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Fernández-García L, Gao X, Kirigo J, Song S, Battisti ME, Garcia-Contreras R, Tomas M, Guo Y, Wang X, Wood TK. Single-cell analysis reveals that cryptic prophage protease LfgB protects Escherichia coli during oxidative stress by cleaving antitoxin MqsA. Microbiol Spectr 2024; 12:e0347123. [PMID: 38206055 PMCID: PMC10846083 DOI: 10.1128/spectrum.03471-23] [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: 09/23/2023] [Accepted: 11/30/2023] [Indexed: 01/12/2024] Open
Abstract
Although toxin/antitoxin (TA) systems are ubiquitous, beyond phage inhibition and mobile element stabilization, their role in host metabolism is obscure. One of the best-characterized TA systems is MqsR/MqsA of Escherichia coli, which has been linked previously to protecting gastrointestinal species during the stress it encounters from the bile salt deoxycholate as it colonizes humans. However, some recent whole-population studies have challenged the role of toxins such as MqsR in bacterial physiology since the mqsRA locus is induced over a hundred-fold during stress, but a phenotype was not found upon its deletion. Here, we investigate further the role of MqsR/MqsA by utilizing single cells and demonstrate that upon oxidative stress, the TA system MqsR/MqsA has a heterogeneous effect on the transcriptome of single cells. Furthermore, we discovered that MqsR activation leads to induction of the poorly characterized yfjXY ypjJ yfjZF operon of cryptic prophage CP4-57. Moreover, deletion of yfjY makes the cells sensitive to H2O2, acid, and heat stress, and this phenotype was complemented. Hence, we recommend yfjY be renamed to lfgB (less fatality gene B). Critically, MqsA represses lfgB by binding the operon promoter, and LfgB is a protease that degrades MqsA to derepress rpoS and facilitate the stress response. Therefore, the MqsR/MqsA TA system facilitates the stress response through cryptic phage protease LfgB.IMPORTANCEThe roles of toxin/antitoxin systems in cell physiology are few and include phage inhibition and stabilization of genetic elements; yet, to date, there are no single-transcriptome studies for toxin/antitoxin systems and few insights for prokaryotes from this novel technique. Therefore, our results with this technique are important since we discover and characterize a cryptic prophage protease that is regulated by the MqsR/MqsA toxin/antitoxin system in order to regulate the host response to oxidative stress.
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Affiliation(s)
- Laura Fernández-García
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
- Microbiology Department, Hospital A Coruña (HUAC), A Coruña, Spain
- Microbiology Translational and Multidisciplinary (MicroTM)‐Research Institute Biomedical A Coruña (INIBIC) and Microbiology, University of A Coruña (UDC), A Coruña, Spain
| | - Xinyu Gao
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Institute of Oceanology, Chinese Academy of Sciences, Nansha, Guangzhou, China
- Guangdong Key Laboratory of Marine Materia Medica, Chinese Academy of Sciences, Nansha, Guangzhou, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea, Chinese Academy of Sciences, China, Nansha,, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Joy Kirigo
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Sooyeon Song
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
- Department of Animal Science, Jeonbuk National University, Jeonju-Si, Jellabuk-Do, South Korea
- Department of Agricultural Convergence Technology, Jeonbuk National University, Jeonju-Si, Jellabuk-Do, South Korea
| | - Michael E. Battisti
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Rodolfo Garcia-Contreras
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico, Mexico
| | - Maria Tomas
- Microbiology Department, Hospital A Coruña (HUAC), A Coruña, Spain
- Microbiology Translational and Multidisciplinary (MicroTM)‐Research Institute Biomedical A Coruña (INIBIC) and Microbiology, University of A Coruña (UDC), A Coruña, Spain
| | - Yunxue Guo
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Institute of Oceanology, Chinese Academy of Sciences, Nansha, Guangzhou, China
- Guangdong Key Laboratory of Marine Materia Medica, Chinese Academy of Sciences, Nansha, Guangzhou, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea, Chinese Academy of Sciences, China, Nansha,, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Nansha, Guangzhou, China
| | - Xiaoxue Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Institute of Oceanology, Chinese Academy of Sciences, Nansha, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Nansha, Guangzhou, China
| | - Thomas K. Wood
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
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Fernández-García L, Song S, Kirigo J, Battisti ME, Petersen ME, Tomás M, Wood TK. Toxin/antitoxin systems induce persistence and work in concert with restriction/modification systems to inhibit phage. Microbiol Spectr 2024; 12:e0338823. [PMID: 38054715 PMCID: PMC10783111 DOI: 10.1128/spectrum.03388-23] [Citation(s) in RCA: 1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/06/2023] [Indexed: 12/07/2023] Open
Abstract
IMPORTANCE To date, there are no reports of phage infection-inducing persistence. Therefore, our results are important since we show for the first time that a phage-defense system, the MqsRAC toxin/antitoxin system, allows the host to survive infection by forming persister cells, rather than inducing cell suicide. Moreover, we demonstrate that the MqsRAC system works in concert with restriction/modification systems. These results imply that if phage therapy is to be successful, anti-persister compounds need to be administered along with phages.
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Affiliation(s)
- Laura Fernández-García
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
- Microbiology Department of Hospital A Coruña (CHUAC), Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and University of A Coruña (UDC), A Coruña, Spain
| | - Sooyeon Song
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
- Department of Animal Science, Jeonbuk National University, Jeonju-Si, Jellabuk-Do, South Korea
- Agricultural Convergence Technology, Jeonbuk National University, Jeonju-Si, Jellabuk-Do, South Korea
| | - Joy Kirigo
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Michael E. Battisti
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Maiken E. Petersen
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
- Interdisciplinary Nanoscience Center, Aarhus University, Aarhus, Denmark
| | - María Tomás
- Microbiology Department of Hospital A Coruña (CHUAC), Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and University of A Coruña (UDC), A Coruña, Spain
| | - Thomas K. Wood
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
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Pacios O, Blasco L, Ortiz Cartagena C, Bleriot I, Fernández-García L, López M, Barrio-Pujante A, Cuenca FF, Aracil B, Oteo-Iglesias J, Tomás M. Molecular studies of phages- Klebsiella pneumoniae in mucoid environment: innovative use of mucolytic agents prior to the administration of lytic phages. Front Microbiol 2023; 14:1286046. [PMID: 37886069 PMCID: PMC10598653 DOI: 10.3389/fmicb.2023.1286046] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 09/26/2023] [Indexed: 10/28/2023] Open
Abstract
Mucins are important glycoproteins that form a protective layer throughout the gastrointestinal and respiratory tracts. There is scientific evidence of increase in phage-resistance in the presence of mucin for some bacterial pathogens. Manipulation in mucin composition may ultimately influence the effectiveness of phage therapy. In this work, two clinical strains of K. pneumoniae (K3574 and K3325), were exposed to the lytic bacteriophage vB_KpnS-VAC35 in the presence and absence of mucin on a long-term co-evolution assay, in an attempt to mimic in vitro the exposure to mucins that bacteria and their phages face in vivo. Enumerations of the bacterial and phage counts at regular time intervals were conducted, and extraction of the genomic DNA of co-evolved bacteria to the phage, the mucin and both was performed. We determined the frequency of phage-resistant mutants in the presence and absence of mucin and including a mucolytic agent (N-acetyl L-cysteine, NAC), and sequenced them using Nanopore. We phenotypically demonstrated that the presence of mucin induces the emergence of bacterial resistance against lytic phages, effectively decreased in the presence of NAC. In addition, the genomic analysis revealed some of the genes relevant to the development of phage resistance in long-term co-evolution, with a special focus on the mucoid environment. Genes involved in the metabolism of carbohydrates were mutated in the presence of mucin. In conclusion, the use of mucolytic agents prior to the administration of lytic phages could be an interesting therapeutic option when addressing K. pneumoniae infections in environments where mucin is overproduced.
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Affiliation(s)
- Olga Pacios
- Grupo de Microbiología Traslacional y Multidisciplinar (MicroTM)-Servicio de Microbiología Instituto de Investigación Biomédica A Coruña (INIBIC), Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain
- Grupo de Estudio de los Mecanismos de Resistencia Antimicrobiana (GEMARA) formando parte de la Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
| | - Lucía Blasco
- Grupo de Microbiología Traslacional y Multidisciplinar (MicroTM)-Servicio de Microbiología Instituto de Investigación Biomédica A Coruña (INIBIC), Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain
- Grupo de Estudio de los Mecanismos de Resistencia Antimicrobiana (GEMARA) formando parte de la Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
| | - Concha Ortiz Cartagena
- Grupo de Microbiología Traslacional y Multidisciplinar (MicroTM)-Servicio de Microbiología Instituto de Investigación Biomédica A Coruña (INIBIC), Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain
- Grupo de Estudio de los Mecanismos de Resistencia Antimicrobiana (GEMARA) formando parte de la Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
| | - Inés Bleriot
- Grupo de Microbiología Traslacional y Multidisciplinar (MicroTM)-Servicio de Microbiología Instituto de Investigación Biomédica A Coruña (INIBIC), Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain
- Grupo de Estudio de los Mecanismos de Resistencia Antimicrobiana (GEMARA) formando parte de la Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
| | - Laura Fernández-García
- Grupo de Microbiología Traslacional y Multidisciplinar (MicroTM)-Servicio de Microbiología Instituto de Investigación Biomédica A Coruña (INIBIC), Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain
- Grupo de Estudio de los Mecanismos de Resistencia Antimicrobiana (GEMARA) formando parte de la Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
| | - María López
- Grupo de Microbiología Traslacional y Multidisciplinar (MicroTM)-Servicio de Microbiología Instituto de Investigación Biomédica A Coruña (INIBIC), Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain
- Grupo de Estudio de los Mecanismos de Resistencia Antimicrobiana (GEMARA) formando parte de la Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
| | - Antonio Barrio-Pujante
- Grupo de Microbiología Traslacional y Multidisciplinar (MicroTM)-Servicio de Microbiología Instituto de Investigación Biomédica A Coruña (INIBIC), Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain
- Grupo de Estudio de los Mecanismos de Resistencia Antimicrobiana (GEMARA) formando parte de la Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
| | - Felipe Fernández Cuenca
- Grupo de Estudio de los Mecanismos de Resistencia Antimicrobiana (GEMARA) formando parte de la Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
- Unidad Clínica de Enfermedades Infecciosas y Microbiología Clínica, Hospital Universitario Virgen Macarena, Instituto de Biomedicina de Sevilla (Hospital Universitario Virgen Macarena/CSIC/Universidad de Sevilla), Sevilla, Spain
- MePRAM, Proyecto de Medicina de Precisión contra las resistencias Antimicrobianas, Madrid, Spain
| | - Belén Aracil
- MePRAM, Proyecto de Medicina de Precisión contra las resistencias Antimicrobianas, Madrid, Spain
- Laboratorio de Referencia e Investigación de Resistencias a Antibióticos e Infecciones Sanitarias, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Jesús Oteo-Iglesias
- Grupo de Estudio de los Mecanismos de Resistencia Antimicrobiana (GEMARA) formando parte de la Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
- MePRAM, Proyecto de Medicina de Precisión contra las resistencias Antimicrobianas, Madrid, Spain
- Laboratorio de Referencia e Investigación de Resistencias a Antibióticos e Infecciones Sanitarias, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - María Tomás
- Grupo de Microbiología Traslacional y Multidisciplinar (MicroTM)-Servicio de Microbiología Instituto de Investigación Biomédica A Coruña (INIBIC), Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain
- Grupo de Estudio de los Mecanismos de Resistencia Antimicrobiana (GEMARA) formando parte de la Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC), Madrid, Spain
- MePRAM, Proyecto de Medicina de Precisión contra las resistencias Antimicrobianas, Madrid, Spain
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Fernández-García L, Wood TK. Phage-Defense Systems Are Unlikely to Cause Cell Suicide. Viruses 2023; 15:1795. [PMID: 37766202 PMCID: PMC10535081 DOI: 10.3390/v15091795] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/19/2023] [Accepted: 08/22/2023] [Indexed: 09/29/2023] Open
Abstract
As new phage-defense systems (PDs) are discovered, the overlap between their mechanisms and those of toxin/antitoxin systems (TAs) is becoming clear in that both use similar means to reduce cellular metabolism; for example, both systems have members that deplete energetic compounds (e.g., NAD+, ATP) and deplete nucleic acids, and both have members that inflict membrane damage. Moreover, both TAs and PDs are similar in that rather than altruistically killing the host to limit phage propagation (commonly known as abortive infection), both reduce host metabolism since phages propagate less in slow-growing cells, and slow growth facilitates the interaction of multiple phage-defense systems.
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Affiliation(s)
| | - Thomas K. Wood
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802-4400, USA;
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Fernández-García L, Tomás M, Wood TK. Ribosome inactivation by Escherichia coli GTPase RsgA inhibits T4 phage. Front Microbiol 2023; 14:1242163. [PMID: 37670987 PMCID: PMC10475562 DOI: 10.3389/fmicb.2023.1242163] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 08/07/2023] [Indexed: 09/07/2023] Open
Abstract
Introduction Bacteria must combat phages, and myriad bacterial anti-phage systems have been discovered that reduce host metabolism, for example, by depleting energetic compounds like ATP and NAD+. Hence, these systems indirectly inhibit protein production. Surprisingly, direct reduction of ribosome activity has not been demonstrated to thwart phage. Methods Here, by producing each of the 4,287 Escherichia coli proteins and selecting for anti-phage activity that leads to enhanced growth, we investigated the role of host proteins in phage inhibition. Results and discussion We identified that E. coli GTPase RsgA inhibits lytic phage T4 by inactivating ribosomes.
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Affiliation(s)
- Laura Fernández-García
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, United States
- Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - María Tomás
- Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Thomas K. Wood
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, United States
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Ortiz-Cartagena C, Pablo-Marcos D, Fernández-García L, Blasco L, Pacios O, Bleriot I, Siller M, López M, Fernández J, Aracil B, Fraile-Ribot PA, García-Fernández S, Fernández-Cuenca F, Hernández-García M, Cantón R, Calvo-Montes J, Tomás M. CRISPR-Cas13a-Based Assay for Accurate Detection of OXA-48 and GES Carbapenemases. Microbiol Spectr 2023; 11:e0132923. [PMID: 37466441 PMCID: PMC10434040 DOI: 10.1128/spectrum.01329-23] [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: 03/28/2023] [Accepted: 06/22/2023] [Indexed: 07/20/2023] Open
Abstract
Carbapenem-resistant pathogens have been recognized as a health concern as they are both difficult to treat and detect in clinical microbiology laboratories. Researchers are making great efforts to develop highly specific, sensitive, accurate, and rapid diagnostic techniques, required to prevent the spread of these microorganisms and improve the prognosis of patients. In this context, CRISPR-Cas systems are proposed as promising tools for the development of diagnostic methods due to their high specificity; the Cas13a endonuclease can discriminate single nucleotide changes and displays collateral cleavage activity against single-stranded RNA molecules when activated. This technology is usually combined with isothermal pre-amplification reactions in order to increase its sensitivity. We have developed a new LAMP-CRISPR-Cas13a-based assay for the detection of OXA-48 and GES carbapenemases in clinical samples without the need for nucleic acid purification and concentration. To evaluate the assay, we used 68 OXA-48-like-producing Klebsiella pneumoniae clinical isolates as well as 64 Enterobacter cloacae complex GES-6, 14 Pseudomonas aeruginosa GES-5, 9 Serratia marcescens GES-6, 5 P. aeruginosa GES-6, and 3 P. aeruginosa (GES-15, GES-27, and GES-40) and 1 K. pneumoniae GES-2 isolates. The assay, which takes less than 2 h and costs approximately 10 € per reaction, exhibited 100% specificity and sensitivity (99% confidence interval [CI]) for both OXA-48 and all GES carbapenemases. IMPORTANCE Carbapenems are one of the last-resort antibiotics for defense against multidrug-resistant pathogens. Multiple nucleic acid amplification methods, including multiplex PCR, multiplex loop-mediated isothermal amplification (LAMP) and multiplex RPAs, can achieve rapid, accurate, and simultaneous detection of several resistance genes to carbapenems in a single reaction. However, these assays need thermal cycling steps and specialized instruments, giving them limited application in the field. In this work, we adapted with high specificity and sensitivity values, a new LAMP CRISPR-Cas13a-based assay for the detection of OXA-48 and GES carbapenemases in clinical samples without the need for RNA extraction.
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Affiliation(s)
- Concha Ortiz-Cartagena
- Multidisciplinary and Translational Microbiology Group (MicroTM), Biomedical Research Institute of A Coruña (INIBIC), Microbiology Service, University Hospital of A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) on behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Daniel Pablo-Marcos
- Microbiology Service, University Hospital Marqués de Valdecilla – IDIVAL, Santander, Spain
| | - Laura Fernández-García
- Multidisciplinary and Translational Microbiology Group (MicroTM), Biomedical Research Institute of A Coruña (INIBIC), Microbiology Service, University Hospital of A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) on behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Lucía Blasco
- Multidisciplinary and Translational Microbiology Group (MicroTM), Biomedical Research Institute of A Coruña (INIBIC), Microbiology Service, University Hospital of A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) on behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Olga Pacios
- Multidisciplinary and Translational Microbiology Group (MicroTM), Biomedical Research Institute of A Coruña (INIBIC), Microbiology Service, University Hospital of A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) on behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Inés Bleriot
- Multidisciplinary and Translational Microbiology Group (MicroTM), Biomedical Research Institute of A Coruña (INIBIC), Microbiology Service, University Hospital of A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) on behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - María Siller
- Microbiology Service, University Hospital Marqués de Valdecilla – IDIVAL, Santander, Spain
| | - María López
- Multidisciplinary and Translational Microbiology Group (MicroTM), Biomedical Research Institute of A Coruña (INIBIC), Microbiology Service, University Hospital of A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) on behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Javier Fernández
- Microbiology Service, University Hospital Central de Asturias. Translational Microbiology Group, ISPA, Oviedo, Spain
- CIBER de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Belén Aracil
- Reference and Research Laboratory for Antibiotic Resistance and Health Care Infections, National Centre for Microbiology, Institute of Health Carlos III, Majadahonda, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Pablo Arturo Fraile-Ribot
- Microbiology Service, University Hospital Son Espases and Health Research Institute Illes Balears (IdISBa), Palma de Mallorca, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | | | - Felipe Fernández-Cuenca
- Clinical Unit of Infectious Diseases and Microbiology, University Hospital Virgen Macarena, Institute of Biomedicine of Sevilla (University Hospital Virgen Macarena/CSIC/University of Sevilla), Sevilla, Spain
| | - Marta Hernández-García
- Microbiology Service, University Hospital Ramón y Cajal and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Rafael Cantón
- Microbiology Service, University Hospital Ramón y Cajal and Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Jorge Calvo-Montes
- Microbiology Service, University Hospital Marqués de Valdecilla – IDIVAL, Santander, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - María Tomás
- Multidisciplinary and Translational Microbiology Group (MicroTM), Biomedical Research Institute of A Coruña (INIBIC), Microbiology Service, University Hospital of A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) on behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
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Bleriot I, Blasco L, Pacios O, Fernández-García L, López M, Ortiz-Cartagena C, Barrio-Pujante A, Fernández-Cuenca F, Pascual Á, Martínez-Martínez L, Oteo-Iglesias J, Tomás M. Proteomic Study of the Interactions between Phages and the Bacterial Host Klebsiella pneumoniae. Microbiol Spectr 2023; 11:e0397422. [PMID: 36877024 PMCID: PMC10100988 DOI: 10.1128/spectrum.03974-22] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 02/08/2023] [Indexed: 03/07/2023] Open
Abstract
Phages and bacteria have acquired resistance mechanisms for protection. In this context, the aims of the present study were to analyze the proteins isolated from 21 novel lytic phages of Klebsiella pneumoniae in search of defense mechanisms against bacteria and also to determine the infective capacity of the phages. A proteomic study was also conducted to investigate the defense mechanisms of two clinical isolates of K. pneumoniae infected by phages. For this purpose, the 21 lytic phages were sequenced and de novo assembled. The host range was determined in a collection of 47 clinical isolates of K. pneumoniae, revealing the variable infective capacity of the phages. Genome sequencing showed that all of the phages were lytic phages belonging to the order Caudovirales. Phage sequence analysis revealed that the proteins were organized in functional modules within the genome. Although most of the proteins have unknown functions, multiple proteins were associated with defense mechanisms against bacteria, including the restriction-modification system, the toxin-antitoxin system, evasion of DNA degradation, blocking of host restriction and modification, the orphan CRISPR-Cas system, and the anti-CRISPR system. Proteomic study of the phage-host interactions (i.e., between isolates K3574 and K3320, which have intact CRISPR-Cas systems, and phages vB_KpnS-VAC35 and vB_KpnM-VAC36, respectively) revealed the presence of several defense mechanisms against phage infection (prophage, defense/virulence/resistance, oxidative stress and plasmid proteins) in the bacteria, and of the Acr candidate (anti-CRISPR protein) in the phages. IMPORTANCE Researchers, including microbiologists and infectious disease specialists, require more knowledge about the interactions between phages and their bacterial hosts and about their defense mechanisms. In this study, we analyzed the molecular mechanisms of viral and bacterial defense in phages infecting clinical isolates of K. pneumoniae. Viral defense mechanisms included restriction-modification system evasion, the toxin-antitoxin (TA) system, DNA degradation evasion, blocking of host restriction and modification, and resistance to the abortive infection system, anti-CRISPR and CRISPR-Cas systems. Regarding bacterial defense mechanisms, proteomic analysis revealed expression of proteins involved in the prophage (FtsH protease modulator), plasmid (cupin phosphomannose isomerase protein), defense/virulence/resistance (porins, efflux pumps, lipopolysaccharide, pilus elements, quorum network proteins, TA systems, and methyltransferases), oxidative stress mechanisms, and Acr candidates (anti-CRISPR protein). The findings reveal some important molecular mechanisms involved in the phage-host bacterial interactions; however, further study in this field is required to improve the efficacy of phage therapy.
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Affiliation(s)
- Inés Bleriot
- Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Lucia Blasco
- Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Olga Pacios
- Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Laura Fernández-García
- Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - María López
- Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Concha Ortiz-Cartagena
- Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Antonio Barrio-Pujante
- Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Felipe Fernández-Cuenca
- Clinical Unit of Infectious Diseases and Microbiology, Hospital Universitario Virgen Macarena, Institute of Biomedicine of Seville (University Hospital Virgen Macarena/CSIC/University of Seville), Seville, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Álvaro Pascual
- Clinical Unit of Infectious Diseases and Microbiology, Hospital Universitario Virgen Macarena, Institute of Biomedicine of Seville (University Hospital Virgen Macarena/CSIC/University of Seville), Seville, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Luis Martínez-Martínez
- Clinical Unit of Microbiology, Reina Sofía University Hospital, Department of Agricultural Chemistry, Edaphology and Microbiology, University of Cordoba, Maimonides Biomedical Research Institute (IMIBIC), Cordoba, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Jesús Oteo-Iglesias
- Reference and Research Laboratory for Antibiotic Resistance and Health Care Infections, National Centre for Microbiology, Institute of Health Carlos III, Majadahonda, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - María Tomás
- Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
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8
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Blasco L, de Aledo MG, Ortiz-Cartagena C, Blériot I, Pacios O, López M, Fernández-García L, Barrio-Pujante A, Hernández-Garcia M, Cantón R, Tomás M. Study of 32 new phage tail-like bacteriocins (pyocins) from a clinical collection of Pseudomonas aeruginosa and of their potential use as typing markers and antimicrobial agents. Sci Rep 2023; 13:117. [PMID: 36596850 PMCID: PMC9810705 DOI: 10.1038/s41598-022-27341-1] [Citation(s) in RCA: 3] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 12/30/2022] [Indexed: 01/05/2023] Open
Abstract
Phage tail-like bacteriocins (PTLBs) are large proteomic structures similar to the tail phages. These structures function in bacterial competition by making pores in the membrane of their competitors. The PTLBs identified in Pseudomonas aeruginosa are known as R-type and F-type pyocins, which have a narrow spectrum of action. Their specificity is determined by the tail fiber and is closely related to the lipopolysaccharide type of the target competitor strain. In this study, the genome sequences of 32 clinical of P. aeruginosa clinical isolates were analysed to investigate the presence of R-type and F-type pyocins, and one was detected in all strains tested. The pyocins were classified into 4 groups on the basis of the tail fiber and also the homology, phylogeny and structure of the cluster components. A relationship was established between these groups and the sequence type and serotype of the strain of origin and finally the killing spectrum of the representative pyocins was determined showing a variable range of activity between 0 and 37.5%. The findings showed that these pyocins could potentially be used for typing of P. aeruginosa clinical isolates, on the basis of their genomic sequence and cluster structure, and also as antimicrobial agents.
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Affiliation(s)
- Lucía Blasco
- grid.8073.c0000 0001 2176 8535Microbiología Traslacional y Multidisciplinar (MicroTM)-Instituto de Investigación Biomédica (INIBIC), Servicio de Microbiología, Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain ,Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Manuel González de Aledo
- grid.8073.c0000 0001 2176 8535Microbiología Traslacional y Multidisciplinar (MicroTM)-Instituto de Investigación Biomédica (INIBIC), Servicio de Microbiología, Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain ,Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Concha Ortiz-Cartagena
- grid.8073.c0000 0001 2176 8535Microbiología Traslacional y Multidisciplinar (MicroTM)-Instituto de Investigación Biomédica (INIBIC), Servicio de Microbiología, Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain ,Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Inés Blériot
- grid.8073.c0000 0001 2176 8535Microbiología Traslacional y Multidisciplinar (MicroTM)-Instituto de Investigación Biomédica (INIBIC), Servicio de Microbiología, Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain ,Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Olga Pacios
- grid.8073.c0000 0001 2176 8535Microbiología Traslacional y Multidisciplinar (MicroTM)-Instituto de Investigación Biomédica (INIBIC), Servicio de Microbiología, Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain ,Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - María López
- grid.8073.c0000 0001 2176 8535Microbiología Traslacional y Multidisciplinar (MicroTM)-Instituto de Investigación Biomédica (INIBIC), Servicio de Microbiología, Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain ,Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Laura Fernández-García
- grid.8073.c0000 0001 2176 8535Microbiología Traslacional y Multidisciplinar (MicroTM)-Instituto de Investigación Biomédica (INIBIC), Servicio de Microbiología, Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain ,Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Antonio Barrio-Pujante
- grid.8073.c0000 0001 2176 8535Microbiología Traslacional y Multidisciplinar (MicroTM)-Instituto de Investigación Biomédica (INIBIC), Servicio de Microbiología, Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain ,Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Marta Hernández-Garcia
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain ,Servicio de Microbiología, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Rafael Cantón
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain ,Servicio de Microbiología, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - María Tomás
- grid.8073.c0000 0001 2176 8535Microbiología Traslacional y Multidisciplinar (MicroTM)-Instituto de Investigación Biomédica (INIBIC), Servicio de Microbiología, Hospital A Coruña (CHUAC), Universidad de A Coruña (UDC), A Coruña, Spain ,Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
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9
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Song S, Semenova E, Severinov K, Fernández-García L, Benedik MJ, Maeda T, Wood TK. CRISPR-Cas Controls Cryptic Prophages. Int J Mol Sci 2022; 23:16195. [PMID: 36555835 PMCID: PMC9782134 DOI: 10.3390/ijms232416195] [Citation(s) in RCA: 2] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
The bacterial archetypal adaptive immune system, CRISPR-Cas, is thought to be repressed in the best-studied bacterium, Escherichia coli K-12. We show here that the E. coli CRISPR-Cas system is active and serves to inhibit its nine defective (i.e., cryptic) prophages. Specifically, compared to the wild-type strain, reducing the amounts of specific interfering RNAs (crRNA) decreases growth by 40%, increases cell death by 700%, and prevents persister cell resuscitation. Similar results were obtained by inactivating CRISPR-Cas by deleting the entire 13 spacer region (CRISPR array); hence, CRISPR-Cas serves to inhibit the remaining deleterious effects of these cryptic prophages, most likely through CRISPR array-derived crRNA binding to cryptic prophage mRNA rather than through cleavage of cryptic prophage DNA, i.e., self-targeting. Consistently, four of the 13 E. coli spacers contain complementary regions to the mRNA sequences of seven cryptic prophages, and inactivation of CRISPR-Cas increases the level of mRNA for lysis protein YdfD of cryptic prophage Qin and lysis protein RzoD of cryptic prophage DLP-12. In addition, lysis is clearly seen via transmission electron microscopy when the whole CRISPR-Cas array is deleted, and eliminating spacer #12, which encodes crRNA with complementary regions for DLP-12 (including rzoD), Rac, Qin (including ydfD), and CP4-57 cryptic prophages, also results in growth inhibition and cell lysis. Therefore, we report the novel results that (i) CRISPR-Cas is active in E. coli and (ii) CRISPR-Cas is used to tame cryptic prophages, likely through RNAi, i.e., unlike with active lysogens, active CRISPR-Cas and cryptic prophages may stably co-exist.
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Affiliation(s)
- Sooyeon Song
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, USA
- Department of Animal Science, Jeonbuk National University, Jeonju-Si 54896, Republic of Korea
- Agricultural Convergence Technology, Jeonbuk National University, Jeonju-Si 54896, Republic of Korea
| | - Ekaterina Semenova
- Waksman Institute of Microbiology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Konstantin Severinov
- Waksman Institute of Microbiology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Laura Fernández-García
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, USA
| | - Michael J. Benedik
- Office of the Provost, Hamad bin Khalifa University, Education City, Doha P.O. Box 34110, Qatar
| | - Toshinari Maeda
- Department of Biological Functions Engineering, Kyushu Institute of Technology, Kitakyushu 808-0196, Japan
| | - Thomas K. Wood
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, USA
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10
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Ortiz-Cartagena C, Fernández-García L, Blasco L, Pacios O, Bleriot I, López M, Cantón R, Tomás M. Reverse Transcription-Loop-Mediated Isothermal Amplification-CRISPR-Cas13a Technology as a Promising Diagnostic Tool for SARS-CoV-2. Microbiol Spectr 2022; 10:e0239822. [PMID: 36169448 PMCID: PMC9604158 DOI: 10.1128/spectrum.02398-22] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [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: 07/07/2022] [Accepted: 09/07/2022] [Indexed: 01/04/2023] Open
Abstract
At the end of 2019, a new coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), caused a pandemic that persists to date and has resulted in more than 6.2 million deaths. In the last couple of years, researchers have made great efforts to develop a diagnostic technique that maintains high levels of sensitivity and specificity, since an accurate and early diagnosis is required to minimize the prevalence of SARS-CoV-2 infection. In this context, CRISPR-Cas systems are proposed as promising tools for development as diagnostic techniques due to their high specificity, highlighting that Cas13 endonuclease discriminates single nucleotide changes and displays collateral activity against single-stranded RNA molecules. With the aim of improving the sensitivity of diagnosis, this technology is usually combined with isothermal preamplification reactions (SHERLOCK, DETECTR). Based on this, we developed a reverse transcription-loop-mediated isothermal amplification (RT-LAMP)-CRISPR-Cas13a method for SARS-CoV-2 virus detection in nasopharyngeal samples without using RNA extraction that exhibits 100% specificity and 83% sensitivity, as well as a positive predictive value (PPV) of 100% and negative predictive values (NPVs) of 100%, 81%, 79.1%, and 66.7% for cycle threshold (CT) values of <20, 20 to 30, >30 and overall, respectively. IMPORTANCE The coronavirus disease 2019 (COVID-19) crisis has driven the development of innovative molecular diagnosis methods, including CRISPR-Cas technology. In this work, we performed a protocol, working with RNA extraction kit-free samples and using RT-LAMP-CRISPR-Cas13a technology; our results place this method at the forefront of rapid and specific diagnostic methods for COVID-19 due to the high specificity (100%), sensitivity (83%), PPVs (100%), and NPVs (81% for high viral loads) obtained with clinical samples.
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Affiliation(s)
- Concha Ortiz-Cartagena
- Translational and Multidisciplinary Microbiology (MicroTM), Biomedical Research Institute A Coruña (INIBIC), Microbiology Department, Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Laura Fernández-García
- Translational and Multidisciplinary Microbiology (MicroTM), Biomedical Research Institute A Coruña (INIBIC), Microbiology Department, Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Lucia Blasco
- Translational and Multidisciplinary Microbiology (MicroTM), Biomedical Research Institute A Coruña (INIBIC), Microbiology Department, Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Olga Pacios
- Translational and Multidisciplinary Microbiology (MicroTM), Biomedical Research Institute A Coruña (INIBIC), Microbiology Department, Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Inés Bleriot
- Translational and Multidisciplinary Microbiology (MicroTM), Biomedical Research Institute A Coruña (INIBIC), Microbiology Department, Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - María López
- Translational and Multidisciplinary Microbiology (MicroTM), Biomedical Research Institute A Coruña (INIBIC), Microbiology Department, Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Spanish Network for Research in Infectious Diseases (REIPI) and CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Rafael Cantón
- Spanish Network for Research in Infectious Diseases (REIPI) and CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
- Servicio de Microbiología, Hospital Universitario Ramón y Cajal and Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain
| | - María Tomás
- Translational and Multidisciplinary Microbiology (MicroTM), Biomedical Research Institute A Coruña (INIBIC), Microbiology Department, Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Spanish Network for Research in Infectious Diseases (REIPI) and CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
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11
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Muthami JM, Fernández-García L, Tomás M, Wood TK. What is the fate of the biofilm matrix? Environ Microbiol 2022; 24:4495-4499. [PMID: 35912827 DOI: 10.1111/1462-2920.16097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 06/04/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Joy M Muthami
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Laura Fernández-García
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA.,Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - María Tomás
- Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Thomas K Wood
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
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12
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Fernández-García L, Muthami JM, Tomas M, Wood TK. What are the options for treating infections by persister-forming pathogens? Environ Microbiol 2022; 24:4500-4504. [PMID: 35912818 DOI: 10.1111/1462-2920.16117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 06/21/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Laura Fernández-García
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA.,Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Joy M Muthami
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Maria Tomas
- Microbiology Translational and Multidisciplinary (MicroTM)-Research Institute Biomedical A Coruña (INIBIC) and Microbiology Department of Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Thomas K Wood
- Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania, USA
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13
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Ambroa A, Blasco L, López M, Pacios O, Bleriot I, Fernández-García L, González de Aledo M, Ortiz-Cartagena C, Millard A, Tomás M. Genomic Analysis of Molecular Bacterial Mechanisms of Resistance to Phage Infection. Front Microbiol 2022; 12:784949. [PMID: 35250902 PMCID: PMC8891609 DOI: 10.3389/fmicb.2021.784949] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 09/28/2021] [Accepted: 12/27/2021] [Indexed: 12/27/2022] Open
Abstract
To optimize phage therapy, we need to understand how bacteria evolve against phage attacks. One of the main problems of phage therapy is the appearance of bacterial resistance variants. The use of genomics to track antimicrobial resistance is increasingly developed and used in clinical laboratories. For that reason, it is important to consider, in an emerging future with phage therapy, to detect and avoid phage-resistant strains that can be overcome by the analysis of metadata provided by whole-genome sequencing. Here, we identified genes associated with phage resistance in 18 Acinetobacter baumannii clinical strains belonging to the ST-2 clonal complex during a decade (Ab2000 vs. 2010): 9 from 2000 to 9 from 2010. The presence of genes putatively associated with phage resistance was detected. Genes detected were associated with an abortive infection system, restriction–modification system, genes predicted to be associated with defense systems but with unknown function, and CRISPR-Cas system. Between 118 and 171 genes were found in the 18 clinical strains. On average, 26% of these genes were detected inside genomic islands in the 2000 strains and 32% in the 2010 strains. Furthermore, 38 potential CRISPR arrays in 17 of 18 of the strains were found, as well as 705 proteins associated with CRISPR-Cas systems. A moderately higher presence of these genes in the strains of 2010 in comparison with those of 2000 was found, especially those related to the restriction–modification system and CRISPR-Cas system. The presence of these genes in genomic islands at a higher rate in the strains of 2010 compared with those of 2000 was also detected. Whole-genome sequencing and bioinformatics could be powerful tools to avoid drawbacks when a personalized therapy is applied. In this study, it allows us to take care of the phage resistance in A. baumannii clinical strains to prevent a failure in possible phage therapy.
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Affiliation(s)
- Antón Ambroa
- Microbiology Department-Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Lucia Blasco
- Microbiology Department-Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - María López
- Microbiology Department-Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
- Spanish Network for Research in Infectious Diseases (REIPI), Infectious Diseases Network Biomedical Research Center (CIBERINFEC), Carlos III Health Institute, Madrid, Spain
| | - Olga Pacios
- Microbiology Department-Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Inés Bleriot
- Microbiology Department-Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Laura Fernández-García
- Microbiology Department-Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Manuel González de Aledo
- Microbiology Department-Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Concha Ortiz-Cartagena
- Microbiology Department-Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
| | - Andrew Millard
- Department of Genetics and Genome Biology, University of Leicester, Leicester, United Kingdom
| | - María Tomás
- Microbiology Department-Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA) the Behalf of the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid, Spain
- Spanish Network for Research in Infectious Diseases (REIPI), Infectious Diseases Network Biomedical Research Center (CIBERINFEC), Carlos III Health Institute, Madrid, Spain
- *Correspondence: María Tomás,
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14
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Boukhvalov DW, Zhidkov IS, Kiryakov A, Menéndez JL, Fernández-García L, Kukharenko AI, Cholakh SO, Zatsepin AF, Kurmaev EZ. Unveiling the Atomic and Electronic Structure of Stacked-Cup Carbon Nanofibers. Nanoscale Res Lett 2021; 16:153. [PMID: 34633574 PMCID: PMC8505591 DOI: 10.1186/s11671-021-03595-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 08/18/2021] [Indexed: 06/13/2023]
Abstract
We report results of comprehensive experimental exploration (X-ray photoemission, Raman and optical spectroscopy) of carbon nanofibers (CNFs) in combination with first-principles modeling. Core-level spectra demonstrate prevalence of sp2 hybridization of carbon atoms in CNF with a trace amount of carbon-oxygen bonds. The density functional theory (DFT)-based calculations demonstrated no visible difference between mono- and bilayers because σ-orbitals are related to in-plane covalent bonds. The influence of the distortions on π-peak is found to be significant only for bilayers as a result of π-π interlayer bonds formation. These results are supported by both experimental Raman and XPS valence band spectra. The combination of optical measurements with a theoretical modeling indicates the formation of optically active graphene quantum dots (GQDs) in the CNF matrix, with a radiative relaxation of the excited π* state. The calculated electronic structure of these GQDs is in quantitative agreement with the measured optical transitions and provides an explanation of the absence of visible contribution from these GQDs to the measured valence bands spectra.
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Affiliation(s)
- D W Boukhvalov
- College of Science, Institute of Materials Physics and Chemistry, Nanjing Forestry University, Nanjing, 210037, People's Republic of China.
- Institute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002.
| | - I S Zhidkov
- Institute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002
- M.N. Mikheev Institute of Metal Physics, Russian Academy of Sciences, Ural Branch, Yekaterinburg, Russia, 620108
| | - A Kiryakov
- Institute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002
| | - J L Menéndez
- Centro de Investigación en Nanomateriales Y Nanotecnología, Consejo Superior de Investigaciones Científicas (CSIC)-Universidad de Oviedo (UO)-Principado de Asturias, Avenida de la Vega 4-6, El Entrego, 33940, San Martin del Rey Aurelio, Asturias, Spain
| | - L Fernández-García
- Centro de Investigación en Nanomateriales Y Nanotecnología, Consejo Superior de Investigaciones Científicas (CSIC)-Universidad de Oviedo (UO)-Principado de Asturias, Avenida de la Vega 4-6, El Entrego, 33940, San Martin del Rey Aurelio, Asturias, Spain
| | - A I Kukharenko
- Institute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002
| | - S O Cholakh
- Institute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002
| | - A F Zatsepin
- Institute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002
| | - E Z Kurmaev
- Institute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia, 620002
- M.N. Mikheev Institute of Metal Physics, Russian Academy of Sciences, Ural Branch, Yekaterinburg, Russia, 620108
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15
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Pola L, Fernández-García L, Collado S, Oulego P, Díaz M. Heavy metal solubilisation during the hydrothermal treatment of sludge. J Environ Manage 2021; 286:112120. [PMID: 33631517 DOI: 10.1016/j.jenvman.2021.112120] [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] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 01/21/2021] [Accepted: 02/02/2021] [Indexed: 06/12/2023]
Abstract
The present study analyses the combined effects of temperature (from 160 to 200 °C), and, for the first time ever, type of atmosphere (oxidising or inert) and pressure (from 60 to 100 bar) on the solubilisation of heavy metals during the hydrothermal treatment of wet no-diluted sewage sludge. Results revealed that Cd, Pb, Al and Fe were hardly affected by neither the atmosphere nor temperature, remained almost completely in the solid phase during all the hydrothermal treatments tested; while Cr, Ni, Cu and Zn were partially solubilised, being this solubilisation favoured by the presence of an oxidising atmosphere. In contrast, initial dissolved Hg was partially precipitated under both types of atmosphere, although it was re-dissolved after 30 min under an inert atmosphere. Regarding the working conditions, the highest temperature (200 °C) caused the greatest metal immobilisation, whereas the range of pressures tested barely had any effect on it. Concerning the reaction time, the lowest concentration of metals in the liquid fraction of the hydrolysed sludge was obtained during the initial 30 min of treatment.
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Affiliation(s)
- Lucía Pola
- Department of Chemical and Environmental Engineering, University of Oviedo, 33071, Oviedo, Spain
| | - Laura Fernández-García
- Department of Chemical and Environmental Engineering, University of Oviedo, 33071, Oviedo, Spain
| | - Sergio Collado
- Department of Chemical and Environmental Engineering, University of Oviedo, 33071, Oviedo, Spain
| | - Paula Oulego
- Department of Chemical and Environmental Engineering, University of Oviedo, 33071, Oviedo, Spain
| | - Mario Díaz
- Department of Chemical and Environmental Engineering, University of Oviedo, 33071, Oviedo, Spain.
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16
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Puentes-Gutiérrez AB, García-Bascones M, Sánchez-Casado M, Fernández-García L, Puentes-Gutiérrez R, Marquina-Valero MA. Treatment of Post-Breast Surgery Pain Syndrome with Botulinum Toxin: Analysis of The Response to the Addition of Levobupivacaine and to the Type of Surgery. Arch Breast Cancer 2021. [DOI: 10.32768/abc.202182115-118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background: The spasm and/or contracture of the pectoralis major contribute to the post-breast surgery pain. The purpose of our study was to evaluate changes in the post-breast surgical pain syndrome after the infiltration of botulinum-toxin type-A (BTX-A), according to the type of surgery and the reconstitution of the botulinum-toxin. Methods: This retrospective study was conducted at the Rehabilitation Department with two cohorts: BTX-A reconstituted with saline solution (SS group) or with levobupivacaine (LV group). Data about pectoralis major contracture and pain (global, at night, at rest and during activity) before the infiltration and six weeks after that were collected from the medical records and compared between SS and LV groups, and between conservative breast surgery and mastectomy cases. Results: in the study, 48 women aged 53.3 (±11.10) years were included, with 26 (54.2%) in SS group and 22 (45.8%) in LV group. There were no differences between both groups except transitory paresis (3.8% vs 22.7%; P=0.022). In all patients, baseline circumstances vs after 6 weeks were compared, and we found significant differences in contracture (1,77 (±0.57) vs 0.97 (±0.79)), VAS global (5.45 (±1.92) vs 3.46 (±2.48)), VAS night (3.17 (±3.13) vs 1.61 (±2.29)), VAS rest (2.14 (±2.56) vs 1.21 (±1.98)) and VAS activity (4.31 (±2.55) vs 2.78 (±2.58)). We found higher improvements in the breast conservative surgery. Conclusion: A significant lower pain and contracture after BTX-A injection in the pectoralis major was observed, but its reconstitution in levobupivacaine may not be an effective method to increase the analgesic effect. There were higher improvements in the breast conservative surgery than in the mastectomy.
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17
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Martínez-Viñuela I, Paredes-Borrachero I, Rubio-Mellado M, Fernández-García L, Madrid-Sánchez J, García-Bascones M, Díaz-Jiménez M. [Syndrome of the trephined]. Rehabilitacion (Madr) 2021; 55:325-328. [PMID: 33414016 DOI: 10.1016/j.rh.2020.11.005] [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: 04/11/2020] [Revised: 11/23/2020] [Accepted: 11/27/2020] [Indexed: 11/15/2022]
Abstract
Syndrome of the trephined (SoT) is the neurological deterioration that occurs after the performance of decompressive craniectomy in which bone is not replaced. The incidence of SoT varies, but this entity seems to be underdiagnosed. It is characterized by symptom reversal after bone replacement, which is the only definitive treatment. We report the case of a patient assessed by the Rehabilitation Service in the Critical Care Unit after a stroke, who had altered level of consciousness and abrupt motor impairment. The patient was diagnosed with SoT. Rehabilitation, with early postural changes, helped to ameliorate the symptoms until the provision of definitive treatment.
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Affiliation(s)
- I Martínez-Viñuela
- Servicio de Medicina Física y Rehabilitación, Complejo Hospitalario de Toledo, Toledo, España.
| | | | - M Rubio-Mellado
- Servicio de Medicina Física y Rehabilitación, Complejo Hospitalario de Toledo, Toledo, España
| | - L Fernández-García
- Servicio de Medicina Física y Rehabilitación, Complejo Hospitalario de Toledo, Toledo, España
| | - J Madrid-Sánchez
- Servicio de Medicina Física y Rehabilitación, Complejo Hospitalario de Toledo, Toledo, España
| | - M García-Bascones
- Servicio de Medicina Física y Rehabilitación, Complejo Hospitalario de Toledo, Toledo, España
| | - M Díaz-Jiménez
- Servicio de Medicina Física y Rehabilitación, Complejo Hospitalario de Toledo, Toledo, España
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18
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Bleriot I, Trastoy R, Blasco L, Fernández-Cuenca F, Ambroa A, Fernández-García L, Pacios O, Perez-Nadales E, Torre-Cisneros J, Oteo-Iglesias J, Navarro F, Miró E, Pascual A, Bou G, Martínez-Martínez L, Tomas M. Genomic analysis of 40 prophages located in the genomes of 16 carbapenemase-producing clinical strains of Klebsiella pneumoniae. Microb Genom 2020; 6:e000369. [PMID: 32375972 PMCID: PMC7371120 DOI: 10.1099/mgen.0.000369] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 10/21/2019] [Accepted: 03/31/2020] [Indexed: 12/12/2022] Open
Abstract
Klebsiella pneumoniae is the clinically most important species within the genus Klebsiella and, as a result of the continuous emergence of multi-drug resistant (MDR) strains, the cause of severe nosocomial infections. The decline in the effectiveness of antibiotic treatments for infections caused by MDR bacteria has generated particular interest in the study of bacteriophages. In this study, we characterized a total of 40 temperate bacteriophages (prophages) with a genome range of 11.454-84.199 kb, predicted from 16 carbapenemase-producing clinical strains of K. pneumoniae belonging to different sequence types, previously identified by multilocus sequence typing. These prophages were grouped into the three families in the order Caudovirales (27 prophages belonging to the family Myoviridae, 10 prophages belonging to the family Siphoviridae and 3 prophages belonging to the family Podoviridae). Genomic comparison of the 40 prophage genomes led to the identification of four prophages isolated from different strains and of genome sizes of around 33.3, 36.1, 39.6 and 42.6 kb. These prophages showed sequence similarities (query cover >90 %, identity >99.9 %) with international Microbe Versus Phage (MVP) (http://mvp.medgenius.info/home) clusters 4762, 4901, 3499 and 4280, respectively. Phylogenetic analysis revealed the evolutionary proximity among the members of the four groups of the most frequently identified prophages in the bacterial genomes studied (33.3, 36.1, 39.6 and 42.6 kb), with bootstrap values of 100 %. This allowed the prophages to be classified into three clusters: A, B and C. Interestingly, these temperate bacteriophages did not infect the highest number of strains as indicated by a host-range assay, these results could be explained by the development of superinfection exclusion mechanisms. In addition, bioinformatic analysis of the 40 identified prophages revealed the presence of 2363 proteins. In total, 59.7 % of the proteins identified had a predicted function, mainly involving viral structure, transcription, replication and regulation (lysogenic/lysis). Interestingly, some proteins had putative functions associated with bacterial virulence (toxin expression and efflux pump regulators), phage defence profiles such as toxin-antitoxin modules, an anti-CRISPR/Cas9 protein, TerB protein (from terZABCDE operon) and methyltransferase proteins.
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Affiliation(s)
- Ines Bleriot
- Microbiology Department, Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
| | - Rocío Trastoy
- Microbiology Department, Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
| | - Lucia Blasco
- Microbiology Department, Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
| | - Felipe Fernández-Cuenca
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
- Clinical Unit for Infectious Diseases, Microbiology and Preventive Medicine, Hospital Universitario Virgen Macarena. Deparment of Microbiology and Medicine, University of Seville, Seville, Spain
- Spanish Network for the Research in Infectious Diseases, REIPI, Seville, Spain
| | - Antón Ambroa
- Microbiology Department, Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
| | - Laura Fernández-García
- Microbiology Department, Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
| | - Olga Pacios
- Microbiology Department, Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
| | - Elena Perez-Nadales
- Spanish Network for the Research in Infectious Diseases, REIPI, Seville, Spain
- Microbiology Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), University Hospital Reina Sofía, University of Córdoba, Cordoba, Spain
| | - Julian Torre-Cisneros
- Spanish Network for the Research in Infectious Diseases, REIPI, Seville, Spain
- Microbiology Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), University Hospital Reina Sofía, University of Córdoba, Cordoba, Spain
| | - Jesús Oteo-Iglesias
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
- Spanish Network for the Research in Infectious Diseases, REIPI, Seville, Spain
- Reference and Research Laboratory for Antibiotic Resistance and Health Care Infections, National Centre for Microbiology, Institute of Health Carlos III, Majadahonda, Madrid, Spain
| | - Ferran Navarro
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
- Microbiology Department, Sant Pau Hospital, Autonomous University of Barcelona (Bellaterra), Barcelona, Spain
| | - Elisenda Miró
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
- Microbiology Department, Sant Pau Hospital, Autonomous University of Barcelona (Bellaterra), Barcelona, Spain
| | - Alvaro Pascual
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
- Clinical Unit for Infectious Diseases, Microbiology and Preventive Medicine, Hospital Universitario Virgen Macarena. Deparment of Microbiology and Medicine, University of Seville, Seville, Spain
- Spanish Network for the Research in Infectious Diseases, REIPI, Seville, Spain
| | - German Bou
- Microbiology Department, Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
- Spanish Network for the Research in Infectious Diseases, REIPI, Seville, Spain
| | - Luis Martínez-Martínez
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
- Spanish Network for the Research in Infectious Diseases, REIPI, Seville, Spain
- Microbiology Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), University Hospital Reina Sofía, University of Córdoba, Cordoba, Spain
| | - Maria Tomas
- Microbiology Department, Research Institute Biomedical A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
- Study Group on Mechanisms of Action and Resistance to Antimicrobials (GEMARA), Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC), Madrid
- Spanish Network for the Research in Infectious Diseases, REIPI, Seville, Spain
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19
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Tuttobene MR, Fernández-García L, Blasco L, Cribb P, Ambroa A, Müller GL, Fernández-Cuenca F, Bleriot I, Rodríguez RE, Barbosa BGV, Lopez-Rojas R, Trastoy R, López M, Bou G, Tomás M, Mussi MA. Quorum and Light Signals Modulate Acetoin/Butanediol Catabolism in Acinetobacter spp. Front Microbiol 2019; 10:1376. [PMID: 31281296 PMCID: PMC6595428 DOI: 10.3389/fmicb.2019.01376] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 03/28/2019] [Accepted: 06/03/2019] [Indexed: 12/25/2022] Open
Abstract
Acinetobacter spp. are found in all environments on Earth due to their extraordinary capacity to survive in the presence of physical and chemical stressors. In this study, we analyzed global gene expression in airborne Acinetobacter sp. strain 5-2Ac02 isolated from hospital environment in response to quorum network modulators and found that they induced the expression of genes of the acetoin/butanediol catabolism, volatile compounds shown to mediate interkingdom interactions. Interestingly, the acoN gene, annotated as a putative transcriptional regulator, was truncated in the downstream regulatory region of the induced acetoin/butanediol cluster in Acinetobacter sp. strain 5-2Ac02, and its functioning as a negative regulator of this cluster integrating quorum signals was confirmed in Acinetobacter baumannii ATCC 17978. Moreover, we show that the acetoin catabolism is also induced by light and provide insights into the light transduction mechanism by showing that the photoreceptor BlsA interacts with and antagonizes the functioning of AcoN in A. baumannii, integrating also a temperature signal. The data support a model in which BlsA interacts with and likely sequesters AcoN at this condition, relieving acetoin catabolic genes from repression, and leading to better growth under blue light. This photoregulation depends on temperature, occurring at 23°C but not at 30°C. BlsA is thus a dual regulator, modulating different transcriptional regulators in the dark but also under blue light, representing thus a novel concept. The overall data show that quorum modulators as well as light regulate the acetoin catabolic cluster, providing a better understanding of environmental as well as clinical bacteria.
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Affiliation(s)
- Marisel Romina Tuttobene
- Centro de Estudios Fotosintéticos y Bioquímicos de Rosario (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Laura Fernández-García
- Microbiology Department-Biomedical Research Institute A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Lucía Blasco
- Microbiology Department-Biomedical Research Institute A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Pamela Cribb
- Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET), Rosario, Argentina
| | - Anton Ambroa
- Microbiology Department-Biomedical Research Institute A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Gabriela Leticia Müller
- Centro de Estudios Fotosintéticos y Bioquímicos de Rosario (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Felipe Fernández-Cuenca
- Clinical Unit for Infectious Diseases, Microbiology and Preventive Medicine, Hospital Universitario Virgen Macarena, Seville, Spain.,Department of Microbiology and Medicine, University of Seville, Seville, Spain.,Biomedicine Institute of Seville (IBIS), Seville, Spain
| | - Inés Bleriot
- Centro de Estudios Fotosintéticos y Bioquímicos de Rosario (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | | | - Beatriz G V Barbosa
- Microbial Resistance Laboratory, Biological Sciences Institute, University of Pernambuco (UPE), Recife, Brazil
| | - Rafael Lopez-Rojas
- Clinical Unit for Infectious Diseases, Microbiology and Preventive Medicine, Hospital Universitario Virgen Macarena, Seville, Spain.,Department of Microbiology and Medicine, University of Seville, Seville, Spain.,Biomedicine Institute of Seville (IBIS), Seville, Spain
| | - Rocío Trastoy
- Microbiology Department-Biomedical Research Institute A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - María López
- Microbiology Department-Biomedical Research Institute A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - Germán Bou
- Centro de Estudios Fotosintéticos y Bioquímicos de Rosario (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - María Tomás
- Microbiology Department-Biomedical Research Institute A Coruña (INIBIC), Hospital A Coruña (CHUAC), University of A Coruña (UDC), A Coruña, Spain
| | - María A Mussi
- Centro de Estudios Fotosintéticos y Bioquímicos de Rosario (CEFOBI-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
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20
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Martín-Martín Y, Fernández-García L, Sanchez-Rebato MH, Marí-Buyé N, Rojo FJ, Pérez-Rigueiro J, Ramos M, Guinea GV, Panetsos F, González-Nieto D. Evaluation of Neurosecretome from Mesenchymal Stem Cells Encapsulated in Silk Fibroin Hydrogels. Sci Rep 2019; 9:8801. [PMID: 31217546 PMCID: PMC6584675 DOI: 10.1038/s41598-019-45238-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [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: 01/24/2019] [Accepted: 05/31/2019] [Indexed: 12/13/2022] Open
Abstract
Physical and cognitive disabilities are hallmarks of a variety of neurological diseases. Stem cell-based therapies are promising solutions to neuroprotect and repair the injured brain and overcome the limited capacity of the central nervous system to recover from damage. It is widely accepted that most benefits of different exogenously transplanted stem cells rely on the secretion of different factors and biomolecules that modulate inflammation, cell death and repair processes in the damaged host tissue. However, few cells survive in cerebral tissue after transplantation, diminishing the therapeutic efficacy. As general rule, cell encapsulation in natural and artificial polymers increases the in vivo engraftment of the transplanted cells. However, we have ignored the consequences of such encapsulation on the secretory activity of these cells. In this study, we investigated the biological compatibility between silk fibroin hydrogels and stem cells of mesenchymal origin, a cell population that has gained increasing attention and popularity in regenerative medicine. Although the survival of mesenchymal stem cells was not affected inside hydrogels, this biomaterial format caused adhesion and proliferation deficits and impaired secretion of several angiogenic, chemoattractant and neurogenic factors while concurrently potentiating the anti-inflammatory capacity of this cell population through a massive release of TGF-Beta-1. Our results set a milestone for the exploration of engineering polymers to modulate the secretory activity of stem cell-based therapies for neurological disorders.
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Affiliation(s)
| | | | - Miguel H Sanchez-Rebato
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Neurocomputing and Neurorobotics Research Group: Faculty of Biology and Faculty of Optics, Universidad Complutense de Madrid., Madrid, Spain
- Brain Plasticity Group. Health Research Institute of the Hospital Clínico San Carlos (IdISSC), Madrid, Spain
- GReD, UMR CNRS 6293 - INSERM U1103 - Université Clermont Auvergne, Faculté de Medicine, Clermont-Ferrand, France
| | - Núria Marí-Buyé
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Departamento de Ciencia de Materiales. ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Francisco J Rojo
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Departamento de Ciencia de Materiales. ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - José Pérez-Rigueiro
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Departamento de Ciencia de Materiales. ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Milagros Ramos
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Departamento de Tecnología Fotónica y Bioingeniería. ETSI Telecomunicaciones, Universidad Politécnica de Madrid, Madrid, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Gustavo V Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain
- Departamento de Ciencia de Materiales. ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Fivos Panetsos
- Neurocomputing and Neurorobotics Research Group: Faculty of Biology and Faculty of Optics, Universidad Complutense de Madrid., Madrid, Spain
- Brain Plasticity Group. Health Research Institute of the Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Daniel González-Nieto
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain.
- Departamento de Tecnología Fotónica y Bioingeniería. ETSI Telecomunicaciones, Universidad Politécnica de Madrid, Madrid, Spain.
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), Madrid, Spain.
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Pena RT, Blasco L, Ambroa A, González-Pedrajo B, Fernández-García L, López M, Bleriot I, Bou G, García-Contreras R, Wood TK, Tomás M. Relationship Between Quorum Sensing and Secretion Systems. Front Microbiol 2019; 10:1100. [PMID: 31231316 PMCID: PMC6567927 DOI: 10.3389/fmicb.2019.01100] [Citation(s) in RCA: 137] [Impact Index Per Article: 27.4] [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: 02/20/2019] [Accepted: 04/30/2019] [Indexed: 01/15/2023] Open
Abstract
Quorum sensing (QS) is a communication mechanism between bacteria that allows specific processes to be controlled, such as biofilm formation, virulence factor expression, production of secondary metabolites and stress adaptation mechanisms such as bacterial competition systems including secretion systems (SS). These SS have an important role in bacterial communication. SS are ubiquitous; they are present in both Gram-negative and Gram-positive bacteria and in Mycobacterium sp. To date, 8 types of SS have been described (T1SS, T2SS, T3SS, T4SS, T5SS, T6SS, T7SS, and T9SS). They have global functions such as the transport of proteases, lipases, adhesins, heme-binding proteins, and amidases, and specific functions such as the synthesis of proteins in host cells, adaptation to the environment, the secretion of effectors to establish an infectious niche, transfer, absorption and release of DNA, translocation of effector proteins or DNA and autotransporter secretion. All of these functions can contribute to virulence and pathogenesis. In this review, we describe the known types of SS and discuss the ones that have been shown to be regulated by QS. Due to the large amount of information about this topic in some pathogens, we focus mainly on Pseudomonas aeruginosa and Vibrio spp.
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Affiliation(s)
- Rocio Trastoy Pena
- Deapartamento de Microbiología y Parasitología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica (INIBIC), Universidad de A Coruña (UDC), A Coruña, Spain
| | - Lucia Blasco
- Deapartamento de Microbiología y Parasitología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica (INIBIC), Universidad de A Coruña (UDC), A Coruña, Spain
| | - Antón Ambroa
- Deapartamento de Microbiología y Parasitología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica (INIBIC), Universidad de A Coruña (UDC), A Coruña, Spain
| | - Bertha González-Pedrajo
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Laura Fernández-García
- Deapartamento de Microbiología y Parasitología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica (INIBIC), Universidad de A Coruña (UDC), A Coruña, Spain
| | - Maria López
- Deapartamento de Microbiología y Parasitología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica (INIBIC), Universidad de A Coruña (UDC), A Coruña, Spain
| | - Ines Bleriot
- Deapartamento de Microbiología y Parasitología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica (INIBIC), Universidad de A Coruña (UDC), A Coruña, Spain
| | - German Bou
- Deapartamento de Microbiología y Parasitología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica (INIBIC), Universidad de A Coruña (UDC), A Coruña, Spain
| | - Rodolfo García-Contreras
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Thomas Keith Wood
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA, United States
| | - Maria Tomás
- Deapartamento de Microbiología y Parasitología, Complejo Hospitalario Universitario A Coruña (CHUAC), Instituto de Investigación Biomédica (INIBIC), Universidad de A Coruña (UDC), A Coruña, Spain
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Fernández-García L, Pérez-Mas AM, Álvarez P, Blanco C, Santamaría R, Menéndez R, Granda M. Morphological changes in graphene materials caused by solvents. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.08.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Fernández-García L, Pérez-Rigueiro J, Martinez-Murillo R, Panetsos F, Ramos M, Guinea GV, González-Nieto D. Cortical Reshaping and Functional Recovery Induced by Silk Fibroin Hydrogels-Encapsulated Stem Cells Implanted in Stroke Animals. Front Cell Neurosci 2018; 12:296. [PMID: 30237762 PMCID: PMC6135908 DOI: 10.3389/fncel.2018.00296] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [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: 05/05/2018] [Accepted: 08/16/2018] [Indexed: 01/07/2023] Open
Abstract
The restitution of damaged circuitry and functional remodeling of peri-injured areas constitute two main mechanisms for sustaining recovery of the brain after stroke. In this study, a silk fibroin-based biomaterial efficiently supports the survival of intracerebrally implanted mesenchymal stem cells (mSCs) and increases functional outcomes over time in a model of cortical stroke that affects the forepaw sensory and motor representations. We show that the functional mechanisms underlying recovery are related to a substantial preservation of cortical tissue in the first days after mSCs-polymer implantation, followed by delayed cortical plasticity that involved a progressive functional disconnection between the forepaw sensory (FLs1) and caudal motor (cFLm1) representations and an emergent sensory activity in peri-lesional areas belonging to cFLm1. Our results provide evidence that mSCs integrated into silk fibroin hydrogels attenuate the cerebral damage after brain infarction inducing a delayed cortical plasticity in the peri-lesional tissue, this later a functional change described during spontaneous or training rehabilitation-induced recovery. This study shows that brain remapping and sustained recovery were experimentally favored using a stem cell-biomaterial-based approach.
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Affiliation(s)
| | - José Pérez-Rigueiro
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain,Departamento de Ciencia de Materiales, Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid, Spain,Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine, Madrid, Spain
| | - Ricardo Martinez-Murillo
- Department of Translational Neuroscience, Instituto Cajal – Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Fivos Panetsos
- Neurocomputing and Neurorobotics Research Group, Faculty of Biology and Faculty of Optics, Universidad Complutense de Madrid, Madrid, Spain,Neural Plasticity Research Group, Health Research Institute of the Hospital Clínico San Carlos, Madrid, Spain
| | - Milagros Ramos
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain,Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine, Madrid, Spain,Departamento de Tecnología Fotónica y Bioingeniería, Escuela Técnica Superior de Ingenieros de Telecomunicación, Universidad Politécnica de Madrid, Madrid, Spain
| | - Gustavo V. Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain,Departamento de Ciencia de Materiales, Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid, Spain,Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine, Madrid, Spain
| | - Daniel González-Nieto
- Center for Biomedical Technology, Universidad Politécnica de Madrid, Madrid, Spain,Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine, Madrid, Spain,Departamento de Tecnología Fotónica y Bioingeniería, Escuela Técnica Superior de Ingenieros de Telecomunicación, Universidad Politécnica de Madrid, Madrid, Spain,*Correspondence: Daniel González-Nieto,
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González-Nieto D, Fernández-García L, Pérez-Rigueiro J, Guinea GV, Panetsos F. Hydrogels-Assisted Cell Engraftment for Repairing the Stroke-Damaged Brain: Chimera or Reality. Polymers (Basel) 2018; 10:polym10020184. [PMID: 30966220 PMCID: PMC6415003 DOI: 10.3390/polym10020184] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [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: 12/20/2017] [Revised: 02/06/2018] [Accepted: 02/11/2018] [Indexed: 01/07/2023] Open
Abstract
The use of advanced biomaterials as a structural and functional support for stem cells-based therapeutic implants has boosted the development of tissue engineering applications in multiple clinical fields. In relation to neurological disorders, we are still far from the clinical reality of restoring normal brain function in neurodegenerative diseases and cerebrovascular disorders. Hydrogel polymers show unique mechanical stiffness properties in the range of living soft tissues such as nervous tissue. Furthermore, the use of these polymers drastically enhances the engraftment of stem cells as well as their capacity to produce and deliver neuroprotective and neuroregenerative factors in the host tissue. Along this article, we review past and current trends in experimental and translational research to understand the opportunities, benefits, and types of tentative hydrogel-based applications for the treatment of cerebral disorders. Although the use of hydrogels for brain disorders has been restricted to the experimental area, the current level of knowledge anticipates an intense development of this field to reach clinics in forthcoming years.
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Affiliation(s)
- Daniel González-Nieto
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
- Departamento de Tecnología Fotónica y Bioingeniería, ETSI Telecomunicaciones, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28040 Madrid, Spain.
| | - Laura Fernández-García
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
| | - José Pérez-Rigueiro
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28040 Madrid, Spain.
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid 28040 Madrid, Spain.
| | - Gustavo V Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28040 Madrid, Spain.
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid 28040 Madrid, Spain.
| | - Fivos Panetsos
- Neurocomputing and Neurorobotics Research Group: Faculty of Biology and Faculty of Optics, Universidad Complutense de Madrid, 28040 Madrid, Spain.
- Instituto de Investigación Sanitaria, Hospital Clínico San Carlos Madrid, IdISSC, 28040 Madrid, Spain.
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Vazquez-Moreno J, Yuste-Sanchez V, Sanchez-Hidalgo R, Verdejo R, Lopez-Manchado M, Fernández-García L, Blanco C, Menéndez R. Customizing thermally-reduced graphene oxides for electrically conductive or mechanical reinforced epoxy nanocomposites. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.05.026] [Citation(s) in RCA: 14] [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] [Indexed: 10/19/2022]
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Fernández-García JM, Garro HA, Fernández-García L, García-García P, Fernández-Rodríguez MA, Merino I, Aguilar E. Gold-Catalyzed Cycloisomerizations of Functionalyzed Cyclopropyl Alkynes: the Cases of Carboxamides and Alcohols. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700264] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jesús M. Fernández-García
- Instituto Universitario de Química Organometálica “Enrique Moles”; Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; C/Julián Clavería, 8. 33006 Oviedo Spain
| | - Hugo A. Garro
- Instituto Universitario de Química Organometálica “Enrique Moles”; Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; C/Julián Clavería, 8. 33006 Oviedo Spain
- Área de Química Orgánica; INTEQUI-CONICET-UNSL; 5700 San Luis Argentina
| | - Laura Fernández-García
- Instituto Universitario de Química Organometálica “Enrique Moles”; Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; C/Julián Clavería, 8. 33006 Oviedo Spain
| | - Patricia García-García
- Departamento de Química Orgánica y Química Inorgánica; Universidad de Alcalá; 28871 Alcalá de Henares Madrid Spain
| | - Manuel A. Fernández-Rodríguez
- Área de Química Orgánica, Departamento de Química; Facultad de Ciencias; Universidad de Burgos; Pza. Misael Bañuelos, s/n 09001 Burgos Spain
| | - Isabel Merino
- Unidad de Resonancia Magnética Nuclear; Servicios Científico-Técnicos; Universidad de Oviedo; C/Julián Clavería, 8. 33006 Oviedo Spain
| | - Enrique Aguilar
- Instituto Universitario de Química Organometálica “Enrique Moles”; Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; C/Julián Clavería, 8. 33006 Oviedo Spain
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López M, Mayer C, Fernández-García L, Blasco L, Muras A, Ruiz FM, Bou G, Otero A, Tomás M. Quorum sensing network in clinical strains of A. baumannii: AidA is a new quorum quenching enzyme. PLoS One 2017; 12:e0174454. [PMID: 28328989 PMCID: PMC5362224 DOI: 10.1371/journal.pone.0174454] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 03/09/2017] [Indexed: 12/12/2022] Open
Abstract
Acinetobacter baumannii is an important pathogen that causes nosocomial infections generally associated with high mortality and morbidity in Intensive Care Units (ICUs). Currently, little is known about the Quorum Sensing (QS)/Quorum Quenching (QQ) systems of this pathogen. We analyzed these mechanisms in seven clinical isolates of A. baumannii. Microarray analysis of one of these clinical isolates, Ab1 (A. baumannii ST-2_clon_2010), previously cultured in the presence of 3-oxo-C12-HSL (a QS signalling molecule) revealed a putative QQ enzyme (α/ß hydrolase gene, AidA). This QQ enzyme was present in all non-motile clinical isolates (67% of which were isolated from the respiratory tract) cultured in nutrient depleted LB medium. Interestingly, this gene was not located in the genome of the only motile clinical strain growing in this medium (A. baumannii strain Ab421_GEIH-2010 [Ab7], isolated from a blood sample). The AidA protein expressed in E. coli showed QQ activity. Finally, we observed downregulation of the AidA protein (QQ system attenuation) in the presence of H2O2 (ROS stress). In conclusion, most of the A. baumannii clinical strains were not surface motile (84%) and were of respiratory origin (67%). Only the pilT gene was involved in surface motility and related to the QS system. Finally, a new QQ enzyme (α/ß hydrolase gene, AidA protein) was detected in these strains.
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Affiliation(s)
- María López
- Department of Microbiology, Complejo Hospitalario Universitario A Coruña (CHUAC)-INIBIC, A Coruña, Spain
- Spanish Network for Research in Infectious Diseases (REIPI), Virgen Macarena, Seville, Spain
| | - Celia Mayer
- Department of Microbiology, Faculty of Biology-CIBUS, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Laura Fernández-García
- Department of Microbiology, Complejo Hospitalario Universitario A Coruña (CHUAC)-INIBIC, A Coruña, Spain
| | - Lucía Blasco
- Department of Microbiology, Complejo Hospitalario Universitario A Coruña (CHUAC)-INIBIC, A Coruña, Spain
| | - Andrea Muras
- Department of Microbiology, Faculty of Biology-CIBUS, University of Santiago de Compostela, Santiago de Compostela, Spain
| | | | - German Bou
- Department of Microbiology, Complejo Hospitalario Universitario A Coruña (CHUAC)-INIBIC, A Coruña, Spain
- Spanish Network for Research in Infectious Diseases (REIPI), Virgen Macarena, Seville, Spain
| | - Ana Otero
- Department of Microbiology, Faculty of Biology-CIBUS, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - María Tomás
- Department of Microbiology, Complejo Hospitalario Universitario A Coruña (CHUAC)-INIBIC, A Coruña, Spain
- Spanish Network for Research in Infectious Diseases (REIPI), Virgen Macarena, Seville, Spain
- * E-mail:
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Vega-Mata N, Fernández-García L, Lara-Cardenas C, Raposo-Rodríguez L, Montes-Granda M. [Paediatric pharmacobezoar in vitamin overdose]. CIR CIR 2017; 85 Suppl 1:30-33. [PMID: 28041610 DOI: 10.1016/j.circir.2016.11.012] [Citation(s) in RCA: 2] [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] [Received: 10/07/2015] [Revised: 11/09/2016] [Accepted: 11/25/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND Pharmacobezoars are aggregates of undigested medications that accumulate in the gastrointestinal tract and can cause obstructive or toxic complications. In this paper, the first case is reported of a paediatric pharmacobezoar formation after a vitamin overdose. The objective of this report is to prevent the occurrence of this complication and the action to be taken. CLINIC CASE A 6-year-old child, 6h after ingesting 40 chewable tablets of a hydrophobic vitamin E with high capacity to form a pharmacobezoar, underwent urgent oesophagogastroscopy. A viscoelastic mass of 10×4cm was observed stretching from the cardia to the greater curvature. Seventy-five percent of the mass was removed and the remainder was fragmented, hydrated and aspirated. The patient remains asymptomatic to date. CONCLUSIONS An overdose of hydrophobic drugs can produce a bezoar formation therefore prompt evacuation is recommended with an upper gastrointestinal endoscopy, which is a safe and effective technique in gastric bezoars.
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Affiliation(s)
- Nataliz Vega-Mata
- Servicio de Cirugía Pediátrica, Hospital Universitario Central de Asturias, Oviedo, España.
| | - Laura Fernández-García
- Servicio de Cirugía Pediátrica, Hospital Universitario Central de Asturias, Oviedo, España
| | - Carolina Lara-Cardenas
- Servicio de Cirugía Pediátrica, Hospital Universitario Central de Asturias, Oviedo, España
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Fernández-García L, Blanco M, Blanco C, Álvarez P, Granda M, Santamaría R, Menéndez R. Graphene anchored palladium complex as efficient and recyclable catalyst in the Heck cross-coupling reaction. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.02.023] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bermejo MA, Pereda MJ, Fernández-García L, Rodríguez-Dinten MJ. [Continuous axillary block during surgical replantation of the 1st finger in a catastrophic hand injury]. Rev Esp Anestesiol Reanim 1994; 41:121. [PMID: 8041974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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