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Florio D, Annunziata A, Panzetta V, Netti PA, Ruffo F, Marasco D. η 6-Arene Ru(II) Complexes as Modulators of Amyloid Aggregation. Inorg Chem 2024; 63:16001-16010. [PMID: 39129368 DOI: 10.1021/acs.inorgchem.4c02456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
Inorganic medicinal compounds represent a unique and versatile source of potential therapeutics in many diseases and, more recently, in neurodegeneration. Herein we investigated the effects of two η6-arene Ru(II) complexes on the self-aggregation processes of several amyloidogenic peptides endowed with different kinetics and primary sequences. The Ru(II) complexes exhibit, around the metal ion, two chlorides, one NHC = N-heterocyclic carbene, with a glucosyl and a methyl substituent and separately a hexamethylbenzene, which is named Ru1, and one benzene, named Ru2. Both complexes were demonstrated to bind monomeric amyloids suppressing aggregation as evidenced in thioflavin T (ThT) binding assays and autofluorescence experiments. Electrospray ionization mass spectrometry (ESI-MS) indicated the formation of direct adducts between amyloid and metal complexes, which determined the marked conformational variation of peptides and a rescue of cellular viability in SH-SY5Y cells. The complex Ru2 was demonstrated to be a more potent inhibitor of amyloid aggregation compared to Ru1 likely because of the less hindrance of the arene moiety. The presented data strongly support the in vitro ability of η6-arene Ru(II) complexes to suppress amyloid aggregation, providing insights into their potential application as novel therapeutics in neurodegenerative diseases.
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Affiliation(s)
- Daniele Florio
- Department of Pharmacy, University of Naples Federico II, 80131 Naples, Italy
| | - Alfonso Annunziata
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
- Department of Chemical, Materials, and Industrial Production Engineering (DICMaPI), University of Naples Federico II, 80125 Naples, Italy
| | - Valeria Panzetta
- Department of Chemical, Materials, and Industrial Production Engineering (DICMaPI), University of Naples Federico II, 80125 Naples, Italy
- Interdisciplinary Research Centre on Biomaterials (CRIB), University of Naples Federico II, Istituto Italiano di Tecnologia, 80125 Naples, Italy
| | - Paolo A Netti
- Department of Chemical, Materials, and Industrial Production Engineering (DICMaPI), University of Naples Federico II, 80125 Naples, Italy
- Interdisciplinary Research Centre on Biomaterials (CRIB), University of Naples Federico II, Istituto Italiano di Tecnologia, 80125 Naples, Italy
| | - Francesco Ruffo
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Daniela Marasco
- Department of Pharmacy, University of Naples Federico II, 80131 Naples, Italy
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Domínguez-Jurado E, Ripoll C, Lara-Sánchez A, Ocaña A, Vitórica-Yrezábal IJ, Bravo I, Alonso-Moreno C. Evaluation of heteroscorpionate ligands as scaffolds for the generation of Ruthenium(II) metallodrugs in breast cancer therapy. J Inorg Biochem 2024; 253:112486. [PMID: 38266323 DOI: 10.1016/j.jinorgbio.2024.112486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 01/14/2024] [Accepted: 01/15/2024] [Indexed: 01/26/2024]
Abstract
The modular synthesis of the heteroscorpionate core is explored as a tool for the rapid development of ruthenium-based therapeutic agents. Starting with a series of structurally diverse alcohol-NN ligands, a family of heteroscorpionate-based ruthenium derivatives was synthesized, characterized, and evaluated as an alternative to platinum therapy for breast cancer therapy. In vitro, the antitumoral activity of the novel derivatives was assessed in a series of breast cancer cell lines using UNICAM-1 and cisplatin as metallodrug control. Through this approach, a bimetallic heteroscorpionate-based metallodrug (RUSCO-2) was identified as the lead compound of the series with an IC50 value range as low as 3-5 μM. Notably, RUSCO-2 was found to be highly cytotoxic in TNBC cell lines, suggesting a mode of action independent of the receptor status of the cells. As a proof of concept and taking advantage of the luminescent properties of one of the complexes obtained, uptake was monitored in human breast cancer MCF7 cell lines by fluorescence lifetime imaging microscopy (FLIM) to reveal that the compound is evenly distributed in the cytoplasm and that the incorporation of the heteroscorpionate ligand protects it from aqueous processes, conversion in another entity, or the loss of the chloride group. Finally, ROS studies were conducted, lipophilicity was estimated, the chloride/water exchange was studied, and stability studies in simulated biological media were carried out to propose structure-activity relationships.
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Affiliation(s)
- Elena Domínguez-Jurado
- Universidad de Castilla-La Mancha, Unidad nanoDrug, Facultad de Farmacia de Albacete, 02008 Albacete, Spain; Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Ciudad Real 13071, Spain
| | - Consuelo Ripoll
- Universidad de Castilla-La Mancha, Unidad nanoDrug, Facultad de Farmacia de Albacete, 02008 Albacete, Spain; Universidad de Castilla-La Mancha, Departamento de Química Física. Facultad de Farmacia de Albacete, Albacete 02071, Spain
| | - Agustín Lara-Sánchez
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Ciudad Real 13071, Spain
| | - Alberto Ocaña
- Experimental Therapeutics Unit, Hospital clínico San Carlos, IdISSC and CIBERONC, Madrid, Spain
| | - Iñigo J Vitórica-Yrezábal
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avda de Fuentenueva. s/n, 18071 Granada, Spain
| | - Iván Bravo
- Universidad de Castilla-La Mancha, Unidad nanoDrug, Facultad de Farmacia de Albacete, 02008 Albacete, Spain; Universidad de Castilla-La Mancha, Departamento de Química Física. Facultad de Farmacia de Albacete, Albacete 02071, Spain
| | - Carlos Alonso-Moreno
- Universidad de Castilla-La Mancha, Unidad nanoDrug, Facultad de Farmacia de Albacete, 02008 Albacete, Spain; Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Ciudad Real 13071, Spain.
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3
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Albuquerque CCV, Teixeira TM, Dos Santos RS, Abreu DC, Silveira-Lacerda EDP, Back DF, da Silva JP, de Araujo MP. Synthesis, characterization, solution chemistry and anticancer activity of [NiCl 2(Ph 2P-N(R)-PPh 2)] (R = 2-CH 2Py, CH 2Ph and p-tol) complexes. J Inorg Biochem 2023; 240:112119. [PMID: 36639323 DOI: 10.1016/j.jinorgbio.2023.112119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/28/2022] [Accepted: 01/01/2023] [Indexed: 01/05/2023]
Abstract
In this work three Ni2+ complexes with general formula [NiCl2(Ph2P-N(R)-PPh2)], R = 2-CH2Py (Py = pyridine) - 1, CH2Ph (Ph = phenyl) - 2 and p-tol (p-tol = p-tolyl) - 3, were synthesized and characterized. These complexes were obtained in high yield by the reaction of NiCl2.6H2O and the corresponding diphenylphosphinoamine ligand (Ph2P-N(R)-PPh2) in CH2Cl2/MeOH (1:1) solution, at room temperature (∼25 °C), and characterized by 1H and 31P {1H} NMR, vibrational spectroscopy in the infrared region, electronic spectroscopy in the UV-Vis regions, elemental analysis (%C, %H, %N) and single-crystal X-ray diffraction. The solution chemistry was studied in CDCl3/dmso-d6 (dimethylsulfoxide) or neat dmso-d6 using complex 2 as a model. The complexes were evaluated as cytotoxic agents against two cancer cells lines, A549 (lung cancer cells), B16F10 (melanoma cells) and the health cells HaCaT (human epithelial keratinocytes).
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Affiliation(s)
- Carla C V Albuquerque
- Department of Chemistry, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - Thallita M Teixeira
- Department of Genetics, Institute of Biological Sciences, Federal University of Goiás, 74001-970 Goiânia, GO, Brazil
| | - Rafael S Dos Santos
- Department of Chemistry, Federal University of Paraná, Polytechnique Center, 81531-980 Curitiba, PR, Brazil
| | - Davi C Abreu
- Department of Genetics, Institute of Biological Sciences, Federal University of Goiás, 74001-970 Goiânia, GO, Brazil
| | | | - Davi F Back
- Department of Chemistry, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Juliana P da Silva
- Department of Chemistry, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - Márcio P de Araujo
- Department of Chemistry, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil; Department of Chemistry, Federal University of Paraná, Polytechnique Center, 81531-980 Curitiba, PR, Brazil.
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Bousbaa H. Novel Anticancer Strategies II. Pharmaceutics 2023; 15:pharmaceutics15020605. [PMID: 36839927 PMCID: PMC9959780 DOI: 10.3390/pharmaceutics15020605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/15/2023] Open
Abstract
Owing to the exceptional complexity of the development and progression of cancer, diverse cancer types are alarmingly increasing worldwide [...].
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Affiliation(s)
- Hassan Bousbaa
- UNIPRO-Oral Pathology and Rehabilitation Research Unit, Institute of Health Sciences (IUCS), Cooperativa de Ensino Superior Politécnico e Universitário (CESPU), Rua Central de Gandra 1317, 4585-116 Gandra, Portugal;
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR), Universidade do Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
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