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Bera A, Gautam S, Sahoo S, Pal AK, Kondaiah P, Chakravarty AR. Red light active Pt(iv)-BODIPY prodrug as a mitochondria and endoplasmic reticulum targeted chemo-PDT agent. RSC Med Chem 2022; 13:1526-1539. [PMID: 36561074 PMCID: PMC9749958 DOI: 10.1039/d2md00225f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 08/22/2022] [Indexed: 12/25/2022] Open
Abstract
A cisplatin-based platinum(iv) prodrug, [Pt(NH3)2Cl2(OH)(L 1 )], having L 1 as a red-light active boron-dipyrromethene (BODIPY) pendant, was synthesized and characterized and its application as a chemo-cum-photodynamic therapy agent was studied. Me-L 1 as the ligand precursor is structurally characterized. The complex displayed an intense absorption band near 650 nm (ε ∼ 8.8 × 104 dm3 mol-1 cm-1) in 1 : 1 (v/v) DMSO/DPBS. It showed an emission band at 674 nm (λ ex = 630 nm) with a fluorescence quantum yield (Φ F) value of 0.37. In red light (600-720 nm), it generated singlet oxygen as evidenced from the 1,3-diphenylisobenzofuran (DPBF) titration experiment giving a singlet oxygen quantum yield (Φ Δ) value of 0.28 in DMSO. The mechanistic pUC19 DNA photocleavage study and singlet oxygen sensor green (SOSG) assay ascertained its ability to generate singlet oxygen in both extracellular and intracellular media by a type-II photo-process. The complex exhibited high stability in the dark, but on red-light irradiation, it displayed rapid activation in the presence of a reducing environment. It displayed remarkable apoptotic photocytotoxicity with half-maximal inhibitory concentration (IC50) ranging from 0.58 to 0.76 μM in human cervical cancer (HeLa) and breast cancer (MCF-7) cells with a respective photo-cytotoxicity index value of >172 and >131. The photodynamic activity was significantly less in non-cancerous human peripheral lung epithelial (HPL1D) cells. The emissive complex showed localization in the mitochondria and endoplasmic reticulum (ER) with a similar Pearson's correlation coefficient value, making it a dual organelle-targeted therapeutic agent. JC-1, fluo-4-AM and annexin V-FITC/propidium iodide assays in HeLa cells showed cellular apoptosis by arresting cells in the sub-G1 phase via mitochondrial dysfunction and ER stress.
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Affiliation(s)
- Arpan Bera
- Department of Inorganic and Physical Chemistry, Indian Institute of Science Bangalore 560012 India +91 80 22932533
| | - Srishti Gautam
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science Bangalore 560012 India +91 80 22932688
| | - Somarupa Sahoo
- Department of Inorganic and Physical Chemistry, Indian Institute of Science Bangalore 560012 India +91 80 22932533
| | - Apurba Kumar Pal
- Department of Inorganic and Physical Chemistry, Indian Institute of Science Bangalore 560012 India +91 80 22932533
| | - Paturu Kondaiah
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science Bangalore 560012 India +91 80 22932688
| | - Akhil R Chakravarty
- Department of Inorganic and Physical Chemistry, Indian Institute of Science Bangalore 560012 India +91 80 22932533
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2
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A review on the chemistry of novel platinum chelates based on azo-azomethine ligands. REV INORG CHEM 2022. [DOI: 10.1515/revic-2022-0027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Numerous platinum group metals (PGMs) complexes contain azo-azomethine-based ligands. Azo-azomethine ligands are N-donor ligands that have extended conjugated π-bonded systems and both azo (–N=N–) and aldimine (–C=N–) functions in their structure. Plenty of platinum (Pt) complexes with azo-imine ligands have been prepared and characterized. Various multidentate azo-imine ligands coordinated with different platinum metal substrates afforded structurally diverse platinum chelates. Nonetheless, many azo-imine-based platinum complexes demonstrated a wide range of biological activities, photo-switchable properties, and redox activities. The review encompasses a general overview of platinum complexes with versatile azo-azomethine ligands, their synthetic protocol, spectroscopic and structural features, chemical reactivity, and multipurpose applications in different areas.
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3
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Low-Intensity Light-Responsive Anticancer Activity of Platinum(II) Complex Nanocolloids on 2D and 3D In Vitro Cancer Cell Model. Bioinorg Chem Appl 2022; 2022:9571217. [PMID: 35502219 PMCID: PMC9056248 DOI: 10.1155/2022/9571217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 03/14/2022] [Accepted: 03/25/2022] [Indexed: 11/17/2022] Open
Abstract
This study aimed to evaluate the therapeutic efficacy of low-intensity visible light responsive nanocolloids of a Pt-based drug using a 2D and three-dimensional (3D) in vitro cancer cell model. Biocompatible and biodegradable polymeric nanocolloids, obtained using the ultrasonication method coupled with Layer by Layer technology, were characterized in terms of size (100 ± 20 nm), physical stability, drug loading (78%), and photoactivation through spectroscopy studies. The in vitro biological effects were assessed in terms of efficacy, apoptosis induction, and DNA-Pt adducts formation. Biological experiments were performed both in dark and under visible light irradiation conditions, exploiting the complex photochemical properties. The light-stimuli responsive nanoformulation gave a significant enhancement in drug bioactivity. This allowed us to achieve satisfying results by using nanomolar drug concentration (50 nM), which was ineffective in darkness condition. Furthermore, our nanocolloids were validated in 3D in vitro spheroids using confocal microscopy and cytofluorimetric assay to compare their behavior on culture in 2D monolayers. The obtained results confirmed that these nanocolloids are promising tools for delivering Pt-based drugs.
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4
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Farley SJ, Salassa L, Pizarro AM, Sadler PJ. Photoactive Platinum(II) Azopyridine Complexes †. Photochem Photobiol 2021; 98:92-101. [PMID: 33616206 DOI: 10.1111/php.13405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/14/2021] [Accepted: 02/18/2021] [Indexed: 11/30/2022]
Abstract
Platinum(II) complexes containing the strong π-acceptor N,N-chelating ligand phenylazopyridine (Ph-azpy) [Pt(p-R-Ph-azpy)X2 ], R = H, NMe2 or OH, X = Cl or N3 , have been synthesized and characterized to explore the effects of monodentate ligands and phenyl substituents on their absorption spectra and photoactivation. Time-dependent density functional theory calculations showed that the complexes have a low-lying unoccupied orbital with strong σ-antibonding character toward the majority of the coordination bonds. The UV-visible absorption bands were assigned as mainly ligand-centered or metal-to-ligand charge-transfer transitions, with strong contributions from the chlorido and azido groups. In complexes with substituted Ph-azpy ligands, σ-donation from NMe2 and OH/O- groups results in a redshift of the main absorption bands compared with unsubstituted Ph-azpy complexes. The diazido complexes are photoactive in solution upon irradiation with either UVA or visible light for R = H or NMe2 , or UVA only when R = OH/O- . Intriguingly, the phenolate group of the latter complex undergoes very slow protonation in solution. Biological screening was limited by poor solubility; however, initial tests showed that the phenolato diazido complex is rapidly taken up into the nuclei of HaCaT keratinocytes, which are stained intensely blue, and its cytotoxicity is increased upon irradiation with UVA light.
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Affiliation(s)
- Sarah J Farley
- Department of Chemistry, University of Warwick, Coventry, UK
| | - Luca Salassa
- Department of Chemistry, University of Warwick, Coventry, UK.,Donostia International Physics Center, Donostia, Spain.,Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia, Kimika Fakultatea, Euskal Herriko Unibertsitatea UPV/EHU, Donostia, Spain.,Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Ana M Pizarro
- Department of Chemistry, University of Warwick, Coventry, UK.,IMDEA Nanociencia, Madrid, Spain
| | - Peter J Sadler
- Department of Chemistry, University of Warwick, Coventry, UK
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5
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De Castro F, Vergaro V, Benedetti M, Baldassarre F, Del Coco L, Dell'Anna MM, Mastrorilli P, Fanizzi FP, Ciccarella G. Visible Light-Activated Water-Soluble Platicur Nanocolloids: Photocytotoxicity and Metabolomics Studies in Cancer Cells. ACS APPLIED BIO MATERIALS 2020; 3:6836-6851. [PMID: 35019346 DOI: 10.1021/acsabm.0c00766] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nanoparticle-based drug delivery systems for cancer therapy offer a great promising opportunity as they specifically target cancer cells, also increasing the bioavailability of anticancer drugs characterized by low water solubility. Platicur, [Pt(cur) (NH3)2](NO3), is a cis-diamine-platinum(II) complex linked to curcumin. In this work, an ultrasonication method, coupled with layer by layer technology, allows us to obtain highly aqueous stable Platicur nanocolloids of about 100 nm. The visible light-activated Platicur nanocolloids showed an increased drug release and antitumor activity on HeLa cells, with respect to Platicur nanocolloids in darkness. This occurrence could give very interesting insight into selective activation of the nanodelivered Pt(II) complex and possible side-effect lowering. For the first time, the metabolic effects of Platicur nanocolloid photoactivation, in the HeLa cell line, have been investigated using an NMR-based metabolomics approach coupled with statistical multivariate data analysis. The reported results highlight specific metabolic differences between photoactivated and non-photoactivated Platicur NC-treated HeLa cancer cells.
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Affiliation(s)
- Federica De Castro
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, via Monteroni, 73100 Lecce, Italy
| | - Viviana Vergaro
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, via Monteroni, 73100 Lecce, Italy.,Institute of Nanotechnology, CNR NANOTEC, Consiglio Nazionale delle Ricerche, via Monteroni, 73100 Lecce, Italy
| | - Michele Benedetti
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, via Monteroni, 73100 Lecce, Italy
| | - Francesca Baldassarre
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, via Monteroni, 73100 Lecce, Italy.,Institute of Nanotechnology, CNR NANOTEC, Consiglio Nazionale delle Ricerche, via Monteroni, 73100 Lecce, Italy
| | - Laura Del Coco
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, via Monteroni, 73100 Lecce, Italy
| | | | | | - Francesco Paolo Fanizzi
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, via Monteroni, 73100 Lecce, Italy
| | - Giuseppe Ciccarella
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, via Monteroni, 73100 Lecce, Italy.,Institute of Nanotechnology, CNR NANOTEC, Consiglio Nazionale delle Ricerche, via Monteroni, 73100 Lecce, Italy
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6
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Ionescu A, Caligiuri R, Godbert N, Ricciardi L, La Deda M, Ghedini M, Ferri N, Lupo MG, Facchetti G, Rimoldi I, Aiello I. Cytotoxic performances of new anionic cyclometalated Pt(II) complexes bearing chelated O^O ligands. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5455] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Andreea Ionescu
- MAT‐InLAB, LASCAMM CR‐INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie ChimicheUniversità della Calabria Ponte Pietro Bucci Cubo 14C 87036 Arcavacata di Rende (CS) Italy
- CNR NANOTEC‐Istituto di Nanotecnologia UOS Cosenza 87036 Arcavacata di Rende (CS) Italy
| | - Rossella Caligiuri
- MAT‐InLAB, LASCAMM CR‐INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie ChimicheUniversità della Calabria Ponte Pietro Bucci Cubo 14C 87036 Arcavacata di Rende (CS) Italy
| | - Nicolas Godbert
- MAT‐InLAB, LASCAMM CR‐INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie ChimicheUniversità della Calabria Ponte Pietro Bucci Cubo 14C 87036 Arcavacata di Rende (CS) Italy
- CNR NANOTEC‐Istituto di Nanotecnologia UOS Cosenza 87036 Arcavacata di Rende (CS) Italy
| | - Loredana Ricciardi
- CNR NANOTEC‐Istituto di Nanotecnologia UOS Cosenza 87036 Arcavacata di Rende (CS) Italy
| | - Massimo La Deda
- MAT‐InLAB, LASCAMM CR‐INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie ChimicheUniversità della Calabria Ponte Pietro Bucci Cubo 14C 87036 Arcavacata di Rende (CS) Italy
- CNR NANOTEC‐Istituto di Nanotecnologia UOS Cosenza 87036 Arcavacata di Rende (CS) Italy
| | - Mauro Ghedini
- MAT‐InLAB, LASCAMM CR‐INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie ChimicheUniversità della Calabria Ponte Pietro Bucci Cubo 14C 87036 Arcavacata di Rende (CS) Italy
- CNR NANOTEC‐Istituto di Nanotecnologia UOS Cosenza 87036 Arcavacata di Rende (CS) Italy
| | - Nicola Ferri
- Dipartimento di Scienze del FarmacoUniversità degli Studi di Padova Via Marzolo 5 35131 Padua Italy
| | - Maria Giovanna Lupo
- Dipartimento di Scienze del FarmacoUniversità degli Studi di Padova Via Marzolo 5 35131 Padua Italy
| | - Giorgio Facchetti
- Dipartimento di Scienze FarmaceuticheUniversità degli Studi di Milano Via Venezian 21 20133 Milan Italy
| | - Isabella Rimoldi
- Dipartimento di Scienze FarmaceuticheUniversità degli Studi di Milano Via Venezian 21 20133 Milan Italy
| | - Iolinda Aiello
- MAT‐InLAB, LASCAMM CR‐INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie ChimicheUniversità della Calabria Ponte Pietro Bucci Cubo 14C 87036 Arcavacata di Rende (CS) Italy
- CNR NANOTEC‐Istituto di Nanotecnologia UOS Cosenza 87036 Arcavacata di Rende (CS) Italy
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7
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Dabbish E, Mazzone G, Russo N, Sicilia E. Mechanism of action of the curcumin cis-diammineplatinum(ii) complex as a photocytotoxic agent. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00503g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
This work provides a deep understanding of the photoprocesses involved in the activation of the curcumin cis-diammineplatinum(ii) complex.
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Affiliation(s)
- Eslam Dabbish
- Department of Chemistry and Chemical Technologies
- Università della Calabria
- Arcavacata di Rende
- Italy
| | - Gloria Mazzone
- Department of Chemistry and Chemical Technologies
- Università della Calabria
- Arcavacata di Rende
- Italy
| | - Nino Russo
- Department of Chemistry and Chemical Technologies
- Università della Calabria
- Arcavacata di Rende
- Italy
| | - Emilia Sicilia
- Department of Chemistry and Chemical Technologies
- Università della Calabria
- Arcavacata di Rende
- Italy
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8
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Guo Y, He Y, Wu S, Zhang S, Song D, Zhu Z, Guo Z, Wang X. Enhancing Cytotoxicity of a Monofunctional Platinum Complex via a Dual-DNA-Damage Approach. Inorg Chem 2019; 58:13150-13160. [PMID: 31539237 DOI: 10.1021/acs.inorgchem.9b02033] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Mitochondrial DNA (mtDNA) is an attractive cellular target for anticancer agents in addition to nuclear DNA (nDNA). The cationic platinum(II) complex cis-[Pt(NP)(NH3)2Cl]NO3 (PtNP, NP = N-(2-ethylpyridine)-1,8-naphthalimide) bearing the DNA-intercalating moiety NP was designed. The structure of PtNP was fully characterized by single-crystal X-ray crystallography, NMR, and HRMS. PtNP is superior to cisplatin in both in vitro and in vivo anticancer activities with low systemic toxicity. The interaction of PtNP with CT-DNA demonstrated that PtNP could effectively bind to DNA through both covalent and noncovalent double binding modes. In addition to causing significant damage to nDNA and remarkable inhibition to DNA damage repair, PtNP also distributed in mitochondria, inducing mtDNA damage and affecting the downstream transcriptional level of mitochondrion-encoded genes. In addition, PtNP disturbed the physiological processes of mitochondria by reducing the mitochondrial membrane potential and promoting the generation of reactive oxygen species. Mechanistic studies demonstrate that PtNP induced apoptosis via mitochondrial pathways by upregulating Bax and Puma and downregulating Bcl-2 proteins, leading to the release of cytochrome c and activation of caspase-3 and caspase-9. As a dual-DNA-damage agent, PtNP is able to improve the anticancer activity by damaging both nuclear and mitochondrial DNA, thus providing a new anticancer mechanism of action for the naphthalimide monofunctional platinum(II) complexes.
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Affiliation(s)
- Yan Guo
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , People's Republic of China
| | - Yafeng He
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , People's Republic of China
| | - Shengde Wu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , People's Republic of China
| | - Shuren Zhang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , People's Republic of China
| | - Dongfan Song
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , People's Republic of China
| | - Zhenzhu Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences , Nanjing University , Nanjing 210023 , People's Republic of China
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , People's Republic of China
| | - Xiaoyong Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences , Nanjing University , Nanjing 210023 , People's Republic of China
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9
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Gurruchaga-Pereda J, Martínez Á, Terenzi A, Salassa L. Anticancer platinum agents and light. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.118981] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Ramu V, Gautam S, Kondaiah P, Chakravarty AR. Diplatinum(II) Catecholate of Photoactive Boron-Dipyrromethene for Lysosome-Targeted Photodynamic Therapy in Red Light. Inorg Chem 2019; 58:9067-9075. [PMID: 31268715 DOI: 10.1021/acs.inorgchem.9b00567] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The binuclear platinum(II) boron-dipyrromethene (BODIPY) complex [{Pt(dach)}2(μ-Dcrb)] (DP), where dach is 1,2-diaminocyclohexane and H4Dcrb is a morpholine-conjugated BODIPY-linked dicatechol bridging ligand, was prepared for lysosome organelle targeting and near-IR (NIR) light (600-720 nm) induced photocytotoxic activity. The platinum complex [Pt(dach)(cat)] (CP), where H2cat is catechol, was synthesized and used as a control complex without bearing the BODIPY unit. The complex DP displayed a band at 660 nm (ε = 2.1 × 104 M-1 cm-1) in the red region of the UV-visible spectrum recorded in 10% dimethyl sulfoxide/Dulbecco's Modified Eagle's Medium (DMSO/DMEM, pH 7.2). The complex DP and the BODIPY ligand displayed emission in 10% DMSO-DMEM (pH 7.2) giving an λem value of 668 nm (λex = 650 nm) with a ΦF value of 0.02 for DP and 0.16 for H4Dcrb (ΦF, fluorescence quantum yield). Titration experiments using 1,3-diphenylisobenzofuran (DPBF) indicated that the complex DP and H4Dcrb on irradiation with near-IR light of 600-720 nm generated singlet oxygen (1O2) as the ROS (reactive oxygen species). The complex DP showed significant lysosomal localization and remarkable apoptotic photodynamic therapy (PDT) effects, giving half-maximal inhibitory concentration values (IC50) within 0.6-3.4 μM in HeLa cervical cancer, A549 lung cancer, and MDA-MB231 multidrug resistant cancer cells, while being essentially nontoxic in the dark and in the HPL1D immortalized lung epithelial normal cells. The acridine orange assay using A549 cells showed lysosomal membrane permeabilization by the complex DP under near-IR light (600-720 nm). This complex on near-IR light (600-720 nm) activation in A549 cells induced apoptotic cell death, as observed from an Annexin-V FITC assay.
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11
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Abstract
The success of platinum-based anticancer agents has motivated the exploration of novel metal-based drugs for several decades, whereas problems such as drug-resistance and systemic toxicity hampered their clinical applications and efficacy. Stimuli-responsiveness of some metal complexes offers a good opportunity for designing site-specific prodrugs to maximize the therapeutic efficacy and minimize the side effect of metallodrugs. This review presents a comprehensive and up-to-date overview on the therapeutic stimuli-responsive metallodrugs that have appeared in the past two decades, where stimuli such as redox, pH, enzyme, light, temperature, and so forth were involved. The compounds are classified into three major categories based on the nature of stimuli, that is, endo-stimuli-responsive metallodrugs, exo-stimuli-responsive metallodrugs, and dual-stimuli-responsive metallodrugs. Representative examples of each type are discussed in terms of structure, response mechanism, and potential medical applications. In the end, future opportunities and challenges in this field are tentatively proposed. With diverse metal complexes being introduced, the foci of this review are pointed to platinum and ruthenium complexes.
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Affiliation(s)
- Xiaohui Wang
- College of Chemistry and Molecular Engineering , Nanjing Tech University , Nanjing 211816 , P. R. China
| | - Xiaoyong Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences , Nanjing University , Nanjing 210023 , P. R. China
| | - Suxing Jin
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences , Nanjing University , Nanjing 210023 , P. R. China
| | - Nafees Muhammad
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry , Sun Yat-Sen University , Guangzhou 510275 , P. R. China
| | - Zijian Guo
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210093 , P. R. China
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12
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Zhu M, Peng T, Sun N, Qiu X, Zhan Y, Ding Y, Zhang S, Gao E. A series of novel complexes firstly constructed by 1,4-phenylenedioxydiacetic acid plays a role in disruption of DNA gene expression and induction of apoptosis. J Inorg Biochem 2018; 180:141-154. [DOI: 10.1016/j.jinorgbio.2017.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 11/03/2017] [Accepted: 11/04/2017] [Indexed: 10/18/2022]
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13
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Walther T, Herzog R, Kaluđerović MR, Wagner C, Schmidt H, Kaluđerović GN. Traceable platinum(II) complexes with alkylene diamine-derived ligands: synthesis, characterization and in vitro studies. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1431392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Till Walther
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Renate Herzog
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Milena R. Kaluđerović
- Department of Oral, Maxillary, Facial and Reconstructive Plastic Surgery, University Hospital of Leipzig, Leipzig, Germany
| | - Christoph Wagner
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Harry Schmidt
- Institute of Chemistry, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Goran N. Kaluđerović
- Department of Bioorganic Chemistry, Leibniz-Institute of Plant Biochemistry, Halle (Saale), Germany
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14
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Mitra K. Platinum complexes as light promoted anticancer agents: a redefined strategy for controlled activation. Dalton Trans 2018; 45:19157-19171. [PMID: 27883129 DOI: 10.1039/c6dt03665a] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Site-specific delivery and amenable activation of prodrugs are indispensible criteria for designing novel anticancer agents. Platinum based drugs vanguard the chemotherapeutic regimes and over the years significant attention has been paid to achieve more efficacious drugs with fewer adverse effects. The switch from platinum(ii) drugs to the inert platinum(iv) analogues proved advantageous but the new prodrugs still suffered from unspecific cytotoxic actions. Thus the photoactivation of an inert platinum prodrug specifically within neoplastic cells provided the desired spatio-temporal control over drug activation by means of illumination, thereby limiting the cytotoxic events to only at the targeted tumors. This article collates research on platinum complexes which exhibit potential light mediated anticancer effects and provides insights into the underlying mechanisms of activation. Fine tuning of the coordination sphere results in dramatic alteration of the redox and spectral properties of both ground and excited states and the cellular properties of the molecules. This concise article highlights the various light promoted strategies employed to attain a controlled release of active platinum(ii) and/or reactive oxygen species such as photoreduction, photocaging, photodissociation and photosensitization. Such dual action photoactive metal complexes with improved aqueous solubility and versatility are promising candidates for combination therapy which is likely to be the future of anticancer research.
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Affiliation(s)
- Koushambi Mitra
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560-012, India.
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15
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Tskhovrebov AG, Vasileva AA, Goddard R, Riedel T, Dyson PJ, Mikhaylov VN, Serebryanskaya TV, Sorokoumov VN, Haukka M. Palladium(II)-Stabilized Pyridine-2-Diazotates: Synthesis, Structural Characterization, and Cytotoxicity Studies. Inorg Chem 2018; 57:930-934. [PMID: 29356518 DOI: 10.1021/acs.inorgchem.8b00072] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Well-defined diazotates are scarce. Here we report the synthesis of unprecedented homoleptic palladium(II) diazotate complexes. The palladium(II)-mediated nitrosylation of 2-aminopyridines with NaNO2 results in the formation of metal-stabilized diazotates, which were found to be cytotoxic to human ovarian cancer cells.
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Affiliation(s)
- Alexander G Tskhovrebov
- St. Petersburg State University , Universitetskaya Nab. 7/9, St. Petersburg, Russian Federation.,Max-Planck-Institut für Kohlenforschung , D-45470 Mülheim/Ruhr, Germany
| | - Anna A Vasileva
- St. Petersburg State University , Universitetskaya Nab. 7/9, St. Petersburg, Russian Federation
| | - Richard Goddard
- Max-Planck-Institut für Kohlenforschung , D-45470 Mülheim/Ruhr, Germany
| | - Tina Riedel
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne , CH-1015 Lausanne, Switzerland
| | - Paul J Dyson
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne , CH-1015 Lausanne, Switzerland
| | - Vladimir N Mikhaylov
- St. Petersburg State University , Universitetskaya Nab. 7/9, St. Petersburg, Russian Federation
| | - Tatiyana V Serebryanskaya
- Research Institute for Physical Chemical Problems of the Belarusian State University, 14, Leningradskaya Str., 220030 Minsk, Belarus
| | - Viktor N Sorokoumov
- St. Petersburg State University , Universitetskaya Nab. 7/9, St. Petersburg, Russian Federation
| | - Matti Haukka
- Department of Chemistry, University of Jyväskylä , P.O. Box 35, FI-40014 Jyväskylä, Finland
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16
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Samper KG, Marker SC, Bayón P, MacMillan SN, Keresztes I, Palacios Ò, Wilson JJ. Reprint of “Anticancer activity of hydroxy- and sulfonamide-azobenzene platinum(II) complexes in cisplatin-resistant ovarian cancer cells”. J Inorg Biochem 2017; 177:335-343. [DOI: 10.1016/j.jinorgbio.2017.07.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/13/2017] [Accepted: 06/12/2017] [Indexed: 11/28/2022]
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17
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Raza MK, Gautam S, Garai A, Mitra K, Kondaiah P, Chakravarty AR. Monofunctional BODIPY-Appended Imidazoplatin for Cellular Imaging and Mitochondria-Targeted Photocytotoxicity. Inorg Chem 2017; 56:11019-11029. [PMID: 28846407 DOI: 10.1021/acs.inorgchem.7b01346] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Monofunctional platinum(II) complexes of formulation cis-[Pt(NH3)2(L)Cl](NO3), where L is an imidazole base conjugated to 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) with emissive (L1 in 1) and nonemissive (L2 in 2) moieties were prepared and characterized, and their singlet oxygen-mediated photoinduced cytotoxicity was studied. The 1-methylimidazole (1-MeIm) complex 3 was prepared as a control and for structural characterization by X-ray crystallography. Complexes 1 and 2 showed strong visible absorption bands at 500 nm (ε = 2.7 × 104 M-1 cm-1) and 540 nm (1.4 × 104 M-1 cm-1). Complex 1 is emissive with a band at 510 nm (ΦF = 0.09) in 1% dimethyl sulfoxide/Dulbecco's Modified Eagle's Medium (pH 7.2). Singlet oxygen generation upon photoirradiation with visible light (400-700 nm) was evidenced from 1,3-diphenylisobenzofuran titration experiments showing significant photosensitizing ability of the BODIPY complexes. Both 1 and 2 were remarkably photocytotoxic in visible light (400-700 nm, 10 J cm-2) in skin keratinocyte HaCaT and breast cancer MCF-7 cells giving IC50 values in nanomolar concentration. The complexes were, however, essentially nontoxic to the cells in the dark (IC50 > 80 μM). Complex 2 having a diiodo-BODIPY unit is nonemissive but an efficient photosensitizer with high singlet oxygen generation ability in visible light (400-700 nm). Confocal microscopy using the emissive complex 1 showed significant mitochondrial localization of the complex. Cell death via apoptotic pathway was observed from the Annexin-V-FITC/PI assay. The formation of Pt-DNA adducts was evidenced from the binding experiments of the complexes 1 and 2 with 9-ethylguanine as a model nucleobase from 1H NMR and mass spectral studies.
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Affiliation(s)
- Md Kausar Raza
- Department of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science , Bangalore 560012, India
| | - Srishti Gautam
- Department of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science , Bangalore 560012, India
| | - Aditya Garai
- Department of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science , Bangalore 560012, India
| | - Koushambi Mitra
- Department of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science , Bangalore 560012, India
| | - Paturu Kondaiah
- Department of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science , Bangalore 560012, India
| | - Akhil R Chakravarty
- Department of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science , Bangalore 560012, India
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18
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Samper KG, Marker SC, Bayón P, MacMillan SN, Keresztes I, Palacios Ò, Wilson JJ. Anticancer activity of hydroxy- and sulfonamide-azobenzene platinum(II) complexes in cisplatin-resistant ovarian cancer cells. J Inorg Biochem 2017. [PMID: 28651169 DOI: 10.1016/j.jinorgbio.2017.06.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The syntheses of three platinum(II) complexes bearing sulfonamide- ( (E)-2-(4-methylphenylsulfonamido)-2',6'-difluoroazobenzene, HL1) and hydroxy-azo-2,6-difluorobenzene ((E)-2-((2,6-difluorophenyl)diazenyl)phenol, HL2) bidentate ligands is described. These complexes, [Pt(L1)(DMSO)Cl] (1), [Pt(L2)(DMSO)Cl] (2), and [Pt(L2)2] (3), were characterized by multinuclear NMR spectroscopy, mass spectrometry, and X-ray crystallography. Despite bearing azobenzene functional groups, none of the three complexes undergo photoisomerization. The anticancer activities of these complexes were evaluated in wild-type (A2780) and cisplatin-resistant (A2780CP70) ovarian cancer cells. All three complexes exhibited IC50 values below 10μM and displayed similar activity in both A2780 and A2780CP70 cell lines, indicating that they are not cross-resistant with cisplatin. The DNA-binding properties of 1-3 were investigated by circular dichroism spectroscopy and by agarose gel electrophoresis. Both studies suggest that 1 and 2 form monofunctional DNA adducts.
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Affiliation(s)
- Katia G Samper
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, United States; Departament de Química, Facultat de Ciències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain
| | - Sierra C Marker
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, United States
| | - Pau Bayón
- Departament de Química, Facultat de Ciències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain
| | - Samantha N MacMillan
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, United States
| | - Ivan Keresztes
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, United States
| | - Òscar Palacios
- Departament de Química, Facultat de Ciències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, E-08193 Barcelona, Spain.
| | - Justin J Wilson
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, United States.
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19
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Gómez-Santacana X, Pittolo S, Rovira X, Lopez M, Zussy C, Dalton JAR, Faucherre A, Jopling C, Pin JP, Ciruela F, Goudet C, Giraldo J, Gorostiza P, Llebaria A. Illuminating Phenylazopyridines To Photoswitch Metabotropic Glutamate Receptors: From the Flask to the Animals. ACS CENTRAL SCIENCE 2017; 3:81-91. [PMID: 28149957 PMCID: PMC5269660 DOI: 10.1021/acscentsci.6b00353] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Indexed: 06/06/2023]
Abstract
Phenylazopyridines are photoisomerizable compounds with high potential to control biological functions with light. We have obtained a series of phenylazopyridines with light dependent activity as negative allosteric modulators (NAM) of metabotropic glutamate receptor subtype 5 (mGlu5). Here we describe the factors needed to achieve an operational molecular photoisomerization and its effective translation into in vitro and in vivo receptor photoswitching, which includes zebrafish larva motility and the regulation of the antinociceptive effects in mice. The combination of light and some specific phenylazopyridine ligands displays atypical pharmacological profiles, including light-dependent receptor overactivation, which can be observed both in vitro and in vivo. Remarkably, the localized administration of light and a photoswitchable compound in the peripheral tissues of rodents or in the brain amygdalae results in an illumination-dependent analgesic effect. The results reveal a robust translation of the phenylazopyridine photoisomerization to a precise photoregulation of biological activity.
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Affiliation(s)
- Xavier Gómez-Santacana
- MCS,
Laboratory of Medicinal Chemistry & Synthesis, Institute for Advanced Chemistry of Catalonia (IQAC−CSIC), Barcelona, Spain
- Institute
for Bioengineering of Catalonia (IBEC), Barcelona, Spain
- Institut
de Neurociències and Unitat de Bioestadística, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Silvia Pittolo
- Institute
for Bioengineering of Catalonia (IBEC), Barcelona, Spain
| | - Xavier Rovira
- Institute
of Functional Genomics, Université de Montpellier, Unité
Mixte de Recherche 5302 CNRS, Montpellier, France
- Unité
de recherche U1191, INSERM, Montpellier, France
| | - Marc Lopez
- Unitat
de Farmacologia, Departament Patologia i Terapèutica Experimental,
Facultat de Medicina, IDIBELL, Universitat
de Barcelona, Barcelona, Spain
- Institut
de Neurociències, Universitat de
Barcelona, Barcelona, Spain
| | - Charleine Zussy
- Institute
of Functional Genomics, Université de Montpellier, Unité
Mixte de Recherche 5302 CNRS, Montpellier, France
- Unité
de recherche U1191, INSERM, Montpellier, France
| | - James A. R. Dalton
- Institut
de Neurociències and Unitat de Bioestadística, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Adèle Faucherre
- Institute
of Functional Genomics, Université de Montpellier, Unité
Mixte de Recherche 5302 CNRS, Montpellier, France
- Unité
de recherche U1191, INSERM, Montpellier, France
| | - Chris Jopling
- Institute
of Functional Genomics, Université de Montpellier, Unité
Mixte de Recherche 5302 CNRS, Montpellier, France
- Unité
de recherche U1191, INSERM, Montpellier, France
| | - Jean-Philippe Pin
- Institute
of Functional Genomics, Université de Montpellier, Unité
Mixte de Recherche 5302 CNRS, Montpellier, France
- Unité
de recherche U1191, INSERM, Montpellier, France
| | - Francisco Ciruela
- Unitat
de Farmacologia, Departament Patologia i Terapèutica Experimental,
Facultat de Medicina, IDIBELL, Universitat
de Barcelona, Barcelona, Spain
- Institut
de Neurociències, Universitat de
Barcelona, Barcelona, Spain
| | - Cyril Goudet
- Institute
of Functional Genomics, Université de Montpellier, Unité
Mixte de Recherche 5302 CNRS, Montpellier, France
- Unité
de recherche U1191, INSERM, Montpellier, France
| | - Jesús Giraldo
- Institut
de Neurociències and Unitat de Bioestadística, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
- Network Biomedical Research Center on Mental Health
(CIBERSAM), Madrid, Spain
| | - Pau Gorostiza
- Institute
for Bioengineering of Catalonia (IBEC), Barcelona, Spain
- Network
Biomedical Research Center on Bioengineering, Biomaterials and Nanomedicine
(CIBER-BBN), Madrid, Spain
- Catalan
Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
| | - Amadeu Llebaria
- MCS,
Laboratory of Medicinal Chemistry & Synthesis, Institute for Advanced Chemistry of Catalonia (IQAC−CSIC), Barcelona, Spain
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20
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Ricciardi L, La Deda M, Ionescu A, Godbert N, Aiello I, Ghedini M. Anionic cyclometallated Pt(ii) square-planar complexes: new sets of highly luminescent compounds. Dalton Trans 2017; 46:12625-12635. [DOI: 10.1039/c7dt02267k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Novel anionic Pt(ii) complexes were synthesized, displaying an outstanding enhancement of the emission efficiency in the solid state.
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Affiliation(s)
- Loredana Ricciardi
- CNR NANOTEC-Istituto di Nanotecnologia U.O.S. Cosenza
- 87036 Arcavacata di Rende
- Italy
| | - Massimo La Deda
- CNR NANOTEC-Istituto di Nanotecnologia U.O.S. Cosenza
- 87036 Arcavacata di Rende
- Italy
- MAT_INLAB (Laboratorio di Materiali Molecolari Inorganici)
- Centro di Eccellenza CEMIF.CAL
| | - Andreea Ionescu
- MAT_INLAB (Laboratorio di Materiali Molecolari Inorganici)
- Centro di Eccellenza CEMIF.CAL
- LASCAMM CR-INSTM
- Unità INSTM della Calabria
- Dipartimento di Chimica e Tecnologie Chimiche
| | - Nicolas Godbert
- CNR NANOTEC-Istituto di Nanotecnologia U.O.S. Cosenza
- 87036 Arcavacata di Rende
- Italy
- MAT_INLAB (Laboratorio di Materiali Molecolari Inorganici)
- Centro di Eccellenza CEMIF.CAL
| | - Iolinda Aiello
- CNR NANOTEC-Istituto di Nanotecnologia U.O.S. Cosenza
- 87036 Arcavacata di Rende
- Italy
- MAT_INLAB (Laboratorio di Materiali Molecolari Inorganici)
- Centro di Eccellenza CEMIF.CAL
| | - Mauro Ghedini
- CNR NANOTEC-Istituto di Nanotecnologia U.O.S. Cosenza
- 87036 Arcavacata di Rende
- Italy
- MAT_INLAB (Laboratorio di Materiali Molecolari Inorganici)
- Centro di Eccellenza CEMIF.CAL
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21
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Mitra K, Gautam S, Kondaiah P, Chakravarty AR. Platinum(II) Complexes of Curcumin Showing Photocytotoxicity in Visible Light. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201601078] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Koushambi Mitra
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; 560-012 Bangalore India
| | - Srishti Gautam
- Department of Molecular Reproduction; Development and Genetics; Indian Institute of Science; 560-012 Bangalore India
| | - Paturu Kondaiah
- Department of Molecular Reproduction; Development and Genetics; Indian Institute of Science; 560-012 Bangalore India
| | - Akhil R. Chakravarty
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; 560-012 Bangalore India
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22
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Mitra K, Shettar A, Kondaiah P, Chakravarty AR. Biotinylated Platinum(II) Ferrocenylterpyridine Complexes for Targeted Photoinduced Cytotoxicity. Inorg Chem 2016; 55:5612-22. [DOI: 10.1021/acs.inorgchem.6b00680] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Koushambi Mitra
- Department
of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction,
Development and Genetics, Indian Institute of Science, Bangalore 560012, India
| | - Abhijith Shettar
- Department
of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction,
Development and Genetics, Indian Institute of Science, Bangalore 560012, India
| | - Paturu Kondaiah
- Department
of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction,
Development and Genetics, Indian Institute of Science, Bangalore 560012, India
| | - Akhil R. Chakravarty
- Department
of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction,
Development and Genetics, Indian Institute of Science, Bangalore 560012, India
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23
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Gala E, Reyes MJ, Alvarez-Builla J, Izquierdo ML. Regioselective Synthesis of 2-Amino-5-(or 3-)arylazo-Substituted Pyridines and Pyrazines from Pyridinium N-Aminides. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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24
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MONDAL PALASH, PARUA SANKARPRASAD, PATTANAYAK POULAMI, DAS UTTAM, CHATTOPADHYAY SURAJIT. Synthesis and structure of copper(II) complexes: Potential cyanide sensor and oxidase model. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1063-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Photodynamic killing of cancer cells by a Platinum(II) complex with cyclometallating ligand. Sci Rep 2016; 6:22668. [PMID: 26940077 PMCID: PMC4778139 DOI: 10.1038/srep22668] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Accepted: 02/16/2016] [Indexed: 01/17/2023] Open
Abstract
Photodynamic therapy that uses photosensitizers which only become toxic upon light-irradiation provides a strong alternative to conventional cancer treatment due to its ability to selectively target tumour material without affecting healthy tissue. Transition metal complexes are highly promising PDT agents due to intense visible light absorption, yet the majority are toxic even without light. This study introduces a small, photostable, charge-neutral platinum-based compound, Pt(II) 2,6-dipyrido-4-methyl-benzenechloride, complex 1, as a photosensitizer, which works under visible light. Activation of the new photosensitizer at low concentrations (0.1–1 μM) by comparatively low dose of 405 nm light (3.6 J cm−2) causes significant cell death of cervical, colorectal and bladder cancer cell lines, and, importantly, a cisplatin resistant cell line EJ-R. The photo-index of the complex is 8. We demonstrate that complex 1 induces irreversible DNA single strand breaks following irradiation, and that oxygen is essential for the photoinduced action. Neither light, nor compound alone led to cell death. The key advantages of the new drug include a remarkably fast accumulation time (diffusion-controlled, minutes), and photostability. This study demonstrates a highly promising new agent for photodynamic therapy, and attracts attention to photostable metal complexes as viable alternatives to conventional chemotherapeutics, such as cisplatin.
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26
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Purkait K, Chatterjee S, Karmakar S, Mukherjee A. Alteration of steric hindrance modulates glutathione resistance and cytotoxicity of three structurally related RuII-p-cymene complexes. Dalton Trans 2016; 45:8541-55. [DOI: 10.1039/c5dt04781a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Three structurally related RuII-p-cymene complexes of imidazole based Schiff bases show steric hindrance influences, hypoxia reactivity, cell cycle arrest and resistance to glutathione. The complexes show anti-metastatic and anti-angiogenic effects.
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Affiliation(s)
- Kallol Purkait
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur Campus
- India
| | - Saptarshi Chatterjee
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur Campus
- India
| | - Subhendu Karmakar
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur Campus
- India
| | - Arindam Mukherjee
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur Campus
- India
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27
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Raza MK, Mitra K, Shettar A, Basu U, Kondaiah P, Chakravarty AR. Photoactive platinum(ii) β-diketonates as dual action anticancer agents. Dalton Trans 2016; 45:13234-43. [DOI: 10.1039/c6dt02590k] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cyclometallated platinum(ii) β-diketonates show significant photocytotoxicity in skin-keratinocyte HaCaT cells [IC50: ∼10 μM (visible light, 400–700 nm), ≥60 μM (dark)].
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Affiliation(s)
- Md Kausar Raza
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Koushambi Mitra
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Abhijith Shettar
- Department of Molecular Reproduction
- Development and Genetics
- Indian Institute of Science
- Bangalore 560012
- India
| | - Uttara Basu
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Paturu Kondaiah
- Department of Molecular Reproduction
- Development and Genetics
- Indian Institute of Science
- Bangalore 560012
- India
| | - Akhil R. Chakravarty
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
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28
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Mitra K, Gautam S, Kondaiah P, Chakravarty AR. Thecis-Diammineplatinum(II) Complex of Curcumin: A Dual Action DNA Crosslinking and Photochemotherapeutic Agent. Angew Chem Int Ed Engl 2015; 54:13989-93. [DOI: 10.1002/anie.201507281] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 08/19/2015] [Indexed: 01/17/2023]
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29
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Mitra K, Gautam S, Kondaiah P, Chakravarty AR. The
cis
‐Diammineplatinum(II) Complex of Curcumin: A Dual Action DNA Crosslinking and Photochemotherapeutic Agent. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507281] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Koushambi Mitra
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, Karnataka (India)
| | - Srishti Gautam
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560012, Karnataka (India)
| | - Paturu Kondaiah
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560012, Karnataka (India)
| | - Akhil R. Chakravarty
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, Karnataka (India)
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30
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Dasari S, Patra AK. Luminescent europium and terbium complexes of dipyridoquinoxaline and dipyridophenazine ligands as photosensitizing antennae: structures and biological perspectives. Dalton Trans 2015; 44:19844-55. [DOI: 10.1039/c5dt02852c] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Luminescent europium and terbium complexes of quinoxaline and phenazine ligands were studied for their structures, luminescence properties, interaction with DNA, and photo-induced DNA cleavage activity.
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Affiliation(s)
- Srikanth Dasari
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Ashis K. Patra
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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