1
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Żołek T, Dömötör O, Żabiński J. Binding mechanism of pentamidine derivatives with human serum acute phase protein α 1-acid glycoprotein. Int J Biol Macromol 2024; 266:131405. [PMID: 38582487 DOI: 10.1016/j.ijbiomac.2024.131405] [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: 02/18/2024] [Revised: 04/02/2024] [Accepted: 04/03/2024] [Indexed: 04/08/2024]
Abstract
Drug binding and interactions with plasma proteins play a crucial role in determining the efficacy of drug delivery, thus significantly impacting the overall pharmacological effect. AGP, the second most abundant plasma protein in blood circulation, has the unique capability to bind drugs and transport various compounds. In our present study, for the first time, we investigated whether AGP, a major component of the acute phase lipocalin in human plasma, can bind with pentamidine derivatives known for their high activity against the fungal pathogen Pneumocystis carinii. This investigation was conducted using integrated spectroscopic techniques and computer-based approaches. According to the results, it was concluded that compounds having heteroatoms (-NCH3) in the aliphatic linker and the addition of a Br atom and a methoxy substituent at the C-2 and C-6 positions on the benzene ring, exhibit strong interactions with the AGP binding site. These compounds are identified as potential candidates for recognition by this protein. MD studies indicated that the tested analogues complexed with AGPs reach an equilibrium state after 60 ns, suggesting the stability of the complexes. This observation was further corroborated by experimental results. Therefore, exploring the interaction mechanism of pentamidine derivatives with plasma proteins holds promise for the development of bis-benzamidine-designed pharmaceutically important drugs.
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Affiliation(s)
- Teresa Żołek
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland.
| | - Orsolya Dömötör
- Department of Molecular and Analytical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, Dóm tér 7-8, 6720 Szeged, Hungary
| | - Jerzy Żabiński
- Department of Organic and Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
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2
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Dömötör O, Mathuber M, Kowol CR. In vitro biodistribution studies on clinically approved FGFR inhibitors ponatinib, nintedanib, erlotinib and the investigational inhibitor KP2692. Eur J Pharm Sci 2024; 192:106651. [PMID: 38013124 DOI: 10.1016/j.ejps.2023.106651] [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: 09/04/2023] [Revised: 11/04/2023] [Accepted: 11/20/2023] [Indexed: 11/29/2023]
Abstract
Binding towards human serum albumin (HSA) and α1-acid glycoprotein (AGP) of three approved fibroblast growth factor receptor (FGFR) inhibitors ponatinib (PON), nintedanib (NIN) and erdafitinib (ERD), as well as the experimental drug KP2692 was studied by means of spectrofluorometric and UV-visible spectrophotometric methods. Additionally, proton dissociation processes, lipophilicity, and fluorescence properties of these four molecules were investigated in detail. The FGFR inhibitors were predominantly presented in their single protonated form (HL+) at pH 7.4 (at blood pH). At gastric pH (pH 1-2) the protonated forms (+1 - +3) are present, which provide relatively good aqueous solubility of the drugs. All of the four inhibitors are highly or extremely lipophilic at pH 7.4 (logD7.4 ≥ 2.7). At acidic pH 2.0 PON and ERD are rather lipophilic, NIN is amphiphilic, while KP2692 is highly hydrophilic. All four compounds bind to HSA and AGP. Moderate binding of PON, KP2692 and NIN was found towards albumin (logK' = 4.5-4.7), while their affinity for AGP was about one order of magnitude higher (logK' = 5.2-5.7). ERD shows a larger affinity for both proteins (logK'HSA ≈ 5.2, logK'AGP ≈ 7.0). The computed constants were used to model the distribution of the FGFR inhibitors in blood plasma under physiological and pathological (acute phase) conditions. The changing levels of the two proteins under pathological conditions compensate each other for PON and NIN, so that the free drug fractions do not change considerably. In the case of ERD the higher AGP levels distinctly reduce the free available fraction of the drug. Comparison with clinical pharmacokinetic data indicates that the here presented solution distribution studies can very well predict the conditions in cancer patients.
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Affiliation(s)
- Orsolya Dömötör
- Department of Molecular and Analytical Chemistry, University of Szeged, Dóm tér 7-8, 6720 Szeged, Hungary.
| | - Marlene Mathuber
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Christian R Kowol
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria; Research Cluster "Translational Cancer Therapy Research", University of Vienna and Medical University of Vienna, Vienna, Austria
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3
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Darwesh AMF, Imberti C, Bartnicka JJ, Al-Salemee F, Blower JE, Rigby A, Bordoloi J, Griffiths A, Ma MT, Blower PJ. In Vivo Trafficking of the Anticancer Drug Tris(8-Quinolinolato) Gallium (III) (KP46) by Gallium-68/67 PET/SPECT Imaging. Molecules 2023; 28:7217. [PMID: 37894695 PMCID: PMC10609081 DOI: 10.3390/molecules28207217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 10/29/2023] Open
Abstract
KP46 (tris(hydroxyquinolinato)gallium(III)) is an experimental, orally administered anticancer drug. Its absorption, delivery to tumours, and mode of action are poorly understood. We aimed to gain insight into these issues using gallium-67 and gallium-68 as radiotracers with SPECT and PET imaging in mice. [67Ga]KP46 and [68Ga]KP46, compared with [68Ga]gallium acetate, were used for logP measurements, in vitro cell uptake studies in A375 melanoma cells, and in vivo imaging in mice bearing A375 tumour xenografts up to 48 h after intravenous (tracer level) and oral (tracer and bulk) administration. 68Ga was more efficiently accumulated in A375 cells in vitro when presented as [68Ga]KP46 than as [68Ga]gallium acetate, but the reverse was observed when intravenously administered in vivo. After oral administration of [68/67Ga]KP46, absorption of 68Ga and 67Ga from the GI tract and delivery to tumours were poor, with the majority excreted in faeces. By 48 h, low but measurable amounts were accumulated in tumours. The distribution in tissues of absorbed radiogallium and octanol extraction of tissues suggested trafficking as free gallium rather than as KP46. We conclude that KP46 likely acts as a slow releaser of gallium ions which are inefficiently absorbed from the GI tract and trafficked to tissues, including tumour and bone.
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Affiliation(s)
- Afnan M. F. Darwesh
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
- Department of Radiologic Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Cinzia Imberti
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Joanna J. Bartnicka
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Fahad Al-Salemee
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Julia E. Blower
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Alex Rigby
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Jayanta Bordoloi
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Alex Griffiths
- London Metallomics Facility, King’s College London, London SE1 9NH, UK
| | - Michelle T. Ma
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Philip J. Blower
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
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4
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Kuramarohit S, Yaourtis AM, Nguyen A, Wood ML, Levina A, Lay PA. Anti-Migratory and Cytotoxic Activities of [Ga(8-hydroxyquinolinato) 3 ]: Roles of Endogenous Cu(II) and Drug-Induced Phenotypic Changes. Chemistry 2023; 29:e202203323. [PMID: 37385951 DOI: 10.1002/chem.202203323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 06/22/2023] [Accepted: 06/22/2023] [Indexed: 07/01/2023]
Abstract
As shown by IncuCyte Zoom imaging proliferation assays, invasive triple-negative human breast MDA-MB-231 cancer cells treated with sub-toxic doses (5.0-20 μM, 72 h) of [GaQ3 ] (Q=8-hydroxyquinolinato) caused profound morphological changes and inhibition of cell migration, which were likely due to terminal cell differentiation or similar phenotypical change. This is the first demonstration of potential use of a metal complex in differentiation anti-cancer therapy. Additionally, a trace amount of Cu(II) (0.20 μM) added to the medium dramatically increased [GaQ3 ] cytotoxicity (IC50 ~2 μM, 72 h) due to its partial dissociation and the action of the HQ ligand as a Cu(II) ionophore, as shown with electrospray mass spectrometry and fluorescence spectroscopy assays in the medium. Hence, cytotoxicity of [GaQ3 ] is strongly linked to ligand binding of essential metal ions in the medium, for example, Cu(II). Appropriate delivery mechanisms of such complexes and their ligands could enable a powerful new triple therapeutic approach for cancer chemotherapy, including cytotoxicity against primary tumour, arrest of metastases, and activation of innate and adaptive immune responses.
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Affiliation(s)
- Serene Kuramarohit
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- University of California, Berkeley, USA
| | - Andria M Yaourtis
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Annie Nguyen
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Michelle L Wood
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- Sydney Analytical, The University of Sydney, Sydney, NSW 2006, Australia
| | - Aviva Levina
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Peter A Lay
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- Sydney Analytical, The University of Sydney, Sydney, NSW 2006, Australia
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5
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Vinck R, Dömötör O, Karges J, Jakubaszek M, Seguin J, Tharaud M, Guérineau V, Cariou K, Mignet N, Enyedy ÉA, Gasser G. In Situ Bioconjugation of a Maleimide-Functionalized Ruthenium-Based Photosensitizer to Albumin for Photodynamic Therapy. Inorg Chem 2023; 62:15510-15526. [PMID: 37708255 DOI: 10.1021/acs.inorgchem.3c01984] [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: 09/16/2023]
Abstract
Maleimide-containing prodrugs can quickly and selectively react with circulating serum albumin following their injection in the bloodstream. The drug-albumin complex then benefits from longer blood circulation times and better tumor accumulation. Herein, we have applied this strategy to a previously reported highly phototoxic Ru polypyridyl complex-based photosensitizer to increase its accumulation at the tumor, reduce off-target cytotoxicity, and therefore improve its pharmacological profile. Specifically, two complexes were synthesized bearing a maleimide group: one complex with the maleimide directly incorporated into the bipyridyl ligand, and the other has a hydrophilic linker between the ligand and the maleimide group. Their interaction with albumin was studied in-depth, revealing their ability to efficiently bind both covalently and noncovalently to the plasma protein. A crucial finding is that the maleimide-functionalized complexes exhibited significantly lower cytotoxicity in noncancerous cells under dark conditions compared to the nonfunctionalized complex, which is a highly desirable property for a photosensitizer. The binding to albumin also led to a decrease in the phototoxicity of the Ru bioconjugates in comparison to the nonfunctionalized complex, probably due to a decreased cellular uptake. Unfortunately, this decrease in phototoxicity was not compensated by a dramatic increase in tumor accumulation, as was demonstrated in a tumor-bearing mouse model using inductively coupled plasma mass spectrometry (ICP-MS) studies. Consequently, this study provides valuable insight into the future design of in situ albumin-binding complexes for photodynamic therapy in order to maximize their effectiveness and realize their full potential.
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Affiliation(s)
- Robin Vinck
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, F-75005 Paris, France
| | - Orsolya Dömötör
- MTA-SZTE Lendület Functional Metal Complexes Research Group, Department of Molecular and Analytical Chemistry, University of Szeged, Dóm tér 7. H-6720 Szeged, Hungary
| | - Johannes Karges
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, F-75005 Paris, France
| | - Marta Jakubaszek
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, F-75005 Paris, France
| | - Johanne Seguin
- Université Paris Cité, UTCBS, INSERM, CNRS, 75006 Paris, France
| | - Mickaël Tharaud
- Biogéochimie à l'Anthropocène des Eléments et Contaminants Emergents, Institut de Physique du Globe de Paris, 75005 Paris, France
| | - Vincent Guérineau
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Kevin Cariou
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, F-75005 Paris, France
| | - Nathalie Mignet
- Université Paris Cité, UTCBS, INSERM, CNRS, 75006 Paris, France
| | - Éva A Enyedy
- MTA-SZTE Lendület Functional Metal Complexes Research Group, Department of Molecular and Analytical Chemistry, University of Szeged, Dóm tér 7. H-6720 Szeged, Hungary
| | - Gilles Gasser
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, F-75005 Paris, France
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6
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Sultana T, Duffin RN, Blair VL, Andrews PC. Gallium reactivates first and second generation quinolone antibiotics towards drug-resistant Klebsiella pneumoniae. Chem Commun (Camb) 2023; 59:11093-11096. [PMID: 37642496 DOI: 10.1039/d3cc02916f] [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: 08/31/2023]
Abstract
Herein, we report on a series of homoleptic [GaL3] and heteroleptic organometallic [GaMe2L] complexes of inactive quinolone antibiotics; nalidixic acid, oxolinic acid and norfloxacin with their antibacterial activity (MIC 0.024-0.781 μM) towards four multi-drug resistant strains of Klebsiella pneumoniae through complexation to gallium.
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Affiliation(s)
- Tania Sultana
- School of Chemistry, Monash University, Clayton, Melbourne, VIC 3800, Australia.
| | - Rebekah N Duffin
- School of Chemistry, Monash University, Clayton, Melbourne, VIC 3800, Australia.
| | - Victoria L Blair
- School of Chemistry, Monash University, Clayton, Melbourne, VIC 3800, Australia.
| | - Philip C Andrews
- School of Chemistry, Monash University, Clayton, Melbourne, VIC 3800, Australia.
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7
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Zhou SH, Liao WH, Yang Y, Li W, Wu YY, Wu TT, Deng SH, Zhou J, Li Z, Zhao QH, Xu JY, Chen C, Xie MJ. (8-Hydroxyquinoline) Gallium(III) Complex with High Antineoplastic Efficacy for Treating Colon Cancer via Multiple Mechanisms. ACS OMEGA 2023; 8:6945-6958. [PMID: 36844596 PMCID: PMC9948165 DOI: 10.1021/acsomega.2c07742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
A series of (8-hydroxyquinoline) gallium(III) complexes (CP-1-4) was synthesized and characterized by single X-ray crystallography and density functional theory (DFT) calculation. The cytotoxicity of the four gallium complexes toward a human nonsmall cell lung cancer cell line (A549), human colon cancer cell line (HCT116), and human normal hepatocyte cell line (LO2) was evaluated using MTT assays. CP-4 exhibited excellent cytotoxicity against HCT116 cancer cells (IC50 = 1.2 ± 0.3 μM) and lower toxicity than cisplatin and oxaliplatin. We also evaluated the anticancer mechanism studies in cell uptake, reactive oxygen species analysis, cell cycle, wound-healing, and Western blotting assays. The results showed that CP-4 affected the expression of DNA-related proteins, which led to the apoptosis of cancer cells. Moreover, molecular docking tests of CP-4 were performed to predict other binding sites and to confirm its higher binding force to disulfide isomerase (PDI) proteins. The emissive properties of CP-4 suggest that this complex can be used for colon cancer diagnosis and treatment, as well as in vivo imaging. These results also provide a foundation for the development of gallium complexes as potent anticancer agents.
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Affiliation(s)
- Si-Han Zhou
- School
of Chemical Science and Technology, Yunnan
University, Kunming 650091, Yunnan, China
| | - Wen-Hui Liao
- School
of Chemical Science and Technology, Yunnan
University, Kunming 650091, Yunnan, China
| | - Yun Yang
- School
of Chemical Science and Technology, Yunnan
University, Kunming 650091, Yunnan, China
| | - Wei Li
- Key
Laboratory of Animal Models and Human Disease Mechanisms of the Chinese
Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
| | - Yuan-yuan Wu
- School
of Chemical Science and Technology, Yunnan
University, Kunming 650091, Yunnan, China
| | - Tian-Tian Wu
- School
of Chemical Science and Technology, Yunnan
University, Kunming 650091, Yunnan, China
| | - Shi-Hui Deng
- School
of Chemical Science and Technology, Yunnan
University, Kunming 650091, Yunnan, China
| | - Jie Zhou
- School
of Chemical Science and Technology, Yunnan
University, Kunming 650091, Yunnan, China
| | - Zhe Li
- Department
of Chemical Biology and Tianjin Key Laboratory on Technologies Enabling
Development of Clinical Therapeutics and Diagnostics (Theranostics),
School of Pharmacy, Tianjin Medical University, Tianjin 300070, China
| | - Qi-Hua Zhao
- School
of Chemical Science and Technology, Yunnan
University, Kunming 650091, Yunnan, China
| | - Jing-Yuan Xu
- Department
of Chemical Biology and Tianjin Key Laboratory on Technologies Enabling
Development of Clinical Therapeutics and Diagnostics (Theranostics),
School of Pharmacy, Tianjin Medical University, Tianjin 300070, China
| | - Ceshi Chen
- The
Third Affiliated Hospital, Kunming Medical
University, Kunming 650118, China
| | - Ming-Jin Xie
- School
of Chemical Science and Technology, Yunnan
University, Kunming 650091, Yunnan, China
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8
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Evaluation of In Vitro Distribution and Plasma Protein Binding of Selected Antiviral Drugs (Favipiravir, Molnupiravir and Imatinib) against SARS-CoV-2. Int J Mol Sci 2023; 24:ijms24032849. [PMID: 36769193 PMCID: PMC9917862 DOI: 10.3390/ijms24032849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/17/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
There are a number of uncertainties regarding plasma protein binding and blood distribution of the active drugs favipiravir (FAVI), molnupiravir (MOLNU) and imatinib (IMA), which were recently proposed as therapeutics for the treatment of COVID-19 disease. Therefore, proton dissociation processes, solubility, lipophilicity, and serum protein binding of these three substances were investigated in detail. The drugs display various degrees of lipophilicity at gastric (pH 2.0) and blood pH (pH 7.4). The determined pKa values explain well the changes in lipophilic character of the respective compounds. The serum protein binding was studied by membrane ultrafiltration, frontal analysis capillary electrophoresis, steady-state fluorometry, and fluorescence anisotropy techniques. The studies revealed that the ester bond in MOLNU is hydrolyzed by protein constituents of blood serum. Molnupiravir and its hydrolyzed form do not bind considerably to blood proteins. Likewise, FAVI does not bind to human serum albumin (HSA) and α1-acid glycoprotein (AGP) and shows relatively weak binding to the protein fraction of whole blood serum. Imatinib binds to AGP with high affinity (logK' = 5.8-6.0), while its binding to HSA is much weaker (logK' ≤ 4.0). The computed constants were used to model the distribution of IMA in blood plasma under physiological and 'acute-phase' conditions as well.
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9
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Promising anticancer activity with high selectivity of DNA/plasma protein targeting new phthalazin-1(2H)-one heterocyclic scaffolds. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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The gallium complex KP46 sensitizes resistant leukemia cells and overcomes Bcl-2-induced multidrug resistance in lymphoma cells via upregulation of Harakiri and downregulation of XIAP in vitro. Biomed Pharmacother 2022; 156:113974. [DOI: 10.1016/j.biopha.2022.113974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/28/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022] Open
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11
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Solution speciation and human serum protein binding of indium(III) complexes of 8-hydroxyquinoline, deferiprone and maltol. J Biol Inorg Chem 2022; 27:315-328. [PMID: 35243522 PMCID: PMC8960621 DOI: 10.1007/s00775-022-01935-6] [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: 11/22/2021] [Accepted: 02/18/2022] [Indexed: 11/03/2022]
Abstract
Solution speciation and serum protein binding of selected In(III) complexes bearing O,O and O,N donor sets were studied to provide comparative data for In(III) and analogous Ga(III) complexes. Aqueous stability of the In(III) complexes of maltol, deferiprone, 8-hydroxyquinoline (HQ) and 8-hydroxyquinoline-5-sulfonate (HQS) was characterized by a combined pH-potentiometric and UV–visible spectrophotometric approach. Formation of mono, bis and tris-ligand complexes was observed. The tris-ligand complexes of HQ (InQ3) and deferiprone (InD3) are present in solution in ca. 90% at 10 µM concentration at pH = 7.4, while the tris-maltolato complex (InM3) displays insufficient stability under these conditions. Binding towards human serum albumin (HSA) and (apo)transferrin ((apo)Tf) of InQ3, InD3 and InM3 complexes and Ga(III) analogue of InQ3 (GaQ3) together with InCl3 was investigated by a panel of methods: steady-state and time-resolved spectrofluorometry, UV–visible spectrophotometry and membrane ultrafiltration. Moderate binding of InQ3 to HSA was found (log K′ = 5.0–5.1). InD3 binds to HSA to a much lower extent in comparison to InQ3. ApoTf is able to displace HQ, deferiprone and maltol effectively from their In(III) complexes. Protein binding of non-dissociated InQ3 was also observed at high complex-to-apoTf ratios. Studies conducted with the InQ3/GaQ3 – HSA – Tf ternary systems revealed the more pronounced Tf binding of In(III) via ligand release, while the original GaQ3 scaffold is preferably retained upon protein interactions and significant albumin binding occurs. Significant dissociation of InQ3 was detected in human blood serum as well.
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12
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Parsekar S, Paliwal K, Haldar P, Antharjanam PKS, Kumar M. Synthesis, Characterization, Crystal Structure, DNA and HSA Interactions, and Anticancer Activity of a Mononuclear Cu(II) Complex with a Schiff Base Ligand Containing a Thiadiazoline Moiety. ACS OMEGA 2022; 7:2881-2896. [PMID: 35097283 PMCID: PMC8792924 DOI: 10.1021/acsomega.1c05750] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/30/2021] [Indexed: 05/07/2023]
Abstract
A mononuclear Cu(II) complex [Cu(HL)(o-phen)]·H2O (1) [H3L =, o-phen = 1,10-phenanthroline] was isolated from methanol, and its X-ray single-crystal structure was determined. Frozen glass X-band EPR of 1 in dimethylformamide (DMF) at LNT showed a spectrum that is characteristic of a monomeric tetragonal character with g ∥ = 2.164, g ⊥ = 2.087, A ∥ = 19.08 mT, and A ⊥ ≤ 4 mT. Electronic spectroscopic studies using calf thymus DNA (CT-DNA) showed strong binding affinity of 1 as reflected from its intrinsic binding constant (K b) value of 2.85 × 105 M-1. Competitive behavior of 1 with ethidium bromide (EB) displayed intercalative binding of DNA (K app = 1.3 × 106 M-1). The compound displayed significant oxidative cleavage of pUC19 DNA. The interaction between HSA and complex 1 was examined by employing fluorescence and electronic absorption spectroscopic experiments. The secondary and tertiary structures of HSA were found to be altered as suggested by three-dimensional (3D) fluorescence experiments. The affinity of 1 to bind to HSA was found to be strong as indicated from its value of the binding constant (K a = 2.89 × 105 M-1). Intrinsic fluorescence of the protein was found to be reduced through a mechanism of static quenching as suggested from the k q (2.01 × 1013 M-1 s-1) value, the bimolecular quenching constant. The Förster resonance energy transfer (FRET) process may also be accounted for such a high k q value. The r value (2.85 nm) calculated from FRET theory suggested that the distance between complex 1 (acceptor) and HSA (donor) is quite close. Complex 1 primarily bound to HSA in subdomain IIA as suggested by molecular docking studies. IC50 values (0.80 and 0.43 μM, respectively) obtained from the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay with HeLa and MCF7 cells suggested remarkable in vitro anticancer activity of 1. Nuclear dual staining assays revealed that cell death occurred via apoptosis in HeLa cells and reactive oxygen species (ROS) accumulation caused apoptosis induction. On treatment with a 5 μM dose of 1 in HeLa cells, the cell population significantly increased in the G2/M phase, while it was decreased in G0/G1 and S phases as compared to the control, clearly indicating G2/M phase arrest.
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Affiliation(s)
- Sidhali
U. Parsekar
- Department
of Chemical Engineering, Birla Institute
of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar 403726, Goa, India
| | - Kumudini Paliwal
- Department
of Chemical Engineering, Birla Institute
of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar 403726, Goa, India
| | - Paramita Haldar
- Department
of Chemical Engineering, Birla Institute
of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar 403726, Goa, India
| | | | - Manjuri Kumar
- Department
of Chemical Engineering, Birla Institute
of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar 403726, Goa, India
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Dömötör O, Pivarcsik T, Mészáros JP, Szatmári I, Fülöp F, Enyedy ÉA. Critical factors affecting the albumin binding of half-sandwich Ru(ii) and Rh(iii) complexes of 8-hydroxyquinolines and oligopyridines. Dalton Trans 2021; 50:11918-11930. [PMID: 34374386 DOI: 10.1039/d1dt01700d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
There is significant interest today in the interaction of half-sandwich anticancer organometallic complexes with proteins. It is considered as a crucial factor in the transport and mode of action of these compounds; thus it can affect their overall pharmacological and toxicological profiles. Albumin binding of high stability Ru(ii)(η6-p-cymene) and Rh(iii)(η5-C5Me5) complexes formed with 8-hydroxyquinoline, its 5-chloro-7-((proline-1-yl)methyl) substituted derivative, 2,2'-bipyridine and 1,10-phenanthroline is discussed herein. The interaction with human serum albumin in terms of kinetic aspects, binding strength and possible binding sites was studied in detail by means of various methods such as 1H NMR spectroscopy, UV-visible spectrophotometry, steady-state and time-resolved fluorometry, ultrafiltration and capillary zone electrophoresis. Ru(ii)(η6-p-cymene)(2,2'-bipyridine) and Ru(ii)(η6-p-cymene)(1,10-phenanthroline) complexes do not bind to the protein measurably, most probably due to kinetic reasons. However, other complexes bind significantly to albumin with fairly different kinetics to albumin. The binding affinity towards hydrophobic binding pockets shows correlation with lipophilicity along with the actual charge of the respective complexes. The studied complexes preserve their original structure upon interaction with albumin. Formation constants computed for the binding of these metal complexes to histidine-containing model oligopeptides demonstrated significant ternary complex formation, pointing out the importance of histidine coordination in the binding of these types of complexes.
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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.
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Chatterjee R, Bhattacharya I, Roy S, Purkait K, Koley TS, Gupta A, Mukherjee A. Synthesis, Characterization, and Cytotoxicity of Morpholine-Containing Ruthenium(II) p-Cymene Complexes. Inorg Chem 2021; 60:12172-12185. [PMID: 34346215 DOI: 10.1021/acs.inorgchem.1c01363] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Morpholine motif is an important pharmacophore and, depending on the molecular design, may localize in cellular acidic vesicles. To understand the importance of the presence of pendant morpholine in a metal complex, six bidentate N,O-donor ligands with or without a pendant morpholine unit and their corresponding ruthenium(II) p-cymene complexes (1-6) are synthesized, purified, and structurally characterized by various analytical methods including X-ray diffraction. Complexes 2-4 crystallized in the P21/c space group, whereas 5 and 6 crystallized in the P1̅ space group. The solution stability studies using 1H NMR support instantaneous hydrolysis of the native complexes to form monoaquated species in a solution of 3:7 (v/v) dimethyl sulfoxide-d6 and 20 mM phosphate buffer (pH* 7.4, containing 4 mM NaCl). The monoaquated complexes are stable for at least up to 24 h. The complexes display excellent in vitro antiproliferative activity (IC50 ca. 1-14 μM) in various cancer cell lines, viz., MDA-MB-231, MiaPaCa2, and Hep-G2. The presence of the pendant morpholine does not improve the dose efficacy, but rather, with 2-[[(2,6-dimethylphenyl)imino]methyl]phenol (HL1) and its pendant morpholine analogue (HL3) giving complexes 1 and 3, respectively, the antiproliferative activity was poorer with 3. MDA-MB-231 cells treated with the complexes show that the acidic vesicles remain acidic, but the population of acidic vesicles increases or decreases with time of exposure, as observed from the dispersed red puncta, depending on the complex used. The presence of the 2,6-disubstituted aniline and the naphthyl group seems to improve the antiproliferative dose. The complex treated MDA-MB-231 cells show that cathepsin D, which is otherwise present in the cytosolic lysosomes, translocates to the nucleus as a result of exposure to the complexes. Irrespective of the presence of a morpholine motif, the complexes do not activate caspase-3 to induce apoptosis and seem to favor the necrotic pathway of cell killing.
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15
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Li K, Tian H, Guo A, Jin L, Chen W, Tao B. Gallium (Ga)-strontium (Sr) layered double hydroxide composite coating on titanium substrates for enhanced osteogenic and antibacterial abilities. J Biomed Mater Res A 2021; 110:273-286. [PMID: 34323363 DOI: 10.1002/jbm.a.37284] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 07/17/2021] [Accepted: 07/21/2021] [Indexed: 01/25/2023]
Abstract
Bacterial infection and poor osteogenic capacity can result in the loosing or failure of titanium (Ti)-based implants in the clinic. Therefore, it is urgent to design an effective approach to enhance the osteogenic property and restrict bacterial activity. In this study, a layered double hydroxide (LDH) composed of Ga and Sr ions on Ti substrates by a hydrothermal method, then calcined in 250°C and denoted as LDH250. The scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) were confirmed that the LDH films were successfully formed on the Ti substrates. Importantly, the obtained LDH films can induce an alkaline microenvironment around the Ti surface and regulate the behaviors of osteogenic cells and bacteria. In vitro cellular experiments, the LDH250 can enhance the differentiation of both MC3T3-E1 cells and osteoblasts, stimulate alkaline phosphatase activity (ALP), collagen secretion, and mineralization levels. Meanwhile, antimicrobial assay against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) demonstrated that the LDH250 samples had strong antibacterial abilities, which attributed to the release profile of Ga3+ could act as a "Trojan horse" to destroy the bacterial iron metabolism, inducing of local alkaline environment, and producing reactive oxygen species. Hence, this study provides an effective method for reducing antibacterial infection and enhancing the bone integrative capacity of Ti-based implants for orthopedic applications.
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Affiliation(s)
- Kai Li
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hongchuan Tian
- Department of Orthopedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ai Guo
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Liguo Jin
- College of Chemistry, Nanchang University, Nanchang, Jiangxi, China
| | - Weizhen Chen
- Department of Laboratory Medicine, The First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, Hangzhou, China
| | - Bailong Tao
- Laboratory Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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16
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Kontoghiorghes GJ, Kolnagou A, Demetriou T, Neocleous M, Kontoghiorghe CN. New Era in the Treatment of Iron Deficiency Anaemia Using Trimaltol Iron and Other Lipophilic Iron Chelator Complexes: Historical Perspectives of Discovery and Future Applications. Int J Mol Sci 2021; 22:ijms22115546. [PMID: 34074010 PMCID: PMC8197347 DOI: 10.3390/ijms22115546] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/08/2021] [Accepted: 05/18/2021] [Indexed: 12/11/2022] Open
Abstract
The trimaltol iron complex (International Non-proprietary Name: ferric maltol) was originally designed, synthesised, and screened in vitro and in vivo in 1980–1981 by Kontoghiorghes G.J. following his discovery of the novel alpha-ketohydroxyheteroaromatic (KHP) class of iron chelators (1978–1981), which were intended for clinical use, including the treatment of iron deficiency anaemia (IDA). Iron deficiency anaemia is a global health problem affecting about one-third of the world’s population. Many (and different) ferrous and ferric iron complex formulations are widely available and sold worldwide over the counter for the treatment of IDA. Almost all such complexes suffer from instability in the acidic environment of the stomach and competition from other dietary molecules or drugs. Natural and synthetic lipophilic KHP chelators, including maltol, have been shown in in vitro and in vivo studies to form stable iron complexes, to transfer iron across cell membranes, and to increase iron absorption in animals. Trimaltol iron, sold as Feraccru or Accrufer, was recently approved for clinical use in IDA patients in many countries, including the USA and in EU countries, and was shown to be effective and safe, with a better therapeutic index in comparison to other iron formulations. Similar properties of increased iron absorption were also shown by lipophilic iron complexes of 8-hydroxyquinoline, tropolone, 2-hydroxy-4-methoxypyridine-1-oxide, and related analogues. The interactions of the KHP iron complexes with natural chelators, drugs, metal ions, proteins, and other molecules appear to affect the pharmacological and metabolic effects of both iron and the KHP chelators. A new era in the treatment of IDA and other possible clinical applications, such as theranostic and anticancer formulations and metal radiotracers in diagnostic medicine, are envisaged from the introduction of maltol, KHP, and similar lipophilic chelators.
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Development of new combination anti-leishmanial complexes: Triphenyl Sb(V) mono-hydroxy mono-quinolinolates. J Inorg Biochem 2021; 219:111385. [PMID: 33894637 DOI: 10.1016/j.jinorgbio.2021.111385] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/20/2021] [Accepted: 01/27/2021] [Indexed: 12/18/2022]
Abstract
In seeking to develop single entity combination anti-Leishmanial complexes six heteropletic organometallic Sb(V) hydroxido quinolinolate complexes of general formula [SbPh3(C9H4NORR')(OH)] have been synthesised and characterised, derived from a series of halide substituted quinolinols (8-hydroxyquinolines). Single crystal X-ray diffraction on all the complexes show a common distorted six-coordinate octahedral environment at the Sb(V) centre, with the aryl groups and nitrogen atom of quinolinolate ligand bonding in the equatorial planes, with the two oxygen atoms (hydroxyl and quinolinolate) occupying the axial plane in an almost linear configuration. Each complex was tested for their anti-promastigote activity and mammalian cytotoxicity and a selectivity indices established. The complexes displayed excellent anti-promastigote activity (IC50: 2.03-3.39 μM) and varied mammalian cytotoxicity (IC50: 12.7-46.9 μM), leading to a selectivity index range of 4.52-16.7. All complexes displayed excellent anti-amastigote activity with a percentage infection range of 2.25%-9.00%. All complexes performed substantially better than the parent quinolinols and comparable carboxylate complexes [SbPh3(O2CRR')2] indicating the synergistic role of the Sb(V) and quinolinol moieties in increasing parasite mortality. Two of the complexes [SbPh3(C9H4NOBr2)(OH)] 4, [SbPh3(C9H4NOI2)(OH)] 5, provide an ideal combination of high selective and good activity towards the leishmanial amastigotes and offer the potential as good lead compounds.
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18
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Parsekar SU, Haldar P, Antharjanam PS, Kumar M, Koley AP. Synthesis, characterization, crystal structure, DNA and human serum albumin interactions, as well as antiproliferative activity of a Cu(II) complex containing a Schiff base ligand formed in situ from the Cu(II)‐induced cyclization of 1,5‐bis(salicylidene)thiocarbohydrazide. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6152] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Sidhali U. Parsekar
- Department of Chemical Engineering Birla Institute of Technology and Science‐Pilani, K.K. Birla Goa Campus Zuarinagar India
| | - Paramita Haldar
- Department of Chemical Engineering Birla Institute of Technology and Science‐Pilani, K.K. Birla Goa Campus Zuarinagar India
| | | | - Manjuri Kumar
- Department of Chemical Engineering Birla Institute of Technology and Science‐Pilani, K.K. Birla Goa Campus Zuarinagar India
| | - Aditya P. Koley
- Department of Chemistry Birla Institute of Technology and Science‐Pilani, K.K. Birla Goa Campus Zuarinagar India
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19
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Southcott L, Wang X, Wharton L, Yang H, Radchenko V, Kubeil M, Stephan H, de Guadalupe Jaraquemada-Peláez M, Orvig C. High denticity oxinate-linear-backbone chelating ligand for diagnostic radiometal ions [111In]In3+ and [89Zr]Zr4+. Dalton Trans 2021; 50:3874-3886. [DOI: 10.1039/d0dt04230g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A potentially decadentate oxinate-containing ligand was synthesized and assessed through solution thermodynamics studies, concentration dependent radiolabeling and serum stability assays with [nat/111In]In3+ and [nat/89Zr]Zr4+.
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Affiliation(s)
- Lily Southcott
- Medicinal Inorganic Chemistry Group
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
| | - Xiaozhu Wang
- Medicinal Inorganic Chemistry Group
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
| | - Luke Wharton
- Medicinal Inorganic Chemistry Group
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
| | - Hua Yang
- Life Sciences Division
- TRIUMF
- Vancouver
- Canada
| | - Valery Radchenko
- Life Sciences Division
- TRIUMF
- Vancouver
- Canada
- Department of Chemistry
| | - Manja Kubeil
- Institute of Radiopharmaceutical Cancer Research
- Helmholtz-Zentrum Dresden Rossendorf
- 01328 Dresden
- Germany
| | - Holger Stephan
- Institute of Radiopharmaceutical Cancer Research
- Helmholtz-Zentrum Dresden Rossendorf
- 01328 Dresden
- Germany
| | | | - Chris Orvig
- Medicinal Inorganic Chemistry Group
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
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20
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Kircheva N, Dudev T. Competition between abiogenic and biogenic metal cations in biological systems: Mechanisms of gallium's anticancer and antibacterial effect. J Inorg Biochem 2020; 214:111309. [PMID: 33212396 DOI: 10.1016/j.jinorgbio.2020.111309] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 11/03/2020] [Accepted: 11/08/2020] [Indexed: 11/29/2022]
Abstract
Metal cations are key players in a plethora of essential biological processes. Over the course of evolution specific biological functions have been bestowed upon two dozen of (biogenic) metal species, some of the most frequently found being sodium, potassium, magnesium, calcium, zinc, manganese, iron, and copper. On the other hand, there is a group of less studied abiogenic metals like lithium, strontium and gallium that possess not known functions in living organisms, but, by mimicking the native ions and/or competing with them for binding to key metalloenzymes, may exert beneficial effect on humans in particular medical conditions. This review summarizes and critically examines the mechanisms of gallium's therapeutic action in anticancer and antibacterial therapies by exploiting the tools of molecular modeling and experimental biochemistry. These approaches allow for identifying key factors for Ga3+ beneficial effect such as the electrostatic interactions with the protein ligands, substrates or bacterial siderophores, intramolecular hydrogen bond formation, and pH and dielectric properties of the medium. Several intriguing questions concerning the gallium competition with the native ferric ion have found their answers.
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Affiliation(s)
- Nikoleta Kircheva
- Institute of Optical Materials and Technologies "Acad. J. Malinowski", Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria.
| | - Todor Dudev
- Faculty of Chemistry and Pharmacy, Sofia University "St. Kl. Ohridski", 1164 Sofia, Bulgaria.
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21
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Parsekar SU, Velankanni P, Sridhar S, Haldar P, Mate NA, Banerjee A, Sudhadevi Antharjanam PK, Koley AP, Kumar M. Protein binding studies with human serum albumin, molecular docking and in vitro cytotoxicity studies using HeLa cervical carcinoma cells of Cu(ii)/Zn(ii) complexes containing a carbohydrazone ligand. Dalton Trans 2020; 49:2947-2965. [PMID: 32073070 DOI: 10.1039/c9dt04656a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The interaction of two binuclear mixed ligand Cu(ii) complexes [Cu(o-phen)LCu(OAc)] (1) and [Cu(o-phen)LCu(o-phen)](OAc) (2) (H3L = o-HOC6H4C(H)[double bond, length as m-dash]N-NH-C(OH)[double bond, length as m-dash]N-N[double bond, length as m-dash]C(H)-C6H4OH-o) and a new mononuclear Zn(ii) complex [Zn(HL)(o-phen)(H2O)](OAc)·H2O (3) (H2L = o-HOC6H4-C(H)[double bond, length as m-dash]N-NH-C([double bond, length as m-dash]O)-NH-N[double bond, length as m-dash]C(H)-C6H4OH-o, o-phen = 1,10-phenanthroline, and OAc = CH3COO-) with human serum albumin (HSA) was studied using fluorescence quenching, synchronous and 3D fluorescence measurements and UV-vis spectroscopy. 3D fluorescence studies showed that the HSA structure was altered at the secondary and tertiary levels upon binding with the complexes. This was further supported by the electronic absorption spectral studies of HSA in the absence and presence of the compounds. The average binding distance (r) between HSA and the complexes was obtained by Förster's resonance energy transfer theory. Complex 3 was structurally characterized by X-ray crystallography. Molecular docking studies indicated that all three complexes primarily bind to HSA in subdomain IIA with amino acid residues such as Arg218 and Lys199 which are located at the entrance of Sudlow's site I. The in vitro cytotoxicities of complexes 1-3 against HeLa cells showed promising anticancer activity (IC50 = 3.5, 3.9 and 16.9 μM for 1, 2 and 3, respectively). Live cell time lapse imaging for 1 was done to capture the dynamic behavior of the cells upon treatment with the complex. Cell cycle analysis by flow cytometry with HeLa cells indicated that 1 and 2 induced cell cycle arrest in the G2/M phase while 3 induced arrest in the G0/G1 phase leading to cell death. Compounds 1 and 2 but not 3 induced apoptosis through the mitochondrial pathway as suggested from the relative p53, caspase3 and bcl2 mRNA levels measured by real-time quantitative PCR analysis.
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Affiliation(s)
- Sidhali U Parsekar
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Priyanka Velankanni
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Shruti Sridhar
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India. and Department of Biological Sciences, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Goa 403 726, India
| | - Paramita Haldar
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Nayan A Mate
- Department of Biological Sciences, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Goa 403 726, India
| | - Arnab Banerjee
- Department of Biological Sciences, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Goa 403 726, India
| | - P K Sudhadevi Antharjanam
- Sophisticated Analytical Instrument Facility, Indian Institute of Technology-Madras, Chennai 600 036, India
| | - Aditya P Koley
- Department of Chemistry, Birla Institute of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar, Goa 403 726, India.
| | - Manjuri Kumar
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India.
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22
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Kontoghiorghes GJ, Kontoghiorghe CN. Iron and Chelation in Biochemistry and Medicine: New Approaches to Controlling Iron Metabolism and Treating Related Diseases. Cells 2020; 9:E1456. [PMID: 32545424 PMCID: PMC7349684 DOI: 10.3390/cells9061456] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 02/07/2023] Open
Abstract
Iron is essential for all living organisms. Many iron-containing proteins and metabolic pathways play a key role in almost all cellular and physiological functions. The diversity of the activity and function of iron and its associated pathologies is based on bond formation with adjacent ligands and the overall structure of the iron complex in proteins or with other biomolecules. The control of the metabolic pathways of iron absorption, utilization, recycling and excretion by iron-containing proteins ensures normal biologic and physiological activity. Abnormalities in iron-containing proteins, iron metabolic pathways and also other associated processes can lead to an array of diseases. These include iron deficiency, which affects more than a quarter of the world's population; hemoglobinopathies, which are the most common of the genetic disorders and idiopathic hemochromatosis. Iron is the most common catalyst of free radical production and oxidative stress which are implicated in tissue damage in most pathologic conditions, cancer initiation and progression, neurodegeneration and many other diseases. The interaction of iron and iron-containing proteins with dietary and xenobiotic molecules, including drugs, may affect iron metabolic and disease processes. Deferiprone, deferoxamine, deferasirox and other chelating drugs can offer therapeutic solutions for most diseases associated with iron metabolism including iron overload and deficiency, neurodegeneration and cancer, the detoxification of xenobiotic metals and most diseases associated with free radical pathology.
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Affiliation(s)
- George J. Kontoghiorghes
- Postgraduate Research Institute of Science, Technology, Environment and Medicine, CY-3021 Limassol, Cyprus;
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23
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Notaro A, Jakubaszek M, Koch S, Rubbiani R, Dömötör O, Enyedy ÉA, Dotou M, Bedioui F, Tharaud M, Goud B, Ferrari S, Alessio E, Gasser G. A Maltol‐Containing Ruthenium Polypyridyl Complex as a Potential Anticancer Agent. Chemistry 2020; 26:4997-5009. [DOI: 10.1002/chem.201904877] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 02/14/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Anna Notaro
- Chimie ParisTechPSL UniversityCNRSInstitute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical Biology 75005 Paris France
| | - Marta Jakubaszek
- Chimie ParisTechPSL UniversityCNRSInstitute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical Biology 75005 Paris France
- Institut CuriePSL University, CNRS UMR 144 75248 Paris France
| | - Severin Koch
- Department of ChemistryUniversity of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Riccardo Rubbiani
- Department of ChemistryUniversity of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Orsolya Dömötör
- Department of Inorganic and Analytical ChemistryInterdisciplinary Excellence CentreUniversity of Szeged Dóm tér 7. 6720 Szeged Hungary
| | - Éva A. Enyedy
- Department of Inorganic and Analytical ChemistryInterdisciplinary Excellence CentreUniversity of Szeged Dóm tér 7. 6720 Szeged Hungary
- MTA-SZTE Lendület Functional Metal Complexes Research GroupUniversity of Szeged Dóm tér 7 6720 Szeged Hungary
| | - Mazzarine Dotou
- Chimie ParisTechPSL UniversityCNRSInstitute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical Biology 75005 Paris France
| | - Fethi Bedioui
- Chimie ParisTech, PSL University, CNRSInstitute of Chemistry for Life and Health SciencesTeam Synthèse Electrochimie, Imagerie et Systèmes, Analytiques pour le Diagnostic 75005 Paris France
| | - Mickaël Tharaud
- Université de ParisInstitut de physique du globe de Paris, CNRS 75005 Paris France
| | - Bruno Goud
- Institut CuriePSL University, CNRS UMR 144 75248 Paris France
| | - Stefano Ferrari
- Institute of Molecular Cancer ResearchUniversity of Zurich 8057 Zurich Switzerland
- Institute of Molecular GeneticsCzech Academy of Sciences Videnska 1083 14300 Prague Czech Republic
| | - Enzo Alessio
- Department of Chemical and Pharmaceutical SciencesUniversity of Trieste Via, L. Giorgieri 1 34127 Trieste Italy
| | - Gilles Gasser
- Chimie ParisTechPSL UniversityCNRSInstitute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical Biology 75005 Paris France
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24
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Duffin RN, Blair VL, Kedzierski L, Andrews PC. Alkyl gallium(III) quinolinolates: A new class of highly selective anti-leishmanial agents. Eur J Med Chem 2019; 186:111895. [PMID: 31771825 DOI: 10.1016/j.ejmech.2019.111895] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/15/2019] [Accepted: 11/15/2019] [Indexed: 12/12/2022]
Abstract
A series of eight alkyl gallium complexes of general formulae [GaMe2(L)] and [Ga(Me)2L] have been synthesised, characterised and their antimicrobial activity against bacteria, cancer cells and Leishmania assessed. All eight complexes are novel, with the solid-state structures of all complexes successfully authenticated by single crystal X-ray diffraction. The dimethyl complexes all adopt a four-coordinate tetrahedral confirmation, while the monomethyl complexes are five-coordinate trigonal bipyramidal. All complexes were screened for their anti-bacterial activity either by solution state diffusion, or a solid-state stab test. The five soluble complexes underwent testing against two differing mammalian cell controls, with excellent selectivity observed against COS-7 cells, with an IC50 range of 88.5 μM to ≥100 μM. Each soluble complex was also tested for their anti-cancer capabilities, with no significant activity observed. Excellent activity was exhibited against the protozoan parasite Leishmania major (strain: V121) in both the promastigote and amastigote forms, with IC50 values ranging from 1.11 μM-13.4 μM for their anti-promastigote activity and % infection values of 3.5% ± 0.65-11.5% ± 0.65 for the more clinically relevant amastigote. Selectivity indices for each were found to be in the ranges of 6.61-64.7, with significant selectivity noted for two of the complexes. At minimum, the gallium complexes show a 3-fold enhancement in activity towards the Leishmaniaamastigotes over the parent quinolinols alone.
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Affiliation(s)
- Rebekah N Duffin
- School of Chemistry, Monash University, Clayton, Melbourne, VIC, 3800, Australia
| | - Victoria L Blair
- School of Chemistry, Monash University, Clayton, Melbourne, VIC, 3800, Australia
| | - Lukasz Kedzierski
- Faculty of Veterinary and Agricultural Sciences at the Peter Doherty Institute for Infection and Immunity, 792 Elizabeth Street, Melbourne, 3000, Victoria, Australia
| | - Philip C Andrews
- School of Chemistry, Monash University, Clayton, Melbourne, VIC, 3800, Australia.
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25
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Comparative solution studies and cytotoxicity of gallium(III) and iron(III) complexes of 3-hydroxy-2(1H)-pyridinones. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.04.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Dömötör O, Enyedy ÉA. Binding mechanisms of half-sandwich Rh(III) and Ru(II) arene complexes on human serum albumin: a comparative study. J Biol Inorg Chem 2019; 24:703-719. [PMID: 31300922 PMCID: PMC6682546 DOI: 10.1007/s00775-019-01683-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 06/27/2019] [Indexed: 02/05/2023]
Abstract
Abstract Various half-sandwich ruthenium(II) arene complexes and rhodium(III) arene complexes have been intensively investigated due to their prominent anticancer activity. The interaction of the organometallic complexes of Ru(η6-p-cymene) and Rh(η5-C5Me5) with human serum albumin (HSA) was studied in detail by a combination of various methods such as ultrafiltration, capillary electrophoresis, 1H NMR spectroscopy, fluorometry and UV–visible spectrophotometry in the presence of 100 mM chloride ions. Binding characteristics of the organometallic ions and their complexes with deferiprone, 2-picolinic acid, maltol, 6-methyl-2-picolinic acid and 2-quinaldic acid were evaluated. Kinetic aspects and reversibility of the albumin binding are also discussed. The effect of low-molecular-mass blood components on the protein binding was studied in addition to the interaction of organorhodium complexes with cell culture medium components. The organometallic ions were found to bind to HSA to a high extent via a coordination bond. Release of the bound metal ions was kinetically hindered and could not be induced by the denaturation of the protein. Binding of the Ru(η6-p-cymene) triaqua cation was much slower (ca. 24 h) compared to the rhodium congener (few min), while their complexes interacted with the protein relatively fast (1–2 h). The studied complexes were bound to HSA coordinatively. The highly stable and kinetically inert 2-picolinate Ru(η6-p-cymene) complex bound in an associative manner preserving its original entity, while lower stability complexes decomposed partly or completely upon binding to HSA. Fast, non-specific and high-affinity binding of the complexes on HSA highlights their coordinative interaction with various types of proteins possibly decreasing effective drug concentration. Graphic abstract ![]()
Electronic supplementary material The online version of this article (10.1007/s00775-019-01683-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Orsolya Dömötör
- Department of Inorganic and Analytical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, Dóm tér 7, 6720, Szeged, Hungary.
| | - Éva A Enyedy
- Department of Inorganic and Analytical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, Dóm tér 7, 6720, Szeged, Hungary.
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Kircheva N, Dudev T. Novel Insights into Gallium's Mechanism of Therapeutic Action: A DFT/PCM Study of the Interaction between Ga 3+ and Ribonucleotide Reductase Substrates. J Phys Chem B 2019; 123:5444-5451. [PMID: 31177779 DOI: 10.1021/acs.jpcb.9b03145] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The broadly accepted mechanism of gallium's therapeutic action postulates the inactivation of the upregulated/hyperactive enzyme ribonucleotide reductase (RNR) in cancer cells by substituting the redox-active iron by redox-silent gallium in the enzyme active site. Recently, another hypothesis for the Ga3+ curative effect has been put forward: the metal cation can deactivate the enzyme by entrapping its substrates (nucleotide diphosphates; NDPs) into Ga3+-NDP complexes, lowering the free substrate levels in the cell. Several questions arise: Does gallium readily form complexes with NDPs? What are the preferable modes of metal binding to NDPs? Does, and if so, to what extent, the metal binding alter the native conformation of the substrate, thus influencing the process of substrate-enzyme recognition? Here, by employing density functional theory (DFT)/polarizable continuum model (PCM) calculations, we attempt to answer these questions. The results, which are in line with the available experimental data, lay support to the recent hypothesis about the curative effect of gallium, revealing that, by engaging the free NDPs in forming metal complexes, on the one side, and producing metal constructs that are not/poorly recognizable by the host enzyme, on the other side, gallium deprives RNR from its substrates, thus reducing the enzyme activity in malignant cells.
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Affiliation(s)
- Nikoleta Kircheva
- Faculty of Chemistry and Pharmacy , Sofia University , 1164 Sofia , Bulgaria
| | - Todor Dudev
- Faculty of Chemistry and Pharmacy , Sofia University , 1164 Sofia , Bulgaria
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Gan N, Sun Q, Tang P, Wu D, Xie T, Zhang Y, Li H. Determination of interactions between human serum albumin and niraparib through multi-spectroscopic and computational methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 206:126-134. [PMID: 30096696 DOI: 10.1016/j.saa.2018.07.100] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 07/25/2018] [Accepted: 07/31/2018] [Indexed: 06/08/2023]
Abstract
The interactions between 2-{4-[(3S)-piperidin-3-yl] phenyl}-2H-indazole-7-carboxamide (niraparib) and human serum albumin (HSA) were investigated through fluorescence and computational studies. Fluorescence experiments showed that the static quenching mechanism and the binding constant of the HSA-niraparib system at a single binding site was approximately 4 × 104 L mol-1. Thermodynamic constants indicated that the binding of niraparib to HSA was mainly driven by electrostatic interactions. Competition experiments and molecular docking simulations revealed that niraparib bound to site III of HSA. Synchronous fluorescence and Fourier transform infrared spectroscopy (FT-IR) results suggested that interactions between niraparib and HSA could affect the conformation and microenvironment of HSA. Circular dichroism (CD) measurements revealed that the α-helix contents of HSA negligibly increased after binding with niraparib. Molecular dynamics simulations demonstrated the stability of the binary HSA-niraparib system and confirmed that electrostatic forces accounted for the dominant contribution to system energy between HSA and niraparib.
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Affiliation(s)
- Na Gan
- School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Qiaomei Sun
- School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Peixiao Tang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China.
| | - Di Wu
- Key Laboratory of Meat Processing of Sichuan, College of Pharmacy and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Tonghui Xie
- School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China.
| | - Yongkui Zhang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China
| | - Hui Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China
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29
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Matos CP, Yildizhan Y, Adiguzel Z, Pavan FR, Campos DL, Pessoa JC, Ferreira LP, Tomaz AI, Correia I, Acilan C. New ternary iron(iii) aminobisphenolate hydroxyquinoline complexes as potential therapeutic agents. Dalton Trans 2019; 48:8702-8716. [DOI: 10.1039/c9dt01193e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Fe(iii)-Aminobisphenolate hydroxyquinoline complexes are active anticancer drug candidates in the low micromolar range, displaying apoptosis as the mode of cell death.
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Affiliation(s)
- Cristina P. Matos
- Centro de Química Estrutural
- Departamento de Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
| | - Yasemin Yildizhan
- TUBITAK
- Marmara Research Center
- Genetic Engineering and Biotechnology Institute
- Gebze/Kocaeli
- Turkey
| | - Zelal Adiguzel
- TUBITAK
- Marmara Research Center
- Genetic Engineering and Biotechnology Institute
- Gebze/Kocaeli
- Turkey
| | | | | | - João Costa Pessoa
- Centro de Química Estrutural
- Departamento de Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
| | | | - Ana Isabel Tomaz
- Centro de Química Estrutural
- Faculdade de Ciências
- Universidade de Lisboa
- 1749-016 Lisbon
- Portugal
| | - Isabel Correia
- Centro de Química Estrutural
- Departamento de Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
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30
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Wang X, Jaraquemada-Peláez MDG, Rodríguez-Rodríguez C, Cao Y, Buchwalder C, Choudhary N, Jermilova U, Ramogida CF, Saatchi K, Häfeli UO, Patrick BO, Orvig C. H4octox: Versatile Bimodal Octadentate Acyclic Chelating Ligand for Medicinal Inorganic Chemistry. J Am Chem Soc 2018; 140:15487-15500. [DOI: 10.1021/jacs.8b09964] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xiaozhu Wang
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - María de Guadalupe Jaraquemada-Peláez
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Cristina Rodríguez-Rodríguez
- Center for Comparative Medicine, 4145 Wesbrook Mall, Vancouver, British Columbia V6T 1W5, Canada
- Department of Physics and Astronomy, University of British Columbia, 6224 Agronomy Road, Vancouver, British Columbia V6T 1Z1, Canada
| | - Yang Cao
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Christian Buchwalder
- Faculty of Pharmaceutical Sciences, University of British Columbia, 2405 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Neha Choudhary
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
- Life Sciences Division, TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - Una Jermilova
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
- Life Sciences Division, TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - Caterina F. Ramogida
- Life Sciences Division, TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Katayoun Saatchi
- Faculty of Pharmaceutical Sciences, University of British Columbia, 2405 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Urs O. Häfeli
- Faculty of Pharmaceutical Sciences, University of British Columbia, 2405 Wesbrook Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Brian O. Patrick
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Chris Orvig
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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31
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Munteanu AC, Badea M, Olar R, Silvestro L, Mihaila M, Brasoveanu LI, Musat MG, Andries A, Uivarosi V. Cytotoxicity studies, DNA interaction and protein binding of new Al (III), Ga (III) and In (III) complexes with 5-hydroxyflavone. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4579] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Alexandra-Cristina Munteanu
- Department of General and Inorganic Chemistry, Faculty of Pharmacy; Carol Davila University of Medicine and Pharmacy; 6 Traian Vuia Str Bucharest 020956 Romania
| | - Mihaela Badea
- Department of Inorganic Chemistry, Faculty of Chemistry; University of Bucharest; 90-92 Panduri Str Bucharest 050663 Romania
| | - Rodica Olar
- Department of Inorganic Chemistry, Faculty of Chemistry; University of Bucharest; 90-92 Panduri Str Bucharest 050663 Romania
| | - Luigi Silvestro
- PharmaServ. International SRL; 52 Sabinelor Str Bucharest 050853 Romania
| | - Mirela Mihaila
- Center of Immunology; Stefan S. Nicolau Institute of Virology; 285 Mihai Bravu Ave Bucharest 030304 Romania
| | - Lorelei Irina Brasoveanu
- Center of Immunology; Stefan S. Nicolau Institute of Virology; 285 Mihai Bravu Ave Bucharest 030304 Romania
| | - Mihaela Georgiana Musat
- Department of Biochemistry, Faculty of Pharmacy; Carol Davila University of Medicine and Pharmacy; 6 Traian Vuia Str Bucharest 020956 Romania
| | - Adrian Andries
- Department of Industrial Drugs and Pharmaceutical Biotechnology, Faculty of Pharmacy; Carol Davila University of Medicine and Pharmacy; 6 Traian Vuia Str. Bucharest 020956 Romania
| | - Valentina Uivarosi
- Department of General and Inorganic Chemistry, Faculty of Pharmacy; Carol Davila University of Medicine and Pharmacy; 6 Traian Vuia Str Bucharest 020956 Romania
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32
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Liu W, Wang Z, Hou JG, Zhou YD, He YF, Jiang S, Wang YP, Ren S, Li W. The Liver Protection Effects of Maltol, a Flavoring Agent, on Carbon Tetrachloride-Induced Acute Liver Injury in Mice via Inhibiting Apoptosis and Inflammatory Response. Molecules 2018; 23:molecules23092120. [PMID: 30142916 PMCID: PMC6225187 DOI: 10.3390/molecules23092120] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 08/19/2018] [Accepted: 08/21/2018] [Indexed: 12/18/2022] Open
Abstract
The purpose of this research was to evaluate whether maltol could protect from hepatic injury induced by carbon tetrachloride (CCl4) in vivo by inhibition of apoptosis and inflammatory responses. In this work, maltol was administered at a level of 100 mg/kg for 15 days prior to exposure to a single injection of CCl4 (0.25%, i.p.). The results clearly indicated that the intrapulmonary injection of CCl4 resulted in a sharp increase in serum aspartate transaminase (AST) and alanine transaminase (ALT) activities, tumor necrosis factor-α (TNF-α), irreducible nitric oxide synthase (iNOS), nuclear factor-kappa B (NF-κB) and interleukin-1β (IL-1β) levels. Histopathological examination demonstrated severe hepatocyte necrosis and the destruction of architecture in liver lesions. Immunohistochemical staining and western blot analysis suggested an accumulation of iNOS, NF-κB, IL-1β and TNF-α expression. Maltol, when administered to mice for 15 days, can significantly improve these deleterious changes. In addition, TUNEL and Hoechst 33258 staining showed that a liver cell nucleus of a model group diffused uniform fluorescence following CCl4 injection. Maltol pretreatment groups did not show significant cell nuclear condensation and fragmentation, indicating that maltol inhibited CCl4-induced cell apoptosis. By evaluating the liver catalase (CAT), glutathione (GSH), superoxide dismutase (SOD) activity, and further using a single agent to evaluate the oxidative stress in CCl4-induced hepatotoxicity by immunofluorescence staining, maltol dramatically attenuated the reduction levels of hepatic CAT, GSH and SOD, and the over-expression levels of CYP2E1 and HO-1. In the mouse model of CCl4-induced liver injury, we have demonstrated that the inflammatory responses were inhibited, the serum levels of ALT and AST were reduced, cell apoptosis was suppressed, and liver injury caused by CCl4 was alleviated by maltol, demonstrating that maltol may be an efficient hepatoprotective agent.
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Affiliation(s)
- Wei Liu
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Zi Wang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Jin-Gang Hou
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
- Intelligent Synthetic Biology Center, Daejeon 34141, Korea.
| | - Yan-Dan Zhou
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Yu-Fang He
- College of Management, Changchun University of Chinese Medicine, Changchun 130117, China.
| | - Shuang Jiang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Ying-Ping Wang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
- National & Local Joint Engineering Research Center for Ginseng Breeding and Development, Changchun 130118, China.
| | - Shen Ren
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Wei Li
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
- National & Local Joint Engineering Research Center for Ginseng Breeding and Development, Changchun 130118, China.
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33
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Mukhopadhyay S, Singh RS, Paitandi RP, Sharma G, Koch B, Pandey DS. Influence of substituents on DNA and protein binding of cyclometalated Ir(iii) complexes and anticancer activity. Dalton Trans 2018. [PMID: 28640302 DOI: 10.1039/c7dt01015j] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Synthesis of terpyridyl based ligands 3-([2,2':6',2''-terpyridin]-4'-yl)-7-methoxy-2-(methylthio)-quinolone, (L1); 3-([2,2':6',2''-terpyridin]-4'-yl)-6-methoxyquinolin-2(1H)-one, (L2); 3-([2,2'-:6',2''-terpyridin]-4'-yl)-6-methylquinolin-2(1H)-one (L3) and cyclometalated iridium(iii) complexes [[Ir(ppy)2L1]+PF6- (1), [Ir(ppy)2L2]+PF6- (2), [Ir(ppy)2L3]+PF6- (3) (2-phenylpyridine = Hppy)] involving these ligands has been described. The ligands L1-L3 and complexes 1-3 have been thoroughly characterized by elemental analyses, spectral studies (IR, 1H, 13C NMR, UV/vis and fluorescence) ESI-MS, and the structure of 3 has been unambiguously authenticated by single crystal X-ray analyses. UV/vis, fluorescence and circular dichroism spectroscopic studies showed rather efficient binding of 1 with CT-DNA (calf thymus DNA) and BSA (bovine serum albumin) relative to 2 and 3. Molecular docking studies unveiled binding of 1-3 with minor groove of CT-DNA via van der Waal's forces and electrostatically with the hydrophobic moiety of HSA (human serum albumin). The ligands and complexes exhibited moderate cytotoxicity towards MDA-MB-231 (breast cancer cell line) and significant influence on HeLa (cervical cancer cell line) cells. Cytotoxicity, morphological changes, and apoptosis have been followed by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromide) assay, Hoechst 33342/PI (PI = propidium iodide) staining, cell cycle analysis by FACS (fluorescence activated cell sorting), and ROS (reactive oxygen species) generation by DCFH-DA (dichlorodihydrofluorescein diacetate) dye. Confocal microscopy images revealed that the drug efficiently initiates apoptosis in the cell cytosol. The IC50 values showed superior cytotoxicity of 1-3 against the HeLa cell line relative to cisplatin, and their ability to induce apoptosis is in the order 1 > 2 > 3.
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Affiliation(s)
- Sujay Mukhopadhyay
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, U.P., India.
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Comparative studies on the human serum albumin binding of the clinically approved EGFR inhibitors gefitinib, erlotinib, afatinib, osimertinib and the investigational inhibitor KP2187. J Pharm Biomed Anal 2018; 154:321-331. [PMID: 29567575 DOI: 10.1016/j.jpba.2018.03.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 03/03/2018] [Accepted: 03/05/2018] [Indexed: 11/27/2022]
Abstract
Binding interactions between human serum albumin (HSA) and four approved epidermal growth factor receptor (EGFR) inhibitors gefitinib (GEF), erlotinib (ERL), afatinib (AFA), osimertinib (OSI), as well as the experimental drug KP2187, were investigated by means of spectrofluorometric and molecular modelling methods. Steady-state and time resolved spectrofluorometric techniques were carried out, including direct quenching of protein fluorescence and site marker displacement measurements. Proton dissociation processes and solvent dependent fluorescence properties were investigated as well. The EGFR inhibitors were predominantly presented in their single protonated form (HL+) at physiological pH except ERL, which is charge-neutral. Significant solvent dependent fluorescence properties were found for GEF, ERL and KP2187, namely their emission spectra show strong dependence on the polarity and the hydrogen bonding ability of the solvents. The inhibitors proved to be bound at site I of HSA (in subdomain IIA) in a weak-to-moderate fashion (logK' 3.9-4.9) using spectrofluorometry. OSI (logK' 4.3) and KP2187 can additionally bind in site II (in subdomain IIIA), while GEF, ERL and AFA clearly show no interaction here. Docking methods qualitatively confirmed binding site preferences of compounds GEF and KP2187, and indicated that they probably bind to HSA in their neutral forms. Binding constants calculated on the basis of the various experimental data indicate a weak-to-moderate binding on HSA, only OSI exhibits somewhat higher affinity towards this protein. However, model calculations performed at physiological blood concentrations of HSA resulted in high (ca. 90%) bound fractions for the inhibitors, highlighting the importance of plasma protein binding.
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35
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Mjos KD, Cawthray JF, Polishchuk E, Abrams MJ, Orvig C. Gallium(iii) and iron(iii) complexes of quinolone antimicrobials. Dalton Trans 2018; 45:13146-60. [PMID: 27315225 DOI: 10.1039/c6dt01315e] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Iron is an essential nutrient for many microbes. According to the "Trojan Horse Hypothesis", biological systems have difficulties distinguishing between Fe(3+) and Ga(3+), which constitutes the antimicrobial efficacy of the gallium(iii) ion. Nine novel tris(quinolono)gallium(iii) complexes and their corresponding iron(iii) analogs have been synthesized and fully characterized. Quinolone antimicrobial agents from three drug generations were used in this study: ciprofloxacin, enoxacin, fleroxacin, levofloxacin, lomefloxacin, nalidixic acid, norfloxacin, oxolinic acid, and pipemidic acid. The antimicrobial efficacy of the tris(quinolono)gallium(iii) complexes was studied against E. faecalis and S. aureus (both Gram-positive), as well as E. coli, K. pneumonia, and P. aeruginosa (all Gram-negative) in direct comparison to the tris(quinolono)iron(iii) complexes and the corresponding free quinolone ligands at various concentrations. For the tris(quinolono)gallium(iii) complexes, no combinational antimicrobial effects between Ga(3+) and the quinolone antimicrobial agents were observed.
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Affiliation(s)
- Katja Dralle Mjos
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
| | - Jacqueline F Cawthray
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
| | - Elena Polishchuk
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
| | - Michael J Abrams
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
| | - Chris Orvig
- Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
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Holtkamp HU, Movassaghi S, Morrow SJ, Kubanik M, Hartinger CG. Metallomic study on the metabolism of RAPTA-C and cisplatin in cell culture medium and its impact on cell accumulation. Metallomics 2018; 10:455-462. [DOI: 10.1039/c8mt00024g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The different extracellular speciation of cisplatin and the organoruthenium developmental anticancer agent RAPTA-C impacts the accumulation in cancer cells.
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Affiliation(s)
- Hannah U. Holtkamp
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - Sanam Movassaghi
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - Stuart J. Morrow
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - Mario Kubanik
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
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Movassaghi S, Hanif M, Holtkamp HU, Söhnel T, Jamieson SMF, Hartinger CG. Making organoruthenium complexes of 8-hydroxyquinolines more hydrophilic: impact of a novel l-phenylalanine-derived arene ligand on the biological activity. Dalton Trans 2018; 47:2192-2201. [DOI: 10.1039/c7dt04451h] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Introduction of an l-phenylalanine-derived arene ligand leads to more hydrophilic organoruthenium(8-oxyquinolinato) anticancer agents.
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Affiliation(s)
- Sanam Movassaghi
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - Muhammad Hanif
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - Hannah U. Holtkamp
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - Tilo Söhnel
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
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38
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39
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Synthesis, characterization and biological activity of gallium(III) complexes with non-symmetrical NO-donor Schiff bases. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.12.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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40
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Kubanik M, Holtkamp H, Söhnel T, Jamieson SMF, Hartinger CG. Impact of the Halogen Substitution Pattern on the Biological Activity of Organoruthenium 8-Hydroxyquinoline Anticancer Agents. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00868] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Mario Kubanik
- School of Chemical Sciences and ‡Auckland
Cancer Society
Research Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Hannah Holtkamp
- School of Chemical Sciences and ‡Auckland
Cancer Society
Research Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Tilo Söhnel
- School of Chemical Sciences and ‡Auckland
Cancer Society
Research Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Stephen M. F. Jamieson
- School of Chemical Sciences and ‡Auckland
Cancer Society
Research Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Christian G. Hartinger
- School of Chemical Sciences and ‡Auckland
Cancer Society
Research Centre, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
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41
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Mukhopadhyay S, Gupta RK, Paitandi RP, Rana NK, Sharma G, Koch B, Rana LK, Hundal MS, Pandey DS. Synthesis, Structure, DNA/Protein Binding, and Anticancer Activity of Some Half-Sandwich Cyclometalated Rh(III) and Ir(III) Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00475] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | - Love Karan Rana
- Department
of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
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42
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Schreiber-Brynzak E, Klapproth E, Unger C, Lichtscheidl-Schultz I, Göschl S, Schweighofer S, Trondl R, Dolznig H, Jakupec MA, Keppler BK. Three-dimensional and co-culture models for preclinical evaluation of metal-based anticancer drugs. Invest New Drugs 2015; 33:835-47. [PMID: 26091914 DOI: 10.1007/s10637-015-0260-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 06/02/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Hypoxic and necrotic regions that accrue within solid tumors in vivo are known to be associated with metastasis formation, radio- and chemotherapy resistance, and drug metabolism. Therefore, integration of these tumor characteristics into in vitro drug screening models is advantageous for any reliable investigation of the anticancer activity of novel drug candidates. In general, usage of cell culture models with in vivo like characteristics has become essential in preclinical drug studies and allows evaluation of complex problems such as tumor selectivity and anti-invasive properties of the drug candidates. MATERIALS AND METHODS In this study, we investigated the anticancer activity of clinically approved, investigational and experimental drugs based on platinum (cisplatin, oxaliplatin and KP1537), gallium (KP46), ruthenium (KP1339) and lanthanum (KP772) in different cell culture models such as monolayers, multicellular spheroids, as well as invasion and metastasis models. Results Application of the Alamar Blue assay to multicellular spheroids and a spheroid-based invasion assay resulted in an altered rating of compounds with regard to their cytotoxicity and ability to inhibit invasion when compared with monolayer-based cytotoxicity and transwell assays. For example, the gallium-based drug candidate KP46 showed in spheroid cultures significantly enhanced properties to inhibit protrusion formation and fibroblast mediated invasiveness, and improved cancer cell selectivity. CONCLUSION Taken together, our results demonstrate the advantages of spheroid-based assays and underline the necessity of using different experimental models for reliable preclinical investigations assessing and better predicting the anticancer potential of new compounds.
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Affiliation(s)
- Ekaterina Schreiber-Brynzak
- University of Vienna, Faculty of Chemistry, Institute of Inorganic Chemistry, Waehringer Str. 42, A-1090, Vienna, Austria
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43
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Trudu F, Amato F, Vaňhara P, Pivetta T, Peña-Méndez E, Havel J. Coordination compounds in cancer: Past, present and perspectives. J Appl Biomed 2015. [DOI: 10.1016/j.jab.2015.03.003] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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44
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Zhang HR, Liu YC, Meng T, Qin QP, Tang SF, Chen ZF, Zou BQ, Liu YN, Liang H. Cytotoxicity, DNA binding and cell apoptosis induction of a zinc(ii) complex of HBrQ. MEDCHEMCOMM 2015. [DOI: 10.1039/c5md00406c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A zinc(ii) complex of HBrQ showed higher in vitro antitumor activity. It induced cell apoptosis in BEL-7404 cells via G2 phase arrest, led to mitochondria dysfunction and activation of caspase cascade. The central zinc(ii) should play a key role to enhance the antitumor effect
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Affiliation(s)
- Hai-Rong Zhang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- PR China
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
| | - Yan-Cheng Liu
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- PR China
| | - Ting Meng
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- PR China
| | - Qi-Pin Qin
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- PR China
| | - Shang-Feng Tang
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- PR China
| | - Zhen-Feng Chen
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- PR China
| | - Bi-Qun Zou
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin
- PR China
| | - You-Nian Liu
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- PR China
| | - Hong Liang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- PR China
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources
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