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Franco Machado J, Sá M, Pires I, da Silva MT, Marques F, Coelho JAS, Mendes F, Piedade MFM, Machuqueiro M, Jiménez MA, Garcia MH, Correia JDG, Morais TS. Dual FGFR-targeting and pH-activatable ruthenium-peptide conjugates for targeted therapy of breast cancer. Dalton Trans 2024. [PMID: 38573236 DOI: 10.1039/d4dt00497c] [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: 04/05/2024]
Abstract
Dysregulation of Fibroblast Growth Factor Receptors (FGFRs) signaling has been associated with breast cancer, yet employing FGFR-targeted delivery systems to improve the efficacy of cytotoxic agents is still sparsely exploited. Herein, we report four new bi-functional ruthenium-peptide conjugates (RuPCs) with FGFR-targeting and pH-dependent releasing abilities, envisioning the selective delivery of cytotoxic Ru complexes to FGFR(+)-breast cancer cells, and controlled activation at the acidic tumoral microenvironment. The antiproliferative potential of the RuPCs and free Ru complexes was evaluated in four breast cancer cell lines with different FGFR expression levels (SKBR-3, MDA-MB-134-VI, MCF-7, and MDA-MB-231) and in human dermal fibroblasts (HDF), at pH 6.8 and pH 7.4 aimed at mimicking the tumor microenvironment and normal tissues/bloodstream pHs, respectively. The RuPCs showed higher cytotoxicity in cells with higher level of FGFR expression at acidic pH. Additionally, RuPCs showed up to 6-fold higher activity in the FGFR(+) breast cancer lines compared to the normal cell line. The release profile of Ru complexes from RuPCs corroborates the antiproliferative effects observed. Remarkably, the cytotoxicity and releasing ability of RuPCs were shown to be strongly dependent on the conjugation of the peptide position in the Ru complex. Complementary molecular dynamic simulations and computational calculations were performed to help interpret these findings at the molecular level. In summary, we identified a lead bi-functional RuPC that holds strong potential as a FGFR-targeted chemotherapeutic agent.
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Affiliation(s)
- João Franco Machado
- Centro de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139, 7), 2695-066 Bobadela LRS, Portugal.
| | - Marco Sá
- Centro de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
| | - Inês Pires
- BioISI - Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Miguel Tarita da Silva
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139, 7), 2695-066 Bobadela LRS, Portugal.
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139, 7), 2695-066 Bobadela LRS, Portugal.
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139, 7), 2695-066 Bobadela LRS, Portugal
| | - Jaime A S Coelho
- Centro de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
| | - Filipa Mendes
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139, 7), 2695-066 Bobadela LRS, Portugal.
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139, 7), 2695-066 Bobadela LRS, Portugal
| | - M Fátima M Piedade
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Miguel Machuqueiro
- BioISI - Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - María Angeles Jiménez
- Institute of Physical Chemistry Blas Cabreras (IQF-CSIC), Serrano 119, E-28006 Madrid, Spain
| | - Maria Helena Garcia
- Centro de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - João D G Correia
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139, 7), 2695-066 Bobadela LRS, Portugal.
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139, 7), 2695-066 Bobadela LRS, Portugal
| | - Tânia S Morais
- Centro de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
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Maximiano I, Henriques C, Teixeira RG, Marques F, Valente A, Antunes AMM. Lead to hit ruthenium-cyclopentadienyl anticancer compounds: Cytotoxicity against breast cancer cells, metabolic stability and metabolite profiling. J Inorg Biochem 2024; 251:112436. [PMID: 38016328 DOI: 10.1016/j.jinorgbio.2023.112436] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/13/2023] [Accepted: 11/20/2023] [Indexed: 11/30/2023]
Abstract
The successful choice of hit compounds during drug development programs involves the integration of structure-activity relationship (SAR) studies with pharmacokinetic determinations, including metabolic stability assays and metabolite profiling. A panel of nine ruthenium-cyclopentadienyl (RuCp) compounds with the general formula [Ru(η5-C5H4R)(PPh3)(bipyR')]+ (with R = H, CHO, CH2OH; R' = H, CH3, CH2OH, CH2Biotin) has been tested against hormone-dependent MCF-7 and triple negative MDA-MB-231 breast cancer cells. In general, all compounds showed important cytotoxicity against both cancer cell lines and were able to inhibit the formation of MDA-MB-231 colonies in a dose-dependent manner, while showing selectivity for cancer cells over normal fibroblasts. Among them, four compounds stood out as lead structures to be further studied. Cell distribution assays revealed their preference for the accumulation at cell membrane (Ru quantification by ICP-MS) and the mechanism of cell death seemed to be mediated by apoptosis. Potential structural liabilities of lead compounds were subsequently flagged upon in vitro metabolic stability assays and metabolite profiling. The implementation of this integrated strategy led to the selection of RT151 as a promising hit compound.
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Affiliation(s)
- Inês Maximiano
- Centro de Química Estrutural, Institute of Molecular Sciences and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal; Centro de Química Estrutural (CQE), Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico (IST), Universidade de Lisboa, Lisboa 1049-001, Portugal
| | - Catarina Henriques
- Centro de Química Estrutural, Institute of Molecular Sciences and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal; Centro de Química Estrutural (CQE), Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico (IST), Universidade de Lisboa, Lisboa 1049-001, Portugal
| | - Ricardo G Teixeira
- Centro de Química Estrutural, Institute of Molecular Sciences and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares (C(2)TN) and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, Bobadela LRS 2695-066, Portugal
| | - Andreia Valente
- Centro de Química Estrutural, Institute of Molecular Sciences and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal.
| | - Alexandra M M Antunes
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico (IST), Universidade de Lisboa, Lisboa 1049-001, Portugal.
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Richter LF, Marques F, Correia JDG, Pöthig A, Kühn FE. Exploiting click-chemistry: backbone post-functionalisation of homoleptic gold(I) 1,2,3-triazole-5-ylidene complexes. Dalton Trans 2023; 52:17185-17192. [PMID: 37942578 DOI: 10.1039/d3dt03052k] [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: 11/10/2023]
Abstract
The synthesis of a homoleptic azide-functionalised Au(I) bis-1,2,3-triazole-5-ylidene complex is reported, starting from a backbone-modified 1,2,3-triazolium salt ligand precursor. The incorporated azide handle allows for a straightforward modification of the complex according to click-chemistry protocols without impacting the steric shielding around the metal center, demonstrating the superiority of the presented triazole ligand framework over imidazole based systems. Employing the SPAAC and the CuAAC reactions, post-modification of the complex is facilitated with two model substrates, while retaining very high antiproliferative activity (nanomolar range IC50 values) in A2780 and MCF-7 human cancer cells.
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Affiliation(s)
- Leon F Richter
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry and Catalysis Research Centre, Molecular Catalysis, Lichtenbergstr. 4, 85748, Garching bei München, Germany.
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, CTN, Estrada Nacional 10 (km 139, 7), 2695-066 Bobadela LRS, Portugal
| | - João D G Correia
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, CTN, Estrada Nacional 10 (km 139, 7), 2695-066 Bobadela LRS, Portugal
| | - Alexander Pöthig
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry; Catalysis Research Center, Lichtenbergstr. 4, 85748 Garching bei München, Germany
| | - Fritz E Kühn
- Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry and Catalysis Research Centre, Molecular Catalysis, Lichtenbergstr. 4, 85748, Garching bei München, Germany.
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Ferreira AC, Marques F. The Effects of Stress on Hippocampal Neurogenesis and Behavior in the Absence of Lipocalin-2. Int J Mol Sci 2023; 24:15537. [PMID: 37958520 PMCID: PMC10649401 DOI: 10.3390/ijms242115537] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/17/2023] [Accepted: 10/20/2023] [Indexed: 11/15/2023] Open
Abstract
Lipocalin-2 (LCN2) is an acute phase protein able to bind iron when complexed with bacterial siderophores. The recent identification of a mammalian siderophore also suggested a physiological role for LCN2 in the regulation of iron levels and redox state. In the central nervous system, the deletion of LCN2 induces deficits in neural stem cells proliferation and commitment, with an impact on the hippocampal-dependent contextual fear discriminative task. Additionally, stress is a well-known regulator of cell genesis and is known to decrease adult hippocampal cell proliferation and neurogenesis. Although voluntary running, another well-known regulator of neurogenesis, is sufficient to rescue the defective hippocampal neurogenesis and behavior in LCN2-null mice by promoting stem cells' cell cycle progression and maturation, the relevance of LCN2-regulated hippocampal neurogenesis in response to stress has never been explored. Here, we show a lack of response by LCN2-null mice to the effects of chronic stress exposure at the cellular and behavioral levels. Together, these findings implicate LCN2 as a relevant mediator of neuronal plasticity and brain function in the adult mammalian brain.
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Affiliation(s)
- Ana Catarina Ferreira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal;
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal;
- ICVS/3B’s—PT Government Associate Laboratory, 4710-057 Braga, Portugal
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das Neves SP, Sousa JC, Magalhães R, Gao F, Coppola G, Mériaux S, Boumezbeur F, Sousa N, Cerqueira JJ, Marques F. Astrocytes Undergo Metabolic Reprogramming in the Multiple Sclerosis Animal Model. Cells 2023; 12:2484. [PMID: 37887329 PMCID: PMC10605171 DOI: 10.3390/cells12202484] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/03/2023] [Accepted: 10/13/2023] [Indexed: 10/28/2023] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system that presents a largely unknown etiopathology. The presence of reactive astrocytes in MS lesions has been described for a long time; however, the role that these cells play in the pathophysiology of MS is still not fully understood. Recently, we used an MS animal model to perform high-throughput sequencing of astrocytes' transcriptome during disease progression. Our data show that astrocytes isolated from the cerebellum (a brain region typically affected in MS) showed a strong alteration in the genes that encode for proteins related to several metabolic pathways. Specifically, we found a significant increase in glycogen degradation, glycolytic, and TCA cycle enzymes. Together with these alterations, we detected an upregulation of genes that characterize "astrocyte reactivity". Additionally, at each disease time point we also reconstructed the morphology of cerebellum astrocytes in non-induced controls and in EAE animals, near lesion regions and in the normal-appearing white mater (NAWM). We found that near lesions, astrocytes presented increased length and complexity compared to control astrocytes, while no significant alterations were observed in the NAWM. How these metabolic alterations are linked with disease progression is yet to be uncovered. Herein, we bring to the literature the hypothesis of performing metabolic reprogramming as a novel therapeutic approach in MS.
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Affiliation(s)
- Sofia Pereira das Neves
- Life and Health Sciences Research Institute (ICVS), School of Medicine, Campus Gualtar, University of Minho, 4710-057 Braga, Portugal; (S.P.d.N.); (J.C.S.); n (N.S.); (J.J.C.)
- ICVS/3B’s PT Government Associate Laboratory, 4806-909 Guimarães, Portugal
| | - João Carlos Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, Campus Gualtar, University of Minho, 4710-057 Braga, Portugal; (S.P.d.N.); (J.C.S.); n (N.S.); (J.J.C.)
- ICVS/3B’s PT Government Associate Laboratory, 4806-909 Guimarães, Portugal
| | - Ricardo Magalhães
- NeuroSpin, CEA, Paris-Saclay University, Centre d’études de Saclay, Bâtiment 145, 91191 Gif-sur-Yvette, France (S.M.); (F.B.)
| | - Fuying Gao
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (F.G.); (G.C.)
| | - Giovanni Coppola
- Program in Neurogenetics, Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; (F.G.); (G.C.)
| | - Sebatien Mériaux
- NeuroSpin, CEA, Paris-Saclay University, Centre d’études de Saclay, Bâtiment 145, 91191 Gif-sur-Yvette, France (S.M.); (F.B.)
| | - Fawzi Boumezbeur
- NeuroSpin, CEA, Paris-Saclay University, Centre d’études de Saclay, Bâtiment 145, 91191 Gif-sur-Yvette, France (S.M.); (F.B.)
| | - Nuno Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, Campus Gualtar, University of Minho, 4710-057 Braga, Portugal; (S.P.d.N.); (J.C.S.); n (N.S.); (J.J.C.)
- ICVS/3B’s PT Government Associate Laboratory, 4806-909 Guimarães, Portugal
- Clinical Academic Center, 4710-243 Braga, Portugal
| | - João José Cerqueira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, Campus Gualtar, University of Minho, 4710-057 Braga, Portugal; (S.P.d.N.); (J.C.S.); n (N.S.); (J.J.C.)
- ICVS/3B’s PT Government Associate Laboratory, 4806-909 Guimarães, Portugal
- Clinical Academic Center, 4710-243 Braga, Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, Campus Gualtar, University of Minho, 4710-057 Braga, Portugal; (S.P.d.N.); (J.C.S.); n (N.S.); (J.J.C.)
- ICVS/3B’s PT Government Associate Laboratory, 4806-909 Guimarães, Portugal
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Alguacil A, Scalambra F, Romerosa A, Bento-Oliveira A, Marques F, Maximiano I, de Almeida RFM, Tomaz AI, Valente A. Evaluation of the Antiproliferative Properties of CpRu Complexes Containing N-Methylated Triazaphosphaadamantane Derivatives. Bioinorg Chem Appl 2023; 2023:6669394. [PMID: 37808953 PMCID: PMC10555500 DOI: 10.1155/2023/6669394] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/06/2023] [Accepted: 08/11/2023] [Indexed: 10/10/2023] Open
Abstract
Piano-stool-{CpRu} complexes containing 1,3,5-triaza-7-phosphaadamantane (PTA), N-methyl-1,3,5-triaza-7-phosphaadamantane (mPTA), and 3,7-dimethyl-1,3,7-triaza-5-phosphabyciclo[3.3.1]nonane (dmoPTA) were evaluated as drugs against breast cancer. The evaluated compounds include two new examples of this family, the complexes [RuCp(DMSO-κS)(HdmoPTA)(PPh3)](CF3SO3)2 (8) and [RuCp(PPh3)2-µ-dmoPTA-1κP-2κ2N,N'-PdCl2](CF3SO3) (11), which have been synthesized and characterized by NMR, IR, and single-crystal X-ray diffraction. The cytotoxic activity of compounds was evaluated against MDA-MB-231 breast cancer cells, and the three most active complexes were further tested against the hormone-dependent MCF-7 breast cancer cell line. Their cell death mechanism and ruthenium uptake were also evaluated, as well as their binding ability to human serum albumin.
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Affiliation(s)
- Andres Alguacil
- Área de Química Inorgánica–CIESOL, Universidad de Almería, Almería 04120, Spain
| | - Franco Scalambra
- Área de Química Inorgánica–CIESOL, Universidad de Almería, Almería 04120, Spain
| | - Antonio Romerosa
- Área de Química Inorgánica–CIESOL, Universidad de Almería, Almería 04120, Spain
| | - Andreia Bento-Oliveira
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares e Departamento de Engenharia e Ciências Nculeares, Instituto Superior Técnico (C2TN/IST), Universidade de Lisboa, Estrada Nacional 10, Bobadela LRS 2695-066, Portugal
| | - Ines Maximiano
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal
| | - Rodrigo F. M. de Almeida
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal
| | - Ana Isabel Tomaz
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal
| | - Andreia Valente
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal
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Botelho MJ, Vale C, Marques F, Moreirinha C, Costa ST, Guilhermino L, Joaquim S, Matias D, Candeias M, Rudnitskaya A. One-year variation in quantity and properties of microplastics in mussels (Mytilus galloprovincialis) and cockles (Cerastoderma edule) from Aveiro lagoon. Environ Pollut 2023; 333:121949. [PMID: 37302782 DOI: 10.1016/j.envpol.2023.121949] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/13/2023]
Abstract
As filter feeders, marine bivalves inhabiting estuarine and coastal areas are directly exposed to microplastics (MPs) in water. To assess whether MPs number, and their shape, size, colour, and polymer type present in mussels (Mytilus galloprovincialis) and cockles (Cerastoderma edule) varied over one year, bivalves were collected over the year of 2019 in the lower part of the coastal Aveiro lagoon, Portugal. After extraction from the bivalve's whole-body soft tissues, a subset of the visually inspected particles was randomly separated for identification using the Fourier-transform mid-infrared (FT-MIR) spectroscopy. A fraction of the inspected particles, 26-32% of particles >100 μm, and 59-100% of smaller ones were confirmed as MPs. Concentrations varied within the intervals of 0.77-4.3 items g-1 in mussels and 0.83-5.1 items g-1 in cockles, with the lowest values observed in January. In winter, the accumulation of large-sized fibers was composed of a mixture of plastic types, which contrasted against the most abundant MPs in summer consisting mainly of polyethylene of diverse size classes and shapes. Temperature decrease registered in winter might have triggered a lower filtration rate, resulting in lower MPs concentrations in the whole-soft body tissues of organisms. Different properties of MPs found in bivalves between January-February and August-September appear to reflect changes in the characteristics of MPs available in the Aveiro lagoon.
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Affiliation(s)
- M J Botelho
- IPMA, Portuguese Institute for the Sea and Atmosphere, Av. Alfredo Magalhães Ramalho 6, 1495-165, Algés, Portugal; CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto, Av. General Norton de Matos S/n, 4450-208, Matosinhos, Portugal.
| | - C Vale
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto, Av. General Norton de Matos S/n, 4450-208, Matosinhos, Portugal
| | - F Marques
- IPMA, Portuguese Institute for the Sea and Atmosphere, Av. Alfredo Magalhães Ramalho 6, 1495-165, Algés, Portugal
| | - C Moreirinha
- CESAM, Centre for Environmental and Marine Studies, Campus Universitário de Santiago, University of Aveiro, 3810-193, Aveiro, Portugal
| | - S T Costa
- IPMA, Portuguese Institute for the Sea and Atmosphere, Av. Alfredo Magalhães Ramalho 6, 1495-165, Algés, Portugal; CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto, Av. General Norton de Matos S/n, 4450-208, Matosinhos, Portugal; ICBAS, Abel Salazar Biomedical Sciences Institute, University of Porto, Largo Prof. Abel Salazar, 2, 4099-003, Porto, Portugal
| | - L Guilhermino
- ICBAS, Abel Salazar Biomedical Sciences Institute, University of Porto, Largo Prof. Abel Salazar, 2, 4099-003, Porto, Portugal
| | - S Joaquim
- IPMA, Portuguese Institute for the Sea and Atmosphere, Av. Alfredo Magalhães Ramalho 6, 1495-165, Algés, Portugal; CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto, Av. General Norton de Matos S/n, 4450-208, Matosinhos, Portugal
| | - D Matias
- IPMA, Portuguese Institute for the Sea and Atmosphere, Av. Alfredo Magalhães Ramalho 6, 1495-165, Algés, Portugal; CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto, Av. General Norton de Matos S/n, 4450-208, Matosinhos, Portugal
| | - M Candeias
- IPMA, Portuguese Institute for the Sea and Atmosphere, Av. Alfredo Magalhães Ramalho 6, 1495-165, Algés, Portugal
| | - A Rudnitskaya
- CESAM, Centre for Environmental and Marine Studies, Campus Universitário de Santiago, University of Aveiro, 3810-193, Aveiro, Portugal
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Teixeira-Castro A, Sousa JC, Vieira C, Pereira-Sousa J, Vilasboas-Campos D, Marques F, Pinto-do-Ó P, Maciel P. Learning the Biochemical Basis of Axonal Guidance: Using Caenorhabditis elegans as a Model. Biomedicines 2023; 11:1731. [PMID: 37371826 DOI: 10.3390/biomedicines11061731] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
AIM Experimental models are a powerful aid in visualizing molecular phenomena. This work reports how the worm Caenorhabditis elegans (C. elegans) can be effectively explored for students to learn how molecular cues dramatically condition axonal guidance and define nervous system structure and behavior at the organism level. Summary of work: A loosely oriented observational activity preceded detailed discussions on molecules implied in axonal migration. C. elegans mutants were used to introduce second-year medical students to the deleterious effects of gene malfunctioning in neuron response to extracellular biochemical cues and to establish links between molecular function, nervous system structure, and animal behavior. Students observed C. elegans cultures and associated animal behavior alterations with the lack of function of specific axon guidance molecules (the soluble cue netrin/UNC-6 or two receptors, DCC/UNC-40 and UNC-5H). Microscopical observations of these strains, in combination with pan-neuronal GFP expression, allowed optimal visualization of severely affected neurons. Once the list of mutated genes in each strain was displayed, students could also relate abnormal patterns in axon migration/ventral and dorsal nerve cord neuron formation in C. elegans with mutated molecular components homologous to those in humans. SUMMARY OF RESULTS Students rated the importance and effectiveness of the activity very highly. Ninety-three percent found it helpful to grasp human axonal migration, and all students were surprised with the power of the model in helping to visualize the phenomenon.
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Affiliation(s)
- Andreia Teixeira-Castro
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, 4806-909 Guimarães, Portugal
| | - João Carlos Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, 4806-909 Guimarães, Portugal
| | - Cármen Vieira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, 4806-909 Guimarães, Portugal
| | - Joana Pereira-Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, 4806-909 Guimarães, Portugal
| | - Daniela Vilasboas-Campos
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, 4806-909 Guimarães, Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, 4806-909 Guimarães, Portugal
| | - Perpétua Pinto-do-Ó
- Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, 4200-135 Porto, Portugal
| | - Patrícia Maciel
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, 4806-909 Guimarães, Portugal
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9
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Machado JF, Marques F, Pinheiro T, Brito MJVD, Scalese G, Pérez-Díaz L, Otero L, Gambino D, Morais TS, António JPM. New Cu(I)-thiosemicarbazone complexes bearing dual action as anticancer and antiparasitic agents. ChemMedChem 2023:e202300074. [PMID: 37098105 DOI: 10.1002/cmdc.202300074] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/21/2023] [Accepted: 04/25/2023] [Indexed: 04/27/2023]
Abstract
Four new Cu(I) complexes of general formula [Cu(PP)(LL)][BF4], where PP is a phosphane ligand (triphenylphosphane or 1,2-bis(diphenylphosphano)ethane (dppe)) and LL is a bioactive thiosemicarbazone ligand (4-(methyl)-1-(5-nitrofurfurylidene)thiosemicarbazone) or 4-(ethyl)-1-(5-nitrofurfurylidene)thiosemicarbazone) were synthesized and fully characterized by classical analytical and spectroscopic methods. The anti-trypanosome and the anticancer activities were investigated in vitro on Trypanossoma cruzi and in two human cancer cell lines (ovarian OVCAR3 and prostate PC3). To test the selectivity towards the parasites and cancer cells, the cytotoxicity on normal monkey kidney VERO and human dermal fibroblasts HDF cells was also evaluated. The new heteroleptic complexes were more cytotoxic on T. cruzi and chemoresistant prostate PC3 cells than the benchmark drugs nifurtimox and cisplatin. The compounds also showed a high level of cellular internalization by the OVCAR3 cells and, in particular, those containing the dppe phosphane, showed activation of the cell death mechanism via apoptosis. On the other hand, the production of ROS induced by these complexes was not evident.
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Affiliation(s)
- João Franco Machado
- Universidade de Lisboa Faculdade de Ciencias, Centro de Química Estrutural, PORTUGAL
| | - Fernanda Marques
- Universidade de Lisboa Instituto Superior Técnico Campus Alameda: Universidade de Lisboa Instituto Superior Tecnico, Centro de Ciências e Tecnologias Nucleares, PORTUGAL
| | - Teresa Pinheiro
- Universidade de Lisboa Instituto Superior Técnico: Universidade de Lisboa Instituto Superior Tecnico, iBB - Instituto de Bioengenharia e Biociências, PORTUGAL
| | | | - Gonzalo Scalese
- Universidad de la República Uruguay: Universidad de la Republica Uruguay, Área Química Inorgánica, URUGUAY
| | - Leticia Pérez-Díaz
- Universidad de la República Uruguay: Universidad de la Republica Uruguay, Laboratorio de Interacciones Moleculares, URUGUAY
| | - Lucía Otero
- Universidad de la República Uruguay: Universidad de la Republica Uruguay, Área Química Inorgánica, URUGUAY
| | - Dinorah Gambino
- Universidad de la República Uruguay: Universidad de la Republica Uruguay, Área Química Inorgánica, URUGUAY
| | - Tânia S Morais
- Universidade de Lisboa Faculdade de Ciencias, Departamento de Química e Bioquímica, Campo Grande, Ed.C8, 1749-016, Lisboa, PORTUGAL
| | - João P M António
- Universidade de Lisboa Faculdade de Farmacia, Research Institute for Medicines, PORTUGAL
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10
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Santos JF, Azevedo R, Prudêncio M, Marques F, Le Gal Y, Lorcy D, Fernandes C. Block Copolymer Micelles Encapsulating Au(III) Bis(Dithiolene) Complexes as Promising Nanostructures with Antiplasmodial Activity. Pharmaceutics 2023; 15:pharmaceutics15031030. [PMID: 36986890 PMCID: PMC10058554 DOI: 10.3390/pharmaceutics15031030] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
Block copolymer micelles (BCMs) can be used to improve the solubility of lipophilic drugs and increase their circulation half-life. Hence, BCMs assembled from MePEG-b-PCL were evaluated as drug delivery systems of gold(III) bis(dithiolene) complexes (herein AuS and AuSe) to be employed as antiplasmodial drugs. These complexes exhibited remarkable antiplasmodial activity against liver stages of the Plasmodiumberghei parasite, and low toxicity in a model of zebrafish embryos. To improve the complexes' solubility, BCMs were loaded with AuS, AuSe, and the reference drug primaquine (PQ). PQ-BCMs (Dh = 50.9 ± 2.8 nm), AuSe-BCMs (Dh = 87.1 ± 9.7 nm), and AuS-BCMs (Dh = 72.8 ± 3.1 nm) were obtained with a loading efficiency of 82.5%, 55.5%, and 77.4%, respectively. HPLC analysis and UV-Vis spectrophotometry showed that the compounds did not suffer degradation after encapsulation in BCMs. In vitro release studies suggest that AuS/AuSe-BCMs present a more controlled release compared with PQ-loaded BCMs. The antiplasmodial hepatic activity of the drugs was assessed in vitro and results indicate that both complexes present higher inhibitory activity than PQ, although encapsulated AuS and AuSe presented lower activity than their non-encapsulated counterparts. Nevertheless, these results suggest that the use of BCMs as delivery vehicles for lipophilic metallodrugs, particularly AuS and AuSe, could enable the controlled release of complexes and improve their biocompatibility, constituting a promising alternative to conventional antimalarial treatments.
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Affiliation(s)
- Joana F Santos
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, km 139.7, 2695-066 Bobadela, Portugal
| | - Raquel Azevedo
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Miguel Prudêncio
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, km 139.7, 2695-066 Bobadela, Portugal
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, km 139.7, 2695-066 Bobadela, Portugal
| | - Yann Le Gal
- Institut des Sciences Chimiques de Rennes-UMR 6226, Université de Rennes, CNRS, ISCR, F-35000 Rennes, France
| | - Dominique Lorcy
- Institut des Sciences Chimiques de Rennes-UMR 6226, Université de Rennes, CNRS, ISCR, F-35000 Rennes, France
| | - Célia Fernandes
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, km 139.7, 2695-066 Bobadela, Portugal
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, km 139.7, 2695-066 Bobadela, Portugal
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11
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Sousa N, Santa-Cruz A, Melo A, Sousa C, Marques F, Leite-Almeida H, Souza L, Marangoni M, Raia M, Santos M, Goncalves N, Morgado P, Souza P, Matos Sousa R, Gomes S, Santos W, Araújo B, Amaral E, Pereira V, Scoles P. A hitchhikers' guide to the terminology of accreditation processes for health professionals and institutions. MedEdPublish (2016) 2023; 13:11. [PMID: 38028656 PMCID: PMC10652034 DOI: 10.12688/mep.19566.1] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023] Open
Abstract
Accreditation processes for health care professions are designed to ensure that individuals and programs in these fields meet established standards of quality and effectiveness. The accelerating pace of globalization in the health care professions has increased the need for a shared understanding of the vocabulary of evaluation, assessment, and accreditation. The psychometric principles of valid and reliable assessment are commonly accepted, but the terminology is confusing. We believe that all stakeholders - evaluators, faculty, students but also the community - will benefit from a shared language and common set of definitions. We recognize that not all readers will agree with the definitions we propose, but we hope that this guide will help to ensure clarity, consistency, transparency, and fairness, and that it will promote through the stimulation of a debate greater collaboration across national and international boundaries.
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Affiliation(s)
- Nuno Sousa
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
| | - Andre Santa-Cruz
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
| | - Antonio Melo
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
| | | | - Fernanda Marques
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
| | - Hugo Leite-Almeida
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
| | - Lucimara Souza
- Santa Casa de Misericórdia de Belo Horizonte, Minas Gerais, Brazil
| | - Marco Marangoni
- Medical School, Integrado University Center, Campo Mourao, Brazil
| | - Marcia Raia
- School of Medicine, UniEduk group, UniMax Campus, Indaiatuba, Brazil
| | - Maurilio Santos
- School of Medicine, UniEduk group, UniMax Campus, Indaiatuba, Brazil
| | - Nuno Goncalves
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
| | - Pedro Morgado
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
| | - Pedro Souza
- Santa Casa de Misericórdia de Belo Horizonte, Minas Gerais, Brazil
| | - Rita Matos Sousa
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
| | - Sara Gomes
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
| | - Wilfredo Santos
- School of Medicine, UniEduk group, UniMax Campus, Indaiatuba, Brazil
| | - Beatriz Araújo
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
| | - Eliana Amaral
- School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Vitor Pereira
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
| | - Peter Scoles
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, USA
| | - MAPS
- School of Medicine, University of Minho, Portugal; Clinical Academic Center (2CA), Braga, Portugal
- Inspirali Education, Minas Gerais, Brazil
- Santa Casa de Misericórdia de Belo Horizonte, Minas Gerais, Brazil
- Medical School, Integrado University Center, Campo Mourao, Brazil
- School of Medicine, UniEduk group, UniMax Campus, Indaiatuba, Brazil
- School of Medical Sciences, University of Campinas, Campinas, Brazil
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, USA
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12
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Bălănescu F, Botezatu AV, Marques F, Busuioc A, Marincaş O, Vînătoru C, Cârâc G, Furdui B, Dinica RM. Bridging the Chemical Profile and Biological Activities of a New Variety of Agastache foeniculum (Pursh) Kuntze Extracts and Essential Oil. Int J Mol Sci 2023; 24:ijms24010828. [PMID: 36614269 PMCID: PMC9821440 DOI: 10.3390/ijms24010828] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/25/2022] [Accepted: 12/28/2022] [Indexed: 01/04/2023] Open
Abstract
This study investigated the phytochemical content of alcoholic extracts and essential oil of a new variety of medicinal plants, Agastache foeniculum (Pursh), which Kuntze adapted for cultivation in Romania, namely “Aromat de Buzău”. The essential oil was investigated by GC-MS, while the identification and quantification of various compounds from alcoholic extracts were performed by HPLC-DAD. The total phenol and flavonoid contents of the extracts were evaluated by using standard phytochemical methods. The antioxidant activities of ethanol, methanol extracts, and essential oil of the plant were also assessed against 2,2′-diphenyl-1-picrylhydrazyl (DPPH•), 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS•+), and by ferric reducing power (FRAP) using spectroscopic methods. Cyclic voltammetry was used to evaluate the antioxidant capacity of the essential oil. The concentrations of phenolic compounds were higher in methanolic extract compared to ethanolic extract. A significant correlation was found between total phenol and total flavonoid contents (r = 0.9087). Significant high correlations were also found between the total phenolic compounds and the antioxidant activities of the extracts (r ≥ 0.8600, p < 0.05). In addition, the extracts and essential oil showed good antioxidant and xanthine oxidase inhibitory activities. Estragole was detected as the major constituent of the essential oil (94.89%). The cytotoxic activity of the essential oil was evaluated by the MTT assay. At lower concentrations (1 µg/mL) high cytotoxicity against MCF-7 breast cancer cells was observed but not on the non-tumoral dermal fibroblasts (HDF) which indicated selectivity for cancer cells and suggests the presence of biologically active components that contribute to the observed high cytotoxic effect. Findings from the present study offer new perspectives on the use of A. foeniculum as a potential source of bioactive compounds and a good candidate for pharmaceutical plant-based products.
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Affiliation(s)
- Fănică Bălănescu
- Faculty of Medicine and Pharmacy, “Dunărea de Jos” University of Galati, 35 A.I. Cuza Street, 800010 Galati, Romania
- Faculty of Sciences and Environment, Department of Chemistry Physical and Environment, “Dunărea de Jos” University of Galati, 111 Domnească Street, 800201 Galati, Romania
| | - Andreea Veronica Botezatu
- Faculty of Sciences and Environment, Department of Chemistry Physical and Environment, “Dunărea de Jos” University of Galati, 111 Domnească Street, 800201 Galati, Romania
- Correspondence: (A.V.B.); (R.M.D.)
| | - Fernanda Marques
- Departamento de Engenharia e Ciências Nucleares (DECN), Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, University of Lisbon, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, Bobadela, 2695-066 Boticas, Portugal
| | - Anna Busuioc
- Faculty of Sciences and Environment, Department of Chemistry Physical and Environment, “Dunărea de Jos” University of Galati, 111 Domnească Street, 800201 Galati, Romania
| | - Olivian Marincaş
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Costel Vînătoru
- Plant Genetic Resources Bank for Vegetables, Floriculture, Aromatic and Medicinal Plants Buzău, 56 Nicolae Bălcescu Street, 120187 Buzau, Romania
| | - Geta Cârâc
- Faculty of Sciences and Environment, Department of Chemistry Physical and Environment, “Dunărea de Jos” University of Galati, 111 Domnească Street, 800201 Galati, Romania
| | - Bianca Furdui
- Faculty of Sciences and Environment, Department of Chemistry Physical and Environment, “Dunărea de Jos” University of Galati, 111 Domnească Street, 800201 Galati, Romania
| | - Rodica Mihaela Dinica
- Faculty of Sciences and Environment, Department of Chemistry Physical and Environment, “Dunărea de Jos” University of Galati, 111 Domnească Street, 800201 Galati, Romania
- Correspondence: (A.V.B.); (R.M.D.)
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13
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Dömötör O, Teixeira RG, Spengler G, Avecilla F, Marques F, Lenis-Rojas OA, Matos CP, de Almeida RFM, Enyedy ÉA, Tomaz AI. Ruthenium(II) polypyridyl complexes with benzothiophene and benzimidazole derivatives: Synthesis, antitumor activity, solution studies and biospeciation. J Inorg Biochem 2023; 238:112058. [PMID: 36375357 DOI: 10.1016/j.jinorgbio.2022.112058] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/08/2022]
Abstract
With the aim to incorporate pharmacophore motifs into the Ru(II)-polypyridyl framework, compounds [Ru(II)(1,10-phenantroline)2(2-(2-pyridyl)benzo[b]thiophene)](CF3SO3)2 (1) and [Ru(II)(1,10-phenantroline)2(2-(2-pyridyl)benzimidazole)](CF3SO3)2 (2) were prepared, characterized and tested for their antitumor potential. The solid-state structure of the compounds was confirmed by single-crystal X-ray diffraction analysis. The solution behavior of both complexes was investigated, namely their solubility, stability, and lipophilicity in physiological mimetic conditions, as well as an eventual uptake by passive diffusion. In vitro anticancer activity of the complexes on ovarian and different colon cancer cells and apoptosis induction by the complexes were studied. A slow transformation process was observed for complex 1 in aqueous solution when exposed to sunlight, while complex 2 undergoes deprotonation (pKa = 7.59). The lipophilicity of this latter complex depends strongly on the pH and ionic strength. In contrast, 1 is rather hydrophilic under various conditions. Complex 1 was highly cytotoxic on Colo-205 human colon (IC50 = 7.87 μM) and A2780 ovarian (IC50 = 2.2 μM) adenocarcinoma cell lines, while 2 displayed moderate anticancer activity (30.9 μM and 18.0 μM, respectively). The complexes induced late apoptosis and necrosis. Only a weak binding of the complexes to human serum albumin, the main transport protein in blood serum, was found. However, a more significant binding to calf thymus DNA was observed in UV-visible titrations and fluorometric dye displacement studies. Detailed analysis of fluorescence lifetime data collected for the latter systems reveals not only the partial intercalation of the complexes, but goes beyond the usual simplified interpretations.
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Affiliation(s)
- Orsolya Dömötör
- Department of Inorganic and Analytical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, Dóm tér 7, H-6720 Szeged, Hungary; MTA-SZTE Lendület Functional Metal Complexes Research Group, University of Szeged, Dóm tér 7, H-6720 Szeged, Hungary.
| | - Ricardo G Teixeira
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1049-016 Lisboa, Portugal
| | - Gabriella Spengler
- MTA-SZTE Lendület Functional Metal Complexes Research Group, University of Szeged, Dóm tér 7, H-6720 Szeged, Hungary; Department of Medical Microbiology, Albert Szent-Györgyi Health Center and Albert Szent-Györgyi Medical School, University of Szeged, Semmelweis u. 6, H-6725 Szeged, Hungary
| | - Fernando Avecilla
- Universidade da Coruña, Grupo NanoToxGen, Centro de Investigacións Científicas Avanzadas (CICA), Departamento de Química, Facultade de Ciencias, Campus de A Coruña, 15071A Coruña, Spain
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares and Departamento de Ciências e Engenharia Nucleares, Instituto Superior Técnico, Universidade de Lisboa, EN 10 (km 139,7), 2695-066 Bobadela, Loures, Portugal
| | - Oscar A Lenis-Rojas
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1049-016 Lisboa, Portugal
| | - Cristina P Matos
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1049-016 Lisboa, Portugal
| | - Rodrigo F M de Almeida
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1049-016 Lisboa, Portugal
| | - Éva A Enyedy
- Department of Inorganic and Analytical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, Dóm tér 7, H-6720 Szeged, Hungary; MTA-SZTE Lendület Functional Metal Complexes Research Group, University of Szeged, Dóm tér 7, H-6720 Szeged, Hungary
| | - Ana Isabel Tomaz
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1049-016 Lisboa, Portugal.
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14
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Ferreira AC, Sousa N, Sousa JC, Marques F. Age-related changes in mice behavior and the contribution of lipocalin-2. Front Aging Neurosci 2023; 15:1179302. [PMID: 37168715 PMCID: PMC10164932 DOI: 10.3389/fnagi.2023.1179302] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 03/28/2023] [Indexed: 05/13/2023] Open
Abstract
Aging causes considerable changes in the nervous system, inducing progressive and long-lasting loss of physiological integrity and synaptic plasticity, leading to impaired brain functioning. These age-related changes quite often culminate in behavioral dysfunctions, such as impaired cognition, which can ultimately result in various forms of neurodegenerative disorders. Still, little is known regarding the effects of aging on behavior. Moreover, the identification of factors involved in regenerative plasticity, in both the young and aged brain, is scarce but crucial from a regenerative point of view and for our understanding on the mechanisms that control the process of normal aging. Recently, we have identified the iron-trafficking protein lipocalin-2 (LCN2) as novel regulator of animal behavior and neuronal plasticity in the young adult brain. On the other hand, others have proposed LCN2 as a biological marker for disease progression in neurodegenerative disorders such as Alzheimer's disease and multiple sclerosis. Still, and even though LCN2 is well accepted as a regulator of neural processes in the healthy and diseased brain, its contribution in the process of normal aging is not known. Here, we performed a broad analysis on the effects of aging in mice behavior, from young adulthood to middle and late ages (2-, 12-, and 18-months of age), and in the absence of LCN2. Significant behavioral differences between aging groups were observed in all the dimensions analyzed and, in mice deficient in LCN2, aging mainly reduced anxiety, while sustained depressive-like behavior observed at younger ages. These behavioral changes imposed by age were further accompanied by a significant decrease in cell survival and neuronal differentiation at the hippocampus. Our results provide insights into the role of LCN2 in the neurobiological processes underlying brain function and behavior attributed to age-related changes.
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Affiliation(s)
- Ana Catarina Ferreira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, Braga, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Nuno Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, Braga, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João Carlos Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, Braga, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, Braga, Portugal
- ICVS/3B’s—PT Government Associate Laboratory, Braga/Guimarães, Portugal
- *Correspondence: Fernanda Marques,
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Silva F, Mendes C, D'Onofrio A, Campello MPC, Marques F, Pinheiro T, Gonçalves K, Figueiredo S, Gano L, Ravera M, Gabano E, Paulo A. Image-Guided Nanodelivery of Pt(IV) Prodrugs to GRP-Receptor Positive Tumors. Nanotheranostics 2023; 7:22-40. [PMID: 36593794 PMCID: PMC9760368 DOI: 10.7150/ntno.78807] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 10/10/2022] [Indexed: 01/04/2023] Open
Abstract
Over the last decades, gold nanoparticles (AuNPs) have proven to be remarkable tools for drug delivery and theranostic applications in cancer treatment. On the other hand, Pt(IV) prodrugs have been employed as an interesting alternative to the more common Pt(II) complexes, such as cisplatin, for cancer chemotherapy. Searching to design an image-guided nanocarrier to deliver selectively Pt(IV) prodrugs to tumors expressing the gastrin releasing peptide receptor (GRPR), we have synthesized small core AuNPs carrying a thiolated DOTA derivative, a GRPR-targeting bombesin analog (BBN[7-14]) and a Pt(IV) prodrug attached to the AuNPs without (AuNP-BBN-Pt1) or with a PEGylated linker (AuNP-BBN-Pt2 and AuNP-BBN-Pt3). In the GRPR+ prostate cancer PC3 cell line, the cytotoxic activity of the designed AuNP-BBN-Pt nanoparticles is strongly influenced by the presence of the PEGylated linker. Thus, AuNP-BBN-Pt1 displayed the lowest IC50 value (9.3 ± 2.3 µM of Pt), which is comparable to that exhibited by cisplatin in the same cell line. In contrast, AuNP-BBN-Pt1 showed an IC50 value of 97 ± 18 µM of Pt in the non-tumoral RWPE-1 prostate cells with a much higher selective index (SI) towards PC3 cells (SI = 10) when compared with cisplatin (SI = 1.3). The AuNPs were also successfully labeled with 67Ga and the resulting 67Ga-AuNP-BBN-Pt were used to assess their cellular uptake in PC3 cells, with AuNP-BBN-Pt1 also displaying the highest cellular internalization. Finally, intratumoral administration of 67Ga-AuNP-BBN-Pt1 in a PC3 tumor-bearing mice showed a prolonged retention of the nanoparticle compared to that of cisplatin, with optimal in vivo stability and 20% of the injected platinum remaining in the tumor after 72 h post-injection. Furthermore, microSPECT imaging studies confirmed the uptake and considerable retention of the 67Ga-labeled AuNPs in the tumors. Overall, these results show the potential of these targeted AuNPs loaded with Pt(IV) prodrugs for prostate cancer theranostics.
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Affiliation(s)
- Francisco Silva
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal.,✉ Corresponding authors: António Paulo, E-mail: ; Francisco Silva, E-mail: , present address: Champalimaud Centre for the Unknown, Fundação Champalimaud, E-mail:
| | - Carolina Mendes
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
| | - Alice D'Onofrio
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
| | - Maria Paula Cabral Campello
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal.,Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Portugal
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal.,Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Portugal
| | - Teresa Pinheiro
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Portugal.,iBB - Instituto de Bioengenharia e Biociências, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Kyle Gonçalves
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
| | - Sérgio Figueiredo
- Institute for Systems and Robotics (ISR), LARSyS, Instituto Superior Técnico, Department of Bioengineering, Universidade de Lisboa, Portugal,H&TRC - Health &Technology Research Center, ESTeSL/IPL - Escola Superior de Tecnologia da Saúde de Lisboa/Instituto Politécnico de Lisboa, Portugal
| | - Lurdes Gano
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal.,Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Portugal
| | - Mauro Ravera
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, 15121 Alessandria, Italy
| | - Elisabetta Gabano
- Dipartimento per lo Sviluppo Sostenibile e la Transizione Ecologica, Università del Piemonte Orientale, Piazza Sant'Eusebio 5, 13100 Vercelli, Italy
| | - António Paulo
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal.,Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Portugal.,✉ Corresponding authors: António Paulo, E-mail: ; Francisco Silva, E-mail: , present address: Champalimaud Centre for the Unknown, Fundação Champalimaud, E-mail:
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16
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Nuez-Martínez M, Queralt-Martín M, Muñoz-Juan A, Aguilella VM, Laromaine A, Teixidor F, Viñas C, Pinto CG, Pinheiro T, Guerreiro JF, Mendes F, Roma-Rodrigues C, Baptista PV, Fernandes AR, Valic S, Marques F. Boron clusters (ferrabisdicarbollides) shaping the future as radiosensitizers for multimodal (chemo/radio/PBFR) therapy of glioblastoma. J Mater Chem B 2022; 10:9794-9815. [PMID: 36373493 DOI: 10.1039/d2tb01818g] [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: 11/07/2022]
Abstract
Glioblastoma multiforme (GBM) is the most common and fatal primary brain tumor, and is highly resistant to conventional radiotherapy and chemotherapy. Therefore, the development of multidrug resistance and tumor recurrence are frequent. Given the poor survival with the current treatments, new therapeutic strategies are urgently needed. Radiotherapy (RT) is a common cancer treatment modality for GBM. However, there is still a need to improve RT efficiency, while reducing the severe side effects. Radiosensitizers can enhance the killing effect on tumor cells with less side effects on healthy tissues. Herein, we present our pioneering study on the highly stable and amphiphilic metallacarboranes, ferrabis(dicarbollides) ([o-FESAN]- and [8,8'-I2-o-FESAN]-), as potential radiosensitizers for GBM radiotherapy. We propose radiation methodologies that utilize secondary radiation emissions from iodine and iron, using ferrabis(dicarbollides) as iodine/iron donors, aiming to achieve a greater therapeutic effect than that of a conventional radiotherapy. As a proof-of-concept, we show that using 2D and 3D models of U87 cells, the cellular viability and survival were reduced using this treatment approach. We also tested for the first time the proton boron fusion reaction (PBFR) with ferrabis(dicarbollides), taking advantage of their high boron (11B) content. The results from the cellular damage response obtained suggest that proton boron fusion radiation therapy, when combined with boron-rich compounds, is a promising modality to fight against resistant tumors. Although these results are encouraging, more developments are needed to further explore ferrabis(dicarbollides) as radiosensitizers towards a positive impact on the therapeutic strategies for GBM.
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Affiliation(s)
- Miquel Nuez-Martínez
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
| | - María Queralt-Martín
- Laboratory of Molecular Biophysics, Department of Physics, Universitat Jaume I, 12071 Castelló, Spain
| | - Amanda Muñoz-Juan
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
| | - Vicente M Aguilella
- Laboratory of Molecular Biophysics, Department of Physics, Universitat Jaume I, 12071 Castelló, Spain
| | - Anna Laromaine
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
| | - Catarina G Pinto
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal.
| | - Teresa Pinheiro
- iBB - Instituto de Bioengenharia e Biociências, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Joana F Guerreiro
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal.
| | - Filipa Mendes
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal.
| | - Catarina Roma-Rodrigues
- UCIBIO - Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal.,Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
| | - Pedro V Baptista
- UCIBIO - Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal.,Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
| | - Alexandra R Fernandes
- UCIBIO - Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal.,Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal
| | - Srecko Valic
- Ruđer Bošković Institute, Bijenička 54, HR-10000 Zagreb, Croatia
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal.
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Belchior A, Fernandes A, Lamotte M, da Silva AFF, Seixas RSGR, Silva AMS, Marques F. Exploring the Physical and Biological Aspects of BNCT with a Carboranylmethylbenzo[ b]acridone Compound in U87 Glioblastoma Cells. Int J Mol Sci 2022; 23:ijms232314929. [PMID: 36499256 PMCID: PMC9737597 DOI: 10.3390/ijms232314929] [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] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 12/02/2022] Open
Abstract
Boron neutron capture therapy (BNCT) is a re-emerging technique for selectively killing tumor cells. Briefly, the mechanism can be described as follows: after the uptake of boron into cells, the thermal neutrons trigger the fission of the boron atoms, releasing the α-particles and recoiling lithium particles and high-energy photons that damage the cells. We performed a detailed study of the reactor dosimetry, cellular dose assessment, and radiobiological effects induced by BNCT in glioblastoma (GBM) cells. At maximum reactor power, neutron fluence rates were ϕ0 = 6.6 × 107 cm−2 s−1 (thermal) and θ = 2.4 × 104 cm−2 s−1 with a photon dose rate of 150 mGy·h−1. These values agreed with simulations to within 85% (thermal neutrons), 78% (epithermal neutrons), and 95% (photons), thereby validating the MCNPX model. The GEANT4 simulations, based on a realistic cell model and measured boron concentrations, showed that >95% of the dose in cells was due to the BNC reaction. Carboranylmethylbenzo[b]acridone (CMBA) is among the different proposed boron delivery agents that has shown promising properties due to its lower toxicity and important cellular uptake in U87 glioblastoma cells. In particular, the results obtained for CBMA reinforce radiobiological effects demonstrating that damage is mostly induced by the incorporated boron with negligible contribution from the culture medium and adjacent cells, evidencing extranuclear cell radiosensitivity.
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Affiliation(s)
- Ana Belchior
- Centre for Nuclear Sciences and Technologies, Instituto Superior Técnico, Lisbon University, Nuclear and Technological Campus, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
| | - Ana Fernandes
- Centre for Nuclear Sciences and Technologies, Instituto Superior Técnico, Lisbon University, Nuclear and Technological Campus, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
- Department of Nuclear Sciences and Engineering, Instituto Superior Técnico, Lisbon University, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
| | - Maxime Lamotte
- Centre for Nuclear Sciences and Technologies, Instituto Superior Técnico, Lisbon University, Nuclear and Technological Campus, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
| | | | | | - Artur M. S. Silva
- Department of Chemistry QOPNA, Aveiro University, 3810-193 Aveiro, Portugal
| | - Fernanda Marques
- Centre for Nuclear Sciences and Technologies, Instituto Superior Técnico, Lisbon University, Nuclear and Technological Campus, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
- Department of Nuclear Sciences and Engineering, Instituto Superior Técnico, Lisbon University, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
- Correspondence:
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18
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Raposinho P, Silva F, D’Onofrio A, Mendes C, Campello MP, Oliveira MC, Belchior A, Marques F, Paulo A. Radiolabeled gold nanoseeds containing substance P peptides: synthesis, characterization and evaluation in glioblastoma cells. Nucl Med Biol 2022. [DOI: 10.1016/s0969-8051(22)02152-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Bevilacqua Rolfsen Ferreira da Silva G, Pereira das Neves S, Roque Oliveira SC, Marques F, Gomes de Oliveira A, de Lima Leite F, Cerqueira JJ. Comparative effectiveness of preventive treatment with dimethyl fumarate-loaded solid lipid nanoparticles and oral dimethyl fumarate in a mouse model of multiple sclerosis. J Autoimmun 2022; 132:102893. [PMID: 36029715 DOI: 10.1016/j.jaut.2022.102893] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/09/2022] [Accepted: 08/09/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND Orally administered dimethyl fumarate (DMF) presents gastrointestinal adverse effects, such as pain and diarrhea, in addition to flushing and lymphopenia. OBJECTIVE Solid lipid nanoparticles (SLNs) with DMF were developed for subcutaneous administration. METHODS DMF-incorporated SLNs and free DMF were tested in mice induced with experimental autoimmune encephalomyelitis (EAE). RESULTS Preventive treatment of free or incorporated DMF were able to reduce the EAE clinical scores, increase the weight of the animals, reduce the lesion area (demyelination and infiltration), reduce microglial fluorescence intensity and reduce the number of microglial cells and astrocytes, when compared to untreated EAE animals. Groups that received DMF had reduced numbers of T cells, B cells and natural killer (NK) cells in the blood, when compared to the non-induced group. CONCLUSIONS DMF incorporated in SLNs was as effective as free DMF in reducing the clinical scores of the animals, but with reduced administrations when given subcutaneously. In addition, SLN-DMF preventive treatment partially prevented a reduction in the percentages of T and B cells, in the blood, when compared to preventive treatment with free DMF (oral), which suggests reduction of lymphopenia.
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Affiliation(s)
- Gisela Bevilacqua Rolfsen Ferreira da Silva
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal; Nanoneurobiophysics Research Group, Department of Physics, Chemistry and Mathematics, Federal University of São Carlos (UFSCAR), Sorocaba, São Paulo, Brazil; São Paulo State University (UNESP), Department of Drugs and Medicines, Araraquara, São Paulo, Brazil.
| | - Sofia Pereira das Neves
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Susana Cristina Roque Oliveira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Anselmo Gomes de Oliveira
- São Paulo State University (UNESP), Department of Drugs and Medicines, Araraquara, São Paulo, Brazil
| | - Fábio de Lima Leite
- Nanoneurobiophysics Research Group, Department of Physics, Chemistry and Mathematics, Federal University of São Carlos (UFSCAR), Sorocaba, São Paulo, Brazil
| | - João José Cerqueira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
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20
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Costa JP, Pinheiro T, Martins MS, Carvalho MFNN, Feliciano JR, Leitão JH, Silva RAL, Guerreiro JF, Alves LMC, Custódio I, Cruz J, Marques F. Tuning the Biological Activity of Camphorimine Complexes through Metal Selection. Antibiotics (Basel) 2022; 11:antibiotics11081010. [PMID: 36009879 PMCID: PMC9405135 DOI: 10.3390/antibiotics11081010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 07/21/2022] [Accepted: 07/23/2022] [Indexed: 02/04/2023] Open
Abstract
The cytotoxic activity of four sets of camphorimine complexes based on the Cu(I), Cu(II), Ag(I), and Au(I) metal sites were assessed against the cisplatin-sensitive A2780 and OVCAR3 ovarian cancer cells. The results showed that the gold complexes were ca. one order of magnitude more active than the silver complexes, which in turn were ca. one order of magnitude more active than the copper complexes. An important finding was that the cytotoxic activity of the Ag(I) and Au(I) camphorimine complexes was higher than that of cisplatin. Another relevant aspect was that the camphorimine complexes did not interact significantly with DNA, in contrast with cisplatin. The cytotoxic activity of the camphorimine complexes displayed a direct relationship with the cellular uptake by OVCAR3 cells, as ascertained by PIXE (particle-induced X-ray emission). The levels of ROS (reactive oxygen species) formation exhibited an inverse relationship with the reduction potentials for the complexes with the same metal, as assessed by cyclic voltammetry. In order to gain insight into the toxicity of the complexes, their cytotoxicity toward nontumoral cells (HDF and V79 fibroblasts) was evaluated. The in vivo cytotoxicity of complex 5 using the nematode Caenorhabditis elegans was also assessed. The silver camphorimine complexes displayed the highest selectivity coefficients (activity vs. toxicity).
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Affiliation(s)
- Joana P. Costa
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal;
| | - Teresa Pinheiro
- IBB—Instituto de Bioengenharia e Biociências, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal;
| | - Maria S. Martins
- C2TN—Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (M.S.M.); (R.A.L.S.); (J.F.G.); (L.M.C.A.); (I.C.)
- Departamento de Física, NOVA School of Science and Technology FCT NOVA, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal;
| | - M. Fernanda N. N. Carvalho
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal;
- Correspondence: (M.F.N.N.C.); (F.M.)
| | - Joana R. Feliciano
- Department of Bioengineering, IBB—Institute for Bioengineering and Biosciences, Associate Laboratory, i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; (J.R.F.); (J.H.L.)
| | - Jorge H. Leitão
- Department of Bioengineering, IBB—Institute for Bioengineering and Biosciences, Associate Laboratory, i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; (J.R.F.); (J.H.L.)
| | - Rafaela A. L. Silva
- C2TN—Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (M.S.M.); (R.A.L.S.); (J.F.G.); (L.M.C.A.); (I.C.)
| | - Joana F. Guerreiro
- C2TN—Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (M.S.M.); (R.A.L.S.); (J.F.G.); (L.M.C.A.); (I.C.)
| | - Luís M. C. Alves
- C2TN—Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (M.S.M.); (R.A.L.S.); (J.F.G.); (L.M.C.A.); (I.C.)
| | - Inês Custódio
- C2TN—Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (M.S.M.); (R.A.L.S.); (J.F.G.); (L.M.C.A.); (I.C.)
- Departamento de Física, NOVA School of Science and Technology FCT NOVA, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal;
| | - João Cruz
- Departamento de Física, NOVA School of Science and Technology FCT NOVA, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal;
| | - Fernanda Marques
- C2TN—Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (M.S.M.); (R.A.L.S.); (J.F.G.); (L.M.C.A.); (I.C.)
- Correspondence: (M.F.N.N.C.); (F.M.)
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Morais TS, Marques F, Madeira PJA, Robalo MP, Garcia MH. Design and Anticancer Properties of New Water-Soluble Ruthenium–Cyclopentadienyl Complexes. Pharmaceuticals (Basel) 2022; 15:ph15070862. [PMID: 35890160 PMCID: PMC9321894 DOI: 10.3390/ph15070862] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 06/22/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 11/24/2022] Open
Abstract
Ruthenium complexes are emerging as one of the most promising classes of complexes for cancer therapy. However, their limited aqueous solubility may be the major limitation to their potential clinical application. In view and to contribute to the progress of this field, eight new water-soluble Ru(II) organometallic complexes of general formula [RuCp(mTPPMS)n(L)] [CF3SO3], where mTPPMS = diphenylphosphane-benzene-3-sulfonate, for n = 2, L is an imidazole-based ligand (imidazole, 1-benzylimidazole, 1-butylimidazole, (1-(3-aminopropyl)imidazole), and (1-(4-methoxyphenyl)imidazole)), and for n = 1, L is a bidentate heteroaromatic ligand (2-benzoylpyridine, (di(2-pyridyl)ketone), and (1,2-(2-pyridyl)benzo-[b]thiophene)) were synthesized and characterized. The new complexes were fully characterized by NMR, FT-IR, UV–vis., ESI-HRMS, and cyclic voltammetry, which confirmed all the proposed molecular structures. The antiproliferative potential of the new Ru(II) complexes was evaluated on MDAMB231 breast adenocarcinoma, A2780 ovarian carcinoma, and HT29 colorectal adenocarcinoma cell lines, showing micromolar (MDAMB231 and HT29) and submicromolar (A2780) IC50 values. The interaction of complex 6 with human serum albumin (HSA) and fatty-acid-free human serum albumin (HSAfaf) was evaluated by fluorescence spectroscopy techniques, and the results revealed that the ruthenium complex strongly quenches the intrinsic fluorescence of albumin in both cases.
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Affiliation(s)
- Tânia S. Morais
- Centro de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
- Correspondence: (T.S.M.); (M.H.G.)
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139,7), 2695-066 Lisboa, Portugal;
| | | | - Maria Paula Robalo
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
| | - Maria Helena Garcia
- Centro de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
- Correspondence: (T.S.M.); (M.H.G.)
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22
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Marques A, Belchior A, Silva F, Marques F, Campello MPC, Pinheiro T, Santos P, Santos L, Matos APA, Paulo A. Dose Rate Effects on the Selective Radiosensitization of Prostate Cells by GRPR-Targeted Gold Nanoparticles. Int J Mol Sci 2022; 23:ijms23095279. [PMID: 35563666 PMCID: PMC9105611 DOI: 10.3390/ijms23095279] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 05/02/2022] [Accepted: 05/05/2022] [Indexed: 12/14/2022] Open
Abstract
For a while, gold nanoparticles (AuNPs) have been recognized as potential radiosensitizers in cancer radiation therapy, mainly due to their physical properties, making them appealing for medical applications. Nevertheless, the performance of AuNPs as radiosensitizers still raises important questions that need further investigation. Searching for selective prostate (PCa) radiosensitizing agents, we studied the radiosensitization capability of the target-specific AuNP-BBN in cancer versus non-cancerous prostate cells, including the evaluation of dose rate effects in comparison with non-targeted counterparts (AuNP-TDOTA). PCa cells were found to exhibit increased AuNP uptake when compared to non-tumoral ones, leading to a significant loss of cellular proliferation ability and complex DNA damage, evidenced by the occurrence of multiple micronucleus per binucleated cell, in the case of PC3 cells irradiated with 2 Gy of γ-rays, after incubation with AuNP-BBN. Remarkably, the treatment of the PC3 cells with AuNP-BBN led to a much stronger influence of the dose rate on the cellular survival upon γ-photon irradiation, as well as on their genomic instability. Overall, AuNP-BBN emerged in this study as a very promising nanotool for the efficient and selective radiosensitization of human prostate cancer PC3 cells, therefore deserving further preclinical evaluation in adequate animal models for prostate cancer radiotherapy.
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Affiliation(s)
- Ana Marques
- Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisbon, Portugal;
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (F.M.); (M.P.C.C.); (P.S.); (A.P.)
| | - Ana Belchior
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (F.M.); (M.P.C.C.); (P.S.); (A.P.)
- Correspondence: (A.B.); (F.S.)
| | - Francisco Silva
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (F.M.); (M.P.C.C.); (P.S.); (A.P.)
- Correspondence: (A.B.); (F.S.)
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (F.M.); (M.P.C.C.); (P.S.); (A.P.)
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal;
| | - Maria Paula Cabral Campello
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (F.M.); (M.P.C.C.); (P.S.); (A.P.)
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal;
| | - Teresa Pinheiro
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal;
- Instituto de Bioengenharia e Biociências, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal
| | - Pedro Santos
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (F.M.); (M.P.C.C.); (P.S.); (A.P.)
| | - Luis Santos
- Laboratório de Metrologia, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal;
| | - António P. A. Matos
- Centro de Investigação Interdisciplinar Egas Moniz, Campus Universitário, Quinta da Granja, Monte de Caparica, 2829-511 Caparica, Portugal;
| | - António Paulo
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (F.M.); (M.P.C.C.); (P.S.); (A.P.)
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal;
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23
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Abdulghani S, Afonso Â, Castillo M, Martín-Fernández J, Franco I, Parreira B, Couto A, Bruges-Armas J, Rodrigues AM, Gonçalves A, Dias A, Toader I, Lopes A, Faria C, Marques F, Sousa JC, Silvestre R, Pereira P, Correia M, Maia L, Canhão H, Dias S. The Role of Biobanks in the Fight against COVID-19 Pandemic: The Portuguese Response. ACTA MEDICA PORT 2022; 35:411-415. [PMID: 35522822 DOI: 10.20344/amp.17856] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 11/20/2022]
Affiliation(s)
- Saba Abdulghani
- CHAIN Biobank. Comprehensive Health Research Center (CHRC). Lisbon; Chronic Diseases Research Centre (CEDOC). NOVA Medical School. Universidade NOVA de Lisboa. Lisbon. Portugal
| | - Ângela Afonso
- Biobanco-IMM. Instituto de Medicina Molecular. Faculdade de Medicina. Universidade de Lisboa. Lisbon. Portugal
| | - Mireia Castillo
- Champalimaud Foundation Biobank. Champalimaud Centre for the Unknown. Fundação Champalimaud. Lisbon. Portugal
| | - Javier Martín-Fernández
- Champalimaud Foundation Biobank. Champalimaud Centre for the Unknown. Fundação Champalimaud. Lisbon. Portugal
| | - Inês Franco
- Champalimaud Foundation Biobank. Champalimaud Centre for the Unknown. Fundação Champalimaud. Lisbon. Portugal
| | - Bruna Parreira
- Comprehensive Health Research Center (CHRC). NOVA Medical School. Universidade NOVA de Lisboa. Lisbon. Serviço Especializado de Epidemiologia e Biologia Molecular (SEEBMO). Hospital de Santo Espírito da Ilha Terceira (HSEIT). Azores. Portugal
| | - Ana Couto
- Comprehensive Health Research Center (CHRC). NOVA Medical School. Universidade NOVA de Lisboa. Lisbon. Serviço Especializado de Epidemiologia e Biologia Molecular (SEEBMO). Hospital de Santo Espírito da Ilha Terceira (HSEIT). Azores. Portugal
| | - Jácome Bruges-Armas
- Comprehensive Health Research Center (CHRC). NOVA Medical School. Universidade NOVA de Lisboa. Lisbon. Serviço Especializado de Epidemiologia e Biologia Molecular (SEEBMO). Hospital de Santo Espírito da Ilha Terceira (HSEIT). Azores. Portugal
| | - Ana Maria Rodrigues
- CHAIN Biobank. Comprehensive Health Research Center (CHRC). Lisbon. Chronic Diseases Research Centre (CEDOC). NOVA Medical School. Universidade NOVA de Lisboa. Lisbon. Portugal
| | - Ana Gonçalves
- i3S - Instituto de Investigação e Inovação em Saúde. University of Porto. Porto. Institute of Molecular Pathology and Immunology (Ipatimup). University of Porto. Porto. Portugal
| | - Alexandre Dias
- i3S - Instituto de Investigação e Inovação em Saúde. University of Porto. Porto. Institute of Molecular Pathology and Immunology (Ipatimup). University of Porto. Porto. Portugal
| | - Ionela Toader
- Biobanco-IMM. Instituto de Medicina Molecular. Faculdade de Medicina. Universidade de Lisboa. Lisbon. Portugal
| | - Andreia Lopes
- Biobanco-IMM. Instituto de Medicina Molecular. Faculdade de Medicina. Universidade de Lisboa. Lisbon. Portugal
| | - Cláudia Faria
- Biobanco-IMM. Instituto de Medicina Molecular. Faculdade de Medicina. Universidade de Lisboa. Lisbon. Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS). School of Medicine. University of Minho. Braga. ICVS/3B's - PT Government Associate Laboratory. Braga. Portugal
| | - João Carlos Sousa
- Life and Health Sciences Research Institute (ICVS). School of Medicine. University of Minho. Braga. ICVS/3B's - PT Government Associate Laboratory. Braga. Portugal
| | - Ricardo Silvestre
- Life and Health Sciences Research Institute (ICVS). School of Medicine. University of Minho. Braga. ICVS/3B's - PT Government Associate Laboratory. Braga. Portugal
| | - Paulo Pereira
- Chronic Diseases Research Centre (CEDOC). NOVA Medical School. Universidade NOVA de Lisboa. Lisbon. Portugal
| | - Manuel Correia
- Department of Neurology. Centro Hospitalar Universitário do Porto. Porto. Instituto de Ciências Biomédicas Abel Salazar. University of Porto. Porto. Portugal
| | - Luís Maia
- i3S - Instituto de Investigação e Inovação em Saúde. University of Porto. Porto. Department of Neurology. Centro Hospitalar Universitário do Porto. Porto. Instituto de Ciências Biomédicas Abel Salazar. University of Porto. Porto. Portugal
| | - Helena Canhão
- CHAIN Biobank. Comprehensive Health Research Center (CHRC). Lisbon. Chronic Diseases Research Centre (CEDOC). NOVA Medical School. Universidade NOVA de Lisboa. Lisbon. Portugal
| | - Sérgio Dias
- Biobanco-IMM. Instituto de Medicina Molecular. Faculdade de Medicina. Universidade de Lisboa. Lisbon. Portugal
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24
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Babeer A, Oh MJ, Ren Z, Liu Y, Marques F, Poly A, Karabucak B, Steager E, Koo H. Microrobotics for Precision Biofilm Diagnostics and Treatment. J Dent Res 2022; 101:1009-1014. [PMID: 35450484 PMCID: PMC9305841 DOI: 10.1177/00220345221087149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Advances in small-scale robotics and nanotechnology are providing previously unimagined opportunities for new diagnostic and therapeutic approaches with high precision, control, and efficiency. We designed microrobots for tetherless biofilm treatment and retrieval using iron oxide nanoparticles (NPs) with dual catalytic-magnetic functionality as building blocks. We show 2 distinct microrobotic platforms. The first system is formed from NPs that assemble into aggregated microswarms under magnetic fields that can be controlled to disrupt and retrieve biofilm samples for microbial analysis. The second platform is composed of 3-dimensional (3D) micromolded opacifier-infused soft helicoids with embedded catalytic-magnetic NPs that can be visualized via existing radiographic imaging techniques and controlled magnetically inside the root canal, uninterrupted by the soft and hard tissues surrounding the teeth in an ex vivo model. These microrobots placed inside the root canal can remove biofilms and be efficiently guided with microscale precision. The proof-of-concept paradigm described here can be adapted to target difficult-to-reach anatomical spaces in other natural and implanted surfaces in an automated and tether-free manner.
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Affiliation(s)
- A Babeer
- Biofilm Research Laboratories, Center for Innovation & Precision Dentistry, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Endodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Oral Biology, King Abdulaziz University, Jeddah, KSA
| | - M J Oh
- Biofilm Research Laboratories, Center for Innovation & Precision Dentistry, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Z Ren
- Biofilm Research Laboratories, Center for Innovation & Precision Dentistry, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Y Liu
- Biofilm Research Laboratories, Center for Innovation & Precision Dentistry, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Preventive & Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - F Marques
- Department of Endodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - A Poly
- Proclin Department, School of Dentistry, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - B Karabucak
- Department of Endodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - E Steager
- Biofilm Research Laboratories, Center for Innovation & Precision Dentistry, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,GRASP Laboratory, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, USA
| | - H Koo
- Biofilm Research Laboratories, Center for Innovation & Precision Dentistry, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
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25
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das Neves SP, Serre-Miranda C, Sousa JC, Costa P, Sousa N, Cerqueira JJ, Marques F. Lipocalin-2 does not influence EAE clinical score but it increases inflammation in central nervous system. J Neuroimmunol 2022; 368:577872. [DOI: 10.1016/j.jneuroim.2022.577872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 04/05/2022] [Accepted: 04/13/2022] [Indexed: 11/26/2022]
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26
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Silva F, D’Onofrio A, Mendes C, Pinto C, Marques A, Campello MPC, Oliveira MC, Raposinho P, Belchior A, Di Maria S, Marques F, Cruz C, Carvalho J, Paulo A. Radiolabeled Gold Nanoseeds Decorated with Substance P Peptides: Synthesis, Characterization and In Vitro Evaluation in Glioblastoma Cellular Models. Int J Mol Sci 2022; 23:ijms23020617. [PMID: 35054798 PMCID: PMC8775581 DOI: 10.3390/ijms23020617] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 12/31/2021] [Accepted: 01/03/2022] [Indexed: 02/07/2023] Open
Abstract
Despite some progress, the overall survival of patients with glioblastoma (GBM) remains extremely poor. In this context, there is a pressing need to develop innovative therapy strategies for GBM, namely those based on nanomedicine approaches. Towards this goal, we have focused on nanoparticles (AuNP-SP and AuNP-SPTyr8) with a small gold core (ca. 4 nm), carrying DOTA chelators and substance P (SP) peptides. These new SP-containing AuNPs were characterized by a variety of analytical techniques, including TEM and DLS measurements and UV-vis and CD spectroscopy, which proved their high in vitro stability and poor tendency to interact with plasma proteins. Their labeling with diagnostic and therapeutic radionuclides was efficiently performed by DOTA complexation with the trivalent radiometals 67Ga and 177Lu or by electrophilic radioiodination with 125I of the tyrosyl residue in AuNP-SPTyr8. Cellular studies of the resulting radiolabeled AuNPs in NKR1-positive GBM cells (U87, T98G and U373) have shown that the presence of the SP peptides has a crucial and positive impact on their internalization by the tumor cells. Consistently, 177Lu-AuNP-SPTyr8 showed more pronounced radiobiological effects in U373 cells when compared with the non-targeted congener 177Lu-AuNP-TDOTA, as assessed by cell viability and clonogenic assays and corroborated by Monte Carlo microdosimetry simulations.
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Affiliation(s)
- Francisco Silva
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (A.D.); (C.M.); (C.P.); (A.M.); (M.P.C.C.); (M.C.O.); (P.R.); (A.B.); (S.D.M.); (F.M.)
- Correspondence: (F.S.); (A.P.)
| | - Alice D’Onofrio
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (A.D.); (C.M.); (C.P.); (A.M.); (M.P.C.C.); (M.C.O.); (P.R.); (A.B.); (S.D.M.); (F.M.)
| | - Carolina Mendes
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (A.D.); (C.M.); (C.P.); (A.M.); (M.P.C.C.); (M.C.O.); (P.R.); (A.B.); (S.D.M.); (F.M.)
| | - Catarina Pinto
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (A.D.); (C.M.); (C.P.); (A.M.); (M.P.C.C.); (M.C.O.); (P.R.); (A.B.); (S.D.M.); (F.M.)
| | - Ana Marques
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (A.D.); (C.M.); (C.P.); (A.M.); (M.P.C.C.); (M.C.O.); (P.R.); (A.B.); (S.D.M.); (F.M.)
| | - Maria Paula Cabral Campello
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (A.D.); (C.M.); (C.P.); (A.M.); (M.P.C.C.); (M.C.O.); (P.R.); (A.B.); (S.D.M.); (F.M.)
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
| | - Maria Cristina Oliveira
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (A.D.); (C.M.); (C.P.); (A.M.); (M.P.C.C.); (M.C.O.); (P.R.); (A.B.); (S.D.M.); (F.M.)
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
| | - Paula Raposinho
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (A.D.); (C.M.); (C.P.); (A.M.); (M.P.C.C.); (M.C.O.); (P.R.); (A.B.); (S.D.M.); (F.M.)
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
| | - Ana Belchior
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (A.D.); (C.M.); (C.P.); (A.M.); (M.P.C.C.); (M.C.O.); (P.R.); (A.B.); (S.D.M.); (F.M.)
| | - Salvatore Di Maria
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (A.D.); (C.M.); (C.P.); (A.M.); (M.P.C.C.); (M.C.O.); (P.R.); (A.B.); (S.D.M.); (F.M.)
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (A.D.); (C.M.); (C.P.); (A.M.); (M.P.C.C.); (M.C.O.); (P.R.); (A.B.); (S.D.M.); (F.M.)
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
| | - Carla Cruz
- CICS-UBI-Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; (C.C.); (J.C.)
| | - Josué Carvalho
- CICS-UBI-Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; (C.C.); (J.C.)
| | - António Paulo
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal; (A.D.); (C.M.); (C.P.); (A.M.); (M.P.C.C.); (M.C.O.); (P.R.); (A.B.); (S.D.M.); (F.M.)
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
- Correspondence: (F.S.); (A.P.)
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Abstract
The contamination of water and food in agricultural areas, where an enormous volume of pesticides is widely employed to enhance crop production, is a challenging reality. The rapid assessment of these contaminants is fundamental to assure water and food quality and safety, particularly for local community members. This work presents a nonexpensive and easy-operational paper-based testing device for the fast detection of insecticides (carbamates and organophosphates) in water samples. The structural design "dip-and-fold" allows us to carry out the analysis without introducing reagents or samples. The device is prepared using different high-quality papers to support the active acetylcholinesterase (AChE) and the customized chemical formulation for colorimetric detection. The chemical principle is based on the AChE inhibition reaction and Ellman's method. The experiments using standard solutions of carbofuran, propoxur, and chlorpyriphos indicated satisfactory detection at concentrations between 0.1 and 0.0001 mM, and the color results are revealed within 10 min. Therefore, this technique represents a promising alternative for implementing low-cost and efficient water monitoring and management solutions.
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Affiliation(s)
- Fernanda Marques
- Micro & Nano-scale Transport Laboratory, Waterloo Institute for Nanotechnology, Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Sushanta K Mitra
- Micro & Nano-scale Transport Laboratory, Waterloo Institute for Nanotechnology, Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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28
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Nuez-Martinez M, Pinto CIG, Guerreiro JF, Mendes F, Marques F, Muñoz-Juan A, Xavier JAM, Laromaine A, Bitonto V, Protti N, Crich SG, Teixidor F, Viñas C. Cobaltabis(dicarbollide) ([ o-COSAN] -) as Multifunctional Chemotherapeutics: A Prospective Application in Boron Neutron Capture Therapy (BNCT) for Glioblastoma. Cancers (Basel) 2021; 13:6367. [PMID: 34944987 PMCID: PMC8699431 DOI: 10.3390/cancers13246367] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/10/2021] [Accepted: 12/16/2021] [Indexed: 12/12/2022] Open
Abstract
PURPOSE The aim of our study was to assess if the sodium salt of cobaltabis(dicarbollide) and its di-iodinated derivative (Na[o-COSAN] and Na[8,8'-I2-o-COSAN]) could be promising agents for dual anti-cancer treatment (chemotherapy + BNCT) for GBM. METHODS The biological activities of the small molecules were evaluated in vitro with glioblastoma cells lines U87 and T98G in 2D and 3D cell models and in vivo in the small model animal Caenorhabditis elegans (C. elegans) at the L4-stage and using the eggs. RESULTS Our studies indicated that only spheroids from the U87 cell line have impaired growth after treatment with both compounds, suggesting an increased resistance from T98G spheroids, contrary to what was observed in the monolayer culture, which highlights the need to employ 3D models for future GBM studies. In vitro tests in U87 and T98G cells conclude that the amount of 10B inside the cells is enough for BNCT irradiation. BNCT becomes more effective on T98G after their incubation with Na[8,8'-I2-o-COSAN], whereas no apparent cell-killing effect was observed for untreated cells. CONCLUSIONS These small molecules, particularly [8,8'-I2-o-COSAN]-, are serious candidates for BNCT now that the facilities of accelerator-based neutron sources are more accessible, providing an alternative treatment for resistant glioblastoma.
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Affiliation(s)
- Miquel Nuez-Martinez
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Catarina I. G. Pinto
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (C.I.G.P.); (J.F.G.); (F.M.); (F.M.)
| | - Joana F. Guerreiro
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (C.I.G.P.); (J.F.G.); (F.M.); (F.M.)
| | - Filipa Mendes
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (C.I.G.P.); (J.F.G.); (F.M.); (F.M.)
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela, Portugal; (C.I.G.P.); (J.F.G.); (F.M.); (F.M.)
| | - Amanda Muñoz-Juan
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Jewel Ann Maria Xavier
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Anna Laromaine
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Valeria Bitonto
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (V.B.); (S.G.C.)
| | | | - Simonetta Geninatti Crich
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy; (V.B.); (S.G.C.)
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain; (M.N.-M.); (A.M.-J.); (J.A.M.X.); (A.L.); (F.T.)
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Schlagintweit JF, Jakob CHG, Wilke NL, Ahrweiler M, Frias C, Frias J, König M, Esslinger EMHJ, Marques F, Machado JF, Reich RM, Morais TS, Correia JDG, Prokop A, Kühn FE. Gold(I) Bis(1,2,3-triazol-5-ylidene) Complexes as Promising Selective Anticancer Compounds. J Med Chem 2021; 64:15747-15757. [PMID: 34670090 DOI: 10.1021/acs.jmedchem.1c01021] [Citation(s) in RCA: 4] [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: 01/07/2023]
Abstract
The synthesis and antiproliferative activity of Mes- and iPr-substituted gold(I) bis(1,2,3-triazol-5-ylidene) complexes in various cancer cell lines are reported, showing nanomolar IC50 values of 50 nM (lymphoma cells) and 500 nM (leukemia cells), respectively (Mes < iPr). The compounds exclusively induce apoptosis (50 nM to 5 μM) instead of necrosis in common malignant blood cells (leukemia cells) and do not affect non-malignant leucocytes. Remarkably, the complexes not only overcome resistances against the well-established cytostatic etoposide, cytarabine, daunorubicin, and cisplatin but also promote a synergistic effect of up to 182% when used with daunorubicin. The present results demonstrate that gold(I) bis(1,2,3-triazol-5-ylidene) complexes are highly promising and easily modifiable anticancer metallodrugs.
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Affiliation(s)
- Jonas F Schlagintweit
- Molecular Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, Garching bei München D-85748, Germany
| | - Christian H G Jakob
- Molecular Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, Garching bei München D-85748, Germany
| | - Nicola L Wilke
- Department of Pediatric Hematology/Oncology, Children's Hospital Cologne, Amsterdamer Straße 59, Cologne 50735, Germany.,Department of Pediatric Oncology/Hematology, Helios Clinics Schwerin, Wismarsche Straße 393-397, 19049 Schwerin, Germany.,MSH Medical School Hamburg, Am Kaiserkai 1, 20457 Hamburg, Germany
| | - Marie Ahrweiler
- Department of Pediatric Hematology/Oncology, Children's Hospital Cologne, Amsterdamer Straße 59, Cologne 50735, Germany.,Department of Pediatric Oncology/Hematology, Helios Clinics Schwerin, Wismarsche Straße 393-397, 19049 Schwerin, Germany
| | - Corazon Frias
- Department of Pediatric Hematology/Oncology, Children's Hospital Cologne, Amsterdamer Straße 59, Cologne 50735, Germany.,Department of Pediatric Oncology/Hematology, Helios Clinics Schwerin, Wismarsche Straße 393-397, 19049 Schwerin, Germany.,MSH Medical School Hamburg, Am Kaiserkai 1, 20457 Hamburg, Germany
| | - Jerico Frias
- Department of Pediatric Hematology/Oncology, Children's Hospital Cologne, Amsterdamer Straße 59, Cologne 50735, Germany.,Department of Pediatric Oncology/Hematology, Helios Clinics Schwerin, Wismarsche Straße 393-397, 19049 Schwerin, Germany.,MSH Medical School Hamburg, Am Kaiserkai 1, 20457 Hamburg, Germany
| | - Marcel König
- Department of Pediatric Hematology/Oncology, Children's Hospital Cologne, Amsterdamer Straße 59, Cologne 50735, Germany
| | - Eva-Maria H J Esslinger
- Molecular Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, Garching bei München D-85748, Germany
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, CTN, Estrada Nacional 10 (km 139,7), Bobadela LRS 2695-066, Portugal
| | - João F Machado
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, CTN, Estrada Nacional 10 (km 139,7), Bobadela LRS 2695-066, Portugal.,Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - Robert M Reich
- Molecular Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, Garching bei München D-85748, Germany
| | - Tânia S Morais
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - João D G Correia
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, CTN, Estrada Nacional 10 (km 139,7), Bobadela LRS 2695-066, Portugal
| | - Aram Prokop
- Department of Pediatric Hematology/Oncology, Children's Hospital Cologne, Amsterdamer Straße 59, Cologne 50735, Germany.,Department of Pediatric Oncology/Hematology, Helios Clinics Schwerin, Wismarsche Straße 393-397, 19049 Schwerin, Germany.,MSH Medical School Hamburg, Am Kaiserkai 1, 20457 Hamburg, Germany
| | - Fritz E Kühn
- Molecular Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, Garching bei München D-85748, Germany
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30
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Marques F, Pinto L, Azevedo MM, Sampaio-Marques B, Areias AC, Salgueira A, Costa MJ, Rodrigues F, Ludovico P. Innovative, integrative, and interactive in-class activity on metabolic regulation: Evaluating educational impacts. Biochem Mol Biol Educ 2021; 49:870-881. [PMID: 34406714 DOI: 10.1002/bmb.21569] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 05/03/2021] [Accepted: 07/29/2021] [Indexed: 06/13/2023]
Abstract
Medical students tend to have difficulties in developing a holistic view of metabolic pathway and hormone regulation. To address this issue, an interactive activity was implemented for first-year medical students at the School of Medicine, University of Minho, Portugal. Students' previous knowledge on metabolic pathways was evaluated by a pre-test followed by an interactive activity. In the supervised activity, students were challenged to elaborate a diagrammatic representation regarding enzymes, co-factors, and hormonal metabolic regulation in early fasting during the night, as well as in well-fed conditions. The activity was concluded with a post-test to determine the students' learning gains and a few days later students were evaluated by a final exam. Afterwards, students evaluated the activity by filling a questionnaire. Results from four different cohorts showed that the activity resulted in significant learning gains, particularly favoring students who have less prior knowledge. The comparison between the pre-test and the final exam also revealed significant learning gains for low achievers students. On the questionnaires, the majority of the students rated the activity as good or very good. Students agreed that this activity promotes: (a) reactivation of previous knowledge; (b) a better understanding of the interconnections between the metabolic pathways; (c) the application of learned concepts in real scenarios; and (d) sharing knowledge with peers. This study describes an active, unpretentious, and easily implemented activity available for early medical and biochemical curricula.
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Affiliation(s)
- Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
| | - Luísa Pinto
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
| | | | - Belém Sampaio-Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
| | - Anabela C Areias
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
| | - Ana Salgueira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
| | - Manuel Joao Costa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
| | - Fernando Rodrigues
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
| | - Paula Ludovico
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
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31
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Fontinha D, Sousa SA, Morais TS, Prudêncio M, Leitão JH, Le Gal Y, Lorcy D, Silva RAL, Velho MFG, Belo D, Almeida M, Guerreiro JF, Pinheiro T, Marques F. Gold(iii) bis(dithiolene) complexes: from molecular conductors to prospective anticancer, antimicrobial and antiplasmodial agents. Metallomics 2021; 12:974-987. [PMID: 32391537 DOI: 10.1039/d0mt00064g] [Citation(s) in RCA: 16] [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: 12/19/2022]
Abstract
The anticancer, antimicrobial and antiplasmodial activities of six gold(iii) bis(dithiolene) complexes were studied. Complexes 1-6 showed relevant anticancer properties against A2780/A2780cisR ovarian cancer cells (IC50 values of 0.08-2 μM), also being able to overcome cisplatin resistance in A2780cisR cells. Complex 1 also exhibited significant antimicrobial activity against Staphylococcus aureus (minimum inhibitory concentration (MIC) values of 12.1 ± 3.9 μg mL-1) and both Candida glabrata and Candida albicans (MICs of 9.7 ± 2.7 and 19.9 ± 2.4 μg mL-1, respectively). In addition, all complexes displayed antiplasmodial activity against the Plasmodium berghei parasite liver stages, even exhibiting better results than the ones obtained using primaquine, an anti-malarial drug. Mechanistic studies support the idea that thioredoxin reductase, but not DNA, is a possible target of these complexes. Complex 1 is stable under biological conditions, which would be important if this compound is ever to be considered as a drug. Overall, the results obtained evidenced the promising biological activity of complex 1, which might have potential as a novel anticancer, antimicrobial and antiplasmodial agent to be used as an alternative to current therapeutics.
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Affiliation(s)
- Diana Fontinha
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Sílvia A Sousa
- iBB-Institute for Bioengineering and Biosciences, Departmento de Bioengenharia, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Tânia S Morais
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Miguel Prudêncio
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Jorge H Leitão
- iBB-Institute for Bioengineering and Biosciences, Departmento de Bioengenharia, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Yann Le Gal
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Dominique Lorcy
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France
| | - Rafaela A L Silva
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139,7), 2695-066 Bobadela LRS, Portugal.
| | - Mariana F G Velho
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139,7), 2695-066 Bobadela LRS, Portugal. and Instituto de Telecomunicações, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001, Lisboa, Portugal
| | - Dulce Belo
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139,7), 2695-066 Bobadela LRS, Portugal.
| | - M Almeida
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139,7), 2695-066 Bobadela LRS, Portugal.
| | - Joana F Guerreiro
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139,7), 2695-066 Bobadela LRS, Portugal.
| | - Teresa Pinheiro
- iBB-Institute for Bioengineering and Biosciences, Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Fernanda Marques
- 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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Rudbari HA, Saadati A, Aryaeifar M, Correia I, Marques F, Blacque O, Micale N. Cytotoxic oxidovanadium(IV) complexes of tridentate halogen-substituted Schiff bases: First dinuclear V(IV) complexes with O → V IV = O → V IV = O core. Bioorg Med Chem Lett 2021; 49:128285. [PMID: 34303813 DOI: 10.1016/j.bmcl.2021.128285] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/26/2021] [Accepted: 07/19/2021] [Indexed: 11/16/2022]
Abstract
The reaction of potentially N,N,O-tridentate Schiff base ligands, Cl-LH, Br-LH, BrCl-LH and H-LH, with [VIVO(acac)2] in 2:1 ratio in methanol gave the corresponding mononuclear and dinuclear oxidovanadium(IV) complexes, VO(Cl-L)2 (1), VO(Br-L)2 (2), [(BrCl-L)2(H2O)V(μ-O)VO(BrCl-L)2] (3) and [(H-L)2(H2O)V(μ -O)VO(H-L)2] (4), in good yields. The ligands and complexes were fully characterized by elemental analysis and FT-IR spectroscopy. The ligands were also characterized by 1H NMR spectroscopy. The oxidation state of V(IV)O with d1 configuration in all synthesized complexes was confirmed by EPR. Moreover, the structures of 2 and 3 were determined by X-ray diffraction (XRD) analysis which revealed them as mono- and dinuclear vanadium(IV) complexes, respectively, with the ligands coordinated as bidentate chelates. The structure of 3 represents the first example of dinuclear V(IV) complex with O → VIV = O → VIV = O core (Cambridge Structural Database (CSD), version 5.42, update of May 2021). The cytotoxicity of ligands and complexes was evaluated towards ovarian (A2780), breast (MCF7) and prostate (PC3) cancer cells at 48 h. While ligands showed modest IC50 values (>42 μM), all complexes turned out to be effective in the range 3.9-17.2 μM. In particular, A2780 and MCF7 cell lines were the most sensitive to the newly synthesized V(IV)O complexes.
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Affiliation(s)
- Hadi Amiri Rudbari
- Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran.
| | - Arezoo Saadati
- Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran
| | - Mahnaz Aryaeifar
- Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran
| | - Isabel Correia
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, km 139.7, 2695-066 Bobadela LRS, Portugal
| | - Olivier Blacque
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Nicola Micale
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, I-98166 Messina, Italy
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das Neves SP, Taipa R, Marques F, Soares Costa P, Monárrez-Espino J, Palha JA, Kivipelto M. Association Between Iron-Related Protein Lipocalin 2 and Cognitive Impairment in Cerebrospinal Fluid and Serum. Front Aging Neurosci 2021; 13:663837. [PMID: 34248600 PMCID: PMC8267056 DOI: 10.3389/fnagi.2021.663837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 02/03/2021] [Accepted: 04/30/2021] [Indexed: 11/24/2022] Open
Abstract
A worldwide increase in longevity is bringing novel challenges to public health and health care professionals. Cognitive impairment in the elderly may compromise living conditions and precede Alzheimer’s disease (AD), the most prevalent form of dementia. Therefore, finding molecular markers associated with cognitive impairment is of crucial importance. Lipocalin 2 (LCN2), an iron-related protein, has been suggested as a potential marker for mild cognitive impairment (MCI) and AD. This study aimed at investigating the association between LCN2 measured in serum and cerebrospinal fluid (CSF) with cognitive impairment. A cross-sectional design based on two aging cohorts was used: individuals diagnosed with subjective cognitive complaints (SCC), MCI, and AD from a Swedish memory clinic-based cohort, and individuals diagnosed with SCC and AD from a Portuguese cohort. Binary logistic [for the outcome cognitive impairment (MCI + AD) in the Swedish cohort and AD in the Portuguese cohort] and multinomial logistic (for the outcomes MCI and AD) regression analyses were used. No associations were found in both cohorts when controlling for sex, education, and age. This explanatory study suggests that the association between serum and CSF LCN2 concentrations with cognitive impairment reported in the literature must be further analyzed for confounders.
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Affiliation(s)
- Sofia Pereira das Neves
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Ricardo Taipa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal.,Department of Neurosciences, Centro Hospitalar do Porto, Porto, Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Patrício Soares Costa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Joel Monárrez-Espino
- Department of Health Research, Christus Muguerza Hospital-University of Monterrey, Chihuahua, Mexico
| | - Joana A Palha
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Miia Kivipelto
- Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden.,Theme Aging, Karolinska University Hospital, Stockholm, Sweden
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Cudalbeanu M, Peitinho D, Silva F, Marques R, Pinheiro T, Ferreira AC, Marques F, Paulo A, Soeiro CF, Sousa SA, Leitão JH, Tăbăcaru A, Avramescu SM, Dinica RM, Campello MPC. Sono-Biosynthesis and Characterization of AuNPs from Danube Delta Nymphaea alba Root Extracts and Their Biological Properties. Nanomaterials (Basel) 2021; 11:1562. [PMID: 34198512 PMCID: PMC8231883 DOI: 10.3390/nano11061562] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/10/2021] [Accepted: 06/11/2021] [Indexed: 01/03/2023]
Abstract
Root extracts from Danube Delta Nymphaea alba were used to prepare gold nanoparticles (AuNPRn) by reducing HAuCl4 at different pHs (6.4-8.4) using ultrasonic irradiation: an easy, cheap, eco-friendly and green approach. Their antibacterial and anticancer activities were evaluated against Staphylococcus aureus and Escherichia coli, and A2780 ovarian cancer cells, respectively. The AuNPRn were characterized concerning their phytoconstituents (polyphenols, flavonoids and condensed tannins) and gold content. All of the nanoparticles were negatively charged. AuNPRn exhibited a hydrodynamic size distribution ranging from 32 nm to 280 nm, with the larger nanoparticles being obtained with an Au/root extract ratio of 0.56, pH 7 and 10 min of sonication (AuNPR1), whereas the smallest were obtained with an Au/root extract ratio of 0.24, pH 7.8 and 40 min of sonication (AuNPR4). The TEM/SEM images showed that the AuNPRn had different shapes. The ATR-FTIR indicated that AuNPRn interact mainly with hydroxyl groups present in the polyphenol compounds, which also confirm their high antioxidant capacity, except for AuNPR2 obtained at pH 6.4. Among the AuNPRn, the smallest ones exhibited enhanced antimicrobial and anticancer activities.
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Affiliation(s)
- Mihaela Cudalbeanu
- Faculty of Sciences and Environment, Department of Chemistry Physical and Environment, “Dunărea de Jos” University of Galati, 111 Domnească Street, 800201 Galati, Romania; (M.C.); (A.T.)
- Research Center for Environmental Protection and Waste Management, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania;
| | - David Peitinho
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela, Portugal; (D.P.); (F.S.); (R.M.); (F.M.); (A.P.)
| | - Francisco Silva
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela, Portugal; (D.P.); (F.S.); (R.M.); (F.M.); (A.P.)
| | - Rosa Marques
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela, Portugal; (D.P.); (F.S.); (R.M.); (F.M.); (A.P.)
- Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela, Portugal;
| | - Teresa Pinheiro
- Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela, Portugal;
- Department of Bioengineering, iBB-Institute of Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (C.F.S.); (S.A.S.); (J.H.L.)
| | - Ana C. Ferreira
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela, Portugal;
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela, Portugal; (D.P.); (F.S.); (R.M.); (F.M.); (A.P.)
- Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela, Portugal;
| | - António Paulo
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela, Portugal; (D.P.); (F.S.); (R.M.); (F.M.); (A.P.)
- Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela, Portugal;
| | - Catarina F. Soeiro
- Department of Bioengineering, iBB-Institute of Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (C.F.S.); (S.A.S.); (J.H.L.)
| | - Sílvia Andreia Sousa
- Department of Bioengineering, iBB-Institute of Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (C.F.S.); (S.A.S.); (J.H.L.)
| | - Jorge Humberto Leitão
- Department of Bioengineering, iBB-Institute of Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (C.F.S.); (S.A.S.); (J.H.L.)
| | - Aurel Tăbăcaru
- Faculty of Sciences and Environment, Department of Chemistry Physical and Environment, “Dunărea de Jos” University of Galati, 111 Domnească Street, 800201 Galati, Romania; (M.C.); (A.T.)
| | - Sorin Marius Avramescu
- Research Center for Environmental Protection and Waste Management, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania;
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 90-92 Soseaua Panduri, 050663 Bucharest, Romania
| | - Rodica Mihaela Dinica
- Faculty of Sciences and Environment, Department of Chemistry Physical and Environment, “Dunărea de Jos” University of Galati, 111 Domnească Street, 800201 Galati, Romania; (M.C.); (A.T.)
| | - Maria Paula Cabral Campello
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Campus Tecnológico e Nuclear, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela, Portugal; (D.P.); (F.S.); (R.M.); (F.M.); (A.P.)
- Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela, Portugal;
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Pinheiro MJF, Costa JP, Marques F, Mira NP, Carvalho MFNN, Alves MM. Bioactive Coatings with Ag-Camphorimine Complexes to Prevent Surface Colonization by the Pathogenic Yeast Candida albicans. Antibiotics (Basel) 2021; 10:antibiotics10060638. [PMID: 34073375 PMCID: PMC8227220 DOI: 10.3390/antibiotics10060638] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/22/2021] [Accepted: 05/25/2021] [Indexed: 01/08/2023] Open
Abstract
Currently there is a gap between the rate of new antifungal development and the emergence of resistance among Candida clinical strains, particularly threatened by the extreme adhesiveness of C. albicans to indwelling medical devices. Two silver camphorimine complexes, [Ag(OH){OC10H14N(C6H4)2NC10H14O}] (compound P) and [{Ag(OC10H14NC6H4CH3-p)}2(μ-O)] (compound Q), are herein demonstrated as having high inhibiting activity towards the growth of Candida albicans and Candida glabrata clinical strains resistant to azoles, the frontline antifungals used in clinical practice. Compounds P and Q were also explored as bioactive coatings to prevent colonization by C. albicans and colonize the surface of indwelling medical devices, resulting in persistent infections. Functionalization of stainless steel with polycaprolactone (PCL) matrix embedded with compounds P or Q was reported for the first time to inhibit the colonization of C. albicans by 82% and 75%, respectively. The coating of PCL loaded with Q or P did not cause cytotoxic effects in mammalian cells, demonstrating the biocompatibility of the explored approach. The identification and further exploration of new approaches for surface engineering based on new molecules that can sensitize resistant strains, as herein demonstrated for complexes P and Q, is a significant step forward to improve the successful treatment of candidiasis.
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Affiliation(s)
- M. Joana F. Pinheiro
- Department of Bioengineering, Instituto de Bioengenharia e Biociências (iBB), Instituto Superior Técnico, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal;
| | - Joana P. Costa
- Centro de Química Estrutural (CQE), Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares (CTN), Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10 (km 139,7), 2695-066 Bobadela LRS, Portugal;
| | - Nuno P. Mira
- Department of Bioengineering, Instituto de Bioengenharia e Biociências (iBB), Instituto Superior Técnico, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal;
- Correspondence: (N.P.M.); (M.F.N.N.C.); (M.M.A.)
| | - M. Fernanda N. N. Carvalho
- Centro de Química Estrutural (CQE), Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
- Correspondence: (N.P.M.); (M.F.N.N.C.); (M.M.A.)
| | - Marta M. Alves
- Centro de Química Estrutural (CQE), Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
- Correspondence: (N.P.M.); (M.F.N.N.C.); (M.M.A.)
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Raposo-Lima C, Pereira IM, Marques F, Morgado P. Elevated levels of neutrophil gelatinase-associated lipocalin among OCD patients: an exploratory study. BMC Psychiatry 2021; 21:272. [PMID: 34039300 PMCID: PMC8152153 DOI: 10.1186/s12888-021-03289-w] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 03/30/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Obsessive-compulsive disorder (OCD) is a debilitating psychiatric disease that is characterized by its clinical heterogeneity and complex pathophysiology. This complexity comes from the diversity of pathophysiological factors that have been proposed to be involved in the natural history of the disorder. Many theories on OCD pathology support inflammation as a pathophysiological factor, although studies are not consistent on the presence of a pro-inflammatory state among OCD patients. However, some pre-clinical animal studies suggest lipocalin-2 (LCN2), an analogous form of the acute-phase pro-inflammatory protein neutrophil gelatinase-associated lipocalin (NGAL), may be involved in in the regulation of the stress response, which is thought to be disrupted in OCD. METHODS Twenty-one OCD patients and 19 healthy subjects participated in this exploratory study. Levels of NGAL were assessed in the peripherous blood of all participants. Severity of disease was assessed using the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS). RESULTS OCD patients exhibited significantly higher levels of NGAL when compared to healthy control subjects. No correlation was found between elevated levels of NGAL and severity of symptoms. CONCLUSIONS This is the first study to report elevated levels of NGAL among OCD patients, adding evidence for a possible role of immune dysregulation in the pathophysiology of OCD.
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Affiliation(s)
- Catarina Raposo-Lima
- grid.10328.380000 0001 2159 175XLife and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal ,grid.10328.380000 0001 2159 175XICVS-3Bs PT Government Associate Laboratory, Braga, Guimarães Portugal
| | - Inês Miguel Pereira
- grid.10328.380000 0001 2159 175XLife and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal ,grid.10328.380000 0001 2159 175XICVS-3Bs PT Government Associate Laboratory, Braga, Guimarães Portugal
| | - Fernanda Marques
- grid.10328.380000 0001 2159 175XLife and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal ,grid.10328.380000 0001 2159 175XICVS-3Bs PT Government Associate Laboratory, Braga, Guimarães Portugal
| | - Pedro Morgado
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057, Braga, Portugal. .,ICVS-3Bs PT Government Associate Laboratory, Braga, Guimarães, Portugal. .,Clinical Academic Center-Braga (2CA), Hospital de Braga, Braga, Portugal.
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Santa-Marinha L, Castanho I, Silva RR, Bravo FV, Miranda AM, Meira T, Morais-Ribeiro R, Marques F, Xu Y, Point du Jour K, Wenk M, Chan RB, Di Paolo G, Pinto V, Oliveira TG. Phospholipase D1 Ablation Disrupts Mouse Longitudinal Hippocampal Axis Organization and Functioning. Cell Rep 2021; 30:4197-4208.e6. [PMID: 32209478 DOI: 10.1016/j.celrep.2020.02.102] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 09/17/2019] [Revised: 01/29/2020] [Accepted: 02/27/2020] [Indexed: 01/01/2023] Open
Abstract
Phosphatidic acid (PA) is a signaling lipid involved in the modulation of synaptic structure and functioning. Based on previous work showing a decreasing PA gradient along the longitudinal axis of the rodent hippocampus, we asked whether the dorsal hippocampus (DH) and the ventral hippocampus (VH) are differentially affected by PA modulation. Here, we show that phospholipase D1 (PLD1) is a major hippocampal PA source, compared to PLD2, and that PLD1 ablation affects predominantly the lipidome of the DH. Moreover, Pld1 knockout (KO) mice show specific deficits in novel object recognition and social interaction and disruption in the DH-VH dendritic arborization differentiation in CA1/CA3 pyramidal neurons. Also, Pld1 KO animals present reduced long-term depression (LTD) induction and reduced GluN2A and SNAP-25 protein levels in the DH. Overall, we observe that PLD1-derived PA reduction leads to differential lipid signatures along the longitudinal hippocampal axis, predominantly affecting DH organization and functioning.
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Affiliation(s)
- Luísa Santa-Marinha
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Isabel Castanho
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rita Ribeiro Silva
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Francisca Vaz Bravo
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - André Miguel Miranda
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Torcato Meira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rafaela Morais-Ribeiro
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Yimeng Xu
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY 10032, USA
| | - Kimberly Point du Jour
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY 10032, USA; Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY 10032, USA
| | - Markus Wenk
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117596, Singapore
| | - Robin Barry Chan
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY 10032, USA; Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY 10032, USA
| | - Gilbert Di Paolo
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY 10032, USA; Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, NY 10032, USA
| | - Vítor Pinto
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Tiago Gil Oliveira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal.
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Lenis-Rojas OA, Robalo MP, Tomaz AI, Fernandes AR, Roma-Rodrigues C, Teixeira RG, Marques F, Folgueira M, Yáñez J, Gonzalez AA, Salamini-Montemurri M, Pech-Puch D, Vázquez-García D, Torres ML, Fernández A, Fernández JJ. Half-Sandwich Ru( p-cymene) Compounds with Diphosphanes: In Vitro and In Vivo Evaluation As Potential Anticancer Metallodrugs. Inorg Chem 2021; 60:2914-2930. [PMID: 33570919 DOI: 10.1021/acs.inorgchem.0c02768] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Ruthenium(II) complexes are currently considered attractive alternatives to the widely used platinum-based drugs. We present herein the synthesis and characterization of half-sandwich ruthenium compounds formulated as [Ru(p-cymene)(L)Cl][CF3SO3] (L = 1,1-bis(methylenediphenylphosphano)ethylene, 1; L = 1,1-bis(diphenylphosphano)ethylene, 2), which were characterized by elemental analysis, mass spectrometry, 1H and 31P{1H} NMR, UV-vis and IR spectroscopy, conductivity measurements and cyclic voltammetry. The molecular structures for both complexes were determined by single-crystal X-ray diffraction. Their cytotoxic activity was evaluated using the MTT assay against human tumor cells, namely ovarian (A2780) and breast (MCF7 and MDA-MB-231). Both complexes were active against breast adenocarcinoma cells, with complex 1 exhibiting a quite remarkable cytotoxicity in the submicromolar range. Interestingly, at concentrations equivalent to the IC50 values in the MCF7 cancer cells, complexes 1 and 2 presented lower cytotoxicity in normal human primary fibroblasts. The antiproliferative effects of 1 and 2 in MCF7 cells might be associated with the induction of reactive oxygen species (ROS), leading to a combined cell death mechanism via apoptosis and autophagy. Despite the fact that in vitro a partial intercalation between complexes and DNA was observed, no MCF7 cell cycle delay or arrest was observed, indicating that DNA might not be a direct target. Complexes 1 and 2 both exhibited a moderate to strong interaction with human serum albumin, suggesting that protein targets may be involved in their mode of action. Their acute toxicity was evaluated in the zebrafish model. Complex 1 (the most toxic of the two) exhibited a lethal toxicity LC50 value about 1 order of magnitude higher than any IC50 concentrations found for the cancer cell models used, highlighting its therapeutic relevance as a drug candidate in cancer chemotherapy.
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Affiliation(s)
- Oscar A Lenis-Rojas
- Instituto de Tecnologia Química e Biológica António Xavier, ITQB, Av. da República, EAN, 2780-157 Oeiras, Portugal
| | - M Paula Robalo
- Área Departamental de Engenharia Química, ISEL-Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, Rua Conselheiro Emídio Navarro, 1, 1959-007 Lisboa, Portugal.,Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Ana Isabel Tomaz
- Centro de Química Estrutural and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1049-016 Lisboa, Portugal
| | - Alexandra R Fernandes
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Catarina Roma-Rodrigues
- UCIBIO, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Ricardo G Teixeira
- Centro de Química Estrutural and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1049-016 Lisboa, Portugal
| | - Fernanda Marques
- Centro de Ciências e Tecnologías Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, E.N. 10 (km 139.7), 2695-066 Bobadela LRS, Portugal
| | - Mónica Folgueira
- Neurover Group, Centro de Investigacións Científicas Avanzadas (CICA) and Department of Biology, Universidade da Coruña, 15008 A Coruña, Spain.,Department of Cell and Developmental Biology, University College London, Gower Street, London WC1 6BT, U.K
| | - Julián Yáñez
- Neurover Group, Centro de Investigacións Científicas Avanzadas (CICA) and Department of Biology, Universidade da Coruña, 15008 A Coruña, Spain
| | - Anabel Alba Gonzalez
- Neurover Group, Centro de Investigacións Científicas Avanzadas (CICA) and Department of Biology, Universidade da Coruña, 15008 A Coruña, Spain
| | - Martín Salamini-Montemurri
- Neurover Group, Centro de Investigacións Científicas Avanzadas (CICA) and Department of Biology, Universidade da Coruña, 15008 A Coruña, Spain
| | - Dawrin Pech-Puch
- Departamento de Química & Centro de Investigaciones Científicas Avanzadas (CICA), Universidade da Coruña, 15008 A Coruña, Spain.,Departamento de Biología Marina, Universidad Autónoma de Yucatán, Km. 15.5, carretera Mérida-Xmatkuil, A.P. 4-116 Itzimná, C.P. 97100, Mérida, Yucatán, Mexico
| | - Digna Vázquez-García
- Departamento de Química & Centro de Investigaciones Científicas Avanzadas (CICA), Universidade da Coruña, 15008 A Coruña, Spain
| | - Margarita López Torres
- Departamento de Química & Centro de Investigaciones Científicas Avanzadas (CICA), Universidade da Coruña, 15008 A Coruña, Spain
| | - Alberto Fernández
- Departamento de Química & Centro de Investigaciones Científicas Avanzadas (CICA), Universidade da Coruña, 15008 A Coruña, Spain
| | - Jesús J Fernández
- Departamento de Química & Centro de Investigaciones Científicas Avanzadas (CICA), Universidade da Coruña, 15008 A Coruña, Spain
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Tahira A, Marques F, Lisboa B, Feltrin A, Barbosa A, de Oliveira KC, de Bragança Pereira CA, Leite R, Grinberg L, Suemoto C, de Lucena Ferretti-Rebustini RE, Pasqualucci CA, Jacob-Filho W, Brentani H, Palha JA. Are the 50's, the transition decade, in choroid plexus aging? GeroScience 2021; 43:225-237. [PMID: 33576945 PMCID: PMC8050122 DOI: 10.1007/s11357-021-00329-x] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/25/2021] [Indexed: 12/13/2022] Open
Abstract
The choroid plexus (CP) is an important structure for the brain. Besides its major role in the production of cerebrospinal fluid (CSF), it conveys signals originating from the brain, and from the circulatory system, shaping brain function in health and in pathology. Previous studies in rodents have revealed altered transcriptome both during aging and in various diseases of the central nervous system, including Alzheimer's disease. In the present study, a high-throughput sequencing of the CP transcriptome was performed in postmortem samples of clinically healthy individuals aged 50's through 80's. The data shows an age-related profile, with the main changes occurring in the transition from the 50's to the 60's, stabilizing thereafter. Specifically, neuronal and membrane functions distinguish the transcriptome between the 50's and the 60's, while neuronal and axon development and extracellular structure organization differentiate the 50's from the 70's. These findings suggest that changes in the CP transcriptome occur early in the aging process. Future studies will unravel whether these relate with processes occurring in late- onset brain diseases.
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Affiliation(s)
- Ana Tahira
- LIM23, Instituto de Psiquiatria, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Bianca Lisboa
- LIM23, Instituto de Psiquiatria, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Arthur Feltrin
- LIM23, Instituto de Psiquiatria, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
- Center of Mathematics, Computing and Cognition, Federal University of ABC, Santo André, SP, Brazil
| | - André Barbosa
- LIM23, Instituto de Psiquiatria, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
- Inter-institutional Grad Program on Bioinformatics, University of São Paulo, São Paulo, SP, Brazil
| | - Kátia Cristina de Oliveira
- LIM23, Instituto de Psiquiatria, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
- Center of Mathematics, Computing and Cognition, Federal University of ABC, Santo André, SP, Brazil
| | | | - Renata Leite
- Biobank for Aging Studies Group, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Lea Grinberg
- Biobank for Aging Studies Group, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Claudia Suemoto
- Biobank for Aging Studies Group, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | | | - Carlos Augusto Pasqualucci
- Biobank for Aging Studies Group, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Wilson Jacob-Filho
- Biobank for Aging Studies Group, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Helena Brentani
- LIM23, Instituto de Psiquiatria, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
- Departamento de Psiquiatria, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Joana Almeida Palha
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
- Clinical Academic Center, Braga, Portugal.
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Beale A, O'Donnell J, Nakai M, Nanayakkara S, Vizi D, Carter K, Dean E, Ribiero R, Yiallourou S, Carrington M, Marques F, Kaye D. The Gut Microbiome of Heart Failure With Preserved Ejection Fraction. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jakob CHG, Dominelli B, Schlagintweit JF, Fischer PJ, Schuderer F, Reich RM, Marques F, Correia JDG, Kühn FE. Improved Antiproliferative Activity and Fluorescence of a Dinuclear Gold(I) Bisimidazolylidene Complex via Anthracene-Modification. Chem Asian J 2020; 15:4275-4279. [PMID: 33405335 PMCID: PMC7756789 DOI: 10.1002/asia.202001104] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 09/15/2020] [Revised: 10/12/2020] [Indexed: 12/26/2022]
Abstract
A straightforward modification route to obtain mono- and di-substituted anthroyl ester bridge functionalized dinuclear Au(I) bis-N-heterocyclic carbene complexes is presented. The functionalization can be achieved starting from a hydroxyl-functionalized ligand precursor followed by transmetallation of the corresponding Ag complex or via esterification of the hydroxyl-functionalized gold complex. The compounds are characterized by NMR-spectroscopy, ESI-MS, elemental analysis and SC-XRD. The mono-ester Au complex shows quantum yields around 18%. In contrast, the corresponding syn-di-ester Au complex, exhibits significantly lower quantum yields of around 8%. Due to insufficient water solubility of the di-ester, only the mono-ester complex has been tested regarding its antiproliferative activity against HeLa- (cervix) and MCF-7- (breast) cancer cell lines and a healthy fibroblast cell line (V79). IC50 values of 7.26 μM in the HeLa cell line and 7.92 μM in the MCF-7 cell line along with selectivity indices of 8.8 (HeLa) and 8.0 (MCF-7) are obtained. These selectivity indices are significantly higher than those obtained for the reference drugs cisplatin or auranofin.
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Affiliation(s)
- Christian H. G. Jakob
- Department of Chemistry and Catalysis Research Center, Molecular CatalysisTechnische Universität MünchenLichtenbergstraße 485748Garching bei MünchenGermany
| | - Bruno Dominelli
- Department of Chemistry and Catalysis Research Center, Molecular CatalysisTechnische Universität MünchenLichtenbergstraße 485748Garching bei MünchenGermany
| | - Jonas F. Schlagintweit
- Department of Chemistry and Catalysis Research Center, Molecular CatalysisTechnische Universität MünchenLichtenbergstraße 485748Garching bei MünchenGermany
| | - Pauline J. Fischer
- Department of Chemistry and Catalysis Research Center, Molecular CatalysisTechnische Universität MünchenLichtenbergstraße 485748Garching bei MünchenGermany
| | - Franziska Schuderer
- Department of Chemistry and Catalysis Research Center, Molecular CatalysisTechnische Universität MünchenLichtenbergstraße 485748Garching bei MünchenGermany
| | - Robert M. Reich
- Department of Chemistry and Catalysis Research Center, Molecular CatalysisTechnische Universität MünchenLichtenbergstraße 485748Garching bei MünchenGermany
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior TécnicoUniversidade de LisboaCampus Tecnológico e Nuclear, Estrada Nacional N° 10 (km 139,7)2695-066Bobadela LRSPortugal
| | - João D. G. Correia
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências Nucleares, Instituto Superior TécnicoUniversidade de LisboaCampus Tecnológico e Nuclear, Estrada Nacional N° 10 (km 139,7)2695-066Bobadela LRSPortugal
| | - Fritz E. Kühn
- Department of Chemistry and Catalysis Research Center, Molecular CatalysisTechnische Universität MünchenLichtenbergstraße 485748Garching bei MünchenGermany
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das Neves SP, Sousa JC, Sousa N, Cerqueira JJ, Marques F. Altered astrocytic function in experimental neuroinflammation and multiple sclerosis. Glia 2020; 69:1341-1368. [PMID: 33247866 DOI: 10.1002/glia.23940] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 11/14/2020] [Accepted: 11/17/2020] [Indexed: 12/11/2022]
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system (CNS) that affects about 2.5 million people worldwide. In MS, the patients' immune system starts to attack the myelin sheath, leading to demyelination, neurodegeneration, and, ultimately, loss of vital neurological functions such as walking. There is currently no cure for MS and the available treatments only slow the initial phases of the disease. The later-disease mechanisms are poorly understood and do not directly correlate with the activity of immune system cells, the main target of the available treatments. Instead, evidence suggests that disease progression and disability are better correlated with the maintenance of a persistent low-grade inflammation inside the CNS, driven by local glial cells, like astrocytes and microglia. Depending on the context, astrocytes can (a) exacerbate inflammation or (b) promote immunosuppression and tissue repair. In this review, we will address the present knowledge that exists regarding the role of astrocytes in MS and experimental animal models of the disease.
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Affiliation(s)
- Sofia Pereira das Neves
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal
| | - João Carlos Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal
| | - Nuno Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal.,Clinical Academic Center, Braga, Portugal
| | - João José Cerqueira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal.,Clinical Academic Center, Braga, Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal
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Portugal-Nunes C, Castanho TC, Amorim L, Moreira PS, Mariz J, Marques F, Sousa N, Santos NC, Palha JA. Iron Status is Associated with Mood, Cognition, and Functional Ability in Older Adults: A Cross-Sectional Study. Nutrients 2020; 12:E3594. [PMID: 33238615 PMCID: PMC7700455 DOI: 10.3390/nu12113594] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 10/05/2020] [Revised: 11/02/2020] [Accepted: 11/19/2020] [Indexed: 01/04/2023] Open
Abstract
Several conditions are risk factors for iron deficiency (ID), some of which are highly prevalent in older individuals. Despite the amount of evidence pointing for a role of ID in cognition, mood and physical functional ability, the research addressing these associations in older individuals is still scarce. In the present study, 162 older community-dwelling individuals (29.53% classified as ID) were enrolled in a cross-sectional analysis and characterized regarding cognition, mood, functional ability, general nutritional intake and iron status. Assessment of iron status was performed using several blood biomarkers. Storage and erythropoiesis dimensions were positively associated with memory, along with an interaction (moderator effect) between iron storage and nutritional status. A more depressed mood was negatively associated with (iron) transport, transport saturation and erythropoiesis dimensions, and functional tiredness was positively associated with the erythropoiesis dimension. These observations indicate that lower iron status is associated with depressive mood, functional tiredness and poorer memory ability, with the latter moderated by nutritional status. These findings suggest that using iron as a continuous variable may be useful in finding associations with iron homeostasis, eventually missed when iron levels are considered within the usual classification groups.
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Affiliation(s)
- Carlos Portugal-Nunes
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (C.P.-N.); (T.C.C.); (L.A.); (P.S.M.); (J.M.); (F.M.); (N.S.); (N.C.S.)
- ICVS/3B′s, PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
- Clinical Academic Center—Braga, 4710-243 Braga, Portugal
| | - Teresa Costa Castanho
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (C.P.-N.); (T.C.C.); (L.A.); (P.S.M.); (J.M.); (F.M.); (N.S.); (N.C.S.)
- ICVS/3B′s, PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
- Clinical Academic Center—Braga, 4710-243 Braga, Portugal
| | - Liliana Amorim
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (C.P.-N.); (T.C.C.); (L.A.); (P.S.M.); (J.M.); (F.M.); (N.S.); (N.C.S.)
- ICVS/3B′s, PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
- Associação Centro de Medicina P5 (ACMP5), 4710-057 Braga, Portugal
| | - Pedro Silva Moreira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (C.P.-N.); (T.C.C.); (L.A.); (P.S.M.); (J.M.); (F.M.); (N.S.); (N.C.S.)
- ICVS/3B′s, PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
- Clinical Academic Center—Braga, 4710-243 Braga, Portugal
| | - José Mariz
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (C.P.-N.); (T.C.C.); (L.A.); (P.S.M.); (J.M.); (F.M.); (N.S.); (N.C.S.)
- ICVS/3B′s, PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
- Clinical Academic Center—Braga, 4710-243 Braga, Portugal
- Emergency Department, Intermediate Care Unit (EDIMCU), Hospital de Braga, 4710-243 Braga, Portugal
| | - Fernanda Marques
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (C.P.-N.); (T.C.C.); (L.A.); (P.S.M.); (J.M.); (F.M.); (N.S.); (N.C.S.)
- ICVS/3B′s, PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
| | - Nuno Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (C.P.-N.); (T.C.C.); (L.A.); (P.S.M.); (J.M.); (F.M.); (N.S.); (N.C.S.)
- ICVS/3B′s, PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
- Clinical Academic Center—Braga, 4710-243 Braga, Portugal
| | - Nadine Correia Santos
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (C.P.-N.); (T.C.C.); (L.A.); (P.S.M.); (J.M.); (F.M.); (N.S.); (N.C.S.)
- ICVS/3B′s, PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
- Associação Centro de Medicina P5 (ACMP5), 4710-057 Braga, Portugal
| | - Joana Almeida Palha
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal; (C.P.-N.); (T.C.C.); (L.A.); (P.S.M.); (J.M.); (F.M.); (N.S.); (N.C.S.)
- ICVS/3B′s, PT Government Associate Laboratory, 4710-057 Braga/Guimarães, Portugal
- Clinical Academic Center—Braga, 4710-243 Braga, Portugal
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44
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Dominelli B, Jakob CH, Oberkofler J, Fischer PJ, Esslinger EM, Reich RM, Marques F, Pinheiro T, Correia JD, Kühn FE. Mechanisms underlying the cytotoxic activity of syn/anti-isomers of dinuclear Au(I) NHC complexes. Eur J Med Chem 2020; 203:112576. [DOI: 10.1016/j.ejmech.2020.112576] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 02/09/2023]
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45
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Machado JF, Sequeira D, Marques F, Piedade MFM, Villa de Brito MJ, Helena Garcia M, Fernandes AR, Morais TS. New copper(I) complexes selective for prostate cancer cells. Dalton Trans 2020; 49:12273-12286. [PMID: 32839796 DOI: 10.1039/d0dt02157a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A new family of eighteen Cu(i) complexes of the general formula [Cu(PP)(LL)][BF4], where PP is a phosphane ligand and LL represents an N,O-heteroaromatic bidentate ligand, has been synthesized and fully characterized by classical analytical and spectroscopic methods. Five complexes of this series were also characterized by single crystal X-ray diffraction studies. The cytotoxicity of all compounds was evaluated in breast (MCF7) and prostate (LNCap) human cancer cells and in a normal prostate cell line (RWPE). In general, all compounds showed higher cytotoxicity for the prostate cancer cells than for the breast cells, with IC50 values in the range 0.2-2 μM after 24 h of treatment. The most cytotoxic compound, [Cu(dppe)(2-ap)][BF4] (16), where dppe = 1,2-bis(diphenylphosphano) ethane and 2-ap = 2-acetylpyridine, showed a high level of cellular internalization, generation of intracellular ROS and activation of the cell death mechanism via apoptosis/necrosis. Owing to its high cytotoxic activity for LNCap cells, being 70-fold higher than that for normal prostate cells (RWPE), complex (16) was found to be the most promising for further research in prostate cancer models.
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Affiliation(s)
- João Franco Machado
- CQE, Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
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46
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Banerjee A, Dash SP, Mohanty M, Sahu G, Sciortino G, Garribba E, Carvalho MFNN, Marques F, Costa Pessoa J, Kaminsky W, Brzezinski K, Dinda R. New V IV, V IVO, V VO, and V VO 2 Systems: Exploring their Interconversion in Solution, Protein Interactions, and Cytotoxicity. Inorg Chem 2020; 59:14042-14057. [PMID: 32914971 DOI: 10.1021/acs.inorgchem.0c01837] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The synthesis and characterization of one oxidoethoxidovanadium(V) [VVO(L1)(OEt)] (1) and two nonoxidovanadium(IV) complexes, [VIV(L2-3)2] (2 and 3), with aroylhydrazone ligands incorporating naphthalene moieties, are reported. The synthesized oxido and nonoxido vanadium complexes are characterized by various physicochemical techniques, and their molecular structures are solved by single crystal X-ray diffraction (SC-XRD). This revealed that in 1 the geometry around the vanadium atom corresponds to a distorted square pyramid, with a O4N coordination sphere, whereas that of the two nonoxido VIV complexes 2 and 3 corresponds to a distorted trigonal prismatic arrangement with a O4N2 coordination sphere around each "bare" vanadium center. In aqueous solution, the VVO moiety of 1 undergoes a change to VVO2 species, yielding [VVO2(L1)]- (1'), while the nonoxido VIV-compounds 2 and 3 are partly converted into their corresponding VIVO complexes, [VIVO(L2-3)(H2O)] (2' and 3'). Interaction of these VVO2, VIVO, and VIV systems with two model proteins, ubiquitin (Ub) and lysozyme (Lyz), is investigated through docking approaches, which suggest the potential binding sites: the interaction is covalent for species 2' and 3', with the binding to Glu16, Glu18, and Asp21 for Ub, and His15 for Lyz, and it is noncovalent for species 1', 2, and 3, with the surface residues of the proteins. The ligand precursors and complexes are also evaluated for their in vitro antiproliferative activity against ovarian (A2780) and prostate (PC3) human cancer cells and in normal fibroblasts (V79) to check the selectivity of the compounds for cancer cells.
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Affiliation(s)
- Atanu Banerjee
- Department of Chemistry, National Institute of Technology, Rourkela, 769008 Odisha, India
| | - Subhashree P Dash
- Department of Chemistry, National Institute of Technology, Rourkela, 769008 Odisha, India
| | - Monalisa Mohanty
- Department of Chemistry, National Institute of Technology, Rourkela, 769008 Odisha, India
| | - Gurunath Sahu
- Department of Chemistry, National Institute of Technology, Rourkela, 769008 Odisha, India
| | - Giuseppe Sciortino
- Dipartimento di Chimica e Farmacia, Università di Sassari, Via Vienna 2, I-07100 Sassari, Italy.,Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallés, Barcelona, Spain
| | - Eugenio Garribba
- Dipartimento di Chimica e Farmacia, Università di Sassari, Via Vienna 2, I-07100 Sassari, Italy
| | - M Fernanda N N Carvalho
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - João Costa Pessoa
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Werner Kaminsky
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195, United States
| | - Krzysztof Brzezinski
- Faculty of Chemistry, University of Bialystok, Ciolkowskiego 1K, 15-245, Bialystok, Poland
| | - Rupam Dinda
- Department of Chemistry, National Institute of Technology, Rourkela, 769008 Odisha, India
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47
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Jakob CHG, Dominelli B, Hahn EM, Berghausen TO, Pinheiro T, Marques F, Reich RM, Correia JDG, Kühn FE. Antiproliferative Activity of Functionalized Histidine-derived Au(I) bis-NHC Complexes for Bioconjugation. Chem Asian J 2020; 15:2754-2762. [PMID: 32592289 PMCID: PMC7689731 DOI: 10.1002/asia.202000620] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 05/21/2020] [Revised: 06/20/2020] [Indexed: 12/23/2022]
Abstract
A series of histidine derived Au(I) bis-NHC complexes bearing different ester, amide and carboxylic acid functionalities as well as wingtip substituents is synthesized and characterized. The stability in aqueous media, in vitro cytotoxicity in a set of cancer cell lines (MCF7, PC3 and A2780/A2780cisR) along with the cellular uptake are evaluated. Stability tests suggest hydrolysis of the ester within 8 h, which might lead to deactivation. Furthermore, the bis-NHC system shows a sufficient stability against cysteine and the thiol containing peptide GSH. The benzyl ester and amide show the highest activity comparable to the benchmark compound cisplatin, with the ester only displaying a slightly lower cytotoxicity than the amide. A cellular uptake study revealed that the benzyl ester and the amide could have different intracellular distribution profiles but both complexes induce perturbations of the cellular physiological processes. The simple modifiability and high stability of the complexes provides a promising system for upcoming post modifications to enable targeted cancer therapy.
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Affiliation(s)
- Christian H. G. Jakob
- Molecular CatalysisCatalysis Research Center and Department of Chemistry Department Technische Universität MünchenLichtenbergstrasse 4D-85748Garching bei MünchenGermany
| | - Bruno Dominelli
- Molecular CatalysisCatalysis Research Center and Department of Chemistry Department Technische Universität MünchenLichtenbergstrasse 4D-85748Garching bei MünchenGermany
| | - Eva M. Hahn
- Molecular CatalysisCatalysis Research Center and Department of Chemistry Department Technische Universität MünchenLichtenbergstrasse 4D-85748Garching bei MünchenGermany
| | - Tobias O. Berghausen
- Molecular CatalysisCatalysis Research Center and Department of Chemistry Department Technische Universität MünchenLichtenbergstrasse 4D-85748Garching bei MünchenGermany
| | - Teresa Pinheiro
- Institute for Bioengineering and BiosciencesDepartamento de Engenharia e Ciências NuclearesInstituto Superior TécnicoUniversidade de LisboaAv. Rovisco Pais 11049-001LisboaPortugal
| | - Fernanda Marques
- Centro de Ciências e Tecnologias NuclearesDepartamento de Engenharia e Ciências NuclearesInstituto Superior TécnicoUniversidade de LisboaCTN, Estrada Nacional 10 (km 139,7)2695-066Bobadela LRSPortugal
| | - Robert M. Reich
- Molecular CatalysisCatalysis Research Center and Department of Chemistry Department Technische Universität MünchenLichtenbergstrasse 4D-85748Garching bei MünchenGermany
| | - João D. G. Correia
- Centro de Ciências e Tecnologias NuclearesDepartamento de Engenharia e Ciências NuclearesInstituto Superior TécnicoUniversidade de LisboaCTN, Estrada Nacional 10 (km 139,7)2695-066Bobadela LRSPortugal
| | - Fritz E. Kühn
- Molecular CatalysisCatalysis Research Center and Department of Chemistry Department Technische Universität MünchenLichtenbergstrasse 4D-85748Garching bei MünchenGermany
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Carvalho Sousa S, Magalhães Alves C, Santos S, Marques F, Duarte R, Gonçalves G, Carvalho C. Tuberculosis: where and how fast are stone quarry workers infected? Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.796] [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: 11/12/2022] Open
Abstract
Abstract
Background
In 2018 an annual tuberculosis (TB) screening program targeting stone quarry workers was implemented in two municipalities in Northern Portugal. These have been hotspots for TB (76 and 59 cases per 100 000 population per year in 2012-2016, well above the 18 cases per 100 000 population observed in Portugal in 2016), with 30% of active TB cases occurring among stone quarry workers. Screening in this setting is recommended by the World Health Organization, as exposure to silica and silicosis increase the risk of TB. Occupational health services, TB outpatient centers, the hospital, a laboratory, primary health care and public health services work closely together with employers, employees, municipal council and the community promoting meetings and continuous training.
Screening activities included a symptom questionnaire, chest X-ray and sputum exam; and, after exclusion of active TB, interferon-gamma release assay (IGRA) for latent tuberculosis infection (LTBI). Preventive treatment was offered.
Objective
Assess annual rate of TB infection
Methods
Workers without history of TB/LTBI were IGRA tested in 2018, and retested in 2019. Annual rate of infection was calculated as the proportion of workers IGRA negative in 2018 becoming positive in 2019.
Results
In 2018-2019, 274 workers were screened yearly. In 2018, 22 were diagnosed with LTBI and 26 had previous history of TB/LTBI. Out of 226 IGRA negative workers in 2018, 19 tested positive in 2019 (8.4% annual rate of infection). These individuals were not identified as close contacts of any new TB case and no cases of active TB were reported in their stone quarries. Some active TB cases were regular customers of specific bars.
Conclusions
Active transmission of TB seems to be occurring among stone quarry workers. Workers that converted from IGRA negative to positive had no co-workers with active TB in the study period, suggesting they could have been infected away from the workplace, possibly in community public places.
Key messages
Stone quarry workers in a high-risk TB sub-region were infected at an 8.4% annual rate, and could have been infected in community public places such as bars. Besides screening close contacts and at workplace, more efforts should be made identifying social contacts of active TB cases.
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Affiliation(s)
- S Carvalho Sousa
- Public Health Unit, Northern Regional Health Administration, Paredes, Portugal
- Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal
| | - C Magalhães Alves
- Public Health Unit Low Tâmega, Northern Regional Health Administration, Marco de Canaveses, Portugal
- Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal
| | - S Santos
- Laboratory of Pneumological Diagnostic Center, Northern Regional Health Administration, Porto, Portugal
| | - F Marques
- Public Health Unit South Sousa Valley, Northern Regional Health Administration, Paredes, Portugal
| | - R Duarte
- Pulmonology Department, Hospital Centre of Vila Nova de Gaia/Espinho EPE, Vila Nova de Gaia, Portugal
- EPIUnit, Public Health Institute, University of Porto, Porto, Portugal
- Public Health Science and Medical Education Department, School of Medicine, University of Porto, Porto, Portugal
| | - G Gonçalves
- Multidisciplinary Unit for Biomedical Research, Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal
| | - C Carvalho
- Department of Public Health, Northern Regional Health Administration, Porto, Portugal
- Multidisciplinary Unit for Biomedical Research, Institute of Biomedical Sciences Abel Salazar, University of Porto, Porto, Portugal
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Nunes P, Marques F, Cavaco I, Costa Pessoa J, Correia I. Exploring the therapeutic potential of Cu(II)-complexes with ligands derived from pyridoxal. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119558] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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50
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Nunes P, Correia I, Marques F, Matos AP, Dos Santos MMC, Azevedo CG, Capelo JL, Santos HM, Gama S, Pinheiro T, Cavaco I, Pessoa JC. Copper Complexes with 1,10-Phenanthroline Derivatives: Underlying Factors Affecting Their Cytotoxicity. Inorg Chem 2020; 59:9116-9134. [PMID: 32578983 DOI: 10.1021/acs.inorgchem.0c00925] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [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
The interpretation of in vitro cytotoxicity data of Cu(II)-1,10-phenanthroline (phen) complexes normally does not take into account the speciation that complexes undergo in cell incubation media and its implications in cellular uptake and mechanisms of action. We synthesize and test the activity of several distinct Cu(II)-phen compounds; up to 24 h of incubation, the cytotoxic activity differs for the Cu complexes and the corresponding free ligands, but for longer incubation times (e.g., 72 h), all compounds display similar activity. Combining the use of several spectroscopic, spectrometric, and electrochemical techniques, the speciation of Cu-phen compounds in cell incubation media is evaluated, indicating that the originally added complex almost totally decomposed and that Cu(II) and phen are mainly bound to bovine serum albumin. Several methods are used to disclose relationships between structure, activity, speciation in incubation media, cellular uptake, distribution of Cu in cells, and cytotoxicity. Contrary to what is reported in most studies, we conclude that interaction with cell components and cell death involves the separate action of Cu ions and phen molecules, not [Cu(phen)n] species. This conclusion should similarly apply to many other Cu-ligand systems reported to date.
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Affiliation(s)
- Patrique Nunes
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Isabel Correia
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares and Departamento de Ciências e Engenharia Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - António Pedro Matos
- Centro de Investigação Interdisciplinar Egas Moniz, Campus Universitário, Quinta da Granja, Monte de Caparica, 2829-511 Caparica, Portugal
| | - Margarida M C Dos Santos
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Cristina G Azevedo
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal
| | - José-Luis Capelo
- LAVQ, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.,PROTEOMASS Scientific Society, Madan Park, Rua dos Inventores, 2825-152 Caparica, Portugal
| | - Hugo M Santos
- LAVQ, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.,PROTEOMASS Scientific Society, Madan Park, Rua dos Inventores, 2825-152 Caparica, Portugal
| | - Sofia Gama
- Department of Analytical Chemistry, Faculty of Chemistry, University of Białystok, ul. Ciołkowskiego 1K, 15-245 Białystok, Poland
| | - Teresa Pinheiro
- Institute for Bioengineering and Biosciences and Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Isabel Cavaco
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal.,Departamento de Química e Farmácia, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - João Costa Pessoa
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal
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