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Greif CE, Mertens RT, Berger G, Parkin S, Awuah SG. An anti-glioblastoma gold(i)-NHC complex distorts mitochondrial morphology and bioenergetics to induce tumor growth inhibition. RSC Chem Biol 2023; 4:592-599. [PMID: 37547458 PMCID: PMC10398352 DOI: 10.1039/d3cb00051f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 05/19/2023] [Indexed: 08/08/2023] Open
Abstract
Glioblastoma multiforme (GBM) is the most lethal brain cancer subtype, often advanced by the time of initial diagnosis. Existing treatment modalities including surgery, chemotherapy and radiation have been stymied by recurrence, metastasis, drug resistance and brain targetability. Here, we report a geometrically distinct Au(i) complex ligated by N^N-bidentate ligands and supported by a N-heterocyclic ligand that modulates mitochondrial morphology to inhibit GBM in vitro and in vivo. This work benefits from the facile preparation of anti-GBM Au(i)-NHC complexes.
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Affiliation(s)
- Charles E Greif
- Department of Chemistry, University of Kentucky Lexington Kentucky 40506 USA
| | - R Tyler Mertens
- Department of Chemistry, University of Kentucky Lexington Kentucky 40506 USA
| | - Gilles Berger
- Harvey Cushing Neuro-Oncology Laboratories, Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School Boston MA 02115 USA
- Microbiology, Bioorganic & Macromolecular Chemistry, Faculté de Pharmacie, Université libre de Bruxelles (ULB), Boulevard du Triomphe 1050 Brussels Belgium
| | - Sean Parkin
- Department of Chemistry, University of Kentucky Lexington Kentucky 40506 USA
| | - Samuel G Awuah
- Department of Chemistry, University of Kentucky Lexington Kentucky 40506 USA
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky Lexington Kentucky 40536 USA
- University of Kentucky Markey Cancer Center, University of Kentucky Lexington KY 40536 USA
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Khan HA, Al‐Hoshani A, Isab AA, Alhomida AS. A Gold(III) Complex with Potential Anticancer Properties. ChemistrySelect 2022. [DOI: 10.1002/slct.202202956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Haseeb A. Khan
- FRCPath, FRSC Department of Biochemistry College of Science King Saud University P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Ali Al‐Hoshani
- Department of Pharmaceutical Chemistry College of Pharmacy King Saud University Riyadh 11451 Saudi Arabia
| | - Anvarhusein A. Isab
- Department of Chemistry College of Science King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia
| | - Abdullah S. Alhomida
- FRCPath, FRSC Department of Biochemistry College of Science King Saud University P.O. Box 2455 Riyadh 11451 Saudi Arabia
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Kim JH, Ofori S, Tagmount A, Vulpe CD, Awuah SG. Genome-wide CRISPR Screen Reveal Targets of Chiral Gold(I) Anticancer Compound in Mammalian Cells. ACS OMEGA 2022; 7:39197-39205. [PMID: 36340096 PMCID: PMC9631916 DOI: 10.1021/acsomega.2c05166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/06/2022] [Indexed: 06/09/2023]
Abstract
Metal-based drugs, such as cisplatin and auranofin, are used for the treatment of cancer and rheumatoid arthritis, respectively. Auranofin and other gold-derived compounds have been shown to possess anticancer, anti-inflammatory, antimicrobial, and antiparasitic activity in preclinical and clinical trials. Unlike platinum agents which are known to target DNA, the target of gold is not well elucidated. To better understand the targets and effects of gold agents in mammalian cells, we used a targeted CRISPR (ToxCRISPR) screen in K562 cancer cells to identify genes that modulate cellular sensitivity to gold. We synthesized a novel chiral gold(I) compound, JHK-21, with potent anticancer activity. Among the most sensitizing hits were proteins involved in mitochondrial carriers, mitochondrial metabolism, and oxidative phosphorylation. Further analysis revealed that JHK-21 induced inner mitochondria membrane dysfunction and modulated ATP-binding cassette subfamily member C (ABCC1) function in a manner distinct from auranofin. Characterizing the therapeutic effects and toxicities of metallodrugs in mammalian cells is of growing interest to guide future drug discovery, and cellular and preclinical/clinical studies.
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Affiliation(s)
- Jong Hyun Kim
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Samuel Ofori
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Abderrahmane Tagmount
- Department
of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32611, United States
| | - Chris D. Vulpe
- Department
of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32611, United States
| | - Samuel G. Awuah
- Department
of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
- Department
of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
- Markey
Cancer Center, University of Kentucky, Lexington, Kentucky 40536, United States
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4
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Olelewe C, Kim JH, Ofori S, Mertens RT, Gukathasan S, Awuah SG. Gold(III)-P-chirogenic complex induces mitochondrial dysfunction in triple-negative breast cancer. iScience 2022; 25:104340. [PMID: 35602949 PMCID: PMC9117869 DOI: 10.1016/j.isci.2022.104340] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/14/2022] [Accepted: 04/27/2022] [Indexed: 12/19/2022] Open
Abstract
Chemical agents that specifically exploit metabolic vulnerabilities of cancer cells will be beneficial but are rare. The role of oxidative phosphorylation (OXPHOS) in promoting and maintaining triple-negative breast cancer (TNBC) growth provides new treatment opportunity. In this work, we describe AuPhos-19, a small-molecule gold(III)-based agent bearing a chiral phosphine ligand that selectively disrupts mitochondrial metabolism in murine and human TNBC cells but not normal epithelial cells. AuPhos-19 induces potent cytotoxic effect with half maximal inhibitory concentration (IC50) in the nanomolar range (220-650 nM) across different TNBC cell lines. The lipophilic cationic character of AuPhos-19 facilitates interaction with mitochondrial OXPHOS. AuPhos-19 inhibits mitochondria respiration and induces significant AMPK activation. Depolarization of the mitochondria membrane, mitochondria ROS accumulation, and mitochondria DNA depletion provided further indication that AuPhos-19 perturbs mitochondria function. AuPhos-19 inhibits tumor growth in tumor-bearing mice. This study highlights the development of gold-based compounds targeting mitochondrial pathways for efficacious cancer treatment.
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Affiliation(s)
- Chibuzor Olelewe
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
| | - Jong Hyun Kim
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
| | - Samuel Ofori
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
| | - Randall T. Mertens
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
| | | | - Samuel G. Awuah
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
- Center for Pharmaceutical Research and Innovation, College of Pharmacy and Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
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5
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Gold(I/III)-Phosphine Complexes as Potent Antiproliferative Agents. Sci Rep 2019; 9:12335. [PMID: 31451718 PMCID: PMC6710276 DOI: 10.1038/s41598-019-48584-5] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 08/07/2019] [Indexed: 11/23/2022] Open
Abstract
The reaction of gold reagents [HAuCl4•3H2O], [AuCl(tht)], or cyclometalated gold(III) precursor, [C^NAuCl2] with chiral ((R,R)-(-)-2,3-bis(t-butylmethylphosphino) quinoxaline) and non-chiral phosphine (1,2-Bis(diphenylphosphino)ethane, dppe) ligands lead to distorted Au(I), (1, 2, 4, 5) and novel cyclometalated Au(III) complexes (3, 6). These gold compounds were characterized by multinuclear NMR, microanalysis, mass spectrometry, and X-ray crystallography. The inherent electrochemical properties of the gold complexes were also studied by cyclic voltammetry and theoretical insight of the complexes was gained by density functional theory and TD-DFT calculations. The complexes effectively kill cancer cells with IC50 in the range of ~0.10–2.53 μΜ across K562, H460, and OVCAR8 cell lines. In addition, the retinal pigment epithelial cell line, RPE-Neo was used as a healthy cell line for comparison. Differential cellular uptake in cancer cells was observed for the compounds by measuring the intracellular accumulation of gold using ICP-OES. Furthermore, the compounds trigger early – late stage apoptosis through potential disruption of redox homeostasis. Complexes 1 and 3 induce predominant G1 cell cycle arrest. Results presented in this report suggest that stable gold-phosphine complexes with variable oxidation states hold promise in anticancer drug discovery and need further development.
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Kanthecha DA, Bhatt BS, Patel MN. Synthesis, characterization and biological activities of imidazo[1,2-a]pyridine based gold(III) metal complexes. Heliyon 2019; 5:e01968. [PMID: 31294115 PMCID: PMC6595245 DOI: 10.1016/j.heliyon.2019.e01968] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 05/07/2019] [Accepted: 06/14/2019] [Indexed: 12/16/2022] Open
Abstract
Five imidazo [1,2-a]pyridine derivatives and their Au(III) complexes were synthesized. The compounds were characterized by 1H-NMR, 13C-NMR, IR, mass, UV-visible, elemental analysis, conductivity and magnetic measurement studies. All the compounds were screened for diverse biological activities to check the effect of coordination of Au(III) with imidazo [1,2-a]pyridine heterocycles. The DNA interaction ability of compounds were studied as the change in absorption maxima and position of HS-DNA in presence of compounds and viscosity measurement due to change in DNA length under the influence of compounds. The computational insight of compound-DNA interaction was taken in docking study. All the results suggest intercalation mode of binding. The cellular level cytotoxic nature of compounds was evaluated using trypan blue dye staining of dead cell in cell viability assay. The smearing of DNA was observed, while DNA extracted from S. pombe cells in presence of complexes was subjected to gel electrophoresis, which shows their toxic effect on DNA. The complexes were evaluated for cytotoxicity on human A549 (Lung adenocarcinoma) cell line by MTT assay (IC50 values). The in vitro cytotoxicity in terms of LC50 value was checked on a simple zoological organism, brine shrimp.
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Affiliation(s)
- Darshana A Kanthecha
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, 388 120, Gujarat, India
| | - Bhupesh S Bhatt
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, 388 120, Gujarat, India
| | - Mohan N Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, 388 120, Gujarat, India
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Yeo CI, Ooi KK, Tiekink ERT. Gold-Based Medicine: A Paradigm Shift in Anti-Cancer Therapy? Molecules 2018; 23:molecules23061410. [PMID: 29891764 PMCID: PMC6100309 DOI: 10.3390/molecules23061410] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 05/23/2018] [Accepted: 05/28/2018] [Indexed: 11/16/2022] Open
Abstract
A new era of metal-based drugs started in the 1960s, heralded by the discovery of potent platinum-based complexes, commencing with cisplatin [(H₃N)₂PtCl₂], which are effective anti-cancer chemotherapeutic drugs. While clinical applications of gold-based drugs largely relate to the treatment of rheumatoid arthritis, attention has turned to the investigation of the efficacy of gold(I) and gold(III) compounds for anti-cancer applications. This review article provides an account of the latest research conducted during the last decade or so on the development of gold compounds and their potential activities against several cancers as well as a summary of possible mechanisms of action/biological targets. The promising activities and increasing knowledge of gold-based drug metabolism ensures that continued efforts will be made to develop gold-based anti-cancer agents.
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Affiliation(s)
- Chien Ing Yeo
- Research Centre for Crystalline Materials, School of Science and Technology, Sunway University. No. 5, Jalan Universiti, Bandar Sunway 47500, Malaysia.
| | - Kah Kooi Ooi
- Research Centre for Crystalline Materials, School of Science and Technology, Sunway University. No. 5, Jalan Universiti, Bandar Sunway 47500, Malaysia.
| | - Edward R T Tiekink
- Research Centre for Crystalline Materials, School of Science and Technology, Sunway University. No. 5, Jalan Universiti, Bandar Sunway 47500, Malaysia.
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