151
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Liu S, Lu D, Wang X, Ding D, Kong D, Wang Z, Zhao Y. Topology dictates function: controlled ROS production and mitochondria accumulation via curved carbon materials. J Mater Chem B 2017; 5:4918-4925. [DOI: 10.1039/c7tb00954b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Curvature-induced dipole moment can induce ROS production and mitochondrial accumulation.
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Affiliation(s)
- Sihui Liu
- School of Pharmaceutical Science & Technology
- Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin University
- Tianjin 300072
- China
| | - Di Lu
- School of Pharmaceutical Science & Technology
- Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin University
- Tianjin 300072
- China
| | - Xinchang Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen 361005
- China
| | - Dan Ding
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education
- College of Life Science
- Nankai University
| | - Deling Kong
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Bioactive Materials
- Ministry of Education
- College of Life Science
- Nankai University
| | - Zheng Wang
- School of Pharmaceutical Science & Technology
- Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin University
- Tianjin 300072
- China
| | - Yanjun Zhao
- School of Pharmaceutical Science & Technology
- Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin University
- Tianjin 300072
- China
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152
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Wu J, Xing Y, Wang H, Liu H, Yang M, Yuan J. Design of a β-diketonate–Eu3+ complex-based time-gated luminescence probe for visualizing mitochondrial singlet oxygen. NEW J CHEM 2017. [DOI: 10.1039/c7nj03696e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A β-diketonate–Eu3+ complex-based time-gated luminescence probe was developed for highly sensitive monitoring of mitochondrial singlet oxygen during the photodynamic therapy process.
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Affiliation(s)
- Jing Wu
- School of Chemistry and Chemical Engineering
- Liaoning Normal University
- Dalian 116029
- China
| | - Yue Xing
- School of Chemistry and Chemical Engineering
- Liaoning Normal University
- Dalian 116029
- China
| | - Huan Wang
- School of Chemistry and Chemical Engineering
- Liaoning Normal University
- Dalian 116029
- China
| | - Hongjing Liu
- School of Chemistry and Chemical Engineering
- Liaoning Normal University
- Dalian 116029
- China
| | - Mei Yang
- School of Chemistry and Chemical Engineering
- Liaoning Normal University
- Dalian 116029
- China
| | - Jingli Yuan
- State Key Laboratory of Fine Chemicals
- School of Chemistry
- Dalian University of Technology
- Dalian 116024
- China
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153
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Near-infrared uncaging or photosensitizing dictated by oxygen tension. Nat Commun 2016; 7:13378. [PMID: 27853134 PMCID: PMC5476797 DOI: 10.1038/ncomms13378] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 09/19/2016] [Indexed: 12/26/2022] Open
Abstract
Existing strategies that use tissue-penetrant near-infrared light for the targeted treatment of cancer typically rely on the local generation of reactive oxygen species. This approach can be impeded by hypoxia, which frequently occurs in tumour microenvironments. Here we demonstrate that axially unsymmetrical silicon phthalocyanines uncage small molecules preferentially in a low-oxygen environment, while efficiently generating reactive oxygen species in normoxic conditions. Mechanistic studies of the uncaging reaction implicate a photoredox pathway involving photoinduced electron transfer to generate a key radical anion intermediate. Cellular studies demonstrate that the biological mechanism of action is O2-dependent, with reactive oxygen species-mediated phototoxicity in normoxic conditions and small molecule uncaging in hypoxia. These studies provide a near-infrared light-targeted treatment strategy with the potential to address the complex tumour landscape through two distinct mechanisms that vary in response to the local O2 environment.
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154
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Garcia-Diaz M, Huang YY, Hamblin MR. Use of fluorescent probes for ROS to tease apart Type I and Type II photochemical pathways in photodynamic therapy. Methods 2016; 109:158-166. [PMID: 27374076 PMCID: PMC5075498 DOI: 10.1016/j.ymeth.2016.06.025] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 06/27/2016] [Accepted: 06/29/2016] [Indexed: 12/20/2022] Open
Abstract
Photodynamic therapy involves the excitation of a non-toxic dye by harmless visible light to produce a long-lived triplet state that can interact with molecular oxygen to produce reactive oxygen species (ROS), which can damage biomolecules and kill cells. ROS produced by electron transfer (Type 1) include superoxide, hydrogen peroxide and hydroxyl radical (HO), while singlet oxygen (1O2) is produced by energy transfer. Diverse methods exist to distinguish between these two pathways, some of which are more specific or more sensitive than others. In this review we cover the use of two fluorescence probes: singlet oxygen sensor green (SOSG) detects 1O2; and 4-hydroxyphenyl-fluorescein (HPF) that detects HO. Interesting data was collected concerning the photochemical pathways of functionalized fullerenes compared to tetrapyrroles, stable synthetic bacteriochlorins with and without central metals, phenothiazinium dyes interacting with inorganic salts such as azide.
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Affiliation(s)
- Maria Garcia-Diaz
- Department of Pharmacy, University of Copenhagen, Universitetsparken, 2, DK-2100, Copenhagen, Denmark
| | - Ying-Ying Huang
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA; Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA.
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155
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Westberg M, Bregnhøj M, Banerjee C, Blázquez-Castro A, Breitenbach T, Ogilby PR. Exerting better control and specificity with singlet oxygen experiments in live mammalian cells. Methods 2016; 109:81-91. [DOI: 10.1016/j.ymeth.2016.07.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 07/01/2016] [Accepted: 07/03/2016] [Indexed: 12/25/2022] Open
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156
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Nakajima H, Terazawa S, Niwano T, Yamamoto Y, Imokawa G. The Inhibitory Effects of Anti-Oxidants on Ultraviolet-Induced Up-Regulation of the Wrinkling-Inducing Enzyme Neutral Endopeptidase in Human Fibroblasts. PLoS One 2016; 11:e0161580. [PMID: 27648570 PMCID: PMC5029912 DOI: 10.1371/journal.pone.0161580] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 08/08/2016] [Indexed: 01/14/2023] Open
Abstract
We recently reported that the over-expression of skin fibroblast-derived neutral endopeptidase (NEP) plays a pivotal role in impairing the three-dimensional architecture of dermal elastic fibers during the biological mechanism of ultraviolet (UV)-induced skin wrinkling. In that process, a UVB-associated epithelial-mesenchymal cytokine interaction as well as a direct UVA-induced cellular stimulation are associated with the up-regulation of NEP in human fibroblasts. In this study, we characterized the mode of action of ubiquinol10 which may abrogate the up-regulation of NEP by dermal fibroblasts, resulting in a reported in vivo anti-wrinkling action, and compared that with 3 other anti-oxidants, astaxanthin (AX), riboflavin (RF) and flavin mononucleotide (FMN). Post-irradiation treatment with all 4 of those anti-oxidants elicited an interrupting effect on the UVB-associated epithelial-mesenchymal cytokine interaction leading to the up-regulation of NEP in human fibroblasts but with different modes of action. While AX mainly served as an inhibitor of the secretion of wrinkle-inducing cytokines, such as interleukin-1α (IL-1α) and granulocyte macrophage colony stimulatory factor (GM-CSF) in UVB-exposed epidermal keratinocytes, ubiquinol10, RF and FMN predominantly interrupted the IL-1α and GM-CSF-stimulated expression of NEP in dermal fibroblasts. On the other hand, as for the UVA-associated mechanism, similar to the abrogating effects reported for AX and FMN, ubiquinol10 but not RF had the potential to abrogate the increased expression of NEP and matrix-metalloproteinase-1 in UVA-exposed human fibroblasts. Our findings strongly support the in vivo anti-wrinkling effects of ubiquinol10 and AX on human and animal skin and provide convincing proof of the UV-induced wrinkling mechanism that essentially focuses on the over-expression of NEP by dermal fibroblasts as an intrinsic causative factor.
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Affiliation(s)
- Hiroaki Nakajima
- Toyo Beauty Co. Ltd., R&D Division, Osaka, Japan
- School of Bioscience and Biotechnology, Tokyo University of Technology, Tokyo, Japan
| | - Shuko Terazawa
- Research Institute for Biological Functions, Chubu University, Aichi, Japan
| | - Takao Niwano
- School of Bioscience and Biotechnology, Tokyo University of Technology, Tokyo, Japan
| | - Yorihiro Yamamoto
- School of Bioscience and Biotechnology, Tokyo University of Technology, Tokyo, Japan
| | - Genji Imokawa
- Research Institute for Biological Functions, Chubu University, Aichi, Japan
- * E-mail:
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157
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Klaper M, Fudickar W, Linker T. Role of Distance in Singlet Oxygen Applications: A Model System. J Am Chem Soc 2016; 138:7024-9. [DOI: 10.1021/jacs.6b01555] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Matthias Klaper
- Department
of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Golm, Germany
| | - Werner Fudickar
- Department
of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Golm, Germany
| | - Torsten Linker
- Department
of Chemistry, University of Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Golm, Germany
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158
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Awad MM, Tovmasyan A, Craik JD, Batinic-Haberle I, Benov LT. Important cellular targets for antimicrobial photodynamic therapy. Appl Microbiol Biotechnol 2016; 100:7679-88. [DOI: 10.1007/s00253-016-7632-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/08/2016] [Accepted: 05/10/2016] [Indexed: 12/17/2022]
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159
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Amino acid derivatives of pyropheophorbide-a ethers as photosensitizer: Synthesis and photodynamic activity. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.03.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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160
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Westberg M, Bregnhøj M, Blázquez-Castro A, Breitenbach T, Etzerodt M, Ogilby PR. Control of singlet oxygen production in experiments performed on single mammalian cells. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.01.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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161
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Jia Z, Miao J, Lu H, Habibi D, Zhang W, Zhang L. Photocatalytic degradation and absorption kinetics of cibacron brilliant yellow 3G-P by nanosized ZnO catalyst under simulated solar light. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.10.012] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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162
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Thomas M, Craik JD, Tovmasyan A, Batinic-Haberle I, Benov LT. Amphiphilic cationic Zn-porphyrins with high photodynamic antimicrobial activity. Future Microbiol 2016; 10:709-24. [PMID: 26000647 DOI: 10.2217/fmb.14.148] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
AIM Photodynamic inactivation of microbes can efficiently eradicate antibiotic-resistant strains. Systematic structural modification was used to investigate how porphyrin-based photosensitizers (PSs) could be designed for improved antibacterial activity. MATERIALS & METHODS Zinc(II)5,10,15,20-tetrakis(N-alkylpyridinium-2(3,4)-yl)porphyrins presenting systematic modifications at the periphery of the porphyrin ring were evaluated for toxicity and antimicrobial photodynamic activity by measuring metabolic activity, cell membrane integrity and viability using antibiotic-sensitive and resistant Escherichia coli strains as model Gram-negative targets. RESULTS Maximal sensitizer uptake, and, upon illumination, decrease of viable bacteria by >6 log10 were achieved by positively charged amphiphilic PSs with longer (six to eight carbon) alkyl substituents. CONCLUSION Antibacterial photoefficiency (throughout the text photoefficiency has been used as equivalent of photocytotoxic efficacy) can be increased by orders of magnitude by increasing the lipophilicity of cationic alkylmetalloporphyrin PSs.
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Affiliation(s)
- Milini Thomas
- 1Department of Biochemistry, Faculty of Medicine, Kuwait University, PO Box 24923, Safat 13110, Kuwait
| | - James D Craik
- 1Department of Biochemistry, Faculty of Medicine, Kuwait University, PO Box 24923, Safat 13110, Kuwait
| | - Artak Tovmasyan
- 2Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27710, USA
| | - Ines Batinic-Haberle
- 2Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27710, USA
| | - Ludmil T Benov
- 1Department of Biochemistry, Faculty of Medicine, Kuwait University, PO Box 24923, Safat 13110, Kuwait
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163
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Zhang GY, Deng SY, Zhang XJ, Shan D. Cathodic electrochemiluminescence of singlet oxygen induced by the electroactive zinc porphyrin in aqueous media. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.228] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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164
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Hu Y, Kanka J, Liu K, Yang Y, Wang H, Du H. Gold nanoring-enhanced generation of singlet oxygen: an intricate correlation with surface plasmon resonance and polyelectrolyte bilayers. RSC Adv 2016. [DOI: 10.1039/c6ra22814c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Gold nanoring (Au NR)-induced singlet oxygen (1O2) follows a different correlation with the separation distance between Au NR and photosensitizer (PS) compared to that of PS fluorescence enhancement.
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Affiliation(s)
- Yue Hu
- Department of Chemical Engineering and Materials Science
- Stevens Institute of Technology
- Hoboken
- USA
| | - Jiri Kanka
- Institute of Photonics and Electronics
- Academy of Science of the Czech Republic
- Chabersha 57
- Czech Republic
| | - Kai Liu
- Department of Chemical Engineering and Materials Science
- Stevens Institute of Technology
- Hoboken
- USA
| | - Yamin Yang
- Department of Biomedical Engineering
- Chemistry and Biological Sciences
- Stevens Institute of Technology
- Hoboken
- USA
| | - Hongjun Wang
- Department of Biomedical Engineering
- Chemistry and Biological Sciences
- Stevens Institute of Technology
- Hoboken
- USA
| | - Henry Du
- Department of Chemical Engineering and Materials Science
- Stevens Institute of Technology
- Hoboken
- USA
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165
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Hwang GB, Noimark S, Page K, Sehmi S, Macrobert AJ, Allan E, Parkin IP. White light-activated antimicrobial surfaces: effect of nanoparticles type on activity. J Mater Chem B 2016; 4:2199-2207. [DOI: 10.1039/c6tb00189k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Toluidine blue O (TBO) dye together with either silver (Ag) nanoparticles (NPs), gold (Au) NPs, or a mixture of Ag and Au NPs (Mix Ag–Au NPs) were incorporated into polyurethane to make antimicrobial surfaces using a swell-encapsulation-shrink process.
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Affiliation(s)
- Gi Byoung Hwang
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
| | - Sacha Noimark
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
| | - Kristopher Page
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
| | - Sandeep Sehmi
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
| | - Alexander J. Macrobert
- National Medical Laser Centre
- UCL Division of Surgery and Interventional Science
- Royal Free Campus
- London
- UK
| | - Elaine Allan
- Division of Microbial Diseases
- UCL Eastman Dental Institute
- University College London
- London WC1X 8LD
- UK
| | - Ivan P. Parkin
- Materials Chemistry Research Centre
- Department of Chemistry
- University College London
- London
- UK
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166
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You Y, Cho EJ, Kwon H, Hwang J, Lee SE. A singlet oxygen photosensitizer enables photoluminescent monitoring of singlet oxygen doses. Chem Commun (Camb) 2016; 52:780-3. [DOI: 10.1039/c5cc08411c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Dichromophoric molecular dyad enables photosensitization and detection of sinlget oxygen.
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Affiliation(s)
- Youngmin You
- Division of Chemical Engineering and Materials Science
- Ewha Womans University
- Seoul 120-750
- Korea
| | - Eun Jin Cho
- Department of Advanced Materials Engineering for Information and Electronics
- Kyung Hee University
- Gyeonggi-do 446-710
- Korea
| | - Hyeokseon Kwon
- Division of Chemical Engineering and Materials Science
- Ewha Womans University
- Seoul 120-750
- Korea
| | - Jieun Hwang
- Division of Chemical Engineering and Materials Science
- Ewha Womans University
- Seoul 120-750
- Korea
| | - Seung Eun Lee
- Division of Chemical Engineering and Materials Science
- Ewha Womans University
- Seoul 120-750
- Korea
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167
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Bregnhøj M, Westberg M, Jensen F, Ogilby PR. Solvent-dependent singlet oxygen lifetimes: temperature effects implicate tunneling and charge-transfer interactions. Phys Chem Chem Phys 2016; 18:22946-61. [DOI: 10.1039/c6cp01635a] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new model for an old problem: a barrier to account for temperature effects on singlet oxygen lifetimes.
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Affiliation(s)
| | | | - Frank Jensen
- Chemistry Department
- Aarhus University
- Aarhus
- Denmark
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168
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Neutrophil Leukocyte: Combustive Microbicidal Action and Chemiluminescence. J Immunol Res 2015; 2015:794072. [PMID: 26783542 PMCID: PMC4691466 DOI: 10.1155/2015/794072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Accepted: 11/18/2015] [Indexed: 01/20/2023] Open
Abstract
Neutrophil leukocytes protect against a varied and complex array of microbes by providing microbicidal action that is simple, potent, and focused. Neutrophils provide such action via redox reactions that change the frontier orbitals of oxygen (O2) facilitating combustion. The spin conservation rules define the symmetry barrier that prevents direct reaction of diradical O2 with nonradical molecules, explaining why combustion is not spontaneous. In burning, the spin barrier is overcome when energy causes homolytic bond cleavage producing radicals capable of reacting with diradical O2 to yield oxygenated radical products that further participate in reactive propagation. Neutrophil mediated combustion is by a different pathway. Changing the spin quantum state of O2 removes the symmetry restriction to reaction. Electronically excited singlet molecular oxygen (1O2*) is a potent electrophilic reactant with a finite lifetime that restricts its radius of reactivity and focuses combustive action on the target microbe. The resulting exergonic dioxygenation reactions produce electronically excited carbonyls that relax by light emission, that is, chemiluminescence. This overview of neutrophil combustive microbicidal action takes the perspectives of spin conservation and bosonic-fermionic frontier orbital considerations. The necessary principles of particle physics and quantum mechanics are developed and integrated into a fundamental explanation of neutrophil microbicidal metabolism.
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169
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Bacellar IOL, Tsubone TM, Pavani C, Baptista MS. Photodynamic Efficiency: From Molecular Photochemistry to Cell Death. Int J Mol Sci 2015; 16:20523-59. [PMID: 26334268 PMCID: PMC4613217 DOI: 10.3390/ijms160920523] [Citation(s) in RCA: 243] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 08/18/2015] [Accepted: 08/24/2015] [Indexed: 12/11/2022] Open
Abstract
Photodynamic therapy (PDT) is a clinical modality used to treat cancer and infectious diseases. The main agent is the photosensitizer (PS), which is excited by light and converted to a triplet excited state. This latter species leads to the formation of singlet oxygen and radicals that oxidize biomolecules. The main motivation for this review is to suggest alternatives for achieving high-efficiency PDT protocols, by taking advantage of knowledge on the chemical and biological processes taking place during and after photosensitization. We defend that in order to obtain specific mechanisms of cell death and maximize PDT efficiency, PSes should oxidize specific molecular targets. We consider the role of subcellular localization, how PS photochemistry and photophysics can change according to its nanoenvironment, and how can all these trigger specific cell death mechanisms. We propose that in order to develop PSes that will cause a breakthrough enhancement in the efficiency of PDT, researchers should first consider tissue and intracellular localization, instead of trying to maximize singlet oxygen quantum yields in in vitro tests. In addition to this, we also indicate many open questions and challenges remaining in this field, hoping to encourage future research.
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Affiliation(s)
- Isabel O L Bacellar
- Instituto de Química, Universidade de São Paulo, São Paulo 05508-900, Brazil.
| | - Tayana M Tsubone
- Instituto de Química, Universidade de São Paulo, São Paulo 05508-900, Brazil.
| | - Christiane Pavani
- Programa de Pós Graduação em Biofotônica Aplicada às Ciências da Saúde, Universidade Nove de Julho, São Paulo 01504-001, Brazil.
| | - Mauricio S Baptista
- Instituto de Química, Universidade de São Paulo, São Paulo 05508-900, Brazil.
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170
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Katsuda Y, Niwano Y, Nakashima T, Mokudai T, Nakamura K, Oizumi S, Kanno T, Kanetaka H, Egusa H. Cytoprotective effects of grape seed extract on human gingival fibroblasts in relation to its antioxidant potential. PLoS One 2015; 10:e0134704. [PMID: 26258747 PMCID: PMC4530871 DOI: 10.1371/journal.pone.0134704] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 07/13/2015] [Indexed: 11/18/2022] Open
Abstract
Cytoprotective effects of short-term treatment with grape seed extract (GSE) upon human gingival fibroblasts (hGFs) were evaluated in relation to its antioxidant properties and compared with those of a water-soluble analog of vitamin E: trolox (Tx). GSE and Tx showed comparable antioxidant potential in vitro against di(phenyl)-(2,4,6-trinitrophenyl)iminoazanium (DPPH; a stable radical), hydroxyl radical (•OH), singlet oxygen (1O2), and hydrogen peroxide (H2O2). Pretreatment or concomitant treatment with GSE for 1 min protected hGFs from oxidative stressors, including H2O2, acid-electrolyzed water (AEW), and 1O2, and attenuated the intracellular formation of reactive oxygen species induced by H2O2 and AEW. Tx also reduced the H2O2- and AEW-induced intracellular formation of reactive oxygen species, but showed no cytoprotective effects on hGFs exposed to H2O2, AEW, or 1O2. These results suggest that the cytoprotective effects of GSE are likely exerted independently of its antioxidant potential.
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Affiliation(s)
- Yusuke Katsuda
- Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Yoshimi Niwano
- Tohoku University Graduate School of Dentistry, Sendai, Japan
- * E-mail:
| | - Takuji Nakashima
- Kiasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, Japan
| | | | | | - Satomi Oizumi
- Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Taro Kanno
- Tohoku University Graduate School of Dentistry, Sendai, Japan
| | | | - Hiroshi Egusa
- Tohoku University Graduate School of Dentistry, Sendai, Japan
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171
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Abstract
Radiative transitions between the three lowest-lying electronic states of molecular oxygen have long provided a model to study how collision-dependent perturbations influence forbidden processes. In an isolated oxygen molecule, transitions between the O2(X(3)Σg(-)), O2(a(1)Δg), and O2(b(1)Σg(+)) states are forbidden as electric-dipole processes. For oxygen dissolved in organic solvents, the probabilities of radiative transitions between these states increase appreciably. Attempts to interpret solvent-dependent changes in the radiative rate constants have principally relied on O2(b(1)Σg(+)) and O2(a(1)Δg) emission experiments. However, the dominant nonradiative deactivation channels of O2(b(1)Σg(+)) make it difficult to quantify solvent effects on the O2(b(1)Σg(+)) → O2(a(1)Δg) radiative process. Thus, an appreciable amount of important information has heretofore not been available. In the present study, we examined the effect of 17 common organic solvents on the O2(a(1)Δg) → O2(b(1)Σg(+)) absorption transition at ∼5200 cm(-1) (i.e., ∼1925 nm). The solvent-dependent absorption coefficients at the band maximum, εmax, range from 5 to 50 M(-1) cm(-1) and correlate reasonably well with the solvent refractive index; εmax is largest in solvents with the largest refractive index. This observation is consistent with a model in which oxygen is perturbed to a greater extent by solvents with a large electronic polarizability. Through the Strickler-Berg equation, we also used these absorption data to obtain the radiative rate constant for the O2(b(1)Σg(+)) → O2(a(1)Δg) transition, and the results are consistent with a model in which the O2(a(1)Δg) → O2(X(3)Σg(-)) transition is said to steal intensity from the O2(b(1)Σg(+)) → O2(a(1)Δg) transition.
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172
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Sheng H, Nakamura K, Kanno T, Sasaki K, Niwano Y. Bactericidal Effect of Photolysis of H2O2 in Combination with Sonolysis of Water via Hydroxyl Radical Generation. PLoS One 2015; 10:e0132445. [PMID: 26148024 PMCID: PMC4493093 DOI: 10.1371/journal.pone.0132445] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 06/15/2015] [Indexed: 11/21/2022] Open
Abstract
The bactericidal effect of hydroxyl radical (·OH) generated by combination of photolysis of hydrogen peroxide (H2O2) and sonolysis of water was examined under the condition in which the yield of ·OH increased additively when H2O2 aqueous solution was concomitantly irradiated with laser and ultrasound. The suspension of Staphylococcus aureus mixed with the different concentrations of H2O2 was irradiated simultaneously with a laser light (wavelength: 405 nm, irradiance: 46 and 91 mW/cm2) and ultrasound (power: 30 w, frequency: 1.65 MHz) at 20 ± 1°C of the water bulk temperature for 2 min. The combination of laser and ultrasound irradiation significantly reduced the viable bacterial count in comparison with the laser irradiation of H2O2 alone. By contrast, the ultrasound irradiation alone exerted almost no bactericidal effect. These results suggested that the combination effect of photolysis of H2O2 and sonolysis of water on bactericidal activity was synergistic. A multi-way analysis of variance also revealed that the interaction of H2O2 concentration, laser power and ultrasound irradiation significantly affected the bactericidal activity. Since the result of oxidative DNA damage evaluation demonstrated that the combination of laser and ultrasound irradiation significantly induced oxidative damage of bacterial DNA in comparison with the laser irradiation of H2O2 alone, it was suggested that the combination effect of photolysis of H2O2 and sonolysis of water on bactericidal activity would be exerted via oxidative damage of cellular components such as DNA.
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Affiliation(s)
- Hong Sheng
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan
- * E-mail:
| | - Keisuke Nakamura
- Laboratory for Redox Regulation, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan
| | - Taro Kanno
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan
| | - Keiichi Sasaki
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan
| | - Yoshimi Niwano
- Laboratory for Redox Regulation, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan
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173
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Tagashira H, Miyamoto A, Kitamura SI, Tsubata M, Yamaguchi K, Takagaki K, Imokawa G. UVB Stimulates the Expression of Endothelin B Receptor in Human Melanocytes via a Sequential Activation of the p38/MSK1/CREB/MITF Pathway Which Can Be Interrupted by a French Maritime Pine Bark Extract through a Direct Inactivation of MSK1. PLoS One 2015; 10:e0128678. [PMID: 26030901 PMCID: PMC4452497 DOI: 10.1371/journal.pone.0128678] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 04/29/2015] [Indexed: 01/01/2023] Open
Abstract
Melanogenesis is the physiological process by which melanin is synthesized to protect the skin from UV damage. While paracrine interactions between keratinocytes and melanocytes are crucial for regulating epidermal pigmentation, the endothelin (EDN)-endothelin B-receptor (EDNRB) interaction is one of the key linkages. In this study, we found that a single exposure of normal human melanocytes (NHMs) with UVB stimulates the expression of EDNRB and its upstream transcription factor microphthalmia-associated transcription factor (MITF) at the transcriptional and translational levels. That stimulation can be abrogated by post-irradiation treatment with a French maritime pine bark extract (PBE). UVB stimulated the phosphorylation of p38 and c-jun N-terminal kinase (JNK), but not ERK, followed by the increased phosphorylation of MSK1 and CREB. The post-irradiation treatment with PBE did not affect the increased phosphorylation of p38 and JNK, but distinctly abrogated the phosphorylation of MSK1 and CREB. Post-irradiation treatment with the MSK1 inhibitor H89 significantly down-regulated the increased gene expression of MITF and EDNRB in UVB-exposed NHMs. Our findings indicate for the first time that the increased expression of MITF that leads to the up-regulation of melanocyte-specific proteins in UVB-exposed NHMs is mediated via activation of the p38/MSK1/CREB pathway but not the ERK/RSK/CREB pathway. The mode of action by PBE demonstrates that interrupting MSK1 activation is a new target for antioxidants including PBE which can serve as anti-pigmenting agents in a reactive oxygen species-depletion-independent manner.
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Affiliation(s)
- Hideki Tagashira
- Research and Development Division, Toyo Shinyaku Co., Ltd., 7–28 Yayoigaoka, Tosu, Saga, 841–0005, Japan
| | - Aki Miyamoto
- Research and Development Division, Toyo Shinyaku Co., Ltd., 7–28 Yayoigaoka, Tosu, Saga, 841–0005, Japan
| | - Sei-ichi Kitamura
- Research and Development Division, Toyo Shinyaku Co., Ltd., 7–28 Yayoigaoka, Tosu, Saga, 841–0005, Japan
| | - Masahito Tsubata
- Research and Development Division, Toyo Shinyaku Co., Ltd., 7–28 Yayoigaoka, Tosu, Saga, 841–0005, Japan
| | - Kazuya Yamaguchi
- Research and Development Division, Toyo Shinyaku Co., Ltd., 7–28 Yayoigaoka, Tosu, Saga, 841–0005, Japan
| | - Kinya Takagaki
- Research and Development Division, Toyo Shinyaku Co., Ltd., 7–28 Yayoigaoka, Tosu, Saga, 841–0005, Japan
| | - Genji Imokawa
- Research Institute for Biological Functions, Chubu University, 1200 Matsumoto, Kasugai, Aichi, 487–8501, Japan
- * E-mail:
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174
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Macia N, Heyne B. Using photochemistry to understand and control the production of reactive oxygen species in biological environments. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2015.03.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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175
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Weijer R, Broekgaarden M, Kos M, van Vught R, Rauws EA, Breukink E, van Gulik TM, Storm G, Heger M. Enhancing photodynamic therapy of refractory solid cancers: Combining second-generation photosensitizers with multi-targeted liposomal delivery. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2015. [DOI: 10.1016/j.jphotochemrev.2015.05.002] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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176
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Moor KJ, Valle DC, Li C, Kim JH. Improving the Visible Light Photoactivity of Supported Fullerene Photocatalysts through the Use of [C₇₀] Fullerene. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:6190-7. [PMID: 25950200 DOI: 10.1021/es505888d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We herein present the first instance of employing [C₇₀] fullerene for photocatalytic ¹O₂ production in water, through covalent immobilization onto a mesoporous silica support via nucelophilic amine addition directly to fullerene's cage. This attachment approach prevents the aggregation of individual fullerene molecules in water, thus allowing fullerene to retain its photoactivity, yet is much less complex than other techniques commonly pursued to create such supported-fullerene materials, which typically rely on water-soluble fullerene derivatives and elaborate immobilization methods. The solid-supported C₇₀ material exhibits significantly improved aqueous visible-light photoactivity compared to previous C₆₀- and C₆₀-derivative-based supported fullerene materials. Further, this material rapidly inactivates MS2 bacteriophage under sunlight illumination, oxidizes various organic contaminants, and does not appear to be significantly fouled by natural organic matter (NOM), highlighting the potential of these materials in real-world applications. Collectively, the ease of preparation and significantly enhanced visible-light photoactivity of these materials advance fullerene-based technologies for water treatment.
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177
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Bregnhøj M, Blázquez-Castro A, Westberg M, Breitenbach T, Ogilby PR. Direct 765 nm Optical Excitation of Molecular Oxygen in Solution and in Single Mammalian Cells. J Phys Chem B 2015; 119:5422-9. [DOI: 10.1021/acs.jpcb.5b01727] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Mikkel Bregnhøj
- Center
for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, Langelandsgade 140, Aarhus 8000, Denmark
| | - Alfonso Blázquez-Castro
- Center
for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, Langelandsgade 140, Aarhus 8000, Denmark
- Aarhus
Institute of Advanced Studies, Aarhus University, Høegh-Guldbergs Gade 6B, Aarhus 8000, Denmark
| | - Michael Westberg
- Center
for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, Langelandsgade 140, Aarhus 8000, Denmark
| | - Thomas Breitenbach
- Center
for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, Langelandsgade 140, Aarhus 8000, Denmark
| | - Peter R. Ogilby
- Center
for Oxygen Microscopy and Imaging, Department of Chemistry, Aarhus University, Langelandsgade 140, Aarhus 8000, Denmark
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178
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Kıyak B, Esenpınar AA, Bulut M. Synthesis, characterization, photophysical and photochemical properties of zinc and indium phthalocyanines bearing a vanillylacetone moiety known as an anticarcinogenic agent. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.01.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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179
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Yu H, Liu X, Wu Q, Li Q, Wang S, Guo Y. A New Rhodamine-based Fluorescent Probe for the Detection of Singlet Oxygen. CHEM LETT 2015. [DOI: 10.1246/cl.141013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hui Yu
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences
- University of Chinese Academy of Sciences
| | - Xi Liu
- Institute of Modern Physics, Chinese Academy of Sciences
- University of Chinese Academy of Sciences
| | - Qingfeng Wu
- Institute of Modern Physics, Chinese Academy of Sciences
| | - Qiang Li
- Institute of Modern Physics, Chinese Academy of Sciences
| | - Shuai Wang
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences
| | - Yong Guo
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences
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180
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Kawano A, Hayakawa A, Kojima S, Tsukimoto M, Sakamoto H. Purinergic signaling mediates oxidative stress in UVA-exposed THP-1 cells. Toxicol Rep 2015; 2:391-400. [PMID: 28962373 PMCID: PMC5598242 DOI: 10.1016/j.toxrep.2015.01.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 01/26/2015] [Indexed: 01/16/2023] Open
Abstract
Ultraviolet A (UVA) radiation, the major UV component of solar radiation, can penetrate easily to the dermis, where it causes significant damage to cellular components by inducing formation of reactive oxygen species (ROS). On the other hand, extracellular ATP is released in response to various stimuli, and activates purinergic P2X7 receptor, triggering ROS production and cell death. Here, we examined the hypothesis that ATP release followed by activation of P2X7 receptor plays a role in UVA-induced oxidative cell damage, using human acute monocytic leukemia cell line THP-1. Indeed, UVA irradiation of THP-1 cells induced ATP release and activation of P2X7 receptor. Irradiated cells showed a rapid increase of both p67phox in membrane fraction and intracellular ROS. Pretreatment with ecto-nucleotidase or P2X7 receptor antagonist blocked the UVA-initiated membrane translocation of p67phox and ROS production. Furthermore, pretreatment with antioxidant or P2X7 receptor antagonist efficiently protected UVA-irradiated cells from caspase-dependent cell death. These findings show that autocrine signaling through release of ATP and activation of P2X7 receptor is required for UVA-induced stimulation of oxidative stress in monocytes.
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Affiliation(s)
- Ayumi Kawano
- Radioisotope Research Laboratory, School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, Japan
| | - Akimitsu Hayakawa
- Radioisotope Research Laboratory, School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, Japan
| | - Shuji Kojima
- Department of Radiation Biosciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, Japan
| | - Mitsutoshi Tsukimoto
- Department of Radiation Biosciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, Japan
| | - Hikaru Sakamoto
- Radioisotope Research Laboratory, School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, Japan
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181
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Westberg M, Holmegaard L, Pimenta FM, Etzerodt M, Ogilby PR. Rational design of an efficient, genetically encodable, protein-encased singlet oxygen photosensitizer. J Am Chem Soc 2015; 137:1632-42. [PMID: 25575190 DOI: 10.1021/ja511940j] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Singlet oxygen, O(2)(a(1)Δ(g)), plays a key role in many processes of cell signaling. Limitations in mechanistic studies of such processes are generally associated with the difficulty of controlling the amount and location of O(2)(a(1)Δ(g)) production in or on a cell. As such, there is great need for a system that (a) selectively produces O(2)(a(1)Δ(g)) in appreciable and accurately quantifiable yields and (b) can be localized in a specific place at the suborganelle level. A genetically encodable, protein-encased photosensitizer is one way to achieve this goal. Through a systematic and rational approach involving mutations to a LOV2 protein that binds the chromophore flavin mononucleotide (FMN), we have developed a promising photosensitizer that overcomes many of the problems that affect related systems currently in use. Specifically, by decreasing the extent of hydrogen bonding between FMN and a specific amino acid residue in the local protein environment, we decrease the susceptibility of FMN to undesired photoinitiated electron-transfer reactions that kinetically compete with O(2)(a(1)Δ(g)) production. As a consequence, our protein-encased FMN system produces O(2)(a(1)Δ(g)) with the uniquely large quantum efficiency of 0.25 ± 0.03. We have also quantified other key photophysical parameters that characterize this sensitizer system, including unprecedented H(2)O/D(2)O solvent isotope effects on the O(2)(a(1)Δ(g)) formation kinetics and yields. As such, our results facilitate future systematic developments in this field.
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Affiliation(s)
- Michael Westberg
- Center for Oxygen Microscopy and Imaging, Chemistry Department and ‡Department of Molecular Biology and Genetics, Aarhus University , DK-8000, Aarhus, Denmark
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182
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Takizawa SY, Breitenbach T, Westberg M, Holmegaard L, Gollmer A, Jensen RL, Murata S, Ogilby PR. Solvent dependent photosensitized singlet oxygen production from an Ir(iii) complex: pointing to problems in studies of singlet-oxygen-mediated cell death. Photochem Photobiol Sci 2015; 14:1831-43. [DOI: 10.1039/c5pp00230c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photophysics of an Ir(iii) complex with phenanthroline and phenylpyridine ligands depends appreciably on the local environment.
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Affiliation(s)
- Shin-ya Takizawa
- Department of Basic Science
- Graduate School of Arts and Sciences
- The University of Tokyo
- Tokyo
- Japan
| | - Thomas Breitenbach
- Center for Oxygen Microscopy and Imaging
- Department of Chemistry
- Aarhus University
- Aarhus
- 8000 Denmark
| | - Michael Westberg
- Center for Oxygen Microscopy and Imaging
- Department of Chemistry
- Aarhus University
- Aarhus
- 8000 Denmark
| | - Lotte Holmegaard
- Center for Oxygen Microscopy and Imaging
- Department of Chemistry
- Aarhus University
- Aarhus
- 8000 Denmark
| | - Anita Gollmer
- Center for Oxygen Microscopy and Imaging
- Department of Chemistry
- Aarhus University
- Aarhus
- 8000 Denmark
| | - Rasmus L. Jensen
- Center for Oxygen Microscopy and Imaging
- Department of Chemistry
- Aarhus University
- Aarhus
- 8000 Denmark
| | - Shigeru Murata
- Department of Basic Science
- Graduate School of Arts and Sciences
- The University of Tokyo
- Tokyo
- Japan
| | - Peter R. Ogilby
- Center for Oxygen Microscopy and Imaging
- Department of Chemistry
- Aarhus University
- Aarhus
- 8000 Denmark
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183
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Bovis MJ, Noimark S, Woodhams JH, Kay CWM, Weiner J, Peveler WJ, Correia A, Wilson M, Allan E, Parkin IP, MacRobert AJ. Photosensitisation studies of silicone polymer doped with methylene blue and nanogold for antimicrobial applications. RSC Adv 2015. [DOI: 10.1039/c5ra09045h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
2 nm gold nanoparticle (AuNP) and methylene blue (MB) incorporated into medical-grade silicone polymer for antimicrobial applications.
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184
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Laloi C, Havaux M. Key players of singlet oxygen-induced cell death in plants. FRONTIERS IN PLANT SCIENCE 2015; 6:39. [PMID: 25699067 PMCID: PMC4316694 DOI: 10.3389/fpls.2015.00039] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 01/15/2015] [Indexed: 05/03/2023]
Abstract
The production of reactive oxygen species (ROS) is an unavoidable consequence of oxygenic photosynthesis. Singlet oxygen ((1)O2) is a highly reactive species to which has been attributed a major destructive role during the execution of ROS-induced cell death in photosynthetic tissues exposed to excess light. The study of the specific biological activity of (1)O2 in plants has been hindered by its high reactivity and short lifetime, the concurrent production of other ROS under photooxidative stress, and limited in vivo detection methods. However, during the last 15 years, the isolation and characterization of two (1)O2-overproducing mutants in Arabidopsis thaliana, flu and ch1, has allowed the identification of genetically controlled (1)O2 cell death pathways and a (1)O2 acclimation pathway that are triggered at sub-cytotoxic concentrations of (1)O2. The study of flu has revealed the control of cell death by the plastid proteins EXECUTER (EX)1 and EX2. In ch1, oxidized derivatives of β-carotene, such as β-cyclocitral and dihydroactinidiolide, have been identified as important upstream messengers in the (1)O2 signaling pathway that leads to stress acclimation. In both the flu and ch1 mutants, phytohormones act as important promoters or inhibitors of cell death. In particular, jasmonate has emerged as a key player in the decision between acclimation and cell death in response to (1)O2. Although the flu and ch1 mutants show many similarities, especially regarding their gene expression profiles, key differences, such as EXECUTER-independent cell death in ch1, have also been observed and will need further investigation to be fully understood.
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Affiliation(s)
- Christophe Laloi
- Laboratoire de Génétique et Biophysique des Plantes, Institut de Biologie Environnementale et Biotechnologie, Commissariat à l’Énergie Atomique et aux Énergies AlternativesMarseille, France
- CNRS, UMR 7265 Biologie Végétale et Microbiologie EnvironnementalesMarseille, France
- Aix Marseille UniversitéMarseille, France
- *Correspondence: Christophe Laloi, Laboratoire de Génétique et Biophysique des Plantes, Institut de Biologie Environnementale et Biotechnologie, Commissariat à l’Énergie Atomique et aux nergies Alternatives, F -13009 Marseille, France e-mail: ; Michel Havaux, Laboratoire d’Ecophysiologie Moléculaire des Plantes, Institut de Biologie Environnementale et Biotechnologie, Commissariat à l’Énergie Atomique et aux Énergies Alternatives, F-13108 Saint-Paul-lez-Durance, France e-mail:
| | - Michel Havaux
- CNRS, UMR 7265 Biologie Végétale et Microbiologie EnvironnementalesMarseille, France
- Aix Marseille UniversitéMarseille, France
- Laboratoire d’Ecophysiologie Moléculaire des Plantes, Institut de Biologie Environnementale et Biotechnologie, Commissariat à l’Énergie Atomique et aux Énergies AlternativesSaint-Paul-lez-Durance, France
- *Correspondence: Christophe Laloi, Laboratoire de Génétique et Biophysique des Plantes, Institut de Biologie Environnementale et Biotechnologie, Commissariat à l’Énergie Atomique et aux nergies Alternatives, F -13009 Marseille, France e-mail: ; Michel Havaux, Laboratoire d’Ecophysiologie Moléculaire des Plantes, Institut de Biologie Environnementale et Biotechnologie, Commissariat à l’Énergie Atomique et aux Énergies Alternatives, F-13108 Saint-Paul-lez-Durance, France e-mail:
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185
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Pimenta FM, Jensen JK, Etzerodt M, Ogilby PR. Protein-encapsulated bilirubin: paving the way to a useful probe for singlet oxygen. Photochem Photobiol Sci 2015; 14:665-77. [DOI: 10.1039/c4pp00408f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Oxygen- and singlet-oxygen-dependent parameters that characterize the behavior of bilirubin encapsulated in a protein have been quantified.
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Affiliation(s)
- Frederico M. Pimenta
- Center for Oxygen Microscopy and Imaging
- Chemistry Department
- Aarhus University
- Aarhus
- Denmark
| | - Jan K. Jensen
- Department of Molecular Biology and Genetics
- Aarhus University
- Aarhus
- Denmark
| | - Michael Etzerodt
- Department of Molecular Biology and Genetics
- Aarhus University
- Aarhus
- Denmark
| | - Peter R. Ogilby
- Center for Oxygen Microscopy and Imaging
- Chemistry Department
- Aarhus University
- Aarhus
- Denmark
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186
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Benov L. Photodynamic therapy: current status and future directions. Med Princ Pract 2015; 24 Suppl 1:14-28. [PMID: 24820409 PMCID: PMC6489067 DOI: 10.1159/000362416] [Citation(s) in RCA: 252] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 03/24/2014] [Indexed: 12/19/2022] Open
Abstract
Photodynamic therapy (PDT) is a minimally invasive therapeutic modality used for the management of a variety of cancers and benign diseases. The destruction of unwanted cells and tissues in PDT is achieved by the use of visible or near-infrared radiation to activate a light-absorbing compound (a photosensitizer, PS), which, in the presence of molecular oxygen, leads to the production of singlet oxygen and other reactive oxygen species. These cytotoxic species damage and kill target cells. The development of new PSs with properties optimized for PDT applications is crucial for the improvement of the therapeutic outcome. This review outlines the principles of PDT and discusses the relationship between the structure and physicochemical properties of a PS, its cellular uptake and subcellular localization, and its effect on PDT outcome and efficacy.
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Affiliation(s)
- Ludmil Benov
- *Ludmil Benov, Department of Biochemistry, Faculty of Medicine, Kuwait University, PO Box 24923, Safat 13110 (Kuwait), E-Mail
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187
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Piette J. Signalling pathway activation by photodynamic therapy: NF-κB at the crossroad between oncology and immunology. Photochem Photobiol Sci 2015; 14:1510-7. [DOI: 10.1039/c4pp00465e] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The response of tumors to photodynamic therapy (PDT) largely depend on signaling pathways among which the pathway leading to NF-κB activation is of high importance.
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Affiliation(s)
- Jacques Piette
- Laboratory of Virology & Immunology
- GIGA-Signal Transduction
- GIGA B34
- University of Liège
- B-4000 Liège
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188
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Donohue E, Balgi AD, Komatsu M, Roberge M. Induction of Covalently Crosslinked p62 Oligomers with Reduced Binding to Polyubiquitinated Proteins by the Autophagy Inhibitor Verteporfin. PLoS One 2014; 9:e114964. [PMID: 25494214 PMCID: PMC4262463 DOI: 10.1371/journal.pone.0114964] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 11/17/2014] [Indexed: 01/10/2023] Open
Abstract
Autophagy is a cellular catabolic process responsible for the degradation of cytoplasmic constituents, including organelles and long-lived proteins, that helps maintain cellular homeostasis and protect against various cellular stresses. Verteporfin is a benzoporphyrin derivative used clinically in photodynamic therapy to treat macular degeneration. Verteporfin was recently found to inhibit autophagosome formation by an unknown mechanism that does not require exposure to light. We report that verteporfin directly targets and modifies p62, a scaffold and adaptor protein that binds both polyubiquitinated proteins destined for degradation and LC3 on autophagosomal membranes. Western blotting experiments revealed that exposure of cells or purified p62 to verteporfin causes the formation of covalently crosslinked p62 oligomers by a mechanism involving low-level singlet oxygen production. Rose bengal, a singlet oxygen producer structurally unrelated to verteporfin, also produced crosslinked p62 oligomers and inhibited autophagosome formation. Co-immunoprecipitation experiments demonstrated that crosslinked p62 oligomers retain their ability to bind to LC3 but show defective binding to polyubiquitinated proteins. Mutations in the p62 PB1 domain that abolish self-oligomerization also abolished crosslinked oligomer formation. Interestingly, small amounts of crosslinked p62 oligomers were detected in untreated cells, and other groups noted the accumulation of p62 forms with reduced SDS-PAGE mobility in cellular and animal models of oxidative stress and aging. These data indicate that p62 is particularly susceptible to oxidative crosslinking and lead us to propose a model whereby oxidized crosslinked p62 oligomers generated rapidly by drugs like verteporfin or over time during the aging process interfere with autophagy.
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Affiliation(s)
- Elizabeth Donohue
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Aruna D. Balgi
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Masaaki Komatsu
- Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Michel Roberge
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, Canada
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189
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Abstract
AbstractNon-equilibrium plasma makes it is possible to modify surface chemistry, synthetize polymer materials, and oxidize some organic compounds completely by generation of energetic and chemically active species in gas or liquid phases. Glow-discharge electrolysis plasma (GDEP) has been intensely studied for applications in chemistry and in material, environmental, and biomedical engineering during the last few years because of the very highly active chemical species produced during the glow-discharge electrolysis (GDE) process. A brief review is already available regarding applications of glow-discharge electrolysis plasma technique in chemistry and environmental science during the past decade. For convenience of discussion, some papers from prior years are also cited. The contents of this review are focused on the degradation of persistent pollutants, surface modification of materials, and preparation of functional polymers.
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190
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Synergistic interaction between wavelength of light and concentration of H₂O₂ in bactericidal activity of photolysis of H₂O₂. J Biosci Bioeng 2014; 119:358-62. [PMID: 25282638 DOI: 10.1016/j.jbiosc.2014.08.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 08/28/2014] [Accepted: 08/29/2014] [Indexed: 01/10/2023]
Abstract
The present study aimed to evaluate the interaction between wavelength of light in the range of ultra violet A-visible and concentration of H2O2 in the reaction of photolysis of H2O2 from the point of view of hydroxyl radical (·OH) generation and the bactericidal activity. Light emitting diodes (LEDs) emitting the light at wavelengths of 365, 385, 400 and 465 nm were used at an irradiance of 1000 mW/cm(2). H2O2 was used at the final concentrations of 0, 250, 500, and 1000 mM. Quantitative analysis of ·OH generated by the LED irradiation of H2O2 were performed using an electron spin resonance-spin trapping technique. In a bactericidal assay, a bacterial suspension of Staphylococcus aureus prepared in sterile physiological saline was irradiated with the LEDs. The bactericidal activity of each test condition was evaluated by viable counts. When H2O2 was irradiated with the LEDs, ·OH was generated and bacteria were killed dependently on the concentration of H2O2 and the wavelength of LED. The two-way analysis of variance revealed that the wavelength, the H2O2 concentration and their interaction significantly affected the yield of ·OH and the bactericidal activity of the photolysis of H2O2. Therefore, it is suggested that bactericidal activity of photolysis of H2O2 could be enhanced by controlling the wavelength and the concentration of H2O2, which may contributes to shortening the treatment time and/or to reducing the concentration of H2O2.
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191
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Odeh AM, Craik JD, Ezzeddine R, Tovmasyan A, Batinic-Haberle I, Benov LT. Targeting mitochondria by Zn(II)N-alkylpyridylporphyrins: the impact of compound sub-mitochondrial partition on cell respiration and overall photodynamic efficacy. PLoS One 2014; 9:e108238. [PMID: 25250732 PMCID: PMC4177117 DOI: 10.1371/journal.pone.0108238] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 08/19/2014] [Indexed: 01/12/2023] Open
Abstract
Mitochondria play a key role in aerobic ATP production and redox control. They harness crucial metabolic pathways and control cell death mechanisms, properties that make these organelles essential for survival of most eukaryotic cells. Cancer cells have altered cell death pathways and typically show a shift towards anaerobic glycolysis for energy production, factors which point to mitochondria as potential culprits in cancer development. Targeting mitochondria is an attractive approach to tumor control, but design of pharmaceutical agents based on rational approaches is still not well established. The aim of this study was to investigate which structural features of specially designed Zn(II)N-alkylpyridylporphyrins would direct them to mitochondria and to particular mitochondrial targets. Since Zn(II)N-alkylpyridylporphyrins can act as highly efficient photosensitizers, their localization can be confirmed by photodamage to particular mitochondrial components. Using cultured LS174T adenocarcinoma cells, we found that subcellular distribution of Zn-porphyrins is directed by the nature of the substituents attached to the meso pyridyl nitrogens at the porphyrin ring. Increasing the length of the aliphatic chain from one carbon (methyl) to six carbons (hexyl) increased mitochondrial uptake of the compounds. Such modifications also affected sub-mitochondrial distribution of the Zn-porphyrins. The amphiphilic hexyl derivative (ZnTnHex-2-PyP) localized in the vicinity of cytochrome c oxidase complex, causing its inactivation during illumination. Photoinactivation of critical cellular targets explains the superior efficiency of the hexyl derivative in causing mitochondrial photodamage, and suppressing cellular respiration and survival. Design of potent photosensitizers and redox-active scavengers of free radicals should take into consideration not only selective organelle uptake and localization, but also selective targeting of critical macromolecular structures.
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Affiliation(s)
- Ahmad M. Odeh
- Department of Biochemistry, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - James D. Craik
- Department of Biochemistry, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Rima Ezzeddine
- Department of Biochemistry, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Artak Tovmasyan
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Ines Batinic-Haberle
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Ludmil T. Benov
- Department of Biochemistry, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
- * E-mail:
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192
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Rajh T, Dimitrijevic NM, Bissonnette M, Koritarov T, Konda V. Titanium Dioxide in the Service of the Biomedical Revolution. Chem Rev 2014; 114:10177-216. [DOI: 10.1021/cr500029g] [Citation(s) in RCA: 222] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Tijana Rajh
- Center
for Nanoscale Materials, Argonne National Laboratory, 9700 South
Cass Avenue, Argonne, Illinois 60540, United States
| | - Nada M. Dimitrijevic
- Center
for Nanoscale Materials, Argonne National Laboratory, 9700 South
Cass Avenue, Argonne, Illinois 60540, United States
| | - Marc Bissonnette
- Department
of Medicine, The University of Chicago Medicine, 5841 South Maryland Avenue, MC 4076, Chicago, Illinois 60637, United States
| | - Tamara Koritarov
- Center
for Nanoscale Materials, Argonne National Laboratory, 9700 South
Cass Avenue, Argonne, Illinois 60540, United States
- School
of Medicine, Boston University, 72 East Concord Street, Boston, Massachusetts 02118, United States
| | - Vani Konda
- Department
of Medicine, The University of Chicago Medicine, 5841 South Maryland Avenue, MC 4076, Chicago, Illinois 60637, United States
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193
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Yamamoto H, Demura T, Morita M, Kono S, Sekine K, Shinada T, Nakamura S, Tanii T. In situ modification of cell-culture scaffolds by photocatalytic decomposition of organosilane monolayers. Biofabrication 2014; 6:035021. [PMID: 25100800 DOI: 10.1088/1758-5082/6/3/035021] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We demonstrate a novel application of TiO2 photocatalysis for modifying the cell affinity of a scaffold surface in a cell-culture environment. An as-deposited octadecyltrichlorosilane self-assembled monolayer (OTS SAM) on TiO2 was found to be hydrophobic and stably adsorbed serum albumins that blocked subsequent adsorption of other proteins and cells. Upon irradiation of ultraviolet (UV) light, OTS molecules were decomposed and became permissive to the adhesion of PC12 cells via adsorption of an extracellular matrix protein, collagen. Optimal UV dose was 200 J cm(-2) for OTS SAM on TiO2. The amount of collagen adsorption decreased when excessive UV light was irradiated, most likely due to the surface being too hydrophilic to support its adsorption. This UV-induced modification required TiO2 to be present under the SAM and hence is a result of TiO2 photocatalysis. The UV irradiation for surface modification can be performed before cell plating or during cell culture. We also demonstrate that poly(ethylene glycol) SAM can also be patterned with this method, indicating that it is applicable to both hydrophobic and hydrophilic SAMs. This method provides a unique tool for fabricating cell microarrays and studying dynamical properties of living cells.
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Affiliation(s)
- Hideaki Yamamoto
- Waseda Institute for Advanced Study, Waseda University, 1-6-1 Nishi-waseda, Shinjuku-ku, Tokyo 169-8050, Japan. Nanotechnology Research Center, Waseda University, 513 Waseda Tsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan
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194
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Photosensitized mefloquine induces ROS-mediated DNA damage and apoptosis in keratinocytes under ambient UVB and sunlight exposure. Cell Biol Toxicol 2014; 30:253-68. [PMID: 25034908 DOI: 10.1007/s10565-014-9280-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 06/12/2014] [Indexed: 10/25/2022]
Abstract
The present study illustrates the photosensitizing behavior of mefloquine (MQ) in human skin keratinocytes under ambient doses of UVB and sunlight exposure. Photochemically, MQ generated reactive oxygen species superoxide radical, hydroxyl radical, and singlet oxygen through type I and type II photodynamic reactions, respectively, which caused photooxidative damage to DNA and formed localized DNA lesions cyclobutane pyrimidine dimers. Photosensitized MQ reduced the viability of keratinocytes to 25 %. Significant level of intracellular reactive oxygen species (ROS) generation was estimated through fluorescence probe DCF-H2. Increased apoptotic cells were evident through AO/EB staining and phosphatidyl serine translocation in cell membrane. Single-stranded DNA damage was marked through single-cell gel electrophoresis. Mitochondrial membrane depolarization and lysosomal destabilization were evident. Upregulation of Bax and p21 and downregulation of Bcl-2 genes and corresponding protein levels supported apoptotic cell death of keratinocyte cells. Cyclobutane pyrimidine dimers (CPDs) were confirmed through immunofluorescence. In addition, hallmarks of apoptosis and G2/M phase cell cycle arrest were confirmed through flow cytometry analysis. Our findings suggest that MQ may damage DNA and produce DNA lesions which may induce differential biological responses in the skin on brief exposure to UVB and sunlight.
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195
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Heterogeneous photocatalytic degradation of mordant black 11 with ZnO nanoparticles under UV–Vis light. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2013.11.007] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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196
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Gabriel D, Cohen-Karni T, Huang D, Chiang HH, Kohane DS. Photoactive electrospun fibers for inducing cell death. Adv Healthc Mater 2014; 3:494-9. [PMID: 24574265 DOI: 10.1002/adhm.201300318] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 09/16/2013] [Indexed: 11/07/2022]
Abstract
A photoactive electrospun material producing reactive oxygen species (ROS) upon light irradiation is reported. The phototoxicity of the generated ROS is spatially restricted to the fiber-tissue interface by conjugation of the photosensitizer to a macromolecule. Photo-triggered ROS is produced on demand and repeatedly. It induces death of mammalian cells growing on the material surface with high spatial resolution.
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Affiliation(s)
- Doris Gabriel
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine; Children's Hospital Boston, Harvard Medical School; 300 Longwood Avenue Boston MA 02115 USA
- Department of Chemical Engineering; Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Tzahi Cohen-Karni
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine; Children's Hospital Boston, Harvard Medical School; 300 Longwood Avenue Boston MA 02115 USA
- Department of Chemical Engineering; Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - David Huang
- Department of Chemical Engineering; Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Homer H. Chiang
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine; Children's Hospital Boston, Harvard Medical School; 300 Longwood Avenue Boston MA 02115 USA
- Department of Chemical Engineering; Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Daniel S. Kohane
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine; Children's Hospital Boston, Harvard Medical School; 300 Longwood Avenue Boston MA 02115 USA
- Department of Chemical Engineering; Massachusetts Institute of Technology; 77 Massachusetts Avenue Cambridge MA 02139 USA
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197
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Pedersen SK, Holmehave J, Blaikie FH, Gollmer A, Breitenbach T, Jensen HH, Ogilby PR. Aarhus Sensor Green: A Fluorescent Probe for Singlet Oxygen. J Org Chem 2014; 79:3079-87. [DOI: 10.1021/jo500219y] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Stephan K. Pedersen
- Center
for Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Langelandsgade
140, Aarhus 8000, Denmark
| | - Jeppe Holmehave
- Center
for Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Langelandsgade
140, Aarhus 8000, Denmark
| | - Frances H. Blaikie
- Center
for Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Langelandsgade
140, Aarhus 8000, Denmark
| | - Anita Gollmer
- Center
for Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Langelandsgade
140, Aarhus 8000, Denmark
| | - Thomas Breitenbach
- Center
for Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Langelandsgade
140, Aarhus 8000, Denmark
| | - Henrik H. Jensen
- Center
for Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Langelandsgade
140, Aarhus 8000, Denmark
| | - Peter R. Ogilby
- Center
for Oxygen Microscopy
and Imaging, Department of Chemistry, Aarhus University, Langelandsgade
140, Aarhus 8000, Denmark
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198
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Antonenko YN, Kotova EA, Omarova EO, Rokitskaya TI, Ol'shevskaya VA, Kalinin VN, Nikitina RG, Osipchuk JS, Kaplan MA, Ramonova AA, Moisenovich MM, Agapov II, Kirpichnikov MP. Photodynamic activity of the boronated chlorin e6 amide in artificial and cellular membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:793-801. [DOI: 10.1016/j.bbamem.2013.11.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 11/15/2013] [Accepted: 11/18/2013] [Indexed: 12/18/2022]
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199
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Shafeekh KM, Soumya MS, Rahim MA, Abraham A, Das S. Synthesis and characterization of near-infrared absorbing water soluble squaraines and study of their photodynamic effects in DLA live cells. Photochem Photobiol 2014; 90:585-95. [PMID: 24417651 DOI: 10.1111/php.12236] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 01/02/2014] [Indexed: 01/20/2023]
Abstract
Here, we report the synthesis, photophysical properties and photodynamic effects in DLA live cells of three water soluble squaraine dyes, viz. bisbenzothiazolium squaraine dyes SQMI and SQDI with iodine in one and both benzothiazolium units, respectively, and an unsymmetrical squaraine dye ASQI containing iodinated benzothiazolium and aniline substituents. The diiodinated SQDI showed an anomalous trend in both fluorescence and triplet quantum yields over the monoiodinated SQMI, with SQDI showing higher fluorescence and lower triplet quantum yields compared to SQMI. Nanosecond laser flash photolysis of SQDI and SQMI indicated the formation of triplet excited states with quantum yield of 0.19 and 0.26, respectively. On photoirradiation, both the SQDI and SQMI generate singlet oxygen and it was observed that both dyes undergoing oxidation reactions with the singlet oxygen generated. ASQI which exhibited a lower triplet quantum yield of 0.06 was, however, stable and did not react with the singlet oxygen generated. In vitro cytotoxicity studies of these dyes in DLA live cells were performed using Trypan blue dye exclusion method and it reflect an order of cytotoxicity of SQDI>SQMI>ASQI. Intracellular generation of the ROS was confirmed by dichlorofluorescein assay after the in vitro PDT.
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Affiliation(s)
- Kulathinte M Shafeekh
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST-CSIR), Trivandrum, India
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200
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Moor KJ, Kim JH. Simple synthetic method toward solid supported c60 visible light-activated photocatalysts. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:2785-91. [PMID: 24495005 DOI: 10.1021/es405283w] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Solid supported fullerene materials are prepared in aims of creating a fullerene-based photocatalyst that is capable of producing (1)O2 in the aqueous phase. Past studies of using fullerene as a photocatalyst in water have exclusively focused on using water soluble fullerene derivatives and employed sophisticated chemistry to create immobilized fullerene materials. The method presented herein is much less synthetically complex and utilizes pristine fullerene, providing a drastically simpler route to supported fullerene materials and furthering their potential for use in environmental applications. Covalent immobilization was achieved through the nucleophilic addition of a terminal amine (located on a solid support) across a [6,6] fullerene double bond, resulting in attachment directly to C60's cage. Immobilization allowed supported fullerene moieties to produce (1)O2 in water under various illumination conditions and inactivate MS2 bacteriophages. In a water with natural organic matter, supported fullerene materials produced (1)O2 under visible light irradiation without exhibiting significant loss of photocatalytic activity after successive cycling.
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Affiliation(s)
- Kyle J Moor
- Department of Chemical & Environmental Engineering, School of Engineering & Applied Science, Yale University , 9 Hillhouse Avenue, New Haven, Connecticut 06511, United States
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