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Mosheim JR, Ruggieri F, Humeau C, Hance P, Willand N, Hilbert JL, Heuson E, Froidevaux R. Biocatalytic Regioselective O-acylation of Sesquiterpene Lactones from Chicory: A Pathway to Novel Ester Derivatives. Chembiochem 2024; 25:e202300722. [PMID: 38235523 DOI: 10.1002/cbic.202300722] [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: 12/21/2023] [Accepted: 01/17/2024] [Indexed: 01/19/2024]
Abstract
We report the first biocatalytic modification of sesquiterpene lactones (STLs) found in the chicory plants, specifically lactucin (Lc), 11β,13-dihydrolactucin (DHLc), lactucopicrin (Lp), and 11β,13-dihydrolactucopicrin (DHLp). The selective O-acylation of their primary alcohol group was carried out by the lipase B from Candida antarctica (CAL-B) using various aliphatic vinyl esters as acyl donors. Perillyl alcohol, a simpler monoterpenoid, served as a model to set up the desired O-acetylation reaction by comparing the use of acetic acid and vinyl acetate as acyl donors. Similar conditions were then applied to DHLc, where five novel ester chains were selectively introduced onto the primary alcohol group, with conversions going from >99 % (acetate and propionate) to 69 % (octanoate). The synthesis of the corresponding O-acetyl esters of Lc, Lp, and DHLp was also successfully achieved with near-quantitative conversion. Molecular docking simulations were then performed to elucidate the preferred enzyme-substrate binding modes in the acylation reactions with STLs, as well as to understand their interactions with crucial amino acid residues at the active site. Our methodology enables the selective O-acylation of the primary alcohol group in four different STLs, offering possibilities for synthesizing novel derivatives with significant potential applications in pharmaceuticals or as biocontrol agents.
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Affiliation(s)
- J Rodriguez Mosheim
- Univ. Lille, INRA, ISA, Univ. Artois, Univ. Littoral Côte d'Opale, EA 7394 - Institut Charles Viollette, Lille, France
| | - F Ruggieri
- Univ. Lille, INRA, ISA, Univ. Artois, Univ. Littoral Côte d'Opale, EA 7394 - Institut Charles Viollette, Lille, France
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1177-Drugs and Molecules for Living Systems, F-59000, Lille, France
| | - C Humeau
- Univ. Lorraine, CNRS, UMR 7274 - Laboratoire Réactions et Génie des Procédés, -, F-54000, Nancy, France
| | - P Hance
- Univ. Lille, INRA, ISA, Univ. Artois, Univ. Littoral Côte d'Opale, EA 7394 - Institut Charles Viollette, Lille, France
- Joint Laboratory University of Lille-Florimond-Desprez CHIC41Health, F-59655, Villeuneve d'Ascq, France
| | - N Willand
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1177-Drugs and Molecules for Living Systems, F-59000, Lille, France
| | - J L Hilbert
- Univ. Lille, INRA, ISA, Univ. Artois, Univ. Littoral Côte d'Opale, EA 7394 - Institut Charles Viollette, Lille, France
- Joint Laboratory University of Lille-Florimond-Desprez CHIC41Health, F-59655, Villeuneve d'Ascq, France
| | - E Heuson
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181-UCCS-, Unité de Catalyse et Chimie du Solide, F-59000, Lille, France
| | - R Froidevaux
- Univ. Lille, INRA, ISA, Univ. Artois, Univ. Littoral Côte d'Opale, EA 7394 - Institut Charles Viollette, Lille, France
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Mondemé M, Zeroual Y, Soulard D, Hennart B, Beury D, Saliou JM, Carnoy C, Sirard JC, Faveeuw C. Amoxicillin treatment of pneumococcal pneumonia impacts bone marrow neutrophil maturation and function. J Leukoc Biol 2024; 115:463-475. [PMID: 37837383 DOI: 10.1093/jleuko/qiad125] [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: 07/06/2023] [Revised: 09/08/2023] [Accepted: 09/26/2023] [Indexed: 10/16/2023] Open
Abstract
Pneumonia caused by Streptococcus pneumoniae is a leading cause of death worldwide. A growing body of evidence indicates that the successful treatment of bacterial infections results from synergy between antibiotic-mediated direct antibacterial activity and the host's immune defenses. However, the mechanisms underlying the protective immune responses induced by amoxicillin, a β-lactam antibiotic used as the first-line treatment of S. pneumoniae infections, have not been characterized. A better understanding of amoxicillin's effects on host-pathogen interactions might facilitate the development of other treatment options. Given the crucial role of neutrophils in the control of S. pneumoniae infections, we decided to investigate amoxicillin's impact on neutrophil development in a mouse model of pneumococcal superinfection. A single therapeutic dose of amoxicillin almost completely eradicated the bacteria and prevented local and systemic inflammatory responses. Interestingly, in this context, amoxicillin treatment did not impair the emergency granulopoiesis triggered in the bone marrow by S. pneumoniae. Importantly, treatment of pneumonia with amoxicillin was associated with a greater mature neutrophil count in the bone marrow; these neutrophils had specific transcriptomic and proteomic profiles. Furthermore, amoxicillin-conditioned, mature neutrophils in the bone marrow had a less activated phenotype and might be rapidly mobilized in peripheral tissues in response to systemic inflammation. Thus, by revealing a novel effect of amoxicillin on the development and functions of bone marrow neutrophils during S. pneumoniae pneumonia, our findings provide new insights into the impact of amoxicillin treatment on host immune responses.
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Affiliation(s)
- Mélanie Mondemé
- Université de Lille, CNRS, Inserm, Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, Lille F-59019, France
| | - Yasmine Zeroual
- Université de Lille, CNRS, Inserm, Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, Lille F-59019, France
| | - Daphnée Soulard
- Université de Lille, CNRS, Inserm, Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, Lille F-59019, France
| | - Benjamin Hennart
- Toxicology and Genopathy Unit, Centre Hospitalier Universitaire de Lille, Lille F-59000, France
| | - Delphine Beury
- Université de Lille, CNRS, Inserm, Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, US 41 - UAR 2014 - Plateformes Lilloises de Biologie et Santé, Lille F-59000, France
| | - Jean-Michel Saliou
- Université de Lille, CNRS, Inserm, Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, US 41 - UAR 2014 - Plateformes Lilloises de Biologie et Santé, Lille F-59000, France
| | - Christophe Carnoy
- Université de Lille, CNRS, Inserm, Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, Lille F-59019, France
| | - Jean-Claude Sirard
- Université de Lille, CNRS, Inserm, Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, Lille F-59019, France
| | - Christelle Faveeuw
- Université de Lille, CNRS, Inserm, Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, Lille F-59019, France
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Giraldo C, Cresson P, MacKenzie K, Fontaine V, Loots C, Delegrange A, Lefebvre S. Insights into planktonic food-web dynamics through the lens of size and season. Sci Rep 2024; 14:1684. [PMID: 38243111 PMCID: PMC10798955 DOI: 10.1038/s41598-024-52256-4] [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: 09/12/2023] [Accepted: 01/16/2024] [Indexed: 01/21/2024] Open
Abstract
Knowledge of the trophic structure and variability of planktonic communities is a key factor in understanding food-web dynamics and energy transfer from zooplankton to higher trophic levels. In this study, we investigated how stable isotopes of mesozooplankton species varied seasonally (winter, spring, autumn) in relation to environmental factors and plankton size classes in a temperate coastal ecosystem. Our results showed that spring is characterized by the strongest vertical and size-structured plankton food-web, mainly fueled by the phytoplankton bloom. As a result, spring displayed the largest isotopic niche space and trophic divergence among species. On the contrary, both pelagic and benthic-derived carbon influenced low productive seasons (winter and autumn), resulting in more generalist strategies (trophic redundancy). Stable isotope mixing models were used to explore how different seasonal structures influenced the overall food web up to predatory plankton (i.e., mysids, chaetognaths, and fish larvae). Different feeding strategies were found in spring, with predators having either a clear preference for larger prey items (> 1 mm, for herring and dab larvae) or a more generalist diet (sprat and dragonets larvae). During low productive seasons, predators seemed to be more opportunistic, feeding on a wide range of size classes but focusing on smaller prey. Overall, the food-web architecture of plankton displayed different seasonal patterns linked to components at the base of the food web that shaped the main energy fluxes, either from phytoplankton or recycled material. Additionally, these patterns extended to carnivorous plankton, such as fish larvae, emphasizing the importance of bottom-up processes.
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Affiliation(s)
- Carolina Giraldo
- IFREMER, HMMN - Unité halieutique Manche-Mer du Nord, 62200, Boulogne sur mer, France.
| | - Pierre Cresson
- IFREMER, HMMN - Unité halieutique Manche-Mer du Nord, 62200, Boulogne sur mer, France
| | - Kirsteen MacKenzie
- IFREMER, HMMN - Unité halieutique Manche-Mer du Nord, 62200, Boulogne sur mer, France
| | - Virginie Fontaine
- IFREMER, HMMN - Unité halieutique Manche-Mer du Nord, 62200, Boulogne sur mer, France
- Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, IRD, UMR 8187 - LOG - Laboratoire d'Océanologie et de Géosciences, 59000, Lille, France
| | - Christophe Loots
- IFREMER, HMMN - Unité halieutique Manche-Mer du Nord, 62200, Boulogne sur mer, France
| | - Alice Delegrange
- Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, IRD, UMR 8187 - LOG - Laboratoire d'Océanologie et de Géosciences, 59000, Lille, France
| | - Sébastien Lefebvre
- Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, IRD, UMR 8187 - LOG - Laboratoire d'Océanologie et de Géosciences, 59000, Lille, France
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Jiménez-Castellanos JC, Pradel E, Compagne N, Vieira Da Cruz A, Flipo M, Hartkoorn RC. Characterization of pyridylpiperazine-based efflux pump inhibitors for Acinetobacter baumannii. JAC Antimicrob Resist 2023; 5:dlad112. [PMID: 37881353 PMCID: PMC10594211 DOI: 10.1093/jacamr/dlad112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 09/23/2023] [Indexed: 10/27/2023] Open
Abstract
Objectives In Acinetobacter baumannii, multidrug efflux pumps belonging to the resistance-nodulation-division (RND) superfamily result in decreased antibiotic susceptibility. Improving the activity of current antibiotics via efflux pump inhibitors (EPIs) represents an attractive alternative approach to control this bacterium. Pyridylpiperazines (PyrPips) are a new class of EPIs that can effectively inhibit the Escherichia coli RND efflux pump AcrAB-TolC and boost the activity of several antibiotics. Here we have evaluated and characterized whether the PyrPip chemical family is also able to boost antibiotic activity through inhibition of the RND efflux pumps in A. baumannii. Methods Comparative structural modelling and docking, structure-activity relationship studies alongside molecular genetic approaches were deployed to improve, characterize and validate PyrPips' target. Results We showed that two enhanced PyrPip EPIs are capable of rescuing the activity of different classes of antibiotics in A. baumannii. By expressing A. baumannii main efflux pumps (AdeB, AdeG and AdeJ) individually in E. coli recombinant strains, we could gain further insights about the EPIs' capacity to act upon each pump. Finally, we showed that PyrPip EPIs are mostly acting through AdeJ inhibition via interactions with two key charged residues, namely E959 and E963. Conclusions Our work demonstrates that PyrPip EPIs are capable of inhibiting RND efflux pumps of A. baumannii, and thus may present a promising chemical scaffold for further development.
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Affiliation(s)
- Juan-Carlos Jiménez-Castellanos
- Université de Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019, UMR 9017, CIIL, Center for Infection and Immunity of Lille, F-59000 Lille, France
| | - Elizabeth Pradel
- Université de Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019, UMR 9017, CIIL, Center for Infection and Immunity of Lille, F-59000 Lille, France
| | - Nina Compagne
- Université de Lille, INSERM, Institut Pasteur de Lille, U1177, Drugs and Molecules for Living Systems, F-59000 Lille, France
| | - Anais Vieira Da Cruz
- Université de Lille, INSERM, Institut Pasteur de Lille, U1177, Drugs and Molecules for Living Systems, F-59000 Lille, France
| | - Marion Flipo
- Université de Lille, INSERM, Institut Pasteur de Lille, U1177, Drugs and Molecules for Living Systems, F-59000 Lille, France
| | - Ruben C Hartkoorn
- Université de Lille, CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019, UMR 9017, CIIL, Center for Infection and Immunity of Lille, F-59000 Lille, France
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Loeck T, Rugi M, Todesca LM, Kalinowska P, Soret B, Neumann I, Schimmelpfennig S, Najder K, Pethő Z, Farfariello V, Prevarskaya N, Schwab A. The context-dependent role of the Na +/Ca 2+-exchanger (NCX) in pancreatic stellate cell migration. Pflugers Arch 2023; 475:1225-1240. [PMID: 37566113 PMCID: PMC10499968 DOI: 10.1007/s00424-023-02847-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 06/16/2023] [Revised: 06/16/2023] [Accepted: 07/26/2023] [Indexed: 08/12/2023]
Abstract
Pancreatic stellate cells (PSCs) that can co-metastasize with cancer cells shape the tumor microenvironment (TME) in pancreatic ductal adenocarcinoma (PDAC) by producing an excessive amount of extracellular matrix. This leads to a TME characterized by increased tissue pressure, hypoxia, and acidity. Moreover, cells within the tumor secrete growth factors. The stimuli of the TME trigger Ca2+ signaling and cellular Na+ loading. The Na+/Ca2+ exchanger (NCX) connects the cellular Ca2+ and Na+ homeostasis. The NCX is an electrogenic transporter, which shuffles 1 Ca2+ against 3 Na+ ions over the plasma membrane in a forward or reverse mode. Here, we studied how the impact of NCX activity on PSC migration is modulated by cues from the TME. NCX expression was revealed with qPCR and Western blot. [Ca2+]i, [Na+]i, and the cell membrane potential were determined with the fluorescent indicators Fura-2, Asante NaTRIUM Green-2, and DiBAC4(3), respectively. PSC migration was quantified with live-cell imaging. To mimic the TME, PSCs were exposed to hypoxia, pressure, acidic pH (pH 6.6), and PDGF. NCX-dependent signaling was determined with Western blot analyses. PSCs express NCX1.3 and NCX1.9. [Ca2+]i, [Na+]i, and the cell membrane potential are 94.4 nmol/l, 7.4 mmol/l, and - 39.8 mV, respectively. Thus, NCX1 usually operates in the forward (Ca2+ export) mode. NCX1 plays a differential role in translating cues from the TME into an altered migratory behavior. When NCX1 is operating in the forward mode, its inhibition accelerates PSC migration. Thus, NCX1-mediated extrusion of Ca2+ contributes to a slow mode of migration of PSCs.
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Affiliation(s)
- Thorsten Loeck
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Micol Rugi
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Luca Matteo Todesca
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Paulina Kalinowska
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Benjamin Soret
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
- Université de Lille, Inserm, U1003 - PhyCell - Physiologie Cellulaire, F-59000, Lille, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Ilka Neumann
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Sandra Schimmelpfennig
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Karolina Najder
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Zoltán Pethő
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Valerio Farfariello
- Université de Lille, Inserm, U1003 - PhyCell - Physiologie Cellulaire, F-59000, Lille, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Natalia Prevarskaya
- Université de Lille, Inserm, U1003 - PhyCell - Physiologie Cellulaire, F-59000, Lille, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Albrecht Schwab
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany.
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Fournier M, Leclerc P, Leray A, Champelovier D, Agbazahou F, Dahmani F, Bidaux G, Furlan A, Héliot L. Combined SPT and FCS methods reveal a mechanism of RNAP II oversampling in cell nuclei. Sci Rep 2023; 13:14633. [PMID: 37669988 PMCID: PMC10480184 DOI: 10.1038/s41598-023-38668-8] [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: 01/05/2023] [Accepted: 07/12/2023] [Indexed: 09/07/2023] Open
Abstract
Gene expression orchestration is a key question in fundamental and applied research. Different models for transcription regulation were proposed, yet the dynamic regulation of RNA polymerase II (RNAP II) activity remains a matter of debate. To improve our knowledge of this topic, we investigated RNAP II motility in eukaryotic cells by combining single particle tracking (SPT) and fluorescence correlation spectroscopy (FCS) techniques, to take advantage of their different sensitivities in order to analyze together slow and fast molecular movements. Thanks to calibrated samples, we developed a benchmark for quantitative analysis of molecular dynamics, to eliminate the main potential instrumental biases. We applied this workflow to study the diffusion of RPB1, the catalytic subunit of RNAP II. By a cross-analysis of FCS and SPT, we could highlight different RPB1 motility states and identifyed a stationary state, a slow diffusion state, and two different modes of subdiffusion. Interestingly, our analysis also unveiled the oversampling by RPB1 of nuclear subdomains. Based on these data, we propose a novel model of spatio-temporal transcription regulation. Altogether, our results highlight the importance of combining microscopy approaches at different time scales to get a full insight into the real complexity of molecular kinetics in cells.
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Affiliation(s)
- Marie Fournier
- Univ. Lille, CNRS, UMR 8523, PhLAM Laboratoire de Physique des Lasers, Atomes et Molécules, Lille, France
- CNRS, Groupement de Recherche ImaBio, 59655, Villeneuve d'Ascq, France
| | - Pierre Leclerc
- Univ. Lille, CNRS, UMR 8523, PhLAM Laboratoire de Physique des Lasers, Atomes et Molécules, Lille, France
- CNRS, Groupement de Recherche ImaBio, 59655, Villeneuve d'Ascq, France
| | - Aymeric Leray
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS, Université de Bourgogne Franche Comte, Dijon, France
- CNRS, Groupement de Recherche ImaBio, 59655, Villeneuve d'Ascq, France
| | - Dorian Champelovier
- Univ. Lille, CNRS, UMR 8523, PhLAM Laboratoire de Physique des Lasers, Atomes et Molécules, Lille, France
- CNRS, Groupement de Recherche ImaBio, 59655, Villeneuve d'Ascq, France
| | - Florence Agbazahou
- Univ. Lille, CNRS, UMR 8523, PhLAM Laboratoire de Physique des Lasers, Atomes et Molécules, Lille, France
- CNRS, Groupement de Recherche ImaBio, 59655, Villeneuve d'Ascq, France
| | - Fatima Dahmani
- Univ. Lille, CNRS, UMR 8523, PhLAM Laboratoire de Physique des Lasers, Atomes et Molécules, Lille, France
- CNRS, Groupement de Recherche ImaBio, 59655, Villeneuve d'Ascq, France
| | - Gabriel Bidaux
- INSERM UMR 1060, CarMeN Laboratory, IHU OPERA, Hôpital Louis Pradel, Hospices Civils de Lyon, Univ Lyon1, Lyon, France
- CNRS, Groupement de Recherche ImaBio, 59655, Villeneuve d'Ascq, France
| | - Alessandro Furlan
- Univ. Lille, CNRS, UMR 8523, PhLAM Laboratoire de Physique des Lasers, Atomes et Molécules, Lille, France.
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277 -CANTHER -Cancer Heterogeneity Plasticity and Resistance to Therapies, Lille, 59000, France.
- Unité Tumorigenèse et Résistance aux Traitements, Centre Oscar Lambret, 59000, Lille, France.
- CNRS, Groupement de Recherche ImaBio, 59655, Villeneuve d'Ascq, France.
| | - Laurent Héliot
- Univ. Lille, CNRS, UMR 8523, PhLAM Laboratoire de Physique des Lasers, Atomes et Molécules, Lille, France.
- CNRS, Groupement de Recherche ImaBio, 59655, Villeneuve d'Ascq, France.
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Bachaud L, Johns SE. The use and misuse of evolutionary psychology in online manosphere communities: The case of female mating strategies. Evol Hum Sci 2023; 5:e28. [PMID: 37901586 PMCID: PMC10600567 DOI: 10.1017/ehs.2023.22] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/18/2023] [Accepted: 08/09/2023] [Indexed: 10/31/2023] Open
Abstract
While early evolutionary accounts of female sexuality insisted on coyness and monogamous tendencies, evidence from the field of primatology started challenging those assumptions in the 1970s. Decades later, there exist many competing and overlapping hypotheses stressing the potential fitness benefits of female short-term and extra-pair mating. Female mammals are now seen as enacting varied and flexible reproductive strategies. This is both a victory for science, with a better fit between theory and reality, and for feminism, with the downfall of narrow stereotypes about female sexuality. However, evolutionary hypotheses on female mating strategies are routinely invoked among the antifeminist online communities collectively known as 'the manosphere'. Based on extensive qualitative analysis of manosphere discourse, this study shows how these hypotheses are sometimes interpreted in misogynistic online spaces. Indeed, evolutionary scholars might be surprised to see sexist worldviews reinforced by the 'dual mating strategy' and 'sexy son' hypotheses, or by the latest research on the ovulatory cycle. The manosphere has its own version of evolutionary psychology, mingling cutting-edge scientific theories and hypotheses with personal narratives, sexual double standards and misogynistic beliefs. After analysing this phenomenon, this article suggests ways to mitigate it.
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Affiliation(s)
- Louis Bachaud
- School of Anthropology and Conservation, University of Kent, Canterbury, Kent, UK
- Laboratoire CECILLE, Université de Lille, Lille, France
| | - Sarah E. Johns
- School of Anthropology and Conservation, University of Kent, Canterbury, Kent, UK
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Laguillaumie MO, Lewuillon C, Touil Y, Lemonnier L, Idziorek T. [Lethal AML? Calcium signalling to the rescue!]. Med Sci (Paris) 2023; 39:515-521. [PMID: 37387659 DOI: 10.1051/medsci/2023083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023] Open
Abstract
Acute myeloid leukemia (AML) is characterized by genetic aberrations in hematopoietic precursors of the myeloid lineage which lead to their defective maturation/function. While intensive chemotherapy protocols result in complete remission in 50 % to 80 % of AML patients, relapse occurs in the majority of cases. While calcium signalling is a well-known contributor to cancer hallmarks, few AML related studies have focused on relevant calcium targets. Our purpose here is to highlight calcium channels and associated signalling pathways involved in AML, in order to promote the development of treatments specifically targeting these pathways.
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Affiliation(s)
- Marie-Océane Laguillaumie
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277 - CANTHER - Cancer Heterogeneity Plasticity and Resistance to Therapies, F-59000 Lille, France
| | - Clara Lewuillon
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277 - CANTHER - Cancer Heterogeneity Plasticity and Resistance to Therapies, F-59000 Lille, France
| | - Yasmine Touil
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277 - CANTHER - Cancer Heterogeneity Plasticity and Resistance to Therapies, F-59000 Lille, France
| | - Loïc Lemonnier
- Univ. Lille, Inserm, U1003 - PHYCEL - physiologie cellulaire, F-59000 Lille, France - Univ. Lille, laboratoire d'excellence, Ion Channels Science and Therapeutics, F-59655 Villeneuve d'Ascq, France
| | - Thierry Idziorek
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277 - CANTHER - Cancer Heterogeneity Plasticity and Resistance to Therapies, F-59000 Lille, France
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Garnier N, Sane F, Massara L, Soncin F, Gosset P, Hober D, Szunerits S, Engelmann I. Genes Involved in miRNA Biogenesis Are Not Downregulated in SARS-CoV-2 Infection. Viruses 2023; 15:v15051177. [PMID: 37243263 DOI: 10.3390/v15051177] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 04/21/2023] [Revised: 05/11/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023] Open
Abstract
miRNAs, small non-coding RNAs that regulate gene expression, are involved in various pathological processes, including viral infections. Virus infections may interfere with the miRNA pathway through the inhibition of genes involved in miRNA biogenesis. A reduction in the number and the levels of miRNAs expressed in nasopharyngeal swabs of patients with severe COVID-19 was lately observed by us, pointing towards the potential of miRNAs as possible diagnostic or prognostic biomarkers for predicting outcomes among patients with severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection. The objective of the present study was to investigate whether SARS-CoV-2 infection influences the expression levels of messenger RNAs (mRNAs) of key genes involved in miRNA biogenesis. mRNA levels of AGO2, DICER1, DGCR8, DROSHA, and Exportin-5 (XPO5) were measured by quantitative reverse-transcription polymerase chain reaction (RT-qPCR) in nasopharyngeal swab specimens from patients with COVID-19 and controls, as well as in cells infected with SARS-CoV-2 in vitro. Our data showed that the mRNA expression levels of AGO2, DICER1, DGCR8, DROSHA, and XPO5 were not significantly different in patients with severe COVID-19 when compared to patients with non-severe COVID-19 and controls. Similarly, the mRNA expression of these genes was not affected by SARS-CoV-2 infection in NHBE and Calu-3 cells. However, in Vero E6 cells, AGO2, DICER1, DGCR8, and XPO5 mRNA levels were slightly upregulated 24 h after infection with SARS-CoV-2. In conclusion, we did not find evidence for downregulation of mRNA levels of miRNA biogenesis genes during SARS-CoV-2 infection, neither ex vivo nor in vitro.
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Affiliation(s)
- Nathalie Garnier
- Laboratoire de Virologie ULR3610, University Lille and CHU Lille, F-59000 Lille, France
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520, IEMN, F-59000 Lille, France
| | - Famara Sane
- Laboratoire de Virologie ULR3610, University Lille and CHU Lille, F-59000 Lille, France
| | - Layal Massara
- CNRS UMR 9017, Inserm U1019, CHU Lille, Institut Pasteur de Lille, CIIL-OpInfIELD, University Lille, F-59000 Lille, France
| | - Fabrice Soncin
- CNRS/IIS/Centre Oscar Lambret/Lille University SMMiL-E Project, CNRS Délégation Hauts-de-France, F-59000 Lille, France
- Laboratory for Integrated Micro Mechatronic Systems, Institute of Industrial Science, University of Tokyo, CNRS IRL2820, Tokyo 113-0033, Japan
| | - Philippe Gosset
- CNRS UMR 9017, Inserm U1019, CHU Lille, Institut Pasteur de Lille, CIIL-OpInfIELD, University Lille, F-59000 Lille, France
| | - Didier Hober
- Laboratoire de Virologie ULR3610, University Lille and CHU Lille, F-59000 Lille, France
| | - Sabine Szunerits
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520, IEMN, F-59000 Lille, France
| | - Ilka Engelmann
- Laboratoire de Virologie ULR3610, University Lille and CHU Lille, F-59000 Lille, France
- PCCEI, University Montpellier, INSERM, EFS, CHU Montpellier, F-34000 Montpellier, France
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10
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Rigolot V, Rossez Y, Biot C, Lion C. A bioorthogonal chemistry approach to detect the K1 polysialic acid capsule in Escherichia coli. RSC Chem Biol 2023; 4:173-183. [PMID: 36794016 PMCID: PMC9906323 DOI: 10.1039/d2cb00219a] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022] Open
Abstract
Most Escherichia coli strains associated with neonatal meningitis express the K1 capsule, a sialic acid polysaccharide that is directly related to their pathogenicity. Metabolic oligosaccharide engineering (MOE) has mostly been developed in eukaryotes, but has also been successfully applied to the study of several oligosaccharides or polysaccharides constitutive of the bacterial cell wall. However, bacterial capsules are seldom targeted despite their important role as virulence factors, and the K1 polysialic acid (PSA) antigen that shields bacteria from the immune system still remains untackled. Herein, we report a fluorescence microplate assay that allows the fast and facile detection of K1 capsules with an approach that combines MOE and bioorthogonal chemistry. We exploit the incorporation of synthetic analogues of N-acetylmannosamine or N-acetylneuraminic acid, metabolic precursors of PSA, and copper-catalysed azide-alkyne cycloaddition (CuAAC) as the click chemistry reaction to specifically label the modified K1 antigen with a fluorophore. The method was optimized, validated by capsule purification and fluorescence microscopy, and applied to the detection of whole encapsulated bacteria in a miniaturized assay. We observe that analogues of ManNAc are readily incorporated into the capsule while those of Neu5Ac are less efficiently metabolized, which provides useful information regarding the capsule biosynthetic pathways and the promiscuity of the enzymes involved. Moreover, this microplate assay is transferable to screening approaches and may provide a platform to identify novel capsule-targeted antibiotics that would circumvent resistance issues.
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Affiliation(s)
- Vincent Rigolot
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle Lille France
| | - Yannick Rossez
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle Lille France
| | - Christophe Biot
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle Lille France
| | - Cédric Lion
- Univ. Lille, CNRS, UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle Lille France
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11
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Mound A, Goormachtigh G, Bray F, Flament S, Rolando C, Ruez R, Martin N, Decourcelle A, Dehennaut V, Saliou JM, Chamaillard M, Abbadie C. The NLRP6 protein is very faintly expressed in several normal and cancerous epithelial cells and may be confused with an unrelated protein. PLoS One 2023; 18:e0279028. [PMID: 36662875 PMCID: PMC9858803 DOI: 10.1371/journal.pone.0279028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 11/28/2022] [Indexed: 01/21/2023] Open
Abstract
Nod-Like Receptor Pyrin domain-containing protein 6 (NLRP6), a member of the Nucleotide-oligomerization domain-Like Receptor (NLR) family of proteins, assembles together with the ASC protein to form an inflammasome upon stimulation by bacterial lipoteichoic acid and double-stranded DNA. Besides its expression in myeloid cells, NLRP6 is also expressed in intestinal epithelial cells where it may contribute to the maintenance of gut homeostasis and negatively controls colorectal tumorigenesis. Here, we report that NLRP6 is very faintly expressed in several colon cancer cell lines, detected only in cytoplasmic small dots were it colocalizes with ASC. Consequently, it is very hardly detected by standard western-blotting techniques by several presently available commercial antibodies which, in contrast, highly cross-react with a protein of 90kDa that we demonstrate to be unrelated to NLRP6. We report here these results to caution the community not to confuse the 90kDa protein with the endogenous human NLRP6.
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Affiliation(s)
- Abdallah Mound
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277—CANTHER—Cancer Heterogeneity Plasticity and Resistance to Therapies, Lille, France
| | - Gautier Goormachtigh
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277—CANTHER—Cancer Heterogeneity Plasticity and Resistance to Therapies, Lille, France
| | - Fabrice Bray
- Univ. Lille, CNRS, USR 3290—MSAP—Miniaturization for Synthesis, Analysis & Proteomics, Lille, France
| | - Stéphanie Flament
- Univ. Lille, CNRS, USR 3290—MSAP—Miniaturization for Synthesis, Analysis & Proteomics, Lille, France
| | - Christian Rolando
- Univ. Lille, CNRS, USR 3290—MSAP—Miniaturization for Synthesis, Analysis & Proteomics, Lille, France
- Shrieking Sixties, Villeneuve-d’Ascq, France
| | - Richard Ruez
- Univ. Lille, Inserm, U1003 –PhyCell–Laboratoire de Physiologie Cellulaire, Lille, France
| | - Nathalie Martin
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277—CANTHER—Cancer Heterogeneity Plasticity and Resistance to Therapies, Lille, France
| | - Amélie Decourcelle
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277—CANTHER—Cancer Heterogeneity Plasticity and Resistance to Therapies, Lille, France
| | - Vanessa Dehennaut
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277—CANTHER—Cancer Heterogeneity Plasticity and Resistance to Therapies, Lille, France
| | - Jean-Michel Saliou
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, US 41 –UMS2014 –PLBS, Lille, France
| | - Mathias Chamaillard
- Univ. Lille, Inserm, U1003 –PhyCell–Laboratoire de Physiologie Cellulaire, Lille, France
| | - Corinne Abbadie
- Univ. Lille, CNRS, Inserm, CHU Lille, UMR9020-U1277—CANTHER—Cancer Heterogeneity Plasticity and Resistance to Therapies, Lille, France
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12
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Locht C, Carbonetti NH, Cherry JD, Damron FH, Edwards KM, Fernandez R, Harvill ET, Hozbor D, Mills KHG, Rodriguez ME, Mascart F. Highlights of the 12th International Bordetella Symposium. Clin Infect Dis 2020; 71:2521-2526. [PMID: 32463883 PMCID: PMC7713684 DOI: 10.1093/cid/ciaa651] [Citation(s) in RCA: 4] [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: 03/12/2020] [Accepted: 05/22/2020] [Indexed: 11/13/2022] Open
Abstract
To commemorate the 100th anniversary of the Nobel prize being awarded to Jules Bordet, the discoverer of Bordetella pertussis, the 12th International Bordetella Symposium was held from 9 to 12 April 2019 at the Université Libre de Bruxelles, where Jules Bordet studied and was Professor of Microbiology. The symposium attracted more than 300 Bordetella experts from 34 countries. They discussed the latest epidemiologic data and clinical aspects of pertussis, Bordetella biology and pathogenesis, immunology and vaccine development, and genomics and evolution. Advanced technological and methodological tools provided novel insights into the genomic diversity of Bordetella and a better understanding of pertussis disease and vaccine performance. New molecular approaches revealed previously unrecognized complexity of virulence gene regulation. Innovative insights into the immune responses to infection by Bordetella resulted in the development of new vaccine candidates. Such discoveries will aid in the design of more effective approaches to control pertussis and other Bordetella-related diseases.
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Affiliation(s)
- Camille Locht
- Université Lille, Centre National de la Recherche Scientifique, Inserm, Centre Hospitalier Universitaire Lille, Institut Pasteur de Lille, U1019, Unité Mixte de Recherche 8204, Center for Infection and Immunity of Lille, Lille, France
| | - Nicholas H Carbonetti
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - James D Cherry
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - F Heath Damron
- Department of Microbiology, Immunology and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Science Center, West Virginia University, Morgantown, West Virginia, USA
| | - Kathryn M Edwards
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Rachel Fernandez
- Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Eric T Harvill
- Department of Infectious Diseases, College of Veterinary Sciences, University of Georgia, Athens, Georgia, USA
| | - Daniela Hozbor
- Laboratorio VacSal, Instituto de Biotecnología y Biología Molecular, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Consejo Nacional de Investigaciones Cientificas y Técnicas, La Plata, Argentina
| | - Kingston H G Mills
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Maria Eugenia Rodriguez
- Centro de Investigacion y Desarrollo en Fermentaciones Industriales, Consejo Nacional de Investigaciones Cientificas y Técnicas, La Plata, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Françoise Mascart
- Laboratory of Vaccinology and Mucosal Immunity, Université Libre de Bruxelles, Brussels, Belgium
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13
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Beji S, Fontaine V, Devaux R, Thomas M, Negro SS, Bahrman N, Siol M, Aubert G, Burstin J, Hilbert JL, Delbreil B, Lejeune-Hénaut I. Genome-wide association study identifies favorable SNP alleles and candidate genes for frost tolerance in pea. BMC Genomics 2020; 21:536. [PMID: 32753054 PMCID: PMC7430820 DOI: 10.1186/s12864-020-06928-w] [Citation(s) in RCA: 16] [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: 08/09/2019] [Accepted: 07/20/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Frost is a limiting abiotic stress for the winter pea crop (Pisum sativum L.) and identifying the genetic determinants of frost tolerance is a major issue to breed varieties for cold northern areas. Quantitative trait loci (QTLs) have previously been detected from bi-parental mapping populations, giving an overview of the genome regions governing this trait. The recent development of high-throughput genotyping tools for pea brings the opportunity to undertake genetic association studies in order to capture a higher allelic diversity within large collections of genetic resources as well as to refine the localization of the causal polymorphisms thanks to the high marker density. In this study, a genome-wide association study (GWAS) was performed using a set of 365 pea accessions. Phenotyping was carried out by scoring frost damages in the field and in controlled conditions. The association mapping collection was also genotyped using an Illumina Infinium® BeadChip, which allowed to collect data for 11,366 single nucleotide polymorphism (SNP) markers. RESULTS GWAS identified 62 SNPs significantly associated with frost tolerance and distributed over six of the seven pea linkage groups (LGs). These results confirmed 3 QTLs that were already mapped in multiple environments on LG III, V and VI with bi-parental populations. They also allowed to identify one locus, on LG II, which has not been detected yet and two loci, on LGs I and VII, which have formerly been detected in only one environment. Fifty candidate genes corresponding to annotated significant SNPs, or SNPs in strong linkage disequilibrium with the formers, were found to underlie the frost damage (FD)-related loci detected by GWAS. Additionally, the analyses allowed to define favorable haplotypes of markers for the FD-related loci and their corresponding accessions within the association mapping collection. CONCLUSIONS This study led to identify FD-related loci as well as corresponding favorable haplotypes of markers and representative pea accessions that might to be used in winter pea breeding programs. Among the candidate genes highlighted at the identified FD-related loci, the results also encourage further attention to the presence of C-repeat Binding Factors (CBF) as potential genetic determinants of the frost tolerance locus on LG VI.
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Affiliation(s)
- Sana Beji
- BioEcoAgro, INRAE, Univ. Liège, Univ. Lille, Univ. Picardie Jules Verne, 2, Chaussée Brunehaut, F-80203 Estrées-Mons, France
| | - Véronique Fontaine
- BioEcoAgro, INRAE, Univ. Liège, Univ. Lille, Univ. Picardie Jules Verne, 2, Chaussée Brunehaut, F-80203 Estrées-Mons, France
| | | | | | - Sandra Silvia Negro
- GQE - Le Moulon, INRAE, Univ. Paris-Sud, CNRS, AgroParisTech, Univ. Paris-Saclay, F-91190 Gif-sur-Yvette, France
| | - Nasser Bahrman
- BioEcoAgro, INRAE, Univ. Liège, Univ. Lille, Univ. Picardie Jules Verne, 2, Chaussée Brunehaut, F-80203 Estrées-Mons, France
| | - Mathieu Siol
- Agroécologie, AgroSup Dijon, INRAE, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Grégoire Aubert
- Agroécologie, AgroSup Dijon, INRAE, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Judith Burstin
- Agroécologie, AgroSup Dijon, INRAE, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Jean-Louis Hilbert
- BioEcoAgro, INRAE, Univ. Liège, Univ. Lille, Univ. Picardie Jules Verne, 2, Chaussée Brunehaut, F-80203 Estrées-Mons, France
| | - Bruno Delbreil
- BioEcoAgro, INRAE, Univ. Liège, Univ. Lille, Univ. Picardie Jules Verne, 2, Chaussée Brunehaut, F-80203 Estrées-Mons, France
| | - Isabelle Lejeune-Hénaut
- BioEcoAgro, INRAE, Univ. Liège, Univ. Lille, Univ. Picardie Jules Verne, 2, Chaussée Brunehaut, F-80203 Estrées-Mons, France
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14
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Dalko E, Tchitchek N, Pays L, Herbert F, Cazenave PA, Ravindran B, Sharma S, Nataf S, Das B, Pied S. Erythropoietin Levels Increase during Cerebral Malaria and Correlate with Heme, Interleukin-10 and Tumor Necrosis Factor-Alpha in India. PLoS One 2016; 11:e0158420. [PMID: 27441662 PMCID: PMC4956275 DOI: 10.1371/journal.pone.0158420] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 06/15/2016] [Indexed: 12/12/2022] Open
Abstract
Cerebral malaria (CM) caused by Plasmodium falciparum parasites often leads to the death of infected patients or to persisting neurological sequelae despite anti-parasitic treatments. Erythropoietin (EPO) was recently suggested as a potential adjunctive treatment for CM. However diverging results were obtained in patients from Sub-Saharan countries infected with P. falciparum. In this study, we measured EPO levels in the plasma of well-defined groups of P. falciparum-infected patients, from the state of Odisha in India, with mild malaria (MM), CM, or severe non-CM (NCM). EPO levels were then correlated with biological parameters, including parasite biomass, heme, tumor necrosis factor (TNF)-α, interleukin (IL)-10, interferon gamma-induced protein (IP)-10, and monocyte chemoattractant protein (MCP)-1 plasma concentrations by Spearman’s rank and multiple correlation analyses. We found a significant increase in EPO levels with malaria severity degree, and more specifically during fatal CM. In addition, EPO levels were also found correlated positively with heme, TNF-α, IL-10, IP-10 and MCP-1 during CM. We also found a significant multivariate correlation between EPO, TNF-α, IL-10, IP-10 MCP-1 and heme, suggesting an association of EPO with a network of immune factors in CM patients. The contradictory levels of circulating EPO reported in CM patients in India when compared to Africa highlights the need for the optimization of adjunctive treatments according to the targeted population.
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Affiliation(s)
- Esther Dalko
- Centre for Infection and Immunity of Lille, INSERM U1019, CNRS UMR 8204, Université Lille Nord de France, Institut Pasteur de Lille, Lille 59019, France
| | - Nicolas Tchitchek
- CEA, DSV/iMETI, Immunology of viral infections and autoimmune diseases research unit, UMR1184, IDMIT infrastructure, Fontenay-aux-Roses, France
| | - Laurent Pays
- Lyon 1 University, CarMeN Laboratory, INSERM U-1060, INRA USC-1235, 69921, Oullins, France; Banque de Tissus et de Cellules des Hospices Civils de Lyon, Hôpital Edouard Herriot, Lyon, France
| | - Fabien Herbert
- Centre for Infection and Immunity of Lille, INSERM U1019, CNRS UMR 8204, Université Lille Nord de France, Institut Pasteur de Lille, Lille 59019, France
| | - Pierre-André Cazenave
- Centre for Infection and Immunity of Lille, INSERM U1019, CNRS UMR 8204, Université Lille Nord de France, Institut Pasteur de Lille, Lille 59019, France
| | | | - Shobhona Sharma
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, Maharashtra 400005, India
| | - Serge Nataf
- Lyon 1 University, CarMeN Laboratory, INSERM U-1060, INRA USC-1235, 69921, Oullins, France; Banque de Tissus et de Cellules des Hospices Civils de Lyon, Hôpital Edouard Herriot, Lyon, France
| | - Bidyut Das
- SCB Medical College, Cuttack, Odisha 753007, India
| | - Sylviane Pied
- Centre for Infection and Immunity of Lille, INSERM U1019, CNRS UMR 8204, Université Lille Nord de France, Institut Pasteur de Lille, Lille 59019, France
- * E-mail:
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