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Rivera-Benítez JF, Martínez-Bautista R, González-Martínez R, De la Luz-Armendáriz J, Herrera-Camacho I, Rosas-Murrieta N, Márquez-Valdelamar L, Lara R. Phylogenetic and Molecular Analysis of the Porcine Epidemic Diarrhea Virus in Mexico during the First Reported Outbreaks (2013-2017). Viruses 2024; 16:309. [PMID: 38400084 PMCID: PMC10891996 DOI: 10.3390/v16020309] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024] Open
Abstract
The characteristics of the whole PEDV genome that has circulated in Mexico from the first outbreak to the present are unknown. We chose samples obtained from 2013 to 2017 and sequenced them, which enabled us to identify the genetic variation and phylogeny in the virus during the first four years that it circulated in Mexico. A 99% identity was found among the analyzed pandemic strains; however, the 1% difference affected the structure of the S glycoprotein, which is essential for the binding of the virus to the cellular receptor. The S protein induces the most efficacious antibodies; hence, these changes in structure could be implicated in the clinical antecedents of the outbreaks. Antigenic changes could also help PEDV avoid neutralization, even in the presence of previous immunity. The characterization of the complete genome enabled the identification of three circulating strains that have a deletion in ORF1a, which is present in attenuated Asian vaccine strains. The phylogenetic analysis of the complete genome indicates that the first PEDV outbreaks in Mexico were caused by INDEL strains and pandemic strains related to USA strains; however, the possibility of the entry of European strains exists, which may have caused the 2015 and 2016 outbreaks.
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Affiliation(s)
- José Francisco Rivera-Benítez
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Mexico City 04010, Mexico
| | | | | | - Jazmín De la Luz-Armendáriz
- Departamento de Medicina y Zootecnia de Rumiantes, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico;
| | - Irma Herrera-Camacho
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72000, Mexico; (I.H.-C.); (N.R.-M.)
| | - Nora Rosas-Murrieta
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72000, Mexico; (I.H.-C.); (N.R.-M.)
| | - Laura Márquez-Valdelamar
- Laboratorio de Secuenciación Genómica de la Biodiversidad y de la Salud, UNAM, Mexico City 04510, Mexico;
| | - Rocio Lara
- Programa de Maestría en Ciencias de la Producción y de la Salud Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
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Rosas-Murrieta NH, Rodríguez-Enríquez A, Herrera-Camacho I, Millán-Pérez-Peña L, Santos-López G, Rivera-Benítez JF. Comparative Review of the State of the Art in Research on the Porcine Epidemic Diarrhea Virus and SARS-CoV-2, Scope of Knowledge between Coronaviruses. Viruses 2024; 16:238. [PMID: 38400014 PMCID: PMC10892376 DOI: 10.3390/v16020238] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/17/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
This review presents comparative information corresponding to the progress in knowledge of some aspects of infection by the porcine epidemic diarrhea virus (PEDV) and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) coronaviruses. PEDV is an alphacoronavirus of great economic importance due to the million-dollar losses it generates in the pig industry. PEDV has many similarities to the SARS-CoV-2 betacoronavirus that causes COVID-19 disease. This review presents possible scenarios for SARS-CoV-2 based on the collected literature on PEDV and the tools or strategies currently developed for SARS-CoV-2 that would be useful in PEDV research. The speed of the study of SARS-CoV-2 and the generation of strategies to control the pandemic was possible due to the knowledge derived from infections caused by other human coronaviruses such as severe acute respiratory syndrome (SARS) and middle east respiratory syndrome (MERS). Therefore, from the information obtained from several coronaviruses, the current and future behavior of SARS-CoV-2 could be inferred and, with the large amount of information on the virus that causes COVID-19, the study of PEDV could be improved and probably that of new emerging and re-emerging coronaviruses.
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Affiliation(s)
- Nora H. Rosas-Murrieta
- Centro de Química, Laboratorio de Bioquímica y Biología Molecular, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (A.R.-E.); (I.H.-C.); (L.M.-P.-P.)
| | - Alan Rodríguez-Enríquez
- Centro de Química, Laboratorio de Bioquímica y Biología Molecular, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (A.R.-E.); (I.H.-C.); (L.M.-P.-P.)
- Posgrado en Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico
| | - Irma Herrera-Camacho
- Centro de Química, Laboratorio de Bioquímica y Biología Molecular, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (A.R.-E.); (I.H.-C.); (L.M.-P.-P.)
| | - Lourdes Millán-Pérez-Peña
- Centro de Química, Laboratorio de Bioquímica y Biología Molecular, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (A.R.-E.); (I.H.-C.); (L.M.-P.-P.)
| | - Gerardo Santos-López
- Centro de Investigación Biomédica de Oriente, Laboratorio de Biología Molecular y Virología, Instituto Mexicano del Seguro Social (IMSS), Metepec 74360, Mexico;
| | - José F. Rivera-Benítez
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Ciudad de México 38110, Mexico;
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Rivera-Benítez JF, De la Luz-Armendáriz J, Gómez-Núñez L, Diosdado Vargas F, Socci Escatell G, Ramírez-Medina E, Velázquez-Salinas L, Ramírez-Mendoza H, Coba Ayala MA, Tufiño-Loza C, Macías García M, Carrera-Aguirre V, Martínez-Bautista R, Martínez-Mercado MJ, Santos-López G, Herrera-Camacho I, Siañez-Estrada I, Zapata Moreno M. Salud porcina: historia, retos y perspectivas. REV MEX CIENC PECU 2021. [DOI: 10.22319/rmcp.v12s3.5879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
En los sistemas de producción porcina, uno de los puntos críticos que deben ser atendidos con estricto rigor, es la salud de los cerdos. La salud, es un componente estructural del bienestar animal y refleja un estado óptimo de los animales, lo que repercute directamente en un mayor desempeño productivo y mejores condiciones de desarrollo. Uno de los eslabones más frágiles de la salud de los cerdos, es la presencia de enfermedades infecciosas más importantes, las cuales pueden representar pérdidas hasta del 100 % de la producción, por lo cual, debe ser un tema de atención constante, y continuamente vigilado por el Médico Veterinario Zootecnista y los productores, en perfecta coordinación con las autoridades sanitarias oficiales. En la actualidad, la implementación de mejores prácticas en la cadena productiva es de interés para productores y consumidores. El control de las enfermedades infecciosas debe ser un tema de colaboración entre los diferentes actores del entorno y ser considerado un bien público, ya que las repercusiones negativas, pueden ser desde el nivel local hasta mundial. En la presente revisión, se abordará la temática relacionada con las principales enfermedades infecciosas que ponen en riesgo la salud porcina, el impacto, las principales aportaciones realizadas por el Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP) en sus 35 años de vida, específicamente en el Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad (CENID-SAI), anteriormente conocido como el emblemático CENID-Microbiología o Palo Alto.
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Cebada J, Perez-Santos M, Bandala C, Lara-Padilla E, Herrera-Camacho I, Rosas-Murrieta NH, Millán-Pérez Peña L, Monjaraz E, Flores A, Anaya-Ruiz M. OX40 agonists for cancer treatment: a patent review. Expert Opin Ther Pat 2020; 31:81-90. [PMID: 32945223 DOI: 10.1080/13543776.2021.1825688] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 12/20/2022]
Abstract
INTRODUCTION OX40 is an immune checkpoint in cancer and its presence in cancer is a good prognosis, making it a highly relevant target for the development of new immunotherapies. AREAS COVERED The patent literature reveals vital information on new trends in cancer therapies. The authors used the patent databases of the six major patent offices in the world: United States Patent and Trademark Office, European Patent Office, World Intellectual Property Organization, Japan Patent Office, State Office of Intellectual Property of China and Korean Intellectual Property Office, to generate a panorama of patents related to OX40 agonists. Specific patents have been grouped into innovative patents and adoption patents. EXPERT OPINION An increasing trend in the development of OX40 agonists in cancer, particularly in the years 2018 and 2019. United States was the leader in generating patents, followed by China and England. Major pharmaceutical companies have at least one anti-OX40 agonist, MEDI6469 and MEDI-0562 (AstraZeneca), PF-04518600 (Pfizer), GSK3174998 (GlaxoSmithKline), BMS-986,178 (Bristol-Myers Squibb) and MOXR0916 (Roche), which represent 68% of clinical trials conducted with OX40 agonists.
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Affiliation(s)
- Jorge Cebada
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, 13 Sur 2706, Col. Volcanes, CP 72410 Puebla, Puebla, Mexico
| | - Martin Perez-Santos
- Dirección de Innovación y Transferencia de Conocimiento, Benemérita Universidad Autónoma de Puebla, Puebla CP 72570, México
| | - Cindy Bandala
- Departamento de Neurociencias, Instituto Nacional de Rehabilitación, Ciudad de México, Mexico.,Escuela Superior de Medicina, Instituto Politécnico Nacional, Ciudad de México, México
| | - Eleazar Lara-Padilla
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Ciudad de México, México
| | - Irma Herrera-Camacho
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Edificio 103F, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, CP 72592 Puebla, Puebla, México
| | - Nora Hilda Rosas-Murrieta
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Edificio 103F, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, 72592 Puebla, Puebla, México
| | - Lourdes Millán-Pérez Peña
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Edificio 103F, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, 72592 Puebla, Puebla, México
| | - Eduardo Monjaraz
- Instituto de Fisiología, Benemerita Universidad Autónoma de Puebla, Av. 14 Sur 6301 Colonia Jardines de San Manuel CP 72570 Puebla, Puebla, Mexico
| | - Amira Flores
- Laboratorio de Biología Celular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla CP 74360, México
| | - Maricruz Anaya-Ruiz
- Laboratorio de Biología Celular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla CP 74360, México
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Siañez-Estrada LI, Rivera-Benítez JF, Rosas-Murrieta NH, Reyes-Leyva J, Santos-López G, Herrera-Camacho I. Immunoinformatics approach for predicting epitopes in HN and F proteins of Porcine rubulavirus. PLoS One 2020; 15:e0239785. [PMID: 32976525 PMCID: PMC7518572 DOI: 10.1371/journal.pone.0239785] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 09/14/2020] [Indexed: 12/19/2022] Open
Abstract
Porcine rubulavirus (PRV), which belongs to the family Paramyxoviridae, causes blue eye disease in pigs, characterized by encephalitis and reproductive failure in newborn and adult pigs, respectively. There is no effective treatment against PRV and no information on the effectiveness of the available vaccines. Continuous outbreaks have occurred in Mexico since the early 1980s, which have caused serious economic losses to pig producers. Vaccination can be used to control this disease. Searching for effective antigen candidates against PRV, we first sequenced the PAC1 F protein, then we used various immunoinformatics tools to predict antigenic determinants of B-cells and T-cells against the two glycoproteins of the virus (HN and F proteins). Finally, we used AutoDock Vina to determine the binding energies. We obtained the F gene sequence of a PRV strain collected in the early 1990s in Mexico and compared its amino acid profile with previous and more recent strains, obtaining an identity similarity of 97.78 to 99.26%. For the F proteins, seven linear B-cell epitopes, six conformational B-cell epitopes and twenty-nine T-cell MHC class I epitopes were predicted. For the HN proteins, sixteen linear B-cell epitopes, seven conformational B-cell epitopes and thirty-four T-cell MHC class I epitopes were predicted. The ATRSETDYY and AAYTTTTCF epitopes of the HN protein might be important for neutralizing the viral infection. We determined the in silico binding energy between the predicted epitopes on the F and HN proteins and swine MHC-I molecules. The binding energy of these epitopes ranged from -5.8 to -7.8 kcal/mol. The present study aimed to assess the use of HN and F proteins as antigens, either as recombinant proteins or as a series of peptides that could activate different responses of the immune system. This may help identify relevant immunogens, saving time and costs in the development of new vaccines or diagnostic tools.
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Affiliation(s)
- Luis I. Siañez-Estrada
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México
- Posgrado en Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, México
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social (IMSS), Metepec, México
| | - José F. Rivera-Benítez
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Ciudad de México, México
| | - Nora H. Rosas-Murrieta
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Julio Reyes-Leyva
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social (IMSS), Metepec, México
| | - Gerardo Santos-López
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social (IMSS), Metepec, México
| | - Irma Herrera-Camacho
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México
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Márquez-Domínguez L, Reyes-Leyva J, Herrera-Camacho I, Santos-López G, Scior T. Five Novel Non-Sialic Acid-Like Scaffolds Inhibit In Vitro H1N1 and H5N2 Neuraminidase Activity of Influenza a Virus. Molecules 2020; 25:molecules25184248. [PMID: 32947893 PMCID: PMC7571124 DOI: 10.3390/molecules25184248] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 07/20/2020] [Revised: 09/02/2020] [Accepted: 09/04/2020] [Indexed: 01/04/2023] Open
Abstract
Neuraminidase (NA) of influenza viruses enables the virus to access the cell membrane. It degrades the sialic acid contained in extracellular mucin. Later, it is responsible for releasing newly formed virions from the membrane of infected cells. Both processes become key functions within the viral cycle. Therefore, it is a therapeutic target for research of the new antiviral agents. Structure–activity relationships studies have revealed which are the important functional groups for the receptor–ligand interaction. Influenza virus type A NA activity was inhibited by five scaffolds without structural resemblance to sialic acid. Intending small organic compound repositioning along with drug repurposing, this study combined in silico simulations of ligand docking into the known binding site of NA, along with in vitro bioassays. The five proposed scaffolds are N-acetylphenylalanylmethionine, propanoic 3-[(2,5-dimethylphenyl) carbamoyl]-2-(piperazin-1-yl) acid, 3-(propylaminosulfonyl)-4-chlorobenzoic acid, ascorbic acid (vitamin C), and 4-(dipropylsulfamoyl) benzoic acid (probenecid). Their half maximal inhibitory concentration (IC50) was determined through fluorometry. An acidic reagent 2′-O-(4-methylumbelliferyl)-α-dN-acetylneuraminic acid (MUNANA) was used as substrate for viruses of human influenza H1N1 or avian influenza H5N2. Inhibition was observed in millimolar ranges in a concentration-dependent manner. The IC50 values of the five proposed scaffolds ranged from 6.4 to 73 mM. The values reflect a significant affinity difference with respect to the reference drug zanamivir (p < 0.001). Two compounds (N-acetyl dipeptide and 4-substituted benzoic acid) clearly showed competitive mechanisms, whereas ascorbic acid reflected non-competitive kinetics. The five small organic molecules constitute five different scaffolds with moderate NA affinities. They are proposed as lead compounds for developing new NA inhibitors which are not analogous to sialic acid.
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Affiliation(s)
- Luis Márquez-Domínguez
- Laboratorio de Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla 74630, Mexico; (L.M.-D.); (J.R.-L.)
- Posgrado en Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico
- Laboratorio de Simulaciones Computacionales Moleculares, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72592, Mexico
| | - Julio Reyes-Leyva
- Laboratorio de Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla 74630, Mexico; (L.M.-D.); (J.R.-L.)
| | - Irma Herrera-Camacho
- Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico;
| | - Gerardo Santos-López
- Laboratorio de Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla 74630, Mexico; (L.M.-D.); (J.R.-L.)
- Correspondence: (G.S.-L.); (T.S.); Tel.: +52-244-444-0122 (G.S.-L.)
| | - Thomas Scior
- Laboratorio de Simulaciones Computacionales Moleculares, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72592, Mexico
- Correspondence: (G.S.-L.); (T.S.); Tel.: +52-244-444-0122 (G.S.-L.)
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Armenta-Castro E, Reyes-Vallejo T, Máximo-Sánchez D, Herrera-Camacho I, López-López G, Reyes-Carmona S, Conde-Rodríguez I, Ramírez-Díaz I, Aguilar-Lemarroy A, Jave-Suárez LF, Milflores-Flores L, Santos-Lopez G, Reyes-Leyva J, Vallejo-Ruiz V. Histone H3K9 and H3K14 acetylation at the promoter of the LGALS9 gene is associated with mRNA levels in cervical cancer cells. FEBS Open Bio 2020; 10:2305-2315. [PMID: 32902187 PMCID: PMC7609790 DOI: 10.1002/2211-5463.12973] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 07/11/2020] [Revised: 08/19/2020] [Accepted: 08/24/2020] [Indexed: 12/24/2022] Open
Abstract
Galectin‐9 levels have been reported to be altered in several cancer types, but the mechanism that regulates the expression of Galectin‐9 has not been clarified. Galectin‐9 is encoded by the LGALS9 gene, which gives rise to eight mRNA variants. The aims of this study were: (a) to identify the mRNA variants of LGALS9, (b) to characterize CpG methylation and H3K9 and H3K14 histone acetylation at the promoter of the LGALS9 gene, and (c) to characterize the relationship between these modifications and LGALS9 expression level in cervical cancer cells. All mRNA variants were detected in HaCaT (nontumoural keratinocytes) and SiHa cells, and seven were observed in HeLa cells. The promoter region of LGALS9 contains eight CpG dinucleotides. No hypermethylation pattern related to low LGALS9 expression was identified in tumour cells. Chromatin immunoprecipitation analysis demonstrated higher acetylation of H3K9ac and H3K14ac in HaCaT cells, which was related to higher mRNA levels. The presence of the mRNA variants suggests that alternative splicing may regulate the expression of galectin‐9 isoforms. The results of this study suggest that histone acetylation, but not promoter CpG methylation, may be involved in the transcriptional regulation of the LGALS9 gene.
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Affiliation(s)
- Erick Armenta-Castro
- Laboratorio de Biología Molecular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, México.,Posgrado en Ciencias Químicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Tania Reyes-Vallejo
- Departamento de Ciencias Químico-Biológicas, Universidad de las Américas Puebla, Puebla, México
| | - Daniel Máximo-Sánchez
- Posgrado en Ciencias Químicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Irma Herrera-Camacho
- Posgrado en Ciencias Químicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Gustavo López-López
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Sandra Reyes-Carmona
- Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Ileana Conde-Rodríguez
- Laboratorio de Biología Molecular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, México.,Posgrado en Ciencias Químicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Ivonne Ramírez-Díaz
- Laboratorio de Biología Molecular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, México.,Posgrado en Ciencias Químicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Adriana Aguilar-Lemarroy
- Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, México
| | - Luis Felipe Jave-Suárez
- Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, México
| | | | - Gerardo Santos-Lopez
- Laboratorio de Biología Molecular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, México
| | - Julio Reyes-Leyva
- Laboratorio de Biología Molecular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, México
| | - Verónica Vallejo-Ruiz
- Laboratorio de Biología Molecular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, México
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8
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Millán-Pérez Peña L, Martin PS, Herrera-Camacho I, Bandala C, Anaya-Ruiz M. Colon carcinoma treatment using bispecific anti-GITR/CTLA-4 antibodies: a patent evaluation of WO2018091739. Expert Opin Ther Pat 2020; 30:307-311. [PMID: 32106724 DOI: 10.1080/13543776.2020.1732352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Introduction: GITR is a receptor that increases the activation of T lymphocytes against tumor cells. There is a great need to discover and develop new therapies focused on activating GITR to increase the immune response in various types of cancer. The authors of WO2018091739 patent propose a method to eradicate cancer by using bispecific anti-GITR/anti-CTLA-4 antibodies.Areas covered: WO2018091739 patent describes anti-GITR/anti-CTLA-4 antibodies, pharmaceutical composition that contains it, and their application for cancer treatment, particularly colon carcinoma. Anti-GITR/anti-CTLA-4 antibodies are used at a dosage of 0.0003-3 mg antibody/kg patient weight and is suspended in an isotonic solution consisting of sodium phosphate, sucrose, NaCl, and polysorbate 80.Expert opinion: WO2018091739 only demonstrates that bispecific antibodies activate T cells, an antibody-dependent cellular cytotoxicity of CHO cells, and tumor inhibition in murine models of colon carcinoma. There are no clinical trials that show that treatment with bispecific antibodies can induce an antitumor response in cancer patients.
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Affiliation(s)
- Lourdes Millán-Pérez Peña
- Laboratorio De Bioquímica Y Biología Molecular, Centro De Química Del Instituto De Ciencias (ICUAP), Ciudad Universitaria, Benemérita Universidad Autónoma De Puebla, Puebla, México
| | - Perez-Santos Martin
- Dirección De Innovación Y Transferencia De Conocimiento, Benemérita Universidad Autónoma De Puebla, Puebla, México
| | - Irma Herrera-Camacho
- Laboratorio De Bioquímica Y Biología Molecular, Centro De Química Del Instituto De Ciencias (ICUAP), Ciudad Universitaria, Benemérita Universidad Autónoma De Puebla, Puebla, México
| | - Cindy Bandala
- Departamento De Neurociencias, Instituto Nacional De Rehabilitación, Ciudad De México, Mexico
| | - Maricruz Anaya-Ruiz
- Laboratorio De Biología Celular, Centro De Investigación Biomédica De Oriente, Instituto Mexicano Del Seguro Social, Puebla, México
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9
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Perez-Santos M, Anaya-Ruiz M, Herrera-Camacho I, Rosas-Murrieta NH, Millán-Pérez Peña L. Cancer combinatorial immunotherapy using etigilimab and nivolumab: a patent evaluation of WO2018102536. Expert Opin Ther Pat 2020; 30:83-86. [DOI: 10.1080/13543776.2020.1709445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Martin Perez-Santos
- Dirección de Innovación y Transferencia de Conocimiento, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Maricruz Anaya-Ruiz
- Laboratorio de Biología Celular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, México
| | - Irma Herrera-Camacho
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Nora Hilda Rosas-Murrieta
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Lourdes Millán-Pérez Peña
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, México
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10
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Perez-Santos M, Anaya-Ruiz M, Herrera-Camacho I, Millán-Pérez Peña L, Rosas-Murrieta NH. Bispecific anti-OX40/CTLA-4 antibodies for advanced solid tumors: a patent evaluation of WO2018202649. Expert Opin Ther Pat 2019; 29:921-924. [DOI: 10.1080/13543776.2019.1681400] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Martin Perez-Santos
- Oficina de Comercialización de Tecnología, Centro Universitario de Vinculación y Transferencia de Tecnología, Benemérita Universidad Autónoma de Puebla, Puebla, Puebla, México
| | - Maricruz Anaya-Ruiz
- Laboratorio de Biología Celular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, Mexico
| | - Irma Herrera-Camacho
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Edificio 103F, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, Puebla, Mexico
| | - Lourdes Millán-Pérez Peña
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Edificio 103F, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, Puebla, Mexico
| | - Nora Hilda Rosas-Murrieta
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Edificio 103F, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, Puebla, Mexico
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11
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Herrera-Camacho I, Anaya-Ruiz M, Perez-Santos M, Millán-Pérez Peña L, Bandala C, Landeta G. Cancer immunotherapy using anti-TIM3/PD-1 bispecific antibody: a patent evaluation of EP3356411A1. Expert Opin Ther Pat 2019; 29:587-593. [PMID: 31241380 DOI: 10.1080/13543776.2019.1637422] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Introduction: TIM3 and PD-1 are checkpoint inhibitors in cancer that coordinate the downregulation of the proliferation of antigen-specific lymphocytes. There is a great need to discover and develop new therapies focused on inhibiting the action of TIM3 and PD-1 and consequently improving the immune response in the various types of cancer. The authors of patent EP3356411A1 propose several anti-TIM3/anti-PD-1 bispecific antibodies, as well as the method for producing them and their pharmacological application in the treatment of cancer. Areas covered: Patent EP3356411A1 describes a method by producing anti-TIM3/anti-PD-1 bispecific antibodies and their potential in cancer treatment. Expert opinion: Data supporting the patent demonstrate the ability by producing anti-TIM3/anti-PD-1 bispecific antibodies. Although the proposed methodology is very interesting and promising, further studies are necessary to assess the clinical applicability of the inventions on cancer.
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Affiliation(s)
- Irma Herrera-Camacho
- a Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Edificio 103F, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla , Puebla , Mexico
| | - Maricruz Anaya-Ruiz
- b Laboratorio de Biología Celular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec , Puebla , Mexico
| | - Martin Perez-Santos
- c Oficina de Comercialización de Tecnología, Dirección de Innovación y Transferencia de Conocimiento, Benemérita Universidad Autónoma de Puebla , Puebla , México
| | - Lourdes Millán-Pérez Peña
- a Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Edificio 103F, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla , Puebla , Mexico
| | - Cindy Bandala
- d Departamento de Neurociencias, Instituto Nacional de Rehabilitación , Ciudad de México , Mexico
| | - Gerardo Landeta
- e Coordinación de Investigación Aplicada, Centro Universitario de Vinculación y Transferencia de Tecnología, Benemérita Universidad Autónoma de Puebla , Puebla , México
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12
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Jasso-Miranda C, Herrera-Camacho I, Flores-Mendoza LK, Dominguez F, Vallejo-Ruiz V, Sanchez-Burgos GG, Pando-Robles V, Santos-Lopez G, Reyes-Leyva J. Antiviral and immunomodulatory effects of polyphenols on macrophages infected with dengue virus serotypes 2 and 3 enhanced or not with antibodies. Infect Drug Resist 2019; 12:1833-1852. [PMID: 31303775 PMCID: PMC6611719 DOI: 10.2147/idr.s210890] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 05/26/2019] [Indexed: 12/30/2022] Open
Abstract
Background: There is a lack of specific antiviral therapy against dengue virus (DENV) in current use. Therefore, a great proportion of dengue cases progress to severe clinical forms due to a complex interplay between virus and host immune response. It has been hypothesized that heterotypic non-neutralizing antibodies enhance DENV infection in phagocytic cells, and this induces an inflammatory response that is involved in the pathogenesis of severe dengue. Purpose: To identify the antiviral and immunomodulatory effects of polyphenols on dengue virus infection. Methods: Human U937-DC-SIGN macrophages were infected with DENV serotypes 2 or 3 in the presence or not of enhancing antibody 4G2. Viral titers and the secretion of tumor necrosis factor-alpha, IL-6, IL-10 and interferon-alpha were analyzed timely. Results: DENV infection alone induced high production of IL-6 and TNF-α, but in the presence of 4G2 antibody, viral titers and TNF-α secretion were potentiated. Based on anti-inflammatory antecedents, the polyphenols curcumin, fisetin, resveratrol, apigenin, quercetin and rutin were tested for antiviral and immunomodulatory properties. Only quercetin and fisetin inhibited DENV-2 and DENV-3 infection in the absence or presence of enhancing antibody (>90%, p<0.001); they also inhibited TNF-α and IL-6 secretion (p<0.001). Conclusion: Quercetin and fisetin down-regulate the production of proinflammatory cytokines induced by DENV infection enhanced by antibodies a mechanism involved in severe dengue.
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Affiliation(s)
- Carolina Jasso-Miranda
- Laboratory of Immunology and Virology, East Biomedical Research Center, Mexican Institute of Social Security (IMSS), CP 74360 Metepec, Puebla, México.,Laboratory of Biochemistry and Molecular Biology, Center of Chemistry, Institute of Sciences, Meritorious Autonomous University of Puebla, CP 72570 San Manuel, Puebla, Mexico
| | - Irma Herrera-Camacho
- Laboratory of Biochemistry and Molecular Biology, Center of Chemistry, Institute of Sciences, Meritorious Autonomous University of Puebla, CP 72570 San Manuel, Puebla, Mexico
| | - Lilian Karem Flores-Mendoza
- Department of Chemical, Biologic and Agricultural Sciences, Science and Enginery Division, University of Sonora, CP 85880 Navojoa, Sonora, Mexico
| | - Fabiola Dominguez
- Laboratory of Immunology and Virology, East Biomedical Research Center, Mexican Institute of Social Security (IMSS), CP 74360 Metepec, Puebla, México
| | - Veronica Vallejo-Ruiz
- Laboratory of Immunology and Virology, East Biomedical Research Center, Mexican Institute of Social Security (IMSS), CP 74360 Metepec, Puebla, México
| | | | - Victoria Pando-Robles
- Infectious Disease Research Center, National Institute of Public Health, CP 62100 Cuernavaca, Morelos, Mexico
| | - Gerardo Santos-Lopez
- Laboratory of Immunology and Virology, East Biomedical Research Center, Mexican Institute of Social Security (IMSS), CP 74360 Metepec, Puebla, México
| | - Julio Reyes-Leyva
- Laboratory of Immunology and Virology, East Biomedical Research Center, Mexican Institute of Social Security (IMSS), CP 74360 Metepec, Puebla, México
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13
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Perez-Santos M, Anaya-Ruiz M, Herrera-Camacho I, Millán-Pérez Peña L. Cancer combinatorial immunotherapy using anti-OX40 agonist and anti-PD-L1 antagonist: a patent evaluation of US2018256711A1. Expert Opin Ther Pat 2019; 29:481-485. [DOI: 10.1080/13543776.2019.1634690] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Martin Perez-Santos
- Oficina de Comercialización de Tecnología, Dirección de Innovación y Transferencia de Conocimiento, Benemérita Universidad Autónoma de Puebla, Puebla, CP, México
| | - Maricruz Anaya-Ruiz
- Laboratorio de Biología Celular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Puebla, CP, Mexico
| | - Irma Herrera-Camacho
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Edificio 103F, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, CP, Mexico
| | - Lourdes Millán-Pérez Peña
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias (ICUAP), Edificio 103F, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, CP, Mexico
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14
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Sarmiento-Salinas FL, Delgado-Magallón A, Montes-Alvarado JB, Ramírez-Ramírez D, Flores-Alonso JC, Cortés-Hernández P, Reyes-Leyva J, Herrera-Camacho I, Anaya-Ruiz M, Pelayo R, Millán-Pérez-Peña L, Maycotte P. Breast Cancer Subtypes Present a Differential Production of Reactive Oxygen Species (ROS) and Susceptibility to Antioxidant Treatment. Front Oncol 2019; 9:480. [PMID: 31231612 PMCID: PMC6568240 DOI: 10.3389/fonc.2019.00480] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [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: 04/03/2019] [Accepted: 05/21/2019] [Indexed: 12/20/2022] Open
Abstract
Due to their crucial role in cell metabolism and homeostasis, alterations in mitochondrial biology and function have been related to the progression of diverse diseases including cancer. One of the consequences associated to mitochondrial dysfunction is the production of reactive oxygen species (ROS). ROS are known to have a controversial role during cancer initiation and progression and although several studies have tried to manipulate intracellular ROS levels using antioxidants or pro-oxidation conditions, it is not yet clear how to target oxidation for cancer therapy. In this study, we found differences in mitochondrial morphology in breast cancer cells when compared to a non-tumorigenic cell line and differences in mitochondrial function among breast cancer subtypes when exploring gene-expression data from the TCGA tumor dataset. Interestingly, we found increased ROS levels in triple negative breast cancer (TNBC) cell lines and a dependency on ROS for survival since antioxidant treatment induced cell death in TNBC cells but not in an estrogen receptor positive (ER+) cell line. Moreover, we identified the mitochondria as the main source of ROS in TNBC cell lines. Our results indicate a potential use for ROS as a target for therapy in the TNBC subtype which currently has the worst prognosis among all breast cancers and remains as the only breast cancer subtype which lacks a targeted therapy.
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Affiliation(s)
- Fabiola Lilí Sarmiento-Salinas
- Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Puebla, Mexico.,Posgrado en Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Alam Delgado-Magallón
- Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Puebla, Mexico.,Departamento de Bioquímica, Instituto Tecnológico de Acapulco, Acapulco de Juárez, Mexico
| | | | - Dalia Ramírez-Ramírez
- Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Puebla, Mexico
| | | | - Paulina Cortés-Hernández
- Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Puebla, Mexico
| | - Julio Reyes-Leyva
- Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Puebla, Mexico
| | - Irma Herrera-Camacho
- Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Maricruz Anaya-Ruiz
- Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Puebla, Mexico
| | - Rosana Pelayo
- Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Puebla, Mexico
| | | | - Paola Maycotte
- CONACYT-Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Puebla, Mexico
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15
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Perez-Santos M, Anaya-Ruiz M, Cebada J, Herrera-Camacho I. Treatment of cancer with a combination of LAG-3Ig and anti-PD-1/anti-PD-L1 antibodies: a patent evaluation of US2018271940 A1. Expert Opin Ther Pat 2019; 29:311-314. [DOI: 10.1080/13543776.2019.1608947] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Martin Perez-Santos
- Oficina de Comercialización de Tecnología, Centro Universitario de Vinculación y Transferencia de Tecnología, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Maricruz Anaya-Ruiz
- Laboratorio de Biología Celular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, Mexico
| | - Jorge Cebada
- Facultad de Medicina, Benémerita Universidad Autónoma de Puebla, Puebla, México
| | - Irma Herrera-Camacho
- Laboratorio de Bioquímica, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México
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16
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Santos-López G, Borraz-Argüello MT, Márquez-Domínguez L, Flores-Alonso JC, Ramírez-Mendoza H, Priem B, Fort S, Vallejo-Ruiz V, Reyes-Leyva J, Herrera-Camacho I. Neuraminidase activity of blue eye disease porcine rubulavirus: Specificity, affinity and inhibition studies. Res Vet Sci 2017; 114:218-224. [PMID: 28502901 DOI: 10.1016/j.rvsc.2017.05.008] [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] [Received: 12/24/2016] [Revised: 05/04/2017] [Accepted: 05/06/2017] [Indexed: 10/19/2022]
Abstract
Porcine rubulavirus (PorPV), also known as La Piedad Michoacan Virus (LPMV) causes encephalitis and reproductive failure in newborn and adult pigs, respectively. The hemagglutinin-neuraminidase (HN) glycoprotein is the most exposed and antigenic of the virus proteins. HN plays central roles in PorPV infection; i.e., it recognizes sialic acid-containing cell receptors that mediate virus attachment and penetration; in addition, its neuraminidase (sialic acid releasing) activity has been proposed as a virulence factor. This work describes the purification and characterization of PorPV HN protein (isolate PAC1). The specificity of neuraminidase is restricted to sialyl(α2,3)lactose (3SL). HN showed typical Michaelis-Menten kinetics with fetuin as substrate (km=0.029μM, Vmax=522.8nmolmin-1mg-1). When 3SL was used as substrate, typical cooperative kinetics were found (S50=0.15μM, Vmax=154.3nmolmin-1mg-1). The influenza inhibitor zanamivir inhibited the PorPV neuraminidase with IC50 of 0.24μM. PorPV neuraminidase was activated by Ca2+ and inhibited by nucleoside triphosphates with the level of inhibition depending on phosphorylation level. The present results open possibilities to study the role of neuraminidase in the pathogenicity of PorPV infection and its potential inhibitors.
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Affiliation(s)
- Gerardo Santos-López
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, Mexico.
| | - María T Borraz-Argüello
- Departamento de Ingeniería en Biotecnología Universidad Politécnica de Puebla, Calpan, Puebla, Mexico
| | - Luis Márquez-Domínguez
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, Mexico
| | - Juan Carlos Flores-Alonso
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, Mexico
| | - Humberto Ramírez-Mendoza
- Departamento de producción Animal Cerdos, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México, D.F., Mexico
| | - Bernard Priem
- Université Grenoble Alpes, CERMAV, F-38000 Grenoble, France; CNRS, CERMAV, F-38000 Grenoble, France
| | - Sébastien Fort
- Université Grenoble Alpes, CERMAV, F-38000 Grenoble, France; CNRS, CERMAV, F-38000 Grenoble, France
| | - Verónica Vallejo-Ruiz
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, Mexico
| | - Julio Reyes-Leyva
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, Mexico
| | - Irma Herrera-Camacho
- Laboratorio de Bioquímica, Centro de Química, Instituto de Ciencias, Universidad Autónoma de Puebla, Puebla, Mexico.
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17
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Estrada-Jiménez T, Millán-Pérez Peña L, Flores-Mendoza L, Sedeño-Monge V, Santos-López G, Rosas-Murrieta N, Reyes-Carmona S, Terán-Cabanillas E, Hernández J, Herrera-Camacho I, Vallejo-Ruiz V, Reyes-Leyva J. Upregulation of the Suppressors of Cytokine Signaling 1 and 3 Is Associated with Arrest of Phosphorylated-STAT1 Nuclear Importation and Reduced Innate Response in Denguevirus-Infected Macrophages. Viral Immunol 2015; 29:95-104. [PMID: 26709547 DOI: 10.1089/vim.2014.0136] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
To clarify whether the suppressors of cytokine signaling (SOCS) are associated with denguevirus (DENV) evasion of the antiviral response, we analyzed the expression kinetics of SOCS1 and SOCS3 and of the antiviral genes MxA and OAS during DENV infection of U937 macrophages that were or not treated with interferon (IFN)-α. DENV infection produced a viral titer three times higher in untreated than in IFN-α-treated cells (p < 0.001 at 72 h postinfection [p.i.]). Partial inhibition of DENV replication was associated with reduced expression of MxA and OAS antiviral genes as well as higher SOCS1 and SOCS3 expression in DENV-infected cells than in cells treated only with IFN-α. Complete loss of phosphorylated-signal transducer and activator of transcription (p-STAT)2 and reduced nuclear importation of p-STAT1 were observed in DENV-infected cells compared to IFN-α treatment that induced p-STAT1 and p-STAT2. Our data thus suggest that overexpression of SOCS1 and SOCS3 induced by DENV infection leads to impairment of antiviral response through the inhibition of STAT functionality.
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Affiliation(s)
- Tania Estrada-Jiménez
- 1 Laboratorio de Virología y Biología Molecular, Centro de Investigación Biomédica de Oriente, HGZ5, Instituto Mexicano del Seguro Social , Metepec, Puebla, México .,2 Laboratorio de Bioquímica y Biología Molecular, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla , Puebla, México
| | - Lourdes Millán-Pérez Peña
- 2 Laboratorio de Bioquímica y Biología Molecular, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla , Puebla, México
| | - Lilian Flores-Mendoza
- 1 Laboratorio de Virología y Biología Molecular, Centro de Investigación Biomédica de Oriente, HGZ5, Instituto Mexicano del Seguro Social , Metepec, Puebla, México
| | - Virginia Sedeño-Monge
- 3 Departamento de Ciencias de la Salud, Universidad Popular Autónoma del Estado de Puebla , Puebla, México
| | - Gerardo Santos-López
- 1 Laboratorio de Virología y Biología Molecular, Centro de Investigación Biomédica de Oriente, HGZ5, Instituto Mexicano del Seguro Social , Metepec, Puebla, México
| | - Nora Rosas-Murrieta
- 2 Laboratorio de Bioquímica y Biología Molecular, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla , Puebla, México
| | - Sandra Reyes-Carmona
- 2 Laboratorio de Bioquímica y Biología Molecular, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla , Puebla, México
| | - Eli Terán-Cabanillas
- 4 Laboratorio de Inmunología, Centro de Investigación en Alimentación y Desarrollo A.C. , Hermosillo, Sonora, Mexico
| | - Jesus Hernández
- 4 Laboratorio de Inmunología, Centro de Investigación en Alimentación y Desarrollo A.C. , Hermosillo, Sonora, Mexico
| | - Irma Herrera-Camacho
- 2 Laboratorio de Bioquímica y Biología Molecular, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla , Puebla, México
| | - Verónica Vallejo-Ruiz
- 1 Laboratorio de Virología y Biología Molecular, Centro de Investigación Biomédica de Oriente, HGZ5, Instituto Mexicano del Seguro Social , Metepec, Puebla, México
| | - Julio Reyes-Leyva
- 1 Laboratorio de Virología y Biología Molecular, Centro de Investigación Biomédica de Oriente, HGZ5, Instituto Mexicano del Seguro Social , Metepec, Puebla, México
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18
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Palma-Ocampo HK, Flores-Alonso JC, Vallejo-Ruiz V, Reyes-Leyva J, Flores-Mendoza L, Herrera-Camacho I, Rosas-Murrieta NH, Santos-López G. Interferon lambda inhibits dengue virus replication in epithelial cells. Virol J 2015; 12:150. [PMID: 26411318 PMCID: PMC4584467 DOI: 10.1186/s12985-015-0383-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [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: 03/04/2015] [Accepted: 09/16/2015] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND In viral disease, infection is controlled at the cellular level by type I interferon (IFN-I), but dengue virus (DENV) has the ability to inhibit this response. Type III interferon, also known as lambda IFN (IFN-III or IFN-λ), is a complementary pathway to the antiviral response by IFN-I. This work analyzed the IFN-λ (IFN-III) mediated antiviral response against DENV serotype 2 (DENV-2) infection. METHODS Dengue fever patients were sampled to determine their IFN-λ levels by ELISA. To study the IFN-λ response during DENV infection we selected the epithelial cell line C33-A, and we demonstrated that it is permissive to DENV-2 infection. The effect of IFN-λ on virus replication was determined in these cells, in parallel to the expression of IFN-stimulated genes (ISGs), and Suppressor of Cytokine Signaling (SOCS), genes measured by RT-qPCR. RESULTS We found increased (~1.8 times) serological IFN-λ in dengue fever patients compared to healthy blood donors. IFN-λ inhibited DENV-2 replication in a dose-dependent manner in vitro. The reduction of viral titer corresponded with increased ISG mRNA levels (MX1 and OAS1), with the highest inhibition occurring at ISG's peak expression. Presence of IFN-negative regulators, SOCS1 and SOCS3, during DENV-2 infection was associated with reduced IFN-λ1 expression. CONCLUSIONS Evidence described here suggests that IFN-λ is a good candidate inhibitor of viral replication in dengue infection. Mechanisms for the cellular and organismal interplay between DENV and IFN- λ need to be further studied as they could provide insights into strategies to treat this disease. Furthermore, we report a novel epithelial model to study dengue infection in vitro.
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Affiliation(s)
- Helen K Palma-Ocampo
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, México.
- Posgrado en Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, México.
| | - Juan C Flores-Alonso
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, México.
| | - Verónica Vallejo-Ruiz
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, México.
| | - Julio Reyes-Leyva
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, México.
| | - Lilian Flores-Mendoza
- Laboratorio de Inmunología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Puebla, México.
| | - Irma Herrera-Camacho
- Laboratorio de Bioquímica, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México.
| | - Nora H Rosas-Murrieta
- Laboratorio de Bioquímica, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, México.
| | - Gerardo Santos-López
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, México.
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Lara-Sampablo A, Flores-Alonso JC, De Jesús-Ortega N, Santos-López G, Vallejo-Ruiz V, Rosas-Murrieta N, Reyes-Carmona S, Herrera-Camacho I, Reyes-Leyva J. Transfection of influenza A virus nuclear export protein induces the expression of tumor necrosis factor alpha. Virus Res 2014; 185:1-9. [DOI: 10.1016/j.virusres.2014.03.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 02/09/2014] [Accepted: 03/11/2014] [Indexed: 11/29/2022]
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Alatriste V, Herrera-Camacho I, I. Martínez M, D. Limón I, González-Flores O, Luna F. Sensory denervation with capsaicin reduces ovarian follicular development and delays the onset of puberty in guinea pigs. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/arsci.2013.13005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Flores-Ocelotl MDR, Rosas-Murrieta NH, Vallejo-Ruiz V, Reyes-Leyva J, Herrera-Camacho I, Santos-López G. Transcription of interferon stimulated genes in response to porcine rubulavirus infection in vitro. Braz J Microbiol 2011. [DOI: 10.1590/s1517-83822011000300041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Flores-Ocelotl MDR, Rosas-Murrieta NH, Vallejo-Ruiz V, Reyes-Leyva J, Herrera-Camacho I, Santos-López G. Transcription of interferon stimulated genes in response to Porcine rubulavirus infection in vitro. Braz J Microbiol 2011; 42:1167-75. [PMID: 24031738 PMCID: PMC3768783 DOI: 10.1590/s1517-838220110003000041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 07/25/2010] [Accepted: 01/31/2011] [Indexed: 12/24/2022] Open
Abstract
Porcine rubulavirus (PoRV) is an emerging virus causing meningo-encephalitis and reproductive failures in pigs. Little is known about the pathogenesis and immune evasion of this virus; therefore research on the mechanisms underlying tissue damage during infection is essential. To explore these mechanisms, the effect of PoRV on the transcription of interferon (IFN) pathway members was analyzed in vitro by semi-quantitative RT-PCR. Ten TCID50 of PoRV stimulated transcription of IFNα, IFNβ, STAT1, STAT2, p48 and OAS genes in neuroblastoma cells, whereas infection with 100 TCID50 did not stimulate transcription levels more than non-infected cells. When the cells were primed with IFNα, infection with 1 TCDI50 of PoRV sufficed to stimulate the transcription of the same genes, but 10 and 100 TCID50 did not modify the transcription level of those genes as compared with non-infected and primed controls. MxA gene transcription was observed only when the cells were primed with IFNα and stimulated with 10 TCID50, whereas 100 TCID50 of PoRV did not modify the MxA transcription level as compared to non-infected and primed cells. Our results show that PoRV replication at low titers stimulates the expression of IFN-responsive genes in neuroblastoma cells, and suggest that replication of PoRV at higher titers inhibits the transcription of several members of the IFN pathway. These findings may contribute to the understanding of the pathogenesis of PoRV.
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Affiliation(s)
- María Del Rosario Flores-Ocelotl
- Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social , Puebla , México
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Rosas-Murrieta NH, Herrera-Camacho I, Palma-Ocampo H, Santos-López G, Reyes-Leyva J. Interaction of mumps virus V protein variants with STAT1-STAT2 heterodimer: experimental and theoretical studies. Virol J 2010; 7:263. [PMID: 20937132 PMCID: PMC2958915 DOI: 10.1186/1743-422x-7-263] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [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: 06/11/2010] [Accepted: 10/11/2010] [Indexed: 12/24/2022] Open
Abstract
Background Mumps virus V protein has the ability to inhibit the interferon-mediated antiviral response by inducing degradation of STAT proteins. Two virus variants purified from Urabe AM9 mumps virus vaccine differ in their replication and transcription efficiency in cells primed with interferon. Virus susceptibility to IFN was associated with insertion of a non-coded glycine at position 156 in the V protein (VGly) of one virus variant, whereas resistance to IFN was associated with preservation of wild-type phenotype in the V protein (VWT) of the other variant. Results VWT and VGly variants of mumps virus were cloned and sequenced from Urabe AM9 vaccine strain. VGly differs from VWT protein because it possesses an amino acid change Gln103Pro (Pro103) and the Gly156 insertion. The effect of V protein variants on components of the interferon-stimulated gene factor 3 (ISGF3), STAT1 and STAT2 proteins were experimentally tested in cervical carcinoma cell lines. Expression of VWT protein decreased STAT1 phosphorylation, whereas VGly had no inhibitory effect on either STAT1 or STAT2 phosphorylation. For theoretical analysis of the interaction between V proteins and STAT proteins, 3D structural models of VWT and VGly were predicted by comparing with simian virus 5 (SV5) V protein structure in complex with STAT1-STAT2 heterodimer. In silico analysis showed that VWT-STAT1-STAT2 complex occurs through the V protein Trp-motif (W174, W178, W189) and Glu95 residue close to the Arg409 and Lys415 of the nuclear localization signal (NLS) of STAT2, leaving exposed STAT1 Lys residues (K85, K87, K296, K413, K525, K679, K685), which are susceptible to proteasome degradation. In contrast, the interaction between VGly and STAT1-STAT2 heterodimer occurs in a region far from the NLS of STAT2 without blocking of Lys residues in both STAT1 and STAT2. Conclusions Our results suggest that VWT protein of Urabe AM9 strain of mumps virus may be more efficient than VGly to inactivate both the IFN signaling pathway and antiviral response due to differences in their finest molecular interaction with STAT proteins.
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Affiliation(s)
- Nora H Rosas-Murrieta
- Laboratorio de Bioquímica y Biología Molecular, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Edif, 103 H, CU-BUAP, San Manuel, CP 72550, Puebla, México.
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Santos-López G, Scior T, Borraz-Argüello MDT, Vallejo-Ruiz V, Herrera-Camacho I, Tapia-Ramírez J, Reyes-Leyva J. Structure-function analysis of two variants of mumps virus hemagglutinin-neuraminidase protein. Braz J Infect Dis 2009; 13:24-34. [PMID: 19578626 DOI: 10.1590/s1413-86702009000100007] [Citation(s) in RCA: 14] [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] [Received: 07/16/2008] [Accepted: 12/05/2008] [Indexed: 11/21/2022] Open
Abstract
A point mutation from guanine (G) to adenine (A) at nucleotide position 1081 in the hemagglutinin-neuraminidase (HN) gene has been associated with neurovirulence of Urabe AM9 mumps virus vaccine. This mutation corresponds to a glutamic acid (E) to lysine (K) change at position 335 in the HN glycoprotein. We have experimentally demonstrated that two variants of Urabe AM9 strain (HN-A1081 and HN-G1081) differ in neurotropism, sialic acidbinding affinity and neuraminidase activity. In the present study, we performed a structure-function analysis of that amino acid substitution; the structures of HN protein of both Urabe AM9 strain variants were predicted. Based on our analysis, the E/K mutation changes the protein surface properties and to a lesser extent their conformations, which in turn reflects in activity changes. Our modeling results suggest that this E/K interchange does not affect the structure of the sialic acid binding motif; however, the electrostatic surface differs drastically due to an exposed short alpha helix. Consequently, this mutation may affect the accessibility of HN to substrates and membrane receptors of the host cells. Our findings appear to explain the observed differences in neurotropism of these vaccine strains.
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Affiliation(s)
- Gerardo Santos-López
- Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Metepec, Puebla, México.
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Borraz-Argüello MDT, Santos-López G, Vallejo-Ruiz V, Herrera-Camacho I, Reyes-Leyva J. [Biological characterization of three natural isolates of the porcine rubulavirus (Mexico)]. REV BIOL TROP 2008; 56:487-499. [PMID: 19256422] [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] [Indexed: 05/27/2023] Open
Abstract
Biological characterization of three natural isolates of the porcine rubulavirus (Mexico). Porcine rubulavirus (PoRV) produces a neurological and reproductive syndrome in pigs called the blue-eye disease, known only from Mexico. Several isolates were grouped by the main symptoms presented during outbreaks: a) neurotropic in piglets, (b) broadly neurotropic in piglets and gonadotropic in adults, and (c) gonadotropic in adults. We studied some biological properties of three strains, which fall in one of each virus group: La Piedad Michoacán (LPM) and Producci6n Animal Cerdos 1 (PAC1) and 3 (PAC3), respectively. The analyzed viral properties are mainly related with the trans-membrane hemagglutinin-neuraminidase (HN) and fusion (F) proteins, such as cytopathic effect, hemolysis, hemagglutinating (HA) and neuraminidase (NA) activities. In the infection assays PAC1 strain presented the highest fusogenicity level; however, the most cytolytic strain was PAC3. In addition, HA and NA activities and viral genome of PAC3 strain was detected in supernatants during cell infection earlier than in the other two strains, which shows that PAC3 virions release from the host cell earlier than LPM and PAC1. Experimental determination in purified viruses shows that PAC3 presented a higher HA and NA activities; however, PAC1 shows other interesting properties, such as a high thermostability of HN and differences about substrate profile respect to LPM and PAC3. Our data suggest that NA activity is associated with the virulence of RVP.
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Affiliation(s)
- María del Tránsito Borraz-Argüello
- Laboratorio de Biología Molecular y Virologia, Centro de Investigación Biomédica de Oriente, IMSS, HGZ No. 5, Km. 4.5 Carretera Federal Atlixco-Metepec, 74630 Metepec, Puebla, México.
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Herrera-Camacho I, Rosas-Murrieta NH, Rojo-Domínguez A, Millán L, Reyes-Leyva J, Santos-López G, Suárez-Rendueles P. Biochemical characterization and structural prediction of a novel cytosolic leucyl aminopeptidase of the M17 family from Schizosaccharomyces pombe. FEBS J 2008; 274:6228-40. [PMID: 18028193 DOI: 10.1111/j.1742-4658.2007.06142.x] [Citation(s) in RCA: 15] [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: 11/27/2022]
Abstract
A new leucyl aminopeptidase activity has been identified in the fission yeast Schizosaccharomyces pombe. The enzyme, which has been purified and named leucyl aminopeptidase yspII (LAP yspII), had a molecular mass of 320 and 54 kDa by gel filtration and SDS/PAGE, respectively, suggesting a homohexameric structure. The enzyme cleaved synthetic aminoacyl-4-nitroanilides at an optimum of pH 8.5, and preferred leucine and methionine as N-terminal amino acids. A clear dependence on Mn2+ concentration for activity was found, and an apparent association constant of 0.33 mM was calculated for the metal ion. Bestatin behaved as a competitive inhibitor of LAP yspII (K(i) = 0.14 microM), while chelating agents such as chloroquine, EDTA and 1,10-phenanthroline also reduced enzyme activity. A MALDI-MS analysis, followed by sequencing of two of the resulting peptides, showed that LAP yspII undoubtedly corresponds to the putative aminopeptidase C13A11.05 identified in the S. pombe genome project. The protein exhibited nearly 40% sequence identity to fungal and mammalian aminopeptidases belonging to the M17 family of metallopeptidases. Catalytic residues (Lys292 and Arg366), as well as those involved in coordination with the cocatalytic metal ions (Lys280, Asp285, Asp303, Asp362 and Glu364) and those forming the hydrophobic pocket for substrate binding (Met300, Asn360, Ala363, Thr390, Leu391, Ala483 and Met486), were perfectly conserved among all known aminopeptidases. The S. pombe enzyme is predicted to be formed two clearly distinguished domains with a well conserved C-terminal catalytic domain showing a characteristic topology of eight beta-sheets surrounded by alpha-helical segments in the form of a saddle.
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Affiliation(s)
- Irma Herrera-Camacho
- Laboratorio de Bioquímica y Biología Molecular, Centro de Química del Instituto de Ciencias, Universidad Autónoma de Puebla, Puebla, Mexico.
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Rosas-Murrieta N, Herrera-Camacho I, Vallejo-Ruiz V, Millán-Pérez-Peña L, Cruz C, Tapia-Ramírez J, Santos-López G, Reyes-Leyva J. Differential sensitivity to interferon influences the replication and transcription of Urabe AM9 mumps virus variants in nerve cells. Microbes Infect 2007; 9:864-72. [PMID: 17533145 DOI: 10.1016/j.micinf.2007.03.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 11/19/2006] [Revised: 02/23/2007] [Accepted: 03/08/2007] [Indexed: 10/23/2022]
Abstract
Urabe AM9 mumps virus vaccine causes post-vaccination meningitis. Two variants of Urabe AM9 virus differ in their replication efficiency in human nerve cells, HN-A(1081) variant being more neurotropic than HN-G(1081). The effect of interferon (IFN) on viral replication and transcription was analyzed. Priming of nerve cells with IFN reduced more significantly the replication of HN-G(1081) variant (from 10(2.5) to 10(1.3) TCID(50)) than that of HN-A(1081) (from 10(3.5) to 10(2.6) TCID(50)). IFN-priming also reduced the transcription of HN-G(1081) genes, but not of HN-A(1081). The effect of viral infection on the transcription of cellular IFN responsive genes was analyzed. HN-A(1081) virus reduced the transcription of STAT1, STAT2, p48 and MxA in both unprimed and IFN-primed cells; whereas HN-G(1081) virus just reduced MxA transcription. Since rubulavirus V protein inhibits IFN signaling, the V mRNA was cloned and sequenced, finding that HN-G(1081) but not HN-A(1081) presented three extra G in the P/V edition site, producing the insertion of Gly156 in the V protein. Our results suggest that the replication efficiency of Urabe AM9 mumps virus variants is influenced by their sensitivity to interferon and their capacity to reduce the antiviral response.
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Affiliation(s)
- Nora Rosas-Murrieta
- Lab. de Virología y Biología Molecular, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, Hospital General de Zona No. 5, Km. 4.5 Carretera Atlixco-Metepec, 74360 Metepec, Pue., Mexico
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Santos-López G, Flores E, Baños R, Herrera-Camacho I, Reyes-Leyva J. Purification of the Porcine rubulavirus attachment protein by liquid isoelectric focusing. Protein Expr Purif 2004; 35:120-5. [PMID: 15039074 DOI: 10.1016/j.pep.2003.12.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 11/10/2003] [Revised: 12/17/2003] [Indexed: 11/18/2022]
Abstract
Porcine rubulavirus (PoRV) is an emerging virus responsible for meningoencephalitis, respiratory distress, and reproductive alterations in pigs. The hemagglutinin-neuraminidase (HN) glycoprotein is the most exposed and antigenic of the virus proteins. HN plays central roles in PoRV infection; i.e., it recognizes sialic acid-containing cell receptors that mediate virus attachment and penetration; in addition, its neuraminidase (sialic acid hydrolysis) activity has been proposed to be a virulence factor. So, HN is an ideal target for therapeutic treatment and prevention of this viral infection. This work describes a simple, fast, and sensitive method to purify the active form of HN protein based on its isoelectric point. HN was purified at a pH of 4.4, at which a single protein band of 66 kDa was observed on SDS-PAGE. Pure HN showed a maximal enzymatic activity at pH 3.5 and 37 degrees C using bovine fetuin as substrate. However, it retains circa 80% of its activity at a wide temperature range from 30 to 55 degrees C. We also describe improvements of neuraminidase determination method, which permits analysis in a microplate spectrophotometer, thereby increasing the sensitivity and reducing the costs of valuable reagents and biological samples.
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Affiliation(s)
- Gerardo Santos-López
- Laboratorio de Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social, 74360 Metepec Puebla, Mexico.
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Abstract
Saccharomyces cerevisiae aminopeptidase yscCo-II (APCo-II) was purified to apparent homogeneity by gel filtration, affinity chromatography and anion-exchange chromatography. APCo-II is an hexameric cobalt-dependent metallo-enzyme with an estimated native molecular mass of 290 kDa. Enzyme activity is only detected in the presence of cobalt ions at pH 7.0. Substrate specificity studies indicate that aminopeptidase yscCo-II cleaves only basic N-terminal residues. PMSF, Cu(2+), 1,10-phenanthroline and bestatin were found to be very strong inhibitors of aminopeptidase yscCo-II activity. Kinetic studies indicated that the enzyme has a similar K(m) and Ka(Co )(activation constant of cobalt) and, following extraction of cobalt from the enzyme, activity was recovered only after cobalt addition.
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Affiliation(s)
- I Herrera-Camacho
- Area de Bioquímica, Centro de Química del Instituto de Ciencias, Universidad Autónoma de Puebla, 72000 Puebla, México.
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Abstract
The steady-state levels of the aminopeptidase Y (APY1) transcript and the level of assayable aminopeptidase Y activity were measured under a variety of nutritional conditions. Specific APY1 mRNA is less abundant in cells grown in minimal medium than in cells grown in rich medium, while active enzyme levels follow just the opposite pattern. Aminopeptidase Y activity decreases when cells are deprived of glucose without a concomitant fall in mRNA levels. Production of aminopeptidase Y is not markedly affected by nitrogen regulation. APY1 gene expression is not disturbed in heat-shocked cells. Our data support the idea that the main control event in vacuolar aminopeptidase Y expression is a post-transcriptional step.
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Affiliation(s)
- I Herrera-Camacho
- Departamento de Bioquímica y Biología Molecular, Universidad de Oviedo, Spain
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