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Investigation

Bacterial Genetics

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Content with Investigacion Taxonomía Bacteriana .

Taxonomía Bacteriana

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Research projects

Content with Investigacion Taxonomía Bacteriana .

- Título: Desvelando la genómica de las bacterias anaerobias procedentes de bacteriemias
Referencia Proyecto: PID202-1127477OB-I00-MPY 302/22.
Entidad financiador: Agencia Estatal de Investigación.
Fechas de ejecución: 2023-2026
Financiación 108.900 €.
Investigadora principal: Sylvia Valdezate


 

- Título: Plataformas MALDI-TOF/CMI SENSITITRETM Personal Técnico Apoyo
Referencia: PTA2019-016623-I. 
Entidad Financiadora: Agencia Estatal de Investigación. 
Fechas ejecución 12/2020-11/2023
Investigadora principal: Sylvia Valdezate

- Título: Elementos genéticos móviles protagonistas en la evolución de los serotipos pandémicos M1 y M89 de Streptococcus pyogenes en el síndrome del shock tóxico y otras infecciones invasivas
Referencia: (MPY 377/18).
Entidad financiadora: Instituto de Salud Carlos III. Agencia Estatal de Investigación en Salud Intramural (AESI). 
Fechas de ejecución: 11/2018-12/2022. 
Financiación: 40.000 €.
Investigadoras principales: Pilar Villalón. Co-IP Sylvia Valdezate. 

- Título: Plataformas genéticas y su influencia en la resistencia a co-trimoxazol, macrólidos y tetraciclina en Nocardia spp.
Referencia: MPY 1278/15
Entidad financiadora: Instituto de Salud Carlos III. Agencia Estatal de Investigación en Salud Intramural (AESI).
Fechas de ejecución: 2015-2017.
Financiación: 88.141,8 €. 
Investigadora principal: Sylvia Valdezate

- Título: Filogenia y caracterización de mecanismos moleculares de resistencia en Nocardia spp. 
Referencia: MPY 1446/11
Entidad financiadora: Instituto de Salud Carlos III. Fondo de Investigación Sanitaria (AES). () 
Fechas de ejecución: 04/2012-10/2015
Financiación: 115.457 €. 
Investigadora principal: Sylvia Valdezate.

- Título: Iberian network of laboratories of biological alert. Accreditation of methods for detection highly pathogenic agents (IB-BIOALERTNET). 
Entidad financiadora: COMISIÓN EUROPEA HOME/2012/ISEC/AG/CBRN/4000003810. (Instituto de Salud Carlos III (VISAVET, IVIA, INSA, INIAV))
Referencia: SAFI 1132/13-7. 
Fecha de ejecución: 2013-2015.
Financiación: 699.175 €. 
Tipo de participación: Miembro del equipo investigador.

- Título: EQUATOX Project Establishment of Quality Assurances for theDetection of Biological Toxins of potential Bioterrorism risk. 
Entidad financiadora y convocatoria: Seven Framework Programme for Research FP7-SECURITY. (Robert Koch-Institut Berlin Alemania). 
Referencia: SEC-2011.5.4-1. 
Fechas de ejecución: 2012-2014.

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Genetic Characterization of Brucella spp.: Whole Genome Sequencing-Based Approach for the Determination of Multiple Locus Variable Number Tandem Repeat Profiles

Pelerito A, Nunes A, Grilo T, Isidro J, Silva C, Ferreira AC, Valdezate S, Núncio MS, Georgi E, Gomes JP. (2021) Genetic Characterization of Brucella spp.: Whole Genome Sequencing-Based Approach for the Determination of Multiple Locus Variable Number Tandem Repeat Profiles. 2021. Front Microbiol. 12;12:740068

PUBMED DOI

Saezia sanguinis gen. nov., sp. nov., a Betaproteobacteria member of order Burkholderiales, isolated from human blood

Medina-Pascual MJ, Monzón S, Villalón P, Cuesta I, González-Romo F, Valdezate S. (2020). Saezia sanguinis gen. nov., sp. nov., a Betaproteobacteria member of order Burkholderiales, isolated from human blood. Int J Syst Evol Microbiol.70:2016-25.

PUBMED DOI

Dynamics of a Sporadic Nosocomial Acinetobacter calcoaceticus-Acinetobacter baumannii Complex Population

Villalón P, Ortega M, Sáez-Nieto JA, Carrasco G, Medina-Pascual MJ, Garrido N, Valdezate S. (2019). Dynamics of a Sporadic Nosocomial Acinetobacter calcoaceticus-Acinetobacter baumannii Complex Population. 2019. Front Microbiol. 22;10:593

PUBMED DOI

Epidemiology and susceptibility to antimicrobial agents of the main Nocardia species in Spain.

Valdezate S, Garrido N, Carrasco G, Medina-Pascual MJ, Villalón P, Navarro AM, Saéz-Nieto JA. Epidemiology and susceptibility to antimicrobial agents of the main Nocardia species in Spain. J Antimicrob Chemother. 2017;72(3):754-761.

PUBMED DOI

Content with Investigacion Taxonomía Bacteriana .

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Additional Information

Streptococcus pneumoniae is a human pathogen that, despite the development of vaccines, continues to be an important cause of mortality and morbidity. We investigate the mechanisms of antibiotic resistance in this bacterium. On the one hand by identifying new therapeutic targets and on the other hand by investigating the molecular basis of the action of antibiotics already used in clinical practice (the fluoroquinolones levofloxacin and moxifloxacin) or not yet used (seconeolitsine). For this purpose, we used a multidisciplinary analysis involving genomics, transcriptomics and proteomics to understand the organization of the S. pneumoniae chromosome and the identification of the factors that stabilize this organization, including ncRNAs. Changes in the level of global supercoiling, either by inhibition of gyrase (decrease) or by inhibition of topoisomerase I (increase) alter the transcriptome. The modulated genes are located in domains, whose genes show specific functional characteristics. The aim is to identify new factors essential for S. pneumoniae physiology and to characterize transcriptional regulation in response to topological stress. In addition, RNA interference technology and CRISPR systems will be used as novel antibacterials. These studies will establish the bases for translational research aimed at the development of new therapeutic targets for the treatment of pneumococcal diseases.

Streptococcus pneumoniae is a human pathogen that, despite the development of vaccines, continues to be an important cause of mortality and morbidity. We investigate the mechanisms of antibiotic resistance in this bacterium. On the one hand by identifying new therapeutic targets and on the other hand by investigating the molecular basis of the action of antibiotics already used in clinical practice (the fluoroquinolones levofloxacin and moxifloxacin) or not yet used (seconeolitsine). For this purpose, we used a multidisciplinary analysis involving genomics, transcriptomics and proteomics to understand the organization of the S. pneumoniae chromosome and the identification of the factors that stabilize this organization, including ncRNAs. Changes in the level of global supercoiling, either by inhibition of gyrase (decrease) or by inhibition of topoisomerase I (increase) alter the transcriptome. The modulated genes are located in domains, whose genes show specific functional characteristics. The aim is to identify new factors essential for S. pneumoniae physiology and to characterize transcriptional regulation in response to topological stress. In addition, RNA interference technology and CRISPR systems will be used as novel antibacterials. These studies will establish the bases for translational research aimed at the development of new therapeutic targets for the treatment of pneumococcal diseases.

Content with Investigacion Taxonomía Bacteriana .