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Santos LC, Oliveira VQ, Teixeira SC, Correia TML, Andrade LOSB, Polloni L, Marques LM, Clissa PB, Baldo C, Ferro EAV, Gusmão ACMDM, Silva MJB, Sanabani SS, Ávila VDMR, Lopes DS. PLA 2-MjTX-II from Bothrops moojeni snake venom exhibits antimetastatic and antiangiogenic effects on human lung cancer cells. Toxicon 2024; 243:107742. [PMID: 38705486 DOI: 10.1016/j.toxicon.2024.107742] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 04/29/2024] [Accepted: 04/30/2024] [Indexed: 05/07/2024]
Abstract
Phospholipases A2 (PLA2s) from snake venom possess antitumor and antiangiogenic properties. In this study, we evaluated the antimetastatic and antiangiogenic effects of MjTX-II, a Lys49 PLA2 isolated from Bothrops moojeni venom, on lung cancer and endothelial cells. Using in vitro and ex vivo approaches, we demonstrated that MjTX-II reduced cell proliferation and inhibited fundamental processes for lung cancer cells (A549) growth and metastasis, such as adhesion, migration, invasion, and actin cytoskeleton decrease, without significantly interfering with non-tumorigenic lung cells (BEAS-2B). Furthermore, MjTX-II caused cell cycle alterations, increased reactive oxygen species production, modulated the expression of pro- and antiangiogenic genes, and decreased vascular endothelial growth factor (VEGF) expression in HUVECs. Finally, MjTX-II inhibited ex vivo angiogenesis processes in an aortic ring model. Therefore, we conclude that MjTX-II exhibits antimetastatic and antiangiogenic effects in vitro and ex vivo and represents a molecule that hold promise as a pharmacological model for antitumor therapy.
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Affiliation(s)
- Luísa Carregosa Santos
- Institute Multidisciplinary in Health, Federal University of Bahia (UFBA), Vitória da Conquista, BA, Brazil
| | - Vinícius Queiroz Oliveira
- Institute Multidisciplinary in Health, Federal University of Bahia (UFBA), Vitória da Conquista, BA, Brazil
| | - Samuel Cota Teixeira
- Department of Immunology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | | | | | - Lorena Polloni
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, (UFU), Uberlândia, MG, Brazil
| | - Lucas Miranda Marques
- Institute Multidisciplinary in Health, Federal University of Bahia (UFBA), Vitória da Conquista, BA, Brazil
| | | | - Cristiani Baldo
- Department of Biochemistry and Biotechnology, State University of Londrina (UEL), Londrina, PR, Brazil
| | - Eloisa Amália Vieira Ferro
- Department of Immunology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | | | - Marcelo José Barbosa Silva
- Department of Immunology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | - Sabri Saeed Sanabani
- Laboratory of Medical Investigation in Dermatology and Immunodeficiency, São Paulo Institute of Tropical Medicine, School of Medicine, University of São Paulo (USP), São Paulo, SP, Brazil
| | - Veridiana de Melo Rodrigues Ávila
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, (UFU), Uberlândia, MG, Brazil.
| | - Daiana Silva Lopes
- Institute Multidisciplinary in Health, Federal University of Bahia (UFBA), Vitória da Conquista, BA, Brazil.
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Alves de Melo Fernandes T, Rafaella Costa T, de Paula Menezes R, Arantes de Souza M, Gomes Martins CH, Junior NN, Gobbi Amorim F, Quinton L, Polloni L, Teixeira SC, Amália Vieira Ferro E, Soares AM, de Melo Rodrigues Ávila V. Bothrops snake venom L-amino acid oxidases impair biofilm formation of clinically relevant bacteria. Toxicon 2024; 238:107569. [PMID: 38122835 DOI: 10.1016/j.toxicon.2023.107569] [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: 09/26/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
The present work addressed the abilities of two L-amino acid oxidases isolated from Bothrops moojeni (BmooLAAO-I) and Bothrops jararacussu (BjussuLAAO-II) snake venoms to control the growth and prevent the biofilm formation of clinically relevant bacterial pathogens. Upon S. aureus (ATCC BAA44) and S. aureus (clinical isolates), BmooLAAO-I (MIC = 0.12 and 0.24 μg/mL, respectively) and BjussuLAAO-II (MIC = 0.15 μg/mL) showed a potent bacteriostatic effect. Against E. coli (ATCC BAA198) and E. coli (clinical isolates), BmooLAAO-I (MIC = 15.6 and 62.5 μg/mL, respectively) and BjussuLAAO-II (MIC = 4.88 and 9.76 μg/mL, respectively) presented a lower extent effect. Also, BmooLAAO-I (MICB50 = 0.195 μg/mL) and BjussuLAAO-II (MICB50 = 0.39 μg/mL) inhibited the biofilm formation of S. aureus (clinical isolates) in 88% and 89%, respectively, and in 89% and 53% of E. coli (clinical isolates). Moreover, scanning electron microscopy confirmed that the toxins affected bacterial morphology by increasing the roughness of the cell surface and inhibited the biofilm formation. Furthermore, analysis of the tridimensional structures of the toxins showed that the surface-charge distribution presents a remarkable positive region close to the glycosylation motif, which is more pronounced in BmooLAAO-I than BjussuLAAO-II. This region may assist the interaction with bacterial and biofilm surfaces. Collectively, our findings propose that venom-derived antibiofilm agents are promising biotechnological tools which could provide novel strategies for biofilm-associated infections.
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Affiliation(s)
- Thales Alves de Melo Fernandes
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Tássia Rafaella Costa
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Ralciane de Paula Menezes
- Laboratory of Antimicrobial Testing, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Meliza Arantes de Souza
- Laboratory of Antimicrobial Testing, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Carlos Henrique Gomes Martins
- Laboratory of Antimicrobial Testing, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Nilson Nicolau Junior
- Laboratory of Molecular Modeling, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | | | - Loïc Quinton
- Mass Spectrometry Laboratory, MolSys RU, University of Liège, 4000 Liège, Belgium
| | - Lorena Polloni
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Samuel Cota Teixeira
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, MG, Brazil
| | - Eloisa Amália Vieira Ferro
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, MG, Brazil
| | - Andreimar Martins Soares
- Laboratory of Biotechnology of Proteins and Bioactive Compounds in the Western Amazon (LABIOPROT), Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Federal University of Rondônia (UNIR), And National Institute of Science and Technology of Epidemiology of the Western Amazon, INCT-EPIAMO, Porto Velho-RO, Brazil
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3
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de Melo Fernandes TA, Teixeira SC, Costa TR, Rosini AM, de Souza G, Polloni L, Barbosa BDF, Silva MJB, Ferro EAV, Ávila VDMR. BjussuLAAO-II, an l-amino acid oxidase from Bothrops jararacussu snake venom, impairs Toxoplasma gondii infection in human trophoblast cells and villous explants from the third trimester of pregnancy. Microbes Infect 2023; 25:105123. [PMID: 36870599 DOI: 10.1016/j.micinf.2023.105123] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 11/09/2022] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
One-third of the world's population is estimated to be affected by toxoplasmosis. Pregnancy-related Toxoplasma gondii infection can cause vertical transmission, infect the fetus, and cause miscarriage, stillbirth, and fetal death. The current study showed that both human trophoblast cells (BeWo lineage) and human explant villous were resistant to T. gondii infection after incubation with BjussuLAAO-II, an l-amino acid oxidase isolated from Bothrops jararacussu. Almost 90% of the parasite's ability to proliferate in BeWo cells was decreased by the toxin at 1.56 μg/mL and showed an irreversible anti-T. gondii effect. Also, BjussuLAAO-II impaired the key events of adhesion and invasion of T. gondii tachyzoites in BeWo cells. BjussuLAAO-II antiparasitic properties were associated with the intracellular production of reactive oxygen species and hydrogen peroxide, since the presence of catalase restored the parasite's growth and invasion. In addition, T. gondii growth in human villous explants was decreased to approximately 51% by the toxin treatment at 12.5 μg/mL. Furthermore, BjussuLAAO-II treatment altered IL-6, IL-8, IL-10 and MIF cytokines levels, assuming a pro-inflammatory profile in the control of T. gondii infection. This study contributes to the potential use of a snake venom l-amino acid oxidase for the development of agents against congenital toxoplasmosis and the discovery of new targets in parasites and host cells.
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Affiliation(s)
- Thales Alves de Melo Fernandes
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, St. Acre s/n, 38402-902, Uberlândia, MG, Brazil.
| | - Samuel Cota Teixeira
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Campus Umuarama, Av. Para, 1720, 38400-239, Uberlândia, MG, Brazil.
| | - Tássia Rafaela Costa
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, St. Acre s/n, 38402-902, Uberlândia, MG, Brazil.
| | - Alessandra Monteiro Rosini
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Campus Umuarama, Av. Para, 1720, 38400-239, Uberlândia, MG, Brazil.
| | - Guilherme de Souza
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Campus Umuarama, Av. Para, 1720, 38400-239, Uberlândia, MG, Brazil.
| | - Lorena Polloni
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, St. Acre s/n, 38402-902, Uberlândia, MG, Brazil.
| | - Bellisa de Freitas Barbosa
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Campus Umuarama, Av. Para, 1720, 38400-239, Uberlândia, MG, Brazil.
| | - Marcelo José Barbosa Silva
- Department of Immunology, Institute of Biomedical Sciences, Campus Umuarama, Av. Para, 1720, 38400-239, Uberlândia, MG, Brazil.
| | - Eloisa Amália Vieira Ferro
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Campus Umuarama, Av. Para, 1720, 38400-239, Uberlândia, MG, Brazil.
| | - Veridiana de Melo Rodrigues Ávila
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, St. Acre s/n, 38402-902, Uberlândia, MG, Brazil.
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Polloni L, Costa TR, Morais LP, Borges BC, Teixeira SC, de Melo Fernandes TA, Correia LIV, Bastos LM, Amorim FG, Quinton L, Soares AM, Silva MJB, Ferro EAV, Lopes DS, de Melo Rodrigues Ávila V. Oxidative stress induced by Pollonein-LAAO, a new L-amino acid oxidase from Bothrops moojeni venom, prompts prostate tumor spheroid cell death and impairs the cellular invasion process in vitro. Cell Signal 2023:110785. [PMID: 37364850 DOI: 10.1016/j.cellsig.2023.110785] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 03/20/2023] [Revised: 06/07/2023] [Accepted: 06/22/2023] [Indexed: 06/28/2023]
Abstract
Cancer cells produce abnormal levels of reactive oxygen species (ROS) that contribute to promote their malignant phenotype. In this framework, we hypothesized that the change in ROS concentration above threshold could impair key events of prostate cancer cells (PC-3) progression. Our results demonstrated that Pollonein-LAAO, a new L-amino acid oxidase obtained from Bothrops moojeni venom, was cytotoxic to PC-3 cells in two-dimensional and in tumor spheroid assays. Pollonein-LAAO was able to increase the intracellular ROS generation that culminates in cell death from apoptosis by both intrinsic and extrinsic pathways due to the up-regulation of TP53, BAX, BAD, TNFRSF10B and CASP8. Additionally, Pollonein-LAAO reduced mitochondrial membrane potential and caused G0/G1 phase to delay, due to the up-regulation of CDKN1A and the down-regulation of the expression of CDK2 and E2F. Interestingly, Pollonein-LAAO inhibited critical steps of the cellular invasion process (migration, invasion and adhesion), due to the down-regulation of SNAI1, VIM, MMP2, ITGA2, ITGAV and ITGB3. Furthermore, the Pollonein-LAAO effects were associated with the intracellular ROS production, since the presence of catalase restored the invasiveness of PC-3 cells. In this sense, this study contributes to the potential use of Pollonein-LAAO as ROS-based agent to enhance the current understanding of cancer treatment strategies.
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Affiliation(s)
- Lorena Polloni
- Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil.
| | - Tássia Rafaella Costa
- Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Lorena Pinheiro Morais
- Institute of Biomedical Sciences, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Bruna Cristina Borges
- Institute of Biomedical Sciences, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Samuel Cota Teixeira
- Institute of Biomedical Sciences, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | | | | | - Luciana Machado Bastos
- Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | | | - Loïc Quinton
- Department of Chemistry, University of Liège, Liège, Belgium
| | - Andreimar Martins Soares
- Oswaldo Cruz Foundation (FIOCRUZ) Rondônia, Federal University of Rondônia (UNIR), and National Institute of Science and Technology of Epidemiology of the Western Amazon (INCT-EPIAMO), Porto Velho, RO, Brazil
| | | | | | - Daiana Silva Lopes
- Multidisciplinary Institute for Health, Federal University of Bahia - UFBA, Vitoria da Conquista, BA, Brazil
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de Freitas V, Costa TR, Nogueira AR, Polloni L, Alves de Melo Fernandes T, Correia LIV, Borges BC, Teixeira SC, Silva MJB, Amorim FG, Quinton L, Saraiva AL, Espindola FS, Iwai LK, Rodrigues RS, Yoneyama KAG, de Melo Rodrigues Ávila V. Biochemical characterization and assessment of leishmanicidal effects of a new L-amino acid oxidase from Crotalus durissus collilineatus snake venom (CollinLA AO-I). Toxicon 2023; 230:107156. [PMID: 37169266 DOI: 10.1016/j.toxicon.2023.107156] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 05/04/2023] [Accepted: 05/08/2023] [Indexed: 05/13/2023]
Abstract
This study reports the isolation of CollinLAAO-I, a new L-amino acid oxidase from Crotalus durissus collilineatus snake venom, its biochemical characterization and leishmanicidal potential in Leishmania spp. CollinLAAO-I (63.1 kDa) was successfully isolated with high purity using two chromatographic steps and represents 2.5% of total venom proteins. CollinLAAO-I displayed high enzymatic activity (4262.83 U/mg/min), significantly reducing after 28 days. The enzymatic activity of CollinLAAO-I revealed higher affinity for hydrophobic amino acids such as L-leucine, high enzymatic activity in a wide pH range (6.0-10.0), at temperatures from 0 to 25 °C, and showed complete inhibition in the presence of Na+ and K+. Cytotoxicity assays revealed IC50 of 18.49 and 11.66 μg/mL for Leishmania (L.) amazonensis and Leishmania (L.) infantum, respectively, and the cytotoxicity was completely suppressed by catalase. CollinLAAO-I significantly increased the intracellular concentration of reactive oxygen species (ROS) and reduced the mitochondrial potential of both Leishmania species. Furthermore, CollinLAAO-I decreased the parasite capacity to infect macrophages by around 70%, indicating that even subtoxic concentrations of CollinLAAO-I can interfere with Leishmania vital processes. Thus, the results obtained for CollinLAAO-I provide important support for developing therapeutic strategies against leishmaniasis.
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Affiliation(s)
- Vitor de Freitas
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Tássia Rafaella Costa
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Amanda Rodrigues Nogueira
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Lorena Polloni
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Thales Alves de Melo Fernandes
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Lucas Ian Veloso Correia
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Bruna Cristina Borges
- Laboratory of Osteoimmunology and Tumor Immunology, Institute of Biomedical Sciences, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Samuel Cota Teixeira
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Marcelo José Barbosa Silva
- Laboratory of Osteoimmunology and Tumor Immunology, Institute of Biomedical Sciences, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Fernanda Gobbi Amorim
- Laboratory of Mass Spectrometry, Department of Chemistry, University of Liège, Liège, Belgium
| | - Loïc Quinton
- Laboratory of Mass Spectrometry, Department of Chemistry, University of Liège, Liège, Belgium
| | - André Lopes Saraiva
- Laboratory of Biochemistry and Molecular Biology, Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Foued Salmen Espindola
- Laboratory of Biochemistry and Molecular Biology, Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Leo Kei Iwai
- Laboratory of Applied Toxinology (LETA) and Center of Toxins, Immune-Response and Cell Signaling (CeTICS), Butantan Institute, São Paulo, SP, Brazil
| | - Renata Santos Rodrigues
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Kelly Aparecida Geraldo Yoneyama
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil
| | - Veridiana de Melo Rodrigues Ávila
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlândia - UFU, Uberlândia, MG, Brazil.
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Van Petten de Vasconcelos Azevedo F, Lopes DS, Zóia MAP, Correia LIV, Saito N, Fonseca BB, Polloni L, Teixeira SC, Goulart LR, de Melo Rodrigues Ávila V. A New Approach to Inhibiting Triple-Negative Breast Cancer: In Vitro, Ex Vivo and In Vivo Antiangiogenic Effect of BthTx-II, a PLA 2-Asp-49 from Bothrops jararacussu Venom. Biomolecules 2022; 12:258. [PMID: 35204758 PMCID: PMC8961627 DOI: 10.3390/biom12020258] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 12/28/2021] [Accepted: 01/05/2022] [Indexed: 12/10/2022] Open
Abstract
Phospholipases A2 (PLA2) represent a superfamily of enzymes widely distributed in living organisms, with a broad spectrum of pharmacological activities and therapeutic potential. Anti-angiogenic strategies have become one of the main tools in fighting cancer. In this sense, the present work reports the inhibition of tumor angiogenesis induced by Asp-49 BthTX-II using in vitro, ex vivo and in vivo approaches. We demonstrate that BthTx-II inhibited cell adhesion, proliferation, and migration of human umbilical vein endothelial cells (HUVEC), as well as caused a reduction in the levels of endothelial growth factor (VEGF) during in vitro angiogenesis assays. BthTx-II was also able to inhibit the sprouting angiogenic process, by the ex vivo germination assay of the aortic ring; in addition, this toxin inhibited the migration and proliferation of HUVEC in co-culture with triple-negative breast cancer cells (e.g., MDA-MB-231 cells). Finally, in vivo tumor suppression and anti-angiogenic activities were analyzed using MDA-MB-231 cells with Matrigel injected into the chorioallantoic membrane of chicken embryo (CAM) for 7 days treatment with BthTx-II, showing a considerable reduction in vessel caliber, on the size and weight of tumors. Together, these results suggest an important antiangiogenic and antitumor role for BthTx-II, as a potential prototype for the development of new tools and antitumor drugs in cancer therapy.
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Affiliation(s)
- Fernanda Van Petten de Vasconcelos Azevedo
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlandia, Uberlândia 38408-100, MG, Brazil; (L.I.V.C.); (L.P.)
- Laboratory of Nanobiotechnology, Institute of Biotechnology, Federal University of Uberlandia, Uberlândia 38408-100, MG, Brazil; (M.A.P.Z.); (N.S.); (L.R.G.)
| | - Daiana Silva Lopes
- Multidisciplinary Institute of Health, Federal University of Bahia, Vitoria da Conquista, Salvador 40170-110, BA, Brazil;
| | - Mariana Alves Pereira Zóia
- Laboratory of Nanobiotechnology, Institute of Biotechnology, Federal University of Uberlandia, Uberlândia 38408-100, MG, Brazil; (M.A.P.Z.); (N.S.); (L.R.G.)
| | - Lucas Ian Veloso Correia
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlandia, Uberlândia 38408-100, MG, Brazil; (L.I.V.C.); (L.P.)
- Laboratory of Nanobiotechnology, Institute of Biotechnology, Federal University of Uberlandia, Uberlândia 38408-100, MG, Brazil; (M.A.P.Z.); (N.S.); (L.R.G.)
| | - Natieli Saito
- Laboratory of Nanobiotechnology, Institute of Biotechnology, Federal University of Uberlandia, Uberlândia 38408-100, MG, Brazil; (M.A.P.Z.); (N.S.); (L.R.G.)
| | | | - Lorena Polloni
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlandia, Uberlândia 38408-100, MG, Brazil; (L.I.V.C.); (L.P.)
| | - Samuel Cota Teixeira
- Department of Immunology, Biomedical Sciences Institute, Federal University of Uberlandia, Uberlândia 38408-100, MG, Brazil;
| | - Luiz Ricardo Goulart
- Laboratory of Nanobiotechnology, Institute of Biotechnology, Federal University of Uberlandia, Uberlândia 38408-100, MG, Brazil; (M.A.P.Z.); (N.S.); (L.R.G.)
| | - Veridiana de Melo Rodrigues Ávila
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlandia, Uberlândia 38408-100, MG, Brazil; (L.I.V.C.); (L.P.)
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7
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Almeida JDC, Silva RT, Zanetti RD, Moreira MB, Portes MC, Polloni L, de Vasconcelos Azevedo FV, Von Poelhsitz G, Pivatto M, Netto AV, Ávila VDMR, Manieri KF, Pavan FR, Da Costa Ferreira AM, Guerra W. DNA interactions, antitubercular and cytotoxic activity of heteroleptic CuII complexes containing 1,10-phenanthroline. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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8
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Lopes JC, Botelho FV, Barbosa Silva MJ, Silva SF, Polloni L, Alves Machado PH, Rodrigues de Souza T, Goulart LR, Silva Caldeira PP, Pereira Maia EC, Morelli S, de Oliveira-Júnior RJ. In vitro and in vivo antitumoral activity of a ternary copper (II) complex. Biochem Biophys Res Commun 2020; 533:1021-1026. [PMID: 33012510 DOI: 10.1016/j.bbrc.2020.09.104] [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: 09/04/2020] [Accepted: 09/23/2020] [Indexed: 11/17/2022]
Abstract
Recently, a high number of copper derivatives has been evaluated as DNA-targeting metallodrugs, due to the lower toxicity and its potential to cleave DNA. Several strategies have been testing to develop metal compounds effective against tumour cells. In this work, the ternary copper (doxycycline)-(1,10-phenanthroline) complex [Cu(dox)(phen)]2+ was especially designed as an antitumoral drug, previously showing high cytotoxicity and DNA cleavage activity. We aimed to further investigate the in vitro cytotoxic activity in both tumoral and non-tumoral cells, in vitro genotoxic potential, and in vivo antitumor activity using BALB/C mouse injected with sarcoma S180 and Ehrlich cell lines. Our results indicated that this compound exhibits a moderate genotoxic potential, with selective growth inhibition of tumor cells, especially the murine melanoma B16F10. Its main mechanism of action seems to be through ROS generation. We have further shown a significant reduction of the implanted tumor size in the animal model, suggesting that this compound has great antitumoral potential against many tumor types. [Cu(dox)(phen)]2+ is selectively cytotoxic for melanoma B16F10 and showed high chemotherapeutic potential in vivo against implanted sarcoma S180 and Ehrlich ascites tumours.
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Affiliation(s)
- Jeyson Césary Lopes
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, MG, Brazil; Laboratory of Cytogenetics and Mutagenesis, University Center of Patos de Minas, Patos de Minas, MG, Brazil.
| | | | | | - Suélen Fernandes Silva
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, MG, Brazil; Chemistry Institute, São Paulo State University - UNESP, Araraquara, SP, Brazil.
| | - Lorena Polloni
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | | | - Tiago Rodrigues de Souza
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Luiz Ricardo Goulart
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Priscila Pereira Silva Caldeira
- Department of Chemistry, Federal Center of Technological Education of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Sandra Morelli
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, MG, Brazil
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Paixão DA, de Oliveira BC, Almeida JDC, Sousa LM, Lopes CD, Carneiro ZA, Tezuka DY, Clavijo JCT, Ellena J, Polloni L, Machado PH, de Albuquerque S, de Oliveira Júnior RJ, Guilardi S, Guerra W. Crystal structure, anti-Trypanosoma cruzi and cytotoxic activities of Cu(II) complexes bearing β-diketone and α-diimine ligands. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119164] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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10
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Oliveira VC, Constante SAR, Polloni L, Orsolin PC, Silva-Oliveira RG, Machado NM, de Oliveira-Júnior RJ, Nepomuceno JC. Protective effect of aspirin against mitomycin C-induced carcinogenicity, assessed by the test for detection of epithelial tumor clones (warts) in Drosophila melanogaster. Drug Chem Toxicol 2017; 41:330-337. [PMID: 29281929 DOI: 10.1080/01480545.2017.1415926] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The present study assessed the protective effect of aspirin against carcinogenicity induced by mitomycin C (MMC) by the test for detection of warts/epithelial tumor clones in Drosophila melanogaster. Larvae were treated with different concentrations of aspirin alone (10, 20 or 40 mg/mL) or aspirin in association with MMC. MMC and ultrapure water were employed as the positive and negative control, respectively. Antioxidant activity was determined using the DPPH method. For performing cytotoxicity assay on HeLa cells, the aspirin concentrations used ranged from 200 mmol/L to 3,125 mmol/L. For assessment of apoptosis and necrosis, cells were incubated for 24 h with complete medium in the absence (control group) or presence of aspirin (12.5 mmol/L and 25 mmol/L). The results obtained in the assessment of the possible carcinogenic effects of aspirin at the three concentrations tested indicate no statistically significant increase in tumor frequency compared to the negative control. The anticarcinogenic activity assessment, where the larvae of D. melanogaster were previously induced to tumor formation by MMC and later treated with aspirin, showed a statistically significant reduction in the number of tumors compared to the positive control. Antioxidant activity across the three aspirin concentrations (10, 20 or 40 mg/mL) ranged from 20.81% to 26.5%. It was observed that aspirin reduced growth viability of HeLa cells in a concentration-dependent manner in comparison with the control. These results indicate that aspirin did not induce tumors in Drosophila and reduced MMC-induced carcinogenicity. The antioxidant activity and apoptosis induction appear to be the main mechanisms involved in reducing the frequency of tumors.
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Affiliation(s)
- Victor Constante Oliveira
- a Genetics and Biochemistry Institute , Federal University of Uberlandia , Uberlandia , Brazil.,b Laboratory of Cytogenetics and Mutagenesis , University Center of Patos de Minas , Patos de Minas , Brazil
| | | | - Lorena Polloni
- c Laboratory of Animal Cytogenetics , Genetics and Biochemistry Institute, Federal University of Uberlândia , Uberlandia , Brazil
| | - Priscila Capelari Orsolin
- b Laboratory of Cytogenetics and Mutagenesis , University Center of Patos de Minas , Patos de Minas , Brazil
| | | | - Nayane Moreira Machado
- b Laboratory of Cytogenetics and Mutagenesis , University Center of Patos de Minas , Patos de Minas , Brazil
| | - Robson José de Oliveira-Júnior
- c Laboratory of Animal Cytogenetics , Genetics and Biochemistry Institute, Federal University of Uberlândia , Uberlandia , Brazil
| | - Júlio César Nepomuceno
- a Genetics and Biochemistry Institute , Federal University of Uberlandia , Uberlandia , Brazil.,b Laboratory of Cytogenetics and Mutagenesis , University Center of Patos de Minas , Patos de Minas , Brazil
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11
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Polloni L, DunnGalvin A, Ferruzza E, Bonaguro R, Lazzarotto F, Toniolo A, Celegato N, Muraro A. Coping strategies, alexithymia and anxiety in young patients with food allergy. Allergy 2017; 72:1054-1060. [PMID: 27886387 DOI: 10.1111/all.13097] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Food allergy is major public health concern affecting nearly 15 million Americans and 80 million Europeans. Risk of anaphylaxis and implications for social activities affect patients' quality of life and psychological well-being. We previously found that young patients reported higher levels of alexithymia (difficulty in recognizing and expressing emotions) compared with healthy peers and may influence affect, management style and clinical outcomes. This study aimed to explore links between coping strategies, alexithymia and anxiety among food-allergic adolescents and young adults. METHODS Ninety-two patients with IgE-mediated food allergy (mean age 18.6 years) completed Coping Orientation to Problems Experienced Inventory, Toronto Alexithymia Scale and Trait Anxiety subscale of State-Trait Anxiety Inventory. Multivariate analyses of variance assessed differences and associations between subgroups on the scales. RESULTS Significant differences found between alexithymia levels in coping style were explained by Avoidance strategies. 'Avoidance' had the highest contribution in explaining alexithymia, followed by trait anxiety, age, anaphylaxis and social support. Respondents with higher alexithymia use avoidance as coping strategy over and above other coping strategies such as problem-solving and positive thinking, are younger, will have experienced anaphylaxis and will have lower social support. CONCLUSIONS Recognizing the specific role of affect regulation in health behaviours may constitute an important step in supporting patients to explore more adaptive strategies.
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Affiliation(s)
- L. Polloni
- Food Allergy Referral Centre for Diagnosis and Treatment; Veneto Region; Department of Woman and Child Health; Padua University Hospital; Padua Italy
| | - A. DunnGalvin
- School of Applied Psychology; University College Cork; Cork City Ireland
- Department of Paediatrics and Child Health; Cork University Hospital; Cork City Ireland
| | - E. Ferruzza
- Department of Developmental Psychology and Socialization; University of Padua; Padua Italy
| | - R. Bonaguro
- Food Allergy Referral Centre for Diagnosis and Treatment; Veneto Region; Department of Woman and Child Health; Padua University Hospital; Padua Italy
| | - F. Lazzarotto
- Food Allergy Referral Centre for Diagnosis and Treatment; Veneto Region; Department of Woman and Child Health; Padua University Hospital; Padua Italy
| | - A. Toniolo
- Food Allergy Referral Centre for Diagnosis and Treatment; Veneto Region; Department of Woman and Child Health; Padua University Hospital; Padua Italy
| | - N. Celegato
- Food Allergy Referral Centre for Diagnosis and Treatment; Veneto Region; Department of Woman and Child Health; Padua University Hospital; Padua Italy
| | - A. Muraro
- Food Allergy Referral Centre for Diagnosis and Treatment; Veneto Region; Department of Woman and Child Health; Padua University Hospital; Padua Italy
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12
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Polloni L, Ferruzza E, Ronconi L, Toniolo A, Lazzarotto F, Bonaguro R, Celegato N, Muraro A. Assessment of children's nutritional attitudes before oral food challenges to identify patients at risk of food reintroduction failure: a prospective study. Allergy 2017; 72:731-736. [PMID: 27659406 DOI: 10.1111/all.13055] [Citation(s) in RCA: 10] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/19/2016] [Indexed: 01/23/2023]
Abstract
BACKGROUND Inappropriate dietary eliminations may impair quality of life, affect children's growth and unnecessarily impact on healthcare costs. Previous retrospective studies reported that around 25% of children continue a food-avoidance diet despite a negative oral food challenge (OFC). A definite pattern has not been found yet for patients not reintroducing the food. This study aimed to examine the role of child's nutritional attitudes and maternal anxiety in reintroducing food after a negative OFC. METHODS A prospective study was conducted involving 81 mothers of children with IgE-mediated food allergy. They completed a survey on nutritional behaviour and attitudes and the State-Trait Anxiety Inventory on the day of OFC and 6 months later. RESULTS In total, 11.1% of children never or rarely ate the food after a negative OFC. Consumption of the reintroduced food is positively correlated to child's interest in tasting new foods before and after OFC and to changes in child's nutritional habits after OFC. It is negatively correlated to monotony of the diet after OFC. No correlations were found with other participants' characteristics or maternal anxiety. State anxiety significantly decreased after the OFC. A correlation was found between trait and state anxiety and the degree of change in nutritional habits after OFC. CONCLUSIONS Evaluating child's approach towards food before the OFC is a promising approach to identify patients at risk of food reintroduction failure. Furthermore, it underlined the importance of reassessing food consumption in all patients after a negative OFC and supporting patients in the reintroduction of food.
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Affiliation(s)
- L. Polloni
- Food Allergy Referral Centre for Diagnosis and Treatment; Veneto Region; Department of Women and Child Health; Padua University Hospital; Padua Italy
| | - E. Ferruzza
- Department of Developmental Psychology and Socialization; University of Padua; Padua Italy
| | - L. Ronconi
- Department of Philosophy, Sociology, Education and Applied Psychology; University of Padua; Padua Italy
| | - A. Toniolo
- Food Allergy Referral Centre for Diagnosis and Treatment; Veneto Region; Department of Women and Child Health; Padua University Hospital; Padua Italy
| | - F. Lazzarotto
- Food Allergy Referral Centre for Diagnosis and Treatment; Veneto Region; Department of Women and Child Health; Padua University Hospital; Padua Italy
| | - R. Bonaguro
- Food Allergy Referral Centre for Diagnosis and Treatment; Veneto Region; Department of Women and Child Health; Padua University Hospital; Padua Italy
| | - N. Celegato
- Food Allergy Referral Centre for Diagnosis and Treatment; Veneto Region; Department of Women and Child Health; Padua University Hospital; Padua Italy
| | - A. Muraro
- Food Allergy Referral Centre for Diagnosis and Treatment; Veneto Region; Department of Women and Child Health; Padua University Hospital; Padua Italy
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Abstract
Maternal stress in fetal and early life has been associated with the development of respiratory allergies, but no studies exist about food allergy. Stressful events and the quality of caregiving provided, as they affect the emotional and physiologic regulation of the infant, could alter the hypothalamic-pituitary-adrenal and immune system, facilitating an increased allergic response. This study aimed to investigate the influence of perinatal stress, as perceived by mothers, on developing food allergy in childhood. A survey on pregnancy and the first three months after giving birth was submitted to 59 Italian mothers of at least one child suffering from severe food allergy and one completely healthy child, for a total of 118 children examined. The presence of stressful events and the quality of perinatal period for each child were assessed retrospectively. The food allergic children's data were compared to siblings' data through inferential statistics. The results showed a significantly higher number of stressful events occurred during patients' perinatal period, compared to siblings, in particular bereavements in pregnancy and parenting difficulties in postpartum. Mothers reported harder pregnancies and more stressful, harder, and, in general, worse postpartum when referring to their food-allergic children, in comparison with their siblings (p < .05). Psychological aspects are demonstrated to be involved in the development of allergic diseases. This study constitutes the first step to examine the role of early stress and perinatal psychosocial factors in the pathogenesis of food allergy; further studies are necessary to understand individual psychological impact and its relations with genetic and biological factors.
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Affiliation(s)
- L Polloni
- a Department of Women and Child Health, Referral Centre for Food Allergy Diagnosis and Treatment , Padua University Hospital , Padua , Italy
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Polloni L, de Souza JB, Miranda SA, Alves Machado PH, Oliveira Júnior RJ, Morelli S. Chromosome instability and expression of BRAF, TERT and P53 in macrophage murine cell line (J774-1). BMC Proc 2014. [PMCID: PMC4204145 DOI: 10.1186/1753-6561-8-s4-p47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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