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Vivas-Ruiz DE, Sandoval GA, Gonzalez-Kozlova E, Zarria-Romero J, Lazo F, Rodríguez E, Magalhães HPB, Chávez-Olortegui C, Oliveira LS, Alvarenga VG, Urra FA, Toledo J, Yarlequé A, Eble JA, Sanchez EF. Fibrinogen-clotting enzyme, pictobin, from Bothrops pictus snake venom. Structural and functional characterization. Int J Biol Macromol 2020; 153:779-795. [PMID: 32169454 DOI: 10.1016/j.ijbiomac.2020.03.055] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 03/09/2020] [Accepted: 03/09/2020] [Indexed: 12/14/2022]
Abstract
A thrombin-like enzyme, pictobin, was purified from Bothrops pictus snake venom. It is a 41-kDa monomeric glycoprotein as showed by mass spectrometry and contains approx. 45% carbohydrate by mass which could be removed with N-glycosidase. Pictobin coagulates plasma and fibrinogen, releasing fibrinopeptide A and induces the formation of a friable/porous fibrin network as visualized by SEM. The enzyme promoted platelet aggregation in human PRP and defibrination in mouse model and showed catalytic activity on chromogenic substrates S-2266, S-2366, S-2160 and S-2238. Pictobin interacts with the plasma inhibitor α2-macroglobulin, which blocks its interaction with fibrinogen but not with the small substrate BApNA. Heparin does not affect its enzymatic activity. Pictobin cross reacted with polyvalent bothropic antivenom, and its deglycosylated form reduced its catalytic action and antivenom reaction. In breast and lung cancer cells, pictobin inhibits the fibronectin-stimulated migration. Moreover, it produces strong NADH oxidation, mitochondrial depolarization, ATP decrease and fragmentation of mitochondrial network. These results suggest by first time that a snake venom serinprotease produces mitochondrial dysfunction by affecting mitochondrial dynamics and bioenergetics. Structural model of pictobin reveals a conserved chymotrypsin fold β/β hydrolase. These data indicate that pictobin has therapeutic potential in the treatment of cardiovascular disorders and metastatic disease.
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Affiliation(s)
- Dan E Vivas-Ruiz
- Laboratorio de Biología Molecular, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Perú, Av. Venezuela Cdra 34 S/N, Ciudad Universitaria, Lima 01, Lima, Peru.
| | - Gustavo A Sandoval
- Laboratorio de Biología Molecular, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Perú, Av. Venezuela Cdra 34 S/N, Ciudad Universitaria, Lima 01, Lima, Peru
| | - Edgar Gonzalez-Kozlova
- Department of Genetics and Genomic Sciences, Icahn School for Data Science and Genomic Technology, New York, NYC, USA
| | - Jacquelyne Zarria-Romero
- Laboratorio de Reproducción y Biología del Desarrollo, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Perú, Av. Venezuela ra 34 S/N, Ciudad Universitaria, Lima 01, Lima, Peru
| | - Fanny Lazo
- Laboratorio de Biología Molecular, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Perú, Av. Venezuela Cdra 34 S/N, Ciudad Universitaria, Lima 01, Lima, Peru
| | - Edith Rodríguez
- Laboratorio de Biología Molecular, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Perú, Av. Venezuela Cdra 34 S/N, Ciudad Universitaria, Lima 01, Lima, Peru
| | - Henrique P B Magalhães
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Carlos Chávez-Olortegui
- Departamento de Bioquímica-Inmunología, Instituto de Ciências Biologicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Luciana S Oliveira
- Research and Development Center, Ezequiel Dias Foundation, 30510-010 Belo Horizonte, MG, Brazil
| | - Valeria G Alvarenga
- Research and Development Center, Ezequiel Dias Foundation, 30510-010 Belo Horizonte, MG, Brazil
| | - Félix A Urra
- Programa de Farmacología Clínica y Molecular, Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Independencia 1027, Casilla 7, Santiago 7800003, Chile
| | - Jorge Toledo
- Instituto de Neurociencia Biomédica, Facultad de Medicina, Universidad de Chile, Independencia 1027, Santiago 8380453, Chile; Facultad de Ciencias de la Salud, Universidad San Sebastián, Lota 2465, Providencia, Santiago 7510157, Chile
| | - Armando Yarlequé
- Laboratorio de Biología Molecular, Facultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, Lima, Perú, Av. Venezuela Cdra 34 S/N, Ciudad Universitaria, Lima 01, Lima, Peru
| | - Johannes A Eble
- Institute for Physiological Chemistry and Pathobiochemistry, University of Münster, 48149 Münster, Germany
| | - Eladio F Sanchez
- Research and Development Center, Ezequiel Dias Foundation, 30510-010 Belo Horizonte, MG, Brazil
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Zarria-Romero J, Osorio A, Pino J, Shiga B, Vivas-Ruiz D. [Effect of the Industrial Nanoparticles TiO 2 , SiO 2 and ZnO on Cell Viability and Gene Expression in Red Bone Marrow of Mus Musculus]. ACTA ACUST UNITED AC 2018; 34:436-444. [PMID: 29267767 DOI: 10.17843/rpmesp.2017.343.2425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 06/07/2017] [Indexed: 11/06/2022]
Abstract
OBJECTIVES To evaluate the effect of ZnO, TiO2 and SiO2 nanoparticles on cell viability and expression of the interleukin 7, interleukin 3, and granulocyte-macrophage colony stimulating factor (GM-CSF) genes in Mus musculus. MATERIAL AND METHODS Red bone marrow was extracted from five Balb/c mice for the analysis of cell viability using the MTT test. The mice were divided into two groups of five each: one group was inoculated intraperitoneally with 0.5, 1.0, 2.5, 5.0, and 10 mg/kg of ZnO and SiO2 nanoparticles, respectively, and the other group was inoculated with 5.0, 10.0, 15.0, 20.0, and 25 mg/kg of TiO2 nanoparticles, respectively. Thirty hours later, RNA was extracted from the red bone marrow of the mice in both groups for gene expression analysis using quantitative PCR and RT-PCR. RESULTS ZnO and SiO2 nanoparticles reduced cell viability in a dose-dependent manner by 37% and 26%, respectively, starting at a dose of 1 mg/kg. TiO2 nanoparticles at 5 mg/kg and 10 mg/kg reduced the gene expression of interleukins 7 and 3 by 55.3% and 70.2%, respectively, and SiO2 nanoparticles caused the greatest decrease (91%) in the expression of GM-CSF. ZnO nanoparticles reduced the expression of GM-CSF starting at doses of 20 mg/kg and 25 mg/kg. CONCLUSIONS ZnO, SiO2 and TiO2 nanoparticles affect cell viability and gene expression in the mouse bone marrow.
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Affiliation(s)
- Jacquelyne Zarria-Romero
- Laboratorio de Reproducción y Biología del Desarrollo. Facultad de Ciencias Biológicas. Universidad Nacional Mayor de San Marcos. Lima, Perú
| | - Ana Osorio
- Laboratorio de Nanotecnología e Innovación Tecnológica. Facultad de Química e Ingeniería Química, Universidad Nacional Mayor de San Marcos. Lima, Perú
| | - José Pino
- Laboratorio de Reproducción y Biología del Desarrollo. Facultad de Ciencias Biológicas. Universidad Nacional Mayor de San Marcos. Lima, Perú
| | - Betty Shiga
- Laboratorio de Reproducción y Biología del Desarrollo. Facultad de Ciencias Biológicas. Universidad Nacional Mayor de San Marcos. Lima, Perú
| | - Dan Vivas-Ruiz
- Laboratorio de Biología Molecular. Facultad de Ciencias Biológicas. Universidad Nacional Mayor de San Marcos. Lima, Perú
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