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Investigación

Water-borne and Food-borne Bacterial Diseases

Líneas de investigación

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Legionella

Desde su creación hasta la actualidad, La Unidad de Legionella tiene como principal función dar apoyo científico-técnico a la Administración General del Estado, a las Comunidades Autónomas y al Sistema Nacional de Salud en el campo de la prevención y control de la legionelosis, así como llevar a cabo investigaciones científicas en el contexto de la legionelosis. Además, la Unidad de Legionella también actúa como Laboratorio de Referencia de España frente al European Centre for Disease Prevention and Control (ECDC), siendo miembro de la red europea de vigilancia de la legionelosis, “European Legionnaires’ Disease Surveillance Network (ELDSNet). Finalmente, la unidad también realiza una actividad docente, participando en cursos de formación especializada, así como en Máster Universitarios.

 

Principales líneas de investigación

Vigilancia microbiológica

Búsqueda de marcadores moleculares con capacidad de predecir el riesgo de una instalación de provocar legionelosis. Factores de virulencia de Legionella spp.

Estudio de la capacidad formadora de biofilms de Legionella spp. Colonización y dispersión.

Búsqueda de marcadores fenotípicos capaces de discriminar especies del Género Legionella; grupos y subgrupos de Legionella pneumophila.

Diferentes estructuras de biofilms en función de la cepa formadora de Legionella pneumophila. En verde la biomasa bacteriana, en rojo el exopolisacárido de la matriz extracelular.

Apoyo al Sistema Nacional de Salud de la Unidad de Legionella

 

La Unidad de Legionella tambien desarrolla actividades con el fin de proporcionar asistencia al sistema nacional de salud a traves de la oferta disponible en la cartera de servicios del CNM, así como a través de programas de vigilancia microbiológica.

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Publicaciones destacadas

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High-Quality Draft Genome of Babesia divergens, the Etiological Agent of Cattle and Human Babesiosis.

8. Cuesta I; González LM; Estrada K; Grande R; Zaballos A; Lobo CA; Barrera J; Sanchez-Flores A; Montero E. 2014. High-Quality Draft Genome of Babesia divergens, the Etiological Agent of Cattle and Human Babesiosis. Genome Announcement. 2: e01194-14.

PUBMED DOI

Co-occurrence of the cephalosporinase cepA and carbapenemase cfiA genes in a Bacteroides fragilis division II strain, an unexpected finding

Valdezate S, Medina-Pascual MJ, Villalón P, Garrido N, Monzón S, Cuesta I, Cobo F (2024). Co-occurrence of the cephalosporinase cepA and carbapenemase cfiA genes in a Bacteroides fragilis division II strain, an unexpected finding. J Antimicrobial Chem. 2024 Jul 1;79(7):1683-1687

PUBMED DOI

Hookworm secreted extracellular vesicles interact with host cells and prevent inducible colitis in mice.

Eichenberger RM, Ryan S, Jones L, Buitrago G, Polster R, Montes de Oca M, Zuvelek J, Giacomin PR, Dent LA, Engwerda CR, Field MA, Sotillo J, Loukas A. Hookworm secreted extracellular vesicles interact with host cells and prevent inducible colitis in mice. Front Immunol. 2018 Apr 30;9:850.

PUBMED DOI

T-Cell-Specific Loss of the PI-3-Kinase p110α Catalytic Subunit Results in Enhanced Cytokine Production and Antitumor Response.

1. Aragoneses-Fenoll L, Ojeda G, Montes-Casado M, Acosta-Ampudia Y, Dianzani U, Portolés P, Rojo JM. T-Cell-Specific Loss of the PI-3-Kinase p110α Catalytic Subunit Results in Enhanced Cytokine Production and Antitumor Response. Front. Immunol. 2018 Feb 27;9:332.

PUBMED DOI

Pneumoviridae fusion proteins as immunogens to induce cross-neutralizing antibody responses

Olmedillas E, Cano O, Martinez I, Luque D, Terron MC, McLellan JS, et al. Chimeric Pneumoviridae fusion proteins as immunogens to induce cross-neutralizing antibody responses. EMBO Mol Med. 2018;10(2):175-87.

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Toll-like receptor signaling-deficient cells enhance antitumor activity of cell-based immunotherapy by increasing tumor homing

A. Morales-Molina, M.A. Rodríguez-Milla, S,. Gambera, T. Cejalvo, B. de Andrés M.L. Gaspar, J. Garcia-Castro. Cancer Res Commun 2023 Mar 1;3(3):347-360. eCollection 2023 Mar

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StaR Is a positive regulator of topoisomerase I activity involved in supercoiling maintenance in Streptococcus pneumoniae

de Vasconcelos Junior AA, Tirado-Vélez JM, Martín-Galiano AJ, Megias D, Ferrándiz MJ, Hernández P, Amblar M, de la Campa AG. Int J Mol Sci. 2023; 24:5973.

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Antiretroviral Therapy with Ritonavir-Boosted Atazanavir- and Lopinavir-Containing Regimens Correlates with Diminished HIV-1 Neutralization.

Yuste E, Gil H, Garcia F, Sanchez-Merino V; Vaccines (Basel). 2024 Oct 17;12(10):1176.

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Toward the consensus of definitions for the phenomena of antifungal tolerance and persistence in filamentous fungi.

Amich J, Bromley M, Goldman GH, Valero C. mBio. 2025 Feb 25:e0347524

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Structure and Immunogenicity of the Human Metapneumovirus F Protein in the Postfusion Conformation.

5. Mas V, Rodriguez L, Olmedillas E, Cano O, Palomo C, Terron MC, et al. Engineering, Structure and Immunogenicity of the Human Metapneumovirus F Protein in the Postfusion Conformation. PLoS Pathog. 2016;12(9):e1005859.

PUBMED DOI

Godet C, Alastruey-Izquierdo A, Flick H, Hennequin C, Mikilps-Mikgelbs R, Munteanu O, Page I, Seidel D, Salzer HJF. A CPAnet consensus statement on research priorities for chronic pulmonary aspergillosis: a neglected fungal infection that requires attention. J Antimicrob Chemother. 2018 ​

Godet C, Alastruey-Izquierdo A, Flick H, Hennequin C, Mikilps-Mikgelbs R, Munteanu O, Page I, Seidel D, Salzer HJF. A CPAnet consensus statement on research priorities for chronic pulmonary aspergillosis: a neglected fungal infection that requires attention. J Antimicrob Chemother. 2018 Feb 1;73(2):280-286. doi: 10.1093/jac/dkx390. PMID: 29126309.​

PUBMED DOI

Ultrastructure of the Babesia divergens free merozoite

Terrón M.C, González-Camacho F., González L.M., Luque D.*, Montero E. 2016. Ultrastructure of the Babesia divergens free merozoite. Ticks Tick Borne Diseases. 7(6):1274-1279. *Corresponding author. IF: 3.23, Q1.

PUBMED DOI

Exploring the genetic background of the botulism neurotoxin BoNT/B2 in Spain

Valdezate S, Carrasco G, Medina MJ, Garrido N, Del Pino S, Valiente M, Pallarés MP, Villalon P. (2023). Exploring the genetic background of the botulism neurotoxin BoNT/B2 in Spain. Microbiol Spectr. Sep 26;11(5):e0238023

PUBMED DOI

HDP2: a ribosomal DNA (NTS-ETS) sequence as a target for species-specific molecular diagnosis of intestinal taeniasis in humans.

Flores MD, Gonzalez LM, Hurtado C, Motta YM, Domínguez-Hidalgo C, Merino FJ, Perteguer MJ, Gárate T. HDP2: a ribosomal DNA (NTS-ETS) sequence as a target for species-specific molecular diagnosis of intestinal taeniasis in humans. Parasit Vectors. 2018 Feb 27;11(1):117. doi: 10.1186/s13071-018-2646-6.

PUBMED DOI

ETP-46321, a dual p110α/δ class IA phosphoinositide 3-kinase inhibitor modulates T lymphocyte activation and collagen-induced arthritis.

2. Aragoneses-Fenoll L, Montes-CasadoM, Ojeda G, Acosta YY, Herranz J, Martínez S, Blanco-Aparicio C, Criado G, Pastor J, Dianzani U, Portolés P, Rojo JM. ETP-46321, a dual p110α/δ class IA phosphoinositide 3-kinase inhibitor modulates T lymphocyte activation and collagen-induced arthritis. Biochem. Pharmacol. 2016 Apr 15;106:56-69. Epub 2016 Feb 13.

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Immune stress suppresses innate immune signaling in preleukemic precursor B-cells to provoke leukemia in predisposed mice

Isidro-Hernández M, Casado-García A, Oak N, Alemán-Arteaga S, Ruiz-Corzo B, Martínez-Cano J, Mayado A, G. Sánchez E, Blanco O, Gaspar ML, Orfao A, Alonso-López D, De las Rivas J, Riesco S, Prieto-Matos P, González-Murilo A, García Criado FJ, García Cenador MB, Ramírez-Orellana M, De Andrés B, Vicente-Dueñas C, Cobaleda C, Nichols KE, Sánchez-García I. Nat Commun 2023 Aug 24;14(1):5159.

PUBMED DOI

The balance between gyrase and topoisomerase I activities determines levels of supercoiling, nucleoid compaction, and viability in bacteria

García-López M, Megias D, Ferrándiz MJ, de la Campa AG. Front Microbiol. 2023; 11;1094692.

PUBMED DOI

The Association of HIV-1 Neutralization in Aviremic Children and Adults with Time to ART Initiation and CD4+/CD8+ Ratios

Sanchez-Merino V, Martin-Serrano M, Beltran M, Lazaro-Martin B, Cervantes E, Oltra M, Sainz T, Garcia F, Navarro ML, Yuste E; Vaccines (Basel). 2023 Dec 20;12(1):8;

PUBMED DOI

The sulfur-related metabolic status of Aspergillus fumigatus during infection reveals cytosolic serine hydroxymethyltransferase as a promising antifungal target

Alharthi R, Sueiro-Olivares M, Storer I, Bin Shuraym H, Scott J, Al-Shidhani R, Fortune-Grant R, Bignell E, Tabernero L, Bromley M and Amich J. 2025. Virulence, 16(1):2449075

PUBMED DOI

Horizontal gene transmission of the cfr gene to MRSA and Enterococcus: role of Staphylococcus epidermidis as a reservoir and alternative pathway for the spread of linezolid resistance.

Horizontal gene transmission of the cfr gene to MRSA and Enterococcus: role of Staphylococcus epidermidis as a reservoir and alternative pathway for the spread of linezolid resistance. Cafini F, Nguyen le TT, Higashide M, Román F, Prieto J, Morikawa K. J Antimicrob Chemother. 2016 Mar;71(3):587-92.

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List of staff

Información adicional

The Reference and Research Laboratory for Water-borne an Food-borne Bacterial Diseases (LRIEBTAA) is recognized as a national reference laboratory for the zoonotic agents Salmonella, verotoxigenic Escherichia coli, Yersinia., Campylobacter. and Vibrio (RD 1940/2004 of September 27, Order APA/1808/2007 of June 13). In this sense, its main activity is to ensure adequate surveillance of these zoonoses, zoonotic agents and associated antibiotic resistance, as well as proper investigation of outbreaks caused by these microorganisms. In addition, the LRIEBTAA acts as a reference laboratory for Shigella, other diarrheagenic groups of E. coli, Legionella and toxigenic Corynebacterium species. Added to its reference activity is its applied research activity, among which those mentioned above stand out. 

The members of the group carry out an important training activity. Every year, 3-5 students who develop their final Master's or Degree projects, laboratory technicians in training and rotating students of the specialty of Clinical Microbiology from different national origins are welcomed in the laboratory. In addition, it actively participates in the Public Health microbiologist training program funded by the ECDC through its supervision at the national level and coordination/supervision at the international level.

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