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Pucelik B, Gürol I, Ahsen V, Dumoulin F, Dąbrowski JM. Fluorination of phthalocyanine substituents: Improved photoproperties and enhanced photodynamic efficacy after optimal micellar formulations. Eur J Med Chem 2016; 124:284-298. [PMID: 27597406 DOI: 10.1016/j.ejmech.2016.08.035] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 08/16/2016] [Accepted: 08/17/2016] [Indexed: 11/19/2022]
Abstract
A fluorinated phthalocyanine and its non-fluorinated analogue were selected to evaluate the potential enhancement of fluorination on photophysical, photochemical and redox properties as well as on biological activity in cellular and animal models. Due to the pharmacological relevance, the affinity of these phthalocyanines towards biological membranes (logPow) as well as their primary interaction with human serum albumin (HSA) or low-density lipoprotein (LDL) were determined. Water-dispersible drug formulation of phthalocyanines via Pluronic®-based triblock copolymer micelles was prepared to avoid self-aggregation effects and to improve their delivery. The obtained results demonstrate that phthalocyanines incorporation into tunable-polymeric micelles significantly enhanced their cellular uptake and their photocytotoxicity. The improved biodistribution and photodynamic efficacy of the phthalocyanines-triblock copolymer conjugates was also confirmed in vivo in CT26 bearing BALB/c mice. PDT with both compounds led to tumor growth inhibition in all treated animals. Fluorinated phthalocyanine 2 turned out to be the most effective anticancer agent as the tumors of 20% of mice treated regressed completely and did not appear for over one year after treatment.
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Affiliation(s)
- Barbara Pucelik
- Faculty of Chemistry, Jagiellonian University, 30-060 Kraków, Poland
| | - Ilke Gürol
- TÜBITAK Marmara Research Center, Materials Institute, P.O. Box 21, 41470 Gebze, Kocaeli, Turkey
| | - Vefa Ahsen
- Gebze Technical University, Department of Chemistry, P.O. Box 141, 41400 Gebze, Kocaeli, Turkey
| | - Fabienne Dumoulin
- Gebze Technical University, Department of Chemistry, P.O. Box 141, 41400 Gebze, Kocaeli, Turkey.
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Kaneko M, Ueno H, Masuda S, Suzuki K, Okimi H, Hoshino M, Lapok L, Wöhrle D. Quenching of singlet photoexcited state of water soluble phthalocyanines and porphyrins by viologens interacting electrostatically. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424605000782] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Quenching of photoexcited anionic and water-soluble phthalocyanines and 5,10,15,20-tetraarylporphyrins by viologens has been investigated. It was confirmed that the quenching of the singlet photoexcited state takes place, and that the mechanism is mostly a static one due to electrostatic interaction between the donor and the acceptor. The static mechanism was analyzed by curve-fitting of the relative emission intensity vs viologen concentration resulting in four kinds of mechanisms composed of static quenching accompanied partly by a dynamic one. The static mechanism was classified into two types: one mechanism is due to 1:n electrostatic interaction of the anionic sensitizer and the cationic acceptor, and other is a Perrin type for which the acceptor is incorporated into the quenching sphere around the sensitizer according to a Poisson distribution. The effect of micelles for the quenching was also studied including the effect of viologen with a long alkyl chain. The ionic micelles either incorporated or repulsed the ionic sensitizer and accepter resulting in either static quenching or prohibition of the quenching. Cationic phthalocyanines and porphyrins were also examined for the reaction with cationic viologens.
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Affiliation(s)
- Masao Kaneko
- Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, Mito 310-8512, Japan
| | - Hirohito Ueno
- Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, Mito 310-8512, Japan
| | - Satoshi Masuda
- Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, Mito 310-8512, Japan
| | - Kazuhisa Suzuki
- Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, Mito 310-8512, Japan
| | - Hiroshi Okimi
- Tokyo Institute of Technology, 2-12-1 Ookayama, Tokyo,152-8552, Japan
| | - Mikio Hoshino
- The Institute of Physical and Chemical Research (RIKEN), 2-1 Hirosawa, Wako, 351-0198, Japan
| | - Lukasz Lapok
- Institute of Organic and Macromolecular Chemistry, University Bremen, P.O. box 330440, 28359 Bremen, Germany
| | - Dieter Wöhrle
- Institute of Organic and Macromolecular Chemistry, University Bremen, P.O. box 330440, 28359 Bremen, Germany
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Ren J, Watanabe H, Yamamura S, Nakamura T. Selective response mechanism of a platinum disk electrode modified with polyacrylamide membrane conjugated with gallium(III) phthalocyaninate. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.07.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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