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Franco-Juárez EX, González-Villasana V, Camacho-Moll ME, Rendón-Garlant L, Ramírez-Flores PN, Silva-Ramírez B, Peñuelas-Urquides K, Cabello-Ruiz ED, Castorena-Torres F, Bermúdez de León M. Mechanistic Insights about Sorafenib-, Valproic Acid- and Metformin-Induced Cell Death in Hepatocellular Carcinoma. Int J Mol Sci 2024; 25:1760. [PMID: 38339037 PMCID: PMC10855535 DOI: 10.3390/ijms25031760] [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: 10/09/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 02/12/2024] Open
Abstract
Hepatocellular carcinoma (HCC) is among the main causes of death by cancer worldwide, representing about 80-90% of all liver cancers. Treatments available for advanced HCC include atezolizumab, bevacizumab, sorafenib, among others. Atezolizumab and bevacizumab are immunological options recently incorporated into first-line treatments, along with sorafenib, for which great treatment achievements have been reached. However, sorafenib resistance is developed in most patients, and therapeutical combinations targeting cancer hallmark mechanisms and intracellular signaling have been proposed. In this review, we compiled evidence of the mechanisms of cell death caused by sorafenib administered alone or in combination with valproic acid and metformin and discussed them from a molecular perspective.
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Affiliation(s)
- Edgar Xchel Franco-Juárez
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey 64720, Nuevo Leon, Mexico; (E.X.F.-J.); (M.E.C.-M.); (P.N.R.-F.); (K.P.-U.)
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66451, Nuevo Leon, Mexico; (V.G.-V.); (L.R.-G.); (E.D.C.-R.)
| | - Vianey González-Villasana
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66451, Nuevo Leon, Mexico; (V.G.-V.); (L.R.-G.); (E.D.C.-R.)
| | - María Elena Camacho-Moll
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey 64720, Nuevo Leon, Mexico; (E.X.F.-J.); (M.E.C.-M.); (P.N.R.-F.); (K.P.-U.)
| | - Luisa Rendón-Garlant
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66451, Nuevo Leon, Mexico; (V.G.-V.); (L.R.-G.); (E.D.C.-R.)
| | - Patricia Nefertari Ramírez-Flores
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey 64720, Nuevo Leon, Mexico; (E.X.F.-J.); (M.E.C.-M.); (P.N.R.-F.); (K.P.-U.)
- Tecnológico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey 64710, Nuevo Leon, Mexico;
| | - Beatriz Silva-Ramírez
- Departamento de Inmunogenética, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey 64720, Nuevo Leon, Mexico;
| | - Katia Peñuelas-Urquides
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey 64720, Nuevo Leon, Mexico; (E.X.F.-J.); (M.E.C.-M.); (P.N.R.-F.); (K.P.-U.)
| | - Ethel Daniela Cabello-Ruiz
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66451, Nuevo Leon, Mexico; (V.G.-V.); (L.R.-G.); (E.D.C.-R.)
| | - Fabiola Castorena-Torres
- Tecnológico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey 64710, Nuevo Leon, Mexico;
| | - Mario Bermúdez de León
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey 64720, Nuevo Leon, Mexico; (E.X.F.-J.); (M.E.C.-M.); (P.N.R.-F.); (K.P.-U.)
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Granados-Tristán AL, Hernández-Luna CE, González-Escalante LA, Camacho-Moll ME, Silva-Ramírez B, Bermúdez de León M, Peñuelas-Urquides K. ESX-3 secretion system in Mycobacterium: An overview. Biochimie 2024; 216:46-55. [PMID: 37879428 DOI: 10.1016/j.biochi.2023.10.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 09/26/2023] [Accepted: 10/22/2023] [Indexed: 10/27/2023]
Abstract
Mycobacteria are microorganisms distributed in the environment worldwide, and some of them, such as Mycobacterium tuberculosis or M. leprae, are pathogenic. The hydrophobic mycobacterial cell envelope has low permeation and bacteria need to export products across their structure. Mycobacteria possess specialized protein secretion systems, such as the Early Secretory Antigenic Target 6 secretion (ESX) system. Five ESX loci have been described in M. tuberculosis, called ESX-1 to ESX-5. The ESX-3 secretion system has been associated with mycobacterial metabolism and growth. The locus of this system is highly conserved across mycobacterial species. Metallo-proteins regulate negative ESX-3 transcription in high conditions of iron and zinc. Moreover, this secretion system is part of an antioxidant regulatory pathway linked to Zinc. EccA3, EccB3, EccC3, EccD3, and EccE3 are components of the ESX-3 secretion machinery, whereas EsxG-EsxH, PE5-PPE4, and PE15-PPE20 are proteins secreted by this system. In addition, EspG3 and MycP3 are complementary proteins involved in transport and proteolysis respectively. This system is associated to mycobacterial virulence by releasing the bacteria from the phagosome and inhibiting endomembrane damage response. Furthermore, components of this system inhibit the host immune response by reducing the recognition of M. tuberculosis-infected cells. The components of the ESX-3 secretion system play a role in drug resistance and cell wall integrity. Moreover, the expression data of this system indicated that external and internal factors affect ESX-3 locus expression. This review provides an overview of new findings on the ESX-3 secretion system, its regulation, expression, and functions.
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Affiliation(s)
- Ana Laura Granados-Tristán
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, 64720, Nuevo León, Mexico; Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, San Nicolás de los Garza, 66455, Nuevo León, Mexico.
| | - Carlos Eduardo Hernández-Luna
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, San Nicolás de los Garza, 66455, Nuevo León, Mexico.
| | - Laura Adiene González-Escalante
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, 64720, Nuevo León, Mexico.
| | - María Elena Camacho-Moll
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, 64720, Nuevo León, Mexico.
| | - Beatriz Silva-Ramírez
- Departamento de Inmunogenética, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, 64720, Nuevo León, Mexico.
| | - Mario Bermúdez de León
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, 64720, Nuevo León, Mexico.
| | - Katia Peñuelas-Urquides
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, 64720, Nuevo León, Mexico.
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Aguirre-Vázquez A, Castorena-Torres F, Silva-Ramírez B, Peñuelas-Urquides K, Camacho-Moll ME, Salazar-Olivo LA, Velasco I, Bermúdez de León M. Cell-type dependent regulation of pluripotency and chromatin remodeling genes by hydralazine. Stem Cell Res Ther 2023; 14:42. [PMID: 36927767 PMCID: PMC10021945 DOI: 10.1186/s13287-023-03268-w] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
BACKGROUND The generation of induced pluripotent stem cells has opened the field of study for stem cell research, disease modeling and drug development. However, the epigenetic signatures present in somatic cells make cell reprogramming still an inefficient process. This epigenetic memory constitutes an obstacle in cellular reprogramming. Here, we report the effect of hydralazine (HYD) and valproic acid (VPA), two small molecules with proven epigenetic activity, on the expression of pluripotency genes in adult (aHF) and neonatal (nbHF) human fibroblasts. METHODS aHF and nbHF were treated with HYD and/or VPA, and viability and gene expression assays for OCT4, NANOG, c-MYC, KLF4, DNMT1, TET3, ARID1A and ARID2 by quantitative PCR were performed. aHF and nbHF were transfected with episomal plasmid bearing Yamanaka factors (OCT4, SOX2, KLF4 and c-MYC) and exposed to HYD and VPA to determine the reprogramming efficiency. Methylation sensitive restriction enzyme (MSRE) qPCR assays were performed on OCT4 and NANOG promoter regions. Immunofluorescence assays were carried out for pluripotency genes on iPSC derived from aHF and nbHF. RESULTS HYD upregulated the expression of OCT4 (2.5-fold) and NANOG (fourfold) genes but not c-Myc or KLF4 in aHF and had no significant effect on the expression of all these genes in nbHF. VPA upregulated the expression of NANOG (twofold) in aHF and c-MYC in nbHF, while it downregulated the expression of NANOG in nbHF. The combination of HYD and VPA canceled the OCT4 and NANOG overexpression induced by HYD in aHF, while it reinforced the effects of VPA on c-Myc expression in nbHF. The HYD-induced overexpression of OCT4 and NANOG in aHDF was not dependent on demethylation of gene promoters, and no changes in the reprogramming efficiency were observed in both cell populations despite the downregulation of epigenetic genes DNMT1, ARID1A, and ARID2 in nbHF. CONCLUSIONS Our data provide evidence that HYD regulates the expression of OCT4 and NANOG pluripotency genes as well as ARID1A and ARID2 genes, two members of the SWI/SNF chromatin remodeling complex family, in normal human dermal fibroblasts.
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Affiliation(s)
- Alain Aguirre-Vázquez
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720, Monterrey, Nuevo León, Mexico.,Depto. de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, 78216, San Luis Potosí, S.L.P., Mexico
| | | | - Beatriz Silva-Ramírez
- Departamento de Inmunogenética, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720, Monterrey, Nuevo León, Mexico
| | - Katia Peñuelas-Urquides
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720, Monterrey, Nuevo León, Mexico
| | - María Elena Camacho-Moll
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720, Monterrey, Nuevo León, Mexico
| | - Luis A Salazar-Olivo
- Depto. de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, 78216, San Luis Potosí, S.L.P., Mexico
| | - Iván Velasco
- Instituto de Fisiología Celular-Neurociencias, Universidad Nacional Autónoma de México, 04510, Mexico City, Mexico.,Laboratorio de Reprogramación Celular, Instituto Nacional de Neurología y Neurocirugía "Manuel Velasco Suárez", 14269, Mexico City, Mexico
| | - Mario Bermúdez de León
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720, Monterrey, Nuevo León, Mexico.
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Peñuelas-Urquides K, Bermúdez de León M, Silva-Ramírez B, Castorena-Torres F, Molina-Salinas GM, Castro-Garza J, Becerril-Montes P, Del Olmo E, San Feliciano A, González-Escalante LA, Villarreal-Treviño L, Said-Fernández S. Two New Dihydrosphingosine Analogs Against Mycobacterium tuberculosis Affect gltA1, lprQ, and rpsO Expression. Front Microbiol 2021; 12:742867. [PMID: 34803964 PMCID: PMC8595602 DOI: 10.3389/fmicb.2021.742867] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 10/12/2021] [Indexed: 11/24/2022] Open
Abstract
The emergence of multidrug-resistant (MDR) Mycobacterium tuberculosis strains threaten the control of tuberculosis. New antitubercular dihydrosphingosine analogs, named UCIs, have been evaluated in preclinical studies but their cellular and molecular mechanisms of action against M. tuberculosis are still unknown. The aim of this study was to evaluate the effect of UCI exposure on gene expression of drug-sensitive H37Rv and MDR CIBIN:UMF:15:99 clones of M. tuberculosis which were isolated, phenotypically, and genetically characterized, cultured to log phase and treated with UCI compounds; followed by total RNA isolation, reverse transcription and hybridization assays on Affymetrix genomic microarrays. Data were validated with RT-qPCR assays. As results, UCI-05 and UCI-14 exposure increased gltA1 expression in drug-sensitive H37Rv clones. Furthermore, UCI-05 increased lprQ expression in MDR CIBIN:UMF:15:99 M. tuberculosis clones while UCI-14 reduced the expression of this gene in drug-sensitive H37Rv clones. In addition, UCI-05 reduced rpsO expression in drug-sensitive H37Rv clones. We found gene expression alterations that suggest these molecules may alter carbon and lipid metabolism as well as interfere in the protein-producing machinery in M. tuberculosis.
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Affiliation(s)
- Katia Peñuelas-Urquides
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Mexico.,Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León (UANL), San Nicolás de los Garza, Mexico
| | - Mario Bermúdez de León
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Mexico
| | - Beatriz Silva-Ramírez
- Departamento de Inmunogenética, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Mexico
| | | | - Gloria María Molina-Salinas
- Unidad de Investigación Médica Yucatán, Unidad Médica de Alta Especialidad, Hospital de Especialidades Centro Médico Nacional Ignacio García Téllez, Instituto Mexicano del Seguro Social, Mérida, Mexico
| | - Jorge Castro-Garza
- Laboratorio de Patogénesis Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Mexico
| | - Pola Becerril-Montes
- Departamento de Biología Celular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Mexico
| | - Esther Del Olmo
- Departamento de Ciencias Farmacéuticas, Área de Química Farmacéutica, Facultad de Farmacia, Centro de Enfermedades Tropicales de la Universidad de Salamanca (CIETUS), Instituto de Investigación Biomédica de Salamanca (IBSAL), Universidad de Salamanca, Salamanca, Spain
| | - Arturo San Feliciano
- Departamento de Ciencias Farmacéuticas, Área de Química Farmacéutica, Facultad de Farmacia, Centro de Enfermedades Tropicales de la Universidad de Salamanca (CIETUS), Instituto de Investigación Biomédica de Salamanca (IBSAL), Universidad de Salamanca, Salamanca, Spain
| | - Laura Adiene González-Escalante
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Mexico
| | - Licet Villarreal-Treviño
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León (UANL), San Nicolás de los Garza, Mexico
| | - Salvador Said-Fernández
- Departamento de Bioquímica y Medicina Molecular, Facultad de Medicina, Universidad Autónoma de Nuevo León (UANL), Monterrey, Mexico
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Herrera-Rodulfo A, Carrillo-Tripp M, Laura Yeverino-Gutierrez M, Peñuelas-Urquides K, Adiene González-Escalante L, Bermúdez de León M, Silva-Ramirez B. NAT2 polymorphisms associated with the development of hepatotoxicity after first-line tuberculosis treatment in Mexican patients: From genotype to molecular structure characterization. Clin Chim Acta 2021; 519:153-162. [PMID: 33932406 DOI: 10.1016/j.cca.2021.04.017] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 04/26/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND AIMS To assess the relevance of the slow acetylator phenotype based on NAT2 genotypes, among patients with pulmonary tuberculosis (PTB) that developed hepatotoxicity after first-line tuberculosis treatment in a Northeastern Mexican population. METHODS Ninety one PTB patients were included, 7 of them developed hepatotoxicity. NAT2 SNPs (rs1801279, rs1041983, rs1801280, rs1799929, rs1799930, rs1208, and rs1799931) were genotyped by TaqMan allelic discrimination assay. Statistical analyses were performed using Epi Info statistical software 7.0 and SHEsisPlus for haplotype reconstruction. The NAT2 slow non-synonymous SNP were studied by molecular dynamic analysis (MDA). RESULTS The frequency of the haplotype associated with slow acetylation status for PTB was 58%, and for with hepatotoxicity (PTB-H) represented 42.6%. Three haplotypes, NAT2*5Q, NAT2*5U, NAT2*5Va were exclusively present in seven PTB-H patients, (P = 0.01, P = 0.0006, P = 0.01, respectively). These haplotypes include the combination of two SNPs (I114T + R197Q or I114T + G286E). The effect of the SNPs on protein structure is to disrupt the CoA binding site affecting acetylation activity. CONCLUSION Our study provides insight into slow acetylation NAT2 haplotypes associated with hepatotoxicity after first-line tuberculosis treatment, for first time, in a Mexican population. The molecular mechanism acts at the CoA binding site.
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Affiliation(s)
- Aldo Herrera-Rodulfo
- Laboratorio de la Diversidad Biomolecular, Centro de investigación y de Estudios Avanzados del Instituto Politécnico Nacional Unidad Monterrey, Vía del Conocimiento 201, PIIT, C.P. 66600 Apodaca, Nuevo León, Mexico; Laboratorio de Ingeniería Genética y Genómica, Universidad Autónoma de Nuevo León, Vicente Guerrero s/n, Treviño, C.P. 64570 Monterrey, Nuevo León, Mexico; Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Calle 2 de abril - Jesús Dionisio González, Independencia, C.P. 64720 Monterrey, Nuevo León, Mexico
| | - Mauricio Carrillo-Tripp
- Laboratorio de la Diversidad Biomolecular, Centro de investigación y de Estudios Avanzados del Instituto Politécnico Nacional Unidad Monterrey, Vía del Conocimiento 201, PIIT, C.P. 66600 Apodaca, Nuevo León, Mexico
| | - Myrna Laura Yeverino-Gutierrez
- Laboratorio de Ingeniería Genética y Genómica, Universidad Autónoma de Nuevo León, Vicente Guerrero s/n, Treviño, C.P. 64570 Monterrey, Nuevo León, Mexico
| | - Katia Peñuelas-Urquides
- Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Calle 2 de abril - Jesús Dionisio González, Independencia, C.P. 64720 Monterrey, Nuevo León, Mexico
| | - Laura Adiene González-Escalante
- Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Calle 2 de abril - Jesús Dionisio González, Independencia, C.P. 64720 Monterrey, Nuevo León, Mexico
| | - Mario Bermúdez de León
- Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Calle 2 de abril - Jesús Dionisio González, Independencia, C.P. 64720 Monterrey, Nuevo León, Mexico
| | - Beatriz Silva-Ramirez
- Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Calle 2 de abril - Jesús Dionisio González, Independencia, C.P. 64720 Monterrey, Nuevo León, Mexico.
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6
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Cerda-Armijo C, de León MB, Ruvalcaba-Ortega I, Chablé-Santos J, Canales-Del-Castillo R, Peñuelas-Urquides K, Rivera-Morales LG, Menchaca-Rodríguez G, Camacho-Moll ME, Contreras-Cordero JF, Guzmán-Velasco A, González-Rojas JI. High Prevalence of Avian Influenza Virus Among Wild Waterbirds and Land Birds of Mexico. Avian Dis 2020; 64:135-142. [PMID: 32550613 DOI: 10.1637/0005-2086-64.2.135] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 01/03/2020] [Indexed: 11/05/2022]
Abstract
Aquatic wild birds, especially waterfowl, have been long considered the main reservoirs of the avian influenza A virus; however, recent surveys have found an important prevalence of these viruses among land birds as well. Migration has been suggested as an important factor in the avian influenza virus dissemination. We aimed to estimate the prevalence of influenza A viruses in wild birds (waterbirds and land birds; resident and migratory) in eastern Mexico, where the three main North American migration flyways converge and where there was no previous information on this subject. We detected influenza with reverse transcription coupled with a PCR approach. Of the 534 birds sampled between 2010 and 2012, we detected the influenza A virus in a high proportion of birds (39%). Prevalence was particularly high in land birds (49%) when compared to aquatic birds (26%); there was no difference in overall prevalence between resident (39%) and migratory birds (39%). The high prevalence of the avian influenza virus in land birds was noteworthy in the innermost sampling areas in northern Mexico (Coahuila [82%] and Nuevo Leon [43%]).
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Affiliation(s)
- Claudia Cerda-Armijo
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - Mario Bermúdez de León
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720 Monterrey, Nuevo León, México.,Departamento de Ciencias Básicas, Vicerrectoría de Ciencias de la Salud, Universidad de Monterrey, 66238 San Pedro Garza García, Nuevo León, México
| | - Irene Ruvalcaba-Ortega
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - Juan Chablé-Santos
- Departamento de Zoología, Campus Ciencias Biológicas y Agropecuarias, Universidad Autónoma de Yucatán, 97100 Mérida, Yucatán, México
| | - Ricardo Canales-Del-Castillo
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - Katia Peñuelas-Urquides
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720 Monterrey, Nuevo León, México
| | - Lydia G Rivera-Morales
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - Griselda Menchaca-Rodríguez
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - María Elena Camacho-Moll
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720 Monterrey, Nuevo León, México.,Departamento de Ciencias Básicas, Vicerrectoría de Ciencias de la Salud, Universidad de Monterrey, 66238 San Pedro Garza García, Nuevo León, México
| | - Juan F Contreras-Cordero
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - Antonio Guzmán-Velasco
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México
| | - José Ignacio González-Rojas
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, 66455 San Nicolás de los Garza, Nuevo León, México,
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7
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Arriaga-Guerrero AL, Hernández-Luna CE, Rigal-Leal J, Robles-González RJ, González-Escalante LA, Silva-Ramírez B, Mercado-Hernández R, Vargas-Villarreal J, Bermúdez de León M, Peñuelas-Urquides K. LipF increases rifampicin and streptomycin sensitivity in a Mycobacterium tuberculosis surrogate. BMC Microbiol 2020; 20:132. [PMID: 32450809 PMCID: PMC7249682 DOI: 10.1186/s12866-020-01802-x] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 04/23/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Mortality due to tuberculosis (TB) has increased due to the development of drug resistance, the mechanisms of which have not been fully elucidated. Our research group identified a low expression of lipF gene in Mycobacterium tuberculosis clinical isolates with drug resistance. The aim of this work was to evaluate the effect of lipase F (LipF) expression on mycobacterial drug resistance. RESULTS The effects of expressing lipF from Mycobacterium tuberculosis in Mycobacterium smegmatis on resistance to antituberculosis drugs were determined with resazurin microtiter assay plate and growth kinetics. Functionality of ectopic LipF was confirmed. LipF expression reduced the rifampicin (RIF) and streptomycin (STR) minimum inhibitory concentration (MIC) from 3.12 μg/mL to 1.6 μg/mL and 0.25 μg/mL to 0.06 μg/mL respectively, moreover a reduced M. smegmatis growth in presence of RIF and STR compared with that of a control strain without LipF expression (p < 0.05 and p < 0.01) was shown. CONCLUSIONS LipF expression was associated with increased RIF and STR sensitivity in mycobacteria. Reduced LipF expression may contribute to the development of RIF and STR resistance in Mycobacterium species. Our findings provide information pertinent to understanding mycobacterial drug resistance mechanisms.
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Affiliation(s)
- Ana Leticia Arriaga-Guerrero
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León, México
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, México
| | - Carlos E Hernández-Luna
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, México
| | - Joyce Rigal-Leal
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, México
| | - Rene J Robles-González
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, México
| | - Laura Adiene González-Escalante
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León, México
| | - Beatriz Silva-Ramírez
- Departamento de Inmunogenética, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León, México
| | - Roberto Mercado-Hernández
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Nuevo León, México
| | - Javier Vargas-Villarreal
- Departamento de Biología Celular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León, México
| | - Mario Bermúdez de León
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León, México
| | - Katia Peñuelas-Urquides
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León, México.
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8
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Granados-Tristán AL, Borrego-Loya A, González-Escalante LA, Esquivel-Lucio GJ, Márquez-Uribe DY, Rigal-Leal J, Robles-González RJ, Arriaga-Guerrero AL, Silva-Ramírez B, Hernández-Luna CE, Contreras-Cordero JF, Villarreal-Treviño L, Mercado Hernández R, Bermúdez De León M, Peñuelas-Urquides K. Role of esxG and esxH Genes in Drug-Resistant Mycobacterium. Microb Drug Resist 2020; 26:1279-1290. [PMID: 32379526 DOI: 10.1089/mdr.2019.0391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Tuberculosis drug resistance (DR) is a global problem that is not fully elucidated. Previously, overexpression of esxG and esxH genes was reported in a multidrug-resistant (MDR) Mycobacterium tuberculosis isolate compared with a reference H37Rv strain. To evaluate the roles of esxG and esxH in DR, analysis of their regulatory and coding sequences in sensitive and resistant strains was performed, and the expression levels of their transcriptional regulators IdeR, Zur, and MntR were evaluated. esxG and esxH were expressed heterologously using mycobacterial constructs, and the orthologs Msmeg_0620 and Msmeg_0621 were attenuated in Mycobacterium smegmatis by antisense knockdown. We found no differences in the regulatory and coding sequences of esxG and esxH between the sensitive strain and the MDR isolate. Expression analysis of transcriptional regulators showed that ideR was upregulated in isoniazid (INH)-resistant isolates; in addition, growth inhibition of the M. smegmatis strain was observed in the presence of rifampicin (RIF) and INH when esxG and esxH were expressed heterologously, while faster growth in the presence of RIF was observed when the orthologs were attenuated. In conclusion, the expression of esxG and esxH altered the growth of Mycobacterium in the presence of INH and RIF, suggesting a potential association with DR.
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Affiliation(s)
- Ana Laura Granados-Tristán
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, México.,Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
| | - Alejandra Borrego-Loya
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, México.,Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
| | - Laura Adiene González-Escalante
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, México
| | - Gladis Janeth Esquivel-Lucio
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, México.,Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
| | - Dulce Yesenia Márquez-Uribe
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, México.,Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
| | - Joyce Rigal-Leal
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, México.,Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
| | - Rene J Robles-González
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
| | - Ana Leticia Arriaga-Guerrero
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, México.,Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
| | - Beatriz Silva-Ramírez
- Departamento de Inmunogenética, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, México
| | | | | | - Licet Villarreal-Treviño
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
| | - Roberto Mercado Hernández
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, México
| | - Mario Bermúdez De León
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, México
| | - Katia Peñuelas-Urquides
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, México
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9
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Silva-Ramírez B, Saenz-Saenz CA, Bracho-Vela LA, Peñuelas-Urquides K, Mata-Tijerina V, Escobedo-Guajardo BL, González-Ríos NR, Vázquez-Monsiváis O, León MBD. Association between vitamin D receptor gene polymorphisms and pulmonary tuberculosis in a Mexican population. ACTA ACUST UNITED AC 2019; 66:70-75. [DOI: 10.1016/j.ijtb.2018.04.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 04/09/2018] [Indexed: 01/31/2023]
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10
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Becerril-Esquivel C, Peñuelas-Urquides K, Blancas-Sánchez E, Zapata-Benavides P, Silva-Ramírez B, Chávez-Reyes A, Castorena-Torres F, Cisneros B, Bermúdez de León M. The polyaromatic hydrocarbon β-naphthoflavone alters binding of YY1, Sp1, and Sp3 transcription factors to the Dp71 promoter in hepatic cells. Mol Med Rep 2018; 17:6150-6155. [PMID: 29484433 DOI: 10.3892/mmr.2018.8626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 09/26/2017] [Accepted: 01/19/2018] [Indexed: 11/06/2022] Open
Abstract
The smallest product of the Duchenne muscular dystrophy gene, dystrophin (Dp)71, is ubiquitously expressed in nonmuscle tissues. We previously showed that Dp71 expression in hepatic cells is modulated in part by stimulating factor 1 (Sp1), stimulating protein 3 (Sp3), and yin yang 1 (YY1) transcription factors, and that the polyaromatic hydrocarbon, β-naphthoflavone (β‑NF), downregulates Dp71 expression. The aim of the present study was to determine whether β‑NF represses Dp71 expression by altering mRNA stability or its promoter activity. Reverse transcription‑quantitative polymerase chain reaction was used to measure half‑life mRNA levels in β‑NF‑treated cells exposed to actinomycin D, an inhibitor of transcription, for 0, 4, 8, 12 and 16 h. Transient transfections with a plasmid carrying the Dp71 basal promoter fused to luciferase reporter gene were carried out in control and β‑NF‑treated cells. Electrophoretic mobility shift assays (EMSAs) were performed with labeled probes, corresponding to Dp71 promoter sequences, and nuclear extracts of control and β‑NF‑treated cells. To the best of our knowledge, the results demonstrated for the first time that this negative regulation takes place at the promoter level rather than the mRNA stability level. Interestingly, using EMSAs, β‑NF reduced binding of YY1, Sp1, and Sp3 to the Dp71 promoter. It also suggests that β‑NF may modulate the expression of other genes regulated by these transcription factors. In conclusion, β‑NF represses Dp71 expression in hepatic cells by altering binding of YY1, Sp1, and Sp3 to the Dp71 promoter.
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Affiliation(s)
- Carolina Becerril-Esquivel
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León 64720, México
| | - Katia Peñuelas-Urquides
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León 64720, México
| | - Erik Blancas-Sánchez
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León 64720, México
| | - Pablo Zapata-Benavides
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, San Nicolás de los Garza, Nuevo León 66451, México
| | - Beatriz Silva-Ramírez
- Departamento de Inmunogenética, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León 64720, México
| | - Arturo Chávez-Reyes
- Centro de Investigación y de Estudios Avanzados del IPN Unidad Monterrey, Apodaca, Nuevo León 66600, México
| | | | - Bulmaro Cisneros
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del IPN unidad Zacatenco, Ciudad de México 07360, México
| | - Mario Bermúdez de León
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, Nuevo León 64720, México
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11
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González-Escalante L, Peñuelas-Urquides K, Said-Fernández S, Silva-Ramírez B, Bermúdez de León M. Differential expression of putative drug resistance genes in Mycobacterium tuberculosis clinical isolates. FEMS Microbiol Lett 2015; 362:fnv194. [PMID: 26454220 DOI: 10.1093/femsle/fnv194] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/07/2015] [Indexed: 11/13/2022] Open
Abstract
Understanding drug resistance in Mycobacterium tuberculosis requires an integrated analysis of strain lineages, mutations and gene expression. Previously, we reported the differential expression of esxG, esxH, infA, groES, rpmI, rpsA and lipF genes in a sensitive M. tuberculosis strain and in a multidrug-resistant clinical isolate. Here, we have evaluated the expression of these genes in 24 clinical isolates that belong to different lineages and have different drug resistance profiles. In vitro, growth kinetics analysis showed no difference in the growth of the clinical isolates, and thus drug resistance occurred without a fitness cost. However, a quantitative reverse transcription PCR analysis of gene expression revealed high variability among the clinical isolates, including those with similar drug resistance profiles. Due to the complexity of gene regulation pathways and the wide diversity of M. tuberculosis lineages, the use of gene expression as a molecular signature for drug resistance is not straightforward. Therefore, we recommend that the expression of M. tuberculosis genes be performed individually, and baseline expression levels should be verified among several different clinical isolates, before any further applications of these findings.
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Affiliation(s)
- Laura González-Escalante
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, 64720, Nuevo León, México Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Biológicas, San Nicolás de los Garza, 66451, Nuevo León, México
| | - Katia Peñuelas-Urquides
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, 64720, Nuevo León, México
| | - Salvador Said-Fernández
- Universidad Autónoma de Nuevo León, UANL, Facultad de Medicina, Monterrey, 64460, Nuevo León, México
| | - Beatriz Silva-Ramírez
- Departamento de Inmunogenética, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, 64720, Nuevo León, México
| | - Mario Bermúdez de León
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, 64720, Nuevo León, México
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12
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Peñuelas-Urquides K, Martínez-Rodríguez HG, Enciso-Moreno JA, Molina-Salinas GM, Silva-Ramírez B, Padilla-Rivas GR, Vera-Cabrera L, Torres-de-la-Cruz VM, Martínez-Martínez YB, Ortega-García JL, Garza-Treviño EN, Enciso-Moreno L, Saucedo-Cárdenas O, Becerril-Montes P, Said-Fernández S. Correlations between major risk factors and closely related Mycobacterium tuberculosis isolates grouped by three current genotyping procedures: a population-based study in northeast Mexico. Mem Inst Oswaldo Cruz 2015; 109:814-9. [PMID: 25317710 PMCID: PMC4238775 DOI: 10.1590/0074-0276130550] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 08/06/2014] [Indexed: 12/02/2022] Open
Abstract
The characteristics of tuberculosis (TB) patients related to a chain of recent TB
transmissions were investigated. Mycobacterium tuberculosis (MTB) isolates (120) were
genotyped using the restriction fragment length polymorphism-IS6110 (R), spacer
oligotyping (S) and mycobacterial interspersed repetitive units-variable number of
tandem repeats (M) methods. The MTB isolates were clustered and the clusters were
grouped according to the similarities of their genotypes. Spearman’s rank correlation
coefficients between the groups of MTB isolates with similar genotypes and those
patient characteristics indicating a risk for a pulmonary TB (PTB) chain transmission
were ana- lysed. The isolates showing similar genotypes were distributed as follows:
SMR (5%), SM (12.5%), SR (1.67%), MR (0%), S (46.67%), M (5%) and R (0%). The
remaining 35 cases were orphans. SMR exhibited a significant correlation (p <
0.05) with visits to clinics, municipalities and comorbidities (primarily diabetes
mellitus). S correlated with drug consumption and M with comorbidities. SMR is needed
to identify a social network in metropolitan areas for PTB transmission and S and M
are able to detect risk factors as secondary components of a transmission chain of
TB.
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Affiliation(s)
- Katia Peñuelas-Urquides
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Zacatecas, ZC, México
| | - Herminia Guadalupe Martínez-Rodríguez
- Departamento de Bioquímica y Medicina Molecula, Hospital Universitario, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, NL, México
| | - José Antonio Enciso-Moreno
- Unidad de Investigación Médica de Zacatecas, Instituto Mexicano del Seguro Social, Zacatecas, ZC, México
| | - Gloria María Molina-Salinas
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Zacatecas, ZC, México
| | - Beatriz Silva-Ramírez
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Zacatecas, ZC, México
| | - Gerardo Raymundo Padilla-Rivas
- Departamento de Bioquímica y Medicina Molecula, Hospital Universitario, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, NL, México
| | - Lucio Vera-Cabrera
- Servicio de Dermatología, Hospital Universitario, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, NL, México
| | | | - Yazmin Berenice Martínez-Martínez
- Departamento de Bioquímica y Medicina Molecula, Hospital Universitario, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, NL, México
| | - Jorge Luis Ortega-García
- Departamento de Bioquímica y Medicina Molecula, Hospital Universitario, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, NL, México
| | - Elsa Nancy Garza-Treviño
- Departamento de Bioquímica y Medicina Molecula, Hospital Universitario, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey, NL, México
| | - Leonor Enciso-Moreno
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Zacatecas, ZC, México
| | - Odila Saucedo-Cárdenas
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Zacatecas, ZC, México
| | - Pola Becerril-Montes
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Zacatecas, ZC, México
| | - Salvador Said-Fernández
- División de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Zacatecas, ZC, México
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13
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Bermúdez de León M, Peñuelas-Urquides K, Aguado-Barrera ME, Currás-Tuala MJ, Escobedo-Guajardo BL, González-Ríos RN, Mata-Tijerina VL, Vázquez-Monsiváis OE. In vitro transcribed RNA molecules for the diagnosis of pandemic 2009 influenza A(H1N1) virus by real-time RT-PCR. J Virol Methods 2013; 193:487-91. [DOI: 10.1016/j.jviromet.2013.07.016] [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: 12/14/2012] [Revised: 06/28/2013] [Accepted: 07/10/2013] [Indexed: 11/26/2022]
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14
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Peñuelas-Urquides K, Villarreal-Treviño L, Silva-Ramírez B, Rivadeneyra-Espinoza L, Said-Fernández S, de León MB. Measuring of Mycobacterium tuberculosis growth. A correlation of the optical measurements with colony forming units. Braz J Microbiol 2013; 44:287-9. [PMID: 24159318 PMCID: PMC3804212 DOI: 10.1590/s1517-83822013000100042] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [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: 09/21/2011] [Accepted: 07/02/2012] [Indexed: 11/25/2022] Open
Abstract
The quantification of colony forming units (cfu), turbidity, and optical density at 600 nm (OD600) measurements were used to evaluate Mycobacterium tuberculosis growth. Turbidity and OD600 measurements displayed similar growth curves, while cfu quantification showed a continuous growth curve. We determined the cfu equivalents to McFarland and OD600 units.
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Affiliation(s)
- Katia Peñuelas-Urquides
- Laboratorio de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, NL, México. ; Posgrado en Microbiología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, NL, México
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15
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Peñuelas-Urquides K, González-Escalante L, Villarreal-Treviño L, Silva-Ramírez B, Gutiérrez-Fuentes DJ, Mojica-Espinosa R, Rangel-Escareño C, Uribe-Figueroa L, Molina-Salinas GM, Dávila-Velderrain J, Castorena-Torres F, Bermúdez de León M, Said-Fernández S. Comparison of gene expression profiles between pansensitive and multidrug-resistant strains of Mycobacterium tuberculosis. Curr Microbiol 2013; 67:362-71. [PMID: 23649743 DOI: 10.1007/s00284-013-0376-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 03/28/2013] [Indexed: 11/25/2022]
Abstract
Mycobacterium tuberculosis has developed resistance to anti-tuberculosis first-line drugs. Multidrug-resistant strains complicate the control of tuberculosis and have converted it into a worldwide public health problem. Mutational studies of target genes have tried to envisage the resistance in clinical isolates; however, detection of these mutations in some cases is not sufficient to identify drug resistance, suggesting that other mechanisms are involved. Therefore, the identification of new markers of susceptibility or resistance to first-line drugs could contribute (1) to specifically diagnose the type of M. tuberculosis strain and prescribe an appropriate therapy, and (2) to elucidate the mechanisms of resistance in multidrug-resistant strains. In order to identify specific genes related to resistance in M. tuberculosis, we compared the gene expression profiles between the pansensitive H37Rv strain and a clinical CIBIN:UMF:15:99 multidrug-resistant isolate using microarray analysis. Quantitative real-time PCR confirmed that in the clinical multidrug-resistant isolate, the esxG, esxH, rpsA, esxI, and rpmI genes were upregulated, while the lipF, groES, and narG genes were downregulated. The modified genes could be involved in the mechanisms of resistance to first-line drugs in M. tuberculosis and could contribute to increased efficiency in molecular diagnosis approaches of infections with drug-resistant strains.
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Affiliation(s)
- K Peñuelas-Urquides
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Calle 2 de abril 501, Col. Independencia, 64720, Monterrey, Nuevo León, Mexico
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