1
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San Juan JA, Chakarawet K, He Z, Fernandez RL, Stevenson MJ, Harder NHO, Janisse SE, Wang LP, Britt RD, Heffern MC. Copper(II) Affects the Biochemical Behavior of Proinsulin C-peptide by Forming Ternary Complexes with Serum Albumin. J Am Chem Soc 2023. [PMID: 37486968 DOI: 10.1021/jacs.3c04599] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
Peptide hormones are essential signaling molecules with therapeutic importance. Identifying regulatory factors that drive their activity gives important insight into their mode of action and clinical development. In this work, we demonstrate the combined impact of Cu(II) and the serum protein albumin on the activity of C-peptide, a 31-mer peptide derived from the same prohormone as insulin. C-peptide exhibits beneficial effects, particularly in diabetic patients, but its clinical use has been hampered by a lack of mechanistic understanding. We show that Cu(II) mediates the formation of ternary complexes between albumin and C-peptide and that the resulting species depend on the order of addition. These ternary complexes notably alter peptide activity, showing differences from the peptide or Cu(II)/peptide complexes alone in redox protection as well as in cellular internalization of the peptide. In standard clinical immunoassays for measuring C-peptide levels, the complexes inflate the quantitation of the peptide, suggesting that such adducts may affect biomarker quantitation. Altogether, our work points to the potential relevance of Cu(II)-linked C-peptide/albumin complexes in the peptide's mechanism of action and application as a biomarker.
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Affiliation(s)
- Jessica A San Juan
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Khetpakorn Chakarawet
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Zhecheng He
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Rebeca L Fernandez
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Michael J Stevenson
- Department of Chemistry, University of San Francisco, 2130 Fulton Street, San Francisco, California 94117, United States
| | - Nathaniel H O Harder
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Samuel E Janisse
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Lee-Ping Wang
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - R David Britt
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Marie C Heffern
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
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2
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Date T, Kuche K, Ghadi R, Kumar P, Jain S. Understanding the Role of Axial Ligands in Modulating the Biopharmaceutical Outcomes of Cisplatin(IV) Derivatives. Mol Pharm 2022; 19:1325-1337. [PMID: 35437994 DOI: 10.1021/acs.molpharmaceut.1c00844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cisplatin is a platinum (Pt)-based anticancer drug with broad-scale clinical utility. However, due to its hydrophilic nature and high kinetic reactivity, it offers numerous drug delivery challenges. Limitations such as severe systemic toxicities, chemoresistance, extensive cisplatin-plasma protein interaction, and limited cellular drug uptake reduce the therapeutic impact of cisplatin therapy. Cisplatin(IV) prodrug formation can effectively resolve these challenges. The selection of axial ligands could play a key role in determining the fate of cisplatin(IV) prodrugs by modulating the therapeutic and biopharmaceutical outcomes of therapy. Hereby, three cisplatin(IV) derivatives were developed utilizing valproate, tocopherol, and chlorambucil as axial ligands, and their biopharmaceutical performance was compared along with cisplatin. The impact of cisplatin(IV) derivative formation on their kinetic stability, drug-albumin interaction, cytotoxicity profile, cellular uptake pattern, self-assembling behavior, hemotoxicity, and tumor biodistribution pattern was analyzed to establish the correlation between the structural properties of cisplatin(IV) agents and their biopharmaceutical outcomes. The kinetic inertness of the designed cisplatin(IV) compounds helped in minimizing their plasma protein interactions and ensuring their stability in the blood environment. The lipophilicity enhancement due to Pt(IV) prodrug formation critically helped in enhancing the cellular drug uptake and reduced the dependence on transporters for drug uptake. The lipophilicity and activity of axial ligands were the key drivers governing the biopharmaceutical performance of the Pt(IV) derivatives. The properties of the axial ligand, such as its therapeutic activity, chemical backbone, and functional groups present in its structure, were the critical factors determining their plasma protein interaction, cellular uptake, anticancer activity, and self-assembly pattern. Cisplatin(IV) derivative formation further improved the amount of platinum accumulated in tumors after intravenous injection compared to free cisplatin therapy (2.7-5.4 folds increment) and reduced drug-erythrocyte interactions. Overall, the results highlighted the potential of cisplatin(IV) agents in resolving cisplatin drug delivery challenges and denoted the critical role of axial ligand selection in Pt(IV) prodrug designing.
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Affiliation(s)
- Tushar Date
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Sector 67, Mohali, Punjab 160062, India
| | - Kaushik Kuche
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Sector 67, Mohali, Punjab 160062, India
| | - Rohan Ghadi
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Sector 67, Mohali, Punjab 160062, India
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Sanyog Jain
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Sector 67, Mohali, Punjab 160062, India
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3
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Kumari N, Mathe VL, Krishna CM, Dongre PM. BSA-drug-ZnO-PEI conjugates interaction with glycans of gp60 endothelial cell receptor protein for targeted drug delivery: a comprehensive spectroscopic study. J Biomol Struct Dyn 2021; 40:9253-9269. [PMID: 34018472 DOI: 10.1080/07391102.2021.1925155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The zinc oxide (ZnO) nanoparticles (NPs) have several biomedical applications such as drug delivery, bio-imaging, and biomedical research. ZnO NPs were remedied with polyethyleneimine (PEI) and modified with bovine serum albumin (BSA). Two anticancer drugs - Cisplatin (CIS) and Gemcitabine (GEM) were used in conjugation with BSA. BSA-ZnO-PEI (conjugate 1), BSA-CIS-ZnO-PEI (conjugate 2), and BSA-GEM-ZnO-PEI (conjugate 3) can be used for targeted drug delivery via glycans - N-acetylneuraminic acid (NANA), L-fucose (FUC), N-acetyl glucosamine (NAG), D-mannose (MAN), and D-galactose (GAL), of albumin binding membrane receptor protein (gp60). Considerable interaction and the strong binding of conjugate 2 and conjugate 3 with NANA were observed by UV-visible absorption and fluorescence spectra. The electrostatic stability of conjugate 2 and conjugate 3 with NANA was considerably increased in comparison to conjugate 1 as evident with zeta potential values. The fluorescence quenching data (Ksv and kq) and binding parameters (K and n) of BSA-CIS, BSA-GEM, conjugate 2, and conjugate 3 with NANA and FUC attributes to the strong binding. Amide I and amide III bands of the Raman signal suggested insignificant loss in alpha-helical and beta-sheet content of conjugate 2 and conjugate 3 with NANA and FUC. Therefore, the present study is going to assist in the comprehensive development of conjugates for targeted drug delivery based on the differential glycation pattern of gp60 protein.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Neha Kumari
- Department of Biophysics, University of Mumbai, Mumbai, Maharashtra, India.,Department of Physics, Savitribai Phule Pune University, Ganeshkhind Pune, Maharashtra, India
| | - V L Mathe
- Department of Physics, Savitribai Phule Pune University, Ganeshkhind Pune, Maharashtra, India
| | - C Murali Krishna
- Advanced Centre for Treatment Research and Education in Cancer (ACTREC), Tata Memorial Centre (TMC), Navi Mumbai, Maharashtra, India
| | - P M Dongre
- Department of Biophysics, University of Mumbai, Mumbai, Maharashtra, India
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4
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Pentafluorophenyl Platinum(II) Complexes of PTA and its N-Allyl and N-Benzyl Derivatives: Synthesis, Characterization and Biological Activity. MATERIALS 2019; 12:ma12233907. [PMID: 31779206 PMCID: PMC6926962 DOI: 10.3390/ma12233907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/19/2019] [Accepted: 11/22/2019] [Indexed: 12/28/2022]
Abstract
From the well-known 1,3,5-triaza-phosphaadamantane (PTA, 1a), the novel N-allyl and N-benzyl tetrafuoroborate salts 1-allyl-1-azonia-3,5-diaza-7-phosphaadamantane (APTA(BF4), 1b) and 1-benzyl-1-azonia-3,5-diaza-7-phosphaadamantane (BzPTA(BF4), 1c) were obtained. These phosphines were then allowed to react with (Pt(μ-Cl)(C6F5)(tht))2 (tht = tetrahydrothiophene) affording the water soluble Pt(II) complexes trans-(PtCl(C6F5)(PTA)2) (2a) and its bis-cationic congeners trans-(PtCl(C6F5)(APTA)2)(BF4)2 (2b) and trans-(PtCl(C6F5)(BzPTA)2)(BF4)2 (2c). The compounds were fully characterized by multinuclear NMR, ESI-MS, elemental analysis and (for 2a) also by single crystal X-ray diffraction, which proved the trans configuration of the phosphine ligands. Furthermore, in order to evaluate the cytotoxic activities of all complexes the normal human dermal fibroblast (NHDF) cell culture were used. The antineoplastic activity of the investigated compounds was checked against the human lung carcinoma (A549), epithelioid cervix carcinoma (HeLa) and breast adenocarcinoma (MCF-7) cell cultures. Interactions between the complexes and human serum albumin (HSA) using fluorescence spectroscopy and circular dichroism spectroscopy (CD) were also investigated.
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5
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Sun B, Sundaraneedi MK, Southam HM, Poole RK, Musgrave IF, Keene FR, Collins JG. Synthesis and biological properties of tetranuclear ruthenium complexes containing the bis[4(4′-methyl-2,2′-bipyridyl)]-1,7-heptane ligand. Dalton Trans 2019; 48:14505-14515. [DOI: 10.1039/c9dt03221e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The non-linear polypyridylruthenium(ii) complex (Rubb7-TNL) exhibited good antimicrobial activity, but surprisingly was also highly active against cancer cells. The results suggestRubb7-TNLmay have potential as a new anticancer agent.
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Affiliation(s)
- Biyun Sun
- School of Science
- University of New South Wales Canberra
- Australian Defence Force Academy
- Canberra
- Australia
| | - Madhu K. Sundaraneedi
- School of Science
- University of New South Wales Canberra
- Australian Defence Force Academy
- Canberra
- Australia
| | - Hannah M. Southam
- Department of Molecular Biology and Biotechnology
- The University of Sheffield
- Sheffield
- UK
| | - Robert K. Poole
- Department of Molecular Biology and Biotechnology
- The University of Sheffield
- Sheffield
- UK
| | - Ian F. Musgrave
- Discipline of Pharmacology
- Adelaide Medical School
- University of Adelaide
- Adelaide
- Australia
| | - F. Richard Keene
- School of Physical Sciences
- University of Adelaide
- Adelaide
- Australia
- Australian Institute of Tropical Health & Medicine/Centre for Molecular Therapeutics
| | - J. Grant Collins
- School of Science
- University of New South Wales Canberra
- Australian Defence Force Academy
- Canberra
- Australia
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6
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Sun B, Musgrave IF, Day AI, Heimann K, Keene FR, Collins JG. Eukaryotic Cell Toxicity and HSA Binding of [Ru(Me 4phen)(bb 7)] 2+ and the Effect of Encapsulation in Cucurbit[10]uril. Front Chem 2018; 6:595. [PMID: 30560120 PMCID: PMC6287197 DOI: 10.3389/fchem.2018.00595] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 11/14/2018] [Indexed: 12/12/2022] Open
Abstract
The toxicity (IC50) of a series of mononuclear ruthenium complexes containing bis[4(4′-methyl-2,2′-bipyridyl)]-1,n-alkane (bbn) as a tetradentate ligand against three eukaryotic cell lines—BHK (baby hamster kidney), Caco-2 (heterogeneous human epithelial colorectal adenocarcinoma) and Hep-G2 (liver carcinoma)—have been determined. The results demonstrate that cis-α-[Ru(Me4phen)(bb7)]2+ (designated as α-Me4phen-bb7, where Me4phen = 3,4,7,8-tetramethyl-1,10-phenanthroline) showed little toxicity toward the three cell lines, and was considerably less toxic than cis-α-[Ru(phen)(bb12)]2+ (α-phen-bb12) and the dinuclear complex [{Ru(phen)2}2{μ-bb12}]4+. Fluorescence spectroscopy was used to study the binding of the ruthenium complexes with human serum albumin (HSA). The binding of α-Me4phen-bb7 to the macrocyclic host molecule cucurbit[10]uril (Q[10]) was examined by NMR spectroscopy. Large upfield 1H NMR chemical shift changes observed for the methylene protons in the bb7 ligand upon addition of Q[10], coupled with the observation of several intermolecular ROEs in ROESY spectra, indicated that α-Me4phen-bb7 bound Q[10] with the bb7 methylene carbons within the cavity and the metal center positioned outside one of the portals. Simple molecular modeling confirmed the feasibility of the binding model. An α-Me4phen-bb7-Q[10] binding constant of 9.9 ± 0.2 × 106 M−1 was determined by luminescence spectroscopy. Q[10]-encapsulation decreased the toxicity of α-Me4phen-bb7 against the three eukaryotic cell lines and increased the binding affinity of the ruthenium complex for HSA. Confocal microscopy experiments indicated that the level of accumulation of α-Me4phen-7 in BHK cells is not significantly affected by Q[10]-encapsulation. Taken together, the combined results suggest that α-Me4phen-7 could be a good candidate as a new antimicrobial agent, and Q[10]-encapsulation could be a method to improve the pharmacokinetics of the ruthenium complex.
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Affiliation(s)
- Biyun Sun
- School of Physical, Environmental and Mathematical Sciences, University of New South Wales, Australian Defence Force Academy, Canberra, ACT, Australia
| | - Ian F Musgrave
- Discipline of Pharmacology, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Anthony I Day
- School of Physical, Environmental and Mathematical Sciences, University of New South Wales, Australian Defence Force Academy, Canberra, ACT, Australia
| | - Kirsten Heimann
- College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia.,College of Science and Engineering, James Cook University, Townsville, QLD, Australia
| | - F Richard Keene
- Department of Chemistry, School of Physical Sciences, University of Adelaide, Adelaide, SA, Australia.,Australian Institute of Tropical Health and Medicine/Centre for Molecular Therapeutics, James Cook University, Townsville, QLD, Australia
| | - J Grant Collins
- School of Physical, Environmental and Mathematical Sciences, University of New South Wales, Australian Defence Force Academy, Canberra, ACT, Australia
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7
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Xiao H, Yan L, Dempsey EM, Song W, Qi R, Li W, Huang Y, Jing X, Zhou D, Ding J, Chen X. Recent progress in polymer-based platinum drug delivery systems. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2018.07.004] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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8
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Cunningham RM, Hickey AM, Wilson JW, Plakos KJI, DeRose VJ. Pt-induced crosslinks promote target enrichment and protection from serum nucleases. J Inorg Biochem 2018; 189:124-133. [PMID: 30245274 DOI: 10.1016/j.jinorgbio.2018.09.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/23/2018] [Accepted: 09/10/2018] [Indexed: 12/31/2022]
Abstract
Identifying the interactions of small molecules with biomolecules in complex cellular environments is a significant challenge. As one important example, despite being widely used for decades, much is still not understood regarding the cellular targets of Pt(II)-based anticancer drugs. In this study we introduce a novel method for isolation of Pt(II)-bound biomolecules using a DNA hybridization pull-down approach. Using a modified Pt reagent, click-ligation of a DNA oligonucleotide to both a Pt(II)-bound DNA hairpin and bovine serum albumin (BSA) are demonstrated. Subsequent hybridization to a biotin-labeled oligonucleotide allows for efficient isolation of Pt(II)-bound species by streptavidin pulldown. We also find that platinated bovine serum albumin readily crosslinks to DNA in the absence of click ligation, and that a fraction of BSA-bound Pt(II) can transfer to DNA over time. Interestingly, in in vitro studies, fragmented mammalian DNA that is crosslinked to BSA through Pt(II) exhibits significantly increased protection from degradation by serum nucleases.
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Affiliation(s)
- Rachael M Cunningham
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR 97403, USA; Institute of Molecular Biology, University of Oregon, Eugene, OR 97403, USA
| | - Anna M Hickey
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR 97403, USA
| | - Jesse W Wilson
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR 97403, USA; Institute of Molecular Biology, University of Oregon, Eugene, OR 97403, USA
| | - Kory J I Plakos
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR 97403, USA; Institute of Molecular Biology, University of Oregon, Eugene, OR 97403, USA
| | - Victoria J DeRose
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR 97403, USA; Institute of Molecular Biology, University of Oregon, Eugene, OR 97403, USA.
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9
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Hassan W, Chitcholtan K, Sykes P, Garrill A. Ascitic fluid from advanced ovarian cancer patients compromises the activity of receptor tyrosine kinase inhibitors in 3D cell clusters of ovarian cancer cells. Cancer Lett 2018; 420:168-181. [PMID: 29432847 DOI: 10.1016/j.canlet.2018.02.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 01/31/2018] [Accepted: 02/06/2018] [Indexed: 12/18/2022]
Abstract
Ovarian cancer patients in the advanced stages of the disease show clinical ascites, which is associated with a poor prognosis. There is limited understanding of the effect of ascitic fluid on ovarian cancer cells and their response to anticancer drugs. We investigated the antitumour effects of EGFR/Her-2 (canertinib) and c-Met (PHA665752) inhibitors in a 3D cell model of three ovarian cancer lines. Single and combined inhibitor treatments affected cell growth of OVCAR-5 and SKOV-3 cell lines but not OV-90 cell line. Growth reduction was correlated with the down expression of PCNA, EGFR, HER-2, c-MET, ERK and AKT and their phosphorylation status in cells in growth factor supplemented media. However, these effects were not re-producible in OVCAR-5 and SKOV-3 cell lines when they were exposed to ascitic fluid obtained from three ovarian cancer patients. Serum albumin and protein components in the ascitic fluids may reduce the cellular uptake of the inhibitors.
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Affiliation(s)
- Wafaa Hassan
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8041, New Zealand.
| | - Kenny Chitcholtan
- Gynaecological Oncology Research Group, Department of Obstetrics and Gynaecology, University of Otago, Christchurch Women's Hospital, 2 Riccarton Avenue, Christchurch, 8011, New Zealand.
| | - Peter Sykes
- Gynaecological Oncology Research Group, Department of Obstetrics and Gynaecology, University of Otago, Christchurch Women's Hospital, 2 Riccarton Avenue, Christchurch, 8011, New Zealand.
| | - Ashley Garrill
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8041, New Zealand.
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10
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Zhang ZC, Wang HB, Zhou Q, Hu B, Wen JH, Zhang JL. Screening of effective xanthine oxidase inhibitors in dietary anthocyanins from purple sweet potato (Ipomoea batatas L. Cultivar Eshu No.8) and deciphering of the underlying mechanisms in vitro. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.06.048] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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11
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Belaya I, Chikhirzhina E, Polyanichko A. Interaction of DDP with bovine serum albumin facilitates formation of the protein dimers. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Pages BJ, Garbutcheon-Singh KB, Aldrich-Wright JR. Platinum Intercalators of DNA as Anticancer Agents. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601204] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Benjamin J. Pages
- Nanoscale Organisation and Dynamics Group; Western Sydney University; 2560 Campbelltown NSW Australia
| | | | - Janice R. Aldrich-Wright
- Nanoscale Organisation and Dynamics Group; Western Sydney University; 2560 Campbelltown NSW Australia
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13
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Biological activity and binding properties of [Ru(II)(dcbpy)2Cl2] complex to bovine serum albumin, phospholipase A2 and glutathione. Biometals 2016; 29:921-33. [PMID: 27515969 DOI: 10.1007/s10534-016-9964-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 07/31/2016] [Indexed: 02/02/2023]
Abstract
Ruthenium compounds are highly regarded as metallo-drug candidates. Many studies have focused their attention on the interaction between ruthenium complexes with their possible biological targets. The interaction of ruthenium complexes with transport proteins, enzymes and peptides is of great importance for understanding their biodistribution and mechanism of action, therefore, the development of an anti-cancer therapy involving ruthenium complexes has recently shifted from DNA targeting towards protein targeting. With the aim of gaining insight into possible interactions between ruthenium complexes with biologically relevant proteins, we have studied the interaction of cis-dichlorobis(2,2'-bipyridyl-4,4'-dicarboxylic acid)ruthenium(II) complex [Ru(II)(dcbpy)2Cl2], which previously showed good potency in photo-dynamic chemotherapy, with bovine serum albumin (BSA), phospholipase A2 (PLA2) and glutathione (GSH). Binding constants and possible number of binding sites to mentioned proteins and peptide are investigated by ultraviolet-visible spectroscopy and Matrix-Assisted Laser Desorption Ionization Mass Spectrometry (MALDI TOF MS). The complex binding affinities were in the following order: PLA2 > BSA > GSH. Moreover, genotoxic profile of the complex, tested on peripheral blood lymphocytes as a model system, was also promising.
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14
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Lin S, Zhang G, Pan J, Gong D. Deciphering the inhibitory mechanism of genistein on xanthine oxidase in vitro. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 153:463-72. [DOI: 10.1016/j.jphotobiol.2015.10.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/19/2015] [Accepted: 10/27/2015] [Indexed: 10/22/2022]
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15
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Macias FJ, Deo KM, Pages BJ, Wormell P, Clegg JK, Zhang Y, Li F, Zheng G, Sakoff J, Gilbert J, Aldrich-Wright JR. Synthesis and Analysis of the Structure, Diffusion and Cytotoxicity of Heterocyclic Platinum(IV) Complexes. Chemistry 2015; 21:16990-7001. [PMID: 26439874 DOI: 10.1002/chem.201502159] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Indexed: 11/10/2022]
Abstract
We have developed six dihydroxidoplatinum(IV) compounds with cytotoxic potential. Each derived from active platinum(II) species, these complexes consist of a heterocyclic ligand (HL) and ancillary ligand (AL) in the form [Pt(HL)(AL)(OH)2](2+), where HL is a methyl-functionalised variant of 1,10-phenanthroline and AL is the S,S or R,R isomer of 1,2-diaminocyclohexane. NMR characterisation and X-ray diffraction studies clearly confirmed the coordination geometry of the octahedral platinum(IV) complexes. The self-stacking of these complexes was determined using pulsed gradient stimulated echo nuclear magnetic resonance. The self-association behaviour of square planar platinum(II) complexes is largely dependent on concentration, whereas platinum(IV) complexes do not aggregate under the same conditions, possibly due to the presence of axial ligands. The cytotoxicity of the most active complex, exhibited in several cell lines, has been retained in the platinum(IV) form.
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Affiliation(s)
- Freddy J Macias
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia)
| | - Krishant M Deo
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia)
| | - Benjamin J Pages
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia)
| | - Paul Wormell
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia)
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane St. Lucia, QLD 4072 (Australia)
| | - Yingjie Zhang
- Australian Nuclear Science and Technology Organisation, Kirrawee DC, NSW 2232 (Australia)
| | - Feng Li
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia)
| | - Gang Zheng
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia)
| | | | - Jayne Gilbert
- Calvary Mater Newcastle, Waratah, NSW 2298 (Australia)
| | - Janice R Aldrich-Wright
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia).
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16
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Pages BJ, Ang DL, Wright EP, Aldrich-Wright JR. Metal complex interactions with DNA. Dalton Trans 2015; 44:3505-26. [DOI: 10.1039/c4dt02700k] [Citation(s) in RCA: 241] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Increasing numbers of DNA structures are being revealed using a diverse range of transition metal complexes and biophysical spectroscopic techniques. Here we present a review of metal complex-DNA interactions in which several binding modes and DNA structural forms are explored.
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Affiliation(s)
- Benjamin J. Pages
- Nanoscale Organisation and Dynamics Group
- School of Science and Health
- University of Western Sydney
- Locked Bag 1797 Penrith South DC
- Australia
| | - Dale L. Ang
- Nanoscale Organisation and Dynamics Group
- School of Science and Health
- University of Western Sydney
- Locked Bag 1797 Penrith South DC
- Australia
| | - Elisé P. Wright
- School of Medicine
- University of Western Sydney
- Locked Bag 1797 Penrith South DC
- Australia
| | - Janice R. Aldrich-Wright
- Nanoscale Organisation and Dynamics Group
- School of Science and Health
- University of Western Sydney
- Locked Bag 1797 Penrith South DC
- Australia
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17
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Huang Y, Zhang Z, Wang K, Cai S, Chen Z. HRJCOSY: A three-dimensional NMR method for measuring complex samples in inhomogeneous magnetic fields. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.06.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Tikhonova TN, Shirshin EA, Budylin GS, Fadeev VV, Petrova GP. Assessment of the Europium(III) Binding Sites on Albumin Using Fluorescence Spectroscopy. J Phys Chem B 2014; 118:6626-33. [DOI: 10.1021/jp501277z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Tatiana N. Tikhonova
- International Laser Center and ‡Department of Physics, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Evgeny A. Shirshin
- International Laser Center and ‡Department of Physics, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Gleb S. Budylin
- International Laser Center and ‡Department of Physics, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Victor V. Fadeev
- International Laser Center and ‡Department of Physics, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Galina P. Petrova
- International Laser Center and ‡Department of Physics, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
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19
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Pages BJ. Pulsed Gradient Spin-Echo NMR Studies of the Interactions of Platinum Complexes. Aust J Chem 2014. [DOI: 10.1071/ch13496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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20
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Li F, Feterl M, Warner JM, Day AI, Keene FR, Collins JG. Protein binding by dinuclear polypyridyl ruthenium(ii) complexes and the effect of cucurbit[10]uril encapsulation. Dalton Trans 2013; 42:8868-77. [DOI: 10.1039/c3dt50551k] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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