1
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Voicescu M. Preliminary Insights into the Fluorescence and Oxidative Characteristics of Flavin - DNA Systems on PVP - Coated Silver Nanoparticles. J Fluoresc 2024:10.1007/s10895-023-03549-w. [PMID: 38227141 DOI: 10.1007/s10895-023-03549-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 12/12/2023] [Indexed: 01/17/2024]
Abstract
Emissive features of flavins (Riboflavin/RF, Flavin MonoNucleotide/FMN and Flavin Adenine Dinucleotide/FAD) labeled native Deoxyribonucleic Acid (DNA) on Polyvinylpyrrolidone (PVP)-coated silver nanoparticles (SNPs), have been studied. The dual emission of flavins in DNA-PVP-coated SNPs systems is strongly influenced by the reaction time and temperature. Changes in the RF emissive features occur as a side effect when DNA is covalently linked hence, the RF destruction depends on DNA damage. Even if in an oxidation process, the FAD-DNA - PVP-coated SNPs system acts as a weak scavenger of reactive oxygen species, its antioxidant activity is approx. five times higher than that of RF-DNA-PVP-coated SNPs system. Destruction of RF by a riboflavin-mediated DNA photo-oxidation process that occurs on PVP-coated SNPs is suggested. Results have relevance in the redox process of riboflavin and provide valuable information for the further development of novel flavin-based SNPs systems as fluorescent antioxidant markers to solve several biological barriers in humans, such as protein-DNA interaction, cell binding.
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Affiliation(s)
- Mariana Voicescu
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, Splaiul Independentei 202, Bucharest, 060021, Romania.
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2
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Two Photon Absorption Properties of CBHB and DEABHB Single Crystals for Optical Limiting Applications. J Fluoresc 2022; 33:1077-1087. [PMID: 36571646 DOI: 10.1007/s10895-022-03070-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 11/02/2022] [Indexed: 12/27/2022]
Abstract
Novel materials of (E)-N'-(4-chlorobenzylidene)-4-hydroxybenzohydrazide (CBHB) and (E)-N'-(4-(diethylamino) benzylidene)-4-hydroxybenzohydrazide (DEABHB) were synthesized by condensation reaction process and solvent evaporation method was employed to grow CBHB and DEABHB single crystals at room temperature. Lattice parameters of CBHB and DEABHB compounds were recorded using single crystal X-ray diffraction method. The presence of functional groups of the synthesized CBHB and DEABHB compounds were confirmed by Fourier transform infrared and Fourier transform Raman spectral analyses. Various intermolecular interactions were studied using Hirshfeld surface analysis. Thermal stability of the hydrazone Schiff base compounds CBHB and DEABHB were studied by thermogravimetric and differential thermal analyses. Third order nonlinear optical properties of CBHB and DEABHB were measured using open aperature Z scan technique. Two photon absorption coefficient and optical limiting properties of the crystals were reported from the Z scan studies.
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Matveev AT, Varlamova LA, Konopatsky AS, Leybo DV, Volkov IN, Sorokin PB, Fang X, Shtansky DV. A New Insight into the Mechanisms Underlying the Discoloration, Sorption, and Photodegradation of Methylene Blue Solutions with and without BNO x Nanocatalysts. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15228169. [PMID: 36431653 PMCID: PMC9693246 DOI: 10.3390/ma15228169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/15/2022] [Accepted: 11/15/2022] [Indexed: 05/13/2023]
Abstract
Methylene blue (MB) is widely used as a test material in photodynamic therapy and photocatalysis. These applications require an accurate determination of the MB concentration as well as the factors affecting the temporal evolution of the MB concentration. Optical absorbance is the most common method used to estimate MB concentration. This paper presents a detailed study of the dependence of the optical absorbance of aqueous methylene blue (MB) solutions in a concentration range of 0.5 to 10 mg·L-1. The nonlinear behavior of optical absorbance as a function of MB concentration is described for the first time. A sharp change in optical absorption is observed in the range of MB concentrations from 3.33 to 4.00 mg·L-1. Based on the analysis of the absorption spectra, it is concluded that this is due to the formation of MB dimers and trimers in the specific concentration range. For the first time, a strong, thermally induced discoloration effect of the MB solution under the influence of visible and sunlight was revealed: the simultaneous illumination and heating of MB solutions from 20 to 80 °C leads to a twofold decrease in the MB concentration in the solution. Exposure to sunlight for 120 min at a temperature of 80 °C led to the discoloration of the MB solution by more than 80%. The thermally induced discoloration of MB solutions should be considered in photocatalytic experiments when tested solutions are not thermally stabilized and heated due to irradiation. We discuss whether MB is a suitable test material for photocatalytic experiments and consider this using the example of a new photocatalytic material-boron oxynitride (BNOx) nanoparticles-with 4.2 and 6.5 at.% of oxygen. It is shown that discoloration is a complex process and includes the following mechanisms: thermally induced MB photodegradation, MB absorption on BNOx NPs, self-sensitizing MB photooxidation, and photocatalytic MB degradation. Careful consideration of all these processes makes it possible to determine the photocatalytic contribution to the discoloration process when using MB as a test material. The photocatalytic activity of BNOx NPs containing 4.2 and 6.5 at.% of oxygen, estimated at ~440 μmol·g-1·h-1. The obtained results are discussed based on the results of DFT calculations considering the effect of MB sorption on its self-sensitizing photooxidation activity. A DFT analysis of the MB sorption capacity with BNOx NPs shows that surface oxygen defects prevent the sorption of MB molecules due to their planar orientation over the BNOx surface. To enhance the sorption capacity, surface oxygen defects should be eliminated.
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Affiliation(s)
- Andrei T. Matveev
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
- Correspondence: (A.T.M.); (D.V.S.)
| | - Liubov A. Varlamova
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
| | - Anton S. Konopatsky
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
| | - Denis V. Leybo
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
| | - Ilia N. Volkov
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
| | - Pavel B. Sorokin
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
| | - Xiaosheng Fang
- Department of Materials Science, Fudan University, Shanghai 200433, China
| | - Dmitry V. Shtansky
- Research Laboratory Inorganic Nanomaterials, National University of Science and Technology (MISIS), Leninskiy Prospect 4, 119049 Moscow, Russia
- Correspondence: (A.T.M.); (D.V.S.)
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4
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Malacarne MC, Gariboldi MB, Caruso E. BODIPYs in PDT: A Journey through the Most Interesting Molecules Produced in the Last 10 Years. Int J Mol Sci 2022; 23:ijms231710198. [PMID: 36077597 PMCID: PMC9456687 DOI: 10.3390/ijms231710198] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 08/31/2022] [Indexed: 11/19/2022] Open
Abstract
Over the past 30 years, photodynamic therapy (PDT) has shown great development. In the clinical setting the few approved molecules belong almost exclusively to the porphyrin family; but in the scientific field, in recent years many researchers have been interested in other families of photosensitizers, among which BODIPY has shown particular interest. BODIPY is the acronym for 4,4-difluoro-4-bora-3a, 4a-diaza-s-indacene, and is a family of molecules well-known for their properties in the field of imaging. In order for these molecules to be used in PDT, a structural modification is necessary which involves the introduction of heavy atoms, such as bromine and iodine, in the beta positions of the pyrrole ring; this change favors the intersystem crossing, and increases the 1O2 yield. This mini review focused on a series of structural changes made to BODIPYs to further increase 1O2 production and bioavailability by improving cell targeting or photoactivity efficiency.
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Wang S, Zhao Z, Yao J, Jiang S, Li ZT, Ma D. Reactive oxygen specie-induced photodynamic therapy activation by supramolecular strategy. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Calvo G, Céspedes M, Casas A, Di Venosa G, Sáenz D. Hydrogen sulfide decreases photodynamic therapy outcome through the modulation of the cellular redox state. Nitric Oxide 2022; 125-126:57-68. [PMID: 35728762 DOI: 10.1016/j.niox.2022.06.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/06/2022] [Accepted: 06/15/2022] [Indexed: 11/17/2022]
Abstract
Photodynamic therapy (PDT) is a non-surgical treatment that has been approved for its human medical use in many cancers. PDT involves the interaction of a photosensitizer (PS) with light. The amino acid 5- aminolevulinic acid (ALA) can be used as a pro-PS, leading to the synthesis of Protoporphyrin IX. Hydrogen sulfide (H2S) is an endogenously produced gas that belongs to the gasotransmitter family, which can diffuse through biological membranes and have relevant physiological effects such as cardiovascular functions, vasodilatation, inflammation, cell cycle and neuro-modulation. It was also proposed to have cytoprotective effects. We aimed to study the modulatory effects of H2S on ALAPDT in the mammary adenocarcinoma cell line LM2. Exposure of the cells to NaHS (donor of H2S) in concentrations up to 10 mM impaired the response to ALA-PDT in a dose-dependent manner. The addition of 3 doses of NaHS showed the highest effect. This decreased response to the photodynamic treatment was correlated to an increase in the GSH levels, catalase activity, a dose dependent reduction of PpIX and increased intracellular ALA, decreased levels of oxidized proteins and a decrease of PDT-induced ROS. NaHS also reduced the levels of singlet oxygen in an in vitro assay. H2S also protected other cells of different origins against PDT mediated by ALA and other PSs. These results suggest that H2S has a role in the modulation of the redox state of the cells, and thus impairs the response to ALA-PDT through multifactor pathways. These findings could contribute to developing new strategies to improve the effectiveness of PDT particularly mediated by ALA or other ROS-related treatments.
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Affiliation(s)
- Gustavo Calvo
- Centro de Investigaciones Sobre Porfirinas y Porfirias - CIPYP, U.B.A.-CONICET, Hospital de Clínicas Gral. José de San Martín. Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Mariela Céspedes
- Centro de Investigaciones Sobre Porfirinas y Porfirias - CIPYP, U.B.A.-CONICET, Hospital de Clínicas Gral. José de San Martín. Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Adriana Casas
- Centro de Investigaciones Sobre Porfirinas y Porfirias - CIPYP, U.B.A.-CONICET, Hospital de Clínicas Gral. José de San Martín. Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Gabriela Di Venosa
- Centro de Investigaciones Sobre Porfirinas y Porfirias - CIPYP, U.B.A.-CONICET, Hospital de Clínicas Gral. José de San Martín. Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Daniel Sáenz
- Centro de Investigaciones Sobre Porfirinas y Porfirias - CIPYP, U.B.A.-CONICET, Hospital de Clínicas Gral. José de San Martín. Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina.
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7
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Fluorescent Flavin/PVP-Coated Silver Nanoparticles: Design and Biological Performance. J Fluoresc 2022; 32:1309-1319. [PMID: 35362934 DOI: 10.1007/s10895-022-02909-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 02/16/2022] [Indexed: 10/18/2022]
Abstract
A red-emitting fluorescent Riboflavin (RF)/Polyvinylpyrrolidone (PVP)-coated silver nanoparticles system, λem = 527 nm, Φ = 0.242, with a diameter of the metallic core of 27.33 nm and a zeta potential of - 25.05 mV was prepared and investigated regarding its biological activity. We found that PVP has a key role in RF adsorption around the SNPs surface leading to an enhancement of antioxidant properties (∼70%), low cytotoxicity (> 90% cell viability, at 50 µL/mL, after 48 h of incubation) as well as to an efficient process of its cellular uptake (∼ 60%, after 24 h of incubation) in L929 cells. The results are relevant concerning the involvement of RF and its coenzymes forms in SNPs - based systems, in cellular respiration as well as for future studies as antioxidant marker system on tumoral cells for viewing and monitoring them, by cellular imaging.
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8
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Synthesis and photophysical evaluation of meso-phenyl-1,4-dihydropyridineand pyridine-porphyrin hybrids. Chem Heterocycl Compd (N Y) 2022. [DOI: 10.1007/s10593-021-03043-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Yasothamani V, Karthikeyan L, Sarathy NP, Vivek R. Targeted Designing of Multimodal Tumor-Seeking Nanomedicine for Breast Cancer-Specific Triple-Therapeutic Effects. ACS APPLIED BIO MATERIALS 2021; 4:6575-6588. [DOI: 10.1021/acsabm.1c00740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vellingiri Yasothamani
- Cancer Research Program, Bio-Nano Therapeutics Research Laboratory, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore 641046, TN, India
| | - Laxmanan Karthikeyan
- Cancer Research Program, Bio-Nano Therapeutics Research Laboratory, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore 641046, TN, India
| | - Namratha Partha Sarathy
- Cancer Research Program, Bio-Nano Therapeutics Research Laboratory, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore 641046, TN, India
| | - Raju Vivek
- Cancer Research Program, Bio-Nano Therapeutics Research Laboratory, Department of Zoology, School of Life Sciences, Bharathiar University, Coimbatore 641046, TN, India
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10
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Konopińska J, Młynarczyk M, Dmuchowska DA, Obuchowska I. Posterior Capsule Opacification: A Review of Experimental Studies. J Clin Med 2021; 10:jcm10132847. [PMID: 34199147 PMCID: PMC8269180 DOI: 10.3390/jcm10132847] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 06/13/2021] [Accepted: 06/24/2021] [Indexed: 11/16/2022] Open
Abstract
Posterior capsule opacification (PCO) is the most common complication of cataract surgery. It causes a gradual deterioration of visual acuity, which would otherwise improve after a successful procedure. Despite recent advances in ophthalmology, this complication has not been eradicated, and the incidence of PCO can be as high as 10%. This article reviews the literature concerning the pathomechanism of PCO and examines the biochemical pathways involved in its formation and methods to prevent this complication. We also review the reported tests performed in cell cultures under laboratory conditions and in experimental animal models and in ex vivo human lens capsules. Finally, we describe research involving human eyes in the clinical setting and pharmacological methods that may reduce the frequency of PCO. Due to the multifactorial etiology of PCO, in vitro studies make it possible to assess the factors contributing to its complications and search for new therapeutic targets. Not all pathways involved in cell proliferation, migration, and contraction of the lens capsule are reproducible in laboratory conditions; moreover, PCO in humans and laboratory animals may be additionally stimulated by various degrees of postoperative reactions depending on the course of surgery. Therefore, further studies are necessary.
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11
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Maliszewska I, Wanarska E, Thompson AC, Samuel IDW, Matczyszyn K. Biogenic Gold Nanoparticles Decrease Methylene Blue Photobleaching and Enhance Antimicrobial Photodynamic Therapy. Molecules 2021; 26:molecules26030623. [PMID: 33504099 PMCID: PMC7865674 DOI: 10.3390/molecules26030623] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/16/2021] [Accepted: 01/20/2021] [Indexed: 12/14/2022] Open
Abstract
Antibiotic resistance is a growing concern that is driving the exploration of alternative ways of killing bacteria. Here we show that gold nanoparticles synthesized by the mycelium of Mucor plumbeus are an effective medium for antimicrobial photodynamic therapy (PDT). These particles are spherical in shape, uniformly distributed without any significant agglomeration, and show a single plasmon band at 522–523 nm. The nanoparticle sizes range from 13 to 25 nm, and possess an average size of 17 ± 4 nm. In PDT, light (from a source consisting of nine LEDs with a peak wavelength of 640 nm and FWMH 20 nm arranged in a 3 × 3 array), a photosensitiser (methylene blue), and oxygen are used to kill undesired cells. We show that the biogenic nanoparticles enhance the effectiveness of the photosensitiser, methylene blue, and so can be used to kill both Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria. The enhanced effectiveness means that we could kill these bacteria with a simple, small LED-based light source. We show that the biogenic gold nanoparticles prevent fast photobleaching, thereby enhancing the photoactivity of the methylene blue (MB) molecules and their bactericidal effect.
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Affiliation(s)
- Irena Maliszewska
- Department of Organic and Medicinal Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland;
- Correspondence: (I.M.); (K.M.); Tel.: +48-71-320-4008 (K.M.)
| | - Ewelina Wanarska
- Department of Organic and Medicinal Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland;
| | - Alex C. Thompson
- Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9AJ, UK; (A.C.T.); (I.D.W.S.)
| | - Ifor D. W. Samuel
- Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9AJ, UK; (A.C.T.); (I.D.W.S.)
| | - Katarzyna Matczyszyn
- Advanced Materials Engineering and Modelling Group, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
- Correspondence: (I.M.); (K.M.); Tel.: +48-71-320-4008 (K.M.)
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12
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Cho HJ, Park SJ, Jung WH, Cho Y, Ahn DJ, Lee YS, Kim S. Injectable Single-Component Peptide Depot: Autonomously Rechargeable Tumor Photosensitization for Repeated Photodynamic Therapy. ACS NANO 2020; 14:15793-15805. [PMID: 33175520 DOI: 10.1021/acsnano.0c06881] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The general practice of photodynamic therapy (PDT) comprises repeated multiple sessions, where photosensitizers are repeatedly administered prior to each operation of light irradiation. To address potential problems arising from the total overdose of photosensitizer by such repeated injections, we here introduce an internalizing RGD peptide (iRGD) derivative (Ppa-iRGDC-BK01) that self-aggregates into an injectable single-component supramolecular depot. Ppa-iRGDC-BK01 is designed as an in situ self-implantable photosensitizer so that it forms a depot by itself upon injection, and its molecular functions (cancer cell internalization and photosensitization) are activated by sustained release, tumor targeting, and tumor-selective proteolytic/reductive cleavage of the iRGD segment. The experimental and theoretical studies revealed that when exposed to body temperature, Ppa-iRGDC-BK01 undergoes thermally accelerated self-assembly to form a supramolecular depot through the hydrophobic interaction of the Ppa pendants and the reorganization of the interpeptide hydrogen bonding. It turned out that the self-aggregation of Ppa-iRGDC-BK01 into a depot exerts a multiple-quenching effect on the photosensitivity to effectively prevent nonspecific phototoxicity and protect it from photobleaching outside the tumor, while enabling autonomous tumor rephotosensitization by long sustained release, tumor accumulation, and intratumoral activation over time. We demonstrate that depot formation through a single peritumoral injection and subsequent quintuple laser irradiations at intervals resulted in complete eradication of the tumor. During the repeated PDT, depot-implanted normal tissues around the tumor exhibited no phototoxic damage under laser exposure. Our approach of single-component photosensitizing supramolecular depot, combined with a strategy of tumor-targeted therapeutic activation, would be a safer and more precise operation of PDT through a nonconventional protocol composed of one-time photosensitizer injection and multiple laser irradiations.
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Affiliation(s)
- Hong-Jun Cho
- Center for Theragnosis, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Sung-Jun Park
- Center for Theragnosis, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Woo Hyuk Jung
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Yuri Cho
- Center for Theragnosis, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea
| | - Dong June Ahn
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea
| | - Yoon-Sik Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Sehoon Kim
- Center for Theragnosis, Korea Institute of Science and Technology, 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Republic of Korea
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13
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Sirotkina MA, Gubarkova EV, Plekhanov AA, Sovetsky AA, Elagin VV, Matveyev AL, Matveev LA, Kuznetsov SS, Zagaynova EV, Gladkova ND, Zaitsev VY. In vivo assessment of functional and morphological alterations in tumors under treatment using OCT-angiography combined with OCT-elastography. BIOMEDICAL OPTICS EXPRESS 2020; 11:1365-1382. [PMID: 32206416 PMCID: PMC7075625 DOI: 10.1364/boe.386419] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/08/2020] [Accepted: 02/09/2020] [Indexed: 05/13/2023]
Abstract
Emerging methods of anti-tumor therapies require new approaches to tumor response evaluation, especially enabling label-free diagnostics and in vivo utilization. Here, to assess the tumor early reaction and predict its long-term response, for the first time we apply in combination the recently developed OCT extensions - optical coherence angiography (OCA) and compressional optical coherence elastography (OCE), thus enabling complementary functional/microstructural tumor characterization. We study two vascular-targeted therapies of different types, (1) anti-angiogenic chemotherapy (ChT) and (2) photodynamic therapy (PDT), aimed to indirectly kill tumor cells through blood supply injury. Despite different mechanisms of anti-angiogenic action for ChT and PDT, in both cases OCA demonstrated high sensitivity to blood perfusion cessation. The new method of OCE-based morphological segmentation revealed very similar histological structure alterations. The OCE results showed high correlation with conventional histology in evaluating percentages of necrotic and viable tumor zones. Such possibilities make OCE an attractive tool enabling previously inaccessible in vivo monitoring of individual tumor response to therapies without taking multiple biopsies.
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Affiliation(s)
| | | | | | | | - Vadim V. Elagin
- Privolzhsky Research Medical University, Nizhny Novgorod, Russia
| | | | - Lev A. Matveev
- Institute of Applied Physics RAS, Nizhny Novgorod, Russia
| | - Sergey S. Kuznetsov
- N.A. Semashko Nizhny Novgorod Regional Clinical Hospital, Nizhny Novgorod, Russia
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14
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Zaitsev VY, Matveyev AL, Matveev LA, Gelikonov GV, Baum OI, Omelchenko AI, Shabanov DV, Sovetsky AA, Yuzhakov AV, Fedorov AA, Siplivy VI, Bolshunov AV, Sobol EN. Revealing structural modifications in thermomechanical reshaping of collagenous tissues using optical coherence elastography. JOURNAL OF BIOPHOTONICS 2019; 12:e201800250. [PMID: 30417604 DOI: 10.1002/jbio.201800250] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 10/06/2018] [Accepted: 11/06/2018] [Indexed: 05/20/2023]
Abstract
Moderate heating of such collagenous tissues as cornea and cartilages by infra-red laser (IR laser) irradiation is an emerging technology for nondestructive modification of the tissue shape and microstructure for a variety of applications in ophthalmology, otolaryngology and so on. Postirradiation high-resolution microscopic examination indicates the appearance of microscopic either spheroidal or crack-like narrow pores depending on the tissue type and irradiation regime. Such examinations usually require special tissue preparation (eg, staining, drying that affect microstructure themselves) and are mostly suitable for studying individual pores, whereas evaluation of their averaged parameters, especially in situ, is challenging. Here, we demonstrate the ability of optical coherence tomography (OCT) to visualize areas of pore initiation and evaluate their averaged properties by combining visualization of residual irradiation-induced tissue dilatation and evaluation of the accompanying Young-modulus reduction by OCT-based compressional elastography. We show that the averaged OCT-based data obtained in situ fairly well agree with the microscopic examination results. The results obtained develop the basis for effective and safe applications of novel nondestructive laser technologies of tissue modification in clinical practice. PICTURE: Elastographic OCT-based images of an excised rabbit eye cornea subjected to thermomechanical laser-assisted reshaping. Central panel shows resultant cumulative dilatation in cornea after moderate (~45-50°C) pulse-periodic heating by an IR laser together with distribution of the inverse Young modulus 1/E before (left) and after (right) IR irradiation. Significant modulus decrease in the center of irradiated region is caused by initiated micropores. Their parameters can be extracted by analyzing the elastographic images.
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Affiliation(s)
- Vladimir Y Zaitsev
- Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
| | - Alexander L Matveyev
- Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
| | - Lev A Matveev
- Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
| | - Grigory V Gelikonov
- Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
| | - Olga I Baum
- Institute of Photon Technologies, Federal Scientific Research Centre "Crystallography and Photonics", Russian Academy of Sciences, Moscow, Russia
| | - Alexander I Omelchenko
- Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
- Institute of Photon Technologies, Federal Scientific Research Centre "Crystallography and Photonics", Russian Academy of Sciences, Moscow, Russia
| | - Dmitry V Shabanov
- Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
| | - Alexander A Sovetsky
- Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
| | - Alexey V Yuzhakov
- Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
- Institute of Photon Technologies, Federal Scientific Research Centre "Crystallography and Photonics", Russian Academy of Sciences, Moscow, Russia
| | | | | | | | - Emil N Sobol
- Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia
- Institute of Photon Technologies, Federal Scientific Research Centre "Crystallography and Photonics", Russian Academy of Sciences, Moscow, Russia
- IPG Medical Corporation, Marlborough, Massachusetts
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15
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Dou Y, Liu Y, Zhao F, Guo Y, Li X, Wu M, Chang J, Yu C. Radiation-responsive scintillating nanotheranostics for reduced hypoxic radioresistance under ROS/NO-mediated tumor microenvironment regulation. Am J Cancer Res 2018; 8:5870-5889. [PMID: 30613268 PMCID: PMC6299445 DOI: 10.7150/thno.27351] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Accepted: 10/27/2018] [Indexed: 11/22/2022] Open
Abstract
Abstract: Hypoxia-induced radioresistance is the primary reason for failure of tumor radiotherapy (RT). Changes within the irradiated tumor microenvironment (TME) including oxygen, reactive oxygen species (ROS) and nitric oxide (NO) are closely related to radioresistance. Therefore, there is an urgent need to develop new approaches for overcoming hypoxic radioresistance by incorporating TME regulation into current radiotherapeutic strategies. Methods: Herein, we explored a radiation-responsive nanotheranostic system to enhance RT effects on hypoxic tumors by multi-way therapeutic effects. This system was developed by loading S-nitrosothiol groups (SNO, a NO donor) and indocyanine green (ICG, a photosensitizer) onto mesoporous silica shells of Eu3+-doped NaGdF4 scintillating nanocrystals (NSC). Results: Under X-ray radiation, this system can increase the local dosage by high-Z elements, promote ROS generation by X-ray-induced photodynamic therapy, and produce high levels of NO to enhance tumor-killing effects and improve hypoxia via NO-induced vasodilation. In vitro and in vivo studies revealed that this combined strategy can greatly reinforce DNA damage and apoptosis of hypoxic tumor cells, while significantly suppressing tumor growth, improving tumor hypoxia and promoting p53 up-regulation and HIF1α down-regulation. In addition, this system showed pronounced tumor contrast performance in T1-weighted magnetic resonance imaging and computed tomography. Conclusion: This work demonstrates the great potential of scintillating nanotheranostics for multimodal imaging-guided X-ray radiation-triggered tumor combined therapy to overcome radioresistance.
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Sciuti L, Cocca L, Caires A, Gonçalves P, de Boni L. Picosecond dynamic of aqueous sodium-copper chlorophyllin solution: An excited state absorption study. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Paul S, Heng PWS, Chan LW. Improvement in dissolution rate and photodynamic efficacy of chlorin e6 by sucrose esters as drug carrier in nanosuspension formulation: optimisation and in vitro characterisation. ACTA ACUST UNITED AC 2018; 70:1152-1163. [PMID: 29943465 DOI: 10.1111/jphp.12947] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 05/28/2018] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Chlorin e6 is a poorly water-soluble photoactive drug. Its monomers form aggregates at the tumour physiological pH, which drastically reduces its photodynamic efficacy. This study aimed to improve the dissolution rate and photodynamic efficacy of chlorin e6 by nanosuspension formulation using biodegradable sucrose esters as drug carrier. METHODS A modified emulsion-solvent diffusion method was used to prepare the nanosuspension, where amount of Ce6, ratio of sucrose monopalmitate to sucrose monolaurate as carrier and ratio of dichloromethane to acetone as solvent, were varied using central composite design. Particle size, zeta potential, encapsulation efficiency and in vitro drug release characteristics of the nanosuspensions were evaluated. The formulation was optimised by response surface methodology and its photodynamic efficacy evaluated. KEY FINDINGS The optimised nanosuspension had mean particle size of ~200 nm, 88% drug encapsulation efficiency and faster drug release compared to pure Ce6. Spectroscopic studies showed that Ce6 exists in monomeric form in the carrier, which facilitated a remarkable increase in cellular uptake, in vitro singlet oxygen generation and cytotoxicity to oral squamous carcinoma cells. CONCLUSIONS The dissolution rate and photodynamic efficacy of Ce6 were markedly improved by formulating the drug as a nanosuspension with sucrose esters as drug carrier.
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Affiliation(s)
- Shubhajit Paul
- Department of Pharmaceutics, College of Pharmacy, University of Minnesota, Minneapolis, MN, USA
| | - Paul Wan Sia Heng
- GEANUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, Singapore, Singapore
| | - Lai Wah Chan
- GEANUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, Singapore, Singapore
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18
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Hua X, Li Y, Ma H, Zhang W, Qin J, Zhang J, Cao H. Photodynamic therapy versus endoscopic submucosal dissection for management of patients with early esophageal neoplasia: a retrospective study. J Thorac Dis 2017; 9:5046-5051. [PMID: 29312709 DOI: 10.21037/jtd.2017.11.117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Background Photodynamic therapy (PDT) and endoscopic submucosal dissection (ESD) have been proposed as a treatment for early esophageal neoplasia. The objective of this study is to compare between the clinical outcome after ESD and PDT to reach the best management for early esophageal neoplasia. Methods All patients undergoing ESD or PDT for early esophageal neoplasia between 2014 and 2015 were eligible for the study. A retrospective analysis for comparison between the results of ESD and PDT was done. Results 36 patients underwent ESD and Thirty PDT. No significant difference was found between the two groups regarding the demographic or pathologic data. Also, there was no significant difference regarding the length of hospital stay, presence of hydrothorax, fever, and pain. Operative time was significantly longer in ESD than in PDT (72 vs. 8 minutes, P<0.001). In addition, bleeding was significantly lower in ESD than PDT (12 vs. 2, P<0.05). There was a significant difference regarding stricture and cost which were less in ESD (6 vs. 15, P<0.05). However, perforation was much more in ESD (6 vs. 0, P<0.05). There was no significant difference between the two groups regarding the disease free survival (DFS), but it was observed that patients who underwent PDT had more favorable 2-year DFS rates than patients received ESD. Conclusions The PDT may be comparable to the ESD. With the exception of esophageal stenosis, PDT could reduce many complications and have longer DFS in comparison with ESD. PDT is feasible for patients with early esophageal neoplasia confined to the mucosal layer without regional lymph nodal or distant metastasis.
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Affiliation(s)
- Xionghuai Hua
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou 450008, China
| | - Yin Li
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou 450008, China
| | - Haibo Ma
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou 450008, China
| | - Wei Zhang
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou 450008, China
| | - Jianjun Qin
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou 450008, China
| | - Jun Zhang
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou 450008, China
| | - Haixia Cao
- Department of Thoracic Surgery, The Affiliated Tumor Hospital of Zhengzhou University, Henan Tumor Hospital, Zhengzhou 450008, China
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19
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Kim JW, Jacobsen B, Zolfaghari E, Ferrario A, Chevez-Barrios P, Berry JL, Lee DK, Rico G, Madi I, Rao N, Stachelek K, Wang LC, Gomer C. Rabbit model of ocular indirect photodynamic therapy using a retinoblastoma xenograft. Graefes Arch Clin Exp Ophthalmol 2017; 255:2363-2373. [DOI: 10.1007/s00417-017-3805-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 08/07/2017] [Accepted: 09/12/2017] [Indexed: 11/28/2022] Open
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20
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Khaliq NU, Oh KS, Sandra FC, Joo Y, Lee J, Byun Y, Kim IS, Kwon IC, Seo JH, Kim SY, Yuk SH. Assembly of polymer micelles through the sol-gel transition for effective cancer therapy. J Control Release 2017; 255:258-269. [DOI: 10.1016/j.jconrel.2017.04.039] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 04/02/2017] [Accepted: 04/26/2017] [Indexed: 12/31/2022]
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21
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Olejek A, Gabriel I, Bilska-Janosik A, Kozak-Darmas I, Kawczyk-Krupka A. ALA-Photodynamic treatment in Lichen sclerosus-clinical and immunological outcome focusing on the assesment of antinuclear antibodies. Photodiagnosis Photodyn Ther 2017; 18:128-132. [PMID: 28219801 DOI: 10.1016/j.pdpdt.2017.02.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 01/22/2017] [Accepted: 02/10/2017] [Indexed: 10/20/2022]
Abstract
BACKGROUND Lichen sclerosus (LS) is a difficult to treat, often relapsing disease with unknown background. Autoimmune diseases also coexist with LS. Over recent years photodynamic therapy (PDT) has been shown to be a noninvasive and successful therapeutic approach for the effective treatment of many conditions. However, the change of immune status of the patients based on ANA antibodies has not been yet reported. Our aim was to observe the clinical response followed by possible changes in autoimmune antibodies levels before and after PDT for LS. MATERIAL AND METHODS We enrolled 100 women with Lichen sclerosus with or without a concomitant autoimmune disease. All patients received 10 cycles of PDT (65 treated with DIOMED Light, 35 with PhotoDYN Light). We assessed autoimmune antibodies before and after PDT in addition to the clinical response evaluation.Two-year prospective controlled before-and-after study. RESULTS Following PDT, patients showed a significant attenuation in symptoms' intensity (itching, pruritus, vulvar discomfort). After therapy 41% of patients had partial response, 51% of patients had no symptoms and 8% had persistent or worsened symptoms. The most frequent autoimmune disease were thyroid disorders, followed by vitiligo and arthritis. 57% patients with an additional autoimmune disease before PDT had ANA antibodies. The mean level of ANA in this group diminished significantly after PDT treatment (261.74 IU/ml before vs. 123.20 IU/ml after treatment). CONCLUSION Based on our results, we assume that PDT may influence the immune status of patients with Lichen sclerosus.
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Affiliation(s)
- Anita Olejek
- School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia in Katowice, Department of Gynecology, Obstetrics and Oncological Gynecology, Batorego 15, 41-902, Bytom, Poland
| | - Iwona Gabriel
- School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia in Katowice, Department of Gynecology, Obstetrics and Oncological Gynecology, Batorego 15, 41-902, Bytom, Poland; Division of Urogynecology, Brigham and Women's Hospital, Boston, USA
| | - Anna Bilska-Janosik
- School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia in Katowice, Department of Gynecology, Obstetrics and Oncological Gynecology, Batorego 15, 41-902, Bytom, Poland
| | - Iwona Kozak-Darmas
- School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia in Katowice, Department of Gynecology, Obstetrics and Oncological Gynecology, Batorego 15, 41-902, Bytom, Poland
| | - Aleksandra Kawczyk-Krupka
- School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia in Katowice, Department of Internal Medicine, Angiology and Physical Medicine, Center for Laser Diagnostics and Therapy, Batorego 15, 41-902, Bytom, Poland.
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Sirotkina MA, Matveev LA, Shirmanova MV, Zaitsev VY, Buyanova NL, Elagin VV, Gelikonov GV, Kuznetsov SS, Kiseleva EB, Moiseev AA, Gamayunov SV, Zagaynova EV, Feldchtein FI, Vitkin A, Gladkova ND. Photodynamic therapy monitoring with optical coherence angiography. Sci Rep 2017; 7:41506. [PMID: 28148963 PMCID: PMC5288644 DOI: 10.1038/srep41506] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 12/19/2016] [Indexed: 12/04/2022] Open
Abstract
Photodynamic therapy (PDT) is a promising modern approach for cancer therapy with low normal tissue toxicity. This study was focused on a vascular-targeting Chlorine E6 mediated PDT. A new angiographic imaging approach known as M-mode-like optical coherence angiography (MML-OCA) was able to sensitively detect PDT-induced microvascular alterations in the mouse ear tumour model CT26. Histological analysis showed that the main mechanisms of vascular PDT was thrombosis of blood vessels and hemorrhage, which agrees with angiographic imaging by MML-OCA. Relationship between MML-OCA-detected early microvascular damage post PDT (within 24 hours) and tumour regression/regrowth was confirmed by histology. The advantages of MML-OCA such as direct image acquisition, fast processing, robust and affordable system opto-electronics, and label-free high contrast 3D visualization of the microvasculature suggest attractive possibilities of this method in practical clinical monitoring of cancer therapies with microvascular involvement.
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Affiliation(s)
- M A Sirotkina
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia
| | - L A Matveev
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia.,Institute of Applied Physics Russian Academy of Sciences, Ulyanova Street 46, 603950 Nizhny Novgorod, Russia
| | - M V Shirmanova
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia
| | - V Y Zaitsev
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia.,Institute of Applied Physics Russian Academy of Sciences, Ulyanova Street 46, 603950 Nizhny Novgorod, Russia
| | - N L Buyanova
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia
| | - V V Elagin
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia
| | - G V Gelikonov
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia.,Institute of Applied Physics Russian Academy of Sciences, Ulyanova Street 46, 603950 Nizhny Novgorod, Russia
| | - S S Kuznetsov
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia
| | - E B Kiseleva
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia
| | - A A Moiseev
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia.,Institute of Applied Physics Russian Academy of Sciences, Ulyanova Street 46, 603950 Nizhny Novgorod, Russia
| | - S V Gamayunov
- Republican Clinical Oncology Dispensary, Gladkova F. Street 23, 428000 Cheboksary, Russia
| | - E V Zagaynova
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia
| | - F I Feldchtein
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia
| | - A Vitkin
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia.,University of Toronto and University Health Network, 610 University Ave., Toronto, Ontario, M5G 2M9, Canada
| | - N D Gladkova
- Nizhny Novgorod State Medical Academy, Minina Square 10/1, 603005 Nizhny Novgorod, Russia
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23
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Park H, Lee J, Jeong S, Im BN, Kim MK, Yang SG, Na K. Lipase-Sensitive Transfersomes Based on Photosensitizer/Polymerizable Lipid Conjugate for Selective Antimicrobial Photodynamic Therapy of Acne. Adv Healthc Mater 2016; 5:3139-3147. [PMID: 27863184 DOI: 10.1002/adhm.201600815] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 09/22/2016] [Indexed: 12/20/2022]
Abstract
Acne vulgaris is a common skin problem affecting nearly 90% of adolescents and its development is associated with a colonization of Propionibacterium acnes (P. acnes). Although antibiotics have commonly been used to treat acne, antibiotic resistance of P. acnes is an emerging issue to be solved. In this study, a new way of photodynamic acne therapy is developed using P. acnes lipase-sensitive transfersome (DSPE-PEG-Pheo A (DPP) transfersome). For enhanced selectivity and skin penetration efficiency, DPP transfersomes are prepared from 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[amino(polyethylene glycol)-2000], pheophorbide A (Pheo A), cholesterol, and Tween-80. Incorporation of Tween-80 as an edge activator increases the deformability of DPP transfersomes, enhancing skin penetration efficiency to four times that of free Pheo A. The photoactivity of Pheo A quenched by DPP transfersomes is gradually recovered by selective cleavage of the ester linkage in DPP transfersomes by P. acnes lipases. In vitro P. acnes-specific photoactivity and subsequent selective antimicrobial effect exhibit a greater than 99% loss of P. acnes viability. In vivo antiacne therapeutic effect is confirmed by reduction of swelling volume and thickness of P. acnes-induced nude mice skin. These results demonstrate that DPP transfersome-mediated photodynamic therapy can be used as an alternative method to treat bacterial skin infections.
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Affiliation(s)
- Hyung Park
- Center for Photomedicine; Department of Biotechnology; The Catholic University of Korea; 43 Jibong-ro, Wonmi-gu Bucheon-si Gyeonggi-do 420-743 South Korea
| | - Jonghwan Lee
- Center for Photomedicine; Department of Biotechnology; The Catholic University of Korea; 43 Jibong-ro, Wonmi-gu Bucheon-si Gyeonggi-do 420-743 South Korea
| | - Songhee Jeong
- Center for Photomedicine; Department of Biotechnology; The Catholic University of Korea; 43 Jibong-ro, Wonmi-gu Bucheon-si Gyeonggi-do 420-743 South Korea
| | - Byeong Nam Im
- Center for Photomedicine; Department of Biotechnology; The Catholic University of Korea; 43 Jibong-ro, Wonmi-gu Bucheon-si Gyeonggi-do 420-743 South Korea
| | - Min-Kyoung Kim
- Department of New Drug Development; School of Medicine; Inha University; 2F A-dong, Jeongseok Bldg., Sinheung-dong 3-ga Jung-gu Incheon 400-712 Republic of Korea
| | - Su-Geun Yang
- Department of New Drug Development; School of Medicine; Inha University; 2F A-dong, Jeongseok Bldg., Sinheung-dong 3-ga Jung-gu Incheon 400-712 Republic of Korea
| | - Kun Na
- Center for Photomedicine; Department of Biotechnology; The Catholic University of Korea; 43 Jibong-ro, Wonmi-gu Bucheon-si Gyeonggi-do 420-743 South Korea
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24
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Tang W, Zhen Z, Wang M, Wang H, Chuang YJ, Zhang W, Wang GD, Todd T, Cowger T, Chen H, Liu L, Li Z, Xie J. Red Blood Cell-Facilitated Photodynamic Therapy for Cancer Treatment. ADVANCED FUNCTIONAL MATERIALS 2016; 26:1757-1768. [PMID: 31749670 PMCID: PMC6867707 DOI: 10.1002/adfm.201504803] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Photodynamic therapy (PDT) is a promising treatment modality for cancer management. So far, most PDT studies have focused on delivery of photosensitizers to tumors. O2, another essential component of PDT, is not artificially delivered but taken from the biological milieu. However, cancer cells demand a large amount of O2 to sustain their growth and that often leads to low O2 levels in tumors. The PDT process may further potentiate the oxygen deficiency, and in turn, adversely affect the PDT efficiency. In the present study, a new technology called red blood cell (RBC)-facilitated PDT, or RBC-PDT, is introduced that can potentially solve the issue. As the name tells, RBC-PDT harnesses erythrocytes, an O2 transporter, as a carrier for photosensitizers. Because photosensitizers are adjacent to a carry-on O2 source, RBC-PDT can efficiently produce 1O2 even under low oxygen conditions. The treatment also benefits from the long circulation of RBCs, which ensures a high intraluminal concentration of photosensitizers during PDT and hence maximizes damage to tumor blood vessels. When tested in U87MG subcutaneous tumor models, RBC-PDT shows impressive tumor suppression (76.7%) that is attributable to the codelivery of O2 and photosensitizers. Overall, RBC-PDT is expected to find wide applications in modern oncology.
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Affiliation(s)
- Wei Tang
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Zipeng Zhen
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Mengzhe Wang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA,
| | - Hui Wang
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA,
| | - Yen-Jun Chuang
- College of Engineering, University of Georgia, Athens, GA 30602, USA
| | - Weizhong Zhang
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Geoffrey D Wang
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Trever Todd
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Taku Cowger
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Hongmin Chen
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
| | - Lin Liu
- Department of Radiology, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, China
| | - Zibo Li
- Department of Radiology and Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA,
| | - Jin Xie
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA,
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Lanthanide-Doped Upconversion Nanoparticles for Imaging-Guided Drug Delivery and Therapy. SPRINGER SERIES IN BIOMATERIALS SCIENCE AND ENGINEERING 2016. [DOI: 10.1007/978-3-662-48544-6_4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Li Z, Zhang Y, La H, Zhu R, El-Banna G, Wei Y, Han G. Upconverting NIR Photons for Bioimaging. NANOMATERIALS 2015; 5:2148-2168. [PMID: 28347113 PMCID: PMC5304770 DOI: 10.3390/nano5042148] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 11/27/2015] [Indexed: 01/10/2023]
Abstract
Lanthanide-doped upconverting nanoparticles (UCNPs) possess uniqueanti-Stokes optical properties, in which low energy near-infrared (NIR) photons can beconverted into high energy UV, visible, shorter NIR emission via multiphoton upconversionprocesses. Due to the rapid development of synthesis chemistry, lanthanide-doped UCNPscan be fabricated with narrow distribution and tunable multi-color optical properties. Theseunique attributes grant them unique NIR-driven imaging/drug delivery/therapeuticapplications, especially in the cases of deep tissue environments. In this brief review, weintroduce both the basic concepts of and recent progress with UCNPs in material engineeringand theranostic applications in imaging, molecular delivery, and tumor therapeutics. The aimof this brief review is to address the most typical progress in basic mechanism, materialdesign as bioimaging tools.
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Affiliation(s)
- Zhanjun Li
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
| | - Yuanwei Zhang
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
| | - Hieu La
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
| | - Richard Zhu
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
| | - Ghida El-Banna
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Yuzou Wei
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
| | - Gang Han
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
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Mion G, Gianferrara T, Bergamo A, Gasser G, Pierroz V, Rubbiani R, Vilar R, Leczkowska A, Alessio E. Phototoxic Activity and DNA Interactions of Water-Soluble Porphyrins and Their Rhenium(I) Conjugates. ChemMedChem 2015; 10:1901-14. [PMID: 26332425 DOI: 10.1002/cmdc.201500288] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 08/13/2015] [Indexed: 12/12/2022]
Abstract
In the search for alternative photosensitizers for use in photodynamic therapy (PDT), herein we describe two new water-soluble porphyrins, a neutral fourfold-symmetric compound and a +3-charged tris-methylpyridinium derivative, in which either four or one [1,4,7]-triazacyclononane (TACN) units are connected to the porphyrin macrocycle through a hydrophilic linker; we also report their corresponding tetracationic Re(I) conjugates. The in vitro (photo)toxic effects of the compounds toward the human cell lines HeLa (cervical cancer), H460M2 (non-small-cell lung carcinoma), and HBL-100 (non-tumorigenic epithelial cells) are reported. Three of the compounds are not cytotoxic in the dark up to 100 μm, and the fourfold-symmetric couple revealed very good phototoxic indexes (PIs). The intracellular localization of all derivatives was studied in HeLa cells by confocal fluorescence microscopy. Although low nuclear localization was observed for some of them, it still prompted us to investigate their capacity to bind both quadruplex and duplex DNA; we observed significant selectivity in the tris-methylpyridinium derivatives for G-quadruplex interactions.
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Affiliation(s)
- Giuliana Mion
- Department of Chemical & Pharmaceutical Sciences, Università degli Studi di Trieste, P.le Europa 1, 34127, Trieste, Italy
| | - Teresa Gianferrara
- Department of Chemical & Pharmaceutical Sciences, Università degli Studi di Trieste, P.le Europa 1, 34127, Trieste, Italy.
| | - Alberta Bergamo
- Callerio Foundation Onlus, Via A. Fleming 22-31, 34127, Trieste, Italy
| | - Gilles Gasser
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland.
| | - Vanessa Pierroz
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Riccardo Rubbiani
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Ramon Vilar
- Department of Chemistry, Imperial College London, London, SW7 2AZ, UK.
| | - Anna Leczkowska
- Department of Chemistry, Imperial College London, London, SW7 2AZ, UK
| | - Enzo Alessio
- Department of Chemical & Pharmaceutical Sciences, Università degli Studi di Trieste, P.le Europa 1, 34127, Trieste, Italy
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Ding H, Lv Y, Ni D, Wang J, Tian Z, Wei W, Ma G. Erythrocyte membrane-coated NIR-triggered biomimetic nanovectors with programmed delivery for photodynamic therapy of cancer. NANOSCALE 2015; 7:9806-15. [PMID: 25962428 DOI: 10.1039/c5nr02470f] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
A new type of photodynamic therapy (PDT) agents using upconversion nanoparticles (UCNPs) with incorporated photosensitizers as the inner core and an erythrocyte membrane (RM) decorated with dual targeting moieties as the cloak is developed. Owing to the endogenous nature of RM, the RM-coating endows the PDT agents with perfect biocompatibility and stealth ability to escape from the entrapment by the reticulo-endothelial system (RES). More importantly, owing to the unique nature of erythrocyte as an oxygen carrier in the blood, the RM outer layer of the agents unequivocally facilitates the permeation of ground-state molecular oxygen ((3)O2) and the singlet oxygen ((1)O2) as compared to the previously developed PDT agents with other types of coating. Another salient feature of the as-prepared PDT platform is the decoration of RM with dual targeting moieties for selective recognition of cancer cells and mitochondrial targeting, respectively. The synergistic effect of RM coating and dual-targeting of such feature-packed agents are investigated in tumor-bearing mice and the improved PDT therapeutic efficacy is confirmed, which is the first paradigm where RM-coated NIR-triggered nanovectors with programmed delivery ability is applied in PDT of tumor in vivo.
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Affiliation(s)
- Hui Ding
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
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Leela S, Subashini A, Stoeckli-Evans H, Philip R, Ramamurthi K. WITHDRAWN: Crystal structure and nonlinear optical properties of centrosymmetric Schiff base material: 4-chloro-4’nitro bwenzylideneaniline. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Adamek M, Kawczyk-Krupka A, Mostowy A, Czuba Z, Krol W, Kasperczyk S, Jakobisiak M, Golab J, Sieron A. Topical ALA-PDT modifies neutrophils' chemiluminescence, lymphocytes' interleukin-1beta secretion and serum level of transforming growth factor beta1 in patients with nonmelanoma skin malignancies A clinical study. Photodiagnosis Photodyn Ther 2014; 2:65-72. [PMID: 25048558 DOI: 10.1016/s1572-1000(05)00004-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2004] [Revised: 01/07/2005] [Accepted: 01/11/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND Photodynamic therapy (PDT) has been recognized as a noninvasive therapeutic approach for the effective treatment of tumors. It has been shown in studies conducted on malignant cell lines and various animal tumor models, that the interaction of photosensitizing substances with light leads to the release of cytotoxic substances and stimulates the immune response. PURPOSE The aim of our study was to analyze the immune system response in patients undergoing photodynamic therapy due to basal cell carcinoma (BCC). METHODS Patients with skin malignancies have been treated by 10% delta-aminolevulinic acid (ALA) (Medac GmbH, Wedel, Germany) topically and light from a diode laser. Blood samples were obtained from each patient twice in the same day: before and 4h after photodynamic treatment procedure. In patients' serum the concentration of transforming growth factor beta1 (TGF-β1) was determined. Additionally the study has been conducted on lymphocytes and granulocytes from peripheral blood. In cell culture supernatants the concentration of interleukin 1beta (IL-1β), interleukin 2 (IL-2), interleukin 6 (IL-6), tumor necrosis factor alpha (TNFα), the percentile composition of patients' lymphocytes and the chemiluminescence of neutrophils have been measured. RESULTS We have observed a significant increase (p=0.015) in the intensity of the neutrophil chemiluminescence and significant diminution (p=0.006) of IL-1β concentration in supernatants. Similarly the serum level of TGF-β1 has been significantly decreased (p<0.001). CONCLUSION It is very likely that human immune system activity is modified by topical ALA-PDT and may potentially contribute to its final outcome.
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Affiliation(s)
- Mariusz Adamek
- Center for Laser Diagnostics and Therapy, Chair and Clinic of Internal Diseases and Physical Medicine, Silesian Medical University, 15 Batory St., PL-41902 Bytom, Poland
| | - Aleksandra Kawczyk-Krupka
- Center for Laser Diagnostics and Therapy, Chair and Clinic of Internal Diseases and Physical Medicine, Silesian Medical University, 15 Batory St., PL-41902 Bytom, Poland
| | - Aleksandra Mostowy
- Department of Microbiology and Immunology, Silesian Medical University, 19 Jordana St., PL-41808 Zabrze-Rokitnica, Poland
| | - Zenon Czuba
- Department of Microbiology and Immunology, Silesian Medical University, 19 Jordana St., PL-41808 Zabrze-Rokitnica, Poland
| | - Wojciech Krol
- Department of Microbiology and Immunology, Silesian Medical University, 19 Jordana St., PL-41808 Zabrze-Rokitnica, Poland
| | - Slawomir Kasperczyk
- Department of Biochemistry, Silesian Medical University, 19 Jordana St., PL-41808 Zabrze-Rokitnica, Poland
| | - Marek Jakobisiak
- Department of Immunology, Center of Biostructure Research, The Medical University of Warsaw, Chalubinskiego 5, PL-02004 Warsaw, Poland
| | - Jakub Golab
- Department of Immunology, Center of Biostructure Research, The Medical University of Warsaw, Chalubinskiego 5, PL-02004 Warsaw, Poland
| | - Aleksander Sieron
- Center for Laser Diagnostics and Therapy, Chair and Clinic of Internal Diseases and Physical Medicine, Silesian Medical University, 15 Batory St., PL-41902 Bytom, Poland
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Zhen Z, Tang W, Chuang YJ, Todd T, Zhang W, Lin X, Niu G, Liu G, Wang L, Pan Z, Chen X, Xie J. Tumor vasculature targeted photodynamic therapy for enhanced delivery of nanoparticles. ACS NANO 2014; 8:6004-13. [PMID: 24806291 PMCID: PMC4076019 DOI: 10.1021/nn501134q] [Citation(s) in RCA: 181] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 05/07/2014] [Indexed: 05/18/2023]
Abstract
Delivery of nanoparticle drugs to tumors relies heavily on the enhanced permeability and retention (EPR) effect. While many consider the effect to be equally effective on all tumors, it varies drastically among the tumors' origins, stages, and organs, owing much to differences in vessel leakiness. Suboptimal EPR effect represents a major problem in the translation of nanomedicine to the clinic. In the present study, we introduce a photodynamic therapy (PDT)-based EPR enhancement technology. The method uses RGD-modified ferritin (RFRT) as "smart" carriers that site-specifically deliver (1)O2 to the tumor endothelium. The photodynamic stimulus can cause permeabilized tumor vessels that facilitate extravasation of nanoparticles at the sites. The method has proven to be safe, selective, and effective. Increased tumor uptake was observed with a wide range of nanoparticles by as much as 20.08-fold. It is expected that the methodology can find wide applications in the area of nanomedicine.
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Affiliation(s)
- Zipeng Zhen
- Department of Chemistry, University, of Georgia, Athens, Georgia 30602, United States
| | - Wei Tang
- Department of Chemistry, University, of Georgia, Athens, Georgia 30602, United States
| | - Yen-Jun Chuang
- Department of Physics, University of Georgia, Athens, Georgia 30602, United States
| | - Trever Todd
- Department of Chemistry, University, of Georgia, Athens, Georgia 30602, United States
| | - Weizhong Zhang
- Department of Chemistry, University, of Georgia, Athens, Georgia 30602, United States
| | - Xin Lin
- National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20852, United States
| | - Gang Niu
- National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20852, United States
| | - Gang Liu
- Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China
| | - Lianchun Wang
- Department of Biochemistry and Complex Carbohydrate Research Center (CCRC), University of Georgia, Athens, Georgia 30602, United States
| | - Zhengwei Pan
- Department of Physics, University of Georgia, Athens, Georgia 30602, United States
| | - Xiaoyuan Chen
- National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20852, United States
| | - Jin Xie
- Department of Chemistry, University, of Georgia, Athens, Georgia 30602, United States
- Bio-Imaging Research Center (BIRC), University of Georgia, Athens, Georgia 30602, United States
- Address correspondence to
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Gieseking RL, Mukhopadhyay S, Risko C, Marder SR, Brédas JL. 25th anniversary article: Design of polymethine dyes for all-optical switching applications: guidance from theoretical and computational studies. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:68-83. [PMID: 24302357 DOI: 10.1002/adma.201302676] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 07/29/2013] [Indexed: 06/02/2023]
Abstract
All-optical switching--controlling light with light--has the potential to meet the ever-increasing demand for data transmission bandwidth. The development of organic π-conjugated molecular materials with the requisite properties for all-optical switching applications has long proven to be a significant challenge. However, recent advances demonstrate that polymethine dyes have the potential to meet the necessary requirements. In this review, we explore the theoretical underpinnings that guide the design of π-conjugated materials for all-optical switching applications. We underline, from a computational chemistry standpoint, the relationships among chemical structure, electronic structure, and optical properties that make polymethines such promising materials.
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Affiliation(s)
- Rebecca L Gieseking
- School of Chemistry and Biochemistry Center for Organic Photonics and Electronics and Center for Organic Materials for All-Optical Switching, Georgia Institute of Technology, Atlanta, Georgia, 30332-0400, USA
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Rationale and mechanism for the low photoinactivation rate of bacteria in plasma. Proc Natl Acad Sci U S A 2013; 111:33-8. [PMID: 24368851 DOI: 10.1073/pnas.1315053111] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The rate of bacterial photoinactivation in plasma by methylene blue (MB), especially for Gram-negative bacteria, has been reported to be lower, by about an order of magnitude, than the rate of inactivation in PBS and water solutions. This low inactivation rate we attribute to the bleaching of the 660-nm absorption band of MB in plasma that results in low yields of MB triplet states and consequently low singlet oxygen generation. We have recorded the change of the MB 660-nm-band optical density in plasma, albumin, and cysteine solutions, as a function of time, after 661-nm excitation. The transient triplet spectra were recorded and the singlet oxygen generated in these solutions was determined by the rate of decrease in the intensity of the 399-nm absorption band of 9, 10-anthracene dipropionic acid. We attribute the bleaching of MB, low singlet oxygen yield, and consequently the low inactivation rate of bacteria in plasma to the attachment of a hydrogen atom, from the S-H group of cysteine, to the central nitrogen atom of MB and formation of cysteine dimer.
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Liu KH, Wang CP, Chang MF, Chung YW, Lou PJ, Lin JH. Molecular characterization of photosensitizer-mediated photodynamic therapy by gene expression profiling. Hum Exp Toxicol 2013; 33:629-37. [PMID: 24064908 DOI: 10.1177/0960327113485257] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Photodynamic therapy (PDT) is a novel cancer treatment based on the tumor-specific accumulation of a photosensitizer followed by irradiation with visible light, which induces selective tumor cell death via production of reactive oxygen species. To elucidate the underlying mechanisms, microarray analysis was used to analyze the changes in gene expression patterns during PDT induced by various photosensitizers. Cancer cells were subjected to four different photosensitizer-mediated PDT and the resulting gene expression profiles were compared. We identified many differentially expressed genes reported previously as well as new genes for which the functionfunctions in PDT are still unclear. Our current results not only advance the general understanding of PDT but also suggest that distinct molecular mechanisms are involved in different photosensitizer-mediated PDT. Elucidating the signaling mechanisms in PDT will provide information to modulate the antitumor effectiveness of PDT using various photosensitizers.
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Affiliation(s)
- K-H Liu
- Department of Biotechnology, Chia Nan University of Pharmacy and Science, Tainan, Taiwan
| | - C-P Wang
- Department of Otolaryngology, College of Medicine, National Taiwan University Hospital and National Taiwan University, Taipei, Taiwan
| | - M-F Chang
- Biomedical Engineering Center, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - Y-W Chung
- Biomedical Engineering Center, Industrial Technology Research Institute, Hsinchu, Taiwan
| | - P-J Lou
- Department of Otolaryngology, College of Medicine, National Taiwan University Hospital and National Taiwan University, Taipei, Taiwan
| | - J-H Lin
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
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Zhen Z, Tang W, Guo C, Chen H, Lin X, Liu G, Fei B, Chen X, Xu B, Xie J. Ferritin nanocages to encapsulate and deliver photosensitizers for efficient photodynamic therapy against cancer. ACS NANO 2013; 7:6988-96. [PMID: 23829542 PMCID: PMC3819164 DOI: 10.1021/nn402199g] [Citation(s) in RCA: 163] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Photodynamic therapy is an emerging treatment modality that is under intensive preclinical and clinical investigations for many types of disease including cancer. Despite the promise, there is a lack of a reliable drug delivery vehicle that can transport photosensitizers (PSs) to tumors in a site-specific manner. Previous efforts have been focused on polymer- or liposome-based nanocarriers, which are usually associated with a suboptimal PS loading rate and a large particle size. We report herein that a RGD4C-modified ferritin (RFRT), a protein-based nanoparticle, can serve as a safe and efficient PS vehicle. Zinc hexadecafluorophthalocyanine (ZnF16Pc), a potent PS with a high (1)O2 quantum yield but poor water solubility, can be encapsulated into RFRTs with a loading rate as high as ~60 wt % (i.e., 1.5 mg of ZnF16Pc can be loaded on 1 mg of RFRTs), which far exceeds those reported previously. Despite the high loading, the ZnF16Pc-loaded RFRTs (P-RFRTs) show an overall particle size of 18.6 ± 2.6 nm, which is significantly smaller than other PS-nanocarrier conjugates. When tested on U87MG subcutaneous tumor models, P-RFRTs showed a high tumor accumulation rate (tumor-to-normal tissue ratio of 26.82 ± 4.07 at 24 h), a good tumor inhibition rate (83.64% on day 12), as well as minimal toxicity to the skin and other major organs. This technology can be extended to deliver other metal-containing PSs and holds great clinical translation potential.
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Affiliation(s)
- Zipeng Zhen
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
- Bio-Imaging Research Center (BIRC), University of Georgia, Athens, Georgia 30602, United States
| | - Wei Tang
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
- Bio-Imaging Research Center (BIRC), University of Georgia, Athens, Georgia 30602, United States
| | - Cunlan Guo
- Department of Physics, University of Georgia, Athens, Georgia 30602, United States
| | - Hongmin Chen
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
- Bio-Imaging Research Center (BIRC), University of Georgia, Athens, Georgia 30602, United States
| | - Xin Lin
- National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20852, United States
| | - Gang Liu
- Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
- State Key Laboratory of Cellular Stress Biology and School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Baowei Fei
- Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, Georgia 30329, United States
| | - Xiaoyuan Chen
- National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20852, United States
| | - Binqian Xu
- Department of Physics, University of Georgia, Athens, Georgia 30602, United States
| | - Jin Xie
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
- Bio-Imaging Research Center (BIRC), University of Georgia, Athens, Georgia 30602, United States
- Address correspondence to:
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Shen J, Zhao L, Han G. Lanthanide-doped upconverting luminescent nanoparticle platforms for optical imaging-guided drug delivery and therapy. Adv Drug Deliv Rev 2013; 65:744-55. [PMID: 22626980 DOI: 10.1016/j.addr.2012.05.007] [Citation(s) in RCA: 179] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 05/14/2012] [Accepted: 05/14/2012] [Indexed: 12/11/2022]
Abstract
Lanthanide-doped upconverting luminescent nanoparticles (UCNPs) are promising materials for optical imaging-guided drug delivery and therapy due to their unique optical and chemical properties. UCNPs absorb low energy near-infrared (NIR) light and emit high-energy shorter wavelength photons. Their special features allow them to overcome various problems associated with conventional imaging probes and to provide versatility for creating nanoplatforms with both imaging and therapeutic modalities. Here, we discuss several approaches to fabricate and utilize UCNPs for traceable drug delivery and therapy.
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Affiliation(s)
- Jie Shen
- Biochemistry and Molecular Pharmacology Department, University of Massachusetts-Medical School, 364 Plantation Street, LRB 806, Worcester, MA 01605, USA
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37
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Huang X, Tian XJ, Yang WL, Ehrenberg B, Chen JY. The conjugates of gold nanorods and chlorin e6 for enhancing the fluorescence detection and photodynamic therapy of cancers. Phys Chem Chem Phys 2013; 15:15727-33. [PMID: 23575880 DOI: 10.1039/c3cp44227f] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold nanorods (AuNRs) were conjugated with chlorin e6 (Ce6), a commonly used photosensitizer, to form AuNRs-Ce6 by electrostatic binding. Due to the strong surface plasmon resonance coupling, the fluorescence of conjugated Ce6 was enhanced 3-fold and the production of singlet oxygen was increased 1.4-fold. AuNRs-Ce6 were taken up by the HeLa and KB cell lines more easily than free Ce6, enhancing the intracellular delivery of Ce6. The increased cellular amount of Ce6 leads to a 3-fold more efficient photodynamic killing of these two cell lines. This demonstrates the potential of this approach to improve photodynamic detection and therapy of cancers.
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Affiliation(s)
- Xiao Huang
- State Key Laboratory of Surface Physics and Department of Physics and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Fudan University, 220, Handan Road, Shanghai 200433, China.
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Abstract
According to recent advances in nanotechnology, various nano-sized formulations have been designed for the application in biomedical fields, including diagnosis, drug delivery, and therapeutics. The nanotechnology-based formulations have a great merit in the design of multifunctional platform for the biomedical applications. Therefore, recent trends in nanotechnology are moving onto the combination of nanotechnology and conventional therapeutic. Typically, photodynamic therapy (PDT) is one of promising techniques for the combination with nanotechnology owing to its less invasiveness. In this paper, we are going to briefly review recent advances in nanotechnology-based PDT, including selective delivery and excitation of photosensitizers, combination therapy, and multifunctional PDT.
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Affiliation(s)
- Hee-Jae Yoon
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
| | - Woo-Dong Jang
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
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39
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On the electronic spectra and optical properties of [(η5-C5H5)(L)2M(GaMe2)] complexes (M = Fe, Ru, Os; L = CO, PMe3): A theoretical approach. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.07.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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40
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Durbec M, Cosmidis A, Fuchsmann C, Ramade A, Céruse P. Efficacy and safety of photodynamic therapy with temoporfin in curative treatment of recurrent carcinoma of the oral cavity and oropharynx. Eur Arch Otorhinolaryngol 2012; 270:1433-9. [PMID: 22927020 DOI: 10.1007/s00405-012-2083-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 06/06/2012] [Indexed: 12/21/2022]
Abstract
Therapeutic options for recurrent carcinoma of the upper aérodigestive tract (UADT) are limited. The prognosis of these tumours remains poor with significant rate of recurrence and a lower median survival time. Photodynamic therapy (PDT) is a relatively new therapeutic alternative which combines the use of a photosensitising agent and light to induce a cytotoxic effect on the tissues. This is a retrospective single-centre study carried out in patients with a recurrence of an oral cavity or oropharyngeal carcinoma or a second appearance of tumour in a previously irradiated area. There were no metastases in lymph nodes or other organs. Laser treatment was carried out 96 h after temoporfin (Foscan(®)) injection. In our series we had 14 cases with a complete response, 1 partial response. Overall survival at 1 year was 72 % and 36 % at 5 years. Disease-specific survival at 1 year was 82 % and 45 % at 5 years. Recurrence-free survival at 1 year was 52 % and 34 % at 5 years. Side effects mainly described are pain in the area of illumination, well controlled. PDT with Foscan(®) gives useful results in terms of survival and improvement in quality of life with few adverse events or severe complications. The fact that it has low toxicity and that treatment sessions can be repeated mean it should be considered in the therapeutic armamentarium for recurrent carcinoma of the UADT.
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Affiliation(s)
- M Durbec
- ENT Department, Hospices Civils de Lyon, Centre hospitalier Lyon Sud, Pierre-Bénite Cedex, France.
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RUCKER NATALIE, FERRARIO ANGELA, GOMER CHARLESJ. Constitutive overexpression of HSP-70 in thermal resistant tumor cells does not alter sensitivity to porphyrin-, chlorin-, or purpurin-mediated PDT. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1002/jpp.322] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Cellular expression of the 70 kDa heat shock protein (HSP-70) is observed following hyperthermia and is correlated with transient resistance to subsequent heating. Photodynamic therapy (PDT) mediated oxidative stress can also induce transcriptional and translational expression of a variety of genes including HSP-70. However, PDT-mediated HSP-70 expression can vary as a function of photosensitizer type and incubation conditions. In the current study we used three clinically relevant photosensitizers, a porphyrin (Photofrin), a purpurin (SnET2), and a chlorin (NPe6), to examine PDT-mediated HSP-70 expression profiles and photosensitivity characteristics in parental radiation-induced fibrosarcoma cells (RIF-1) and in thermal resistant RIF-1 clones. We observed that in vitro PDT treatments using either SnET2 or NPe6 induced HSP-70 expression but that comparable PDT treatments using Photofrin did not result in increased HSP-70 levels. We also observed that PDT sensitivity in parental and heat-resistant cell clones were similar for each photosensitizer while thermal sensitivity was significantly reduced in the RIF clones which constitutively overexpressed HSP-70. These results indicate that definable differences can exist in the molecular pathways induced by PDT for different photosensitizers. Our results also demonstrate that constitutive overexpression of HSP-70 does not modulate PDT photosensitivity regardless of whether PDT treatments induce HSP-70 expression. We conclude that HSP-70 expression does not play a significant role in cellular PDT photosensitivity.
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Affiliation(s)
- NATALIE RUCKER
- Clayton Center for Ocular Oncology, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA
| | - ANGELA FERRARIO
- Clayton Center for Ocular Oncology, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA
| | - CHARLES J. GOMER
- Clayton Center for Ocular Oncology, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA
- Departments of Pediatrics, Radiation Oncology, and Molecular Pharmacology & Toxicology, University of Southern California, Los Angeles, CA 90027, USA
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MODY TARAKD, SESSLER JONATHANL. Texaphyrins: a new approach to drug development. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1002/jpp.326] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The texaphyrins are prototypical metal-coordinating expanded porphyrins. They represent a burgeoning class of pharmacological agents that show promise for an array of medical applications. Currently, two different water-soluble lanthanide texaphyrins, namely motexafin gadolinium ( Gd-Tex , 1) and motexafin lutetium ( Lu-Tex , 2), are involved in multi-center clinical trials for a variety of indications. The first of these agents, XCYTRIN® (motexafin gadolinium) Injection, is being evaluated as a potential X-ray radiation enhancer in a randomized Phase III clinical trial in patients with brain metastases. The second, in various formulations, is being evaluated as a photosensitizer for use in: (i) the photodynamic treatment of recurrent breast cancer (LUTRIN® Injection; now in Phase IIb clinical trials); (ii) photoangioplastic reduction of atherosclerosis involving peripheral and coronary arteries (ANTRIN® Injection; now in Phase II and Phase I clinical trials, respectively); and (iii) light-based age-related macular degeneration (OPTRIN™ Injection; currently under Phase II clinical evaluation), a vision-threatening disease of the retina. In this article, these developments, along with fundamental aspects of the underlying chemistry are reviewed.
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Affiliation(s)
- TARAK D. MODY
- Pharmacyclics, Inc., 995 East Arques Avenue, Sunnyvale, CA 94085, USA
| | - JONATHAN L. SESSLER
- Department of Chemistry & Biochemistry, University of Texas at Austin, Austin, TX 78712, USA
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Abstract
The current state of pharmaceutical development of porphyrin-type macrocycles in medicine is highlighted. Currently, several porphyrinoid-based drugs are under various stages of development as phototherapeutic agents, X-ray radiation enhancers and boron neutron capture agents. These compounds represent a burgeoning class of pharmacological agents that are potentially useful in an array of treatment areas.
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Affiliation(s)
- TARAK D. MODY
- Pharmacyclics, Inc., 995 East Arques Avenue, Sunnyvale, CA 94086, USA
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44
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GAVALDA ANA, BORRELL JOSÉI, TEIXIDO JORDI, NONELL SANTIAGO, ARAD OFIR, GRAU ROSER, CAÑETE MAGDALENA, JUARRANZ ANGELES, VILLANUEVA ANGELES, STOCKERT JUANC. A non-tetradecarboxylative synthesis of 2,7,12,17-tetraphenylporphycene. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1002/jpp.552] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A new synthetic method for 2,7,12,17-tetraphenylporphycene (2e, TPPo) which avoids tetradecarboxylation by sublimation of the intermediate tetracarboxylic acid 8 is reported. Thus, the use of a pyrrol 13a bearing two orthogonal ester groups allows the synthesis of bipyrrol 12a, from which the benzyl ester groups are selectively removed to afford diester 11. The latter is transformed to dialdehyde 10 by using the McFayden–Stevens reaction, thus avoiding the unstable bipyrrol 9 formed during the tetradecarboxylation of 8.
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Affiliation(s)
- ANA GAVALDA
- Grup d'Enginyeria Molecular, Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta, 390, E-08017 Barcelona, Spain
| | - JOSÉ I. BORRELL
- Grup d'Enginyeria Molecular, Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta, 390, E-08017 Barcelona, Spain
| | - JORDI TEIXIDO
- Grup d'Enginyeria Molecular, Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta, 390, E-08017 Barcelona, Spain
| | - SANTIAGO NONELL
- Grup d'Enginyeria Molecular, Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta, 390, E-08017 Barcelona, Spain
| | - OFIR ARAD
- Grup d'Enginyeria Molecular, Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta, 390, E-08017 Barcelona, Spain
| | - ROSER GRAU
- Grup d'Enginyeria Molecular, Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta, 390, E-08017 Barcelona, Spain
| | - MAGDALENA CAÑETE
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain
| | - ANGELES JUARRANZ
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain
| | - ANGELES VILLANUEVA
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain
| | - JUAN C. STOCKERT
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain
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Wang Z, Li J, Wang J, Zou M, Wang S, Li Y, Kong Y, Xia L. Spectrometry researches on interaction and sonodynamic damage of riboflavin (RF) to bovine serum albumin (BSA). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 87:1-10. [PMID: 22154267 DOI: 10.1016/j.saa.2011.11.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2011] [Revised: 11/02/2011] [Accepted: 11/09/2011] [Indexed: 05/31/2023]
Abstract
In this paper, the riboflavin (RF) was used to study the interaction and sonodynamic damage to bovine serum albumin (BSA) by fluorescence and UV-vis spectroscopy. The results showed that the RF could efficiently bind to BSA in aqueous solution. Under ultrasonic irradiation, the RF could obviously damage the BSA. In addition, synchronous fluorescence spectroscopy revealed that the RF showed more accessible to tryptophan (Trp) residues than to tyrosine (Tyr) residues. Also, it damaged Trp residues more seriously than Tyr residues under ultrasonic irradiation. At last, the generation of reactive oxygen species (ROS) in sonodynamic process was estimated by the method of Oxidation-Extraction Spectrometry (OES). And then, several radical scavengers were used to determine the kind of ROS. It was found that at least the singlet oxygen ((1)O(2)) and hydroxyl radicals (*OH) were generated.
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Affiliation(s)
- Zhiqiu Wang
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
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Disulfide crosslinked polyion complex micelles encapsulating dendrimer phthalocyanine directed to improved efficiency of photodynamic therapy. J Control Release 2011; 155:449-57. [DOI: 10.1016/j.jconrel.2011.06.019] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 06/03/2011] [Accepted: 06/06/2011] [Indexed: 01/01/2023]
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Karthikeyan K, Babu A, Kim SJ, Murugesan R, Jeyasubramanian K. Enhanced photodynamic efficacy and efficient delivery of Rose Bengal using nanostructured poly(amidoamine) dendrimers: potential application in photodynamic therapy of cancer. Cancer Nanotechnol 2011; 2:95-103. [PMID: 26069488 PMCID: PMC4451631 DOI: 10.1007/s12645-011-0019-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Accepted: 07/27/2011] [Indexed: 11/30/2022] Open
Abstract
Photodynamic therapy (PDT) is a promising treatment methodology whereby diseased cells and tissues are destroyed by reactive oxygen species (ROS) by using a combination of light and photosensitizers (PS). The medical application of Rose Bengal (RB), photosensitizer with very good ROS generation capability, is limited due to its intrinsic toxicity and insufficient lipophilicity. In this report, we evaluate the potential of polyamidoamine (PAMAM) dendrimers in delivering RB and its phototoxic efficiency towards a model cancer cell line. The spherical, nanoscaled dendrimers could efficiently encapsulate RB and showed characteristic spectral responses. The controlled release property of dendrimer-RB formulation was clearly evident from the in vitro drug release study. ROS generation was confirmed in dendrimer-RB system upon white light illumination. Photosensitization of Dalton's Lymphoma Ascite (DLA) cells incubated with dendrimer-RB formulation caused remarkable photocytotoxicity. Importantly, the use of dendrimer-based delivery system reduced the dark toxicity of RB.
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Affiliation(s)
- Krishnamoorthy Karthikeyan
- Nanomaterials and System Laboratory, Department of Mechanical Engineering, Jeju National University, Jeju, South Korea ; Department of Nanoscience and Technology, Mepco Schlenk Engineering College, Sivakasi, Tamilnadu India
| | - Anish Babu
- School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamilnadu India
| | - Sang-Jae Kim
- Nanomaterials and System Laboratory, Department of Mechanical Engineering, Jeju National University, Jeju, South Korea
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48
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Comparison between laser-induced photoemissions and phototransmission of hard tissues using fibre-coupled Nd:YAG and Er3+-doped fibre lasers. Lasers Med Sci 2011; 27:767-75. [DOI: 10.1007/s10103-011-0978-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2010] [Accepted: 07/25/2011] [Indexed: 10/17/2022]
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Tan IB, Dolivet G, Ceruse P, Vander Poorten V, Roest G, Rauschning W. Temoporfin-mediated photodynamic therapy in patients with advanced, incurable head and neck cancer: A multicenter study. Head Neck 2011; 32:1597-604. [PMID: 20848401 DOI: 10.1002/hed.21368] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND The aim of this study was to confirm the efficacy of temoporfin (Foscan)-mediated photodynamic therapy (PDT) in patients with end-stage head and neck squamous cell carcinoma (HNSCC). METHODS Thirty-nine patients with recurring HNSCC lesions ≤10 mm in depth were injected with temoporfin, followed by illumination of the tumor surface. RESULTS Of 39 treated patients, 19 achieved complete response, 2 partial response, 5 stable disease, 5 had progressive disease, and 8 patients were nonevaluable. Thus, in the per-protocol analysis, the response rate was 68%. Of the treated patients 54% had a response. Median survival was significantly longer for responders (37 months) than for nonresponders (7.4 months). Nine patients were alive at 3.7 to 6.5 years (median, 4.8 years) post-treatment, 7 free of disease. No major toxicities were observed. CONCLUSIONS Patients with advanced HNSCC with lesions ≤10 mm in depth, who have exhausted other treatment options, can achieve significant local control and survival benefit from temoporfin-mediated PDT.
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Affiliation(s)
- Ing Bing Tan
- The Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands.
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Chen J, Cesario TC, Rentzepis PM. Effect of pH on Methylene Blue Transient States and Kinetics and Bacteria Photoinactivation. J Phys Chem A 2011; 115:2702-7. [DOI: 10.1021/jp110215g] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jie Chen
- Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics, Shanghai Jiao Tong University, Shanghai, 200240, China
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