1
|
Safuta M, Ciesielski A, Samorì P. Controlling the Formation of Electroactive Graphene-Based Cementitious Composites: Towards Structural Health Monitoring of Civil Structures. Chemistry 2023; 29:e202301816. [PMID: 37725392 DOI: 10.1002/chem.202301816] [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: 06/06/2023] [Revised: 09/15/2023] [Accepted: 09/19/2023] [Indexed: 09/21/2023]
Abstract
The development of composites combining multiple components each one imparting a specific function to the ensemble is highly sought after for disruptive applications in chemistry and materials science, with a particular importance for the realization of smart structures. Here, we report on the development of an unprecedented multifunctional cementitious composite incorporating reduced graphene oxide (rGO). By design, this material features significantly enhanced electrical properties while retaining the excellent cement's hydration and microstructure. The multiscale investigation on the chemical and physical properties of the dispersion made it possible to establish an efficient preparation protocol for rGO aqueous dispersion as well as rGO-based cementitious composites using a commercial poly(carboxylate ether)-based superplasticizer. The conduction mechanisms within the matrix of rGO containing mortars were unraveled by electrochemical impedance spectroscopy revealing conductive paths originating from bulk cement matrix and rGO nanosheets in composites with rGO loadings as low as 0.075 wt. %. For this rGO loading, we observed the reduction of the resistivity of bulk cement mortar layers from 18.3 MΩ cm to 2.8 MΩ cm. Moreover, the addition of 0.2 wt. % of rGO resulted in the formation of rGO conductive paths with the resistivity of 51.1 kΩ cm. These findings represent a major step forward towards the practical application of graphene-based materials in structural health monitoring of concrete structures.
Collapse
Affiliation(s)
- Małgorzata Safuta
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
- Department of Structural Engineering, Faculty of Civil Engineering, Silesian University of Technology, Akademicka 5, 44-100, Gliwice, Poland
| | - Artur Ciesielski
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Paolo Samorì
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, CNRS, 8 allée Gaspard Monge, 67000, Strasbourg, France
| |
Collapse
|
2
|
Jallet A, Friedrich A, Schacherer J. Impact of the acquired subgenome on the transcriptional landscape in Brettanomyces bruxellensis allopolyploids. G3 (Bethesda) 2023; 13:jkad115. [PMID: 37226280 PMCID: PMC10320193 DOI: 10.1093/g3journal/jkad115] [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] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/21/2023] [Accepted: 05/18/2023] [Indexed: 05/26/2023]
Abstract
Gene expression variation can provide an overview of the changes in regulatory networks that underlie phenotypic diversity. Certain evolutionary trajectories such as polyploidization events can have an impact on the transcriptional landscape. Interestingly, the evolution of the yeast species Brettanomyces bruxellensis has been punctuated by diverse allopolyploidization events leading to the coexistence of a primary diploid genome associated with various haploid acquired genomes. To assess the impact of these events on gene expression, we generated and compared the transcriptomes of a set of 87 B. bruxellensis isolates, selected as being representative of the genomic diversity of this species. Our analysis revealed that acquired subgenomes strongly impact the transcriptional patterns and allow discrimination of allopolyploid populations. In addition, clear transcriptional signatures related to specific populations have been revealed. The transcriptional variations observed are related to some specific biological processes such as transmembrane transport and amino acids metabolism. Moreover, we also found that the acquired subgenome causes the overexpression of some genes involved in the production of flavor-impacting secondary metabolites, especially in isolates of the beer population.
Collapse
Affiliation(s)
- Arthur Jallet
- CNRS, GMGM UMR 7156, Université de Strasbourg, 67000 Strasbourg, France
| | - Anne Friedrich
- CNRS, GMGM UMR 7156, Université de Strasbourg, 67000 Strasbourg, France
| | - Joseph Schacherer
- CNRS, GMGM UMR 7156, Université de Strasbourg, 67000 Strasbourg, France
- Institut Universitaire de France (IUF), 75005 Paris, France
| |
Collapse
|
3
|
Huang J, Lou Y, Liu J, Bulet P, Cai C, Ma K, Jiao R, Hoffmann JA, Liégeois S, Li Z, Ferrandon D. A Toll pathway effector protects Drosophila specifically from distinct toxins secreted by a fungus or a bacterium. Proc Natl Acad Sci U S A 2023; 120:e2205140120. [PMID: 36917667 PMCID: PMC10041126 DOI: 10.1073/pnas.2205140120] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [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: 03/23/2022] [Accepted: 01/09/2023] [Indexed: 03/16/2023] Open
Abstract
The Drosophila systemic immune response against many Gram-positive bacteria and fungi is mediated by the Toll pathway. How Toll-regulated effectors actually fulfill this role remains poorly understood as the known Toll-regulated antimicrobial peptide (AMP) genes are active only against filamentous fungi and not against Gram-positive bacteria or yeasts. Besides AMPs, two families of peptides secreted in response to infectious stimuli that activate the Toll pathway have been identified, namely Bomanins and peptides derived from a polyprotein precursor known as Baramicin A (BaraA). Unexpectedly, the deletion of a cluster of 10 Bomanins phenocopies the Toll mutant phenotype of susceptibility to infections. Here, we demonstrate that BaraA is required specifically in the host defense against Enterococcus faecalis and against the entomopathogenic fungus Metarhizium robertsii, albeit the fungal burden is not altered in BaraA mutants. BaraA protects the fly from the action of distinct toxins secreted by these Gram-positive and fungal pathogens, respectively, Enterocin V and Destruxin A. The injection of Destruxin A leads to the rapid paralysis of flies, whether wild type (WT) or mutant. However, a larger fraction of wild-type than BaraA flies recovers from paralysis within 5 to 10 h. BaraAs' function in protecting the host from the deleterious action of Destruxin is required in glial cells, highlighting a resilience role for the Toll pathway in the nervous system against microbial virulence factors. Thus, in complement to the current paradigm, innate immunity can cope effectively with the effects of toxins secreted by pathogens through the secretion of dedicated peptides, independently of xenobiotics detoxification pathways.
Collapse
Affiliation(s)
- Jianqiong Huang
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou511436, China
| | - Yanyan Lou
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou511436, China
| | - Jiyong Liu
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou511436, China
| | - Philippe Bulet
- Université Grenoble Alpes, Institute for Advanced Biosciences, INSERM U1209, CNRS, UMR 5309, 38000Grenoble, France
- Platform BioPark Archamps, 74160Archamps, France
| | - Chuping Cai
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou511436, China
- Université de Strasbourg, Faculté des Sciences de la Vie, 67000Strasbourg, France
- Modèles Insectes d'Immunité Innée, Unité Propre de Recherche 9022 du CNRS, Institut de Biologie Moléculaire et Cellulaire du CNRS, 67084Strasbourg, France
| | - Kaiyu Ma
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou511436, China
| | - Renjie Jiao
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou511436, China
| | - Jules A. Hoffmann
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou511436, China
- Université de Strasbourg, Faculté des Sciences de la Vie, 67000Strasbourg, France
- Modèles Insectes d'Immunité Innée, Unité Propre de Recherche 9022 du CNRS, Institut de Biologie Moléculaire et Cellulaire du CNRS, 67084Strasbourg, France
- Université de Strasbourg Institute for Advanced Study, 67000Strasbourg, France
| | - Samuel Liégeois
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou511436, China
- Université de Strasbourg, Faculté des Sciences de la Vie, 67000Strasbourg, France
- Modèles Insectes d'Immunité Innée, Unité Propre de Recherche 9022 du CNRS, Institut de Biologie Moléculaire et Cellulaire du CNRS, 67084Strasbourg, France
| | - Zi Li
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou511436, China
| | - Dominique Ferrandon
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou511436, China
- Université de Strasbourg, Faculté des Sciences de la Vie, 67000Strasbourg, France
- Modèles Insectes d'Immunité Innée, Unité Propre de Recherche 9022 du CNRS, Institut de Biologie Moléculaire et Cellulaire du CNRS, 67084Strasbourg, France
| |
Collapse
|
4
|
Peltier E, Bibi-Triki S, Dutreux F, Caradec C, Friedrich A, Llorente B, Schacherer J. Dissection of quantitative trait loci in the Lachancea waltii yeast species highlights major hotspots. G3 (Bethesda) 2021; 11:jkab242. [PMID: 34544138 PMCID: PMC8496267 DOI: 10.1093/g3journal/jkab242] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 07/06/2021] [Indexed: 11/30/2022]
Abstract
Dissecting the genetic basis of complex trait remains a real challenge. The budding yeast Saccharomyces cerevisiae has become a model organism for studying quantitative traits, successfully increasing our knowledge in many aspects. However, the exploration of the genotype-phenotype relationship in non-model yeast species could provide a deeper insight into the genetic basis of complex traits. Here, we have studied this relationship in the Lachancea waltii species which diverged from the S. cerevisiae lineage prior to the whole-genome duplication. By performing linkage mapping analyses in this species, we identified 86 quantitative trait loci (QTL) impacting the growth in a large number of conditions. The distribution of these loci across the genome has revealed two major QTL hotspots. A first hotspot corresponds to a general growth QTL, impacting a wide range of conditions. By contrast, the second hotspot highlighted a trade-off with a disadvantageous allele for drug-free conditions which proved to be advantageous in the presence of several drugs. Finally, a comparison of the detected QTL in L. waltii with those which had been previously identified for the same trait in a closely related species, Lachancea kluyveri was performed. This analysis clearly showed the absence of shared QTL across these species. Altogether, our results represent a first step toward the exploration of the genetic architecture of quantitative trait across different yeast species.
Collapse
Affiliation(s)
- Emilien Peltier
- Université de Strasbourg, CNRS, GMGM UMR 7156, Strasbourg, France
| | | | - Fabien Dutreux
- Université de Strasbourg, CNRS, GMGM UMR 7156, Strasbourg, France
| | - Claudia Caradec
- Université de Strasbourg, CNRS, GMGM UMR 7156, Strasbourg, France
| | - Anne Friedrich
- Université de Strasbourg, CNRS, GMGM UMR 7156, Strasbourg, France
| | - Bertrand Llorente
- CNRS UMR7258, INSERM U1068, Aix Marseille Université UM105, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Joseph Schacherer
- Université de Strasbourg, CNRS, GMGM UMR 7156, Strasbourg, France
- Institut Universitaire de France (IUF), Paris, France
| |
Collapse
|
5
|
Prakash P, Roychowdhury-Sinha A, Goto A. Verloren negatively regulates the expression of IMD pathway dependent antimicrobial peptides in Drosophila. Sci Rep 2021; 11:15549. [PMID: 34330981 PMCID: PMC8324896 DOI: 10.1038/s41598-021-94973-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 07/16/2021] [Indexed: 11/08/2022] Open
Abstract
Drosophila immune deficiency (IMD) pathway is similar to the human tumor necrosis factor receptor (TNFR) signaling pathway and is preferentially activated by Gram-negative bacterial infection. Recent studies highlighted the importance of IMD pathway regulation as it is tightly controlled by numbers of negative regulators at multiple levels. Here, we report a new negative regulator of the IMD pathway, Verloren (Velo). Silencing of Velo led to constitutive expression of the IMD pathway dependent antimicrobial peptides (AMPs), and Escherichia coli stimulation further enhanced the AMP expression. Epistatic analysis indicated that Velo knock-down mediated AMP upregulation is dependent on the canonical members of the IMD pathway. The immune fluorescent study using overexpression constructs revealed that Velo resides both in the nucleus and cytoplasm, but the majority (~ 75%) is localized in the nucleus. We also observed from in vivo analysis that Velo knock-down flies exhibit significant upregulation of the AMP expression and reduced bacterial load. Survival experiments showed that Velo knock-down flies have a short lifespan and are susceptible to the infection of pathogenic Gram-negative bacteria, P. aeruginosa. Taken together, these data suggest that Velo is an additional new negative regulator of the IMD pathway, possibly acting in both the nucleus and cytoplasm.
Collapse
Affiliation(s)
- Pragya Prakash
- INSERM, Université de Strasbourg, CNRS, Insect Models of Innate Immunity (M3I; UPR9022), 67084, Strasbourg, France
| | | | - Akira Goto
- INSERM, Université de Strasbourg, CNRS, Insect Models of Innate Immunity (M3I; UPR9022), 67084, Strasbourg, France.
- Sino-French Hoffmann Institute, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China.
| |
Collapse
|