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Gaspari APS, da Silva RS, Carneiro ZA, de Carvalho MR, Carvalho I, Pernomian L, Ferreira LP, Ramos LCB, de Souza GA, Formiga ALB. Improving Cytotoxicity against Breast Cancer Cells by Using Mixed-Ligand Ruthenium(II) Complexes of 2,2'-Bipyridine, Amino Acid, and Nitric Oxide Derivatives as Potential Anticancer Agents. Anticancer Agents Med Chem 2021; 21:1602-1611. [PMID: 33081686 DOI: 10.2174/0929867327666201020155105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 08/31/2020] [Accepted: 09/06/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Several metal-based molecules that display cytotoxicity against multiple cell lines have been pursued in an attempt to fight against cancer and to overcome the typical side effects of drugs like cisplatin. In this scenario, ruthenium complexes have been extensively studied due to their activity in both in vitro and in vivo biological systems, including various cancer cell strains. OBJECTIVE We aimed to develop a method to synthesize novel [Ru(NO)(bpy)2L2]2+ complexes containing amino acid ligands by using an alternative Click Chemistry approach, namely the copper azide-alkyne cycloaddition reaction (CuAAC reaction), to construct nitrosyl/nitrite complexes bearing a modified lysine residue. METHODS We synthesized a new ligand by Click Chemistry approach and new compounds bearing the unprecedented ligand. Cytotoxicity was assessed by the classical MTT colorimetric assay. MCF-7 and MDAMB- 231 cells were used as breast cancer cell models. MCF-10 was used as a model of healthy cells. RESULTS Amino acid ligands related to N3-Lys(Fmoc) and the new pyLys were successfully synthesized by the diazotransfer reaction and the CuAAC reaction, respectively. The latter reaction involves coupling between N3-Lys(Fmoc) and 3ethynylpyridine. Both N3-Lys(Fmoc) and the new pyLys were introduced into the ruthenium bipyridine complex I, or cis-[RuII(NO)(NO2)(bpy)2]2+, to generate the common nitro-based complex III, which was further converted to the final complex IV. Results of the MTT assay proved the cytotoxic effect of cis- [RuII(NO)(pyLysO-)(bpy)2](PF6)2 against the mammalian breast cancer cells MCF-7 and MDA-MB231. CONCLUSION The viability assays revealed that complex IV, bearing a NO group and a modified lysine residue, was able to release NO and cross tumor cell membranes. In this work, Complex IV was observed to be the most active ruthenium bipyridine complex against the mammalian breast cancer cells MCF-7 and MDA-MB231: it was approximately twice as active as cisplatin, whilst complexes I-III proved to be less cytotoxic than complex IV. Additional tests using healthy MCF 10A cells showed that complexes II-IV were three- to sixfold less toxic than cisplatin, which suggested that complex IV was selective against cancer cells.
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Affiliation(s)
- Ana P S Gaspari
- Instituto Federal do Parana (IFPR), Avenida Jose Felipe Tequinha, 1400, Paranavaí/PR, 87703-536, Brazil
| | - Roberto Santana da Silva
- School of Pharmaceutical Sciences of Ribeirao Preto, Universidade de Sao Paulo, Avenida do Cafe, s/n, Ribeirao Preto/SP, 14040- 903, Brazil
| | - Zumira A Carneiro
- School of Pharmaceutical Sciences of Ribeirao Preto, Universidade de Sao Paulo, Avenida do Cafe, s/n, Ribeirao Preto/SP, 14040- 903, Brazil
| | - Marcelo Rodrigues de Carvalho
- School of Pharmaceutical Sciences of Ribeirao Preto, Universidade de Sao Paulo, Avenida do Cafe, s/n, Ribeirao Preto/SP, 14040- 903, Brazil
| | - Ivone Carvalho
- School of Pharmaceutical Sciences of Ribeirao Preto, Universidade de Sao Paulo, Avenida do Cafe, s/n, Ribeirao Preto/SP, 14040- 903, Brazil
| | - Laena Pernomian
- School of Pharmaceutical Sciences of Ribeirao Preto, Universidade de Sao Paulo, Avenida do Cafe, s/n, Ribeirao Preto/SP, 14040- 903, Brazil
| | - Lucimara P Ferreira
- Universidade Estadual de Minas Gerais (UEMG), Avenida Prof. Mário Palmerio, 1001, Frutal/MG, 38200-000, Brazil
| | - Loyanne C B Ramos
- School of Pharmaceutical Sciences of Ribeirao Preto, Universidade de Sao Paulo, Avenida do Cafe, s/n, Ribeirao Preto/SP, 14040- 903, Brazil
| | - Gabriel Aguiar de Souza
- Instituto de Quimica, Universidade Estadual de Campinas (UNICAMP), Campinas/SP, 13083-970, Brazil
| | - André L B Formiga
- Instituto de Quimica, Universidade Estadual de Campinas (UNICAMP), Campinas/SP, 13083-970, Brazil
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Dos Santos JS, Ramos LC, Ferreira LP, Campo VL, de Rezende LCD, da Silva Emery F, Santana da Silva R. Cytotoxicity, cellular uptake, and subcellular localization of a nitrogen oxide and aminopropyl-β-lactose derivative ruthenium complex used as nitric oxide delivery agent. Nitric Oxide 2019; 86:38-47. [PMID: 30790696 DOI: 10.1016/j.niox.2019.02.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/15/2018] [Accepted: 02/13/2019] [Indexed: 12/29/2022]
Abstract
This work investigates how the luminescent ruthenium-nitrite complexes cis-[Ru(py-bodipy)(dcbpy)2(NO2)](PF6) (I) and cis-[Ru(py-bodipy)(dcbpy-aminopropyl-β-lactose)2(NO2)](PF6) (II) behave toward the melanoma cancer cell line B16F10. The chemical structure and purity of the synthesized complexes were analyzed by UV-Visible and FTIR spectroscopy, MALDI, HPLC, and 1H NMR. Spectrofluorescence helped to determine the fluorescence quantum yields and lifetimes of each of these complexes. In vitro MTT cell viability assay on B16F10 cancer cells revealed that the complexes possibly have a tumoricidal role. The metal-nitrite complexes evidenced the dichotomous NO nature: at high concentration, NO exerted a tumoricidal effect, whereas cancer cells grew at low NO concentration. Flow cytometry or fluorescence microscopy aided cellular uptake calculation. Cell staining followed by fluorescence microscopy associated with organelle markers such as DAPI and Rhodamine 123 detected preferential intracellular localization of the ruthenium-nitrite py-bodipy and aminopropyl lactose derivative ruthenium complex in mitochondria. Thus, the cytotoxicity of compounds (I) and (II) against B16F10 cancer cell line show concentration-dependent results. The present studies suggest that nitric oxide ruthenium derivative compounds could be new potential chemotherapeutic agents against cytotoxic cells.
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Affiliation(s)
- Joicy Santamalvina Dos Santos
- Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Prof. Zeferino Vaz s/n, CEP, 14040-903, Ribeirão Preto, SP, Brazil; Departamento de Química Geral e Inorgânica, Instituto de Química, Universidade Federal da Bahia, Rua Barão de Geremoabo, 147, Campus Universitário de Ondina, C.E.P. 40.170-115, Salvador, BA, Brazil
| | - Loyanne C Ramos
- Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Prof. Zeferino Vaz s/n, CEP, 14040-903, Ribeirão Preto, SP, Brazil
| | - Lucimara P Ferreira
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, CEP, 14040-901, Ribeirão Preto, SP, Brazil
| | - Vanessa Leira Campo
- Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Prof. Zeferino Vaz s/n, CEP, 14040-903, Ribeirão Preto, SP, Brazil; Barão de Mauá University Centre, 423 Ramos de Azevedo Street, Jardim Paulista, CEP 14090-180, Ribeirão Preto, SP, Brazil
| | - Lucas C D de Rezende
- Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Prof. Zeferino Vaz s/n, CEP, 14040-903, Ribeirão Preto, SP, Brazil
| | - Flávio da Silva Emery
- Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Prof. Zeferino Vaz s/n, CEP, 14040-903, Ribeirão Preto, SP, Brazil
| | - Roberto Santana da Silva
- Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Prof. Zeferino Vaz s/n, CEP, 14040-903, Ribeirão Preto, SP, Brazil.
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Ferreira LP, Gaspar VM, Mano JF. Design of spherically structured 3D in vitro tumor models -Advances and prospects. Acta Biomater 2018; 75:11-34. [PMID: 29803007 DOI: 10.1016/j.actbio.2018.05.034] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 05/17/2018] [Accepted: 05/22/2018] [Indexed: 12/29/2022]
Abstract
Three-dimensional multicellular tumor models are receiving an ever-growing focus as preclinical drug-screening platforms due to their potential to recapitulate major physiological features of human tumors in vitro. In line with this momentum, the technologies for assembly of 3D microtumors are rapidly evolving towards a comprehensive inclusion of tumor microenvironment elements. Customized spherically structured platforms, including microparticles and microcapsules, provide a robust and scalable technology to imprint unique biomolecular tumor microenvironment hallmarks into 3D in vitro models. Herein, a comprehensive overview of novel advances on the integration of tumor-ECM components and biomechanical cues into 3D in vitro models assembled in spherical shaped platforms is provided. Future improvements regarding spatiotemporal/mechanical adaptability, and degradability, during microtumors in vitro 3D culture are also critically discussed considering the realistic potential of these platforms to mimic the dynamic tumor microenvironment. From a global perspective, the production of 3D multicellular spheroids with tumor ECM components included in spherical models will unlock their potential to be used in high-throughput screening of therapeutic compounds. It is envisioned, in a near future, that a combination of spherically structured 3D microtumor models with other advanced microfluidic technologies will properly recapitulate the flow dynamics of human tumors in vitro. STATEMENT OF SIGNIFICANCE The ability to correctly mimic the complexity of the tumor microenvironment in vitro is a key aspect for the development of evermore realistic in vitro models for drug-screening and fundamental cancer biology studies. In this regard, conventional spheroid-based 3D tumor models, combined with spherically structured biomaterials, opens the opportunity to precisely recapitulate complex cell-extracellular matrix interactions and tumor compartmentalization. This review provides an in-depth focus on current developments regarding spherically structured scaffolds engineered into in vitro 3D tumor models, and discusses future advances toward all-encompassing platforms that may provide an improved in vitro/in vivo correlation in a foreseeable future.
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Affiliation(s)
- L P Ferreira
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - V M Gaspar
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - J F Mano
- Department of Chemistry, CICECO - Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
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Reis ER, Ferreira LP, Nicola EMD, Borissevitch I. Comparative study of phototoxicity of protoporphyrin IX synthetic and extracted from ssp Rattus novergicus albinus rats toward murine melanoma cells. Eur Biophys J 2018; 47:601-609. [PMID: 29453611 DOI: 10.1007/s00249-018-1283-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 10/31/2017] [Accepted: 02/07/2018] [Indexed: 11/24/2022]
Abstract
Protoporphyrin IX (PpIX) is a precursor of heme synthesis and is known to be an active photosensitizer and precursor of photosensitizers applied in photodynamic therapy (PDT) and photodynamic diagnostics (PDD). On irradiation with visible light, PpIX undergoes phototransformation, producing photoproducts which may also be phototoxic and increase its efficacy. The mechanism of PpIX phototransformation depends on environmental characteristics and can be different in vitro and in vivo. In this paper, we present a comparative study of the photoactivity of synthetic PpIX and PpIX extracted from the Harderian gland of ssp Rattus novergicus albinus rats, along with their photoproducts toward murine B16F-10 melanoma cells. It was observed that when irradiated with visible light the endogenous PpIX demonstrates photocytotoxicity ten times higher than the synthetic PpIX. The photoproduct of endogenous PpIX also possesses phototoxicity, though slightly lower than that of PpIX itself. The rate of cell internalization for both endogenous PpIX and its photoproduct was eightfold greater than that obtained for the synthetic porphyrin. This difference might result from a complexation of the native PpIX with some amphiphilic compounds during its synthesis within the Harderian glands, which facilitates the cell uptake of PpIX. Fluorescence microscopy images show that both endogenous and synthetic porphyrins are localized after uptake predominantly in the mitochondrial region of cells.
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Affiliation(s)
- E R Reis
- Laser Laboratory of Medicine and Surgery Experimental Center, Faculty of Medical Sciences, State University of Campinas-UNICAMP, PO Box 6111, Campinas, SP, Cep 13083-970, Brazil.
| | - L P Ferreira
- Physics Department, Faculty of Philosophy, Sciences and Letters of Ribeirao Preto, University of Sao Paulo (USP), Ribeirao Preto, Brazil
| | - E M D Nicola
- Laser Laboratory of Medicine and Surgery Experimental Center, Faculty of Medical Sciences, State University of Campinas-UNICAMP, PO Box 6111, Campinas, SP, Cep 13083-970, Brazil
| | - I Borissevitch
- Physics Department, Faculty of Philosophy, Sciences and Letters of Ribeirao Preto, University of Sao Paulo (USP), Ribeirao Preto, Brazil.,Institute of Physics, Federal University of Goiás, Goiânia, Brazil
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Parra GG, Ferreira LP, Gonçalves PJ, Sizova SV, Oleinikov VA, Morozov VN, Kuzmin VA, Borissevitch IE. Stimulation of Cysteine-Coated CdSe/ZnS Quantum Dot Luminescence by meso-Tetrakis (p-sulfonato-phenyl) Porphyrin. Nanoscale Res Lett 2018; 13:40. [PMID: 29404784 PMCID: PMC5799094 DOI: 10.1186/s11671-018-2449-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 01/20/2018] [Indexed: 06/07/2023]
Abstract
Interaction between porphyrins and quantum dots (QD) via energy and/or charge transfer is usually accompanied by reduction of the QD luminescence intensity and lifetime. However, for CdSe/ZnS-Cys QD water solutions, kept at 276 K during 3 months (aged QD), the significant increase in the luminescence intensity at the addition of meso-tetrakis (p-sulfonato-phenyl) porphyrin (TPPS4) has been observed in this study. Aggregation of QD during the storage provokes reduction in the quantum yield and lifetime of their luminescence. Using steady-state and time-resolved fluorescence techniques, we demonstrated that TPPS4 stimulated disaggregation of aged CdSe/ZnS-Cys QD in aqueous solutions, increasing the quantum yield of their luminescence, which finally reached that of the fresh-prepared QD. Disaggregation takes place due to increase in electrostatic repulsion between QD at their binding with negatively charged porphyrin molecules. Binding of just four porphyrin molecules per single QD was sufficient for total QD disaggregation. The analysis of QD luminescence decay curves demonstrated that disaggregation stronger affected the luminescence related with the electron-hole annihilation in the QD shell. The obtained results demonstrate the way to repair aged QD by adding of some molecules or ions to the solutions, stimulating QD disaggregation and restoring their luminescence characteristics, which could be important for QD biomedical applications, such as bioimaging and fluorescence diagnostics. On the other hand, the disaggregation is important for QD applications in biology and medicine since it reduces the size of the particles facilitating their internalization into living cells across the cell membrane.
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Affiliation(s)
- Gustavo G Parra
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, 14040-901, Brazil.
- Present Address: MackGraphe, Mackenzie Presbyterian University, São Paulo, SP, 01302-907, Brazil.
| | - Lucimara P Ferreira
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
| | - Pablo J Gonçalves
- Instituto de Física, Universidade Federal de Goiás, Caixa Postal 131, Goiânia, GO, 74001-970, Brazil
| | - Svetlana V Sizova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 16/10 Miklukho-Maklaya str, Moscow, Russia, 117997
| | - Vladimir A Oleinikov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, 16/10 Miklukho-Maklaya str, Moscow, Russia, 117997
| | | | | | - Iouri E Borissevitch
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, 14040-901, Brazil
- Instituto de Física, Universidade Federal de Goiás, Caixa Postal 131, Goiânia, GO, 74001-970, Brazil
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Ferreira LP, Parra GG, Codognato DCK, Amado AM, da Silva RS. Light induced cytotoxicity of nitrofurantoin toward murine melanoma. Photochem Photobiol Sci 2017; 16:1071-1078. [PMID: 28513644 DOI: 10.1039/c6pp00306k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The cytotoxicity of nitrofurantoin (NFT) in the dark and after light exposure (UVA irradiation, λ = 385 nm) was evaluated in murine melanoma B16F10 cells. NFT induces both cell proliferation and inhibition of cell viability. The dominance of one or the other effect depends on the drug concentration, incubation time (tinc) and irradiation dose. The uptake of NFT in these cells, as well as its photocytotoxicity, reaches saturation after 24 hours of incubation. The mechanism of cell death in the dark is associated with the enzymatic release of nitric oxide (NO). The increase of NFT cytotoxicity under light irradiation is associated with the increase of NO concentration due to photorelease. NO photorelease by NFT in solution was confirmed by chemiluminescence, while NO formation in cells was confirmed by fluorescence microscopy using DAF-2DA, a specific indicator of NO in living cells. The NFT does not enter nuclei, distributing preferentially in the cell cytoplasm, as shown by fluorescence microscopy.
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Affiliation(s)
- Lucimara P Ferreira
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo. Av. Bandeirantes, 3900, CEP 14040-901, Ribeirão Preto, SP, Brazil.
| | - Gustavo G Parra
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo. Av. Bandeirantes, 3900, CEP 14040-901, Ribeirão Preto, SP, Brazil.
| | - Débora C K Codognato
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo. Av. Bandeirantes, 3900, CEP 14040-901, Ribeirão Preto, SP, Brazil.
| | - André M Amado
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo. Av. Bandeirantes, 3900, CEP 14040-901, Ribeirão Preto, SP, Brazil.
| | - Roberto S da Silva
- Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo. Av. Prof. Zeferino Vaz s/n, Monte Alegre, CEP 14040-903, Ribeirão Preto, SP, Brazil and Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo. Av. Bandeirantes, 3900, CEP 14040-901, Ribeirão Preto, SP, Brazil
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Murakami LS, Ferreira LP, Santos JS, da Silva RS, Nomizo A, Kuz'min VA, Borissevitch IE. Photocytotoxicity of a cyanine dye with two chromophores toward melanoma and normal cells. Biochim Biophys Acta Gen Subj 2014; 1850:1150-7. [PMID: 25512065 DOI: 10.1016/j.bbagen.2014.12.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 11/26/2014] [Accepted: 12/02/2014] [Indexed: 11/18/2022]
Abstract
BACKGROUND Due to high optical absorption, triplet quantum yield and affinity to biological structures bichromophoric cyanine dyes (BCDs) can be considered promising sensitizers for application in photodynamic therapy (PDT). In this work, we report on the study of the BCD photocytotoxicity toward melanoma and normal cells in comparison with that of commercial photosensitizer Photogem®. METHODS The cytotoxic and phototoxic effects were measured by standard tests of cell viability. The drug uptake was obtained by the flow cytometry and optical absorption techniques. The BCD intracellular distribution was obtained by the fluorescence image microscopy using specific organelle markers. RESULTS Both drugs demonstrated increased cytotoxicity under irradiation, while in darkness their cytotoxic effect at concentrations lower than 20 μM after 24 h of incubation did not exceed 20%. For 5 h of incubation, BCD photocytotoxicity in relation to melanoma cells reached 100% already at concentrations below 5 μM, while for normal cells the effect did not exceed 70% even for the 20 μM concentration. It is shown that BCD penetrates into the cells and is located predominantly in perinuclear cytoplasmic structures. CONCLUSIONS The BCD photosensitizing characteristics appear more adequate for application in PDT than that of the actually applied commercial photosensitizer Photogem®. Higher light absorption by BCD in the near IR region and its preferential localization in mitochondria can explain its high photocytotoxicity. GENERAL SIGNIFICANCE BCD can be considered as a new promising photosensitizer class for cancer PDT.
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Affiliation(s)
- L S Murakami
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, CEP 14040-901 Ribeirão Preto, SP, Brazil
| | - L P Ferreira
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, CEP 14040-901 Ribeirão Preto, SP, Brazil
| | - J S Santos
- Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Prof. Zeferino Vaz s/n, CEP 14040-903 Ribeirão Preto, SP, Brazil
| | - R S da Silva
- Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Prof. Zeferino Vaz s/n, CEP 14040-903 Ribeirão Preto, SP, Brazil; Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, CEP 14040-901 Ribeirão Preto, SP, Brazil
| | - A Nomizo
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Prof. Zeferino Vaz s/n, CEP 14040-903 Ribeirão Preto, SP, Brazil
| | - V A Kuz'min
- Emanuel Institute of Biochemical Physics, Russian Academy of Science, Kosygin St, 4, 117977 Moscow, Russia
| | - I E Borissevitch
- Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, CEP 14040-901 Ribeirão Preto, SP, Brazil.
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Leroy T, Marraccini P, Dufour M, Montagnon C, Lashermes P, Sabau X, Ferreira LP, Jourdan I, Pot D, Andrade AC, Glaszmann JC, Vieira LGE, Piffanelli P. Construction and characterization of a Coffea canephora BAC library to study the organization of sucrose biosynthesis genes. Theor Appl Genet 2005; 111:1032-41. [PMID: 16133319 DOI: 10.1007/s00122-005-0018-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2005] [Accepted: 06/14/2005] [Indexed: 05/04/2023]
Abstract
The first bacterial artificial chromosome (BAC) library of Robusta coffee (Coffea canephora) was constructed, with the aim of developing molecular resources to study the genome structure and evolution of this perennial crop. Clone 126, which is highly productive and confers good technological and organoleptic qualities of beverage, was chosen for development of this library. The BAC library contains 55,296 clones, with an average insert size of 135 Kb per plasmid, therefore representing theoretically nine haploid genome equivalents of C. canephora. Its validation was achieved with a set of 13 genetically anchored single-copy and 4 duplicated RFLP probes and yielded on average 9 BAC clones per probe. Screening of this BAC library was also carried out with partial cDNA probes coding for enzymes of sugar metabolism like invertases and sucrose synthase, with the aim of characterizing the organization and promoter structure of this important class of genes. It was shown that genes for both cell wall and vacuolar forms of invertases were probably unique in the Robusta genome whereas sucrose synthase was encoded by at least two genes. One of them (CcSUS1) was cloned and sequenced, showing that our BAC library is a valuable tool to rapidly identify genes of agronomic interest or linked to cup quality in C. canephora.
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Affiliation(s)
- T Leroy
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), TA 80/03, Avenue d'Agropolis, 34398 Montpellier Cedex 5, France.
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Rodrigues KA, Ferreira LP. Masseter muscles electromyography study of individuals with and without malocclusion during dental clenching. Electromyogr Clin Neurophysiol 2004; 44:271-5. [PMID: 15378865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
The present study had as an objective to verify the electromyographic activity of the masseter muscles during intercuspal maximal clenching in individuals with and without malocclusion. For such purpose, 37 individuals participated, constituting three distinct groups according to the classification of the occlusion: 9 individuals with clinically normal occlusion (G1), 17 individuals with Angle Class I malocclusion (G2) and 11 individuals with Angle Class II division 1 malocclusion (G3). Allparticipants were female, between the ages of 20 years, 7 months to 30 years, 8 months, with permanent natural teeth. The selection of the individuals was made with the application of a specific protocol, being complemented with an oral clinical myofunctional exam. The activity of the bilateral muscle masseter was investigated, in its superficial portion, by means of electromyographic evaluation with surface electrodes. Three consecutive intercuspal maximal clenching were recorded. The results showed that there was not significant statistical difference from the eletromyographic activity between the three groups. The conclusion was that the malocclusion did not interfere in the eletromyographic activity of the masseter muscles.
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Affiliation(s)
- K A Rodrigues
- Department of Speech and Language Pathology, (PUC), São Paulo, Brazil.
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Fruchart R, L'Heritier P, Reotier PDD, Fruchart D, Wolfers P, Coey JMD, Ferreira LP, Guillen R, Vulliet P, Yaouanc A. Mossbauer spectroscopy of R2Fe14B. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0305-4608/17/2/017] [Citation(s) in RCA: 105] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Carvalho JC, Sertié JA, Barbosa MV, Patrício KC, Caputo LR, Sarti SJ, Ferreira LP, Bastos JK. Anti-inflammatory activity of the crude extract from the fruits of Pterodon emarginatus Vog. J Ethnopharmacol 1999; 64:127-133. [PMID: 10197747 DOI: 10.1016/s0378-8741(98)00116-0] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The vegetal species Pterodon emarginatus Vog. (Leguminosae/Papilonaceae), popularly known in Brazil as 'sucupira branca', is widely used by domestic medicine as an anti-inflammatory. From these observations, the hexanic crude extract (HCE) of the fruits was obtained and submitted for assessment of its anti-inflammatory activity. For this purpose, the following tests were used: (1) Determination of ED50 and LD50; (2) Paw edema induced by carrageenin, dextran, histamine and nystatin; (3) Peritonitis caused by carrageenin and (4) Granuloma test. The ED50 (oral) in the edema induced by carrageenin was 500 mg/kg, and LD50 (oral) was 4.02 g/kg. In the edema caused by nystatin, there was a significant inhibition by 45% (P < 0.05 student's t-test) at the 6th hour following the treatment. In the granuloma test performed in animals treated with HCE, there was an inhibition of the granulomatous tissue formation by 22%. The migration of neutrophils towards the peritoneal cavity was inhibited in HCE treated animals by 43% (P < 0.05). However, in the edema caused by dextran and histamine, there was no significant response in HCE treated animals.
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Affiliation(s)
- J C Carvalho
- Laboratório de Fitofármacos, Universidade de Alfenas, Instituto de Farmácia e Nutrição, Minas Gerais, Brazil.
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Carvalho JC, Ferreira LP, da Silva Santos L, Corrêa MJ, de Oliveira Campos LM, Bastos JK, Sarti SJ. Anti-inflammatory activity of flavone and some of its derivates from Virola michelli Heckel. J Ethnopharmacol 1999; 64:173-177. [PMID: 10197753 DOI: 10.1016/s0378-8741(98)00109-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The phytochemical study using Virola michelli Heckel (Myristicaceae) leaves allowed the isolation of a flavone named titonine (7,4'-dimethoxy-3'-hydroxyflavone). Titonine was further submitted to methylation and acetylation reactions yielding a 7,3',4'-trimethoxyflavone and a 7,3'-dimethoxy-4'-acetylflavone, respectively. These compounds were evaluated for both anti-inflammatory and analgesic activity. The anti-inflammatory activity was evaluated in rats using the paw edema test with carrageenin, while the analgesic activity was determined in mouse using the writhing test method. The different animal groups were treated with three compounds (10 mg/kg -i.p.) thirty min prior to stimuli application. The inhibition levels obtained for each compound were 22, 41 and 68%, respectively. Using the writhing test, oral doses of 5, 10 and 15 mg/kg of natural flavone reduced the acetic acid-induced contortions in a dose-dependent manner.
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Affiliation(s)
- J C Carvalho
- Laboratório de Fitofármacos, Instituto de Farmácia e Nutrição, Universidade de Alfenas, UNIFENAS, Minas Gerais, Brazil.
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