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Mandal S, Tarai SK, Patra P, Nandi P, Sing S, Rajak B, Moi SC. Brief Research on the Biophysical Study and Anticancer Behavior of Pt(II) Complexes: Their DNA/BSA Binding, Molecular Docking, and Cytotoxic Property. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13613-13625. [PMID: 36301022 DOI: 10.1021/acs.langmuir.2c02490] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The potent bidentate carrier ligand 2-picolylamine (pic) has been used to synthesize Pt(II) complexes to know their bioactivity and anticancer property as reflected by PASS prediction software. The dichloro Pt(II) complex [Pt(pic)Cl2], Pt-1, and its hydrolyzed diaqua complex [Pt(pic)(OH2)2]2+, Pt-2, were synthesized. The thiol-containing Pt(II) complexes [Pt(pic)(l-cys)]+, Pt-3, and [Pt(pic)(L-ac-l-cy)]+, Pt-4, were synthesized from Pt-2, which was obtained from hydrolysis of Pt-1. Their biomolecular interactions with BSA and DNA were executed by spectroscopic methods, and their cytototoxic property was tested by the MTT assay. In vitro biomolecular interactions of Pt(II) complexes with BSA and DNA were investigated by different spectroscopic and viscosity measurement methods for their pharmacokinetic and pharmacodynamic importance. The conformational change of BSA in the presence of a drug candidate was studied by Förster resonance energy transfer calculation and synchronous and three-dimensional fluorescence spectroscopic studies. A theoretical approach on optimization structures, highest occupied molecular orbital-lowest unoccupied molecular orbital energy, global reactivity parameters, time-dependent density functional theory, and molecular docking with BSA and DNA was executed to strengthen and support the experimental observations. In vitro cytotoxic profiles of the complexes like the anticancer activity and their level of reactive oxygen species production were brought under consideration on A549 cancer cells and the normal human embryonic kidney cell line HEK-293. The cytotoxic property was compared with that of the recognized anticancer drug cisplatin.
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Affiliation(s)
- Saikat Mandal
- Department of Chemistry, National Institute of Technology Durgapur, M. G. Avenue, Durgapur713209, WB, India
| | - Swarup Kumar Tarai
- Department of Chemistry, National Institute of Technology Durgapur, M. G. Avenue, Durgapur713209, WB, India
| | - Priya Patra
- Department of Chemistry, National Institute of Technology Durgapur, M. G. Avenue, Durgapur713209, WB, India
| | - Payel Nandi
- Department of Chemistry, National Institute of Technology Durgapur, M. G. Avenue, Durgapur713209, WB, India
| | - Shukdeb Sing
- Department of Chemistry, Vidyasagar University, Midnapore721102, WB, India
| | - Bijoy Rajak
- Department of Chemistry, National Institute of Technology Durgapur, M. G. Avenue, Durgapur713209, WB, India
| | - Sankar Chandra Moi
- Department of Chemistry, National Institute of Technology Durgapur, M. G. Avenue, Durgapur713209, WB, India
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Satange R, Kao SH, Chien CM, Chou SH, Lin CC, Neidle S, Hou MH. Staggered intercalation of DNA duplexes with base-pair modulation by two distinct drug molecules induces asymmetric backbone twisting and structure polymorphism. Nucleic Acids Res 2022; 50:8867-8881. [PMID: 35871296 PMCID: PMC9410880 DOI: 10.1093/nar/gkac629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/24/2022] [Accepted: 07/22/2022] [Indexed: 12/12/2022] Open
Abstract
The use of multiple drugs simultaneously targeting DNA is a promising strategy in cancer therapy for potentially overcoming single drug resistance. In support of this concept, we report that a combination of actinomycin D (ActD) and echinomycin (Echi), can interact in novel ways with native and mismatched DNA sequences, distinct from the structural effects produced by either drug alone. Changes in the former with GpC and CpG steps separated by a A:G or G:A mismatch or in a native DNA with canonical G:C and C:G base pairs, result in significant asymmetric backbone twists through staggered intercalation and base pair modulations. A wobble or Watson–Crick base pair at the two drug-binding interfaces can result in a single-stranded ‘chair-shaped’ DNA duplex with a straight helical axis. However, a novel sugar-edged hydrogen bonding geometry in the G:A mismatch leads to a ‘curved-shaped’ duplex. Two non-canonical G:C Hoogsteen base pairings produce a sharply kinked duplex in different forms and a four-way junction-like superstructure, respectively. Therefore, single base pair modulations on the two drug-binding interfaces could significantly affect global DNA structure. These structures thus provide a rationale for atypical DNA recognition via multiple DNA intercalators and a structural basis for the drugs’ potential synergetic use.
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Affiliation(s)
- Roshan Satange
- Institute of Genomics and Bioinformatics, National Chung Hsing University , Taichung 402, Taiwan
- Ph.D. Program in Medical Biotechnology, National Chung Hsing University , Taichung 402, Taiwan
| | - Shih-Hao Kao
- Institute of Biotechnology, National Chung Hsing University , Taichung 402, Taiwan
| | - Ching-Ming Chien
- Institute of Genomics and Bioinformatics, National Chung Hsing University , Taichung 402, Taiwan
| | - Shan-Ho Chou
- Institute of Biochemistry, National Chung Hsing University , Taichung 402, Taiwan
| | - Chi-Chien Lin
- Institute of Biomedical Science, National Chung Hsing University , Taichung 402, Taiwan
| | - Stephen Neidle
- The School of Pharmacy, University College London , London WC1N 1AX, United Kingdom
| | - Ming-Hon Hou
- Institute of Genomics and Bioinformatics, National Chung Hsing University , Taichung 402, Taiwan
- Ph.D. Program in Medical Biotechnology, National Chung Hsing University , Taichung 402, Taiwan
- Institute of Biotechnology, National Chung Hsing University , Taichung 402, Taiwan
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Wang ZF, Nai XL, Xu Y, Pan FH, Tang FS, Qin QP, Yang L, Zhang SH. Cell nucleus localization and high anticancer activity of quinoline-benzopyran rhodium(III) metal complexes as therapeutic and fluorescence imaging agents. Dalton Trans 2022; 51:12866-12875. [PMID: 35861361 DOI: 10.1039/d2dt01929a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four novel rhodium(III) complexes, [RhIII(QB1)Cl3(DMSO)] (RhN1), [RhIII(QB2)Cl3(CH3OH)]·CH3OH (RhN2), [RhIII(QB3)Cl3(CH3OH)]·CH3OH (RhS), and [RhIII(QB4)Cl3(DMSO)] (RhQ), bearing quinoline-benzopyran ligands (QB1-QB4) were synthesized and used to develop highly anticancer therapeutic and fluorescence imaging agents. Compared with the QB1-QB4 ligands (IC50 > 89.2 ± 1.7 μM for A549/DDP), RhN1, RhN2, RhS and RhQ exhibit selective cytotoxicity against lung carcinoma cisplatin-resistant A549/DDP (A549CDDP) cancer cells, with IC50 values in the range of 0.08-2.7 μM. The fluorescent imaging agent RhQ with the more extended planar QB4 ligand exhibited high anticancer activity in A549CDDP cells and was found in the cell nucleus fraction, whereas RhS had no fluorescence properties. RhQ and RhS may trigger cell apoptosis by causing DNA damage and initiating the mitochondrial dysfunction pathway. Furthermore, RhQ has a higher antitumor efficacy (ca. 55.3%) than RhS (46.4%) and cisplatin (CDDP, 33.1%), and RhQ demonstrated significantly lower toxicity in vivo than CDDP, making it a promising Rh(III)-based anticancer therapeutic and fluorescence imaging agent.
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Affiliation(s)
- Zhen-Feng Wang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, P R China. .,College of Chemistry, Guangdong University of Petrochemical Technology, Maoming, Guangdong, 525000, P R China
| | - Xiao-Ling Nai
- College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin 537000, PR China
| | - Yue Xu
- College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin 537000, PR China
| | - Feng-Hua Pan
- College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin 537000, PR China
| | - Fu-Shun Tang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, P R China.
| | - Qi-Pin Qin
- College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin 537000, PR China
| | - Lin Yang
- College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin 537000, PR China
| | - Shu-Hua Zhang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, P R China. .,College of Chemistry, Guangdong University of Petrochemical Technology, Maoming, Guangdong, 525000, P R China
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Ma L, Li L, Zhu G. Platinum-containing heterometallic complexes in cancer therapy: advances and perspectives. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00205a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Platinum-based anticancer drugs are among the most widely used antineoplastics in clinical settings. Their therapeutic applications and outcomes are, however, greatly hampered by drug resistance, systemic toxicity, and the lack...
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Andrezálová L, Országhová Z. Covalent and noncovalent interactions of coordination compounds with DNA: An overview. J Inorg Biochem 2021; 225:111624. [PMID: 34653826 DOI: 10.1016/j.jinorgbio.2021.111624] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/30/2021] [Accepted: 09/28/2021] [Indexed: 12/26/2022]
Abstract
Deoxyribonucleic acid plays a central role in crucial cellular processes, and many drugs exert their effects through binding to DNA. Since the discovery of cisplatin and its derivatives considerable attention of researchers has been focused on the development of novel anticancer metal-based drugs. Transition metal complexes, due to their great diversity in size and structure, have a big potential to modify DNA through diverse types of interactions, making them the prominent class of compounds for DNA targeted therapy. In this review we describe various binding modes of metal complexes to duplex DNA based on covalent and noncovalent interactions or combination of both. Specific examples of each binding mode as well as possible cytotoxic effects of metal complexes in tumor cells are presented.
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Affiliation(s)
- Lucia Andrezálová
- Institute of Medical Chemistry, Biochemistry and Clinical Biochemistry, Faculty of Medicine, Comenius University, Sasinkova 2, 813 72 Bratislava, Slovakia; Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia.
| | - Zuzana Országhová
- Institute of Medical Chemistry, Biochemistry and Clinical Biochemistry, Faculty of Medicine, Comenius University, Sasinkova 2, 813 72 Bratislava, Slovakia
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Dayanidhi PD, Vaidyanathan VG. Structural insights into the recognition of DNA defects by small molecules. Dalton Trans 2021; 50:5691-5712. [PMID: 33949406 DOI: 10.1039/d0dt04289g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Studies on the binding interaction of small molecules and nucleic acids have been explored for their biological applications. With excellent photophysical/chemical properties, numerous metal complexes have been studied as structural probes for nucleic acids. The recognition of DNA defects is of high importance due to their association with various types of cancers. Small molecules that target DNA defects in a specific and selective manner offer a new avenue for developing novel drugs and diagnostic tools. Transition metal complexes have been studied as probes for abasic sites and DNA/RNA mismatches. By changing the ligand structure or metal center, the probing efficiency of the metal complexes varies towards the defects. In this perspective, we have discussed mainly the structural requirement of metal complexes as probes for abasic sites, mismatches, and covalent DNA adducts, followed by the challenges and future directions.
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Affiliation(s)
- P David Dayanidhi
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India. and Advanced Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai 600 020, India
| | - V G Vaidyanathan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India. and Advanced Materials Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai 600 020, India
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Li C, Zhao X, Liu W, Yin F, Hu J, Zhang G, Chen G. DNA Structural Distortions Induced by a Monofunctional Trinuclear Platinum Complex with Various Cross-Links Using Molecular Dynamics Simulation. J Chem Inf Model 2020; 60:1700-1708. [PMID: 32096984 DOI: 10.1021/acs.jcim.0c00002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The monofunctional trinuclear platinum complex (MTPC), as a promising antitumor agent, can form MTPC-DNA adducts via bifunctional and trifunctional cross-links. Molecular dynamics simulations were used to investigate DNA structural distortions of the MTPC-DNA adducts. MTPC coordinating to DNA results in the decrease of base-pair thermal stability and DNA structural distortions. It is found that there are more significant DNA structural distortions in the trifunctional cross-link than in the bifunctional cross-link, in the 1,4-GG than in the 1,3-GG cross-link, and in the intrastrand than in the interstrand cross-link with the same spans. The results provide a better understanding of DNA structural distortions induced by MTPC with various cross-links at the nucleotide level and are helpful for exploring novel Pt-based anticancer drugs.
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Affiliation(s)
- Chaoqun Li
- Hebei Key Laboratory of Heterocyclic Compounds, College of Chemistry, Chemical Engineering and Materials, Handan University, Handan, 056005 Hebei province, China
| | - Xiaojia Zhao
- Hebei Key Laboratory of Heterocyclic Compounds, College of Chemistry, Chemical Engineering and Materials, Handan University, Handan, 056005 Hebei province, China
| | - Wei Liu
- College of Chemistry, Beijing Normal University, 19# Xinjiekouwai Street, Beijing 100875, China
| | - Fangqian Yin
- Hebei Key Laboratory of Heterocyclic Compounds, College of Chemistry, Chemical Engineering and Materials, Handan University, Handan, 056005 Hebei province, China
| | - Junping Hu
- Hebei Key Laboratory of Heterocyclic Compounds, College of Chemistry, Chemical Engineering and Materials, Handan University, Handan, 056005 Hebei province, China
| | - Guangjie Zhang
- Hebei Key Laboratory of Heterocyclic Compounds, College of Chemistry, Chemical Engineering and Materials, Handan University, Handan, 056005 Hebei province, China
| | - Guangju Chen
- College of Chemistry, Beijing Normal University, 19# Xinjiekouwai Street, Beijing 100875, China
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Dayanidhi DPE, Malapati RP, Vaidyanathan Ganesan V. Selective recognition of DNA defects by cyclometalated Ir(iii) complexes. Dalton Trans 2019; 48:13536-13540. [DOI: 10.1039/c9dt01225g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Three different cyclometalated Ir(iii) complexes selectively bind to DNA defects.
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Affiliation(s)
- David Paul Elisa Dayanidhi
- Academy of Scientific and Innovative Research (AcSIR), Advanced Materials Laboratory
- CSIR-Central Leather Research Institute
- Chennai 600 020
| | - Rozaria Pinky Malapati
- Academy of Scientific and Innovative Research (AcSIR), Advanced Materials Laboratory
- CSIR-Central Leather Research Institute
- Chennai 600 020
| | - Vaidyanathan Vaidyanathan Ganesan
- Academy of Scientific and Innovative Research (AcSIR), Advanced Materials Laboratory
- CSIR-Central Leather Research Institute
- Chennai 600 020
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9
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Raza MK, Gautam S, Howlader P, Bhattacharyya A, Kondaiah P, Chakravarty AR. Pyriplatin-Boron-Dipyrromethene Conjugates for Imaging and Mitochondria-Targeted Photodynamic Therapy. Inorg Chem 2018; 57:14374-14385. [PMID: 30376306 DOI: 10.1021/acs.inorgchem.8b02546] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Monofunctional pyriplatin analogues cis-[Pt(NH3)2(L)Cl](NO3) (1-3) having boron-dipyrromethene (BODIPY) pendants (L) with 1,3,5,7-tetramethyl-8-(4-pyridyl)-4,4'-difluoroboradiazaindacene moieties were designed and synthesized, and their photocytotoxic properties were studied. The Pt-BODIPY conjugates displayed an absorption band within 505-550 nm and a green emissive band near 535 nm in 1% DMSO/DMEM (Dulbecco's modified Eagle's medium) buffer. Complex cis-[Pt(NH3)2(4-Me-py)Cl](NO3) (4) was used as a control for determining the structural aspects by X-ray crystallography. The mono- and diiodinated BODIPY complexes 2 and 3 showed generation of singlet oxygen on light activation as evidenced from the 1,3-diphenylisobenzofuran (DPBF) titration experiments. The cytotoxicity of the BODIPY complexes was tested against A549 (human lung cancer), MCF-7 (human breast cancer), and HaCaT (human skin keratinocyte) cells in dark and visible light (400-700 nm, 10 J cm-2). While complexes 2 and 3 showed excellent photocytotoxicity (IC50 ≈ 0.05 μM), they remained essentially nontoxic in the dark (IC50 > 100 μM). The emissive bands of 1 and 2 were used for cellular imaging by confocal microscopy study, which showed their mitochondrial localization. This was further supported by platinum estimation from isolated mitochondria and mitochondrial depolarization through a JC-1 assay. The photomediated apoptotic cell death was evidenced from flow cytometric assays, annexin-V/FITC-PI (fluorescein isothiocyanate-propidium iodide) and cell cycle arrest in sub-G1 and G2/M phases. The complexes bind to 9-ethylguanine as a model nucleobase to form monoadducts. A mechanistic study on DNA photocleavage activity using pUC19 DNA showed singlet oxygen as the reactive oxygen species (ROS). The combination of photodynamic therapy with DNA cross-linking property enhanced the anticancer potential of the monofunctional BODIPY-conjugates of pyriplatins.
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10
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Synthesis and antibacterial studies of rhodium and iridium complexes comprising of dipyridyl hydrazones. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.03.058] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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11
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Boyle KM, Barton JK. A Family of Rhodium Complexes with Selective Toxicity toward Mismatch Repair-Deficient Cancers. J Am Chem Soc 2018; 140:5612-5624. [PMID: 29620877 DOI: 10.1021/jacs.8b02271] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Rhodium metalloinsertors are a unique set of metal complexes that bind specifically to DNA base pair mismatches in vitro and kill mismatch repair (MMR)-deficient cells at lower concentrations than their MMR-proficient counterparts. A family of metalloinsertors containing rhodium-oxygen ligand coordination, termed "Rh-O" metalloinsertors, has been prepared and shown to have a significant increase in both overall potency and selectivity toward MMR-deficient cells regardless of structural changes in the ancillary ligands. Here we describe DNA-binding and cellular studies with the second generation of Rh-O metalloinsertors in which an ancillary ligand is varied in both steric bulk and lipophilicity. These complexes, of the form [Rh(L)(chrysi)(PPO)]2+, all include the O-containing PPO ligand (PPO = 2-(pyridine-2-yl)propan-2-ol) and the aromatic inserting ligand chrysi (5,6-chrysene quinone diimine) but differ in the identity of their ancillary ligand L, where L is a phenanthroline or bipyridyl derivative. The Rh-O metalloinsertors in this family all show micromolar binding affinities for a 29-mer DNA hairpin containing a single CC mismatch. The complexes display comparable lipophilic tendencies and p Ka values of 8.1-9.1 for dissociation of an imine proton on the chrysi ligand. In cellular proliferation and cytotoxicity assays with MMR-deficient cells (HCT116O) and MMR-proficient cells (HCT116N), the complexes containing the phenanthroline-derived ligands show highly selective cytotoxic preference for the MMR-deficient cells at nanomolar concentrations. Using mass spectral analyses, it is shown that the complexes are taken into cells through a passive mechanism and exhibit low accumulation in mitochondria, an off-target organelle that, when targeted by parent metalloinsertors, can lead to nonselective cytotoxicity. Overall, these Rh-O metalloinsertors have distinct and improved behavior compared to previous generations of parent metalloinsertors, making them ideal candidates for further therapeutic assessment.
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Affiliation(s)
- Kelsey M Boyle
- Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Jacqueline K Barton
- Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
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Mitra I, Mukherjee S, Reddy B. VP, Chatterjee SK, Mukherjee S, Ghosh S, Chatterji U, Moi SC. DNA/protein interactions, cell cycle arrest and apoptosis study of potent cytotoxic Pt(II) complexes with reduced side-effects. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.10.100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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13
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Brabec V, Hrabina O, Kasparkova J. Cytotoxic platinum coordination compounds. DNA binding agents. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.04.013] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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14
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Bailis JM, Weidmann AG, Mariano NF, Barton JK. Rhodium metalloinsertor binding generates a lesion with selective cytotoxicity for mismatch repair-deficient cells. Proc Natl Acad Sci U S A 2017; 114:6948-6953. [PMID: 28634291 PMCID: PMC5502648 DOI: 10.1073/pnas.1706665114] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The DNA mismatch repair (MMR) pathway recognizes and repairs errors in base pairing and acts to maintain genome stability. Cancers that have lost MMR function are common and comprise an important clinical subtype that is resistant to many standard of care chemotherapeutics such as cisplatin. We have identified a family of rhodium metalloinsertors that bind DNA mismatches with high specificity and are preferentially cytotoxic to MMR-deficient cells. Here, we characterize the cellular mechanism of action of the most potent and selective complex in this family, [Rh(chrysi)(phen)(PPO)]2+ (Rh-PPO). We find that Rh-PPO binding induces a lesion that triggers the DNA damage response (DDR). DDR activation results in cell-cycle blockade and inhibition of DNA replication and transcription. Significantly, the lesion induced by Rh-PPO is not repaired in MMR-deficient cells, resulting in selective cytotoxicity. The Rh-PPO mechanism is reminiscent of DNA repair enzymes that displace mismatched bases, and is differentiated from other DNA-targeted chemotherapeutics such as cisplatin by its potency, cellular mechanism, and selectivity for MMR-deficient cells.
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Affiliation(s)
- Julie M Bailis
- Department of Oncology Research, Amgen, Inc., South San Francisco, CA 94080;
| | - Alyson G Weidmann
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125
| | - Natalie F Mariano
- Department of Oncology Research, Amgen, Inc., South San Francisco, CA 94080
| | - Jacqueline K Barton
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125
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15
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Shokohi-Pour Z, Chiniforoshan H, Sabzalian MR, Esmaeili SA, Momtazi-Borojeni AA. Cobalt (II) complex with novel unsymmetrical tetradentate Schiff base (ON) ligand: in vitro cytotoxicity studies of complex, interaction with DNA/protein, molecular docking studies, and antibacterial activity. J Biomol Struct Dyn 2017; 36:532-549. [PMID: 28271957 DOI: 10.1080/07391102.2017.1287006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
[C20H17N3O2] and cobalt (II) complex [Co(L2)(MeOH)2].ClO4, (L2 = 4-((E)-1-((2-(((E)-pyridin-2-ylmethylene) amino) phenyl) imino) ethyl) benzene-1, 3-diol) novel Schiff base has been synthesiszed and chracterized by Fourier transform infrared, UV-vis, 1H-NMR spectroscopy, and elemental analysis techniques. The interaction of Co(II) complex with DNA and BSA was investigated by electronic absorption spectroscopy, fluorescence spectroscopy, circular dichroism, and thermal denaturation studies. Our experiments indicate that this complex could strongly bind to CT-DNA via minor groove mechanism. In addition, fluorescence spectrometry of BSA with the complex showed that the fluorescence quenching mechanism of BSA was of static type. The complex exhibited significant in vitro cytotoxicity against three human cancer cell lines (JURKAT, SKOV3, and U87). The molecular docking experiment effectively proved the binding of complex to DNA and BSA. Finally, antibacterial assay over gram-positive and gram-negative pathogenic bacterial strains was studied.
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Affiliation(s)
- Zahra Shokohi-Pour
- a Department of Chemistry , Isfahan University of Technology , Isfahan 84156-83111 , Iran
| | - Hossein Chiniforoshan
- a Department of Chemistry , Isfahan University of Technology , Isfahan 84156-83111 , Iran
| | - Mohammad R Sabzalian
- b Department of Agronomy and Plant Breeding , College of Agriculture, Isfahan University of Technology , Isfahan 84156-83111 , Iran
| | - Seyed-Alireza Esmaeili
- c Student Research Committee, Department of Immunology and Allergy , Immunology Research Center, School of Medicine, Mashhad University of Medical Sciences , Mashhad , Iran
| | - Amir Abbas Momtazi-Borojeni
- d Student Research Committee, Department of Medical Biotechnology , Nanotechnology Research Center, School of Medicine, Mashhad University of Medical Sciences , Mashhad , Iran
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16
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Štarha P, Vančo J, Trávníček Z. Platinum complexes containing adenine-based ligands: An overview of selected structural features. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.09.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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17
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Johnstone TC, Suntharalingam K, Lippard SJ. The Next Generation of Platinum Drugs: Targeted Pt(II) Agents, Nanoparticle Delivery, and Pt(IV) Prodrugs. Chem Rev 2016; 116:3436-86. [PMID: 26865551 PMCID: PMC4792284 DOI: 10.1021/acs.chemrev.5b00597] [Citation(s) in RCA: 1660] [Impact Index Per Article: 207.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The platinum drugs, cisplatin, carboplatin, and oxaliplatin, prevail in the treatment of cancer, but new platinum agents have been very slow to enter the clinic. Recently, however, there has been a surge of activity, based on a great deal of mechanistic information, aimed at developing nonclassical platinum complexes that operate via mechanisms of action distinct from those of the approved drugs. The use of nanodelivery devices has also grown, and many different strategies have been explored to incorporate platinum warheads into nanomedicine constructs. In this Review, we discuss these efforts to create the next generation of platinum anticancer drugs. The introduction provides the reader with a brief overview of the use, development, and mechanism of action of the approved platinum drugs to provide the context in which more recent research has flourished. We then describe approaches that explore nonclassical platinum(II) complexes with trans geometry or with a monofunctional coordination mode, polynuclear platinum(II) compounds, platinum(IV) prodrugs, dual-threat agents, and photoactivatable platinum(IV) complexes. Nanoparticles designed to deliver platinum(IV) complexes will also be discussed, including carbon nanotubes, carbon nanoparticles, gold nanoparticles, quantum dots, upconversion nanoparticles, and polymeric micelles. Additional nanoformulations, including supramolecular self-assembled structures, proteins, peptides, metal-organic frameworks, and coordination polymers, will then be described. Finally, the significant clinical progress made by nanoparticle formulations of platinum(II) agents will be reviewed. We anticipate that such a synthesis of disparate research efforts will not only help to generate new drug development ideas and strategies, but also will reflect our optimism that the next generation of approved platinum cancer drugs is about to arrive.
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Affiliation(s)
- Timothy C Johnstone
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | | | - Stephen J Lippard
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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Abstract
DNA has been exploited as a biological target of chemotherapeutics since the 1940s. Traditional chemotherapeutics, such as cisplatin and DNA-alkylating agents, rely primarily on increased uptake by rapidly proliferating cancer cells for therapeutic effects, but this strategy can result in off-target toxicity in healthy tissue. Recently, research interests have shifted towards targeted chemotherapeutics, in which a drug targets a specific biological signature of cancer, resulting in selective toxicity towards cancerous cells. Here, we review a family of complexes, termed rhodium metalloinsertors, that selectively target DNA base pair mismatches, a hallmark of mismatch-repair (MMR) deficient cancers. These rhodium metalloinsertors, bind DNA mismatches with high specificity and display high selectively in killing MMR-deficient versus MMR-proficient cells. This cell selectivity is unique for small molecules that bind DNA. Current generations of rhodium metalloinsertors have shown nanomolar potency along with high selectivity towards MMR-deficient cells, and show promise as a foundation for a new family of chemotherapeutics for MMR-deficient cancers.
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Affiliation(s)
- Kelsey M Boyle
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena CA 91125
| | - Jacqueline K Barton
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena CA 91125
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