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de Pinho RB, Barbosa TN, Dall'Agno L, da Rocha Fonseca B, Bezerra FSB, Sousa FSS, Seixas FK, Collares T, Borsuk S. Mycobacterium bovis BCG expressing the proteins CP40 or CP09720 of Corynebacterium pseudotuberculosis promotes protection in mice after challenge. Vaccine 2024; 42:33-39. [PMID: 38044246 DOI: 10.1016/j.vaccine.2023.11.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 11/23/2023] [Indexed: 12/05/2023]
Abstract
In this study, we assessed the survival and immune response of mice vaccinated with recombinant Mycobacterium bovis BCG Pasteur that expressed the CP40 or CP09720 proteins after the mice were challenged with a C. pseudotuberculosis MIC-6 virulent strain. Six groups of mice (n = 10 mice per group) were immunised with a sterile 0.9% saline solution (G1), 106 CFU of M. bovis BCG Pasteur (G2), 106 CFU of M. bovis BCG/cp40 (G3), 106 CFU of M. bovis BCG/cp09720 (G4), M. bovis BCG/cp40 boosted with rCP40 (G5), and M. bovis BCG/cp09720 boosted with rCP09720 (G6). The highest survival rate of 90% was observed in the G5 group, followed by 80% in the G6 group and 70% in the G3 and G4 groups. Moreover, a significantly greater induction of IFN-γ and IL-10 was found in the G3 group and higher IL-17 levels were recorded in the G5 group compared to their levels in the control group (G1) (p < 0.05). A specific humoral immune response (total IgG) was found in the G5 and G6 groups on day 42 compared to the level of response in the G1 group. These results indicated that the vector vaccine elicited significantly greater survival of mice in all experimental groups after a strong virulent challenge and induced a strong immune response.
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Affiliation(s)
- Rodrigo Barros de Pinho
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Tallyson Nogueira Barbosa
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Laura Dall'Agno
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Bárbara da Rocha Fonseca
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Francisco Silvestre Brilhante Bezerra
- Laboratório de Biotecnologia Aplicada a Doenças Infecto-Parasitárias, Centro de Ciências Biológicas e da Saúde, Universidade Rural do Semiárido, Mossoró, Brazil
| | - Fernanda Severo Sabedra Sousa
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Fabiana Kommling Seixas
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Tiago Collares
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Sibele Borsuk
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil.
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Barboza VDS, Domingues WB, de Souza TT, Collares TV, Seixas FK, Pacheco BS, Sousa FSS, Oliveira TL, de Lima M, de Pereira CMP, Spilki FR, Giongo JL, Vaucher RDA. Reverse transcription-loop-mediated isothermal amplification (RT-LAMP) assay as a rapid molecular diagnostic tool for COVID-19 in healthcare workers. J Clin Virol Plus 2023; 3:100134. [PMID: 36742065 PMCID: PMC9891106 DOI: 10.1016/j.jcvp.2023.100134] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 10/19/2022] [Accepted: 01/06/2023] [Indexed: 01/28/2023] Open
Abstract
In December 2019, the Chinese Center for Disease Control (CDC of China) reported an outbreak of pneumonia in the city of Wuhan (Hubei province, China) that haunted the world, resulting in a global pandemic. This outbreak was caused by a betacoronavirus named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Several of these cases have been observed in healthcare professionals working in hospitals and providing care on the pandemic's frontline. In the present study, nasopharyngeal swab samples of healthcare workers were used to assess the performance of the reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay and subsequently compared with the real-time reverse-transcription quantitative PCR (RT-qPCR) method. Thus, in this study, we validated a method for detecting SARS-CoV-2 based on RT-LAMP that can be used to diagnose these workers. The methodology used was based on analyzing the sensitivity, specificity, evaluation of the detection limit, and cross-reaction with other respiratory viruses. The agreement was estimated using a dispersion diagram designed using the Bland-Altman method. A total of 100 clinical specimens of nasopharyngeal swabs were collected from symptomatic and asymptomatic healthcare workers in Pelotas, Brazil, during the SARS-CoV-2 outbreak. RT-LAMP assay, it was possible to detect SARS-CoV-2 in 96.7% of the healthcare professionals tested using the E gene and N gene primers approximately and 100% for the gene of human β-actin. The observed agreement was considered excellent for the primer set of the E and N genes (k = 0.957 and k = 0.896), respectively. The sensitivity of the RT-LAMP assay was positive for the primer set of the E gene, detected to approximately 2 copies per reaction. For the primer set of the N gene, the assay was possible to verify an LoD of approximately 253 copies per reaction. After executing the RT-LAMP assay, no positive reactions were observed for any of the virus respiratory tested. Therefore, we conclude that RT-LAMP is effective for rapid molecular diagnosis during the COVID-19 outbreak period in healthcare professionals.
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Affiliation(s)
- Victor dos Santos Barboza
- Laboratório de Pesquisa em Bioquímica e Biologia Molecular de Micro-organismos, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - William Borges Domingues
- Laboratório de Genômica Estrutural, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Thobias Toniolo de Souza
- Laboratório de Pesquisa em Bioquímica e Biologia Molecular de Micro-organismos, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Tiago Veiras Collares
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Fabiana Kommling Seixas
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Bruna Silveira Pacheco
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Fernanda Severo Sabedra Sousa
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Thaís Larré Oliveira
- Laboratório de Vacinologia, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Marcelo de Lima
- Laboratório de Virologia e Imunologia, Faculdade de Veterinária, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | | | - Fernando Rosado Spilki
- Laboratório de Microbiologia Molecular, Universidade FEEVALE, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Janice Luehring Giongo
- Laboratório de Pesquisa em Bioquímica e Biologia Molecular de Micro-organismos, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Rodrigo de Almeida Vaucher
- Laboratório de Pesquisa em Bioquímica e Biologia Molecular de Micro-organismos, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, Brazil,Corresponding author
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Barbosa TN, Silva MTDO, Sena-Lopes Â, Kremer FS, Sousa FSS, Seixas FK, Collares TV, de Pereira CMP, Borsuk S. Bioprospection of the trichomonacidal activity of lipid extracts derived from marine macroalgae Gigartina skottsbergii. PLoS One 2023; 18:e0285426. [PMID: 37155662 PMCID: PMC10166524 DOI: 10.1371/journal.pone.0285426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 04/21/2023] [Indexed: 05/10/2023] Open
Abstract
Algal extracts are sources of bioactive substances with applications in the development of novel alternative drugs against several diseases, including trichomoniasis sexually transmitted infection caused by Trichomonas vaginalis. Factors such as clinical failures and resistant strains limit the success of the existing drugs available for treating this disease. Therefore, searching for viable alternatives to these drugs is essential for the treatment of this disease. The present study was conducted for, in vitro and in silico characterization of extracts obtained from marine macroalgae Gigartina skottsbergii at stages gametophidic, cystocarpic, and tetrasporophidic. In addition, antiparasitic activity of these extracts against the ATCC 30236 isolate of T. vaginalis, their cytotoxicity, and gene expression of trophozoites after treatment were evaluated. The minimum inhibitory concentration and 50% inhibition concentration were determined for each extract. Results: In vitro analysis of the extracts' anti-T. vaginalis activity revealed an inhibitory effect of 100%, 89.61%, and 86.95% for Gigartina skottsbergii at stages gametophidic, cystocarpic, and tetrasporophidic, respectively, at 100 μg/mL. In silico analysis revealed the interactions between constituents of the extracts and enzymes from T. vaginalis, with significant free energy values obtained for the binding. None of the extract concentrations exhibited cytotoxic effects on VERO cell line compared to control, while cytotoxicity on HMVII vaginal epithelial cells line was observed at 100 μg/mL (30% inhibition). Gene expression analysis revealed differences in the expression profile of T. vaginalis enzymes between the extract-treated and control groups. According to these results, Gigartina skottsbergii extracts exhibited satisfactory antiparasitic activity.
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Affiliation(s)
- Tallyson Nogueira Barbosa
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, Rio Grande do Sul, Brasil
| | - Mara Thais de Oliveira Silva
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, Rio Grande do Sul, Brasil
| | - Ângela Sena-Lopes
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, Rio Grande do Sul, Brasil
| | - Frederico Schmitt Kremer
- Laboratório de Lipidômica e Bio-orgânica, Centro de Ciências Químicas, Farmacêuticas e de Alimentos, UFPel, Pelotas, Rio Grande do Sul, Brasil
| | - Fernanda Severo Sabedra Sousa
- Laboratório de Bioinformática e Proteômica, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, Rio Grande do Sul, Brasil
| | - Fabiana Kommling Seixas
- Laboratório de Bioinformática e Proteômica, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, Rio Grande do Sul, Brasil
| | - Tiago Veiras Collares
- Laboratório de Bioinformática e Proteômica, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, Rio Grande do Sul, Brasil
| | - Cláudio Martin Pereira de Pereira
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, Rio Grande do Sul, Brasil
| | - Sibele Borsuk
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, Rio Grande do Sul, Brasil
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Leal JG, Piccoli BC, Oliveira CS, D’Avila da Silva F, Omage FB, Rocha JBTD, Sonego MS, Segatto NV, Seixas FK, Collares TV, da Silva RS, Sarturi JM, Dornelles L, Faustino MAF, Rodrigues OED. Synthesis, antioxidant and antitumoral activity of new 5′-arylchalcogenyl-3′- N-( E)-feruloyl-3′, 5′-dideoxy-amino-thymidine (AFAT) derivatives. NEW J CHEM 2022. [DOI: 10.1039/d2nj03487e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A new multitarget arylchalcogenyl zidovudine derivative is disclosed. The compounds showed a prominent antioxidant and antitumoral activity with no overt sign of toxicity for in vivo evaluations.
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Affiliation(s)
- Julliano G. Leal
- Department of Chemistry, LabSelen-NanoBio, Federal University of Santa Maria, CEP 97105-900, Santa Maria, RS, Brazil
| | - Bruna Candia Piccoli
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Cláudia Sirlene Oliveira
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Fernanda D’Avila da Silva
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Folorunsho Bright Omage
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | | | - Mariana Souza Sonego
- Technological Development Center, Cancer Biotechnology Laboratory, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Natália Vieira Segatto
- Technological Development Center, Cancer Biotechnology Laboratory, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Fabiana Kommling Seixas
- Technological Development Center, Cancer Biotechnology Laboratory, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Tiago Veiras Collares
- Technological Development Center, Cancer Biotechnology Laboratory, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Rafael Santos da Silva
- Department of Chemistry, LabSelen-NanoBio, Federal University of Santa Maria, CEP 97105-900, Santa Maria, RS, Brazil
| | - Joelma Menegazzi Sarturi
- Department of Chemistry, LabSelen-NanoBio, Federal University of Santa Maria, CEP 97105-900, Santa Maria, RS, Brazil
| | - Luciano Dornelles
- Department of Chemistry, LabSelen-NanoBio, Federal University of Santa Maria, CEP 97105-900, Santa Maria, RS, Brazil
| | | | - Oscar E. D. Rodrigues
- Department of Chemistry, LabSelen-NanoBio, Federal University of Santa Maria, CEP 97105-900, Santa Maria, RS, Brazil
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Barral TD, Kalil MA, Mariutti RB, Arni RK, Gismene C, Sousa FS, Collares T, Seixas FK, Borsuk S, Estrela-Lima A, Azevedo V, Meyer R, Portela RW. Immunoprophylactic properties of the Corynebacterium pseudotuberculosis-derived MBP:PLD:CP40 fusion protein. Appl Microbiol Biotechnol 2022; 106:8035-8051. [PMID: 36374330 PMCID: PMC9660185 DOI: 10.1007/s00253-022-12279-1] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 10/21/2022] [Accepted: 11/04/2022] [Indexed: 11/16/2022]
Abstract
Caseous lymphadenitis (CLA) is a disease that affects small ruminants, and the best way to prevent its spread on a herd is through immunoprophylaxis. Thus, we aimed to evaluate the MBP:PLD:CP40 fusion protein as a new CLA immunogen. The fusion protein was constructed by combining Corynebacterium pseudotuberculosis PLD and CP40 proteins with maltose-binding protein (MBP) as an intrinsic adjuvant. The antigenicity, allergenic potential, prediction of B epitopes, binding to MHC receptors, and docking on the Toll-Like 2 receptor were evaluated in silico. MBP:PLD:CP40 was expressed and purified. 40 BALB/c were divided into four groups (G1 - control, G2 - Saponin, G3 - MBP:PLD:CP40, and G4 - rPLD + rCP40). Total IgG, IgG1, and IgG2a were quantified, and the expressions of cytokines after splenocyte in vitro stimulation were assessed. Mice were challenged 42 days after the first immunization. The in silico analysis showed that MBP:PLD:CP40 has immunogenic potential, does not have allergic properties, and can dock on the TRL2 receptor. MBP:PLD:CP40 stimulated the production of IgG1 antibodies in a fivefold proportion to IgG2a, and TNF and IL-17 were significantly expressed in response to the antigenic stimuli. When rPLD and rCP40 were used together for immunization, they could induce IFN-γ and IL-12, but with no detectable antibody production. The G3 and G4 groups presented a survival of 57.14% and 42.86%, respectively, while the G1 and G2 mice were all dead 15 days after the challenge. MBP:PLD:CP40 partially protected the mice against C. pseudotuberculosis infection and can be considered a potential new CLA immunogen. KEY POINTS: • The fusion protein induced more IgG1 than IgG2a antibodies; • The fusion protein also induced the expression of the TNF and IL-17 cytokines; • Mice inoculated with MBP:PLD:CP40 presented a 57.14% survival.
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Affiliation(s)
- Thiago Doria Barral
- grid.8399.b0000 0004 0372 8259Laboratory of Immunology and Molecular Biology, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon s/n, Salvador, Bahia State 40110-100 Brazil
| | - Mauricio Alcantara Kalil
- grid.8399.b0000 0004 0372 8259Laboratory of Immunology and Molecular Biology, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon s/n, Salvador, Bahia State 40110-100 Brazil
| | - Ricardo Barros Mariutti
- grid.410543.70000 0001 2188 478XMultiuser Center for Biomolecular Innovation, Universidade Estadual Paulista, São José do Rio Preto, São Paulo State 15054-000 Brazil
| | - Raghuvir Krishnaswamy Arni
- grid.410543.70000 0001 2188 478XMultiuser Center for Biomolecular Innovation, Universidade Estadual Paulista, São José do Rio Preto, São Paulo State 15054-000 Brazil
| | - Carolina Gismene
- grid.410543.70000 0001 2188 478XMultiuser Center for Biomolecular Innovation, Universidade Estadual Paulista, São José do Rio Preto, São Paulo State 15054-000 Brazil
| | - Fernanda Severo Sousa
- grid.411221.50000 0001 2134 6519Center for Technological Development, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul State 96010-900 Brazil
| | - Tiago Collares
- grid.411221.50000 0001 2134 6519Center for Technological Development, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul State 96010-900 Brazil
| | - Fabiana Kommling Seixas
- grid.411221.50000 0001 2134 6519Center for Technological Development, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul State 96010-900 Brazil
| | - Sibele Borsuk
- grid.411221.50000 0001 2134 6519Center for Technological Development, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul State 96010-900 Brazil
| | - Alessandra Estrela-Lima
- grid.8399.b0000 0004 0372 8259Laboratory of Veterinary Pathology, School of Veterinary Medicine and Zootechnics, Universidade Federal da Bahia, Salvador, Bahia State 40110-100 Brazil
| | - Vasco Azevedo
- grid.8430.f0000 0001 2181 4888Laboratory of Molecular and Cellular Genetics, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais State 31270-901 Brazil
| | - Roberto Meyer
- grid.8399.b0000 0004 0372 8259Laboratory of Immunology and Molecular Biology, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon s/n, Salvador, Bahia State 40110-100 Brazil
| | - Ricardo Wagner Portela
- grid.8399.b0000 0004 0372 8259Laboratory of Immunology and Molecular Biology, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon s/n, Salvador, Bahia State 40110-100 Brazil
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Borges MA, Sousa FSS, Paschoal JD, Lopes IAR, da S Feijó AL, Seixas Neto ACP, da Silva Pinto L, Seixas FK, Collares T. Effect of supplementation of medium with Bauhinia forficata recombinant lectins on expression of oxidative stress genes during in vitro maturation of bovine oocytes. Reprod Toxicol 2021; 103:64-70. [PMID: 34098044 DOI: 10.1016/j.reprotox.2021.05.012] [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: 03/15/2021] [Revised: 05/28/2021] [Accepted: 05/30/2021] [Indexed: 10/21/2022]
Abstract
The lectin of Bauhinia forficata (nBfL) is a protein able to bind reversibly to N-acetylgalactosamine, performing several functions and one of them is the antiproliferative activity in tumor cells, but its effects have not yet been evaluated in female gametes. The objective of the present study was to determine the additional effect of B. forficata recombinants lectins in the medium of maturation in vitro of bovine oocytes in expression of genes related to oxidative stress pathways. To get the proteins, the gene for this recombinant lectin (rBfL) and its truncated isoform (rtBfL) were cloned and expressed in Escherichia coli (E.coli). The oocytes obtained through follicular puncture were incubated in IVM medium for 24 h containing concentrations of 10 μg/mL, 50 μg/mL and 100 μg/mL of nBfL, rBfL and rtBfL, and a no treated group as a control. In the groups treated with the concentration of 100 μg / mL, the gene expression of genes involved in oxidative stress SOD2, CAT, GPX-1, GSR, NOS2 and apoptosis BAX, CASP3 were evaluated. The rtBfL increased the expression of the SOD2, GSR and NOS2 genes and all the tested lectins increased the expression of the CASP3 gene compared to the control group. These findings indicate that the tested concentrations of the B. forficata recombinants lectins probably influence the expression of oxidative stress genes and increase the expression of the apoptotic gene CASP3 during in vitro maturation of bovine oocytes.
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Affiliation(s)
- Morgana Alves Borges
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-610, RS, Brazil
| | - Fernanda S S Sousa
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-610, RS, Brazil
| | - Júlia Damé Paschoal
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-610, RS, Brazil
| | - Isadora A R Lopes
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-610, RS, Brazil
| | - Ana Laura da S Feijó
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-610, RS, Brazil
| | - Amilton Clair Pinto Seixas Neto
- Programa de Pós-Graduação em Biotecnologia (PPGB), Laboratório de Bioinformática e Proteômica Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Luciano da Silva Pinto
- Programa de Pós-Graduação em Biotecnologia (PPGB), Laboratório de Bioinformática e Proteômica Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas (UFPel), Pelotas, RS, Brazil
| | - Fabiana Kommling Seixas
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-610, RS, Brazil
| | - Tiago Collares
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-610, RS, Brazil.
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7
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Segatto NV, Bender CB, Seixas FK, Schachtschneider K, Schook L, Robertson N, Qazi A, Carlino M, Jordan L, Bolt C, Collares T. Perspective: Humanized Pig Models of Bladder Cancer. Front Mol Biosci 2021; 8:681044. [PMID: 34079821 PMCID: PMC8165235 DOI: 10.3389/fmolb.2021.681044] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 04/28/2021] [Indexed: 12/09/2022] Open
Abstract
Bladder cancer (BC) is the 10th most common neoplasia worldwide and holds expensive treatment costs due to its high recurrence rates, resistance to therapy and the need for lifelong surveillance. Thus, it is necessary to improve the current therapy options and identify more effective treatments for BC. Biological models capable of recapitulating the characteristics of human BC pathology are essential in evaluating the effectiveness of new therapies. Currently, the most commonly used BC models are experimentally induced murine models and spontaneous canine models, which are either insufficient due to their small size and inability to translate results to clinical basis (murine models) or rarely spontaneously observed BC (canine models). Pigs represent a potentially useful animal for the development of personalized tumors due to their size, anatomy, physiology, metabolism, immunity, and genetics similar to humans and the ability to experimentally induce tumors. Pigs have emerged as suitable biomedical models for several human diseases. In this sense, the present perspective focuses on the genetic basis for BC; presents current BC animal models available along with their limitations; and proposes the pig as an adequate animal to develop humanized large animal models of BC. Genetic alterations commonly found in human BC can be explored to create genetically defined porcine models, including the BC driver mutations observed in the FGFR3, PIK3CA, PTEN, RB1, HRAS, and TP53 genes. The development of such robust models for BC has great value in the study of pathology and the screening of new therapeutic and diagnostic approaches to the disease.
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Affiliation(s)
- Natália Vieira Segatto
- Postgraduate Program in Biotechnology, Cancer Biotechnology Laboratory, Technology Development Center, Federal University of Pelotas, Pelotas, Brazil
| | - Camila Bonemann Bender
- Postgraduate Program in Biotechnology, Cancer Biotechnology Laboratory, Technology Development Center, Federal University of Pelotas, Pelotas, Brazil
| | - Fabiana Kommling Seixas
- Postgraduate Program in Biotechnology, Cancer Biotechnology Laboratory, Technology Development Center, Federal University of Pelotas, Pelotas, Brazil
| | - Kyle Schachtschneider
- Department of Radiology, University of Illinois at Chicago, Chicago, IL, United States.,Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, Chicago, IL, United States.,National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign, Champaign, IL, United States
| | - Lawrence Schook
- Department of Radiology, University of Illinois at Chicago, Chicago, IL, United States.,Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | | | - Aisha Qazi
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Maximillian Carlino
- Department of Radiology, University of Illinois at Chicago, Chicago, IL, United States
| | - Luke Jordan
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Courtni Bolt
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Tiago Collares
- Postgraduate Program in Biotechnology, Cancer Biotechnology Laboratory, Technology Development Center, Federal University of Pelotas, Pelotas, Brazil
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8
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Brilhante Bezerra FS, Silva Rezende ADF, Oliveira Silva MTD, Sena-Lopes Â, Roesch-Ely M, Pêgas Henriques JA, Padilha FF, Carvalho Azevedo VA, Dias Portela RW, Seixas FK, Collares TV, Savegnago L, Borsuk S. The combination of Brazilian red propolis and recombinant protein rCP01850 in the immunoprophylaxis of Corynebacterium pseudotuberculosis infection in mice. Microb Pathog 2020; 149:104354. [DOI: 10.1016/j.micpath.2020.104354] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/10/2020] [Accepted: 06/17/2020] [Indexed: 12/30/2022]
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9
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Couto GK, Seixas FK, Iglesias BA, Collares T. Perspectives of photodynamic therapy in biotechnology. J Photochem Photobiol B 2020; 213:112051. [PMID: 33074140 DOI: 10.1016/j.jphotobiol.2020.112051] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 09/30/2020] [Accepted: 10/07/2020] [Indexed: 12/20/2022]
Abstract
Photodynamic therapy (PDT) is a current and innovative technique that can be applied in different areas, such as medical, biotechnological, veterinary, among others, both for the treatment of different pathologies, as well as for diagnosis. It is based on the action of light to activate photosensitizers that will perform their activity on target tissues, presenting high sensitivity and less adverse effects. Therefore, knowing that biotechnology aims to use processes to develop products aimed at improving the quality of life of human and the environment, and optimizing therapeutic actions, researchers have been used PDT as a tool of choice. This review aims to identify the impacts and perspectives and challenges of PDT in different areas of biotechnology, such as health and agriculture and oncology. Our search demonstrated that PDT has an important impact around oncology, minimizing the adverse effects and resistance to chemotherapeutic to the current treatments available for cancer. Veterinary medicine is another area with continuous interest in this therapy, since studies have shown promising results for the treatment of different animal pathologies such as Bovine mastitis, Malassezia, cutaneous hemangiosarcoma, among others. In agriculture, PDT has been used, for example, to remove traces of antibiotics of milk. The challenges, in general, of PDT in the field of biotechnology are mainly the development of effective and non-toxic or less toxic photosensitizers for humans, animals and plants. We believe that there is a current and future potential for PDT in different fields of biotechnology due to the existing demand.
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Affiliation(s)
- Gabriela Klein Couto
- Molecular and Cellular Oncology Research Group, Cancer Biotechnology Laboratory, Technological Development Center, Federal University of Pelotas, Pelotas, Brazil
| | - Fabiana Kommling Seixas
- Molecular and Cellular Oncology Research Group, Cancer Biotechnology Laboratory, Technological Development Center, Federal University of Pelotas, Pelotas, Brazil
| | - Bernardo Almeida Iglesias
- Laboratory of Bioinorganic and Porphyrinoid Materials, Chemistry Department, Federal University of Santa Maria, Santa Maria, Brazil.
| | - Tiago Collares
- Molecular and Cellular Oncology Research Group, Cancer Biotechnology Laboratory, Technological Development Center, Federal University of Pelotas, Pelotas, Brazil.
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10
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Sena-Lopes Â, Remião MH, Alves MSD, Fonseca BDR, Seixas FK, Collares T, Borsuk S. Cell viability analysis of Toxocara cati larvae with LIVE / DEAD® Viability/Cytotoxicity kit. Exp Parasitol 2020; 212:107871. [DOI: 10.1016/j.exppara.2020.107871] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 12/14/2019] [Accepted: 03/02/2020] [Indexed: 10/24/2022]
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11
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Casaril AM, Domingues M, de Andrade Lourenço D, Birmann PT, Padilha N, Vieira B, Begnini K, Seixas FK, Collares T, Lenardão EJ, Savegnago L. Depression- and anxiogenic-like behaviors induced by lipopolysaccharide in mice are reversed by a selenium-containing indolyl compound: Behavioral, neurochemical and computational insights involving the serotonergic system. J Psychiatr Res 2019; 115:1-12. [PMID: 31082651 DOI: 10.1016/j.jpsychires.2019.05.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 04/09/2019] [Accepted: 05/02/2019] [Indexed: 12/30/2022]
Abstract
Major depression and anxiety are highly incapacitating psychiatric disorders often present simultaneously, and the causal relationship between these disorders and inflammation are under extensive investigation. The treatment for this comorbidity still relies on drugs acting on the serotonergic neurotransmission, but the modulation of immune-inflammatory pathways has attained an increasing interest in the drug discovery. We have previously demonstrated that the selenoorganic compound 3-[(4-chlorophenyl)selanyl]-1-methyl-1H-indole (CMI) possess antioxidant, anti-inflammatory, antinociceptive and antidepressant-like effect in mice. Considering these pharmacological properties and the structural similarities between tryptophan, serotonin and CMI, the aim of the present study was to investigate whether CMI ameliorates depression- and anxiogenic-like behavior induced by lipopolysaccharide (LPS) in Swiss male mice by modulating the serotonergic system and reducing neuroinflammation. The administration of CMI (1 mg/kg, i.g) reversed the behavioral deficits induced by LPS (0.83 mg/kg, i.p) in the tail suspension test, splash test and elevated plus maze. The pre-treatment of mice with WAY100635 (5-HT1A receptor antagonist), ketanserin (5-HT2A/2C receptor antagonist) and ondansetron (5-HT3 receptor antagonist) prevented the antidepressant- and anxiolytic-like effect elicited by CMI treatment after the LPS challenge. The administration of CMI also counteracted the increased expression of pro-inflammatory cytokines and indoleamine 2,3-dioxygenase (IDO) in the prefrontal cortex and hippocampus of mice challenged with LPS. Additionally, a molecular docking analysis showed that CMI binds to the active site of the serotonin transporter and IDO. These findings suggest that CMI reversed behavioral and biochemical alterations in the depression-anxiety comorbidity induced by LPS, possibly by modulation of neuroinflammatory mediators and the serotonergic system.
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Affiliation(s)
- Angela Maria Casaril
- Technological Development Center, Division of Biotechnology, Neurobiotechology Research Group, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Micaela Domingues
- Technological Development Center, Division of Biotechnology, Neurobiotechology Research Group, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Darling de Andrade Lourenço
- Technological Development Center, Division of Biotechnology, Neurobiotechology Research Group, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Paloma Taborda Birmann
- Technological Development Center, Division of Biotechnology, Neurobiotechology Research Group, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Nathalia Padilha
- Center for Chemical, PharmaceuticaSl and Food Sciences, Laboratory of Clean Organic Synthesis, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Beatriz Vieira
- Center for Chemical, PharmaceuticaSl and Food Sciences, Laboratory of Clean Organic Synthesis, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Karine Begnini
- Technological Development Center, Division of Biotechnology, Molecular and Cellular Oncology Research Group and Functional Genomics Laboratory, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Fabiana Kommling Seixas
- Technological Development Center, Division of Biotechnology, Molecular and Cellular Oncology Research Group and Functional Genomics Laboratory, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Tiago Collares
- Technological Development Center, Division of Biotechnology, Molecular and Cellular Oncology Research Group and Functional Genomics Laboratory, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Eder João Lenardão
- Center for Chemical, PharmaceuticaSl and Food Sciences, Laboratory of Clean Organic Synthesis, Federal University of Pelotas, Pelotas, RS, Brazil
| | - Lucielli Savegnago
- Technological Development Center, Division of Biotechnology, Neurobiotechology Research Group, Federal University of Pelotas, Pelotas, RS, Brazil.
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12
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Rizzi C, Peiter AC, Oliveira TL, Seixas ACP, Leal KS, Hartwig DD, Seixas FK, Borsuk S, Dellagostin OA. Stable expression of Mycobacterium bovis antigen 85B in auxotrophic M. bovis bacillus Calmette-Guérin. Mem Inst Oswaldo Cruz 2017; 112:123-130. [PMID: 28177046 PMCID: PMC5293121 DOI: 10.1590/0074-02760160360] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 08/10/2016] [Accepted: 10/31/2016] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Bovine tuberculosis (TB) is a zoonotic disease caused by Mycobacterium
bovis, responsible for causing major losses in livestock. A cost
effective alternative to control the disease could be herd vaccination. The
bacillus Calmette-Guérin (BCG) vaccine has a limited efficacy against bovine TB,
but can improved by over-expression of protective antigens. The M.
bovis antigen 85B demonstrates ability to induce protective immune
response against bovine TB in animal models. However, current systems for the
construction of recombinant BCG expressing multiple copies of the gene result in
strains of low genetic stability that rapidly lose the plasmid in vivo. Employing
antibiotic resistance as selective markers, these systems also compromise vaccine
safety. We previously reported the construction of a stable BCG expression system
using auxotrophic complementation as a selectable marker. OBJECTIVES The fundamental aim of this study was to construct strains of M.
bovis BCG Pasteur and the auxotrophic M. bovis BCG
ΔleuD expressing Ag85B and determine their stability in
vivo. METHODS Employing the auxotrophic system, we constructed rBCG strains that expressed
M. bovis Ag85B and compared their stability with a
conventional BCG strain in mice. Stability was measured in terms of bacterial
growth on the selective medium and retention of antigen expression. FINDINGS The auxotrophic complementation system was highly stable after 18 weeks, even
during in vivo growth, as the selective pressure and expression of antigen were
maintained comparing to the conventional vector. MAIN CONCLUSION The Ag85B continuous expression within the host may generate a stronger and
long-lasting immune response compared to conventional systems.
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Affiliation(s)
- Caroline Rizzi
- Universidade Federal de Pelotas, Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Programa de Pós-Graduação em Biotecnologia, Pelotas, RS, Brasil
| | - Ana Carolina Peiter
- Universidade Federal de Pelotas, Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Programa de Pós-Graduação em Biotecnologia, Pelotas, RS, Brasil
| | - Thaís Larré Oliveira
- Universidade Federal de Pelotas, Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Programa de Pós-Graduação em Biotecnologia, Pelotas, RS, Brasil
| | - Amilton Clair Pinto Seixas
- Universidade Federal de Pelotas, Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Programa de Pós-Graduação em Biotecnologia, Pelotas, RS, Brasil
| | - Karen Silva Leal
- Universidade Federal de Pelotas, Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Programa de Pós-Graduação em Biotecnologia, Pelotas, RS, Brasil
| | - Daiane Drawanz Hartwig
- Universidade Federal de Pelotas, Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Programa de Pós-Graduação em Biotecnologia, Pelotas, RS, Brasil.,Universidade Federal de Pelotas, Instituto de Biologia, Departamento de Microbiologia e Parasitologia, RS, Brasil
| | - Fabiana Kommling Seixas
- Universidade Federal de Pelotas, Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Programa de Pós-Graduação em Biotecnologia, Pelotas, RS, Brasil
| | - Sibele Borsuk
- Universidade Federal de Pelotas, Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Programa de Pós-Graduação em Biotecnologia, Pelotas, RS, Brasil
| | - Odir Antônio Dellagostin
- Universidade Federal de Pelotas, Centro de Desenvolvimento Tecnológico, Núcleo de Biotecnologia, Programa de Pós-Graduação em Biotecnologia, Pelotas, RS, Brasil
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13
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Brum AA, Rezende ADFS, Brilhante FS, Collares T, Begnine K, Seixas FK, Collares TV, Dellagostin OA, Azevedo V, Santos A, Portela RW, Borsuk S. Recombinant esterase from Corynebacterium pseudotuberculosis in DNA and subunit recombinant vaccines partially protects mice against challenge. J Med Microbiol 2017; 66:635-642. [PMID: 28516859 DOI: 10.1099/jmm.0.000477] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
PURPOSE We tested the efficacy of the esterase encoded by cp1002_RS09720 from Corynebacteriumpseudotuberculosis in recombinant subunit and DNA caseous lymphadenitis (CLA) vaccines. This target was predicted as one of the best CLA vaccine candidates by mature epitope density analysis. METHODOLOGY Gene cp1002_RS09720 was cloned into two different vectors (pAE for subunit vaccine and pTARGET for DNA vaccine). Four groups of 15 mice each were immunized with the recombinant esterase rCP09720 associated with aluminium hydroxide adjuvant (G1), pTARGET/cp09720 DNA vaccine (G2), a naked pTARGET (G3) or PBS as a negative control (G4). Immunization occurred in two doses intercalated by a 21 day interval. Twenty-one days after the last dose administration, animals were challenged with a virulent C. pseudotuberculosis MIC-6 strain. RESULTS G1 showed high levels of IgG1 and IgG2a on days 21 and 42 post-immunization and a significant level of IFN-γ (P<0.05), suggesting a Th1 response. The protection levels obtained were 58.3 and 16.6 % for G1 and G2, respectively. CONCLUSION The subunit vaccine composed of the recombinant esterase rCP09720 and Al(OH)3 is a promising antigenic formulation for use against CLA.
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Affiliation(s)
- Alexandre Antunes Brum
- Laboratório de Biotecnologia Infecto-parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Andrea de Fatima Silva Rezende
- Laboratório de Biotecnologia Infecto-parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Francisco Silvestre Brilhante
- Laboratório de Biotecnologia Infecto-parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Thais Collares
- Laboratório de Biotecnologia Infecto-parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Karine Begnine
- Grupo de Pesquisa em Oncologia Celular e Molecular, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Fabiana Kommling Seixas
- Grupo de Pesquisa em Oncologia Celular e Molecular, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Tiago Veiras Collares
- Grupo de Pesquisa em Oncologia Celular e Molecular, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Odir Antônio Dellagostin
- Laboratório de Biologia Molecular, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Vasco Azevedo
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, UFMG, Belo Horizonte, MG 31270-901, Brazil
| | - Anderson Santos
- Faculdade de Computação, UFU, Uberlândia, MG 38400-902, Brazil
| | - Ricardo Wagner Portela
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, UFBA, Salvador, BA 40110-100, Brazil
| | - Sibele Borsuk
- Laboratório de Biotecnologia Infecto-parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
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14
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Sena-Lopes Â, das Neves RN, Bezerra FSB, de Oliveira Silva MT, Nobre PC, Perin G, Alves D, Savegnago L, Begnini KR, Seixas FK, Collares T, Borsuk S. Antiparasitic activity of 1,3-dioxolanes containing tellurium in Trichomonas vaginalis. Biomed Pharmacother 2017; 89:284-287. [PMID: 28236702 DOI: 10.1016/j.biopha.2017.01.173] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 01/11/2017] [Accepted: 01/16/2017] [Indexed: 12/20/2022] Open
Abstract
The increased prevalence of metronidazole-resistant infections has resulted in a search for alternative drugs for the treatment of trichomoniasis. In the present study, we report the preparation and in vitro activity of three 1,3-dioxolanes that contain tellurium (PTeDOX 01, PTeDOX 02, and PTeDOX 03) against Trichomonas vaginalis. Six concentrations of these compounds were analyzed for in vitro activity against ATCC 30236 isolate of T. vaginalis. PTeDOX 01 reported a cytotoxic effect against 100% of T. vaginalis trophozoites at a final concentration of 90μM with an IC50 of 60μM. The kinetic growth curve of trophozoites indicated that PTeDOX 01 reduced the growth by 22% at a concentration of 90μM after an exposure of 12h, and induced complete parasite death at 24h. It induced cytotoxicity of 44% at 90μM concentration but and had no effect in lower concentrations in a culture of CHO-K1 cells. These results confirmed that PTeDOX 01 is an important drug for the treatment of T. vaginalis, and should be evaluated in other infectious agents as well.
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Affiliation(s)
- Ângela Sena-Lopes
- Laboratório de Biotecnologia Infecto-parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil.
| | - Raquel Nascimento das Neves
- Laboratório de Biotecnologia Infecto-parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | | | - Mara Thais de Oliveira Silva
- Laboratório de Biotecnologia Infecto-parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Patrick C Nobre
- LASOL-CCQFA, Universidade Federal de Pelotas-UFPel, P.O. Box 354, Pelotas, RS 96010-900, Brazil
| | - Gelson Perin
- LASOL-CCQFA, Universidade Federal de Pelotas-UFPel, P.O. Box 354, Pelotas, RS 96010-900, Brazil
| | - Diego Alves
- LASOL-CCQFA, Universidade Federal de Pelotas-UFPel, P.O. Box 354, Pelotas, RS 96010-900, Brazil
| | - Lucielli Savegnago
- Laboratório de Neurobiotecnologia, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Karine Rech Begnini
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Fabiana Kommling Seixas
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Tiago Collares
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Sibele Borsuk
- Laboratório de Biotecnologia Infecto-parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
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15
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Borsuk S, Seixas FK, Ramos DF, Mendum T, McFadden J, Dellagostin O. Rational design of diagnostic and vaccination strategies for tuberculosis. Braz J Infect Dis 2012. [DOI: 10.1590/s1413-86702012000100012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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16
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Borsuk S, Seixas FK, Ramos DF, Mendum T, McFadden J, Dellagostin O. Rational design of diagnostic and vaccination strategies for tuberculosis. Braz J Infect Dis 2012; 16:68-73. [PMID: 22358359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Accepted: 07/16/2011] [Indexed: 05/31/2023] Open
Abstract
The development of diagnostic tests which can readily differentiate between vaccinated and tuberculosis-infected individuals is crucial for the wider utilization of bacillus Calmette-Guérin (BCG) as vaccine in humans and animals. BCG_0092 is an antigen that elicits specific delayed type hypersensitivity reactions similar in size and morphological aspects to that elicited by purified protein derivative, in both animals and humans infected with the tubercle bacilli. We carried out bioinformatics analyses of the BCG_0092 and designed a diagnostic test by using the predicted MHC class I epitopes. In addition, we performed a knockout of this gene by homologous recombination in the BCG vaccine strain to allow differentiation of vaccinated from infected individuals. For that, the flanking sequences of the target gene (BCG_0092)were cloned into a suicide vector. Spontaneous double crossovers, which result in wild type revertants or knockouts were selected using SacB. BCG_0092 is present only in members of the Mycobacterium tuberculosis complex. Eight predicted MHC class I epitopes with potential for immunological diagnosis were defined, allowing the design of a specific diagnostic test. The strategy used to delete the (BCG_0092) gene from BCG was successful. The knockout genotype was confirmed by PCR and by Southern blot. The mutant BCG strain has the potential of inducing protection against tuberculosis without interfering with the diagnostic test based on the use of selected epitopes from BCG_0092.
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Affiliation(s)
- Sibele Borsuk
- Biotechnology Center, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
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Borsuk S, Seixas FK, Ramos DF, Mendum T, McFadden J, Dellagostin O. Rational design of diagnostic and vaccination strategies for tuberculosis. Braz J Infect Dis 2012. [DOI: 10.1016/s1413-8670(12)70277-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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18
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Nedel F, Soki FN, Conde MCM, Zeitlin BD, Tarquinio SBC, Nör JE, Seixas FK, Demarco FF. Comparative analysis of two colorimetric assays in dental pulp cell density. Int Endod J 2010; 44:59-64. [PMID: 20880134 DOI: 10.1111/j.1365-2591.2010.01796.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
AIM To compare and contrast two colorimetric assays used for the measurement of proliferation using two dental pulp cell types: dental pulp stem cells (DPSC) and human dental pulp fibroblasts (HDPF). METHODOLOGY Dental pulp stem cells or HDPF were seeded at 0.25×10(4) cells per well in 96-well plates. Cell proliferation was evaluated after 24-72h. At the end of the experimental period, the sulforhodamine B (SRB) assay or a water-soluble tetrazolium salt (WST-1) assay was performed. Optical densities were determined in a microplate reader (Genius; TECAN). Data were analysed by Student's t-test (comparison between cell types) and one-way anova followed by Tukey test (time-point intervals). Pearson' correlation tests were performed to compare the two assays for each cell line. RESULTS Both assays showed that DPSC had higher proliferation rates than HDPF. A positive significant correlation between the two colorimetric assays tested for both cell types DPSC (Pearson's correlation coefficient=0.847; P<0.05) and HDPF (Pearson's correlation coefficient=0.775; P<0.05). CONCLUSION Both tests demonstrated similar trends of cell proliferation, and thus are both appropriate for the evaluation of DPSC and HDPF. The choice of assay is therefore one of the practical applications. SRB stained plates can be dried and stored so may have utility in laboratories where data may require review or when access to analytical equipment is limited. WST-1 assays have the benefit of both ease and speed and may have utility in laboratories requiring either high throughput or rapid analyses.
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Affiliation(s)
- F Nedel
- School of Dentistry Center of Biotechnology, Federal University of Pelotas, Pelotas, RS, Brazil
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Coutinho ML, Vasconcellos FA, Fernandes CPH, Seyffert N, Seixas FK, Ko AI, Dellagostin OA, Aleixo JAG. Evaluation of the anti-LipL32 monoclonal antibodies potential for use in leptospirosis immunodiagnostic tests. J Immunoassay Immunochem 2007; 28:279-88. [PMID: 17613673 DOI: 10.1080/15321810701454870] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
LipL32 is the major lipoprotein in the membrane of pathogenic leptospira. In this work, we report on the production of monoclonal antibodies (MAbs) against recombinant LipL32 (rLipL32) and on the evaluation of their potential for use as reagents in diagnostic tests for leptospirosis. The MAbs were all of the IgG(2b) isotype and reacted specifically with native LipL32 in pathogenic serovars only. MAbs reacted in the same region of the rLipL32 molecule and their affinity constant was between 5x10(7) M(-1) and 6x10(6) M(-1). These results suggest that although the MAbs cannot be used together, they are well suited for diagnostic tests of leptospirosis based on LipL32 detection.
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Affiliation(s)
- M L Coutinho
- Center for Biotechnology, Federal University of Pelotas, Rio Grande do Sul, Brazil
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Jouglard SDD, Simionatto S, Seixas FK, Nassi FL, Dellagostin OA. Nested polymerase chain reaction for detection of pathogenic leptospires. Can J Microbiol 2006; 52:747-52. [PMID: 16917533 DOI: 10.1139/w06-027] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Leptospirosis is a widespread zoonosis caused by pathogenic members of the genus Leptospira that has a great impact on human and veterinary public health. Early diagnosis of leptospirosis is important because severe lepto spiral infection can have a fulminant course. The available serological techniques for the diagnosis of leptospirosis have low sensitivity during the early stage of the disease. Efforts are being made to develop simpler, effective, efficient, and inexpensive diagnostic methods. In this work, we first evaluate a polymerase chain reaction (PCR) based method for diagnosis of leptospirosis. Primers were designed to amplify a 264 bp region within the lipL32 gene that is conserved among pathogenic Leptospira and absent in nonpathogenic species. The sensitivity and specificity of the assay were evaluated using 7 saprophytic serovars, 37 pathogenic serovars, and 15 other microorganisms. The method was very specific for pathogenic serovars, however, it lacked sensitivity. To enhance the sensitivity, another primer pair was designed to amplify a 183 bp region within the 264 bp region of the lipL32 gene and was used in a nested PCR assay. This approach was much more sensitive than conventional PCR.Key words: leptospirosis, diagnosis, nested PCR, lipL32.
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