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Grandclément C, Estoppey C, Dheilly E, Panagopoulou M, Monney T, Dreyfus C, Loyau J, Labanca V, Drake A, De Angelis S, Rubod A, Frei J, Caro LN, Blein S, Martini E, Chimen M, Matthes T, Kaya Z, Edwards CM, Edwards JR, Menoret E, Kervoelen C, Pellat-Deceunynck C, Moreau P, Mbow ML, Srivastava A, Dyson MR, Zhukovsky EA, Perro M, Sammicheli S. Development of ISB 1442, a CD38 and CD47 bispecific biparatopic antibody innate cell modulator for the treatment of multiple myeloma. Nat Commun 2024; 15:2054. [PMID: 38448430 PMCID: PMC10917784 DOI: 10.1038/s41467-024-46310-y] [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: 07/31/2023] [Accepted: 02/21/2024] [Indexed: 03/08/2024] Open
Abstract
Antibody engineering can tailor the design and activities of therapeutic antibodies for better efficiency or other advantageous clinical properties. Here we report the development of ISB 1442, a fully human bispecific antibody designed to re-establish synthetic immunity in CD38+ hematological malignancies. ISB 1442 consists of two anti-CD38 arms targeting two distinct epitopes that preferentially drive binding to tumor cells and enable avidity-induced blocking of proximal CD47 receptors on the same cell while preventing on-target off-tumor binding on healthy cells. The Fc portion of ISB 1442 is engineered to enhance complement dependent cytotoxicity, antibody dependent cell cytotoxicity and antibody dependent cell phagocytosis. ISB 1442 thus represents a CD47-BsAb combining biparatopic targeting of a tumor associated antigen with engineered enhancement of antibody effector function to overcome potential resistance mechanisms that hamper treatment of myeloma with monospecific anti-CD38 antibodies. ISB 1442 is currently in a Phase I clinical trial in relapsed refractory multiple myeloma.
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Affiliation(s)
| | - C Estoppey
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - E Dheilly
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | | | - T Monney
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - C Dreyfus
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - J Loyau
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - V Labanca
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - A Drake
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - S De Angelis
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - A Rubod
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - J Frei
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - L N Caro
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - S Blein
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - E Martini
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - M Chimen
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - T Matthes
- Haematology Service, Department of Oncology and Clinical Pathology Service, Department of Diagnostics, University Hospital Geneva, 1211, Geneva, Switzerland
| | - Z Kaya
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Institute, University of Oxford, Oxford, UK
| | - C M Edwards
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Institute, University of Oxford, Oxford, UK
| | - J R Edwards
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Institute, University of Oxford, Oxford, UK
| | - E Menoret
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
| | - C Kervoelen
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
| | - C Pellat-Deceunynck
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
- SIRIC ILIAD, Angers, Nantes, France
| | - P Moreau
- Nantes Université, Inserm, CNRS, Université d'Angers, CRCI2NA, Nantes, France
- SIRIC ILIAD, Angers, Nantes, France
- Service d'Hématologie Clinique, Unité d'Investigation Clinique, CHU, Nantes, France
| | - M L Mbow
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - A Srivastava
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - M R Dyson
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - E A Zhukovsky
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland
| | - M Perro
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland.
| | - S Sammicheli
- Ichnos Glenmark Innovation, Lausanne, CH, Switzerland.
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Foulds C, Royston S, Berker T, Nakopoulou E, Bharucha ZP, Robison R, Abram S, Ančić B, Arapostathis S, Badescu G, Bull R, Cohen J, Dunlop T, Dunphy N, Dupont C, Fischer C, Gram-Hanssen K, Grandclément C, Heiskanen E, Labanca N, Jeliazkova M, Jörgens H, Keller M, Kern F, Lombardi P, Mourik R, Ornetzeder M, Pearson PJG, Rohracher H, Sahakian M, Sari R, Standal K, Živčič L. An agenda for future Social Sciences and Humanities research on energy efficiency: 100 priority research questions. Humanit Soc Sci Commun 2022; 9:223. [PMID: 35791377 PMCID: PMC9245879 DOI: 10.1057/s41599-022-01243-z] [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] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
Decades of techno-economic energy policymaking and research have meant evidence from the Social Sciences and Humanities (SSH)-including critical reflections on what changing a society's relation to energy (efficiency) even means-have been underutilised. In particular, (i) the SSH have too often been sidelined and/or narrowly pigeonholed by policymakers, funders, and other decision-makers when driving research agendas, and (ii) the setting of SSH-focused research agendas has not historically embedded inclusive and deliberative processes. The aim of this paper is to address these gaps through the production of a research agenda outlining future SSH research priorities for energy efficiency. A Horizon Scanning exercise was run, which sought to identify 100 priority SSH questions for energy efficiency research. This exercise included 152 researchers with prior SSH expertise on energy efficiency, who together spanned 62 (sub-)disciplines of SSH, 23 countries, and a full range of career stages. The resultant questions were inductively clustered into seven themes as follows: (1) Citizenship, engagement and knowledge exchange in relation to energy efficiency; (2) Energy efficiency in relation to equity, justice, poverty and vulnerability; (3) Energy efficiency in relation to everyday life and practices of energy consumption and production; (4) Framing, defining and measuring energy efficiency; (5) Governance, policy and political issues around energy efficiency; (6) Roles of economic systems, supply chains and financial mechanisms in improving energy efficiency; and (7) The interactions, unintended consequences and rebound effects of energy efficiency interventions. Given the consistent centrality of energy efficiency in policy programmes, this paper highlights that well-developed SSH approaches are ready to be mobilised to contribute to the development, and/or to understand the implications, of energy efficiency measures and governance solutions. Implicitly, it also emphasises the heterogeneity of SSH policy evidence that can be produced. The agenda will be of use for both (1) those new to the energy-SSH field (including policyworkers), for learnings on the capabilities and capacities of energy-SSH, and (2) established energy-SSH researchers, for insights on the collectively held futures of energy-SSH research.
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Affiliation(s)
- Chris Foulds
- Global Sustainability Institute, Anglia Ruskin University, Cambridge, UK
| | - Sarah Royston
- Global Sustainability Institute, Anglia Ruskin University, Cambridge, UK
| | - Thomas Berker
- Department of Interdisciplinary Studies of Culture, Centre for Technology and Society, Norwegian University of Science and Technology, Trondheim, Norway
| | - Efi Nakopoulou
- Department of History and Philosophy of Science, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Rosie Robison
- Global Sustainability Institute, Anglia Ruskin University, Cambridge, UK
| | - Simone Abram
- Department of Anthropology, and Durham Energy Institute, Durham University, Durham, UK
| | - Branko Ančić
- Institute for Social Research in Zagreb, Zagreb, Croatia
| | - Stathis Arapostathis
- Department of History and Philosophy of Science, National and Kapodistrian University of Athens, Athens, Greece
| | - Gabriel Badescu
- Department of Political Sciences, Babeş-Bolyai University of Cluj, Cluj-Napoca, Romania
| | - Richard Bull
- School of Architecture, Design and the Built Environment, Nottingham Trent University, Nottingham, UK
| | - Jed Cohen
- Salt River Project Integrated System Planning & Support, Tempe, AZ USA
| | - Tessa Dunlop
- Unit H1 Knowledge for Policy: Concepts and Methods, European Commission, Directorate-General Joint Research Centre, Ispra, Italy
| | - Niall Dunphy
- School of Engineering and Architecture, and Environmental Research Institute, University College Cork, Cork, Ireland
| | - Claire Dupont
- Department of Public Governance and Management, Ghent University, Ghent, Belgium
| | - Corinna Fischer
- Sustainable Products and Material Flows Division, Oeko-Institut e.V., Darmstadt, Germany
| | - Kirsten Gram-Hanssen
- Department of the Built Environment, Aalborg University Copenhagen, Copenhagen, Denmark
| | - Catherine Grandclément
- Research Group on Energy, Technology and Society, Électricité de France (EDF), Paris, France
| | - Eva Heiskanen
- Centre for Consumer Society Research, University of Helsinki, Helsinki, Finland
| | | | - Maria Jeliazkova
- Department of Public Policies and Social Changes, Institute of Philosophy and Sociology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Helge Jörgens
- Department of Political Science and Public Policy, Iscte—Instituto Universitário de Lisboa, Lisbon, Portugal
| | - Margit Keller
- Institute of Social Studies, University of Tartu, Tartu, Estonia
| | - Florian Kern
- Ecological Economics and Environmental Policy, Institute for Ecological Economy Research, Berlin, Germany
| | - Patrizia Lombardi
- Urban & Regional Inter-university Department, Politecnico di Torino, Turin, Italy
| | | | - Michael Ornetzeder
- Institute of Technology Assessment, Austrian Academy of Sciences, Vienna, Austria
| | - Peter J. G. Pearson
- Centre for Environmental Policy, Imperial College London, London, UK
- School of Architecture, Cardiff University, Cardiff, UK
| | - Harald Rohracher
- Department of Thematic Studies—Technology and Social Change, Linköping University, Linköping, Sweden
| | - Marlyne Sahakian
- Department of Sociology, University of Geneva, Geneva, Switzerland
| | - Ramazan Sari
- Department of Technology, Management and Economics, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Karina Standal
- CICERO—Center for International Climate Research, Oslo, Norway
| | - Lidija Živčič
- Focus Association for Sustainable Development, Ljubljana, Slovenia
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González-Mula A, Lang J, Grandclément C, Naquin D, Ahmar M, Soulère L, Queneau Y, Dessaux Y, Faure D. Lifestyle of the biotroph Agrobacterium tumefaciens in the ecological niche constructed on its host plant. New Phytol 2018; 219:350-362. [PMID: 29701262 DOI: 10.1111/nph.15164] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 01/18/2018] [Accepted: 03/13/2018] [Indexed: 05/23/2023]
Abstract
Agrobacterium tumefaciens constructs an ecological niche in its host plant by transferring the T-DNA from its Ti plasmid into the host genome and by diverting the host metabolism. We combined transcriptomics and genetics for understanding the A. tumefaciens lifestyle when it colonizes Arabidopsis thaliana tumors. Transcriptomics highlighted: a transition from a motile to sessile behavior that mobilizes some master regulators (Hfq, CtrA, DivK and PleD); a remodeling of some cell surface components (O-antigen, succinoglucan, curdlan, att genes, putative fasciclin) and functions associated with plant defense (Ef-Tu and flagellin pathogen-associated molecular pattern-response and glycerol-3-phosphate and nitric oxide signaling); and an exploitation of a wide variety of host resources, including opines, amino acids, sugars, organic acids, phosphate, phosphorylated compounds, and iron. In addition, construction of transgenic A. thaliana lines expressing a lactonase enzyme showed that Ti plasmid transfer could escape host-mediated quorum-quenching. Finally, construction of knock-out mutants in A. tumefaciens showed that expression of some At plasmid genes seemed more costly than the selective advantage they would have conferred in tumor colonization. We provide the first overview of A. tumefaciens lifestyle in a plant tumor and reveal novel signaling and trophic interplays for investigating host-pathogen interactions.
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Affiliation(s)
- Almudena González-Mula
- Institute for Integrative Biology of the Cell (I2BC), CNRS CEA Univ. Paris-Sud, University Paris-Saclay, Gif-sur-Yvette, F-91190, France
| | - Julien Lang
- Institute for Integrative Biology of the Cell (I2BC), CNRS CEA Univ. Paris-Sud, University Paris-Saclay, Gif-sur-Yvette, F-91190, France
| | - Catherine Grandclément
- Institute for Integrative Biology of the Cell (I2BC), CNRS CEA Univ. Paris-Sud, University Paris-Saclay, Gif-sur-Yvette, F-91190, France
| | - Delphine Naquin
- Institute for Integrative Biology of the Cell (I2BC), CNRS CEA Univ. Paris-Sud, University Paris-Saclay, Gif-sur-Yvette, F-91190, France
| | - Mohammed Ahmar
- Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires (ICBMS), INSA-Lyon, Université Lyon 1, CNRS, CPE Lyon, ICBMS, UMR5246, INSA Lyon, Villeurbanne, F-69621, France
| | - Laurent Soulère
- Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires (ICBMS), INSA-Lyon, Université Lyon 1, CNRS, CPE Lyon, ICBMS, UMR5246, INSA Lyon, Villeurbanne, F-69621, France
| | - Yves Queneau
- Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires (ICBMS), INSA-Lyon, Université Lyon 1, CNRS, CPE Lyon, ICBMS, UMR5246, INSA Lyon, Villeurbanne, F-69621, France
| | - Yves Dessaux
- Institute for Integrative Biology of the Cell (I2BC), CNRS CEA Univ. Paris-Sud, University Paris-Saclay, Gif-sur-Yvette, F-91190, France
| | - Denis Faure
- Institute for Integrative Biology of the Cell (I2BC), CNRS CEA Univ. Paris-Sud, University Paris-Saclay, Gif-sur-Yvette, F-91190, France
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Chong TM, Chen JW, See-Too WS, Yu CY, Ang GY, Lim YL, Yin WF, Grandclément C, Faure D, Dessaux Y, Chan KG. Phenotypic and genomic survey on organic acid utilization profile of Pseudomonas mendocina strain S5.2, a vineyard soil isolate. AMB Express 2017; 7:138. [PMID: 28655216 PMCID: PMC5484659 DOI: 10.1186/s13568-017-0437-7] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 06/19/2017] [Indexed: 12/30/2022] Open
Abstract
Root exudates are chemical compounds that are released from living plant roots and provide significant energy, carbon, nitrogen and phosphorus sources for microbes inhabiting the rhizosphere. The exudates shape the microflora associated with the plant, as well as influences the plant health and productivity. Therefore, a better understanding of the trophic link that is established between the plant and the associated bacteria is necessary. In this study, a comprehensive survey on the utilization of grapevine and rootstock related organic acids were conducted on a vineyard soil isolate which is Pseudomonas mendocina strain S5.2. Phenotype microarray analysis has demonstrated that this strain can utilize several organic acids including lactic acid, succinic acid, malic acid, citric acid and fumaric acid as sole growth substrates. Complete genome analysis using single molecule real-time technology revealed that the genome consists of a 5,120,146 bp circular chromosome and a 252,328 bp megaplasmid. A series of genetic determinants associated with the carbon utilization signature of the strain were subsequently identified in the chromosome. Of note, the coexistence of genes encoding several iron-sulfur cluster independent isoenzymes in the genome indicated the importance of these enzymes in the events of iron deficiency. Synteny and comparative analysis have also unraveled the unique features of D-lactate dehydrogenase of strain S5.2 in the study. Collective information of this work has provided insights on the metabolic role of this strain in vineyard soil rhizosphere.
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Affiliation(s)
- Teik Min Chong
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Jian-Woon Chen
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
- UM Omics Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Wah-Seng See-Too
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Choo-Yee Yu
- Integrative Pharmacogenomics Institute (iPROMISE), Universiti Teknologi MARA, 40450 Shah Alam, Selangor Malaysia
| | - Geik-Yong Ang
- Integrative Pharmacogenomics Institute (iPROMISE), Universiti Teknologi MARA, 40450 Shah Alam, Selangor Malaysia
| | - Yan Lue Lim
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Wai-Fong Yin
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Catherine Grandclément
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198 Gif-Sur-Yvette, France
| | - Denis Faure
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198 Gif-Sur-Yvette, France
| | - Yves Dessaux
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198 Gif-Sur-Yvette, France
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
- UM Omics Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Chong TM, Yin WF, Chen JW, Mondy S, Grandclément C, Faure D, Dessaux Y, Chan KG. Comprehensive genomic and phenotypic metal resistance profile of Pseudomonas putida strain S13.1.2 isolated from a vineyard soil. AMB Express 2016; 6:95. [PMID: 27730570 PMCID: PMC5059233 DOI: 10.1186/s13568-016-0269-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 10/04/2016] [Indexed: 11/17/2022] Open
Abstract
Trace metals are required in many cellular processes in bacteria but also induce toxic effects to cells when present in excess. As such, various forms of adaptive responses towards extracellular trace metal ions are essential for the survival and fitness of bacteria in their environment. A soil Pseudomonas putida, strain S13.1.2 has been isolated from French vineyard soil samples, and shown to confer resistance to copper ions. Further investigation revealed a high capacity to tolerate elevated concentrations of various heavy metals including nickel, cobalt, cadmium, zinc and arsenic. The complete genome analysis was conducted using single-molecule real-time (SMRT) sequencing and the genome consisted in a single chromosome at the size of 6.6 Mb. Presence of operons and gene clusters such as cop, cus, czc, nik, and asc systems were detected and accounted for the observed resistance phenotypes. The unique features in terms of specificity and arrangements of some genetic determinants were also highlighted in the study. Our findings has provided insights into the adaptation of this strain to accumulation and persistence of copper and other heavy metals in vineyard soil environment.
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Chan KG, Chong TM, Adrian TGS, Kher HL, Grandclément C, Faure D, Yin WF, Dessaux Y, Hong KW. Pseudomonas lini Strain ZBG1 Revealed Carboxylic Acid Utilization and Copper Resistance Features Required for Adaptation to Vineyard Soil Environment: A Draft Genome Analysis. J Genomics 2016; 4:26-8. [PMID: 27512520 PMCID: PMC4978946 DOI: 10.7150/jgen.16146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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] [Indexed: 11/05/2022] Open
Abstract
Pseudomonas lini strain ZBG1 was isolated from the soil of vineyard in Zellenberg, France and the draft genome was reported in this study. Bioinformatics analyses of the genome revealed presence of genes encoding tartaric and malic acid utilization as well as copper resistance that correspond to the adaptation this strain in vineyard soil environment.
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Affiliation(s)
- Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Teik-Min Chong
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Tan-Guan-Sheng Adrian
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Heng Leong Kher
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Catherine Grandclément
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Denis Faure
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Wai-Fong Yin
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Yves Dessaux
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Kar-Wai Hong
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
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Abstract
All components of the rhizosphere can be engineered to promote plant health and growth, two features that strongly depend upon the interactions of living organisms with their environment. This review describes the progress in plant and microbial molecular genetics and ecology that has led to a wealth of potential applications. Recent efforts especially deal with the plant defense machinery that is instrumental in engineering plant resistance to biotic stresses. Another approach involves microbial population engineering rather than single strain engineering. More generally, the plants (and the associated microbes) are no longer seen as 'individual' but rather as a holobiont, in other words a unit of selection in evolution, a concept that holds great promise for future plant breeding programs.
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Affiliation(s)
- Yves Dessaux
- Institute for Integrative Biology of the Cell (I2BC), Commissariat à l'Energie Atomique (CEA), Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette CEDEX, France.
| | - Catherine Grandclément
- Institute for Integrative Biology of the Cell (I2BC), Commissariat à l'Energie Atomique (CEA), Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette CEDEX, France
| | - Denis Faure
- Institute for Integrative Biology of the Cell (I2BC), Commissariat à l'Energie Atomique (CEA), Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette CEDEX, France
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Grandclément C, Tannières M, Moréra S, Dessaux Y, Faure D. Quorum quenching: role in nature and applied developments. FEMS Microbiol Rev 2015; 40:86-116. [PMID: 26432822 DOI: 10.1093/femsre/fuv038] [Citation(s) in RCA: 338] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/21/2015] [Indexed: 12/11/2022] Open
Abstract
Quorum sensing (QS) refers to the capacity of bacteria to monitor their population density and regulate gene expression accordingly: the QS-regulated processes deal with multicellular behaviors (e.g. growth and development of biofilm), horizontal gene transfer and host-microbe (symbiosis and pathogenesis) and microbe-microbe interactions. QS signaling requires the synthesis, exchange and perception of bacterial compounds, called autoinducers or QS signals (e.g. N-acylhomoserine lactones). The disruption of QS signaling, also termed quorum quenching (QQ), encompasses very diverse phenomena and mechanisms which are presented and discussed in this review. First, we surveyed the QS-signal diversity and QS-associated responses for a better understanding of the targets of the QQ phenomena that organisms have naturally evolved and are currently actively investigated in applied perspectives. Next the mechanisms, targets and molecular actors associated with QS interference are presented, with a special emphasis on the description of natural QQ enzymes and chemicals acting as QS inhibitors. Selected QQ paradigms are detailed to exemplify the mechanisms and biological roles of QS inhibition in microbe-microbe and host-microbe interactions. Finally, some QQ strategies are presented as promising tools in different fields such as medicine, aquaculture, crop production and anti-biofouling area.
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Affiliation(s)
- Catherine Grandclément
- Institut for Integrative Biology of the Cell, Department of Microbiology, CNRS CEA Paris-Sud University, Saclay Plant Sciences, Avenue de la Terrasse, 91198 Gif-sur-Yvette cedex, France
| | - Mélanie Tannières
- Institut for Integrative Biology of the Cell, Department of Microbiology, CNRS CEA Paris-Sud University, Saclay Plant Sciences, Avenue de la Terrasse, 91198 Gif-sur-Yvette cedex, France
| | - Solange Moréra
- Institut for Integrative Biology of the Cell, Department of Structural Biology, CNRS CEA Paris-Sud University, Avenue de la Terrasse, 91198 Gif-sur-Yvette cedex, France
| | - Yves Dessaux
- Institut for Integrative Biology of the Cell, Department of Microbiology, CNRS CEA Paris-Sud University, Saclay Plant Sciences, Avenue de la Terrasse, 91198 Gif-sur-Yvette cedex, France
| | - Denis Faure
- Institut for Integrative Biology of the Cell, Department of Microbiology, CNRS CEA Paris-Sud University, Saclay Plant Sciences, Avenue de la Terrasse, 91198 Gif-sur-Yvette cedex, France
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Viel E, Grandclément C, Vauchy C, Pivot X, Borg C. 662 Neuropilin 2 expression on T CD4+ lymphocytes phenotypic study. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)72369-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Sicard D, Pennings PS, Grandclément C, Acosta J, Kaltz O, Shykoff JA. SPECIALIZATION AND LOCAL ADAPTATION OF A FUNGAL PARASITE ON TWO HOST PLANT SPECIES AS REVEALED BY TWO FITNESS TRAITS. Evolution 2007; 61:27-41. [PMID: 17300425 DOI: 10.1111/j.1558-5646.2007.00003.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We investigate the geographic pattern of adaptation of a fungal parasite, Colletotrichum lindemuthianum, on two host species, Phaseolus vulgaris and P. coccineus for two parasite fitness traits: infectivity (ability to attack a host individual) and aggressivity (degree of sporulation and leaf surface damage). Using a cross-inoculation experiment, we show specialization of the fungus on its host species of origin for both traits even when fungi, which originated from hosts growing in sympatry, were tested on sympatric host populations. Within the two host species, we compared infectivity and aggressivity on local versus allopatric plant-fungus combinations. We found evidence for local adaptation for the two traits on P. vulgaris but not on P. coccineus. There was no significant correlation between the degrees of local adaptation for infectivity and aggressivity, indicating that the genetic basis and the effect of selection may differ between these two traits. For the two fitness traits, a positive correlation between the degree of specialization and the degree of local adaptation was found, suggesting that specialization can be reinforced by local adaptation.
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Affiliation(s)
- Delphine Sicard
- Univ Paris-Sud, Laboratoire Ecologie Systématique et Evolution, UMR 8079, Orsay cedex, France.
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Grandclément C, Thomas G. Detection and analysis of QTLs based on RAPD markers for polygenic resistance to Plasmodiophora brassicae Woron in Brassica oleracea L. Theor Appl Genet 1996; 93:86-90. [PMID: 24162203 DOI: 10.1007/bf00225731] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/1996] [Accepted: 03/08/1996] [Indexed: 06/02/2023]
Abstract
Resistance to Plasmodiophora brassicae Woron, the causal fungus of clubroot, was examined in an F2 population of a cross between a clubroot-resistant kale (Brassica oleracea L. var. acephala) and a susceptible cauliflower (Brassica oleracea L. var. botrytis). QTL detection was performed with RAPD markers. Two resistance notations, carried out at different times after inoculation, were used. Three markers were associated with these two notations and three were specifically linked to only one notation. QTL analysis suggests the existence of at least two genetic mechanisms implicated in the resistance phenomenon.
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Affiliation(s)
- C Grandclément
- , 13 Chemin Desvallières, F-92410, Ville d'Avray, France
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