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Xhafa S, Di Nicola C, Tombesi A, Pettinari R, Pettinari C, Scarpelli F, Crispini A, La Deda M, Candreva A, Garufi A, D'Orazi G, Galindo A, Marchetti F. Pyrazolone-Based Zn(II) Complexes Display Antitumor Effects in Mutant p53-Carrying Cancer Cells. J Med Chem 2024; 67:15676-15690. [PMID: 39221914 DOI: 10.1021/acs.jmedchem.4c01298] [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: 09/04/2024]
Abstract
The synthesis and characterization of nine Schiff bases of pyrazolone ligands HLn (n = 1-9) and the corresponding zinc(II) complexes 1-9 of composition [Zn(Ln)2] (n = 1-9) are reported. The molecular structures of complexes 2, 3, 4, 8, and 9 were determined by single-crystal X-ray diffraction analysis, highlighting in all cases a distorted tetrahedral geometry around the Zn(II) ion. Density functional theory studies are performed on both the HLn ligands and the derived complexes. A mechanism of dissociation and hydrolyzation of the coordinated Schiff base ligands is suggested, confirmed experimentally by powder X-ray diffraction study and photophysical studies. Complexes 1-9 were investigated in vitro as anticancer agents, along with mutant p53 (mutp53) protein levels in human cancer cell lines carrying R175H and R273H mutp53 proteins. Only those complexes with the highest Zn(II) ion release via dissociation have shown a significant cytotoxic activity with reduction of mutp53 protein levels.
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Affiliation(s)
- Sonila Xhafa
- ChIP Research Center, School of Science and Technology, University of Camerino, via Madonna delle Carceri Camerino, 62032 Macerata, Italy
| | - Corrado Di Nicola
- ChIP Research Center, School of Science and Technology, University of Camerino, via Madonna delle Carceri Camerino, 62032 Macerata, Italy
| | - Alessia Tombesi
- ChIP Research Center, School of Pharmacy, University of Camerino, via Madonna delle Carceri Camerino, 62032 Macerata, Italy
| | - Riccardo Pettinari
- ChIP Research Center, School of Pharmacy, University of Camerino, via Madonna delle Carceri Camerino, 62032 Macerata, Italy
| | - Claudio Pettinari
- ChIP Research Center, School of Pharmacy, University of Camerino, via Madonna delle Carceri Camerino, 62032 Macerata, Italy
| | - Francesca Scarpelli
- MAT-InLAB, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Arcavacata di Rende, 87036 Cosenza, Italy
| | - Alessandra Crispini
- MAT-InLAB, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Arcavacata di Rende, 87036 Cosenza, Italy
| | - Massimo La Deda
- MAT-InLAB, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Arcavacata di Rende, 87036 Cosenza, Italy
| | - Angela Candreva
- MAT-InLAB, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Arcavacata di Rende, 87036 Cosenza, Italy
| | - Alessia Garufi
- Department of Research and Advanced Technologies, IRCCS Regina Elena, National Cancer Institute, via Elio Chianesi 53, 00144 Rome, Italy
| | - Gabriella D'Orazi
- Department of Research and Advanced Technologies, IRCCS Regina Elena, National Cancer Institute, via Elio Chianesi 53, 00144 Rome, Italy
- Department of Neurosciences, Imaging and Clinical Sciences, University G. D'Annunzio, via dei Vestini 31, 66013 Chieti, Italy
| | - Agustín Galindo
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain
| | - Fabio Marchetti
- ChIP Research Center, School of Science and Technology, University of Camerino, via Madonna delle Carceri Camerino, 62032 Macerata, Italy
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Pagliaricci N, Pettinari R, Marchetti F, Tombesi A, Pagliaricci S, Cuccioloni M, Galindo A, Fadaei-Tirani F, Hadiji M, Dyson PJ. Ru(II)-Arene Complexes of Curcumin and Bisdesmethoxycurcumin Metabolites. Inorg Chem 2024; 63:7955-7965. [PMID: 38634659 DOI: 10.1021/acs.inorgchem.4c00970] [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: 04/19/2024]
Abstract
Curcuminoids and their complexes continue to attract attention in medicinal chemistry, but little attention has been given to their metabolic derivatives. Here, the first examples of (arene)Ru(II) complexes with curcuminoid metabolites, tetrahydrocurcumin (THcurcH), and tetrahydrobisdesmethoxycurcumin (THbdcurcH) were prepared and characterized. The neutral complexes [Ru(arene)(THcurc)Cl] and [Ru(arene)(THbdcurc)Cl] (arene = cymene, benzene, or hexamethylbenzene) were characterized by NMR spectroscopy and ESI mass spectrometry, and the crystal structures of the three complexes were determined by X-ray diffraction analysis. Compared to curcuminoids, these metabolites lose their conjugated double bond system responsible for their planarity, showing unique closed conformation structures. Both closed and open conformations have been analyzed and rationalized by using density functional theory (DFT). The cytotoxicity of the complexes was evaluated in vitro against human ovarian carcinoma cells (A2780 and A2780cisR), human breast adenocarcinoma cells (MCF-7 and MCF-7CR), as well as against non-tumorigenic human embryonic kidney cells (HEK293) and human breast (MCF-10A) cells and compared to the free ligands, cisplatin, and RAPTA-C. There is a correlation between cellular uptake and the cytotoxicity of the compounds, suggesting that cellular uptake and binding to nuclear DNA may be the major pathway for cytotoxicity. However, the levels of complex binding to DNA do not strictly correlate with the cytotoxic potency, indicating that other mechanisms are also involved. In addition, treatment of MCF-7 cells with [Ru(cym)(THcurc)Cl] showed a significant decrease in p62 protein levels, which is generally assumed as a noncisplatin-like mechanism of action involving autophagy. Hence, a cisplatin- and a noncisplatin-like concerted mechanism of action, involving both apoptosis and autophagy, is possible.
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Affiliation(s)
- Noemi Pagliaricci
- School of Pharmacy, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Riccardo Pettinari
- School of Pharmacy, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Fabio Marchetti
- School of Science and Technology, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Alessia Tombesi
- School of Pharmacy, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Sara Pagliaricci
- School of Pharmacy, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Massimiliano Cuccioloni
- School of Biosciences and Veterinary Medicine, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Agustín Galindo
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Mouna Hadiji
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Paul J Dyson
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
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Bashir M, Mantoo IA, Arjmand F, Tabassum S, Yousuf I. An overview of advancement of organoruthenium(II) complexes as prospective anticancer agents. Coord Chem Rev 2023; 487:215169. [DOI: 10.1016/j.ccr.2023.215169] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
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Ferraro MG, Bocchetti M, Riccardi C, Trifuoggi M, Paduano L, Montesarchio D, Misso G, Santamaria R, Piccolo M, Irace C. Triple Negative Breast Cancer Preclinical Therapeutic Management by a Cationic Ruthenium-Based Nucleolipid Nanosystem. Int J Mol Sci 2023; 24:ijms24076473. [PMID: 37047448 PMCID: PMC10094725 DOI: 10.3390/ijms24076473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 03/22/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023] Open
Abstract
Based on compelling preclinical evidence concerning the progress of our novel ruthenium-based metallotherapeutics, we are focusing research efforts on challenging indications for the treatment of invasive neoplasms such as the triple-negative breast cancer (TNBC). This malignancy mainly afflicts younger women, who are black, or who have a BRCA1 mutation. Because of faster growing and spreading, TNBC differs from other invasive breast cancers having fewer treatment options and worse prognosis, where existing therapies are mostly ineffective, resulting in a large unmet biomedical need. In this context, we benefited from an experimental model of TNBC both in vitro and in vivo to explore the effects of a biocompatible cationic liposomal nanoformulation, named HoThyRu/DOTAP, able to effectively deliver the antiproliferative ruthenium(III) complex AziRu, thus resulting in a prospective candidate drug. As part of the multitargeting mechanisms featuring metal-based therapeutics other than platinum-containing agents, we herein validate the potential of HoThyRu/DOTAP liposomes to act as a multimodal anticancer agent through inhibition of TNBC cell growth and proliferation, as well as migration and invasion. The here-obtained preclinical findings suggest a potential targeting of the complex pathways network controlling invasive and migratory cancer phenotypes. Overall, in the field of alternative chemotherapy to platinum-based drugs, these outcomes suggest prospective brand-new settings for the nanostructured AziRu complex to get promising goals for the treatment of metastatic TNBC.
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Romani D, Marchetti F, Di Nicola C, Cuccioloni M, Gong C, Eleuteri AM, Galindo A, Fadaei-Tirani F, Nabissi M, Pettinari R. Multitarget-Directed Gallium(III) Tris(acyl-pyrazolonate) Complexes Induce Ferroptosis in Cancer Cells via Dysregulation of Cell Redox Homeostasis and Inhibition of the Mevalonate Pathway. J Med Chem 2023; 66:3212-3225. [PMID: 36802330 PMCID: PMC10009752 DOI: 10.1021/acs.jmedchem.2c01374] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
A series of Ga(Qn)3 coordination compounds have been synthesized, where HQn is 1-phenyl-3-methyl-4-RC(═O)-pyrazolo-5-one. The complexes have been characterized through analytical data, NMR and IR spectroscopy, ESI mass spectrometry, elemental analysis, X-ray crystallography, and density functional theory (DFT) studies. Cytotoxic activity against a panel of human cancer cell lines was determined by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, with interesting results in terms of both cell line selectivity and toxicity values compared with cisplatin. The mechanism of action was explored by spectrophotometric, fluorometric, chromatographic, immunometric, and cytofluorimetric assays, SPR biosensor binding studies, and cell-based experiments. Cell treatment with gallium(III) complexes promoted several cell death triggering signals (accumulation of p27, PCNA, PARP fragments, activation of the caspase cascade, and inhibition of the mevalonate pathway) and induced changes in cell redox homeostasis (decreased levels of GSH/GPX4 and NADP(H), increased reactive oxygen species (ROS) and 4-hydroxynonenal (HNE), mitochondrial damage, and increased activity of CPR and CcO), identifying ferroptosis as the mechanism responsible for cancer cell death.
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Affiliation(s)
| | | | | | | | | | | | - Agustín Galindo
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Sevilla, Aptdo 1203, 41071 Sevilla, Spain
| | - Farzaneh Fadaei-Tirani
- Institut of Chemical Sciences and Engineering, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne CH-1015, Switzerland
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Arunachalam A, Rengan R, Umapathy D, Arockiam AJV. Impact of Biphenyl Benzhydrazone-Incorporated Arene Ru(II) Complexes on Cytotoxicity and the Cancer Cell Death Mechanism. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Abirami Arunachalam
- Centre for Organometallic Chemistry, School of Chemistry, Bharathidasan University, Tiruchirappalli 620024, India
| | - Ramesh Rengan
- Centre for Organometallic Chemistry, School of Chemistry, Bharathidasan University, Tiruchirappalli 620024, India
| | - Devan Umapathy
- Molecular Oncology Laboratory, Department of Biochemistry, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620024, India
| | - Antony Joseph Velanganni Arockiam
- Molecular Oncology Laboratory, Department of Biochemistry, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620024, India
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Pagliaricci N, Pettinari R, Marchetti F, Pettinari C, Cappellacci L, Tombesi A, Cuccioloni M, Hadiji M, Dyson PJ. Potent and selective anticancer activity of half-sandwich ruthenium and osmium complexes with modified curcuminoid ligands. Dalton Trans 2022; 51:13311-13321. [PMID: 35983757 DOI: 10.1039/d2dt02328h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have recently reported a series of half-sandwich ruthenium(II) complexes with curcuminoid ligands showing excellent cytotoxic activities (particularly ionic derivatives containing PTA (PTA = 1,3,5-triaza-7-phosphaadamantane). In the present study, new members of this family of compounds have been prepared with the objective to investigate the effect of a long hydrophobic chain obtained by replacing the OH-groups, present in curcumin and bisdemethoxycurcumin, with the palmitic acid ester. We report the synthesis of ruthenium(II) and osmium(II) p-cymene derivatives containing palmitic acid curcumin ester ligands ((1E,3Z,6E)-3-hydroxy-5-oxohepta-1,3,6-triene-1,7-diyl)bis(2-methoxy-4,1-phenylene)dipalmitate (p-curcH) and ((1E,3Z,6E)-3-hydroxy-5-oxohepta-1,3,6-triene-1,7-diyl)bis(4,1-phenylene)dipalmitate (p-bdcurcH). Complexes [M(II)(cym)(p-curc)/(p-bdcurc)(Cl)] 1-4 (M = Ru or Os) are neutral, whereas [M(II)(cym)(p-curc)/(p-bdcurc)(PTA)][SO3CF3] 5-8 are salts obtained when the chloride ligand is replaced by the PTA ligand. Stability studies performed on 1-8 in DMSO-PBS under physiological conditions (pH = 7.4) indicate that the complexes remain intact. The complexes exhibit potent and selective cytotoxic activity against an ovarian carcinoma cell line and its cisplatin-resistant form (A2780 and A2780cis), and non-cancerous human embryonic kidney (HEK293T) cells. To define the structure-activity relationships (SAR), the compounds have been compared with other Ru(II) and Os(II) complexes with curcuminoid ligands previously reported. SAR data reveal that the bisdemethoxycurcumin complexes are generally more active and selective than analogous curcumin-containing complexes.
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Affiliation(s)
- Noemi Pagliaricci
- School of Pharmacy, University of Camerino, via Madonna delle Carceri (ChIP), 62032 Camerino MC, Italy.
| | - Riccardo Pettinari
- School of Pharmacy, University of Camerino, via Madonna delle Carceri (ChIP), 62032 Camerino MC, Italy.
| | - Fabio Marchetti
- School of Science and Technology, University of Camerino, via Madonna delle Carceri (ChIP), 62032 Camerino MC, Italy
| | - Claudio Pettinari
- School of Pharmacy, University of Camerino, via Madonna delle Carceri (ChIP), 62032 Camerino MC, Italy.
| | - Loredana Cappellacci
- School of Pharmacy, University of Camerino, via Madonna delle Carceri (ChIP), 62032 Camerino MC, Italy.
| | - Alessia Tombesi
- School of Pharmacy, University of Camerino, via Madonna delle Carceri (ChIP), 62032 Camerino MC, Italy.
| | - Massimiliano Cuccioloni
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III Da Varano, 62032 Camerino MC, Italy
| | - Mouna Hadiji
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Paul J Dyson
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
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Marchetti F, Tombesi A, Di Nicola C, Pettinari R, Verdicchio F, Crispini A, Scarpelli F, Baldassarri C, Marangoni E, Hofer A, Galindo A, Petrelli R. Zinc(II) Complex with Pyrazolone-Based Hydrazones is Strongly Effective against Trypanosoma brucei Which Causes African Sleeping Sickness. Inorg Chem 2022; 61:13561-13575. [PMID: 35969809 PMCID: PMC9446893 DOI: 10.1021/acs.inorgchem.2c02201] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
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Two pyrazolone-based hydrazones H2L′
[in general,
H2L′; in detail, H2L1 = 5-methyl-2-phenyl-4-(2-phenyl-1-(2-(4-(trifluoromethyl)phenyl)hydrazineyl)ethyl)-2,4-dihydro-3H-pyrazol-3-one, H2L2 = (Z)-5-methyl-2-phenyl-4-(2-phenyl-1-(2-(pyridin-2-yl)hydrazineyl)ethylidene)-2,4-dihydro-3H-pyrazol-3-one] were reacted with Zn(II) and Cu(II) acceptors
affording the complexes [Zn(HL1)2(MeOH)2], [Cu(HL1)2], and [M(HL2)2] (M = Cu or Zn). X-ray and DFT studies showed the free
proligands to exist in the N–H,N–H tautomeric form and
that in [Zn(HL1)2(MeOH)2], zinc is
six-coordinated by the N,O-chelated (HL1) ligand and other
two oxygen atoms of coordinated methanol molecules, while [Cu(HL1)2] adopts a square planar geometry with the two
(HL1) ligands in anti-conformation. Finally, the [M(HL2)2] complexes are octahedral with the two (HL2) ligands acting as κ-O,N,N-donors in planar conformation.
Both the proligands and metal complexes were tested against the parasite Trypanosoma brucei and Balb3T3 cells. The Zn(II)
complexes were found to be very powerful, more than the starting proligands,
while maintaining a good safety level. In detail, H2L1 and its
Zn(II) complex have high selective index (55 and >100, respectively)
against T. brucei compared to the mammalian
Balb/3T3 reference cells. These results encouraged the researchers
to investigate the mechanism of action of these compounds that have
no structural relations with the already known drugs used against T. brucei. Interestingly, the analysis of NTP and
dNTP pools in T. brucei treated by H2L1 and its Zn(II) complex showed that the drugs had a strong
impact on the CTP pools, making it likely that CTP synthetase is the
targeted enzyme. New
Zn(II) and Cu(II) complexes with pyrazolone-based hydrazone
ligands display different structural features. The Zn(II) complexes
show strong efficiency against the parasite Trypanosoma
brucei, while maintaining a good safety level. They
strongly impact the CTP pools, indicating that CTP synthetase is the
targeted enzyme.
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Affiliation(s)
- Fabio Marchetti
- Chemistry Interdisciplinary Project (CHIP), School of Science and Technology, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Alessia Tombesi
- Chemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Corrado Di Nicola
- Chemistry Interdisciplinary Project (CHIP), School of Science and Technology, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Riccardo Pettinari
- Chemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Federico Verdicchio
- Chemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Alessandra Crispini
- MAT-InLAB, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende, Cosenza, Italy
| | - Francesca Scarpelli
- MAT-InLAB, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende, Cosenza, Italy
| | - Cecilia Baldassarri
- Chemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Elisa Marangoni
- Chemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
| | - Anders Hofer
- Department of Medical Biochemistry and Biophysics, Umea University, 901 87 Umeå, Sweden
| | - Agustín Galindo
- Departamento de Química Inorganíca, Facultad de Química, Universidad de Sevilla, Aptdo 1203, 41071 Sevilla, Spain
| | - Riccardo Petrelli
- Chemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, via Madonna delle Carceri, 62032 Camerino, Macerata, Italy
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Enhancing the Amyloid-β Anti-Aggregation Properties of Curcumin via Arene-Ruthenium(II) Derivatization. Int J Mol Sci 2022; 23:ijms23158710. [PMID: 35955845 PMCID: PMC9369426 DOI: 10.3390/ijms23158710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/02/2022] [Accepted: 08/03/2022] [Indexed: 11/23/2022] Open
Abstract
Alzheimer’s disease (AD) is a fatal neurodegenerative disorder associated with severe dementia, progressive cognitive decline, and irreversible memory loss. Although its etiopathogenesis is still unclear, the aggregation of amyloid-β (Aβ) peptides into supramolecular structures and their accumulation in the central nervous system play a critical role in the onset and progression of the disease. On such a premise, the inhibition of the early stages of Aβ aggregation is a potential prevention strategy for the treatment of AD. Since several natural occurring compounds, as well as metal-based molecules, showed promising inhibitory activities toward Aβ aggregation, we herein characterized the interaction of an organoruthenium derivative of curcumin with Aβ(1–40) and Aβ(1–42) peptides, and we evaluated its ability to inhibit the oligomerization/fibrillogenesis processes by combining in silico and in vitro methods. In general, besides being less toxic to neuronal cells, the derivative preserved the amyloid binding ability of the parent compound in terms of equilibrium dissociation constants but (most notably) was more effective both in retarding the formation and limiting the size of amyloid aggregates by virtue of a higher hindering effect on the amyloid–amyloid elongation surface. Additionally, the complex protected neuronal cells from amyloid toxicity.
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Kalaiarasi G, Mohamed Subarkhan M, Fathima Safwana C, Sruthi S, Sathiya Kamatchi T, Keerthana B, Ashok Kumar S. New organoruthenium(II) complexes containing N, X-donor (X = O, S) heterocyclic chelators: Synthesis, spectral characterization, in vitro cytotoxicity and apoptosis investigation. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120863] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Prabaharan R, Rengan R, Umapathy D, Arockiam AJV, Małecki JG. Assessment of antiproliferative activity of new half‐sandwich arene Ru (II) furylbenzhydrazone complexes. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6512] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Ramya Prabaharan
- Centre for Organometallic Chemistry, School of Chemistry Bharathidasan University Tiruchirappalli India
| | - Ramesh Rengan
- Centre for Organometallic Chemistry, School of Chemistry Bharathidasan University Tiruchirappalli India
| | - Devan Umapathy
- Molecular Oncology Laboratory, Department of Biochemistry, School of Life Sciences Bharathidasan University Tiruchirappalli India
| | | | - Jan Grzegorz Małecki
- Department of Crystallography Institute of Chemistry, University of Silesia Katowice Poland
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Sathiya Kamatchi T, Mohamed Subarkhan MK, Ramesh R, Wang H, Małecki JG. Investigation into antiproliferative activity and apoptosis mechanism of new arene Ru(ii) carbazole-based hydrazone complexes. Dalton Trans 2021; 49:11385-11395. [PMID: 32776042 DOI: 10.1039/d0dt01476a] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Ruthenium complexes with bioactive ligands are becoming promising substitutes for platinum complexes due to their precise action against various cancers. In the present study, the synthesis of three new arene Ru(ii) complexes containing new carbazole-based hydrazone ligands of general formula [(η6-benzene)Ru(L)Cl] (1-3; L = carbazolone benzhydrazone ligands), and their anticancer properties are described. The structural characterization of the ligands and their ruthenium complexes has been realized with the aid of elemental analysis, IR, UV-vis, NMR and HR-MS techniques. The molecular structures of all three complexes have been elucidated by single crystal X-ray crystallography and reveal the existence of pseudo-octahedral geometry around the ruthenium. The in vitro cancer cell growth inhibition property of the complexes against A549 (lung carcinoma), A2780 (ovarian adenocarcinoma) and non-cancerous 16HBE (human lung bronchial epithelium) cells were examined by MTT assay. All the complexes display good cytotoxicity towards both of these types of cancer cell compared to the standard drug cisplatin, with low IC50 values. Remarkably, complex 3, which contains an electron-donating substituent, induces a significant reduction of viability in A2780 cells. The inhibition capacity of the complexes towards A2780 cells proliferation was further confirmed using 5-ethynyl-2-deoxyuridine (EdU) assay via minimal DNA synthesis. The result of the acridine orange-ethidium bromide (AO-EB) fluorescent staining assay establishes that the cytotoxicity of the complexes was mediated by apoptosis in cancer cells. Furthermore, flow cytometry using Annexin V-FITC/propidium iodide (PI) double staining determines the quantitative discrimination of early apoptosis by the externalization of phosphatidylserine. In addition, cell cycle distribution indicates that the complexes block the cell cycle progression in the S-phase. The outcome of our investigation shows the promising scope and potency of tailored arene ruthenium complexes for precise cancer chemotherapy beyond platinum drugs.
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Affiliation(s)
- Thangavel Sathiya Kamatchi
- Centre for Organometallic Chemistry, School of Chemistry, Bharathidasan University, Tiruchirappalli-620 024, Tamil Nadu, India.
| | - Mohamed Kasim Mohamed Subarkhan
- The First Affiliated Hospital, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, School of Medicine, Zhejiang University, Hangzhou, 310003, PR China
| | - Rengan Ramesh
- Centre for Organometallic Chemistry, School of Chemistry, Bharathidasan University, Tiruchirappalli-620 024, Tamil Nadu, India.
| | - Hangxiang Wang
- The First Affiliated Hospital, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, School of Medicine, Zhejiang University, Hangzhou, 310003, PR China
| | - Jan Grzegorz Małecki
- Department of Crystallography, Institute of Chemistry, University of Silesia, 40-006, Katowice, Poland
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Pettinari C, Pettinari R, Xhaferai N, Giambastiani G, Rossin A, Bonfili L, Maria Eleuteri A, Cuccioloni M. Binuclear 3,3′,5,5′-tetramethyl-1H,H-4,4′-bipyrazole Ruthenium(II) complexes: Synthesis, characterization and biological studies. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119902] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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