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Belashov AV, Zhikhoreva AA, Salova AV, Belyaeva TN, Litvinov IK, Kornilova ES, Semenova IV, Vasyutinskii OS. Automatic segmentation of lysosomes and analysis of intracellular pH with Radachlorin photosensitizer and FLIM. Biochem Biophys Res Commun 2024; 710:149835. [PMID: 38574457 DOI: 10.1016/j.bbrc.2024.149835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/17/2024] [Accepted: 03/25/2024] [Indexed: 04/06/2024]
Abstract
We report application of the fluorescence lifetime imaging microscopy (FLIM) for analysis of distributions of intracellular acidity using a chlorin-e6 based photosensitizer Radachlorin. An almost two-fold increase of the photosensitizer fluorescence lifetime in alkaline microenvironments as compared to acidic ones allowed for clear distinguishing between acidic and alkaline intracellular structures. Clusterization of a phasor plot calculated from fits of the FLIM raw data by two Gaussian distributions provided accurate automatic segmentation of lysosomes featuring acidic contents. The approach was validated in colocalization experiments with LysoTracker fluorescence in living cells of four established lines. The dependence of photosensitizer fluorescence lifetime on microenvironment acidity allowed for estimation of pH inside the cells, except for the nuclei, where photosensitizer does not penetrate. The developed method is promising for combined application of the photosensitizer for both photodynamic treatment and diagnostics.
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Affiliation(s)
- A V Belashov
- Ioffe Institute, Russian Academy of Sciences, 26, Polytekhnicheskaya, St.Petersburg, 194021, Russia
| | - A A Zhikhoreva
- Ioffe Institute, Russian Academy of Sciences, 26, Polytekhnicheskaya, St.Petersburg, 194021, Russia
| | - A V Salova
- Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Pr., 4, St. Petersburg, 194064, Russia
| | - T N Belyaeva
- Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Pr., 4, St. Petersburg, 194064, Russia
| | - I K Litvinov
- Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Pr., 4, St. Petersburg, 194064, Russia
| | - E S Kornilova
- Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Pr., 4, St. Petersburg, 194064, Russia
| | - I V Semenova
- Ioffe Institute, Russian Academy of Sciences, 26, Polytekhnicheskaya, St.Petersburg, 194021, Russia.
| | - O S Vasyutinskii
- Ioffe Institute, Russian Academy of Sciences, 26, Polytekhnicheskaya, St.Petersburg, 194021, Russia
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Belashov AV, Zhikhoreva AA, Gorbunova IA, Sasin ME, Semenova IV, Vasyutinskii OS. Photophysical, rotational and translational properties of Radachlorin photosensitizer upon binding to serum albumins. Biochim Biophys Acta Gen Subj 2024; 1868:130546. [PMID: 38141885 DOI: 10.1016/j.bbagen.2023.130546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/12/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
INTRODUCTION Although photophysical properties of Radachlorin photosensitizer (PS) were extensively studied in solutions and cells, no data is available on variations of its characteristics upon binding to serum albumins, which are major transporters in blood and nutrients in cell culture media. OBJECTIVES The primary objective of this study was to analyze changes in photophysical properties of Radachlorin molecules upon their binding to human and bovine serum albumins at different microenvironment properties. METHODS Experiments were performed using time-resolved fluorescence spectroscopy and fluorescence recovery after photobleaching. Variations in fluorescence spectra and lifetime, fluorescence anisotropy, rotational and translational diffusion of PS molecules upon binding to albumins were studied in normal, basic and acidic conditions and at different concentrations of albumin and PS molecules. RESULTS Radachlorin molecules effectively bind to both types of serum albumins, which causes changes in photophysical properties of the PS. A minor red shift of the fluorescence spectrum, an increase in fluorescence lifetime and anisotropy and substantial decrease of translational and rotational mobility of PS molecules were observed upon their binding to albumins. The analysis of rotational diffusion time provided robust evaluation of the bound fraction of PS molecules. Both the highly acidic microenvironment and increase in alcohol concentration above 40% resulted in detachment of PS molecules from albumins. Photophysical properties of Radachlorin in complexes with BSA and HSA were found to be slightly different. CONCLUSIONS Binding of Radachlorin photosensitizer to either BSA or HSA affects significantly its photophysical properties, which may also vary with microenvironment acidity and alcohol concentration.
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Affiliation(s)
- A V Belashov
- Ioffe Institute, 26, Polytekhnicheskaya, St.Petersburg 194021, Russia
| | - A A Zhikhoreva
- Ioffe Institute, 26, Polytekhnicheskaya, St.Petersburg 194021, Russia
| | - I A Gorbunova
- Ioffe Institute, 26, Polytekhnicheskaya, St.Petersburg 194021, Russia
| | - M E Sasin
- Ioffe Institute, 26, Polytekhnicheskaya, St.Petersburg 194021, Russia
| | - I V Semenova
- Ioffe Institute, 26, Polytekhnicheskaya, St.Petersburg 194021, Russia.
| | - O S Vasyutinskii
- Ioffe Institute, 26, Polytekhnicheskaya, St.Petersburg 194021, Russia
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Dissecting the Interactions between Chlorin e6 and Human Serum Albumin. Molecules 2023; 28:molecules28052348. [PMID: 36903592 PMCID: PMC10005744 DOI: 10.3390/molecules28052348] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/28/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
Chlorin e6 (Ce6) is among the most used sensitizers in photodynamic (PDT) and sonodynamic (SDT) therapy; its low solubility in water, however, hampers its clinical exploitation. Ce6 has a strong tendency to aggregate in physiological environments, reducing its performance as a photo/sono-sensitizer, as well as yielding poor pharmacokinetic and pharmacodynamic properties. The interaction of Ce6 with human serum albumin (HSA) (i) governs its biodistribution and (ii) can be used to improve its water solubility by encapsulation. Here, using ensemble docking and microsecond molecular dynamics simulations, we identified the two Ce6 binding pockets in HSA, i.e., the Sudlow I site and the heme binding pocket, providing an atomistic description of the binding. Comparing the photophysical and photosensitizing properties of Ce6@HSA with respect to the same properties regarding the free Ce6, it was observed that (i) a red-shift occurred in both the absorption and emission spectra, (ii) a maintaining of the fluorescence quantum yield and an increase of the excited state lifetime was detected, and (iii) a switch from the type II to the type I mechanism in a reactive oxygen species (ROS) production, upon irradiation, took place.
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Bae I, Kim TG, Kim T, Kim D, Kim DH, Jo J, Lee YJ, Jeong YI. Phenethyl Isothiocyanate-Conjugated Chitosan Oligosaccharide Nanophotosensitizers for Photodynamic Treatment of Human Cancer Cells. Int J Mol Sci 2022; 23:13802. [PMID: 36430279 PMCID: PMC9693342 DOI: 10.3390/ijms232213802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/02/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022] Open
Abstract
The aim of this study is to synthesize phenethyl-conjugated chitosan oligosaccharide (COS) (abbreviated as ChitoPEITC) conjugates and then fabricate chlorin E6 (Ce6)-incorporated nanophotosensitizers for photodynamic therapy (PDT) of HCT-116 colon carcinoma cells. PEITC was conjugated with the amine group of COS. Ce6-incorporated nanophotosensitizers using ChitoPEITC (ChitoPEITC nanophotosensitizers) were fabricated by dialysis method. 1H nuclear magnetic resonance (NMR) spectra showed that specific peaks of COS and PEITC were observed at ChitoPEITC conjugates. Transmission electron microscope (TEM) confirmed that ChitoPEITC nanophotosensitizers have spherical shapes with small hydrodynamic diameters less than 200 nm. The higher PEITC contents in the ChitoPEITC copolymer resulted in a slower release rate of Ce6 from nanophotosensitizers. Furthermore, the higher Ce6 contents resulted in a slower release rate of Ce6. In cell culture study, ChitoPEITC nanophotosensitizers showed low toxicity against normal CCD986Sk human skin fibroblast cells and HCT-116 human colon carcinoma cells in the absence of light irradiation. ChitoPEITC nanophotosensitizers showed a significantly higher Ce6 uptake ratio than that of free Ce6. Under light irradiation, cellular reactive oxygen species (ROS) production of nanophotosensitizers was significantly higher than that of free Ce6. Especially, PEITC and/or ChitoPEITC themselves contributed to the production of cellular ROS regardless of light irradiation. ChitoPEITC nanophotosensitizers showed significantly higher PDT efficacy against HCT-116 cells than that of free Ce6. These results indicate that ChitoPEITC nanophotosensitizers have superior potential in Ce6 uptake, ROS production and PDT efficacy. In the HCT-116 cell-bearing mice tumor-xenograft model, ChitoPEITC nanophotosensitizers efficiently inhibited growth of tumor volume rather than free Ce6. In the animal imaging study, ChitoPEITC nanophotosensitizers were concentrated in the tumor tissue, i.e., fluorescence intensity in the tumor tissue was stronger than that of other tissues. We suggest that ChitoPEITC nanophotosensitizers are a promising candidate for the treatment of human colon cancer cells.
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Affiliation(s)
- Inho Bae
- Department of Dental Materials, College of Dentistry, Chosun University, Gwangju 61452, Korea
| | - Taeyu Grace Kim
- Tyros Biotechnology Inc., 75 Kneeland St. 14 floors, Boston, MA 02111, USA
- Brookline High School, 115 Greenough St., Brookline, MA 02445, USA
| | - Taeyeon Kim
- College of Art & Science, University of Pennsylvania, 249 S 36th St., Philadelphia, PA 19104, USA
| | - Dohoon Kim
- Tyros Biotechnology Inc., 75 Kneeland St. 14 floors, Boston, MA 02111, USA
| | - Doug-Hoon Kim
- Department of Optometry, Masan University, Changwon 51217, Korea
| | - Jaewon Jo
- Gwangju Center, Korea Basic Science Institute, Gwangju 61186, Korea
| | - Young-Ju Lee
- Gwangju Center, Korea Basic Science Institute, Gwangju 61186, Korea
| | - Young-Il Jeong
- Tyros Biotechnology Inc., 75 Kneeland St. 14 floors, Boston, MA 02111, USA
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Laranjo M, Pereira NAM, Oliveira ASR, Campos Aguiar M, Brites G, Nascimento BFO, Serambeque B, Costa BDP, Pina J, Seixas de Melo JS, Pineiro M, Botelho MF, Pinho e Melo TMVD. Ring-Fused meso-Tetraarylchlorins as Auspicious PDT Sensitizers: Synthesis, Structural Characterization, Photophysics, and Biological Evaluation. Front Chem 2022; 10:873245. [PMID: 35572112 PMCID: PMC9091369 DOI: 10.3389/fchem.2022.873245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/02/2022] [Indexed: 11/13/2022] Open
Abstract
Novel 4,5,6,7-tetrahydropyrazolo[1,5-a]pyridine-fused meso-tetraarylchlorins, with different degrees of hydrophilicity (with methyl ester, hydroxymethyl, and carboxylic acid moieties), have been synthesized and their photophysical characterization as well as in vitro photocytotoxicity assessment against human melanoma and esophageal and bladder carcinomas was carried out. An integrated analysis of the photosensitizers’ performance, considering the singlet oxygen generation data, cell internalization, and intracellular localization, allowed to establish relevant structure-photoactivity relationships and the rationalization of the observed photocytotoxicity. In the diacid and monoalcohol series, chlorins derived from meso-tetraphenylporphyrin proved to be the most efficient photodynamic therapy agents, showing IC50 values of 68 and 344 nM against A375 cells, respectively. These compounds were less active against OE19 and HT1376 cells, the diacid chlorin with IC50 values still in the nano-molar range, whereas the monohydroxymethyl-chlorin showed significantly higher IC50 values. The lead di(hydroxymethyl)-substituted meso-tetraphenylchlorin confirmed its remarkable photoactivity with IC50 values below 75 nM against the studied cancer cell lines. Subcellular accumulation of this chlorin in the mitochondria, endoplasmic reticulum, and plasma membrane was demonstrated.
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Affiliation(s)
- Mafalda Laranjo
- Institute of Biophysics and Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Centre of Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical and Academic Centre of Coimbra (CACC), Coimbra, Portugal
| | - Nelson A. M. Pereira
- Department of Chemistry, Coimbra Chemistry Centre-Institute of Molecular Sciences, University of Coimbra, Coimbra, Portugal
| | - Andreia S. R. Oliveira
- Department of Chemistry, Coimbra Chemistry Centre-Institute of Molecular Sciences, University of Coimbra, Coimbra, Portugal
| | - Márcia Campos Aguiar
- Institute of Biophysics and Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Department of Chemistry, Coimbra Chemistry Centre-Institute of Molecular Sciences, University of Coimbra, Coimbra, Portugal
| | - Gonçalo Brites
- Institute of Biophysics and Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Bruno F. O. Nascimento
- Department of Chemistry, Coimbra Chemistry Centre-Institute of Molecular Sciences, University of Coimbra, Coimbra, Portugal
| | - Beatriz Serambeque
- Institute of Biophysics and Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Centre of Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
| | - Bruna D. P. Costa
- Department of Chemistry, Coimbra Chemistry Centre-Institute of Molecular Sciences, University of Coimbra, Coimbra, Portugal
| | - João Pina
- Department of Chemistry, Coimbra Chemistry Centre-Institute of Molecular Sciences, University of Coimbra, Coimbra, Portugal
| | - J. Sérgio Seixas de Melo
- Department of Chemistry, Coimbra Chemistry Centre-Institute of Molecular Sciences, University of Coimbra, Coimbra, Portugal
| | - Marta Pineiro
- Department of Chemistry, Coimbra Chemistry Centre-Institute of Molecular Sciences, University of Coimbra, Coimbra, Portugal
| | - M. Filomena Botelho
- Institute of Biophysics and Institute for Clinical and Biomedical Research (iCBR), Area of Environment Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Centre of Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical and Academic Centre of Coimbra (CACC), Coimbra, Portugal
| | - Teresa M. V. D. Pinho e Melo
- Department of Chemistry, Coimbra Chemistry Centre-Institute of Molecular Sciences, University of Coimbra, Coimbra, Portugal
- *Correspondence: Teresa M. V. D. Pinho e Melo,
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Parihar A, Shrivastava R, Dube A. Interaction of Cp6-his and Cp6 with bovine serum albumin and liver microsomes: Spectroscopic and molecular docking studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2021. [DOI: 10.1016/j.jpap.2020.100013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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7
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Synthesis of boronated meso-arylporphyrins via copper-catalyzed 1,3-dipolar cycloaddition reaction and their binding ability towards albumin and low density lipoproteins. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121248] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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8
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Effect of Cell-Penetrating Arginine Peptide on Interaction of Photosensitizer Chlorin e6 Incorporated into Phospholipid Nanoparticles with Tumor Cells. Bull Exp Biol Med 2019; 167:347-350. [DOI: 10.1007/s10517-019-04524-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Indexed: 02/07/2023]
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Gilson RC, Tang R, Gautam KS, Grabowska D, Achilefu S. Trafficking of a Single Photosensitizing Molecule to Different Intracellular Organelles Demonstrates Effective Hydroxyl Radical-Mediated Photodynamic Therapy in the Endoplasmic Reticulum. Bioconjug Chem 2019; 30:1451-1458. [PMID: 31009564 DOI: 10.1021/acs.bioconjchem.9b00192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Photodynamic therapy (PDT) is often used in preclinical and clinical treatment regimens. Reactive oxygen species (ROS) generated by photosensitizers (PSs) upon exposure to light induce cell death via diverse mechanisms. PSs can exert therapeutic effects in different cellular organelles, although the efficacy of organelle-specific PDT has yet to be determined as most previous studies use different PSs in different organelles. Here, we explored how a single PS, chlorin e6 (Ce6), targeted to different organelles altered the effectiveness of PDT. Ce6 intrinsically localizes to the ER after 4 h of incubation. Modification of Ce6 via conjugation with an octapeptide (LS765), a monosubstituted triphenylphosphonium (TPP) derivative (LS897), or a disubstituted TPP derivative (LS909) altered the intrinsic localization. We determined that LS765 and LS9897 predominantly accumulated in the lysosomes, but LS909 trafficked equally to both the mitochondria and the lysosomes. Moreover, the conjugation altered the type of ROS produced by Ce6, increasing the ratio of hydrogen peroxide to hydroxyl radicals. Irradiation of identical concentrations of the PSs in solution with 650 nm, 0.84 mW/cm2 light for 10 min showed that the TPP conjugates nearly doubled the hydrogen peroxide production from ∼0.2 μM for Ce6 and LS765 to ∼0.37 μM for LS897 and LS909. In contrast, Ce6 produced ∼1.5-fold higher hydroxyl radicals than its conjugates. To compare the effect of each PS on cell death, we normalized the intracellular concentration of each PS. Hydrogen peroxide-producing PSs are effective PDT agents in the lysosomes while the hydroxyl-generating PSs are very effective in the ER. Compared to the PSs that accumulated in the lysosomes, only the ER-targeted Ce6 exerted >50% cell death at either low light power or low intracellular concentration. By delineating the contributions of cellular organelles and types of ROS produced, our work suggests that targeting hydroxyl radical-producing PSs to the ER is an exciting strategy to improve the therapeutic outcome of PDT.
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Affiliation(s)
- Rebecca C Gilson
- Department of Biomedical Engineering , Washington University in St. Louis , One Brookings Drive , St. Louis, Missouri 63130 , United States.,Department of Radiology , Washington University School of Medicine , St. Louis , Missouri 63110 , United States
| | - Rui Tang
- Department of Radiology , Washington University School of Medicine , St. Louis , Missouri 63110 , United States
| | - Krishna Sharmah Gautam
- Department of Radiology , Washington University School of Medicine , St. Louis , Missouri 63110 , United States
| | - Dorota Grabowska
- Department of Radiology , Washington University School of Medicine , St. Louis , Missouri 63110 , United States
| | - Samuel Achilefu
- Department of Biomedical Engineering , Washington University in St. Louis , One Brookings Drive , St. Louis, Missouri 63130 , United States.,Department of Radiology , Washington University School of Medicine , St. Louis , Missouri 63110 , United States.,Department of Biochemistry and Molecular Biophysics , Washington University School of Medicine , 660 South Euclid Avenue , St. Louis , Missouri 63110 , United States
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Impact of Quantum Dot Surface on Complex Formation with Chlorin e₆ and Photodynamic Therapy. NANOMATERIALS 2018; 9:nano9010009. [PMID: 30583495 PMCID: PMC6359007 DOI: 10.3390/nano9010009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 12/16/2018] [Accepted: 12/18/2018] [Indexed: 01/18/2023]
Abstract
Nanomaterials have permeated various fields of scientific research, including that of biomedicine, as alternatives for disease diagnosis and therapy. Among different structures, quantum dots (QDs) have distinctive physico-chemical properties sought after in cancer research and eradication. Within the context of cancer therapy, QDs serve the role of transporters and energy donors to photodynamic therapy (PDT) drugs, extending the applicability and efficiency of classic PDT. In contrast to conventional PDT agents, QDs’ surface can be designed to promote cellular targeting and internalization, while their spectral properties enable better light harvesting and deep-tissue use. Here, we investigate the possibility of complex formation between different amphiphilic coating bearing QDs and photosensitizer chlorin e6 (Ce6). We show that complex formation dynamics are dependent on the type of coating—phospholipids or amphiphilic polymers—as well as on the surface charge of QDs. Förster’s resonant energy transfer occurred in every complex studied, confirming the possibility of indirect Ce6 excitation. Nonetheless, in vitro PDT activity was restricted only to negative charge bearing QD-Ce6 complexes, correlating with better accumulation in cancer cells. Overall, these findings help to better design such and similar complexes, as gained insights can be straightforwardly translated to other types of nanostructures—expanding the palette of possible therapeutic agents for cancer therapy.
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Arkhypchuk AI, Orthaber A, Kovacs D, Borbas KE. Isolation and Characterization of a Monoprotonated Hydroporphyrin. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801472] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anna I. Arkhypchuk
- Department of Chemistry Ångström Laboratory, Box; Uppsala University; 523 Sweden
| | - Andreas Orthaber
- Department of Chemistry Ångström Laboratory, Box; Uppsala University; 523 Sweden
| | - Daniel Kovacs
- Department of Chemistry Ångström Laboratory, Box; Uppsala University; 523 Sweden
| | - K. Eszter Borbas
- Department of Chemistry Ångström Laboratory, Box; Uppsala University; 523 Sweden
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Pellosi DS, Macaroff PP, Morais PC, Tedesco AC. Magneto low-density nanoemulsion (MLDE): A potential vehicle for combined hyperthermia and photodynamic therapy to treat cancer selectively. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:103-111. [PMID: 30184726 DOI: 10.1016/j.msec.2018.06.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 05/23/2018] [Accepted: 06/14/2018] [Indexed: 12/12/2022]
Abstract
In this paper, we introduce a new drug delivery system (DDS) called magneto low-density nanoemulsion (MLDE), which can carry maghemite nanoparticles and Chlorin e6 as an active photosensitizer drug. This design can enhance tumor damage after minor heat dissipation and/or minimum visible light photosensitization doses by classical magnetic hyperthermia (MHT) and photodynamic therapy (PDT), respectively. We establish protocols to prepare the MLDE and to load the drug combination onto it. The MLDE prepared herein is nanometric (<200 nm), has high encapsulation efficiency, and is stable for at least 12 months in water dispersions. Flow cytometry results demonstrated that MLDE presents targeted selectivity toward the MCF-7 breast cancer cell line but not in NHI-3T3 mouse fibroblast cell lines, because the MCF-7 cancer cell surface contains overexpressed low density lipoprotein (LDL) receptors. Despite this targeted effect, MHT or PDT alone does not prompt significant antiproliferative outcomes. On the other hand, MHT and PDT in combination induce a strong and synergic action on MCF-7 cells and reduce the cell viability. In conclusion, the developed MLDE deserves further investigation because it is biocompatible, displays good encapsulation efficiency, and is highly stable. Moreover, it is selectively taken up by cancer cell surfaces with receptor recognition based on LDL receptor overexpression, which potentiates the action of combined MHT and PDT.
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Affiliation(s)
- Diogo Silva Pellosi
- Laboratory of Hibrid Materials, Universidade Federal de São Paulo - UNIFESP, Departamento de Ciências Exatas e da Terra, Rua São Nicolau 210, 09913-030, Diadema, Brazil; Department of Chemistry, Center of Nanotechnologyand Tissue Engineering -Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Brazil
| | - Patricia Pereira Macaroff
- Department of Chemistry, Center of Nanotechnologyand Tissue Engineering -Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Brazil
| | - Paulo Cesar Morais
- Laboratory of Optical Spectroscopy, Institute of Physics, Universidade de Brasilia, 70919-970 Brasília/DF, Brazil
| | - Antonio Claudio Tedesco
- Department of Chemistry, Center of Nanotechnologyand Tissue Engineering -Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Brazil.
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Mocanu MN, Yan F. Ultrasound-assisted interaction between chlorin-e6 and human serum albumin: pH dependence, singlet oxygen production, and formulation effect. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 190:208-214. [PMID: 28926772 DOI: 10.1016/j.saa.2017.09.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 08/21/2017] [Accepted: 09/12/2017] [Indexed: 06/07/2023]
Abstract
The interaction between chlorin e6 (Ce6) and human serum albumin (HSA) in the presence and absence of ultrasound have been investigated by ultraviolet-visible absorption spectroscopy and fluorescence spectroscopy. Ce6 is found to bind strongly to HSA at or near physiological pH conditions, but the strength of the binding is significantly weakened at lower pHs. The intrinsic fluorescence of HSA is incrementally quenched with increasing concentration of Ce6, and the quenching is enhanced after exposure to high-frequency ultrasound. Our experimental results suggest that Ce6-induced sonodynamic oxidation of HSA is mainly mediated by singlet oxygen. The formulation of Ce6 by high molecular weight polyvinylpyrrolidone (PVP) increased its stability in aqueous solutions and its quantum yield of singlet oxygen under ultrasound irradiation.
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Affiliation(s)
- Mihaela N Mocanu
- Department of Chemistry and Biochemistry, North Carolina Central University, Durham, NC, USA
| | - Fei Yan
- Department of Chemistry and Biochemistry, North Carolina Central University, Durham, NC, USA.
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14
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Raznitsyna I, Kulikova P, Rogatkin D, Kulikov D, Bychenkov O, Chursinova Y, Bobrov M, Glazkov A. Fluorescence of radiation-induced tissue damage. Int J Radiat Biol 2018; 94:166-173. [PMID: 29297727 DOI: 10.1080/09553002.2018.1420925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE The aim of this study was evaluating changes in the photosensitizer fluorescence in vivo in the radiation-induced damage area in comparison of intact areas with a simultaneous assessment of changes both in blood parameters and in histological data. MATERIALS AND METHODS The study was conducted in white outbred SHK mice (n = 21). Their right hindlimbs were irradiated with a dose of 25 Gy after the intraperitoneal injections of photosensitizer 'Photosens'. Fluorescence intensity was traced in vivo by a laser diagnostic system for seven weeks. Simultaneously, histological examination of the damaged areas and blood tests were performed. RESULTS An increased intensity of the laser-induced fluorescence of the photosensitizer 'Photosens' in the damaged areas, compared to the intact symmetrical ones was observed. Laboratory blood tests and histological examination showed changes that may indicate the occurrence of inflammation. CONCLUSION Enhanced intensity of the exogenous fluorescence of the photosensitizer in the radiation-induced inflammation of noncancerous tissues was observed. The obtained results may potentially affect an interpretation of the results of intraoperative tumors navigation that have been previously irradiated and can be used for selection of an individualized dose fractionation algorithm in radiology.
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Affiliation(s)
- Irina Raznitsyna
- a Laboratory of Medical and Physics Research , Moscow Regional Research and Clinical Institute (MONIKI) , Moscow , Russian Federation.,b Institute of Engineering Physics for Biomedicine , National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) , Moscow , Russian Federation
| | - Polina Kulikova
- a Laboratory of Medical and Physics Research , Moscow Regional Research and Clinical Institute (MONIKI) , Moscow , Russian Federation
| | - Dmitry Rogatkin
- a Laboratory of Medical and Physics Research , Moscow Regional Research and Clinical Institute (MONIKI) , Moscow , Russian Federation
| | - Dmitry Kulikov
- a Laboratory of Medical and Physics Research , Moscow Regional Research and Clinical Institute (MONIKI) , Moscow , Russian Federation
| | - Oleg Bychenkov
- c Department of Radiology , Moscow Regional Research and Clinical Institute (MONIKI) , Moscow , Russian Federation
| | - Yuliya Chursinova
- d Clinical Laboratory Diagnostics Department Faculty of Doctors Improvement , Moscow Regional Research and Clinical Institute (MONIKI) , Moscow , Russian Federation
| | - Maksim Bobrov
- e Department of Pathology , Moscow Regional Research and Clinical Institute (MONIKI) , Moscow , Russian Federation
| | - Alexey Glazkov
- a Laboratory of Medical and Physics Research , Moscow Regional Research and Clinical Institute (MONIKI) , Moscow , Russian Federation
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15
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Abdel Gaber SA, Müller P, Zimmermann W, Hüttenberger D, Wittig R, Abdel Kader MH, Stepp H. ABCG2-mediated suppression of chlorin e6 accumulation and photodynamic therapy efficiency in glioblastoma cell lines can be reversed by KO143. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 178:182-191. [DOI: 10.1016/j.jphotobiol.2017.10.035] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 10/26/2017] [Accepted: 10/28/2017] [Indexed: 12/21/2022]
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16
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Gavrina AI, Shirmanova MV, Aksenova NA, Yuzhakova DV, Snopova LB, Solovieva AB, Тimashev PS, Dudenkova VV, Zagaynova EV. Photodynamic therapy of mouse tumor model using chlorin e6- polyvinyl alcohol complex. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 178:614-622. [DOI: 10.1016/j.jphotobiol.2017.12.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 12/08/2017] [Accepted: 12/12/2017] [Indexed: 01/25/2023]
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17
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Zarubaev VV, Kris'ko TC, Kriukova EV, Muraviova TD. Effect of albumin on the fluorescence quantum yield of porphyrin -based agents for fluorescent diagnostics. Photodiagnosis Photodyn Ther 2017; 20:137-143. [PMID: 28935535 DOI: 10.1016/j.pdpdt.2017.09.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 09/07/2017] [Accepted: 09/17/2017] [Indexed: 01/05/2023]
Abstract
BACKGROUND Among modern methods of tumor diagnosis, fluorescent methods are considered one of the most prospective. Diagnostic agents (DAs) spread throughout the body by the bloodstream, so, the DA molecules are often transported by albumins and can be affected by these proteins. In our study we evaluate the effect of complex formation between bovine serum albumin (BSA) and three fluorescence DA's (Photolon, Photoditazin and Dimegin) on their fluorescent quantum yields. METHODS Electron absorption spectroscopy and fluorescence spectroscopy were carried out to calculate fluorescence quantum yields of the DAs using Rhodamine 6G as a standard fluorescent dye. RESULTS For all three DA's dissolved in phosphate buffer with pH 7.5 (close to that of blood) the addition of albumin resulted in bathochromic shift of the Soret band as well as change of amplitudes of absorption bands. Similar changes were observed for fluorescence spectra of all DAs that are connected with complex formation between DA and albumin. The presence of isobestic point suggests that DA can present in the solution only in two states, free and BSA-bound. Chlorine-based DA's demonstrate about 1.5-times higher fluorescence quantum yield in PBS than Dimegin. Nevertheless, the addition of BSA to the solutions of all DA's decreases sharply their fluorescence quantum yield to approximately equal values. CONCLUSION The complex formation between DA and albumin equalize fluorescence efficacies of all studied DAs, so the results of photodymanic diagnostics using the specific DA will depend on other factors.
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Affiliation(s)
- Vladimir V Zarubaev
- St. Petersburg Pasteur Research Institute of Epidemiology and Microbiology, 197101 St. Petersburg, Russia.
| | - Tatyana C Kris'ko
- S.I. Vavilov State Optical Institute, 199053 Saint-Petersburg, Russia; ITMO University, 197101 Saint-Petersburg, Russia
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18
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Buzalewicz I, Hołowacz I, Ulatowska-Jarża A, Podbielska H. Towards dosimetry for photodynamic diagnosis with the low-level dose of photosensitizer. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017. [PMID: 28641204 DOI: 10.1016/j.jphotobiol.2017.06.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Contemporary medicine does not concern the issue of dosimetry in photodynamic diagnosis (PDD) but follows the photosensitizer (PS) producers recommendation. Most preclinical and clinical PDD studies indicate a considerable variation in the possibility of visualization and treatment, as e.g. in case of cervix lesions. Although some of these variations can be caused by the different histological subtypes or various tumor geometries, the issue of varying PS concentration in the tumor tissue volume is definitely an important factor. Therefore, there is a need to establish the objective and systematic PDD dosimetry protocol regarding doses of light and photosensitizers. METHODS Four different irradiation sources investigated in PDD (literature) were used for PS excitation. The PS luminescence was examined by means of the non-imaging (spectroscopic) and imaging (wide- and narrow-field of view) techniques. The methodology for low-level intensity photoluminescence (PL) characterization and dedicated image processing algorithm for PS luminescence images analysis were proposed. Further, HeLa cells' cultures penetration by PS was studied by a confocal microscopy. RESULTS Reducing the PS dose with the choice of proper photoexcitation conditions decreases the PDD procedure costs and the side effects, not affecting the diagnostic efficiency. We determined in vitro the minimum incubation time and photosensitizer concentration of Photolon for diagnostic purposes, for which the Photolon PL can still be observed. It was demonstrated that quantification of PS concentration, choice of proper photoexcitation source, appropriate adjustment of light dose and PS penetration of cancer cells may improve the low-level luminescence photodynamic diagnostics performance. CONCLUSIONS Practical effectiveness of the PDD strongly depends on irradiation source parameters (bandwidth, maximum intensity, half-width) and their optimization is the main conditioning factor for low-level intensity and low-cost PDD.
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Affiliation(s)
- Igor Buzalewicz
- Bio-Optics Group, Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, 27 Wybrzeze Wyspianskiego St., 50-370 Wroclaw, Poland.
| | - Iwona Hołowacz
- Bio-Optics Group, Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, 27 Wybrzeze Wyspianskiego St., 50-370 Wroclaw, Poland
| | - Agnieszka Ulatowska-Jarża
- Bio-Optics Group, Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, 27 Wybrzeze Wyspianskiego St., 50-370 Wroclaw, Poland
| | - Halina Podbielska
- Bio-Optics Group, Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, 27 Wybrzeze Wyspianskiego St., 50-370 Wroclaw, Poland
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19
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Skripka A, Marin R, Benayas A, Canton P, Hemmer E, Vetrone F. Covering the optical spectrum through collective rare-earth doping of NaGdF4 nanoparticles: 806 and 980 nm excitation routes. Phys Chem Chem Phys 2017; 19:11825-11834. [DOI: 10.1039/c7cp01167a] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Sensitization of numerous emission bands (from ultraviolet to near-infrared) in rare-earth doped multilayered nanoparticles: 806 versus 980 nm excitation.
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Affiliation(s)
- A. Skripka
- Institut National de la Recherche Scientifique
- Centre Énergie Matériaux Télécommunication
- Université du Québec
- Varennes
- Canada
| | - R. Marin
- Institut National de la Recherche Scientifique
- Centre Énergie Matériaux Télécommunication
- Université du Québec
- Varennes
- Canada
| | - A. Benayas
- Institut National de la Recherche Scientifique
- Centre Énergie Matériaux Télécommunication
- Université du Québec
- Varennes
- Canada
| | - P. Canton
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca' Foscari di Venezia
- Via Torino 155/b
- I-30170
- Venezia-Mestre
| | - E. Hemmer
- Institut National de la Recherche Scientifique
- Centre Énergie Matériaux Télécommunication
- Université du Québec
- Varennes
- Canada
| | - F. Vetrone
- Institut National de la Recherche Scientifique
- Centre Énergie Matériaux Télécommunication
- Université du Québec
- Varennes
- Canada
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20
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Sarbadhikary P, Dube A. Spectroscopic investigations on the binding of an iodinated chlorin p6-copper complex to human serum albumin. Photochem Photobiol Sci 2017; 16:1762-1770. [DOI: 10.1039/c7pp00197e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
An iodinated chlorin p6 copper complex showed high affinity to bind human serum albumin, the binding site was predicted and it was demonstrated that binding did not affect protein conformation.
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Affiliation(s)
- P. Sarbadhikary
- Raja Ramanna Centre for Advanced Technology
- Indore
- India
- Homi Bhabha National Institute
- Training School Complex
| | - A. Dube
- Raja Ramanna Centre for Advanced Technology
- Indore
- India
- Homi Bhabha National Institute
- Training School Complex
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21
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Ma K, Xing R, Jiao T, Shen G, Chen C, Li J, Yan X. Injectable Self-Assembled Dipeptide-Based Nanocarriers for Tumor Delivery and Effective In Vivo Photodynamic Therapy. ACS APPLIED MATERIALS & INTERFACES 2016; 8:30759-30767. [PMID: 27778498 DOI: 10.1021/acsami.6b10754] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Self-assembling peptide-based materials are playing an important role in fabricating drug delivery carriers; however, they are often limited by several challenges, such as precise structure modulation, desirable nanoscale size, and sufficient circulation lifetime in the body. To address this issue, herein one type of injectable dipeptide-based nanocarriers with well-modulated size and structure has been developed by adjusting glutaraldehyde (GA)-assisted cationic dipeptide (CDP) assembly. After loading a model photosensitive drug (Ce6) and further decorating CDP nanoparticles (NPs) with heparin polymers (Hep), the desired dipeptide-based NPs are achieved with an average diameter of 100 nm and surface charge of -25 mV, which are favorable for the enhanced permeability and retention effects. Significantly, the dipeptide-based NPs with Ce6 loading have a longer circulation lifetime against opsonization than free Ce6 solution, and subsequently, they achieve the best anticancer efficiency in vivo. They do not cause body weight loss or induce bad immune activation in organs, implying good biosafety of the designed carriers. Taken together, dipeptide-based delivery carriers through GA-assisted assembly may provide a new alternative for developing precisely controlled nanostructures toward effective antitumor therapy.
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Affiliation(s)
- Kai Ma
- State Key Lab of Metastable Materials Science and Technology, Yanshan University , Qinhuangdao 066004, China
- Hebei Key Lab of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University , Qinhuangdao 066004, China
| | - Ruirui Xing
- State Key Lab of Metastable Materials Science and Technology, Yanshan University , Qinhuangdao 066004, China
- Hebei Key Lab of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University , Qinhuangdao 066004, China
| | - Tifeng Jiao
- State Key Lab of Metastable Materials Science and Technology, Yanshan University , Qinhuangdao 066004, China
- Hebei Key Lab of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University , Qinhuangdao 066004, China
| | - Guizhi Shen
- State Key Lab of Biochemical Engineering, Institute of Process Engineering (IPE), Chinese Academy of Sciences (CAS) , Beijing 100190, China
| | - Chengjun Chen
- State Key Lab of Biochemical Engineering, Institute of Process Engineering (IPE), Chinese Academy of Sciences (CAS) , Beijing 100190, China
| | - Junbai Li
- Key Laboratory of Colloid and Interface Science, Center for Molecular Sciences, Institute of Chemistry, CAS , Beijing 100190, China
| | - Xuehai Yan
- State Key Lab of Biochemical Engineering, Institute of Process Engineering (IPE), Chinese Academy of Sciences (CAS) , Beijing 100190, China
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22
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John JV, Chung CW, Johnson RP, Jeong YI, Chung KD, Kang DH, Suh H, Chen H, Kim I. Dual Stimuli-Responsive Vesicular Nanospheres Fabricated by Lipopolymer Hybrids for Tumor-Targeted Photodynamic Therapy. Biomacromolecules 2015; 17:20-31. [PMID: 26636723 DOI: 10.1021/acs.biomac.5b01474] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Smart delivery system of photosensitizer chlorin e6 (Ce6) has been developed for targeted photodynamic therapy (PDT). Simple self-assemblies of the mixtures comprising soybean lecithin derived phosphatidylcholine (PC), phosphatidylethanolamine-poly(L-histidine)40 (PE-p(His)40), and folic acid (FA) conjugated phosphatidylethanolamine-poly(N-isopropylacrylamide)40 (PE-p(NIPAM)40-FA) in different ratios yield smart nanospheres characterized by (i) stable and uniform particle size (∼100 nm), (ii) positive surface charge, (iii) high hydrophobic drug (Ce6) loading efficiency up to 45%, (iv) covalently linked targeting moiety, (v) low cytotoxicity, and (vi) smartness showing p(His) block oriented pH and p(NIPAM) oriented temperature responsiveness. The Ce6-encapsulated vesicular nanospheres (Ce6@VNS) were used to confirm the efficiency of cellular uptake, intracellular distribution, and phototoxicity against KB tumor cells compared to free Ce6 at different temperature and pH conditions. The Ce6@VNS system showed significant photodynamic therapeutic efficiency on KB cells than free Ce6. A receptor-mediated inhibition study proved the site-specific delivery of Ce6 in targeted tumor cells.
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Affiliation(s)
- Johnson V John
- BK21 PLUS Center for Advanced Chemical Technology, Department Polymer Science and Engineering, Pusan National University , Busan 609-735, Republic of Korea
| | - Chung-Wook Chung
- Department of Gastroenterology, Pusan National University Hospital , Busan 602-739, Republic of Korea
| | - Renjith P Johnson
- BK21 PLUS Center for Advanced Chemical Technology, Department Polymer Science and Engineering, Pusan National University , Busan 609-735, Republic of Korea
| | - Young-Il Jeong
- Biomedical Research Institute, Pusan National University Hospital , Busan 602-739, Republic of Korea
| | - Kyu-Don Chung
- Department of Anesthesiology and Pain Medicine, College of Medicine, The Catholic University , Seoul 137-701, Republic of Korea
| | - Dae Hwan Kang
- Department of Gastroenterology, Pusan National University Hospital , Busan 602-739, Republic of Korea
| | - Hongsuk Suh
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University , Busan 609-735, Republic of Korea
| | - Hongyu Chen
- Division of Chemistry and Biological Chemistry, Nanyang Technological University , 21 Nanyang Link 637371 Singapore
| | - Il Kim
- BK21 PLUS Center for Advanced Chemical Technology, Department Polymer Science and Engineering, Pusan National University , Busan 609-735, Republic of Korea
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pH-Dependent Changes in the Mechanisms of Transport of Chlorine e6 and Its Derivatives in the Blood. Bull Exp Biol Med 2015; 160:208-12. [PMID: 26639468 DOI: 10.1007/s10517-015-3130-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Indexed: 10/22/2022]
Abstract
We studied the effects of medium pH on steady-state distribution of chlorine e6 and its derivatives between the main transport proteins of human blood plasma. The decrease in medium pH from weakly alkaline (pH 7.4) to acid (pH 5.0) was followed by an increase in relative affinity of chlorines to lipoproteins and reduced their affinity to serum albumin. pH-Dependent changes in the parameters of distribution of photosensitizers between the plasma and blood cells was revealed. We discussed the role of charge and polarity degree of photosensitizer molecule in the mechanism of binding to serum albumin. A possible role of changes in hydrogen ion activity in the processes of selective accumulation of chlorines by tumor cells is discussed.
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24
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Huang WC, Shen MY, Chen HH, Lin SC, Chiang WH, Wu PH, Chang CW, Chiang CS, Chiu HC. Monocytic delivery of therapeutic oxygen bubbles for dual-modality treatment of tumor hypoxia. J Control Release 2015; 220:738-50. [DOI: 10.1016/j.jconrel.2015.09.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 08/31/2015] [Accepted: 09/09/2015] [Indexed: 01/24/2023]
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25
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Matos C, Ribeiro C, Gomes LR. Porphyrin interaction with the membrane: the use of membrane models to elicit the diverse partition in normal and neoplastic tissue. Med Chem Res 2015. [DOI: 10.1007/s00044-015-1434-5] [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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26
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Kerdous R, Sureau F, Bour A, Bonneau S. Release kinetics of an amphiphilic photosensitizer by block-polymer nanoparticles. Int J Pharm 2015; 495:750-60. [PMID: 26387620 DOI: 10.1016/j.ijpharm.2015.09.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 09/14/2015] [Accepted: 09/15/2015] [Indexed: 12/27/2022]
Abstract
Block-polymer nanoparticles are now well-known candidates for the delivery of various non-soluble drugs to cells. The release of drugs from these nanoparticles is a major concern related to their efficiency as nanovectors and is still not completely deciphered. Various processes have been identified, depending of both the nature of the block-polymer and those of the drugs used. We focused our interest on an amphiphilic photosensitizer studied for photodynamic treatments of cancer, Pheophorbide-a (Pheo). We studied the transfer of Pheo from poly(ethyleneglycol-b-ϵ-caprolactone) nanoparticles (I) to MCF-7 cancer cells and (II) to models of membranes. Altogether, our results suggest that the delivery of the major part of the Pheo by the nanoparticles occurs via a direct transfer of Pheo from the nanoparticles to the membrane, by collision. A minor process may involve the internalization of a small amount of the nanoplatforms by the cells. So, this research illustrates the great care necessary to address the question of the choice of such nanocarriers, in relation with the properties - in particular the relative hydrophobicity - of the drugs encapsulated, and gives elements to predict the mechanism and the efficiency of the delivery.
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Affiliation(s)
- Rachid Kerdous
- Université Pierre et Marie Curie-Paris 6, Laboratoire Jean Perrin - UMR8237, 4 place Jussieu, Paris F-75005, France; CNRS, Laboratoire Jean Perrin, UMR8237, 4 place Jussieu, Paris F-75005, France
| | - Franck Sureau
- Université Pierre et Marie Curie-Paris 6, Laboratoire Jean Perrin - UMR8237, 4 place Jussieu, Paris F-75005, France; CNRS, Laboratoire Jean Perrin, UMR8237, 4 place Jussieu, Paris F-75005, France
| | - Aurélien Bour
- Université Pierre et Marie Curie-Paris 6, Laboratoire Jean Perrin - UMR8237, 4 place Jussieu, Paris F-75005, France; CNRS, Laboratoire Jean Perrin, UMR8237, 4 place Jussieu, Paris F-75005, France
| | - Stéphanie Bonneau
- Université Pierre et Marie Curie-Paris 6, Laboratoire Jean Perrin - UMR8237, 4 place Jussieu, Paris F-75005, France; CNRS, Laboratoire Jean Perrin, UMR8237, 4 place Jussieu, Paris F-75005, France.
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Mehraban N, Freeman HS. Developments in PDT Sensitizers for Increased Selectivity and Singlet Oxygen Production. MATERIALS (BASEL, SWITZERLAND) 2015; 8:4421-4456. [PMID: 28793448 PMCID: PMC5455656 DOI: 10.3390/ma8074421] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 06/29/2015] [Accepted: 07/07/2015] [Indexed: 12/20/2022]
Abstract
Photodynamic therapy (PDT) is a minimally-invasive procedure that has been clinically approved for treating certain types of cancers. This procedure takes advantage of the cytotoxic activity of singlet oxygen (¹O₂) and other reactive oxygen species (ROS) produced by visible and NIR light irradiation of dye sensitizers following their accumulation in malignant cells. The main two concerns associated with certain clinically-used PDT sensitizers that have been influencing research in this arena are low selectivity toward malignant cells and low levels of ¹O₂ production in aqueous media. Solving the selectivity issue would compensate for photosensitizer concerns such as dark toxicity and aggregation in aqueous media. One main approach to enhancing dye selectivity involves taking advantage of key methods used in pharmaceutical drug delivery. This approach lies at the heart of the recent developments in PDT research and is a point of emphasis in the present review. Of particular interest has been the development of polymeric micelles as nanoparticles for delivering hydrophobic (lipophilic) and amphiphilic photosensitizers to the target cells. This review also covers methods employed to increase ¹O₂ production efficiency, including the design of two-photon absorbing sensitizers and triplet forming cyclometalated Ir(III) complexes.
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Affiliation(s)
- Nahid Mehraban
- Fiber & Polymer Science Program, North Carolina State University, Raleigh, NC 27695-8301, USA
| | - Harold S Freeman
- Fiber & Polymer Science Program, North Carolina State University, Raleigh, NC 27695-8301, USA.
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Peng PC, Hong RL, Tsai YJ, Li PT, Tsai T, Chen CT. Dual-effect liposomes encapsulated with doxorubicin and chlorin e6 augment the therapeutic effect of tumor treatment. Lasers Surg Med 2015; 47:77-87. [PMID: 25559348 DOI: 10.1002/lsm.22312] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/23/2014] [Indexed: 01/11/2023]
Abstract
BACKGROUND AND OBJECTIVE Long circulating doxorubicin (Dox)-loaded PEGylated liposomes are clinically safer than the free form due to the significant reduction of cardiac toxicity. However, the therapeutic efficacy of the PEGylated liposome could further be improved if poor diffusivity and slow drug release of the liposome in tumor interstitium can be overcome. In this study, a dual-effect liposome triggered by photodynamic effect was developed to improve the therapeutic efficacy of Dox-loaded PEGylated liposomes. MATERIALS AND METHODS Dox and chlorin e6 (Ce6) were co-encapsulated in PEGylated liposomes (named as PL-Dox-Ce6). To induce the drug release, photodynamic effect was triggered by the light irradiation of a 662 nm diode laser. The cellular distribution of Dox and Ce6 was examined under confocal microscope. The in vitro and in vivo cytotoxicity of PL-Dox-Ce6 was determined via the colony formation assay and the synergistic C26 tumor model, respectively. RESULTS The cellular distribution of PL-Dox-Ce6 was in the cytoplasmic area; while under light irradiation, Dox was co-localized with nuclear staining positive signals. The cellular cytotoxicity of PL-Dox-Ce6 was significantly higher than the controls including liposomes encapsulating either Dox (PL-Dox) or Ce6 (PL-Ce6). The in vivo treatment efficacy of PL-Dox-Ce6 determined in the C26 tumor model reveals a significant therapeutic effect compared to that of PL-Ce6 and PL-Dox alone or in combination. CONCLUSION This study indicates that this dual-effect PEGylated liposome could provide clinical advantages in the combination regimen of photodynamic therapy and chemotherapy.
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Affiliation(s)
- Po-Chun Peng
- Department of Biochemical Science and Technology, National Taiwan University, Taipei, 106, Taiwan
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Novel Broad-Spectrum Antimicrobial Photoinactivation of In Situ Oral Biofilms by Visible Light plus Water-Filtered Infrared A. Appl Environ Microbiol 2014; 80:7324-36. [PMID: 25239897 DOI: 10.1128/aem.02490-14] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 09/13/2014] [Indexed: 11/20/2022] Open
Abstract
Antimicrobial photodynamic therapy (APDT) has gained increased attention as an alternative treatment approach in various medical fields. However, the effect of APDT using visible light plus water-filtered infrared A (VIS + wIRA) on oral biofilms remains unexplored. For this purpose, initial and mature oral biofilms were obtained in situ; six healthy subjects wore individual upper jaw acrylic devices with bovine enamel slabs attached to their proximal sites for 2 h or 3 days. The biofilms were incubated with 100 μg ml(-1) toluidine blue O (TB) or chlorin e6 (Ce6) and irradiated with VIS + wIRA with an energy density of 200 mW cm(-2) for 5 min. After cultivation, the CFU of half of the treated biofilm samples were quantified, whereas following live/dead staining, the other half of the samples were monitored by confocal laser scanning microscopy (CLSM). TB- and Ce6-mediated APDT yielded a significant decrease of up to 3.8 and 5.7 log10 CFU for initial and mature oral biofilms, respectively. Quantification of the stained photoinactivated microorganisms confirmed these results. Overall, CLSM revealed the diffusion of the tested photosensitizers into the deepest biofilm layers after exposure to APDT. In particular, Ce6-aided APDT presented elevated permeability and higher effectiveness in eradicating 89.62% of biofilm bacteria compared to TB-aided APDT (82.25%) after 3 days. In conclusion, antimicrobial photoinactivation using VIS + wIRA proved highly potent in eradicating oral biofilms. Since APDT excludes the development of microbial resistance, it could supplement the pharmaceutical treatment of periodontitis or peri-implantitis.
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Valanciunaite J, Klymchenko AS, Skripka A, Richert L, Steponkiene S, Streckyte G, Mely Y, Rotomskis R. A non-covalent complex of quantum dots and chlorin e6: efficient energy transfer and remarkable stability in living cells revealed by FLIM. RSC Adv 2014. [DOI: 10.1039/c4ra09998b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Non-covalent complex of lipid-coated CdSe/ZnS quantum dots and second-generation photosensitizer, chlorin e6 can enter living HeLa cells with maintained integrity that ensures efficient FRET.
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Affiliation(s)
- Jurga Valanciunaite
- Biomedical Physics Laboratory
- Institute of Oncology
- Vilnius University
- Vilnius, Lithuania
- Baltic Institute of Advanced Technology
| | - Andrey S. Klymchenko
- University of Strasbourg
- CNRS
- UMR 7213
- Laboratory of Biophotonics & Pharmacology
- Faculty of Pharmacology
| | - Artiom Skripka
- Biomedical Physics Laboratory
- Institute of Oncology
- Vilnius University
- Vilnius, Lithuania
| | - Ludovic Richert
- University of Strasbourg
- CNRS
- UMR 7213
- Laboratory of Biophotonics & Pharmacology
- Faculty of Pharmacology
| | - Simona Steponkiene
- Biomedical Physics Laboratory
- Institute of Oncology
- Vilnius University
- Vilnius, Lithuania
- Laser Research Center
| | - Giedre Streckyte
- Laser Research Center
- Vilnius University
- LT-10222 Vilnius, Lithuania
| | - Yves Mely
- University of Strasbourg
- CNRS
- UMR 7213
- Laboratory of Biophotonics & Pharmacology
- Faculty of Pharmacology
| | - Ricardas Rotomskis
- Biomedical Physics Laboratory
- Institute of Oncology
- Vilnius University
- Vilnius, Lithuania
- Laser Research Center
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Chauvin B, Iorga BI, Chaminade P, Paul JL, Maillard P, Prognon P, Kasselouri A. Plasma distribution of tetraphenylporphyrin derivatives relevant for Photodynamic Therapy: Importance and limits of hydrophobicity. Eur J Pharm Biopharm 2013; 83:244-52. [DOI: 10.1016/j.ejpb.2012.09.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Revised: 09/06/2012] [Accepted: 09/21/2012] [Indexed: 11/16/2022]
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Parihar A, Dube A, Gupta PK. Photodynamic treatment of oral squamous cell carcinoma in hamster cheek pouch model using chlorin p6-histamine conjugate. Photodiagnosis Photodyn Ther 2013; 10:79-86. [PMID: 23465376 DOI: 10.1016/j.pdpdt.2012.05.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Revised: 05/19/2012] [Accepted: 05/21/2012] [Indexed: 02/08/2023]
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Hynninen PH. Protonation-deprotonation equilibria in tetrapyrroles Part 3: Mono- and diprotonations of the trimethyl esters of chlorin e6 and the 71-acetal of rhodin g7 in methanolic hydrochloric acid. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424612501167] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Spectrophotometric protonation titrations were performed for the trimethyl esters (TME) of chlorin e6 (31,32-didehydrorhodochlorin-15-acetic acid) and the 71-acetal of rhodin g7 (31,32-didehydrorhodochlorin-71-oxo-15-acetic acid) using HCl as the acid and methanol as the solvent. For rhodin g7 TME, the 71-acetal formation could be clearly detected as the first step in the titration. Only two spectroscopically different protonated species were observed for each chlorin derivative in addition to the neutral forms. The two protonated species were assigned to the monocation and dication of each chlorin derivative. The following p K a values were obtained: p K3 = 4.63 and p K4 = 0.62 for chlorin e6 TME and p K3 = 4.40 and p K4 = 0.60 for the acetal of rhodin g7 TME. The protonation titration for chlorin e6 TME with HCl in acetic acid afforded UV-vis spectra similar to those obtained with HCl in methanol. The UV-vis spectrometric parameters are given for the neutral forms of chlorin e6 TME, rhodin g7 TME and its 71-acetal, as well as for the mono- and diprotonated species of chlorin e6 TME and rhodin g7 TME acetal. The protonation titration results of the chlorin e6 derivatives are compared with those previously obtained for phytyl/methyl pyropheophorbide a.
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Affiliation(s)
- Paavo H. Hynninen
- Laboratory of Organic Chemistry, Department of Chemistry, University of Helsinki, A. I. Virtasen Aukio 1, P.O. Box 55, FI-00014 Helsinki, Finland
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Novak I, Komorsky-Lovrić Š. Square-Wave Voltammetry of Sodium Copper Chlorophyllin on Glassy-Carbon and Paraffin-Impregnated Graphite Electrode. ELECTROANAL 2012. [DOI: 10.1002/elan.201200315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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35
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Slastnikova TA, Rosenkranz AA, Gulak PV, Schiffelers RM, Lupanova TN, Khramtsov YV, Zalutsky MR, Sobolev AS. Modular nanotransporters: a multipurpose in vivo working platform for targeted drug delivery. Int J Nanomedicine 2012; 7:467-82. [PMID: 22346349 PMCID: PMC3277434 DOI: 10.2147/ijn.s28249] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Modular nanotransporters (MNT) are recombinant multifunctional polypeptides created to exploit a cascade of cellular processes, initiated with membrane receptor recognition to deliver selective short-range and highly cytotoxic therapeutics to the cell nucleus. This research was designed for in vivo concept testing for this drug delivery platform using two modular nanotransporters, one targeted to the α-melanocyte-stimulating hormone (αMSH) receptor overexpressed on melanoma cells and the other to the epidermal growth factor (EGF) receptor overexpressed on several cancers, including glioblastoma, and head-and-neck and breast carcinoma cells. Methods In vivo targeting of the modular nanotransporter was determined by immuno-fluorescence confocal laser scanning microscopy and by accumulation of 125I-labeled modular nanotransporters. The in vivo therapeutic effects of the modular nanotransporters were assessed by photodynamic therapy studies, given that the cytotoxicity of photosensitizers is critically dependent on their delivery to the cell nucleus. Results Immunohistochemical analyses of tumor and neighboring normal tissues of mice injected with multifunctional nanotransporters demonstrated preferential uptake in tumor tissue, particularly in cell nuclei. With 125I-labeled MNT{αMSH}, optimal tumor:muscle and tumor:skin ratios of 8:1 and 9.8:1, respectively, were observed 3 hours after injection in B16-F1 melanoma-bearing mice. Treatment with bacteriochlorin p-MNT{αMSH} yielded 89%–98% tumor growth inhibition and a two-fold increase in survival for mice with B16-F1 and Cloudman S91 melanomas. Likewise, treatment of A431 human epidermoid carcinoma-bearing mice with chlorin e6- MNT{EGF} resulted in 94% tumor growth inhibition compared with free chlorin e6, with 75% of animals surviving at 3 months compared with 0% and 20% for untreated and free chlorin e6-treated groups, respectively. Conclusion The multifunctional nanotransporter approach provides a new in vivo functional platform for drug development that could, in principle, be applicable to any combination of cell surface receptor and agent (photosensitizers, oligonucleotides, radionuclides) requiring nuclear delivery to achieve maximum effectiveness.
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Affiliation(s)
- Tatiana A Slastnikova
- Laboratory of Molecular Genetics of Intracellular Transport, Institute of Gene Biology, Moscow, Russia
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36
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Pereira N, Serra AC, Pineiro M, Gonsalves AMDR, Abrantes M, Laranjo M, Botelho F. Synthetic porphyrins bearing β-propionate chains as photosensitizers for photodynamic therapy. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424610002227] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Porphyrins with different numbers of β-propionate chains mimicking natural porphyrins were prepared via the 2+2 MacDonald type approach. Photodynamic activity against WiDr colon adenocarcinoma cells showed that activity is related to the number of β-propionate chains, with the derivatives with two carboxylic groups showing higher activity.
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Affiliation(s)
- Nelson Pereira
- Chymiotechnon, Departamento de Química, Universidade de Coimbra, 3004-535 Coimbra, Portugal
| | - Arménio C. Serra
- Chymiotechnon, Departamento de Química, Universidade de Coimbra, 3004-535 Coimbra, Portugal
| | - Marta Pineiro
- Chymiotechnon, Departamento de Química, Universidade de Coimbra, 3004-535 Coimbra, Portugal
| | - António M. d'A. Rocha Gonsalves
- Chymiotechnon, Departamento de Química, Universidade de Coimbra, 3004-535 Coimbra, Portugal
- Centro de Investigação em Ambiente, Genética e Oncobiologia, (CIMAGO), Faculdade de Medicina de Coimbra, 3000-354 Coimbra, Portugal
| | - Margarida Abrantes
- Instituto de Biofísica/Biomatemática, IBILI, Faculdade de Medicina de Coimbra, 3000-354 Coimbra, Portugal
- Centro de Investigação em Ambiente, Genética e Oncobiologia, (CIMAGO), Faculdade de Medicina de Coimbra, 3000-354 Coimbra, Portugal
| | - Mafalda Laranjo
- Instituto de Biofísica/Biomatemática, IBILI, Faculdade de Medicina de Coimbra, 3000-354 Coimbra, Portugal
| | - Filomena Botelho
- Instituto de Biofísica/Biomatemática, IBILI, Faculdade de Medicina de Coimbra, 3000-354 Coimbra, Portugal
- Centro de Investigação em Ambiente, Genética e Oncobiologia, (CIMAGO), Faculdade de Medicina de Coimbra, 3000-354 Coimbra, Portugal
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Kerdous R, Heuvingh J, Bonneau S. Photo-dynamic induction of oxidative stress within cholesterol-containing membranes: Shape transitions and permeabilization. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2011; 1808:2965-72. [DOI: 10.1016/j.bbamem.2011.08.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2011] [Revised: 07/15/2011] [Accepted: 08/02/2011] [Indexed: 11/16/2022]
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Diprotonation process of meso-tetraphenylporphyrin derivatives designed for Photodynamic Therapy of cancers: From Multivariate Curve Resolution to predictive QSPR modeling. Anal Chim Acta 2011; 705:306-14. [DOI: 10.1016/j.aca.2011.07.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 06/30/2011] [Accepted: 07/01/2011] [Indexed: 11/21/2022]
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39
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Golovina GV, Ol’shevskaya VA, Kalinin VN, Shtil AA, Kuzmin VA. Role of the medium acidity in the complex formation of pyropheophorbide a with albumin and lipoproteins. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2011; 37:718-20. [DOI: 10.1134/s1068162011050062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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40
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Interactions between selected photosensitizers and model membranes: an NMR classification. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2011; 1808:1661-72. [PMID: 21334303 DOI: 10.1016/j.bbamem.2011.02.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Revised: 01/21/2011] [Accepted: 02/11/2011] [Indexed: 01/22/2023]
Abstract
Membrane interactions of porphyrinic photosensitizers (PSs) are known to play a crucial role for PS efficiency in photodynamic therapy (PDT). In the current paper, the interactions between 15 different porphyrinic PSs with various hydrophilic/lipophilic properties and phospholipid bilayers were probed by NMR spectroscopy. Unilamellar vesicles consisting of dioleoyl-phosphatidyl-choline (DOPC) were used as membrane models. PS-membrane interactions were deduced from analysis of the main DOPC 1H-NMR resonances (choline and lipid chain signals). Initial membrane adsorption of the PSs was indicated by induced changes to the DOPC choline signal, i.e. a split into inner and outer choline peaks. Based on this parameter, the PSs could be classified into two groups, Type-A PSs causing a split and the Type-B PSs causing no split. A further classification into two subgroups each, A1, A2 and B1, B2 was based on the observed time-dependent changes of the main DOPC NMR signals following initial PS adsorption. Four different time-correlated patterns were found indicating different levels and rates of PS penetration into the hydrophobic membrane interior. The type of interaction was mainly affected by the amphiphilicity and the overall lipophilicity of the applied PS structures. In conclusion, the NMR data provided valuable structural and dynamic insights into the PS-membrane interactions which allow deriving the structural constraints for high membrane affinity and high membrane penetration of a given PS.
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41
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Olshevskaya VA, Savchenko AN, Golovina GV, Lazarev VV, Kononova EG, Petrovskii PV, Kalinin VN, Shtil’ AA, Kuz’min VA. New boronated derivatives of purpurin-18: Synthesis and intereaction with serum albumin. DOKLADY CHEMISTRY 2011. [DOI: 10.1134/s0012500810120050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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42
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Buriankova L, Buzova D, Chorvat D, Sureau F, Brault D, Miskovský P, Jancura D. Kinetics of hypericin association with low-density lipoproteins. Photochem Photobiol 2010; 87:56-63. [PMID: 21114669 DOI: 10.1111/j.1751-1097.2010.00847.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Steady-state and time-resolved fluorescence spectroscopy have been used for the study of the incorporation kinetics of hypericin (Hyp) into low-density lipoproteins (LDL). Biphasic kinetics of Hyp association with LDL was observed when solutions of Hyp and LDL were mixed at various concentration ratios. The rapid phase of Hyp incorporation is completed within seconds, while the slow phase lasts several minutes. The relative contributions of the individual phases show that a higher amount of Hyp molecules (65%) are incorporated into LDL in the second phase. The kinetics of the incorporation of Hyp into LDL particles preloaded with Hyp (Hyp/LDL=25:1) was also investigated. The decreased intensity of Hyp fluorescence is a sign of the formation of Hyp aggregates after penetration of additional Hyp molecules into Hyp/LDL=25:1 complex. The time dependence of Hyp fluorescence was measured after mixing the complex Hyp/LDL =200:1 with appropriate amounts of free LDL molecules. For each final Hyp/LDL ratio, an increase in the intensity and lifetime of Hyp fluorescence was observed, suggesting a monomerization of Hyp aggregates. The half-time of Hyp transfer from Hyp/LDL complex to LDL particles is similar to the half-time of the slow phase of Hyp incorporation into free LDL particles.
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Ali MS, Khan JM, Aswal VK, Khan RH, Kabir-ud-Din. Multi-technique approach on the effect of surfactant concentrations on the thermal unfolding of rabbit serum albumin: Formation and solubilization of the protein aggregates. Colloids Surf B Biointerfaces 2010; 80:169-75. [DOI: 10.1016/j.colsurfb.2010.05.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2010] [Revised: 05/28/2010] [Accepted: 05/28/2010] [Indexed: 11/30/2022]
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Vermathen M, Marzorati M, Vermathen P, Bigler P. pH-dependent distribution of chlorin e6 derivatives across phospholipid bilayers probed by NMR spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:11085-11094. [PMID: 20420428 DOI: 10.1021/la100679y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The pH-dependent membrane adsorption and distribution of three chlorin derivatives, chlorin e6 (CE), rhodin G7 (RG), and monoaspartyl-chlorin e6 (MACE), in the physiological pH range (pH 6-8) were probed by NMR spectroscopy. Unilamellar vesicles consisting of dioleoyl-phosphatidyl-choline (DOPC) were used as membrane models. The chlorin derivatives were characterized with respect to their aggregation behavior, the pK(a) values of individual carboxylate groups, the extent of membrane adsorption, and their flip-flop rates across the bilayer membrane for pH 6-8. External membrane adsorption was found to be lower for RG than for CE and MACE. Both electrostatic interactions and the extent of aggregation seemed to be the main determinants of membrane adsorption. Rate constants for chlorin transfer across the membrane were found to correlate strongly with the pH of the surrounding medium, in particular, for CE and RG. In acidic solution, CE and RG transfer across the membrane was strongly accelerated, and in basic solution, all compounds were retained, mostly in the outer monolayer. In contrast, MACE flip-flop across the membrane remained very low even at pH 6. The protonation of ionizable groups is suggested to be a major determinant of chlorin transfer rates across the bilayer. pK(a) values of CE and RG were found to be between 6 and 8, and two of the carboxylate groups in MACE had pK(a) values below 6. For CE and RG, the kinetic profiles at acidic pH indicated that the initial fast membrane distribution was followed by secondary steps that are discussed in this article.
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Affiliation(s)
- Martina Vermathen
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland.
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Heuvingh J, Bonneau S. Asymmetric oxidation of giant vesicles triggers curvature-associated shape transition and permeabilization. Biophys J 2010; 97:2904-12. [PMID: 19948119 DOI: 10.1016/j.bpj.2009.08.056] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Revised: 08/03/2009] [Accepted: 08/17/2009] [Indexed: 01/05/2023] Open
Abstract
Oxidation of unsaturated lipids is a fundamental process involved in cell bioenergetics as well as in cell death. Using giant unilamellar vesicles and a chlorin photosensitizer, we asymmetrically oxidized the outer or inner monolayers of lipid membranes. We observed different shape transitions such as oblate to prolate and budding, which are typical of membrane curvature modifications. The asymmetry of the shape transitions is in accordance with a lowered effective spontaneous curvature of the leaflet being targeted. We interpret this effect as a decrease in the preferred area of the targeted leaflet compared to the other, due to the secondary products of oxidation (cleaved-lipids). Permeabilization of giant vesicles by light-induced oxidation is observed after a lag and is characterized in relation with the photosensitizer concentration. We interpret permeabilization as the opening of a pore above a critical membrane tension, resulting from the budding of vesicles. The evolution of photosensitized giant vesicle lysis tension was measured and yields an estimation of the effective spontaneous curvature at lysis. Additionally photo-oxidation was shown to be fusogenic.
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Affiliation(s)
- Julien Heuvingh
- Université Paris Diderot, Laboratoire de Physique et Mécanique des Milieux Hétérogènes, UMR7636, Centre National de la Recherche Scientifique/Ecole Superieure Physique Chimie Industrielles Ville de Paris, Université Pierre et Marie Curie, Paris, France.
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Douillard S, Lhommeau I, Olivier D, Patrice T. In vitro evaluation of Radachlorin® sensitizer for photodynamic therapy. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2010; 98:128-37. [DOI: 10.1016/j.jphotobiol.2009.11.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2008] [Revised: 11/25/2009] [Accepted: 11/26/2009] [Indexed: 10/20/2022]
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Mojzisova H, Bonneau S, Maillard P, Berg K, Brault D. Photosensitizing properties of chlorins in solution and in membrane-mimicking systems. Photochem Photobiol Sci 2009; 8:778-87. [PMID: 19492105 DOI: 10.1039/b822269j] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photosensitizing properties of three chlorins, meso-tetra(3-hydroxyphenyl)chlorin (m-THPC), chlorin e6 (Ce6) and meso-tetraphenylchlorin substituted by two adjacent sulfonated groups (TPCS(2a)) are compared in solution and when incorporated in dioleoyl-sn-phosphatidylcholine (DOPC) liposomes. In solution, the three chlorins possess a similar efficacy to generate singlet oxygen (quantum yield approximately 0.65). The formation of conjugated dienes was used to determine their ability to induce the peroxidation of methyl linoleate as a target of singlet oxygen. In ethanol solution, the apparent quantum yield for this process is the same for the three chlorins and its value agrees with that expected from the known rates for the decay of singlet oxygen and its reaction with methyl linoleate. When incorporated in liposomes, the order of efficacy is m-THPC > TPCS(2a) > Ce6. This order is tentatively assigned to the relative embedment of the photosensitizer within the lipidic bilayer, TPCS(2a) and Ce6 being anchored by their negative chains nearer to the water-lipid interface. The photoinduced permeation of the lipidic bilayer by these chlorins was investigated by measuring the release of carboxyfluorescein entrapped into DOPC liposomes. The charged chlorins, in particular TPCS(2a), are the most efficient, a result discussed in relation with the technology of photochemical internalization, PCI.
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Affiliation(s)
- Halina Mojzisova
- Laboratoire Acides Nucléiques et BioPhotonique (ANBioPhi), CNRS FRE 3207, 91030 Evry cedex, France
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Ol’shevskaya VA, Nikitina RG, Savchenko AN, Malshakova MV, Vinogradov AM, Golovina GV, Belykh DV, Kutchin AV, Kaplan MA, Kalinin VN, Kuzmin VA, Shtil AA. Novel boronated chlorin e6-based photosensitizers: Synthesis, binding to albumin and antitumour efficacy. Bioorg Med Chem 2009; 17:1297-306. [DOI: 10.1016/j.bmc.2008.12.016] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2008] [Revised: 12/02/2008] [Accepted: 12/08/2008] [Indexed: 11/29/2022]
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49
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Douillard S, Olivier D, Patrice T. In vitro and in vivo evaluation of Radachlorin® sensitizer for photodynamic therapy. Photochem Photobiol Sci 2009; 8:405-13. [DOI: 10.1039/b817175k] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Vermathen M, Vermathen P, Simonis U, Bigler P. Time-dependent interactions of the two porphyrinic compounds chlorin e6 and mono-L-aspartyl-chlorin e6 with phospholipid vesicles probed by NMR spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:12521-12533. [PMID: 18823137 DOI: 10.1021/la802040v] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The distribution processes of chlorin e6 (CE) and monoaspartyl-chlorin e6 (MACE) between the outer and inner phospholipid monolayers of 1,2-dioleoyl-phosphatidylcholine (DOPC) vesicles were monitored by 1H NMR spectroscopy through analysis of chemical shifts and line widths of the DOPC vesicle resonances. Chlorin adsorption to the outer vesicle monolayer induced changes in the DOPC 1H NMR spectrum. Most pronounced was a split of the N-methyl choline resonance, allowing for separate analysis of inner and outer vesicle layers. Transbilayer distribution of the chlorin compounds was indicated by time-dependent characteristic spectral changes of the DOPC resonances. Kinetic parameters for the flip-flop processes, that is, half-lives and rate constants, were obtained from the experimental data points. In comparison to CE, MACE transbilayer movement was significantly reduced, with MACE remaining more or less attached to the outer membrane layer. The distribution coefficients for CE and MACE between the vesicular and aqueous phase were determined. Both CE and MACE exhibited a high affinity for the vesicular phase. For CE, a positive correlation was found between transfer rate and increasing molar ratio CE/DOPC. Enhanced membrane rigidity induced by increasing amounts of cholesterol into the model membrane was accompanied by a decrease of CE flip-flop rates across the membrane. The present study shows that the movement of porphyrins across membranes can efficiently be investigated by 1H NMR spectroscopy and that small changes in porphyrin structure can have large effects on membrane kinetics.
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Affiliation(s)
- Martina Vermathen
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland.
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