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Fu Q, Gu Z, Shen S, Bai Y, Wang X, Xu M, Sun P, Chen J, Li D, Liu Z. Radiotherapy activates picolinium prodrugs in tumours. Nat Chem 2024:10.1038/s41557-024-01501-4. [PMID: 38561425 DOI: 10.1038/s41557-024-01501-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 03/05/2024] [Indexed: 04/04/2024]
Abstract
Radiotherapy-induced prodrug activation provides an ideal solution to reduce the systemic toxicity of chemotherapy in cancer therapy, but the scope of the radiation-activated protecting groups is limited. Here we present that the well-established photoinduced electron transfer chemistry may pave the way for developing versatile radiation-removable protecting groups. Using a functional reporter assay, N-alkyl-4-picolinium (NAP) was identified as a caging group that efficiently responds to radiation by releasing a client molecule. When evaluated in a competition experiment, the NAP moiety is more efficient than other radiation-removable protecting groups discovered so far. Leveraging this property, we developed a NAP-derived carbamate linker that releases fluorophores and toxins on radiation, which we incorporated into antibody-drug conjugates (ADCs). These designed ADCs were active in living cells and tumour-bearing mice, highlighting the potential to use such a radiation-removable protecting group for the development of next-generation ADCs with improved stability and therapeutic effects.
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Affiliation(s)
- Qunfeng Fu
- Changping Laboratory, Beijing, China
- Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Zhi Gu
- Changping Laboratory, Beijing, China
- Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Siyong Shen
- Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Yifei Bai
- Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Xianglin Wang
- Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Mengxin Xu
- Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Pengwei Sun
- Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Junyi Chen
- Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Dongxuan Li
- Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Zhibo Liu
- Changping Laboratory, Beijing, China.
- Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.
- Peking University-Tsinghua University Center for Life Sciences, Peking University, Beijing, China.
- Key Laboratory of Carcinogenesis and Translational Research of Ministry of Education, NMPA Key Laboratory for Research and Evaluation of Radiopharmaceuticals, Department of Nuclear Medicine, Peking University Cancer Hospital and Institute, Beijing, China.
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Kariyawasam RJ, Zibaseresht R, Polson MIJ, Houlihan JCC, Wikaira JL, Hartshorn RM. Synthesis of nitrogen mustards on cobalt(III). Dalton Trans 2023; 52:16364-16375. [PMID: 37867442 DOI: 10.1039/d3dt01634j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
Bis(bidentate) and bis(tridentate) Co(III) complexes of N-(2-hydroxyethyl)ethane-1,2-diamine (heen), 2-[(2-aminoethyl)amino]ethan-1-olate (heen-H), or N-(2-chloroethyl)ethane-1,2-diamine (ceen) ligands have been synthesised, and a range of reaction conditions established for their syntheses by different routes. They can all be ultimately derived from (OC-6-12')-[Co(heen)2(NO2)2]NO3 and provide access to the trans amine trans chloride nitrogen mustard complex, (OC-6-12')-[Co(ceen)2(Cl)2]Cl. Although complex isomeric mixtures were obtained from the reaction of (OC-6-12')-[Co(heen)2(NO2)2]NO3 under different reaction conditions, ultimately, the trans amine trans chlorido configuration around the Co(III) metal centre of the (OC-6-12')-[Co(ceen)2(Cl)2]Cl complex was favoured.
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Affiliation(s)
- Rasika J Kariyawasam
- School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand.
| | - Ramin Zibaseresht
- Department of Chemistry and Physics, Faculty of Sciences, Maritime University of Imam Khomeini, Noshahr, Iran
| | - Matthew I J Polson
- School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand.
| | - Joanna C C Houlihan
- School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand.
| | - Jan L Wikaira
- School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand.
| | - Richard M Hartshorn
- School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand.
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3
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Yang L, Song N, Zhang D, Wang S, Zhou Z. Accurate Matching of a Secondary Amino-Functionality Metal-Organic Cage for Selective Recognition and Supramolecular Binding during Photoinduced Hydrogen Evolution. Inorg Chem 2023; 62:17705-17712. [PMID: 37844205 DOI: 10.1021/acs.inorgchem.3c02331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Accurate matching of the active sites between the host and guest molecules has a great effect on the selective recognition of different but similar guest molecules or different binding abilities toward the same molecule. Herein, a pseudotetrahedral metal-organic cage (MOC, Co-TAP) that contains secondary amino groups designed as guest-interacting sites was achieved. Co-TAP exhibits the selective recognition of uridine over other similar natural molecules via a fluorescent response. However, a reference structure (Co-TOP) with the same configuration was also synthesized by replacing the secondary amine group with an oxygen atom of the ligand, and it reveals the selective recognition of guanosine. In addition, the accurate matching also enables Co-TAP to strongly bind the organic dye as a guest molecule via host-guest interactions, thus facilitating photoinduced electron transfer between the redox catalytic sites in MOC and the excited guest via a pseudointramolecular pathway.
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Affiliation(s)
- Lu Yang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
| | - Nuan Song
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
| | - Daopeng Zhang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
| | - Suna Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P. R. China
| | - Zhen Zhou
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
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4
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Mishra S, Tripathy SK, Paul D, Laha P, Santra MK, Patra S. Asymmetrically Coordinated Heterodimetallic Ir-Ru System: Synthesis, Computational, and Anticancer Aspects. Inorg Chem 2023; 62:7003-7013. [PMID: 37097171 DOI: 10.1021/acs.inorgchem.3c00272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
Herein, we present an unprecedented formation of a heterodinuclear complex [{(ppy)2IrIII}(μ-phpy){RuII(tpy)}](ClO4)2 {[1](ClO4)2} using terpyridyl/phenylpyridine as ancillary ligands and asymmetric phpy as a bridging ligand. The asymmetric binding mode (N∧N-∩-N∧N∧C-) of the phpy ligand in {[1](ClO4)2} is confirmed by 1H, 13C, 1H-1H correlated spectroscopy (COSY), high-resolution mass spectrum (HRMS), single-crystal X-ray crystallography techniques, and solution conductivity measurements. Theoretical investigation suggests that the highest occupied molecular orbital (HOMO) and the least unoccupied molecular orbital (LUMO) of [1]2+ are located on iridium/ppy and phpy, respectively. The complex displays a broad low energy charge transfer (CT) band within 450-575 nm. The time-dependent density functional theory (TDDFT) analysis suggests this as a mixture of metal-to-ligand charge transfer (MLCT) and ligand-to-ligand charge transfer (LLCT), where both ruthenium, iridium, and ligands are involved. Complex {[1](ClO4)2} exhibits RuIIIrIII/RuIIIIrIII- and RuIIIIrIII/RuIIIIrIV-based oxidative couples at 0.83 and 1.39 V, respectively. The complex shows anticancer activity and selectivity toward human breast cancer cells (IC50; MCF-7: 9.3 ± 1.2 μM, and MDA-MB-231: 8.6 ± 1.2 μM) over normal breast cells (MCF 10A: IC50 ≈ 21 ± 1.3 μM). The Western blot analysis and fluorescence microscopy images suggest that combined apoptosis and autophagy are responsible for cancer cell death.
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Affiliation(s)
- Saumyaranjan Mishra
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Jatni 752050, Odisha, India
| | - Suman Kumar Tripathy
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Jatni 752050, Odisha, India
| | - Debasish Paul
- National Centre for Cell Science, NCCS Complex, Pune University Campus Ganeshkhind, Pune 411007, Maharashtra, India
| | - Paltan Laha
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Jatni 752050, Odisha, India
| | - Manas Kumar Santra
- National Centre for Cell Science, NCCS Complex, Pune University Campus Ganeshkhind, Pune 411007, Maharashtra, India
| | - Srikanta Patra
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Argul, Jatni 752050, Odisha, India
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Akitsu T, Miroslaw B, Sudarsan S. Photofunctions in Hybrid Systems of Schiff Base Metal Complexes and Metal or Semiconductor (Nano)Materials. Int J Mol Sci 2022; 23:ijms231710005. [PMID: 36077409 PMCID: PMC9456394 DOI: 10.3390/ijms231710005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 08/22/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
Composite materials very often provide new catalytic, optical or other physicochemical properties not observed for each component separately. Photofunctions in hybrid systems are an interesting topic of great importance for industry. This review presents the recent advances, trends and possible applications of photofunctions of hybrid systems composed of Schiff base metal complexes and metal or semiconductor (nano)materials. We focus on photocatalysis, sensitization in solar cells (DSSC-dye sensitized solar cell), ligand-induced chirality and applications in environmental protection for Cr(VI) to Cr(III) reduction, in cosmetology as sunscreens, in real-time visualization of cellular processes, in bio-labeling, and in light activated prodrug applications.
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Affiliation(s)
- Takashiro Akitsu
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
- Correspondence: (T.A.); (B.M.); Tel.: +81-3-5228-8271 (T.A.)
| | - Barbara Miroslaw
- Department of General and Coordination Chemistry and Crystallography, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Pl. Marii Curie-Sklodowskiej 3, 20-031 Lublin, Poland
- Correspondence: (T.A.); (B.M.); Tel.: +81-3-5228-8271 (T.A.)
| | - Shanmugavel Sudarsan
- Department of Chemistry, Rajalakshmi Engineering College (Autonomous), Thandalam 602 105, Tamilnadu, India
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Jiang J, Cao B, Chen Y, Luo H, Xue J, Xiong X, Zou T. Alkylgold(III) Complexes Undergo Unprecedented Photo-Induced β-Hydride Elimination and Reduction for Targeted Cancer Therapy. Angew Chem Int Ed Engl 2022; 61:e202201103. [PMID: 35165986 DOI: 10.1002/anie.202201103] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Indexed: 11/07/2022]
Abstract
Spatiotemporally controllable activation of prodrugs within tumors is highly desirable for cancer therapy to minimize toxic side effects. Herein we report that stable alkylgold(III) complexes can undergo unprecedented photo-induced β-hydride elimination, releasing alkyl ligands and forming gold(III)-hydride intermediates that could be quickly converted into bioactive [AuIII -S] adducts; meanwhile, the remaining alkylgold(III) complexes can photo-catalytically reduce [AuIII -S] into more bioactive AuI species. Such photo-reactivities make it possible to functionalize gold complexes on the auxiliary alkyl ligands without attenuating the metal-biomacromolecule interactions. As a result, the gold(III) complexes containing glucose-functionalized alkyl ligands displayed efficient and tumor-selective uptake; notably, after one- or two-photon activation, the complexes exhibited high thioredoxin reductase (TrxR) inhibition, potent cytotoxicity, and strong antiangiogenesis and antitumor activities in vivo.
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Affiliation(s)
- Jia Jiang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, P. R. China
| | - Bei Cao
- Warshel Institute for Computational Biology, and General Education Division, The Chinese University of Hong Kong, Shenzhen, 518172, P. R. China
| | - Yuting Chen
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, P. R. China
| | - Hejiang Luo
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, P. R. China
| | - Jiaying Xue
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, P. R. China
| | - Xiaolin Xiong
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, P. R. China
| | - Taotao Zou
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, 510006, P. R. China
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7
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Jiang J, Cao B, Chen Y, Luo H, Xue J, Xiong X, Zou T. Alkylgold(III) Complexes Undergo Unprecedented Photo‐Induced β‐Hydride Elimination and Reduction for Targeted Cancer Therapy. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jia Jiang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-Sen University Guangzhou 510006 P. R. China
| | - Bei Cao
- Warshel Institute for Computational Biology and General Education Division The Chinese University of Hong Kong Shenzhen 518172 P. R. China
| | - Yuting Chen
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-Sen University Guangzhou 510006 P. R. China
| | - Hejiang Luo
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-Sen University Guangzhou 510006 P. R. China
| | - Jiaying Xue
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-Sen University Guangzhou 510006 P. R. China
| | - Xiaolin Xiong
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-Sen University Guangzhou 510006 P. R. China
| | - Taotao Zou
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-Sen University Guangzhou 510006 P. R. China
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Kimura H, Nagasato N, Kato N, Kojima M, Enomoto C, Nakata E, Takashima H. Photophysical and elecron-transfer reaction properties of tris(2,2’-bipyridine)ruthenium(II)-based inhibitors that covalently bound to the active site of chymotrypsin. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2021. [DOI: 10.1016/j.jpap.2021.100027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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9
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Zhao X, Liu J, Fan J, Chao H, Peng X. Recent progress in photosensitizers for overcoming the challenges of photodynamic therapy: from molecular design to application. Chem Soc Rev 2021; 50:4185-4219. [PMID: 33527104 DOI: 10.1039/d0cs00173b] [Citation(s) in RCA: 430] [Impact Index Per Article: 143.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Photodynamic therapy (PDT), a therapeutic mode involving light triggering, has been recognized as an attractive oncotherapy treatment. However, nonnegligible challenges remain for its further clinical use, including finite tumor suppression, poor tumor targeting, and limited therapeutic depth. The photosensitizer (PS), being the most important element of PDT, plays a decisive role in PDT treatment. This review summarizes recent progress made in the development of PSs for overcoming the above challenges. This progress has included PSs developed to display enhanced tolerance of the tumor microenvironment, improved tumor-specific selectivity, and feasibility of use in deep tissue. Based on their molecular photophysical properties and design directions, the PSs are classified by parent structures, which are discussed in detail from the molecular design to application. Finally, a brief summary of current strategies for designing PSs and future perspectives are also presented. We expect the information provided in this review to spur the further design of PSs and the clinical development of PDT-mediated cancer treatments.
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Affiliation(s)
- Xueze Zhao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China.
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Zhang X, Huang X, Xie A, Zhang X, Deng J, Zou D, Zou J. Boosting type I process of Ru(II) compounds by changing tetrazole ligand for enhanced photodynamic therapy against lung cancer. J Inorg Biochem 2020; 212:111236. [PMID: 32889130 DOI: 10.1016/j.jinorgbio.2020.111236] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 08/13/2020] [Accepted: 08/15/2020] [Indexed: 12/14/2022]
Abstract
Boosting the photosensitization type I process will enhance the phototherapy efficacy because the superoxide radicals (O2-) generated during type I process are more toxic than the singlet oxygen (1O2) in type II process. Herein, [Ru(Hdtza)(phen)2][PF6] (1) and [Ru(pytz)(phen)2][PF6] (2) (phen = 1,10-phenanthroline) based on two nitrogen-rich tetrazole ligands, di(2H-tetrazol-5-yl) amine (H2dtza) and 5-(2-pyridyl)tetrazole (Hpytz) have been developed for photodynamic therapy (PDT) against lung cancer, respectively. Nanoprecipitation was used to prepare the nanoparticles (NPs) of both compounds. [Ru(Hdtza)(phen)2][PF6] NPs mainly undergo an electron transfer process to generate O2- while [Ru(pytz)(phen)2][PF6] the direct energy transfer to produce 1O2, which is responsible for the higher phototoxicity of [Ru(Hdtza)(phen)2][PF6] NPs (IC50 ~ 4.8 μg/mL) than that of [Ru(pytz)(phen)2][PF6] NPs (IC50 ~ 13.6 μg/mL) on human lung cancer cells (A549). Furthermore, in vivo study indicates that the tumor proliferation of nude mice can be effectively inhibited with the help of laser when the mice were injected with [Ru(pytz)(phen)2][PF6] NPs. This work may provide a simple strategy to design type I photosensitizers for enhanced photodynamic therapy.
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Affiliation(s)
- Xujing Zhang
- School of Pharmacy, Guilin Medical University, Guilin 541004, Guangxi, PR China
| | - Xiao Huang
- School of Pharmacy, Guilin Medical University, Guilin 541004, Guangxi, PR China
| | - Aize Xie
- The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi, PR China
| | - Xiaochuan Zhang
- Department of Thoracic Surgery, Kunshan Hospital Affiliated to Jiangsu University, Kunshan 215300, Jiangsu, PR China
| | - Jun Deng
- Department of Thoracic Surgery, Kunshan Hospital Affiliated to Jiangsu University, Kunshan 215300, Jiangsu, PR China.
| | - Dengfeng Zou
- School of Pharmacy, Guilin Medical University, Guilin 541004, Guangxi, PR China.
| | - Jianhua Zou
- Jiangsu Laboratory of Advanced Materials, Department of Materials Engineering, Changshu Institute of Technology, 215500, Jiangsu, PR China.
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Felder PS, Keller S, Gasser G. Polymetallic Complexes for Applications as Photosensitisers in Anticancer Photodynamic Therapy. ADVANCED THERAPEUTICS 2019. [DOI: 10.1002/adtp.201900139] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Patrick S. Felder
- Chimie ParisTechPSL UniversityCNRSInstitute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical BiologyF‐75005 Paris France
| | - Sarah Keller
- Chimie ParisTechPSL UniversityCNRSInstitute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical BiologyF‐75005 Paris France
| | - Gilles Gasser
- Chimie ParisTechPSL UniversityCNRSInstitute of Chemistry for Life and Health SciencesLaboratory for Inorganic Chemical BiologyF‐75005 Paris France
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12
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Havranová-Vidláková P, Krömer M, Sýkorová V, Trefulka M, Fojta M, Havran L, Hocek M. Vicinal Diol-Tethered Nucleobases as Targets for DNA Redox Labeling with Osmate Complexes. Chembiochem 2019; 21:171-180. [PMID: 31206939 DOI: 10.1002/cbic.201900388] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Indexed: 12/19/2022]
Abstract
Six-valent osmium (osmate) complexes with nitrogenous ligands have previously been used for the modification and redox labeling of biomolecules involving vicinal diol moieties (typically, saccharides or RNA). In this work, aliphatic (3,4-dihydroxybutyl and 3,4-dihydroxybut-1-ynyl) or cyclic (6-oxo-6-(cis-3,4-dihydroxypyrrolidin-1-yl)hex-2-yn-1-yl, PDI) vicinal diols are attached to nucleobases to functionalize DNA for subsequent redox labeling with osmium(VI) complexes. The diol-linked 2'-deoxyribonucleoside triphosphates were used for the polymerase synthesis of diol-linked DNA, which, upon treatment with K2 OsO3 and bidentate nitrogen ligands, gave the desired Os-labeled DNA, which were characterized by means of the gel-shift assay and ESI-MS. Through ex situ square-wave voltammetry at a basal plane pyrolytic graphite electrode, the efficiency of modification/labeling of individual diols was evaluated. The results show that the cyclic cis-diol (PDI) was a better target for osmylation than that of the flexible aliphatic ones (alkyl- or alkynyl-linked). The osmate adduct-specific voltammetric signal obtained for OsVI -treated DNA decorated with PDI showed good proportionality to the number of PDI per DNA molecule. The OsVI reagents (unlike OsO4 ) do not attack nucleobases; thus offering specificity of modification on the introduced glycol targets.
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Affiliation(s)
| | - Matouš Krömer
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic.,Department of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, Prague-2, 12843, Czech Republic
| | - Veronika Sýkorová
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Mojmír Trefulka
- The Czech Academy of Sciences, Institute of Biophysics, Královopolská 135, 612 65, Brno, Czech Republic
| | - Miroslav Fojta
- The Czech Academy of Sciences, Institute of Biophysics, Královopolská 135, 612 65, Brno, Czech Republic.,Central European Institute of Technology, Masaryk University, Kamenice 753/5, 625 00, Brno, Czech Republic
| | - Luděk Havran
- The Czech Academy of Sciences, Institute of Biophysics, Královopolská 135, 612 65, Brno, Czech Republic
| | - Michal Hocek
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic.,Department of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, Prague-2, 12843, Czech Republic
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13
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Recent developments in penta-, hexa- and heptadentate Schiff base ligands and their metal complexes. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.03.010] [Citation(s) in RCA: 189] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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14
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King AP, Gellineau HA, MacMillan SN, Wilson JJ. Physical properties, ligand substitution reactions, and biological activity of Co(iii)-Schiff base complexes. Dalton Trans 2019; 48:5987-6002. [PMID: 30672949 PMCID: PMC6504617 DOI: 10.1039/c8dt04606a] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Four cobalt(iii) complexes of the general formula [Co(Schiff base)(L)2]+, where L is ammonia (NH3) or 3-fluorobenzylamine (3F-BnNH2), were synthesized. The complexes were characterized by NMR spectroscopy, mass spectrometry, and X-ray crystallography. Their electrochemical properties, ligand substitution mechanisms, and ligand exchange rates in aqueous buffer were investigated. These physical properties were correlated to the cellular uptake and anticancer activities of the complexes. The complexes undergo sequential, dissociative ligand substitution, with the exchange rates depending heavily on the axial ligands. Eyring analyses revealed that the relative ligand exchange rates were largely impacted by differences in the entropy, rather than enthalpy, of activation for the complexes. Performing the substitution reactions in the presence of ascorbate led to a change in the reaction profile and kinetics, but no change in the final product. The cytotoxic activity of the complexes correlates with both the ligand exchange rate and reduction potential, with the more easily reduced and rapidly substituted complexes showing higher toxicity. These relationships may be valuable for the rational design of Co(iii) complexes as anticancer or antiviral prodrugs.
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Affiliation(s)
- A Paden King
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA.
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Córdova Wong BJ, Xu DM, Bao SS, Zheng LM, Lei J. Hofmann Metal-Organic Framework Monolayer Nanosheets as an Axial Coordination Platform for Biosensing. ACS APPLIED MATERIALS & INTERFACES 2019; 11:12986-12992. [PMID: 30860352 DOI: 10.1021/acsami.9b00693] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Two-dimensional (2D) nanomaterials are remarkably attractive platform candidates for signal transduction through fluorescence resonance energy transfer or photo-induced electron-transfer pathway. In this work, a 2D Hofmann metal organic framework (hMOF) monolayer nanosheet was developed as an axial coordination platform for DNA detection via a ligand-to-metal charge-transfer quenching mechanism. Through modulating the position of phosphonate groups of rigid ligands, a layer-structured hMOF was synthesized. The single crystals showed that the adjacent layers were linked via hydrogen bonds between diethyl 4-pyridylphosphonate and the solvent. Furthermore, the 2D hMOF monolayer nanosheets were obtained easily via a top-down method. More significantly, the quenching mechanism was identified as an axial coordination between the open Fe2+ sites of hMOF nanosheets and fluorophores with 91% quenching efficiency, constituting an excellent signal transduction strategy. The smart use of hMOF monolayer nanosheets as an axial coordination platform could lead to promising applications in signal switching or/and sensing devices.
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16
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Ohata J, Martin SC, Ball ZT. Metallvermittelte Funktionalisierung natürlicher Peptide und Proteine: Biokonjugation mit Übergangsmetallen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201807536] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jun Ohata
- Department of Chemistry Rice University 6100 Main Houston TX 77005 USA
| | - Samuel C. Martin
- Department of Chemistry Rice University 6100 Main Houston TX 77005 USA
| | - Zachary T. Ball
- Department of Chemistry Rice University 6100 Main Houston TX 77005 USA
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17
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Ohata J, Martin SC, Ball ZT. Metal‐Mediated Functionalization of Natural Peptides and Proteins: Panning for Bioconjugation Gold. Angew Chem Int Ed Engl 2019; 58:6176-6199. [DOI: 10.1002/anie.201807536] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Indexed: 01/02/2023]
Affiliation(s)
- Jun Ohata
- Department of Chemistry Rice University 6100 Main Houston TX 77005 USA
| | - Samuel C. Martin
- Department of Chemistry Rice University 6100 Main Houston TX 77005 USA
| | - Zachary T. Ball
- Department of Chemistry Rice University 6100 Main Houston TX 77005 USA
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18
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Renfrew AK, O'Neill ES, Hambley TW, New EJ. Harnessing the properties of cobalt coordination complexes for biological application. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.11.027] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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19
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Mede T, Jäger M, Schubert US. "Chemistry-on-the-complex": functional Ru II polypyridyl-type sensitizers as divergent building blocks. Chem Soc Rev 2018; 47:7577-7627. [PMID: 30246196 DOI: 10.1039/c8cs00096d] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Ruthenium polypyridyl type complexes are potent photoactive compounds, and have found - among others - a broad range of important applications in the fields of biomedical diagnosis and phototherapy, energy conversion schemes such as dye-sensitized solar cells (DSSCs) and molecular assemblies for tailored photo-initiated processes. In this regard, the linkage of RuII polypyridyl-type complexes with specific functional moieties is highly desirable to enhance their inherent photophysical properties, e.g., with a targeting function to achieve cell selectivity, or with a dye or redox-active subunits for energy- and electron-transfer. However, the classical approach of performing ligand syntheses first and the formation of Ru complexes in the last steps imposes synthetic limitations with regard to tolerating functional groups or moieties as well as requiring lengthy convergent routes. Alternatively, the diversification of Ru complexes after coordination (termed "chemistry-on-the-complex") provides an elegant complementary approach. In addition to the Click chemistry concept, the rapidly developing synthesis and purification methodologies permit the preparation of Ru conjugates via amidation, alkylation and cross-coupling reactions. In this regard, recent developments in chromatography shifted the limits of purification, e.g., by using new commercialized surface-modified silica gels and automated instrumentation. This review provides detailed insights into applying the "chemistry-on-the-complex" concept, which is believed to stimulate the modular preparation of unpreceded molecular assemblies as well as functional materials based on Ru-based building blocks, including combinatorial approaches.
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Affiliation(s)
- Tina Mede
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
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21
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Sun B, Liang Z, Xie BP, Li RT, Li LZ, Jiang ZH, Bai LP, Chen JX. Fluorescence sensing platform based on ruthenium(II) complexes as high 3S (sensitivity, specificity, speed) and "on-off-on" sensors for the miR-185 detection. Talanta 2017; 179:658-667. [PMID: 29310291 DOI: 10.1016/j.talanta.2017.11.047] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 10/26/2017] [Accepted: 11/16/2017] [Indexed: 12/12/2022]
Abstract
Inspired by the enormous importance attributed to the biological function of miRNA, we pour our attention into the design and synthesis of four ruthenium(II) complexes and evaluate their applications as miR-185 detection agents by spectroscopic measurements. It was found that all complexes can form sensing platform for the detection of the complementary target miR-185 through the introduction of carboxyfluorescein (FAM) labeled single stranded DNA (P-DNA), giving the detection limits of 0.42nM for Ru 1, 0.28nM for Ru 2, 0.32nM for Ru 3, 0.85nM for Ru 4, all with instantaneous detection time in 1min. The results of the binding constant, fluorescence anisotropy (FA) and polyacrylamide gel electrophoresis experiments (PAGE) revealed that the ruthenium(II) complexes prefer to bind P-DNA other than hybrid duplexes DNA@RNA upon recognition, resulting in the detection of miR-185. These results provide useful suggestions in the new type of metal-based miRNA detection agents.
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Affiliation(s)
- Bin Sun
- Guangdong Provincial Key Laboratory of New Drug Screening and Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Zhen Liang
- Guangdong Provincial Key Laboratory of New Drug Screening and Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Bao-Ping Xie
- Guangdong Provincial Key Laboratory of New Drug Screening and Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Rong-Tian Li
- Guangdong Provincial Key Laboratory of New Drug Screening and Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Lin-Ze Li
- Guangdong Provincial Key Laboratory of New Drug Screening and Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Zhi-Hong Jiang
- State Key Laboratory of Quality Research in Chinese Medicine, and Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Taipa 999078, Macau
| | - Li-Ping Bai
- State Key Laboratory of Quality Research in Chinese Medicine, and Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Taipa 999078, Macau
| | - Jin-Xiang Chen
- Guangdong Provincial Key Laboratory of New Drug Screening and Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China.
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22
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Agbale CM, Cardoso MH, Galyuon IK, Franco OL. Designing metallodrugs with nuclease and protease activity. Metallomics 2017; 8:1159-1169. [PMID: 27714031 DOI: 10.1039/c6mt00133e] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The accidental discovery of cisplatin some 50 years ago generated renewed interest in metallopharmaceuticals. Beyond cisplatin, many useful metallodrugs have been synthesized for the diagnosis and treatment of various diseases, but toxicity concerns, and the propensity to induce chemoresistance and secondary cancers make it imperative to search for novel metallodrugs that address these limitations. The Amino Terminal Cu(ii) and Ni(ii) (ATCUN) binding motif has emerged as a suitable template to design catalytic metallodrugs with nuclease and protease activities. Unlike their classical counterparts, ATCUN-based metallodrugs exhibit low toxicity, employ novel mechanisms to irreversibly inactivate disease-associated genes or proteins providing in principle, a channel to circumvent the rapid emergence of chemoresistance. The ATCUN motif thus presents novel strategies for the treatment of many diseases including cancers, HIV and infections caused by drug-resistant bacteria at the genetic level. This review discusses their design, mechanisms of action and potential for further development to expand their scope of application.
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Affiliation(s)
- Caleb Mawuli Agbale
- School of Biological Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast, Ghana and S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, 79117-900 Campo Grande, MS, Brazil.
| | - Marlon Henrique Cardoso
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, 79117-900 Campo Grande, MS, Brazil. and Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, 70719-100 Brasília, DF, Brazil and Programa de Pós-Graduação em Patologia Molecular, Faculdade de Medicina, Universidade de Brasília, 70910-900 Brasília, DF, Brazil
| | - Isaac Kojo Galyuon
- School of Biological Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Octávio Luiz Franco
- S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, 79117-900 Campo Grande, MS, Brazil. and Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, 70719-100 Brasília, DF, Brazil and Programa de Pós-Graduação em Patologia Molecular, Faculdade de Medicina, Universidade de Brasília, 70910-900 Brasília, DF, Brazil
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23
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Gao LB, Sun XZ, Li L, Li JZ. Preparation, structure and electrochemistry of heterometallic Ru(II) and Fe(II) complexes. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.12.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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24
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Karaoun N, Renfrew AK. A luminescent ruthenium(II) complex for light-triggered drug release and live cell imaging. Chem Commun (Camb) 2016; 51:14038-41. [PMID: 26248575 DOI: 10.1039/c5cc05172j] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We report a novel ruthenium(II) complex for selective release of the imidazole-based drug econazole. While the complex is highly stable and luminescent in the dark, irradiation with green light induces release of one of the econazole ligands, which is accompanied by a turn-off luminescence response and up to a 34-fold increase in cytotoxicity towards tumour cells.
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Affiliation(s)
- Nora Karaoun
- School of Chemistry, University of Sydney, Sydney, Australia.
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25
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Yang L, He C, Liu X, Zhang J, Sun H, Guo H. Supramolecular Photoinduced Electron Transfer between a Redox-Active Hexanuclear Metal-Organic Cylinder and an Encapsulated Ruthenium(II) Complex. Chemistry 2016; 22:5253-60. [DOI: 10.1002/chem.201504975] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Indexed: 01/30/2023]
Affiliation(s)
- Lu Yang
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 P. R. China), Fax
| | - Cheng He
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 P. R. China), Fax
| | - Xin Liu
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 P. R. China), Fax
| | - Jing Zhang
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 P. R. China), Fax
| | - Hui Sun
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 P. R. China), Fax
| | - Huimin Guo
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116023 P. R. China), Fax
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26
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Ma L, Ma R, Wang Z, Yiu SM, Zhu G. Heterodinuclear Pt(iv)–Ru(ii) anticancer prodrugs to combat both drug resistance and tumor metastasis. Chem Commun (Camb) 2016; 52:10735-8. [DOI: 10.1039/c6cc04354b] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Putting spear and shield together: heterodinuclear Pt(iv)–Ru(ii) complexes effectively and quickly kill cisplatin-resistant cancer cells and impede cancer cell migration.
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Affiliation(s)
- Lili Ma
- Department of Biology and Chemistry
- City University of Hong Kong
- China
| | - Rong Ma
- Department of Biology and Chemistry
- City University of Hong Kong
- China
| | - Zhigang Wang
- Department of Biology and Chemistry
- City University of Hong Kong
- China
| | - Shek-Man Yiu
- Department of Biology and Chemistry
- City University of Hong Kong
- China
| | - Guangyu Zhu
- Department of Biology and Chemistry
- City University of Hong Kong
- China
- City University of Hong Kong Shenzhen Research Institute
- Shenzhen
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27
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Liu E, Zhang YZ, Tan J, Yang C, Li L, Golen JA, Rheingold AL, Zhang G. Zn(II) and Co(III) metallosupramolecular assemblies derived from a rigid bis-Schiff base ligand. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.07.074] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Heffern MC, Reichova V, Coomes JL, Harney AS, Bajema EA, Meade TJ. Tuning cobalt(III) Schiff base complexes as activated protein inhibitors. Inorg Chem 2015; 54:9066-74. [PMID: 26331337 PMCID: PMC4638226 DOI: 10.1021/acs.inorgchem.5b01415] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Cobalt(III) Schiff base complexes ([Co(acacen)(L)2](+), where L = NH3) inhibit histidine-containing proteins through dissociative exchange of the labile axial ligands (L). This work investigates axial ligand exchange dynamics of [Co(acacen)(L)2](+) complexes toward the development of protein inhibitors that are activated by external triggers such as light irradiation. We sought to investigate ligand exchange dynamics to design a Co(III) complex that is substitutionally inert under normal physiological conditions for selective activation. Fluorescent imidazoles (C3Im) were prepared as axial ligands in [Co(acacen)(L)2](+) to produce complexes (CoC3Im) that could report on ligand exchange and, thus, complex stability. These fluorescent imidazole reporters guided the design of a new dinuclear Co(III) Schiff base complex containing bridging diimidazole ligands, which exhibits enhanced stability to ligand exchange with competing imidazoles and to hydrolysis within a biologically relevant pH range. These studies inform the design of biocompatible Co(III) Schiff base complexes that can be selectively activated for protein inhibition with spatial and temporal specificity.
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Affiliation(s)
| | | | - Joseph L. Coomes
- Departments of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Allison S. Harney
- Departments of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Elizabeth A. Bajema
- Departments of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Thomas J. Meade
- Departments of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113, United States
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29
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Renfrew AK, Bryce NS, Hambley T. Cobalt(III) Chaperone Complexes of Curcumin: Photoreduction, Cellular Accumulation and Light-Selective Toxicity towards Tumour Cells. Chemistry 2015; 21:15224-34. [DOI: 10.1002/chem.201502702] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Indexed: 11/09/2022]
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