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Fernandes FAV, Arruda DC, Santana GNP, Longo LVG, Cesar MCM, da Matta DA, Borba OSM, Monteiro RC, de Moura Bello M, de Moura LHB, Neto DJ, Yarak S, de Camargo ZP, Gompertz OF, Ogawa MM. Morphological and ultrastructural changes in fungal agents after LASER application. Int J Dermatol 2024; 63:217-223. [PMID: 38044478 DOI: 10.1111/ijd.16919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/27/2023] [Accepted: 11/13/2023] [Indexed: 12/05/2023]
Abstract
BACKGROUND Onychomycosis is a fungal nail infection of difficult treatment due to the fungal survival capacity and reduced number of effective therapies. The present study aimed to isolate fungal agents that cause onychomycosis in immunocompetent patients and evaluate how LASER treatments affect the growth and ultrastructure of isolates. METHODS In total, 21 patients with positive direct microscopic examination (DME) for onychomycosis had nail samples collected for cultivation and phenotypic identification of microorganisms. From these patients, 12 underwent LASER treatment, divided in Group 1 (n = 5) treated with Nd: YAG 1,064 nm, and Group 2 (n = 7) treated with Nd: YAG 1,064 nm + Er: YAG 2,940 nm + topical isoconazole. Transmission Electron Microscopy (TEM) was performed to evaluate ultrastructural changes after treatment. RESULTS DME, cultivation, and phenotypic identification showed that the most identified fungus was Trichophyton rubrum spp. After LASER therapy, sample cultivation showed alterations in the fungal morphology with reduction of hyphae, conidia, and reproductive structures. Alterations in fungal cell wall structure, cytoplasm density, and organelles were observed by TEM. CONCLUSION LASER irradiation causes changes in the fungal cells, especially in the number of hyphae and the presence of conidia. In addition, it affects fungal growth and reproduction capacity, which interferes with their infection ability and virulence.
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Affiliation(s)
- Fernanda A V Fernandes
- Departamento de Infectologia, ESCOLA PAULISTA DE MEDICINA, Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil
| | - Denise C Arruda
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes, UMC, Mogi das Cruzes, Brazil
| | - Gilglécia N P Santana
- Departamento de Infectologia, ESCOLA PAULISTA DE MEDICINA, Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil
| | - Larissa V G Longo
- Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina-Universidade Federal de São Paulo, EPM-UNIFESP, São Paulo, Brazil
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Maria C M Cesar
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes, UMC, Mogi das Cruzes, Brazil
| | - Daniel A da Matta
- Departamento de Infectologia, ESCOLA PAULISTA DE MEDICINA, Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil
| | - Orion S M Borba
- Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina-Universidade Federal de São Paulo, EPM-UNIFESP, São Paulo, Brazil
| | - Ruan C Monteiro
- Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina-Universidade Federal de São Paulo, EPM-UNIFESP, São Paulo, Brazil
| | - Marina de Moura Bello
- Departamento de Infectologia, ESCOLA PAULISTA DE MEDICINA, Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil
| | - Luís H B de Moura
- Departamento de Dermatologia, Universidade Federal de São Paulo, EPM-UNIFESP, São Paulo, Brazil
| | - Domingos J Neto
- Departamento de Dermatologia, Hospital Heliópolis do Estado de São Paulo SP, São Paulo, Brazil
| | - Samira Yarak
- Departamento de Dermatologia, Universidade Federal de São Paulo, EPM-UNIFESP, São Paulo, Brazil
| | - Zoilo P de Camargo
- Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina-Universidade Federal de São Paulo, EPM-UNIFESP, São Paulo, Brazil
| | - Olga F Gompertz
- Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina-Universidade Federal de São Paulo, EPM-UNIFESP, São Paulo, Brazil
| | - Marília M Ogawa
- Departamento de Dermatologia, Universidade Federal de São Paulo, EPM-UNIFESP, São Paulo, Brazil
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Rodrigues EG, Dobroff AS, Arruda DC, Tada DB, Paschoalin T, Polonelli L. A limitless Brazilian scientist: Professor Travassos and his contribution to cancer biology. Braz J Microbiol 2023; 54:2551-2560. [PMID: 37589929 PMCID: PMC10689629 DOI: 10.1007/s42770-023-01085-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/04/2023] [Accepted: 07/24/2023] [Indexed: 08/18/2023] Open
Abstract
Luiz Rodolpho Travassos, a Brazilian scientist recognized in several areas of research, began his studies in the field of oncology in the late 1970s when he took a sabbatical at the Memorial Sloan Kettering Cancer Center, NY, USA. At that time, the discovery and characterization of human melanoma glycoprotein antigens yielded important publications. This experience allowed 16 years later, and Dr. Travassos founded UNONEX, significantly contributing with discoveries in the area of oncology and training of researchers. This review will address all the contributions of team of researchers who, together with Dr. Travassos, collaborated with investigations into molecules and processes that lead to the development of melanoma.
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Affiliation(s)
- Elaine G Rodrigues
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil.
| | - Andrey S Dobroff
- University of New Mexico Comprehensive Cancer Center (UNMCCC), Albuquerque, USA
- Division of Molecular Medicine, Department of Internal Medicine, University of New Mexico (UNM) School of Medicine, Albuquerque, USA
| | - Denise C Arruda
- Integrated Group of Biotechnology, University of Mogi das Cruzes, UMC, Mogi das Cruzes, SP, Brazil
| | - Dayane B Tada
- Laboratory of Nanomaterials and Nanotoxicology, Institute of Science and Technology, Federal University of São Paulo (UNIFESP), São José dos Campos, SP, Brazil
| | - Thaysa Paschoalin
- Department of Biophysics, Federal University of São Paulo (Unifesp), São Paulo, SP, Brazil.
| | - Luciano Polonelli
- Department of Medicine and Surgery, University of Parma, Parma, Italy
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Eller-Borges R, Rodrigues EG, Teodoro ACS, Moraes MS, Arruda DC, Paschoalin T, Curcio MF, da Costa PE, Do Nascimento IR, Calixto LA, Stern A, Monteiro HP, Batista WL. Bradykinin promotes murine melanoma cell migration and invasion through endogenous production of superoxide and nitric oxide. Nitric Oxide 2023; 132:15-26. [PMID: 36736618 DOI: 10.1016/j.niox.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 03/31/2022] [Revised: 12/12/2022] [Accepted: 01/30/2023] [Indexed: 02/05/2023]
Abstract
Spatial confinement and temporal regulation of signaling by nitric oxide (NO) and reactive oxygen species (ROS) occurs in cancer cells. Signaling mediated by NO and ROS was investigated in two sub clones of the murine melanoma B16F10-Nex2 cell line, Nex10C and Nex8H treated or not with bradykinin (BK). The sub clone Nex10C, similar to primary site cells, has a low capacity for colonizing the lungs, whereas the sub clone Nex8H, similar to metastatic cells, corresponds to a highly invasive melanoma. BK-treated Nex10C cells exhibited a transient increase in NO and an inhibition in basal O2- levels. Inhibition of endogenous NO production by l-NAME resulted in detectable levels of O2-. l-NAME promoted Rac1 activation and enhanced Rac1-PI3K association. l-NAME in the absence of BK resulted in Nex10C cell migration and invasion, suggesting that NO is a negative regulator of O2- mediated cell migration and cell invasion. BK-treated Nex8H cells sustained endogenous NO production through the activation of NOS3. NO activated Rac1 and promoted Rac1-PI3K association. NO stimulated cell migration and cell invasion through a signaling axis involving Ras, Rac1 and PI3K. In conclusion, a role for O2- and NO as positive regulators of Rac1-PI3K signaling associated with cell migration and cell invasion is proposed respectively for Nex10C and Nex8H murine melanoma cells.
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Affiliation(s)
- Roberta Eller-Borges
- Department of Biochemistry, Center for Cellular and Molecular Therapy (CTCMOL), Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Elaine G Rodrigues
- Department of Microbiology, Immunology and Parasitology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Ana Caroline S Teodoro
- Department of Biochemistry, Center for Cellular and Molecular Therapy (CTCMOL), Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Miriam S Moraes
- Department of Biochemistry, Center for Cellular and Molecular Therapy (CTCMOL), Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Denise C Arruda
- Núcleo Integrado de Biotecnologia (NIB), Universidade de Mogi das Cruzes (UMC), Mogi das Cruzes, São Paulo, Brazil
| | - Thaysa Paschoalin
- Department of Microbiology, Immunology and Parasitology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Marli F Curcio
- Department of Medicine/Infectious Diseases, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Paulo E da Costa
- Department of Biochemistry, Center for Cellular and Molecular Therapy (CTCMOL), Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Igor R Do Nascimento
- Department of Biochemistry, Center for Cellular and Molecular Therapy (CTCMOL), Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Leandro A Calixto
- Department of Pharmaceutical Sciences, Universidade Federal de São Paulo, Diadema, São Paulo, Brazil
| | - Arnold Stern
- New York University Grossman School of Medicine, New York, NY, USA
| | - Hugo P Monteiro
- Department of Biochemistry, Center for Cellular and Molecular Therapy (CTCMOL), Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Wagner L Batista
- Department of Microbiology, Immunology and Parasitology, Universidade Federal de São Paulo, São Paulo, Brazil; Department of Pharmaceutical Sciences, Universidade Federal de São Paulo, Diadema, São Paulo, Brazil.
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Maia VSC, Berzaghi R, Arruda DC, Machado FC, Loureiro LL, Melo PMS, Morais AS, Budu A, Travassos LR. PLP2-derived peptide Rb4 triggers PARP-1-mediated necrotic death in murine melanoma cells. Sci Rep 2022; 12:2890. [PMID: 35190586 PMCID: PMC8861012 DOI: 10.1038/s41598-022-06429-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 01/12/2022] [Indexed: 12/28/2022] Open
Abstract
Malignant melanoma is the main cause of death in patients with skin cancer. Overexpression of Proteolipid protein 2 (PLP2) increased tumor metastasis and the knockdown of PLP2 inhibited the growth and metastasis of melanoma cells. In the present work, we studied the antitumor activity of peptide Rb4 derived from protein PLP2. In vitro, Rb4 induced F-actin polymerization, prevented F-actin depolymerization and increased the ER-derived cytosolic calcium. Such effects were associated with necrosis of murine melanoma B16F10-Nex2 cells and with inhibition of the viability of human cancer cell lines. Loss of plasma membrane integrity, dilation of mitochondria, cytoplasm vacuolation and absence of chromatin condensation characterized tumor cell necrosis. Cleavage of PARP-1 and inhibition of RIP1 expression were also observed. In vivo, peptide Rb4 reduced the lung metastasis of tumor cells and delayed the subcutaneous melanoma growth in a syngeneic model. Rb4 induced the expression of two DAMPs molecules, HMGB1 and calreticulin, in B16F10-Nex2. Our results suggest that peptide Rb4 acts directly on tumor cells inducing the expression of DAMPs, which trigger the immunoprotective effect in vivo against melanoma cells. We suggest that peptide Rb4 is a promising compound to be developed as an anticancer drug.
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Affiliation(s)
| | - Rodrigo Berzaghi
- Experimental Oncology Unit, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
| | - Denise C Arruda
- Integrated Group of Biotechnology, University of Mogi das Cruzes, UMC, Mogi das Cruzes, SP, Brazil
| | - Fabrício C Machado
- Recepta Biopharma, São Paulo, Brazil.,Experimental Oncology Unit, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
| | - Leticia L Loureiro
- Experimental Oncology Unit, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
| | - Pollyana M S Melo
- Department of Biophysics, Federal University of São Paulo, São Paulo, Brazil
| | | | - Alexandre Budu
- Department of Biophysics, Federal University of São Paulo, São Paulo, Brazil
| | - Luiz R Travassos
- Recepta Biopharma, São Paulo, Brazil.,Experimental Oncology Unit, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, Brazil
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da Cunha FFM, Mugnol KCU, de Melo FM, Nascimento MVSQ, de Azevedo RA, Santos RTS, Magalhães JA, Miguel DC, Tada DB, Mortara RA, Travassos LR, Arruda DC. Peptide R18H from BRN2 Transcription Factor POU Domain Displays Antitumor Activity In Vitro and In Vivo and Induces Apoptosis in B16F10-Nex2 Cells. Anticancer Agents Med Chem 2019; 19:389-401. [PMID: 30417795 DOI: 10.2174/1871520618666181109164246] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 06/04/2018] [Revised: 10/10/2018] [Accepted: 10/19/2018] [Indexed: 01/22/2023]
Abstract
BACKGROUND BRN2 transcription factor is associated with the development of malignant melanoma. The cytotoxic activities and cell death mechanism against B16F10-Nex2 cells were determined with synthetic peptide R18H derived from the POU domain of the BRN2 transcription factor. OBJECTIVE To determine the cell death mechanisms and in vivo activity of peptide R18H derived from the POU domain of the BRN2 transcription factor against B16F10-Nex2 cells. METHODS Cell viability was determined by the MTT method. C57Bl/6 mice were challenged with B16F10-Nex2 cells and treated with R18H. To identify the type of cell death, we used TUNEL assay, Annexin V and PI, Hoechst, DHE, and determination of caspase activation and cytochrome c release. Transmission electron microscopy was performed to verify morphological alterations after peptide treatment. RESULTS Peptide R18H displayed antitumor activity in the first hours of treatment and the EC50% was calculated for 2 and 24h, being 0.76 ± 0.045 mM and 0.559 ± 0.053 mM, respectively. After 24h apoptosis was evident, based on DNA degradation, chromatin condensation, increase of superoxide anion production, phosphatidylserine translocation, activation of caspases 3 and 8, and release of extracellular cytochrome c in B16F10-Nex2 cells. The peptide cytotoxic activity was not affected by necroptosis inhibitors and treated cells did not release LDH in the extracellular medium. Moreover, in vivo antitumor activity was observed following treatment with peptide R18H. CONCLUSION Peptide R18H from BRN2 transcription factor induced apoptosis in B16F10-Nex2 and displayed antitumor activity in vivo.
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Affiliation(s)
- Fernanda F M da Cunha
- Nucleo Integrado de Biotecnologia (NIB), Universidade de Mogi das Cruzes, UMC, Mogi das Cruzes, SP, Brazil
| | - Katia C U Mugnol
- Centro Interdisciplinar de Investigacao Bioquimica (CIIB) Universidade de Mogi das Cruzes, UMC, Mogi das Cruzes, SP, Brazil
| | - Filipe M de Melo
- Departamento de Imunologia, Escola Paulista de Medicina, Universidade Federal de Sao Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Marta V S Q Nascimento
- Centro Interdisciplinar de Investigacao Bioquimica (CIIB) Universidade de Mogi das Cruzes, UMC, Mogi das Cruzes, SP, Brazil
| | - Ricardo A de Azevedo
- Unidade de Oncologia Experimental (UNONEX), Escola Paulista de Medicina, Universidade Federal de Sao Paulo (UNIFESP), Sao Paulo, SP, Brazil
| | - Raquel T S Santos
- Nucleo Integrado de Biotecnologia (NIB), Universidade de Mogi das Cruzes, UMC, Mogi das Cruzes, SP, Brazil
| | - Jéssica A Magalhães
- Laboratorio de Nanomateriais e Nanotoxicologia, Instituto de Ciencia e Tecnologia, Universidade Federal de Sao Paulo (UNIFESP), Sao Jose dos Campos, SP, Brazil
| | - Danilo C Miguel
- Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Dayane B Tada
- Laboratorio de Nanomateriais e Nanotoxicologia, Instituto de Ciencia e Tecnologia, Universidade Federal de Sao Paulo (UNIFESP), Sao Jose dos Campos, SP, Brazil
| | - Renato A Mortara
- Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, Universidade Federal de Sao Paulo (UNIFESP), Sao Paulo, SP, Brazil
| | - Luiz R Travassos
- Unidade de Oncologia Experimental (UNONEX), Escola Paulista de Medicina, Universidade Federal de Sao Paulo (UNIFESP), Sao Paulo, SP, Brazil
| | - Denise C Arruda
- Nucleo Integrado de Biotecnologia (NIB), Universidade de Mogi das Cruzes, UMC, Mogi das Cruzes, SP, Brazil
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Girola N, Matsuo AL, Figueiredo CR, Massaoka MH, Farias CF, Arruda DC, Azevedo RA, Monteiro HP, Resende-Lara PT, Cunha RLOR, Polonelli L, Travassos LR. The Ig V H complementarity-determining region 3-containing Rb9 peptide, inhibits melanoma cells migration and invasion by interactions with Hsp90 and an adhesion G-protein coupled receptor. Peptides 2016; 85:1-15. [PMID: 27575453 DOI: 10.1016/j.peptides.2016.08.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 08/17/2016] [Accepted: 08/22/2016] [Indexed: 12/30/2022]
Abstract
The present work aims at investigating the mechanism of action of the Rb9 peptide, which contains the VHCDR 3 sequence of anti-sodium-dependent phosphate transport protein 2B (NaPi2B) monoclonal antibody RebMab200 and displayed antitumor properties. Short peptides corresponding to the hypervariable complementarity-determining regions (CDRs) of immunoglobulins have been associated with antimicrobial, antiviral, immunomodulatory and antitumor activities regardless of the specificity of the antibody. We have shown that the CDR derived peptide Rb9 induced substrate hyperadherence, inhibition of cell migration and matrix invasion in melanoma and other tumor cell lines. Rb9 also inhibited metastasis of murine melanoma in a syngeneic mouse model. We found that Rb9 binds to and interferes with Hsp90 chaperone activity causing attenuation of FAK-Src signaling and downregulation of active Rac1 in B16F10-Nex2 melanoma cells. The peptide also bound to an adhesion G-protein coupled receptor, triggering a concentration-dependent synthesis of cAMP and activation of PKA and VASP signaling as well as IP-3 dependent Ca2+ release. Hsp90 is highly expressed on the cell surface of melanoma cells, and synthetic agents that target Hsp90 are promising cancer therapeutic drugs. Based on their remarkable antitumor effects, the CDR-H3-derived peptides from RebMab200, and particularly the highly soluble and stable Rb9, are novel candidates to be further studied as potential antitumor drugs, selectively acting on cancer cell motility and invasion.
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Affiliation(s)
- Natalia Girola
- Department of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Alisson L Matsuo
- Interdepartmental Group of Health Economics (Grides), Federal University of São Paulo, SP, Brazil
| | - Carlos R Figueiredo
- Department of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Mariana H Massaoka
- Department of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Camyla F Farias
- Department of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Denise C Arruda
- Núcleo Integrado de Biotecnologia, Universidade de Mogi das Cruzes, São Paulo, SP, Brazil
| | - Ricardo A Azevedo
- Biochemistry and Biophysics Laboratory, Butantan Institute, São Paulo, SP, Brazil
| | - Hugo P Monteiro
- Center for Cellular and Molecular Therapy (CTCMol) and Department of Biochemistry, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Pedro T Resende-Lara
- Computation and Bioinformatic Biology laboratory, Federal University of ABC, Santo André, São Paulo, SP, Brazil
| | - Rodrigo L O R Cunha
- Chemical Biology Laboratory, Natural and Human Sciences Center, Federal University of ABC, Santo André, São Paulo, SP, Brazil
| | - Luciano Polonelli
- Microbiology and Virology Unit, Department of Biomedical, Biotechnological and Translational Sciences, Universitá degli Studi di Parma, Parma, Italy
| | - Luiz R Travassos
- Department of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil; Recepta Biopharma, São Paulo, SP, Brazil.
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7
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Rabaça AN, Arruda DC, Figueiredo CR, Massaoka MH, Farias CF, Tada DB, Maia VC, Silva Junior PI, Girola N, Real F, Mortara RA, Polonelli L, Travassos LR. AC-1001 H3 CDR peptide induces apoptosis and signs of autophagy in vitro and exhibits antimetastatic activity in a syngeneic melanoma model. FEBS Open Bio 2016; 6:885-901. [PMID: 27642552 PMCID: PMC5011487 DOI: 10.1002/2211-5463.12080] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 04/20/2016] [Accepted: 04/21/2016] [Indexed: 12/19/2022] Open
Abstract
Antibody‐derived peptides modulate functions of the immune system and are a source of anti‐infective and antitumor substances. Recent studies have shown that they comprise amino acid sequences of immunoglobulin complementarity‐determining regions, but also fragments of constant regions. VH CDR3 of murine mAb AC‐1001 displays antimetastatic activities using B16F10‐Nex2 murine melanoma cells in a syngeneic model. The peptide was cytotoxic in vitro in murine and human melanoma cells inducing reactive oxygen species (ROS) and apoptosis by the intrinsic pathway. Signs of autophagy were also suggested by the increased expression of LC3/LC3II and Beclin 1 and by ultrastructural evidence. AC‐1001 H3 bound to both G‐ and F‐actin and inhibited tumor cell migration. These results are important evidence of the antitumor activity of Ig CDR‐derived peptides.
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Affiliation(s)
- Aline N Rabaça
- Unidade de Oncologia Experimental (UNONEX) Universidade Federal de São Paulo (UNIFESP) Brazil
| | - Denise C Arruda
- Unidade de Oncologia Experimental (UNONEX) Universidade Federal de São Paulo (UNIFESP) Brazil; Núcleo Integrado de Biotecnologia Universidade de Mogi das Cruzes Brazil
| | - Carlos R Figueiredo
- Unidade de Oncologia Experimental (UNONEX) Universidade Federal de São Paulo (UNIFESP) Brazil
| | - Mariana H Massaoka
- Unidade de Oncologia Experimental (UNONEX) Universidade Federal de São Paulo (UNIFESP) Brazil
| | - Camyla F Farias
- Unidade de Oncologia Experimental (UNONEX) Universidade Federal de São Paulo (UNIFESP) Brazil
| | - Dayane B Tada
- Departamento de Ciência e Tecnologia Universidade Federal de São Paulo (UNIFESP) São José dos Campos Brazil
| | | | - Pedro I Silva Junior
- Laboratório Especial de Toxinologia Aplicada Instituto Butantan São Paulo Brazil
| | - Natalia Girola
- Unidade de Oncologia Experimental (UNONEX) Universidade Federal de São Paulo (UNIFESP) Brazil
| | - Fernando Real
- Departamento de Parasitologia Universidade Federal de São Paulo (UNIFESP) Brazil
| | - Renato A Mortara
- Departamento de Parasitologia Universidade Federal de São Paulo (UNIFESP) Brazil
| | - Luciano Polonelli
- Microbiology and Virology Unit Department of Biomedical Biotechnological and Translational Sciences Universitá degli Studi di Parma Italy
| | - Luiz R Travassos
- Unidade de Oncologia Experimental (UNONEX) Universidade Federal de São Paulo (UNIFESP) Brazil
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8
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Figueiredo CR, Matsuo AL, Pereira FV, Rabaça AN, Farias CF, Girola N, Massaoka MH, Azevedo RA, Scutti JAB, Arruda DC, Silva LP, Rodrigues EG, Lago JHG, Travassos LR, Silva RMG. Pyrostegia venusta heptane extract containing saturated aliphatic hydrocarbons induces apoptosis on B16F10-Nex2 melanoma cells and displays antitumor activity in vivo. Pharmacogn Mag 2014; 10:S363-76. [PMID: 24991116 PMCID: PMC4078348 DOI: 10.4103/0973-1296.133284] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 09/25/2013] [Accepted: 05/28/2014] [Indexed: 12/30/2022] Open
Abstract
Background: Pyrostegia venusta (Ker. Gawl.) Miers (Bignoniacea) is a medicinal plant from the Brazilian Cerrado used to treat leucoderma and common diseases of the respiratory system. Objective: To investigate the antitumor activity of P.venusta extracts against melanoma. Materials and Methods: The cytotoxic activity and tumor induced cell death of heptane extract (HE) from P. venusta flowers was evaluated against murine melanoma B16F10-Nex2 cells in vitro and in a syngeneic model in vivo. Results: We found that HE induced apoptosis in melanoma cells by disruption of the mitochondrial membrane potential, induction of reactive oxygen species and late apoptosis evidenced by plasma membrane blebbing, cell shrinkage, chromatin condensation and DNA fragmentation, exposure of phosphatidylserine on the cell surface and activation of caspase-2,-3,-8,-9. HE was also protective against singeneyc subcutaneous melanoma HE compounds were also able to induce cell cycle arrest at G2/M phases on tumor cells. On fractionation of HE in silica gel we isolated a cytotoxic fraction that contained a mixture of saturated hydrocarbons identified by 1H NMR and GC-MS analyses. Predominant species were octacosane (C28H58-36%) and triacontane (C30H62-13%), which individually showed significant cytotoxic activity against murine melanoma B16F10-Nex2 cells in vitro and a very promising antitumor protection against subcutaneous melanoma in vivo. Conclusion: The results suggest that the components of the heptane extract, mainly octasane and triacontane, which showed antitumor properties in experimental melanoma upon regional administration, might also be therapeutic in human cancer, such as in the mostly epidermal and slowly invasive melanomas, such as acral lentiginous melanoma, as an adjuvant treatment to surgical excision.
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Affiliation(s)
- Carlos R Figueiredo
- Departments of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Alisson L Matsuo
- Departments of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Felipe V Pereira
- Departments of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Aline N Rabaça
- Departments of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Camyla F Farias
- Departments of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Nátalia Girola
- Departments of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Mariana H Massaoka
- Departments of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Ricardo A Azevedo
- Departments of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Jorge A B Scutti
- Departments of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Denise C Arruda
- Departments of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Luciana P Silva
- Department of Biological Sciences, Phytochemistry Laboratory. Universidade Estadual Paulista (UNESP), Assis, São Paulo State, Brazil
| | - Elaine G Rodrigues
- Departments of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - João Henrique G Lago
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo (UNIFESP), Diadema, São Paulo, Brazil
| | - Luiz R Travassos
- Departments of Microbiology, Immunology and Parasitology, Cell Biology Division and Experimental Oncology Unit (UNONEX), Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Regildo M G Silva
- Department of Biological Sciences, Phytochemistry Laboratory. Universidade Estadual Paulista (UNESP), Assis, São Paulo State, Brazil
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9
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Pereira FV, Arruda DC, Figueiredo CR, Massaoka MH, Matsuo AL, Bueno V, Rodrigues EG. FTY720 induces apoptosis in B16F10-NEX2 murine melanoma cells, limits metastatic development in vivo, and modulates the immune system. Clinics (Sao Paulo) 2013; 68:1018-27. [PMID: 23917669 PMCID: PMC3715017 DOI: 10.6061/clinics/2013(07)21] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 03/14/2013] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE Available chemotherapy presents poor control over the development of metastatic melanoma. FTY720 is a compound already approved by the Food and Drug Administration for the treatment of patients with multiple sclerosis. It has also been observed that FTY720 inhibits tumor growth in vivo (experimental models) and in vitro (animal and human tumor cells). The aim of this study was to evaluate the effects of FTY720 on a metastatic melanoma model and in tumor cell lines. METHODS We analyzed FTY720 efficacy in vivo in a syngeneic murine metastatic melanoma model, in which we injected tumor cells intravenously into C57BL/6 mice and then treated the mice orally with the compound for 7 days. We also treated mice and human tumor cell lines with FTY720 in vitro, and cell viability and death pathways were analyzed. RESULTS FTY720 treatment limited metastatic melanoma growth in vivo and promoted a dose-dependent decrease in the viability of murine and human tumor cells in vitro. Melanoma cells treated with FTY720 exhibited characteristics of programmed cell death, reactive oxygen species generation, and increased β-catenin expression. In addition, FTY720 treatment resulted in an immunomodulatory effect in vivo by decreasing the percentage of Foxp3+ cells, without interfering with CD8+ T cells or lymphocyte-producing interferon-gamma. CONCLUSION Further studies are needed using FTY720 as a monotherapy or in combined therapy, as different types of cancer cells would require a variety of signaling pathways to be extinguished.
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Affiliation(s)
- Felipe V Pereira
- Laboratório de Imunobiologia do Câncer, Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina (EPM-UNIFESP), Universidade Federal de São Paulo, São Paulo/SP, Brazil
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10
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Massaoka MH, Matsuo AL, Figueiredo CR, Farias CF, Girola N, Arruda DC, Scutti JAB, Romoff P, Favero OA, Ferreira MJP, Lago JHG, Travassos LR. Jacaranone induces apoptosis in melanoma cells via ROS-mediated downregulation of Akt and p38 MAPK activation and displays antitumor activity in vivo. PLoS One 2012; 7:e38698. [PMID: 22701695 PMCID: PMC3368838 DOI: 10.1371/journal.pone.0038698] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Accepted: 05/09/2012] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Malignant melanoma is a deadly type of metastatic skin cancer with increased incidence over the past 30 years. Despite the advanced knowledge on the biology, immunobiology and molecular genetics of melanoma, the alternatives of treatment are limited with poor prognosis. On clinical trials, natural products and among them redox-active quinones have been tested in the attempt to control the growth of cancer cells. Recently, we isolated jacaranone from Pentacalia desiderabilis, a benzoquinone derivative that showed a broad antitumor activity and protective anti-melanoma effect in a syngeneic model. The purified substance is active at micromolar concentrations, is not hemolytic, and is not toxic in naïve mice. METHODOLOGY/PRINCIPAL FINDINGS The jacaranone antitumor activity was shown against several human cancer cell lines in vitro. Moreover, the induction of apoptosis in murine melanoma cells and jacaranone antitumor activity in vivo, in a melanoma experimental model, were also shown. Jacaranone renders antiproliferative and proapoptotic responses in tumor cells, by acting on Akt and p38 MAPK signaling pathways through generation of reactive oxygen species (ROS). The free radical scavenger N-acetyl-cysteine (NAC) was able to completely suppress cell death induced by jacaranone as it blocked Akt downregulation, p38 MAPK activation as well as upregulation of proapoptotic Bax. Notably, treatment of melanoma growing subcutaneously in mice with jacaranone significantly extended the mean survival times in a dose-dependent manner. CONCLUSIONS/SIGNIFICANCE The results provide evidence for the mechanisms of action of jacaranone and emphasize the potential use of this quinone for the treatment of melanoma.
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Affiliation(s)
- Mariana H. Massaoka
- Unidade de Oncologia Experimental, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Alisson L. Matsuo
- Unidade de Oncologia Experimental, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Carlos R. Figueiredo
- Unidade de Oncologia Experimental, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Camyla F. Farias
- Unidade de Oncologia Experimental, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Natália Girola
- Unidade de Oncologia Experimental, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Denise C. Arruda
- Unidade de Oncologia Experimental, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Jorge A. B. Scutti
- Unidade de Oncologia Experimental, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Paulete Romoff
- Centro de Ciências e Humanidades e Centro de Ciências Biológicas e da Saúde, Universidade Presbiteriana Mackenzie, São Paulo, São Paulo, Brazil
| | - Oriana A. Favero
- Centro de Ciências e Humanidades e Centro de Ciências Biológicas e da Saúde, Universidade Presbiteriana Mackenzie, São Paulo, São Paulo, Brazil
| | - Marcelo J. P. Ferreira
- Centro de Ciências e Humanidades e Centro de Ciências Biológicas e da Saúde, Universidade Presbiteriana Mackenzie, São Paulo, São Paulo, Brazil
| | - João H. G. Lago
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Diadema, São Paulo, Brazil
| | - Luiz R. Travassos
- Unidade de Oncologia Experimental, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
- * E-mail:
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11
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Polonelli L, Ciociola T, Magliani W, Zanello PP, D'Adda T, Galati S, De Bernardis F, Arancia S, Gabrielli E, Pericolini E, Vecchiarelli A, Arruda DC, Pinto MR, Travassos LR, Pertinhez TA, Spisni A, Conti S. Peptides of the constant region of antibodies display fungicidal activity. PLoS One 2012; 7:e34105. [PMID: 22470523 PMCID: PMC3312352 DOI: 10.1371/journal.pone.0034105] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Accepted: 02/21/2012] [Indexed: 11/19/2022] Open
Abstract
Synthetic peptides with sequences identical to fragments of the constant region of different classes (IgG, IgM, IgA) of antibodies (Fc-peptides) exerted a fungicidal activity in vitro against pathogenic yeasts, such as Candida albicans, Candida glabrata, Cryptococcus neoformans, and Malassezia furfur, including caspofungin and triazole resistant strains. Alanine-substituted derivatives of fungicidal Fc-peptides, tested to evaluate the critical role of each residue, displayed unaltered, increased or decreased candidacidal activity in vitro. An Fc-peptide, included in all human IgGs, displayed a therapeutic effect against experimental mucosal and systemic candidiasis in mouse models. It is intriguing to hypothesize that some Fc-peptides may influence the antifungal immune response and constitute the basis for devising new antifungal agents.
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Affiliation(s)
- Luciano Polonelli
- Sezione di Microbiologia, Dipartimento di Patologia e Medicina di Laboratorio, Università degli Studi di Parma, Parma, Italy
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12
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Arruda DC, Santos LCP, Melo FM, Pereira FV, Figueiredo CR, Matsuo AL, Mortara RA, Juliano MA, Rodrigues EG, Dobroff AS, Polonelli L, Travassos LR. β-Actin-binding complementarity-determining region 2 of variable heavy chain from monoclonal antibody C7 induces apoptosis in several human tumor cells and is protective against metastatic melanoma. J Biol Chem 2012; 287:14912-22. [PMID: 22334655 DOI: 10.1074/jbc.m111.322362] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Complementarity-determining regions (CDRs) from monoclonal antibodies tested as synthetic peptides display anti-infective and antitumor activities, independent of the specificity of the native antibody. Previously, we have shown that the synthetic peptide C7H2, based on the heavy chain CDR 2 from monoclonal antibody C7, a mAb directed to a mannoprotein of Candida albicans, significantly reduced B16F10 melanoma growth and lung colony formation by triggering tumor apoptosis. The mechanism, however, by which C7H2 induced apoptosis in tumor cells remained unknown. Here, we demonstrate that C7H2 interacts with components of the tumor cells cytoskeleton, being rapidly internalized after binding to the tumor cell surface. Mass spectrometry analysis and in vitro validation revealed that β-actin is the receptor of C7H2 in the tumor cells. C7H2 induces β-actin polymerization and F-actin stabilization, linked with abundant generation of superoxide anions and apoptosis. Major phenotypes following peptide binding were chromatin condensation, DNA fragmentation, annexin V binding, lamin disruption, caspase 8 and 3 activation, and organelle alterations. Finally, we evaluated the cytotoxic efficacy of C7H2 in a panel of human tumor cell lines. All tumor cell lines studied were equally susceptible to C7H2 in vitro. The C7H2 amide without further derivatization significantly reduced lung metastasis of mice endovenously challenged with B16F10-Nex2 melanoma cells. No significant cytotoxicity was observed toward nontumorigenic cell lines on short incubation in vitro or in naïve mice injected with a high dose of the peptide. We believe that C7H2 is a promising peptide to be developed as an anticancer drug.
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Affiliation(s)
- Denise C Arruda
- Experimental Oncology Unit (UNONEX), Universidade Federal de São Paulo (UNIFESP), São Paulo SP 04023-062, Brazil
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13
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Matsuo AL, Figueiredo CR, Arruda DC, Pereira FV, Borin Scutti JA, Massaoka MH, Travassos LR, Sartorelli P, Lago JH. α-Pinene isolated from Schinus terebinthifolius Raddi (Anacardiaceae) induces apoptosis and confers antimetastatic protection in a melanoma model. Biochem Biophys Res Commun 2011; 411:449-54. [DOI: 10.1016/j.bbrc.2011.06.176] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Accepted: 06/28/2011] [Indexed: 12/11/2022]
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14
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Arruda DC, Miguel DC, Yokoyama-Yasunaka JK, Katzin AM, Uliana SR. Inhibitory activity of limonene against Leishmania parasites in vitro and in vivo. Biomed Pharmacother 2009; 63:643-9. [DOI: 10.1016/j.biopha.2009.02.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2008] [Revised: 02/19/2009] [Accepted: 02/24/2009] [Indexed: 11/30/2022] Open
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15
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Arruda DC, D'Alexandri FL, Katzin AM, Uliana SRB. Antileishmanial activity of the terpene nerolidol. Antimicrob Agents Chemother 2005; 49:1679-87. [PMID: 15855481 PMCID: PMC1087654 DOI: 10.1128/aac.49.5.1679-1687.2005] [Citation(s) in RCA: 132] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2004] [Revised: 10/26/2004] [Accepted: 01/10/2005] [Indexed: 11/20/2022] Open
Abstract
The activity of nerolidol, a sesquiterpene used as a food-flavoring agent and currently under testing as a skin penetration enhancer for the transdermal delivery of therapeutic drugs, was evaluated against Leishmania species. Nerolidol inhibited the growth of Leishmania amazonensis, L. braziliensis, and L. chagasi promastigotes and L. amazonensis amastigotes with in vitro 50% inhibitory concentrations of 85, 74, 75, and 67 microM, respectively. The treatment of L. amazonensis-infected macrophages with 100 microM nerolidol resulted in 95% reduction in infection rates. Inhibition of isoprenoid biosynthesis, as shown by reduced incorporation of [2-(14)C]mevalonic acid (MVA) or [1-(14)C]acetic acid precursors into dolichol, ergosterol, and ubiquinone, was observed in nerolidol-treated promastigotes. This drug effect can be attributed to the blockage of an early step in the mevalonate pathway, since incorporation of the precursor [1(n)-(3)H]farnesyl pyrophosphate in polyisoprenoids is not inhibited by nerolidol. L. amazonensis-infected BALB/c mice were treated with intraperitoneal doses of 100 mg/kg/day for 12 days or topically with 5 or 10% ointments for 4 weeks. Significant reduction of lesion sizes in nerolidol treated mice was observed for both treatment routes. However, long-term follow up indicated that the disease was not cured in this highly susceptible animal model. Nonetheless, the in vitro activity of nerolidol against these parasites may prove a useful tool for the development of new drugs for the treatment of leishmaniasis. In addition, biosynthesis of dolichols with 11 and 12 isoprene units was identified in Leishmania, as described for other trypanosomatids and Apicomplexa.
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Affiliation(s)
- Denise C Arruda
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, Av. Professor Lineu Prestes, 1374, CEP 05508-900, São Paulo, SP, Brazil
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16
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Nardi GM, Felippi R, DalBó S, Siqueira-Junior JM, Arruda DC, Delle Monache F, Timbola AK, Pizzolatti MG, Ckless K, Ribeiro-do-valle RM. Anti-inflammatory and antioxidant effects of Croton celtidifolius bark. Phytomedicine 2003; 10:176-184. [PMID: 12725573 DOI: 10.1078/094471103321659906] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Croton celtidifolius Baill commonly known as "sangue-de-adave" is a tree found in the Atlantic Forest of south of Brazil, mainly in Santa Catarina. The bark and leaf infusions of this medicinal plant have been popularly used for the treatment of inflammatory diseases. In this study we evaluated the anti-inflammatory and antioxidant properties of crude extract (CE), aqueous fraction (AqF), ethyl acetate fraction (EAF), butanolic fraction (BuF) and catechin, gallocatechin and sub-fractions, 19SF, 35SF and 63SF that contained a mixture of proanthocyanidins and were derived from the EAF fraction. The CE, AqF, EAF, BuF, catechin and sub-fractions 35SF and 63SF reduced paw edema induced by carrageenan. The CE, fractions, sub-fractions and isolated compounds showed antioxidant properties in vitro, all were able to scavenge superoxide anions at a concentration of 100 microg ml(-1). The EAF, catechin and gallocatechin were most effective in the deoxyribose assay, IC50 0.69 (0.44-1.06), 0.20 (0.11-0.39), 0.55 (0.28-1.08) microg x ml(-1) respectively. The CE and other fractions and sub-fractions inhibited deoxyribose degradation up to 1 microg x ml(-1). In the hydrophobic system only AqF did not show lipid peroxidation inhibition. The CE, other fractions, sub-fractions and isolated compounds inhibited lipidid peroxidation only at a concentration of 100 microg x ml(-1). In summary, this study demonstrates that Croton celtidifolius bark has significant anti-inflammatory and antioxidant activity.
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Affiliation(s)
- G M Nardi
- Departamento de Farmacologia, CCB, UFCS, Florianópolis, Brazil
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