Browsing by Subject "Staphylococcus aureus"

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    • Bap, a biofilm matrix protein of Staphylococcus aureus prevents cellular internalization through binding to GP96 host receptor 

      Valle Turrillas, Jaione Upna; Latasa Osta, Cristina Upna; Gil Puig, Carmen Upna; Toledo Arana, Alejandro Upna; Solano Goñi, Cristina Upna; Penadés, José R.; Lasa Uzcudun, Íñigo Upna (Public Library of Science, 2012)   Artículo / Artikulua  OpenAccess
      The biofilm matrix, composed of exopolysaccharides, proteins, nucleic acids and lipids, plays a well-known role as a defence structure, protecting bacteria from the host immune system and antimicrobial therapy. However, ...

    • Bap, a Staphylococcus aureus surface protein involved in biofilm formation 

      Cucarella, Carme; Solano Goñi, Cristina Upna; Valle Turrillas, Jaione Upna; Amorena Zabalza, Beatriz Upna; Lasa Uzcudun, Íñigo Upna; Penadés, José R. (American Society for Microbiology, 2001)   Artículo / Artikulua  OpenAccess
      Identification of new genes involved in biofilm formation is needed to understand the molecular basis of strain variation and the pathogenic mechanisms implicated in chronic staphylococcal infections. A biofilm-producing ...

    • Base pairing interaction between 5′- and 3′-UTRs controls icaR mRNA translation in Staphylococcus aureus 

      Ruiz de los Mozos Aliaga, Igor Upna; Vergara Irigaray, Marta Upna; Segura, Víctor; Villanueva San Martín, Maite Upna; Bitarte, Nerea Upna; Saramago, Margarida; Domingues, Susana; Arraiano, Cecilia M.; Fechter, Pierre; Romby, Pascale; Valle Turrillas, Jaione Upna; Solano Goñi, Cristina Upna; Lasa Uzcudun, Íñigo Upna; Toledo Arana, Alejandro Upna (Public Library of Science, 2013)   Artículo / Artikulua  OpenAccess
      The presence of regulatory sequences in the 39 untranslated region (39-UTR) of eukaryotic mRNAs controlling RNA stability and translation efficiency is widely recognized. In contrast, the relevance of 39-UTRs in bacterial ...

    • Beta-lactam antibiotics induce the SOS response and horizontal transfer of virulence factors in Staphylococcus aureus 

      Maiques, Elisa; Ubeda, Carles; Campoy Sánchez, Susana; Salvador, Noelia; Lasa Uzcudun, Íñigo Upna; Novick, Richard P.; Barbé, Jordi; Penadés, José R. (American Society for Microbiology, 2006)   Artículo / Artikulua  OpenAccess
      Antibiotics that interfere with DNA replication and cell viability activate the SOS response. In Staphylococcus aureus, the antibiotic-induced SOS response promotes replication and high-frequency horizontal transfer ...

    • Biofilm matrix exoproteins induce a protective immune response against Staphylococcus aureus biofilm infection 

      Gil Puig, Carmen Upna; Solano Goñi, Cristina Upna; Burgui Erice, Saioa Upna; Latasa Osta, Cristina Upna; García Martínez, Begoña Upna; Toledo Arana, Alejandro Upna; Lasa Uzcudun, Íñigo Upna; Valle Turrillas, Jaione Upna (American Society for Microbiology, 2014)   Artículo / Artikulua  OpenAccess
      The Staphylococcus aureus biofilm mode of growth is associated with several chronic infections that are very difficult to treat due to the recalcitrant nature of biofilms to clearance by antimicrobials. Accordingly, there ...

    • Calcium inhibits bap-dependent multicellular behavior in Staphylococcus aureus 

      Arrizubieta Balerdi, María Jesús Upna; Toledo Arana, Alejandro Upna; Amorena Zabalza, Beatriz Upna; Penadés, José R.; Lasa Uzcudun, Íñigo Upna (American Society for Microbiology, 2004)   Artículo / Artikulua  OpenAccess
      Bap (biofilm-associated protein) is a 254-kDa staphylococcal surface protein implicated in formation of biofilms by staphylococci isolated from chronic mastitis infections. The presence of potential EF-hand motifs in the ...

    • Evaluation of surface microtopography engineered by direct laser interference for bacterial anti-biofouling 

      Valle Turrillas, Jaione Upna; Burgui Erice, Saioa Upna; Langheinrich, Denise; Gil Puig, Carmen Upna; Solano Goñi, Cristina Upna; Toledo Arana, Alejandro Upna; Helbig, Ralf; Lasagni, Andrés; Lasa Uzcudun, Íñigo Upna (2015)   Artículo / Artikulua  OpenAccess
      Biofilm formation by bacterial pathogens on the surface of medical and industrial settings is a 25 serious health problem. Modification of the biomaterial surface topography is a promising 26 strategy to prevent bacterial ...

    • Expression of the biofilm-associated protein interferes with host protein receptors of Staphylococcus aureus and alters the infective process 

      Cucarella, Carme; Tormo Más, María Ángeles; Knecht, Erwin; Amorena Zabalza, Beatriz Upna; Lasa Uzcudun, Íñigo Upna; Foster, Timothy J.; Penadés, José R. (American Society for Microbiology, 2002)   Artículo / Artikulua  OpenAccess
      The adherence of Staphylococcus aureus to soluble proteins and extracellular-matrix components of the host is one of the key steps in the pathogenesis of staphylococcal infections. S. aureus presents a family of adhesins ...

    • Functional analysis of the RNA chaperone CspA in Staphylococcus aureus 

      Caballero Sánchez, Carlos Upna (2018)   Tesis doctoral / Doktoretza tesia  OpenAccess
      En esta tesis se pone de manifiesto que las chaperonas de RNA, como CspA, pueden interactuar de manera específica con estructuras de RNA, que a su vez pueden ser reconocidas por otras RBPs. Esto contribuye a un mejor ...

    • Killing niche competitors by remote-control bacteriophage induction 

      Selva, Laura; Viana, David; Regev Yochay, Gili; Trzcinski, Krzysztof; Corpa, Juan Manuel; Lasa Uzcudun, Íñigo Upna; Novick, Richard P.; Penadés, José R. (National Academy of Sciences, 2009)   Artículo / Artikulua  OpenAccess
      A surprising example of interspecies competition is the production by certain bacteria of hydrogen peroxide at concentrations that are lethal for others. A case in point is the displacement of Staphylococcus aureus by ...

    • Near-infrared fluorescence imaging as an alternative to bioluminescent bacteria to monitor biomaterial-associated infections 

      Dinjaski, Nina; Shalu, Suri; Valle Turrillas, Jaione Upna; Lehman, Susan M.; Lasa Uzcudun, Íñigo Upna; Prieto, María Auxiliadora; García, Andrés J. (Elsevier, 2014)   Artículo / Artikulua  OpenAccess
      Biomaterial-associated infection is one of the most common complications related with the implantation of any biomedical device. Several in vivo imaging platforms have emerged as powerful diagnostic tools to longitudinally ...

    • Polymicrobial infections: do bacteria behave differently depending on their neighbours? 

      Lasa Uzcudun, Íñigo Upna; Solano Goñi, Cristina Upna (Taylor & Francis, 2018)   Otros / Bestelakoak  OpenAccess
      Despite the number of examples that correlate interspecies interactions in polymicrobial infections with variations in pathogenicity and antibiotic susceptibility of individual organisms, antibiotic therapies are selected ...

    • Protein A-mediated multicellular behavior in Staphylococcus aureus 

      Merino, Nekane Upna; Toledo Arana, Alejandro Upna; Vergara Irigaray, Marta Upna; Valle Turrillas, Jaione Upna; Solano Goñi, Cristina Upna; Calvo, Enrique; Lopez, Juan Antonio; Foster, Timothy J.; Penadés, José R.; Lasa Uzcudun, Íñigo Upna (American Society for Microbiology, 2008)   Artículo / Artikulua  OpenAccess
      The capacity of Staphylococcus aureus to form biofilms on host tissues and implanted medical devices is one of the major virulence traits underlying persistent and chronic infections. The matrix in which S. aureus cells ...

    • Puesta a punto de un método de análisis de virulencia de Staphylococcus aureus en Caenorhabditis elegans 

      Trueba Ambelez, Gaizka (2012)   Trabajo Fin de Máster/Master Amaierako Lana  OpenAccess
      La forma clásica para analizar la virulencia de los microorganismos patógenos humanos ha sido el empleo de modelos animales mamíferos. Desde hace algún tiempo, se han desarrollado modelos alternativos no mamíferos, como ...

    • The regulon of the RNA chaperone CspA and its auto-regulation in Staphylococcus aureus 

      Caballero Sánchez, Carlos Upna; Menéndez Gil, Pilar; Catalán Moreno, Arancha; Vergara Irigaray, Marta Upna; García Martínez, Begoña Upna; Segura, Víctor; Irurzun Domínguez, Naiara; Villanueva San Martín, Maite Upna; Ruiz de los Mozos Aliaga, Igor Upna; Solano Goñi, Cristina Upna; Lasa Uzcudun, Íñigo Upna; Toledo Arana, Alejandro Upna (Oxford University Press, 2018)   Artículo / Artikulua  OpenAccess
      RNA-binding proteins (RBPs) are essential to finetune gene expression. RBPs containing the coldshock domain are RNA chaperones that have been extensively studied. However, the RNA targets and specific functions for ...

    • Relevant role of fibronectin-binding proteins in Staphylococcus aureus biofilm-associated foreign-body infections 

      Vergara Irigaray, Marta Upna; Valle Turrillas, Jaione Upna; Merino, Nekane Upna; Latasa Osta, Cristina Upna; García Martínez, Begoña Upna; Ruiz de los Mozos Aliaga, Igor Upna; Solano Goñi, Cristina Upna; Toledo Arana, Alejandro Upna; Penadés, José R.; Lasa Uzcudun, Íñigo Upna (American Society for Microbiology, 2009)   Artículo / Artikulua  OpenAccess
      Staphylococcus aureus can establish chronic infections on implanted medical devices due to its capacity to form biofilms. Analysis of the factors that assemble cells into a biofilm has revealed the occurrence of strains ...

    • RinA controls phage-mediated packaging and transfer of virulence genes in gram-positive bacteria 

      Ferrer, María Desamparados; Quiles Puchalt, Nuria; Harwich, Michael D.; Tormo Más, María Ángeles; Campoy Sánchez, Susana; Barbé, Jordi; Lasa Uzcudun, Íñigo Upna; Novick, Richard P.; Christie, Gail E.; Penadés, José R. (Oxford University Press, 2011)   Artículo / Artikulua  OpenAccess
      Phage-mediated transfer of microbial genetic elements plays a crucial role in bacterial life style and evolution. In this study, we identify the RinA family of phage-encoded proteins as activators required for transcription ...

    • Role of biofilm-associated protein bap in the pathogenesis of bovine Staphylococcus aureus 

      Cucarella, Carme; Tormo Más, María Ángeles; Ubeda, Carles; Trotonda, María Pilar; Monzon, Marta; Peris, Cristòfol; Amorena Zabalza, Beatriz Upna; Lasa Uzcudun, Íñigo Upna; Penadés, José R. (American Society for Microbiology, 2004)   Artículo / Artikulua  OpenAccess
      Staphylococcus aureus is a common cause of intramammary infections, which frequently become chronic, associated with the ability of the bacteria to produce biofilm. Here, we report a relationship between the ability to ...

    • SarA positively controls Bap-dependent biofilm formation in Staphylococcus aureus 

      Trotonda, María Pilar; Manna, Adhar C.; Cheung, Ambrose L.; Lasa Uzcudun, Íñigo Upna; Penadés, José R. (American Society for Microbiology, 2005)   Artículo / Artikulua  OpenAccess
      The biofilm-associated protein Bap is a staphylococcal surface protein involved in biofilm formation. We investigated the influence of the global regulatory locus sarA on bap expression and Bap-dependent biofilm formation ...

    • Sensory deprivation in Staphylococcus aureus 

      Villanueva San Martín, Maite Upna; García Martínez, Begoña Upna; Valle Turrillas, Jaione Upna; Rapún Araiz, Beatriz Upna; Ruiz de los Mozos Aliaga, Igor Upna; Solano Goñi, Cristina Upna; Martí, Miguel; Penadés, José R.; Toledo Arana, Alejandro Upna; Lasa Uzcudun, Íñigo Upna (Springer Nature, 2018)   Artículo / Artikulua  OpenAccess
      Bacteria use two-component systems (TCSs) to sense and respond to environmental changes. The core genome of the major human pathogen Staphylococcus aureus encodes 16 TCSs, one of which (WalRK) is essential. Here we show ...

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