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Application of chemometric method and computational analysis in the spectroscopic study of Azure A dimerization. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Calori IR, Braga G, Tessaro AL, Caetano W, Tedesco AC, Hioka N. Self-aggregation of the proteolytic forms of Verteporfin: An in silico and in vitro study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Xu Z, Xue T, He T. Investigation on the chiral recognition mechanism between verteporfin and cholate salts by capillary electrophoresis. J Sep Sci 2020; 43:2905-2913. [DOI: 10.1002/jssc.202000026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 04/04/2020] [Accepted: 04/14/2020] [Indexed: 01/08/2023]
Affiliation(s)
- Zhongqi Xu
- College of ChemistryChemical Engineering and BiotechnologyDonghua University Shanghai 201620 P. R. China
| | - Tianfeng Xue
- College of ChemistryChemical Engineering and BiotechnologyDonghua University Shanghai 201620 P. R. China
| | - Tao He
- College of ChemistryChemical Engineering and BiotechnologyDonghua University Shanghai 201620 P. R. China
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Cesar GB, Pellosi DS, Vanzin D, Gonçalves RS, Caetano W, Hioka N, Tessaro AL. New insights about the self-aggregation of benzoporphyrin derivatives: A theoretical and experimental investigation. J PORPHYR PHTHALOCYA 2018. [DOI: 10.1142/s1088424618500311] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The self-aggregation process and its overcoming remain a barrier for the employment of many molecules as photosensitizers (PS) in photodynamic therapy (PDT). The B-ring isomer co-produced during the synthesis of the Verteporfin[Formula: see text] (A-ring) is an example. Although both isomers possess similar in vitro/in vivo efficiency, the strong and not well-understood self-aggregation process of the B-ring derivative impairs its clinical use. This paper reports the use of theoretical calculus and its correlation with experimental analysis to find the main differences between the A and B-ring isomers. For that purpose, micelles of Pluronic[Formula: see text] P-123 and Sodium Dodecyl Sulfate were chosen as simple membrane models and possible drug delivery system, as in the case of P-123. At physiological pH, the main reason for the high self-aggregation tendency is associated with the higher (22%) molecular volume of the B ring, which increases the van der Waals interactions. However, at mildly acidic conditions, the B ring possesses a shallow dihedral angle between the methyl ester group and the tetrapyrrolic macrocycle that favors the approach of units in the aggregate. These discrepancies directly affect the binding and stability of the isomers in the micelles. However, P-123 micelles were able to readily incorporate and monomerize/stabilize both PS over long periods. NOESY experiments confirmed a deep location of both PS inside P-123 micelles, which justifies their efficiency in preventing the self-aggregation process. These findings may substantiate new studies involving the marginalized B-ring isomers and encourage new development in formulations for their use in PDT.
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Affiliation(s)
- Gabriel B. Cesar
- Departamento de Química, Universidade Estadual de Maringá, Av. Colombo, 5.790; CEP 87.020-900, Maringá, Paraná, Brazil
| | - Diogo S. Pellosi
- Departamento de Química, Universidade Estadual de Maringá, Av. Colombo, 5.790; CEP 87.020-900, Maringá, Paraná, Brazil
| | - Douglas Vanzin
- Departamento de Química, Universidade Estadual de Maringá, Av. Colombo, 5.790; CEP 87.020-900, Maringá, Paraná, Brazil
| | - Renato S. Gonçalves
- Departamento de Química, Universidade Estadual de Maringá, Av. Colombo, 5.790; CEP 87.020-900, Maringá, Paraná, Brazil
| | - Wilker Caetano
- Departamento de Química, Universidade Estadual de Maringá, Av. Colombo, 5.790; CEP 87.020-900, Maringá, Paraná, Brazil
| | - Noboru Hioka
- Departamento de Química, Universidade Estadual de Maringá, Av. Colombo, 5.790; CEP 87.020-900, Maringá, Paraná, Brazil
| | - André L. Tessaro
- Universidade Tecnológica Federal do Paraná, R. Marcílio Dias, 635; CEP 86.812-460, Apucarana, Paraná, Brazil
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Pellosi DS, Calori IR, de Paula LB, Hioka N, Quaglia F, Tedesco AC. Multifunctional theranostic Pluronic mixed micelles improve targeted photoactivity of Verteporfin in cancer cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 71:1-9. [PMID: 27987651 DOI: 10.1016/j.msec.2016.09.064] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 09/13/2016] [Accepted: 09/27/2016] [Indexed: 01/04/2023]
Abstract
Nanotechnology development provides new strategies to treat cancer by integration of different treatment modalities in a single multifunctional nanoparticle. In this scenario, we applied the multifunctional Pluronic P123/F127 mixed micelles for Verteporfin-mediated photodynamic therapy in PC3 and MCF-7 cancer cells. Micelles functionalization aimed the targeted delivery by the insertion of biotin moiety on micelle surface and fluorescence image-based through rhodamine-B dye conjugation in the polymer chains. Multifunctional Pluronics formed spherical nanoparticulated micelles that efficiently encapsulated the photosensitizer Verteporfin maintaining its favorable photophysical properties. Lyophilized formulations were stable at least for 6months and readily reconstituted in aqueous media. The multifunctional micelles were stable in protein-rich media due to the dual Pluronic mixed micelles characteristic: high drug loading capacity provided by its micellar core and high kinetic stability due its biocompatible shell. Biotin surface functionalized micelles showed higher internalization rates due biotin-mediated endocytosis, as demonstrated by competitive cellular uptake studies. Rhodamine B-tagged micelles allowed monitoring cellular uptake and intracellular distribution of the formulations. Confocal microscopy studies demonstrated a larger intracellular distribution of the formulation and photosensitizer, which could drive Verteporfin to act on multiple cell sites. Formulations were not toxic in the dark condition, but showed high Verteporfin-induced phototoxicity against both cancer cell lines at low drug and light doses. These results point Verteporfin-loaded multifunctional micelles as a promising tool to further developments in photodynamic therapy of cancer.
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Affiliation(s)
- Diogo Silva Pellosi
- Laboratory of Phobiology and photomdicine, Department of Chemistry (FFCLRP), University of São Paulo, Av. dos Bandeirantes 3900, 14040-901, Vila Monte Alegre, Ribeirão Preto, Brazil
| | - Italo Rodrigo Calori
- Research Nucleus of Photodynamic Therapy, Department of Chemistry, State University of Maringá, Av. Colombo 5790, 97020-900 Maringá, Brazil
| | - Leonardo Barcelos de Paula
- Laboratory of Phobiology and photomdicine, Department of Chemistry (FFCLRP), University of São Paulo, Av. dos Bandeirantes 3900, 14040-901, Vila Monte Alegre, Ribeirão Preto, Brazil
| | - Noboru Hioka
- Research Nucleus of Photodynamic Therapy, Department of Chemistry, State University of Maringá, Av. Colombo 5790, 97020-900 Maringá, Brazil
| | - Fabiana Quaglia
- Laboratory of Drug Delivery, Department of Pharmacy, University of Napoli Federico II, Via Domenico Montesanto 49, 80131 Napoli, Italy
| | - Antonio Claudio Tedesco
- Laboratory of Phobiology and photomdicine, Department of Chemistry (FFCLRP), University of São Paulo, Av. dos Bandeirantes 3900, 14040-901, Vila Monte Alegre, Ribeirão Preto, Brazil.
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Pellosi DS, Tessaro AL, Moret F, Gaio E, Reddi E, Caetano W, Quaglia F, Hioka N. Pluronic® mixed micelles as efficient nanocarriers for benzoporphyrin derivatives applied to photodynamic therapy in cancer cells. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2015.08.024] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Estevão BM, Pellosi DS, de Freitas CF, Vanzin D, Franciscato DS, Caetano W, Hioka N. Interaction of eosin and its ester derivatives with aqueous biomimetic micelles: Evaluation of photodynamic potentialities. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2014.04.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Electronic structures and spectroscopic properties of benzoporphyrin protolytic species: A TD-DFT study. COMPUT THEOR CHEM 2013. [DOI: 10.1016/j.comptc.2013.07.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Rabello BR, Gerola AP, Pellosi DS, Tessaro AL, Aparício JL, Caetano W, Hioka N. Singlet oxygen dosimetry using uric acid as a chemical probe: Systematic evaluation. J Photochem Photobiol A Chem 2012. [DOI: 10.1016/j.jphotochem.2012.04.012] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Batistela VR, Pellosi DS, de Souza FD, da Costa WF, de Oliveira Santin SM, de Souza VR, Caetano W, de Oliveira HPM, Scarminio IS, Hioka N. pKa determinations of xanthene derivates in aqueous solutions by multivariate analysis applied to UV-Vis spectrophotometric data. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 79:889-897. [PMID: 21550841 DOI: 10.1016/j.saa.2011.03.027] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Revised: 02/24/2011] [Accepted: 03/11/2011] [Indexed: 05/30/2023]
Abstract
Xanthenes form to an important class of dyes which are widely used. Most of them present three acid-base groups: two phenolic sites and one carboxylic site. Therefore, the pKa determination and the attribution of each group to the corresponding pKa value is a very important feature. Attempts to obtain reliable pKa through the potentiometry titration and the electronic absorption spectrophotometry using the first and second orders derivative failed. Due to the close pKa values allied to strong UV-Vis spectral overlap, multivariate analysis, a powerful chemometric method, is applied in this work. The determination was performed for eosin Y, erythrosin B, and bengal rose B, and also for other synthesized derivatives such as 2-(3,6-dihydroxy-9-acridinyl) benzoic acid, 2,4,5,7-tetranitrofluorescein, eosin methyl ester, and erythrosin methyl ester in water. These last two compounds (esters) permitted to attribute the pKa of the phenolic group, which is not easily recognizable for some investigated dyes. Besides the pKa determination, the chemometry allowed for estimating the electronic spectrum of some prevalent protolytic species and the substituents effects evaluation.
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Affiliation(s)
- Vagner Roberto Batistela
- Departamento de Química, Universidade Estadual de Maringá, Av. Colombo, 5.790, CEP 87.020-900, Maringá, Paraná, Brazil
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Gracetto AC, Tessaro AL, De Souza VR, Caetano W, Pontes RM, Batistela VR, De Oliveira HPM, Hioka N. Self-aggregation processes of 1,6-diphenyl-1,3,5-hexatriene in water/ethanol mixtures with high water percentages. APPLIED SPECTROSCOPY 2011; 65:604-610. [PMID: 21639981 DOI: 10.1366/10-06161] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This work describes the behavior of 1,6-diphenyl-1,3,5-hexatriene (DPH) in ethanol/water mixtures. The dependence of DPH photophysical properties (absorption and fluorescence emission) on the water percentage in ethanol indicates that DPH undergoes self-aggregation processes in solvent conditions above a critical water content. Evidence such as an additional absorption band, Beer's law deviation, kinetic behavior, and other experimental results obtained from temperature variation and surfactant addition demonstrated the presence of several types of DPH aggregates. Resonance light scattering measurements proved that the aggregate grew in water-rich media by a self-catalyzed process.
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Gerola AP, Tsubone TM, Santana A, de Oliveira HPM, Hioka N, Caetano W. Properties of chlorophyll and derivatives in homogeneous and microheterogeneous systems. J Phys Chem B 2011; 115:7364-73. [PMID: 21568354 DOI: 10.1021/jp201278b] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chlorophyll (Mg-Chl) and its derivatives, zinc chlorophyll (Zn-Chl), copper chlorophyll (Cu-Chl), pheophytin (Pheo), pheophorbide (Pheid), and zinc chlorophyllide (Zn-Chld), were studied as to their acid-base equilibrium properties, hydrophobicity, stability, binding, and relative localization in neutral surfactant micellar systems. The stability order of metalochlorophyll (pH(M)) in acidic medium was found to be Cu-Chl > Zn-Chld > Zn-Chl > Mg-Chl. The apparent pK(a) for protonation of porphyrin ring nitrogens was around 1.0 for all derivatives. The pK(a) for protonation of carboxylate phorbide was 5.9 for Pheid and 2.4 for Zn-Chld. This difference was attributed to complexation of carboxylate with zinc. The hydrophobicity of chlorophyll in relation to the ability of partitioning the cell membrane lipid layer was estimated in the octanol/water biphasic system. Pheo, a more hydrophobic molecule, presented the highest partition coefficient (K(P)) in the organic phase, followed by Cu-Chl, Mg-Chl, Zn-Chl, Pheid, and Zn-Chld. The hydrophobic character was the key to relative drug location in the micellar systems. All studied derivatives interacted strongly with Tween 80 micellar systems, and particularly with P-123. For both surfactants, the order followed by binding constant (K(b)) was Zn-Chld > Pheo > Cu-Chl > Mg-Chl > Zn-Chl > Pheid, while binding constants estimated for the Chl containing the phytyl group correlated with K(P). Fluorescence quenching studies have shown that phorbides are located in a less hydrophobic region than the phytyl chain-containing derivatives, which are located preferentially in a deeper micellar microenvironment. Thus, the association of the chlorophylls with specific binding sites of micellar systems is strongly modulated by the presence of phytyl chains and metal coordinated to the porphyrinic ring.
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Affiliation(s)
- Adriana P Gerola
- Chemistry Department, State University of Maringá, Paraná, Brazil
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Tessaro AL, Batistela VR, Gracetto AC, Moisés de Oliveira HP, Sernaglia RL, de Souza VR, Caetano W, Hioka N. Stability of benzoporphyrin photosensitizers in water/ethanol mixtures: pK
a
determination and self-aggregation processes. J PHYS ORG CHEM 2011. [DOI: 10.1002/poc.1721] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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