64Cu]FBP8 from preclinical studies into human trials.
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Affiliation(s)
- Bruno L Oliveira
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
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24
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Morais M, Ferreira VFC, Figueira F, Mendes F, Raposinho P, Santos I, Oliveira BL, Correia JDG. Technetium-99m complexes of l-arginine derivatives for targeting amino acid transporters. Dalton Trans 2017; 46:14537-14547. [PMID: 28612866 DOI: 10.1039/c7dt01146f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Although relevant from the clinical point of view, radiotracers targeting cationic amino acid transporters are relatively unexplored and, in particular, no metal-based radiotracers are known. The rare examples of complexes recognized by amino acid transporters, namely by the Na+-independent neutral l-type amino acid transporter 1 (LAT1), are 99mTc(i)/Re(i) compounds. Herein, we describe conjugates comprising a pyrazolyl-diamine chelating unit and the cationic amino acid l-arginine (l-Arg) linked by a propyl (L1) or hexyl linker (L2), which allowed the preparation of stable complexes of the type fac-[99mTc(CO)3(k3-L)]+ (Tc1, L = L1; Tc2, L = L2) and of the respective surrogates Re1 and Re2. Interestingly, complex Tc2 exhibited moderate levels of time-dependent internalization in three human tumoural cell lines, with approximately 3% of total applied activity internalized, corresponding to 21% of the cell-associated activity. A putative mechanism of retention in the cytoplasm of cells could be the interaction of the complex with inducible nitric oxide synthase (iNOS), which is the enzyme responsible for the catalytic oxidation of l-Arg to citrulline and nitric oxide. However, the surrogate complex Re2 does not recognize iNOS, as demonstrated by the in vitro assays with purified iNOS and in studies with lipopolysaccharide(LPS)-activated macrophages. Preliminary mechanistic studies suggest that the internalization of Tc2 is linked to the cationic amino acid transporters, namely system y+. This finding might open the way towards the development of novel families of metal-based radiotracers for probing metabolically active cancer cells.
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Affiliation(s)
- Maurício Morais
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139.7), 2695-066 Bobadela LRS, Portugal.
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25
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Jiménez-Moreno E, Guo Z, Oliveira BL, Albuquerque IS, Kitowski A, Guerreiro A, Boutureira O, Rodrigues T, Jiménez-Osés G, Bernardes GJL. Vinyl Ether/Tetrazine Pair for the Traceless Release of Alcohols in Cells. Angew Chem Int Ed Engl 2016; 56:243-247. [PMID: 27930843 PMCID: PMC6485351 DOI: 10.1002/anie.201609607] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/08/2016] [Indexed: 11/24/2022]
Abstract
The cleavage of a protecting group from a protein or drug under bioorthogonal conditions enables accurate spatiotemporal control over protein or drug activity. Disclosed herein is that vinyl ethers serve as protecting groups for alcohol‐containing molecules and as reagents for bioorthogonal bond‐cleavage reactions. A vinyl ether moiety was installed in a range of molecules, including amino acids, a monosaccharide, a fluorophore, and an analogue of the cytotoxic drug duocarmycin. Tetrazine‐mediated decaging proceeded under biocompatible conditions with good yields and reasonable kinetics. Importantly, the nontoxic, vinyl ether duocarmycin double prodrug was successfully decaged in live cells to reinstate cytotoxicity. This bioorthogonal reaction presents broad applicability and may be suitable for in vivo applications.
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Affiliation(s)
- Ester Jiménez-Moreno
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Zijian Guo
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Bruno L Oliveira
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Inês S Albuquerque
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - Annabel Kitowski
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - Omar Boutureira
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK
| | - Tiago Rodrigues
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
| | - Gonzalo Jiménez-Osés
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006, Logroño, Spain.,Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, BIFI-IQFR (CSIC), Zaragoza, Spain
| | - Gonçalo J L Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028, Lisboa, Portugal
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26
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Jiménez‐Moreno E, Guo Z, Oliveira BL, Albuquerque IS, Kitowski A, Guerreiro A, Boutureira O, Rodrigues T, Jiménez‐Osés G, Bernardes GJL. Vinyl Ether/Tetrazine Pair for the Traceless Release of Alcohols in Cells. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609607] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ester Jiménez‐Moreno
- Department of Chemistry University of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Zijian Guo
- Department of Chemistry University of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Bruno L. Oliveira
- Department of Chemistry University of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Inês S. Albuquerque
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Annabel Kitowski
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Ana Guerreiro
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Omar Boutureira
- Department of Chemistry University of Cambridge Lensfield Road CB2 1EW Cambridge UK
| | - Tiago Rodrigues
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Gonzalo Jiménez‐Osés
- Departamento de Química Universidad de La Rioja, Centro de Investigación en Síntesis Química 26006 Logroño Spain
- Institute of Biocomputation and Physics of Complex Systems (BIFI) University of Zaragoza, BIFI-IQFR (CSIC) Zaragoza Spain
| | - Gonçalo J. L. Bernardes
- Department of Chemistry University of Cambridge Lensfield Road CB2 1EW Cambridge UK
- Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
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27
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Oliveira BL, Guo Z, Boutureira O, Guerreiro A, Jiménez‐Osés G, Bernardes GJL. A Minimal, Unstrained S-Allyl Handle for Pre-Targeting Diels-Alder Bioorthogonal Labeling in Live Cells. Angew Chem Int Ed Engl 2016; 55:14683-14687. [PMID: 27763724 PMCID: PMC5132151 DOI: 10.1002/anie.201608438] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 09/27/2016] [Indexed: 11/12/2022]
Abstract
The unstrained S-allyl cysteine amino acid was site-specifically installed on apoptosis protein biomarkers and was further used as a chemical handle and ligation partner for 1,2,4,5-tetrazines by means of an inverse-electron-demand Diels-Alder reaction. We demonstrate the utility of this minimal handle for the efficient labeling of apoptotic cells using a fluorogenic tetrazine dye in a pre-targeting approach. The small size, easy chemical installation, and selective reactivity of the S-allyl handle towards tetrazines should be readily extendable to other proteins and biomolecules, which could facilitate their labeling within live cells.
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Affiliation(s)
- Bruno L. Oliveira
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
| | - Zijian Guo
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
| | - Omar Boutureira
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
| | - Ana Guerreiro
- Instituto de Medicina MolecularFaculdade de MedicinaUniversidade de LisboaAvenida Professor Egas Moniz1649-028LisboaPortugal
| | - Gonzalo Jiménez‐Osés
- Departamento de QuímicaUniversidad de La RiojaCentro de Investigación en Síntesis Química26006LogroñoSpain
- Institute of Biocomputation and Physics of Complex Systems (BIFI)University of ZaragozaBIFI-IQFR (CSIC)ZaragozaSpain
| | - Gonçalo J. L. Bernardes
- Department of ChemistryUniversity of CambridgeLensfield RoadCB2 1EWCambridgeUK
- Instituto de Medicina MolecularFaculdade de MedicinaUniversidade de LisboaAvenida Professor Egas Moniz1649-028LisboaPortugal
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28
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Oliveira BL, Guo Z, Boutureira O, Guerreiro A, Jiménez-Osés G, Bernardes GJL. A Minimal, Unstrained S-Allyl Handle for Pre-Targeting Diels-Alder Bioorthogonal Labeling in Live Cells. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608438] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Bruno L. Oliveira
- Department of Chemistry; University of Cambridge; Lensfield Road CB2 1EW Cambridge UK
| | - Zijian Guo
- Department of Chemistry; University of Cambridge; Lensfield Road CB2 1EW Cambridge UK
| | - Omar Boutureira
- Department of Chemistry; University of Cambridge; Lensfield Road CB2 1EW Cambridge UK
| | - Ana Guerreiro
- Instituto de Medicina Molecular; Faculdade de Medicina; Universidade de Lisboa; Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
| | - Gonzalo Jiménez-Osés
- Departamento de Química; Universidad de La Rioja; Centro de Investigación en Síntesis Química; 26006 Logroño Spain
- Institute of Biocomputation and Physics of Complex Systems (BIFI); University of Zaragoza; BIFI-IQFR (CSIC) Zaragoza Spain
| | - Gonçalo J. L. Bernardes
- Department of Chemistry; University of Cambridge; Lensfield Road CB2 1EW Cambridge UK
- Instituto de Medicina Molecular; Faculdade de Medicina; Universidade de Lisboa; Avenida Professor Egas Moniz 1649-028 Lisboa Portugal
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29
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Blasi F, Oliveira BL, Rietz TA, Rotile NJ, Naha PC, Cormode DP, Izquierdo-Garcia D, Catana C, Caravan P. Multisite Thrombus Imaging and Fibrin Content Estimation With a Single Whole-Body PET Scan in Rats. Arterioscler Thromb Vasc Biol 2015; 35:2114-21. [PMID: 26272938 DOI: 10.1161/atvbaha.115.306055] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 07/22/2015] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Thrombosis is a leading cause of morbidity and mortality worldwide. Current diagnostic strategies rely on imaging modalities that are specific for distinct vascular territories, but a thrombus-specific whole-body imaging approach is still missing. Moreover, imaging techniques to assess thrombus composition are underdeveloped, although therapeutic strategies may benefit from such technology. Therefore, our goal was to test whether positron emission tomography (PET) with the fibrin-binding probe (64)Cu-FBP8 allows multisite thrombus detection and fibrin content estimation. APPROACH AND RESULTS Thrombosis was induced in Sprague-Dawley rats (n=32) by ferric chloride application on both carotid artery and femoral vein. (64)Cu-FBP8-PET/CT imaging was performed 1, 3, or 7 days after thrombosis to detect thrombus location and to evaluate age-dependent changes in target uptake. Ex vivo biodistribution, autoradiography, and histopathology were performed to validate imaging results. Arterial and venous thrombi were localized on fused PET/CT images with high accuracy (97.6%; 95% confidence interval, 92-100). A single whole-body PET/MR imaging session was sufficient to reveal the location of both arterial and venous thrombi after (64)Cu-FBP8 administration. PET imaging showed that probe uptake was greater in younger clots than in older ones for both arterial and venous thrombosis (P<0.0001). Quantitative histopathology revealed an age-dependent reduction of thrombus fibrin content (P<0.001), consistent with PET results. Biodistribution and autoradiography further confirmed the imaging findings. CONCLUSIONS We demonstrated that (64)Cu-FBP8-PET is a feasible approach for whole-body thrombus detection and that molecular imaging of fibrin can provide, noninvasively, insight into clot composition.
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Affiliation(s)
- Francesco Blasi
- From the Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown (F.B., B.L.O., T.A.R., N.J.R., D.I.-G., C.C., P.C.); Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia (P.C.N., D.P.C.); and Institute for Innovation in Imaging, Massachusetts General Hospital, Boston (P.C.)
| | - Bruno L Oliveira
- From the Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown (F.B., B.L.O., T.A.R., N.J.R., D.I.-G., C.C., P.C.); Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia (P.C.N., D.P.C.); and Institute for Innovation in Imaging, Massachusetts General Hospital, Boston (P.C.)
| | - Tyson A Rietz
- From the Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown (F.B., B.L.O., T.A.R., N.J.R., D.I.-G., C.C., P.C.); Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia (P.C.N., D.P.C.); and Institute for Innovation in Imaging, Massachusetts General Hospital, Boston (P.C.)
| | - Nicholas J Rotile
- From the Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown (F.B., B.L.O., T.A.R., N.J.R., D.I.-G., C.C., P.C.); Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia (P.C.N., D.P.C.); and Institute for Innovation in Imaging, Massachusetts General Hospital, Boston (P.C.)
| | - Pratap C Naha
- From the Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown (F.B., B.L.O., T.A.R., N.J.R., D.I.-G., C.C., P.C.); Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia (P.C.N., D.P.C.); and Institute for Innovation in Imaging, Massachusetts General Hospital, Boston (P.C.)
| | - David P Cormode
- From the Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown (F.B., B.L.O., T.A.R., N.J.R., D.I.-G., C.C., P.C.); Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia (P.C.N., D.P.C.); and Institute for Innovation in Imaging, Massachusetts General Hospital, Boston (P.C.)
| | - David Izquierdo-Garcia
- From the Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown (F.B., B.L.O., T.A.R., N.J.R., D.I.-G., C.C., P.C.); Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia (P.C.N., D.P.C.); and Institute for Innovation in Imaging, Massachusetts General Hospital, Boston (P.C.)
| | - Ciprian Catana
- From the Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown (F.B., B.L.O., T.A.R., N.J.R., D.I.-G., C.C., P.C.); Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia (P.C.N., D.P.C.); and Institute for Innovation in Imaging, Massachusetts General Hospital, Boston (P.C.)
| | - Peter Caravan
- From the Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown (F.B., B.L.O., T.A.R., N.J.R., D.I.-G., C.C., P.C.); Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia (P.C.N., D.P.C.); and Institute for Innovation in Imaging, Massachusetts General Hospital, Boston (P.C.).
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30
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Oliveira BL, Blasi F, Rietz TA, Rotile NJ, Day H, Caravan P. Multimodal Molecular Imaging Reveals High Target Uptake and Specificity of 111In- and 68Ga-Labeled Fibrin-Binding Probes for Thrombus Detection in Rats. J Nucl Med 2015; 56:1587-92. [PMID: 26251420 DOI: 10.2967/jnumed.115.160754] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 07/20/2015] [Indexed: 01/19/2023] Open
Abstract
UNLABELLED We recently showed the high target specificity and favorable imaging properties of 64Cu and Al18F PET probes for noninvasive imaging of thrombosis. Here, our aim was to evaluate new derivatives labeled with either with 68Ga, 111In, or 99mTc as thrombus imaging agents for PET and SPECT. In this study, the feasibility and potential of these probes for thrombus imaging was assessed in detail in 2 animal models of arterial thrombosis. The specificity of the probes was further evaluated using a triple-isotope approach with multimodal SPECT/PET/CT imaging. METHODS Radiotracers were synthesized using a known fibrin-binding peptide conjugated to 1,4,7-triazacyclononane,1-glutaric acid-4,7-acetic acid (NODAGA), 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid monoamide (DOTA-MA), or a diethylenetriamine ligand (DETA-propanoic acid [PA]), followed by labeling with 68Ga (FBP14, 68Ga-NODAGA), 111In (FBP15, 111In-DOTA-MA), or 99mTc (FBP16, 99mTc(CO)3-DETA-PA), respectively. PET or SPECT imaging, biodistribution, pharmacokinetics, and metabolic stability were evaluated in rat models of mural and occlusive carotid artery thrombosis. In vivo target specificity was evaluated by comparing the distribution of the SPECT and PET probes with preformed 125I-labeled thrombi and with a nonbinding control probe using SPECT/PET/CT imaging. RESULTS All 3 radiotracers showed affinity similar to soluble fibrin fragment DD(E) (inhibition constant=0.53-0.83 μM). After the kidneys, the highest uptake of 68Ga-FBP14 and 111In-FBP15 was in the thrombus (1.0±0.2 percentage injected dose per gram), with low off-target accumulation. Both radiotracers underwent fast systemic elimination (half-life, 8-15 min) through the kidneys, which led to highly conspicuous thrombi on PET and SPECT images. 99mTc-FBP16 displayed low target uptake and distribution consistent with aggregation or degradation. Triple-isotope imaging experiments showed that both 68Ga-FBP14 and 111In-FBP15, but not the nonbinding derivative 64Cu-D-Cys-FBP8, detected the location of the 125I-labeled thrombus, confirming high target specificity. CONCLUSION 68Ga-FBP14 and 111In-FBP15 have high fibrin affinity and thrombus specificity and represent useful PET and SPECT probes for thrombus detection.
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Affiliation(s)
- Bruno L Oliveira
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Harvard Medical School, Massachusetts General Hospital, Charlestown, Massachusetts; and
| | - Francesco Blasi
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Harvard Medical School, Massachusetts General Hospital, Charlestown, Massachusetts; and
| | - Tyson A Rietz
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Harvard Medical School, Massachusetts General Hospital, Charlestown, Massachusetts; and
| | - Nicholas J Rotile
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Harvard Medical School, Massachusetts General Hospital, Charlestown, Massachusetts; and
| | - Helen Day
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Harvard Medical School, Massachusetts General Hospital, Charlestown, Massachusetts; and
| | - Peter Caravan
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Harvard Medical School, Massachusetts General Hospital, Charlestown, Massachusetts; and Institute for Innovation in Imaging, Massachusetts General Hospital, Boston, Massachusetts
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31
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Blasi F, Oliveira BL, Rietz TA, Rotile NJ, Day H, Naha PC, Cormode DP, Izquierdo-Garcia D, Catana C, Caravan P. Radiation Dosimetry of the Fibrin-Binding Probe ⁶⁴Cu-FBP8 and Its Feasibility for PET Imaging of Deep Vein Thrombosis and Pulmonary Embolism in Rats. J Nucl Med 2015; 56:1088-93. [PMID: 25977464 DOI: 10.2967/jnumed.115.157982] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 04/27/2015] [Indexed: 01/07/2023] Open
Abstract
UNLABELLED The diagnosis of deep venous thromboembolic disease is still challenging despite the progress of current thrombus imaging modalities and new diagnostic algorithms. We recently reported the high target uptake and thrombus imaging efficacy of the novel fibrin-specific PET probe (64)Cu-FBP8. Here, we tested the feasibility of (64)Cu-FBP8 PET to detect source thrombi and culprit emboli after deep vein thrombosis and pulmonary embolism (DVT-PE). To support clinical translation of (64)Cu-FBP8, we performed a human dosimetry estimation using time-dependent biodistribution in rats. METHODS Sprague-Dawley rats (n = 7) underwent ferric chloride application on the femoral vein to trigger thrombosis. Pulmonary embolism was induced 30 min or 2 d after DVT by intrajugular injection of a preformed blood clot labeled with (125)I-fibrinogen. PET imaging was performed to detect the clots, and SPECT was used to confirm in vivo the location of the pulmonary emboli. Ex vivo γ counting and histopathology were used to validate the imaging findings. Detailed biodistribution was performed in healthy rats (n = 30) at different time points after (64)Cu-FBP8 administration to estimate human radiation dosimetry. Longitudinal whole-body PET/MR imaging (n = 2) was performed after (64)Cu-FBP8 administration to further assess radioactivity clearance. RESULTS (64)Cu-FBP8 PET imaging detected the location of lung emboli and venous thrombi after DVT-PE, revealing significant differences in uptake between target and background tissues (P < 0.001). In vivo SPECT imaging and ex vivo γ counting confirmed the location of the lung emboli. PET quantification of the venous thrombi revealed that probe uptake was greater in younger clots than in older ones, a result confirmed by ex vivo analyses (P < 0.001). Histopathology revealed an age-dependent reduction of thrombus fibrin content (P = 0.006), further supporting the imaging findings. Biodistribution and whole-body PET/MR imaging showed a rapid, primarily renal, body clearance of (64)Cu-FBP8. The effective dose was 0.021 mSv/MBq for males and 0.027 mSv/MBq for females, supporting the feasibility of using (64)Cu-FBP8 in human trials. CONCLUSION We showed that (64)Cu-FBP8 PET is a feasible approach to image DVT-PE and that radiogenic adverse health effects should not limit the clinical translation of (64)Cu-FBP8.
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Affiliation(s)
- Francesco Blasi
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Bruno L Oliveira
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Tyson A Rietz
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Nicholas J Rotile
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Helen Day
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Pratap C Naha
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania; and
| | - David P Cormode
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania; and
| | - David Izquierdo-Garcia
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Ciprian Catana
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts
| | - Peter Caravan
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts Institute for Innovation in Imaging, Massachusetts General Hospital, Boston, Massachusetts
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Oliveira BL, Morais M, Mendes F, Moreira IS, Cordeiro C, Fernandes PA, Ramos MJ, Alberto R, Santos I, Correia JDG. Re(I) and Tc(I) complexes for targeting nitric oxide synthase: influence of the chelator in the affinity for the enzyme. Chem Biol Drug Des 2015; 86:1072-86. [PMID: 25894011 DOI: 10.1111/cbdd.12575] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 03/26/2015] [Accepted: 04/12/2015] [Indexed: 12/31/2022]
Abstract
Aiming to design (99m) Tc complexes for probing nitric oxide synthase (NOS) by SPECT, we synthesized conjugates (L4-L6) comprising a NOS-recognizing moiety connected to a diamino-propionic acid (dap) chelating unit. The conjugates led to complexes of the type fac-[M(CO)3 (ĸ(3) -L)] (M = Re/(99m) Tc; Re4/Tc4: L = L4; Re5/Tc5: L = L5; Re6/Tc6: L = L6). Enzymatic studies showed that L4 and L5, but not L6, gave complexes (Re4 and Re5) that are less potent than the conjugates. To rationalize these results, we performed docking and molecular dynamics simulations. The high affinity of L4 and L5 is due to the strong interactions between the dap chelator and polar residues of the binding cavity. These interactions are hampered by metallation resulting in complexes with lower affinity. The higher potency of Re5 compared to Re4 was assigned to the increased bulkiness of Re5 and the presence of additional anchoring groups that better fit the active site and provide more extensive contacts. In turn, Re6 is too bulky and its organometallic tail is oriented toward the peripheral pocket of iNOS, leading to loss of contacts and a lower affinity. These results were compared with our previous results obtained with analogue complexes stabilized by a pyrazolyl-diamine chelating unit.
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Affiliation(s)
- Bruno L Oliveira
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (ao km 139,7), Bobadela LRS, 2695-066, Portugal
| | - Maurício Morais
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (ao km 139,7), Bobadela LRS, 2695-066, Portugal
| | - Filipa Mendes
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (ao km 139,7), Bobadela LRS, 2695-066, Portugal
| | - Irina S Moreira
- Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, REQUIMTE, Rua do Campo Alegre, Porto, 4169-007, Portugal
| | - Carlos Cordeiro
- Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Lisboa, 1749-016, Portugal
| | - Pedro A Fernandes
- Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, REQUIMTE, Rua do Campo Alegre, Porto, 4169-007, Portugal
| | - Maria J Ramos
- Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, REQUIMTE, Rua do Campo Alegre, Porto, 4169-007, Portugal
| | - Roger Alberto
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, Zurich, CH-8057, Switzerland
| | - Isabel Santos
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (ao km 139,7), Bobadela LRS, 2695-066, Portugal
| | - João D G Correia
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (ao km 139,7), Bobadela LRS, 2695-066, Portugal
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Amgarten B, Rajan R, Martínez-Sáez N, Oliveira BL, Albuquerque IS, Brooks RA, Reid DG, Duer MJ, Bernardes GJL. Collagen labelling with an azide-proline chemical reporter in live cells. Chem Commun (Camb) 2015; 51:5250-2. [DOI: 10.1039/c4cc07974d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biosynthetic incorporation of an azide-proline chemical reporter into collagen allows selective imaging in live foetal ovine osteoblasts using a strain-promoted [3+2] azide–alkyne cycloaddition reaction.
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Affiliation(s)
| | - Rakesh Rajan
- Division of Trauma & Orthopaedic Surgery
- University of Cambridge
- Addenbrooke's Hospital
- Cambridge CB2 0QQ
- UK
| | | | - Bruno L. Oliveira
- Athinoula A. Martinos Center for Biomedical Imaging
- Department of Radiology
- Massachusetts General Hospital
- Harvard Medical School
- Charlestown
| | - Inês S. Albuquerque
- Instituto de Medicina Molecular
- Faculdade de Medicina da Universidade de Lisboa
- Av. Prof. Egas Moniz
- 1649-028 Lisboa
- Portugal
| | - Roger A. Brooks
- Division of Trauma & Orthopaedic Surgery
- University of Cambridge
- Addenbrooke's Hospital
- Cambridge CB2 0QQ
- UK
| | - David G. Reid
- Department of Chemistry
- University of Cambridge
- CB2 1EW Cambridge
- UK
| | - Melinda J. Duer
- Department of Chemistry
- University of Cambridge
- CB2 1EW Cambridge
- UK
| | - Gonçalo J. L. Bernardes
- Department of Chemistry
- University of Cambridge
- CB2 1EW Cambridge
- UK
- Instituto de Medicina Molecular
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Oliveira BL, Fernandes LFL, Bianchini A, Chippari-Gomes AR, Silva BF, Brandão GP, Gomes LC. Acute copper toxicity in juvenile fat snook Centropomus parallelus (Teleostei: Centropomidae) in sea water. Neotrop ichthyol 2014. [DOI: 10.1590/1982-0224-20140040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Three experiments were designed to assess the accumulation and acute toxicity of copper (Cu) in juvenile fat snook Centropomusparallelus. The first experiment was performed to determine the 96-h lethal concentration (LC50) of Cu. The second experiment was designed to assess the effects of sublethal concentrations of Cu (0.47 and 0.94 mg/L), while the third one allowed us to test the recovery capacity of fish exposed to the sublethal concentrations Cu and kept in sea water without Cu addition. The LC50value for Cu was found to be 1.88 mg/L Cu. Fish exposed to the sublethal concentrations of Cu showed a significant accumulation of Cu in gills at 96 h respect to the control ones (0.43 µg/g Cu). No significant difference was observed in the accumulation of Cu in gills between fish exposed to 0.47 mg/L (1.09 µg/g Cu) and 0.94 mg/L (1.26 µg/g Cu). Exposure (24 and 96 h) to the sublethal concentrations of Cu tested induced DNA damage in the erythrocytes. The results show that acute exposure to sublethal concentrations induces Cu accumulation and DNA damage in fish, these effects being recovered after 240 h in sea water without Cu addition.
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Blasi F, Oliveira BL, Rietz TA, Rotile NJ, Day H, Looby RJ, Ay I, Caravan P. Effect of Chelate Type and Radioisotope on the Imaging Efficacy of 4 Fibrin-Specific PET Probes. J Nucl Med 2014; 55:1157-63. [PMID: 24790217 DOI: 10.2967/jnumed.113.136275] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 03/14/2014] [Indexed: 12/17/2022] Open
Abstract
UNLABELLED Thrombus formation plays a major role in cardiovascular diseases, but noninvasive thrombus imaging is still challenging. Fibrin is a major component of both arterial and venous thrombi and represents an ideal candidate for imaging of thrombosis. Recently, we showed that (64)Cu-DOTA-labeled PET probes based on fibrin-specific peptides are suitable for thrombus imaging in vivo; however, the metabolic stability of these probes was limited. Here, we describe 4 new probes using either (64)Cu or aluminum fluoride (Al(18)F) chelated to 2 NOTA derivatives. METHODS Probes were synthesized using a known fibrin-specific peptide conjugated to either NODAGA (FBP8, FBP10) or NOTA-monoamide (FBP9, FBP11) as chelators, followed by labeling with (64)Cu (FBP8 and FBP9) or Al(18)F (FBP10 and FBP11). PET imaging efficacy, pharmacokinetics, biodistribution, and metabolic stability were assessed in a rat model of arterial thrombosis. RESULTS All probes had similar nanomolar affinity (435-760 nM) for the soluble fibrin fragment DD(E). PET imaging allowed clear visualization of thrombus by all probes, with a 5-fold or higher thrombus-to-background ratio. Compared with the previous DOTA derivative, the new (64)Cu probes FBP8 and FBP9 showed substantially improved metabolic stability (>85% intact in blood at 4 h after injection), resulting in high uptake at the target site (0.5-0.8 percentage injected dose per gram) that persisted over 5 h, producing increasingly greater target-to-background ratios. The thrombus uptake was 5- to 20-fold higher than the uptake in the contralateral artery, blood, muscle, lungs, bone, spleen, large intestine, and heart at 2 h after injection and 10- to 40-fold higher at 5 h. The Al(18)F derivatives FBP10 and FBP11 were less stable, in particular the NODAGA conjugate (FBP10, <30% intact in blood at 4 h after injection), which showed high bone uptake and low thrombus-to-background ratios that decreased over time. The high thrombus-to-contralateral ratios for all probes were confirmed by ex vivo biodistribution and autoradiography. The uptake in the liver (<0.5 percentage injected dose per gram), kidneys, and blood were similar for all tracers, and they all showed predominant renal clearance. CONCLUSION FBP8, FBP9, and FBP11 showed excellent metabolic stability and high thrombus-to-background ratios and represent promising candidates for imaging of thrombosis in vivo.
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Affiliation(s)
- Francesco Blasi
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts
| | - Bruno L Oliveira
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts
| | - Tyson A Rietz
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts
| | - Nicholas J Rotile
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts
| | - Helen Day
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts
| | - Richard J Looby
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts
| | - Ilknur Ay
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts
| | - Peter Caravan
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts
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Ay I, Blasi F, Rietz TA, Rotile NJ, Kura S, Brownell AL, Day H, Oliveira BL, Looby RJ, Caravan P. In vivo molecular imaging of thrombosis and thrombolysis using a fibrin-binding positron emission tomographic probe. Circ Cardiovasc Imaging 2014; 7:697-705. [PMID: 24777937 DOI: 10.1161/circimaging.113.001806] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Fibrin is a major component of arterial and venous thrombi and represents an ideal candidate for molecular imaging of thrombosis. Here, we describe imaging properties and target uptake of a new fibrin-specific positron emission tomographic probe for thrombus detection and therapy monitoring in 2 rat thrombosis models. METHODS AND RESULTS The fibrin-binding probe FBP7 was synthesized by conjugation of a known short cyclic peptide to a cross-bridged chelator (CB-TE2A), followed by labeling with copper-64. Adult male Wistar rats (n=26) underwent either carotid crush injury (mural thrombosis model) or embolic stroke (occlusive thrombosis model) followed by recombinant tissue-type plasminogen activator treatment (10 mg/kg, IV). FBP7 detected thrombus location in both animal models with a high positron emission tomographic target-to-background ratio that increased over time (>5-fold at 30-90 minutes, >15-fold at 240-285 minutes). In the carotid crush injury animals, biodistribution analysis confirmed high probe uptake in the thrombotic artery (≈0.5%ID/g; >5-fold greater than blood and other tissues of the head and thorax). Similar results were obtained from ex vivo autoradiography of the ipsilateral versus contralateral carotid arteries. In embolic stroke animals, positron emission tomographic-computed tomographic imaging localized the clot in the internal carotid/middle cerebral artery segment of all rats. Time-dependent reduction of activity at the level of the thrombus was detected in recombinant tissue-type plasminogen activator-treated rats but not in vehicle-injected animals. Brain autoradiography confirmed clot dissolution in recombinant tissue-type plasminogen activator-treated animals, but enduring high thrombus activity in control rats. CONCLUSIONS We demonstrated that FBP7 is suitable for molecular imaging of thrombosis and thrombolysis in vivo and represents a promising candidate for bench-to-bedside translation.
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Affiliation(s)
- Ilknur Ay
- From the Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA
| | - Francesco Blasi
- From the Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA
| | - Tyson A Rietz
- From the Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA
| | - Nicholas J Rotile
- From the Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA
| | - Sreekanth Kura
- From the Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA
| | - Anna Liisa Brownell
- From the Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA
| | - Helen Day
- From the Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA
| | - Bruno L Oliveira
- From the Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA
| | - Richard J Looby
- From the Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA
| | - Peter Caravan
- From the Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA.
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Oliveira BL, Morais M, Gano L, Santos I, Correia JDG. A99mTc(CO)3-labeled benzylguanidine with persistent heart uptake. J Labelled Comp Radiopharm 2014; 57:358-64. [DOI: 10.1002/jlcr.3188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 01/07/2014] [Accepted: 01/08/2014] [Indexed: 01/21/2023]
Affiliation(s)
- Bruno L. Oliveira
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico; Universidade de Lisboa; Estrada Nacional 10 (ao km 139, 7) 2695-066 Bobadela LRS Portugal
| | - Maurício Morais
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico; Universidade de Lisboa; Estrada Nacional 10 (ao km 139, 7) 2695-066 Bobadela LRS Portugal
| | - Lurdes Gano
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico; Universidade de Lisboa; Estrada Nacional 10 (ao km 139, 7) 2695-066 Bobadela LRS Portugal
| | - Isabel Santos
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico; Universidade de Lisboa; Estrada Nacional 10 (ao km 139, 7) 2695-066 Bobadela LRS Portugal
| | - João D. G. Correia
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico; Universidade de Lisboa; Estrada Nacional 10 (ao km 139, 7) 2695-066 Bobadela LRS Portugal
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Blasi F, Ay I, Rietz TA, Rotile NJ, Day H, Oliveira BL, Looby RJ, Caravan P. Abstract 212: In Vivo Molecular Imaging of Thrombosis and Thrombolysis Using a Fibrin-binding PET Probe. Stroke 2014. [DOI: 10.1161/str.45.suppl_1.212] [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: 11/16/2022]
Abstract
Background and purpose:
Thrombus formation plays a critical role in cardiovascular diseases, but thrombus imaging is still challenging. Fibrin is a major component of both arterial and venous thrombi, and represents an ideal candidate for molecular imaging of thrombosis. Here, we describe imaging properties and target uptake of a new fibrin-specific PET probe for thrombus detection in two rat models of thrombosis and stroke.
Materials and methods:
The fibrin-binding probe FBP7 was synthesized by conjugation of the cyclic peptide FHCHypY(3-CI)DLCHIL to a cross-bridge chelator (CB-TE2A), followed by labeling with copper-64. Wistar rats (4-6/group) underwent carotid crush, as a non-occlusive, mural thrombosis model, or embolic stroke as an occlusive clot model followed by thrombolysis.
Results:
FBP7 clearly detected thrombus location in both animal models, with a high PET target:background ratio that increased over time (>5-fold at 30-90’, >15-fold at 240-300’, Fig. A-B). Biodistribution confirmed the high thrombus uptake (~0.5 %ID/g), which was >5-10 folds greater than blood and other tissues of the head and thorax (C). Similar results were obtained from ex vivo autoradiography of ipsilateral vs. controlateral carotid arteries (D). PET/CT imaging allowed clot localization in the internal carotid/middle cerebral artery (ICA/MCA) segment of all stroke rats. After baseline PET acquisition, animals were infused with tPA (10 mg/kg, i.v.) or vehicle (saline) and imaged again for 90’. Time-dependent reduction of activity at the level of the thrombus was clearly detected in treated rats, but not in vehicle group (E). Brain autoradiography confirmed clot dissolution in tPA-treated animals, but enduring high thrombus activity in ipsilateral ICA/MCA of control rats (F-G).
Conclusions:
We demonstrated that FBP7 is suitable for molecular imaging of thrombosis and thrombolysis in vivo, and represents a very promising candidate for bench-to-bedside translation.
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Affiliation(s)
- Francesco Blasi
- Martinos Cntr for Biomedical Imaging, Massachusetts General Hosp, Charlestown, MA
| | - Ilknur Ay
- Martinos Cntr for Biomedical Imaging, Massachusetts General Hosp, Charlestown, MA
| | - Tyson A Rietz
- Martinos Cntr for Biomedical Imaging, Massachusetts General Hosp, Charlestown, MA
| | - Nicholas J Rotile
- Martinos Cntr for Biomedical Imaging, Massachusetts General Hosp, Charlestown, MA
| | - Helen Day
- Martinos Cntr for Biomedical Imaging, Massachusetts General Hosp, Charlestown, MA
| | - Bruno L Oliveira
- Martinos Cntr for Biomedical Imaging, Massachusetts General Hosp, Charlestown, MA
| | - Richard J Looby
- Martinos Cntr for Biomedical Imaging, Massachusetts General Hosp, Charlestown, MA
| | - Peter Caravan
- Martinos Cntr for Biomedical Imaging, Massachusetts General Hosp, Charlestown, MA
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de Almeida A, Oliveira BL, Correia JD, Soveral G, Casini A. Emerging protein targets for metal-based pharmaceutical agents: An update. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.01.031] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Morais M, Oliveira BL, Correia JDG, Oliveira MC, Jiménez MA, Santos I, Raposinho PD. Influence of the Bifunctional Chelator on the Pharmacokinetic Properties of 99mTc(CO)3-Labeled Cyclic α-Melanocyte Stimulating Hormone Analog. J Med Chem 2013; 56:1961-73. [DOI: 10.1021/jm301647t] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maurício Morais
- Unidade de Ciências Químicas
e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico,
Universidade Técnica de Lisboa, Estrada Nacional 10, 2686-953,
Sacavém, Portugal
| | - Bruno L. Oliveira
- Unidade de Ciências Químicas
e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico,
Universidade Técnica de Lisboa, Estrada Nacional 10, 2686-953,
Sacavém, Portugal
| | - João D. G. Correia
- Unidade de Ciências Químicas
e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico,
Universidade Técnica de Lisboa, Estrada Nacional 10, 2686-953,
Sacavém, Portugal
| | - Maria Cristina Oliveira
- Unidade de Ciências Químicas
e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico,
Universidade Técnica de Lisboa, Estrada Nacional 10, 2686-953,
Sacavém, Portugal
| | - Maria Angeles Jiménez
- Instituto de Química
Física Rocasolano, Consejo Superior de Investigaciones Científicas
(CSIC), Serrano 119, 28006 Madrid, Spain
| | - Isabel Santos
- Unidade de Ciências Químicas
e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico,
Universidade Técnica de Lisboa, Estrada Nacional 10, 2686-953,
Sacavém, Portugal
| | - Paula D. Raposinho
- Unidade de Ciências Químicas
e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico,
Universidade Técnica de Lisboa, Estrada Nacional 10, 2686-953,
Sacavém, Portugal
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Oliveira BL, Moreira IS, Fernandes PA, Ramos MJ, Santos I, Correia JDG. Insights into the structural determinants for selective inhibition of nitric oxide synthase isoforms. J Mol Model 2012; 19:1537-51. [DOI: 10.1007/s00894-012-1677-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Accepted: 11/05/2012] [Indexed: 12/01/2022]
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Palma E, Correia JDG, Oliveira BL, Gano L, Santos IC, Santos I. 99mTc(CO)3-labeled pamidronate and alendronate for bone imaging. Dalton Trans 2011; 40:2787-96. [DOI: 10.1039/c0dt01396j] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Oliveira BL, Raposinho PD, Mendes F, Figueira F, Santos I, Ferreira A, Cordeiro C, Freire AP, Correia JDG. Re and Tc Tricarbonyl Complexes: From the Suppression of NO Biosynthesis in Macrophages to in Vivo Targeting of Inducible Nitric Oxide Synthase. Bioconjug Chem 2010; 21:2168-72. [DOI: 10.1021/bc100291e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Bruno L. Oliveira
- Unidade de Ciências Químicas e Radiofarmacêuticas, ITN, Estrada Nacional 10, 2686-953 Sacavém, Portugal, and Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
| | - Paula D. Raposinho
- Unidade de Ciências Químicas e Radiofarmacêuticas, ITN, Estrada Nacional 10, 2686-953 Sacavém, Portugal, and Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
| | - Filipa Mendes
- Unidade de Ciências Químicas e Radiofarmacêuticas, ITN, Estrada Nacional 10, 2686-953 Sacavém, Portugal, and Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
| | - Flávio Figueira
- Unidade de Ciências Químicas e Radiofarmacêuticas, ITN, Estrada Nacional 10, 2686-953 Sacavém, Portugal, and Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
| | - Isabel Santos
- Unidade de Ciências Químicas e Radiofarmacêuticas, ITN, Estrada Nacional 10, 2686-953 Sacavém, Portugal, and Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
| | - António Ferreira
- Unidade de Ciências Químicas e Radiofarmacêuticas, ITN, Estrada Nacional 10, 2686-953 Sacavém, Portugal, and Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
| | - Carlos Cordeiro
- Unidade de Ciências Químicas e Radiofarmacêuticas, ITN, Estrada Nacional 10, 2686-953 Sacavém, Portugal, and Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
| | - Ana P. Freire
- Unidade de Ciências Químicas e Radiofarmacêuticas, ITN, Estrada Nacional 10, 2686-953 Sacavém, Portugal, and Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
| | - João D. G. Correia
- Unidade de Ciências Químicas e Radiofarmacêuticas, ITN, Estrada Nacional 10, 2686-953 Sacavém, Portugal, and Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Portugal
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Oliveira BL, Liu Y, Correia JD, Santos I, Gano L, Spingler B, Alberto R. 2,3-Diamino propionic acid based chelators for labeling biomolecules with 99mTc(I). Nucl Med Biol 2010. [DOI: 10.1016/j.nucmedbio.2010.04.111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Liu Y, Oliveira BL, Correia JDG, Santos IC, Santos I, Spingler B, Alberto R. Syntheses of bifunctional 2,3-diamino propionic acid-based chelators as small and strong tripod ligands for the labelling of biomolecules with (99m)Tc. Org Biomol Chem 2010; 8:2829-39. [PMID: 20445942 DOI: 10.1039/c002796k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The labelling of targeting biomolecules requires small and hydrophilic complexes in order to not affect the binding properties of the vectors. 2,3-Diamino propionic acid (dap) is a small and strong, albeit scarcely used, tripod ligand for the fac-[(99m)Tc(CO)(3)](+) moiety. We have introduced at the alpha-carbon atom in the basic dap structure various second functionalities such as carboxylato, amino and alpha-amino acid groups via various spacers in order to yield bifunctional chelators. These dap derivatives can be coupled to targeting molecules for application in molecular imaging. Full characterizations of the bifunctional chelators, X-ray structures of intermediates and of one rhenium complex, as well as labelling studies with (99m)Tc, are presented.
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Affiliation(s)
- Yu Liu
- University of Zürich, Institute of Inorganic Chemistry, Winterthurerstr. 190, 8057 Zürich, Switzerland
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Palacios A, Moreno A, Oliveira BL, Rivera T, Prieto J, García P, Fernández-Fernández MR, Bernadó P, Palmero I, Blanco FJ. The Dimeric Structure and the Bivalent Recognition of H3K4me3 by the Tumor Suppressor ING4 Suggests a Mechanism for Enhanced Targeting of the HBO1 Complex to Chromatin. J Mol Biol 2010; 396:1117-27. [DOI: 10.1016/j.jmb.2009.12.049] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2009] [Revised: 12/23/2009] [Accepted: 12/23/2009] [Indexed: 01/03/2023]
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Oliveira BL, Cavalcanti CM, Azevedo APS, Tomiyoshi MY, Bergami-Santos PC, Barbuto JAM. Human monocytes but not dendritic cells are killed by blocking of autocrine cyclooxygenase activity. Cell Immunol 2009; 258:107-14. [PMID: 19394592 DOI: 10.1016/j.cellimm.2009.03.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2008] [Revised: 03/26/2009] [Accepted: 03/30/2009] [Indexed: 02/02/2023]
Abstract
Dendritic cells (DCs), in peripheral tissues, derive mostly from blood precursors that differentiate into DCs under the influence of the local microenvironment. Monocytes constitute the main known DC precursors in blood and their infiltration into tissues is up-regulated during inflammation. During this process, the local production of mediators, like prostaglandins (PGs), influence significantly DC differentiation and function. In the present paper we show that treatment of blood adherent mononuclear cells with 10microM indomethacin, a dose achieved in human therapeutic settings, causes monocytes' progressive death but does not affect DCs viability or cell surface phenotype. This resistance of DCs was observed both for cells differentiated in vitro from blood monocytes and for a population with DCs characteristics already present in blood. This phenomenon could affect the local balance of antigen-presenting cells, influence the induction and pattern of immune responses developed under the treatment with non-steroidal anti-inflammatory drugs and, therefore, deserves further investigation.
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Affiliation(s)
- Bruno L Oliveira
- Laboratory of Tumor Immunology, Department of Immunology, University of São Paulo, São Paulo, Brazil
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Oliveira BL, Correia JDG, Raposinho PD, Santos I, Ferreira A, Cordeiro C, Freire AP. Re and (99m)Tc organometallic complexes containing pendant l-arginine derivatives as potential probes of inducible nitric oxide synthase. Dalton Trans 2008:152-62. [PMID: 19081984 DOI: 10.1039/b805986a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Aiming to design radioactive compounds based on the core "(99m)Tc(CO)(3)" for probing inducible nitric oxide synthase (iNOS) levels in vivo, we have synthesized conjugates containing a pyrazolyl-diamine chelating unit and pendant l-arginine analogues (substrates and inhibitors of NOS). Reaction of the conjugates with fac-[M(CO)(3)](+) (M = Re, (99m)Tc) gave bioorganometallic complexes of the type fac-[M(CO)(3)(k(3)-L)] in good yield. After in vitro testing using the oxyhemoglobin NO capture assay, we concluded that the affinity of the inhibitor-containing conjugates to iNOS seems to be less affected upon metallation with rhenium than the substrate-containing conjugates. The complexes bearing guanidino substituted analogues of l-arginine still present considerable inhibitory action (N(omega)-monomethyl-l-arginine, K(i) = 36 microM; N(omega)-nitro-l-arginine, K(i) = 84 microM), being the first examples of organometallic complexes able to inhibit the iNOS. These results seem to indicate that (99m)Tc(CO)(3)-labeled L-argininine analogues, namely NOS inhibitors, may hold potential for monitoring increased levels of iNOS in vivo.
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Affiliation(s)
- Bruno L Oliveira
- Departamento de Química, ITN, Estrada Nacional 10, 2686-953, Sacavém, Portugal
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Palma E, Oliveira BL, Correia JDG, Gano L, Maria L, Santos IC, Santos I. A new bisphosphonate-containing 99mTc(I) tricarbonyl complex potentially useful as bone-seeking agent: synthesis and biological evaluation. J Biol Inorg Chem 2007; 12:667-79. [PMID: 17333301 DOI: 10.1007/s00775-007-0215-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2006] [Accepted: 01/28/2007] [Indexed: 10/23/2022]
Abstract
Aiming to develop new bone-seeking radiotracers based on the organometallic core fac-[(99m)Tc(CO)(3)](+) with improved radiochemical and biological properties, we have prepared new conjugates with phosphonate pendant groups. The conjugates comprise a chelating unit for metal coordination, which corresponds to a pyrazolyl-containing backbone (pz) with a N,N,N donor-atom set, and a pendant diethyl phosphonate (pz-MPOEt), phosphonic acid (pz-MPOH) or a bisphosphonic acid (pz-BPOH) group for bone targeting. Reactions of the conjugates with the precursor [(99m)Tc(H(2)O)(3)(CO)(3)](+) yielded (mote than 95%) the single and well-defined radioactive species [(99m)Tc(CO)(3)(kappa(3)-pz-MPOEt)](+) (1a), [(99m)Tc(CO)(3)(kappa(3)-pz-MPOH](+) (2a) and [(99m)Tc(CO)(3)(kappa(3)-pz-BPOH)](+) (3a), which were characterized by reversed-phase high-performance liquid chromatography . The corresponding Re surrogates (1-3), characterized by the usual analytical techniques, including X-ray diffraction analysis in the case of 1, allowed for macroscopic identification of the radioactive conjugates. These radioactive complexes revealed high stability both in vitro (phosphate-buffered saline solution and human plasma) and in vivo, without any measurable decomposition. Biodistribution studies of the complexes in mice indicated a fast rate of blood clearance and high rate of total radioactivity excretion, occurring primarily through the renal-urinary pathway in the case of complex 3a. Despite presenting moderate bone uptake (3.04 +/- 0.47% injected dose per gram of organ, 4 h after injection), the high stability presented by 3a and its adequate in vivo pharmacokinetics encourages the search for new ligands with the same chelating unit and different bisphosphonic acid pendant arms.
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Affiliation(s)
- Elisa Palma
- Departamento de Química, ITN, Estrada Nacional 10, 2686-953 Sacavém Codex, Portugal
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Palma E, Oliveira BL, Figueira F, Correia JDG, Raposinho PD, Santos I. A pyrazolylamine-phosphonate monoester chelator for thefac-[M(CO)3]+ core (M = Re,99mTc): synthesis, coordination properties and biological assessment. J Labelled Comp Radiopharm 2007. [DOI: 10.1002/jlcr.1415] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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