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Desmet SJ, Thommis J, Vanderhaeghen T, Vandenboorn EMF, Clarisse D, Li Y, Timmermans S, Fijalkowska D, Ratman D, Van Hamme E, De Cauwer L, Staels B, Brunsveld L, Peelman F, Libert C, Tavernier J, De Bosscher K. Crosstalk interactions between transcription factors ERRα and PPARα assist PPARα-mediated gene expression. Mol Metab 2024; 84:101938. [PMID: 38631478 PMCID: PMC11059514 DOI: 10.1016/j.molmet.2024.101938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/10/2024] [Accepted: 04/09/2024] [Indexed: 04/19/2024] Open
Abstract
OBJECTIVE The peroxisome proliferator-activated receptor α (PPARα) is a transcription factor driving target genes involved in fatty acid β-oxidation. To what extent various PPARα interacting proteins may assist its function as a transcription factor is incompletely understood. An ORFeome-wide unbiased mammalian protein-protein interaction trap (MAPPIT) using PPARα as bait revealed a PPARα-ligand-dependent interaction with the orphan nuclear receptor estrogen-related receptor α (ERRα). The goal of this study was to characterize the nature of the interaction in depth and to explore whether it was of physiological relevance. METHODS We used orthogonal protein-protein interaction assays and pharmacological inhibitors of ERRα in various systems to confirm a functional interaction and study the impact of crosstalk mechanisms. To characterize the interaction surfaces and contact points we applied a random mutagenesis screen and structural overlays. We pinpointed the extent of reciprocal ligand effects of both nuclear receptors via coregulator peptide recruitment assays. On PPARα targets revealed from a genome-wide transcriptome analysis, we performed an ERRα chromatin immunoprecipitation analysis on both fast and fed mouse livers. RESULTS Random mutagenesis scanning of PPARα's ligand-binding domain and coregulator profiling experiments supported the involvement of (a) bridging coregulator(s), while recapitulation of the interaction in vitro indicated the possibility of a trimeric interaction with RXRα. The PPARα·ERRα interaction depends on 3 C-terminal residues within helix 12 of ERRα and is strengthened by both PGC1α and serum deprivation. Pharmacological inhibition of ERRα decreased the interaction of ERRα to ligand-activated PPARα and revealed a transcriptome in line with enhanced mRNA expression of prototypical PPARα target genes, suggesting a role for ERRα as a transcriptional repressor. Strikingly, on other PPARα targets, including the isolated PDK4 enhancer, ERRα behaved oppositely. Chromatin immunoprecipitation analyses demonstrate a PPARα ligand-dependent ERRα recruitment onto chromatin at PPARα-binding regions, which is lost following ERRα inhibition in fed mouse livers. CONCLUSIONS Our data support the coexistence of multiple layers of transcriptional crosstalk mechanisms between PPARα and ERRα, which may serve to finetune the activity of PPARα as a nutrient-sensing transcription factor.
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Affiliation(s)
- Sofie J Desmet
- VIB Center for Medical Biotechnology, Belgium; Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Jonathan Thommis
- VIB Center for Medical Biotechnology, Belgium; Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Tineke Vanderhaeghen
- VIB Center for Inflammation Research, Belgium; Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Edmee M F Vandenboorn
- Department of Biomedical Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, 5612AZ Eindhoven, the Netherlands
| | - Dorien Clarisse
- VIB Center for Medical Biotechnology, Belgium; Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Yunkun Li
- VIB Center for Medical Biotechnology, Belgium; Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Steven Timmermans
- VIB Center for Inflammation Research, Belgium; Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Daria Fijalkowska
- VIB Center for Medical Biotechnology, Belgium; Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Dariusz Ratman
- VIB Center for Medical Biotechnology, Belgium; Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | | | - Lode De Cauwer
- VIB Center for Medical Biotechnology, Belgium; Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Bart Staels
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011-EGID, F-59000 Lille, France
| | - Luc Brunsveld
- Department of Biomedical Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, 5612AZ Eindhoven, the Netherlands
| | - Frank Peelman
- VIB Center for Medical Biotechnology, Belgium; Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Claude Libert
- VIB Center for Inflammation Research, Belgium; Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Jan Tavernier
- VIB Center for Medical Biotechnology, Belgium; Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Karolien De Bosscher
- VIB Center for Medical Biotechnology, Belgium; Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium.
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Vanderhaeghen T, Vandewalle J, Libert C. Spns2/S1P: it takes two to tango with inflammation and metabolic rewiring during sepsis. EMBO Rep 2023:e57615. [PMID: 37358010 PMCID: PMC10398644 DOI: 10.15252/embr.202357615] [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] [Received: 06/08/2023] [Accepted: 06/15/2023] [Indexed: 06/27/2023] Open
Abstract
Sepsis is the result of a dysregulated host response to an infection and causes high morbidity and mortality at the intensive care units worldwide. Despite intensive research, the current management of sepsis is supportive rather than curative. Therefore, new therapeutic interventions for sepsis and septic shock patients are urgently needed. In this issue of EMBO Reports, Fang et al have used rat sepsis models to show that macrophage-expressed SPNS2, a major transporter of S1P, is a crucial mediator of metabolic reprogramming of macrophages during sepsis which regulates inflammation via the lactate-ROS axis.
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Affiliation(s)
- Tineke Vanderhaeghen
- Center for Inflammation Research, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jolien Vandewalle
- Center for Inflammation Research, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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Vanderhaeghen T, Timmermans S, Eggermont M, Watts D, Vandewalle J, Wallaeys C, Nuyttens L, De Temmerman J, Hochepied T, Dewaele S, Berghe JV, Sanders N, Wielockx B, Beyaert R, Libert C. The impact of hepatocyte-specific deletion of hypoxia-inducible factors on the development of polymicrobial sepsis with focus on GR and PPARα function. Front Immunol 2023; 14:1124011. [PMID: 37006237 PMCID: PMC10060827 DOI: 10.3389/fimmu.2023.1124011] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 02/27/2023] [Indexed: 03/18/2023] Open
Abstract
IntroductionPolymicrobial sepsis causes acute anorexia (loss of appetite), leading to lipolysis in white adipose tissue and proteolysis in muscle, and thus release of free fatty acids (FFAs), glycerol and gluconeogenic amino acids. Since hepatic peroxisome proliferator-activated receptor alpha (PPARα) and glucocorticoid receptor (GR) quickly lose function in sepsis, these metabolites accumulate (causing toxicity) and fail to yield energy-rich molecules such as ketone bodies (KBs) and glucose. The mechanism of PPARα and GR dysfunction is not known.Methods & resultsWe investigated the hypothesis that hypoxia and/or activation of hypoxia inducible factors (HIFs) might play a role in these issues with PPARα and GR. After cecal ligation and puncture (CLP) in mice, leading to lethal polymicrobial sepsis, bulk liver RNA sequencing illustrated the induction of the genes encoding HIF1α and HIF2α, and an enrichment of HIF-dependent gene signatures. Therefore, we generated hepatocyte-specific knock-out mice for HIF1α, HIF2α or both, and a new HRE-luciferase reporter mouse line. After CLP, these HRE-luciferase reporter mice show signals in several tissues, including the liver. Hydrodynamic injection of an HRE-luciferase reporter plasmid also led to (liver-specific) signals in hypoxia and CLP. Despite these encouraging data, however, hepatocyte-specific HIF1α and/or HIF2α knock-out mice suggest that survival after CLP was not dependent on the hepatocyte-specific presence of HIF proteins, which was supported by measuring blood levels of glucose, FFAs, and KBs. The HIF proteins were also irrelevant in the CLP-induced glucocorticoid resistance, but we found indications that the absence of HIF1α in hepatocytes causes less inactivation of PPARα transcriptional function.ConclusionWe conclude that HIF1α and HIF2α are activated in hepatocytes in sepsis, but their contribution to the mechanisms leading to lethality are minimal.
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Affiliation(s)
- Tineke Vanderhaeghen
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Steven Timmermans
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Melanie Eggermont
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Deepika Watts
- Department of Clinical Pathobiochemistry, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
- Deutsche Forschungsgemeinschaft (DFG) Research Centre and Cluster of Excellence for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Jolien Vandewalle
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Charlotte Wallaeys
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Louise Nuyttens
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Joyca De Temmerman
- Department of Nutrition, Genetics, and Ethology, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
- Department of Pathology, Bacteriology, and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Tino Hochepied
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sylviane Dewaele
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Joke Vanden Berghe
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Niek Sanders
- Department of Nutrition, Genetics, and Ethology, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
- Department of Pathology, Bacteriology, and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Ben Wielockx
- Department of Clinical Pathobiochemistry, Institute for Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
- Deutsche Forschungsgemeinschaft (DFG) Research Centre and Cluster of Excellence for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Rudi Beyaert
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Flanders Institute for Biotechnology (VIB) Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- *Correspondence: Claude Libert,
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Timmermans S, Vandewalle J, Libert C. Mousepost 2.0, a major expansion of the resource. Nucleic Acids Res 2023; 51:1652-1661. [PMID: 36762471 PMCID: PMC9976886 DOI: 10.1093/nar/gkad064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 01/19/2023] [Accepted: 01/20/2023] [Indexed: 02/11/2023] Open
Abstract
The Mousepost 1.0 online search tool, launched in 2017, allowed to search for variations in all protein-coding gene sequences of 36 sequenced mouse inbred strains, compared to the reference strain C57BL/6J, which could be linked to strain-specific phenotypes and modifier effects. Because recently these genome sequences have been significantly updated and sequences of 16 extra strains added by the Mouse Genomes Project, a profound update, correction and expansion of the Mousepost 1.0 database has been performed and is reported here. Moreover, we have added a new class of protein disturbing sequence polymorphisms (besides stop codon losses, stop codon gains, small insertions and deletions, and missense mutations), namely start codon mutations. The current version, Mousepost 2.0 (https://mousepost.be), therefore is a significantly updated and invaluable tool available to the community and is described here and foreseen by multiple examples.
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Affiliation(s)
- Steven Timmermans
- VIB Center for Inflammation Research, 9052 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jolien Vandewalle
- VIB Center for Inflammation Research, 9052 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- VIB Center for Inflammation Research, 9052 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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Wallaeys C, Garcia‐Gonzalez N, Libert C. Paneth cells as the cornerstones of intestinal and organismal health: a primer. EMBO Mol Med 2022; 15:e16427. [PMID: 36573340 PMCID: PMC9906427 DOI: 10.15252/emmm.202216427] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/24/2022] [Accepted: 09/29/2022] [Indexed: 12/28/2022] Open
Abstract
Paneth cells are versatile secretory cells located in the crypts of Lieberkühn of the small intestine. In normal conditions, they function as the cornerstones of intestinal health by preserving homeostasis. They perform this function by providing niche factors to the intestinal stem cell compartment, regulating the composition of the microbiome through the production and secretion of antimicrobial peptides, performing phagocytosis and efferocytosis, taking up heavy metals, and preserving barrier integrity. Disturbances in one or more of these functions can lead to intestinal as well as systemic inflammatory and infectious diseases. This review discusses the multiple functions of Paneth cells, and the mechanisms and consequences of Paneth cell dysfunction. It also provides an overview of the tools available for studying Paneth cells.
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Affiliation(s)
- Charlotte Wallaeys
- Center for Inflammation Research‐VIBGhentBelgium,Department of Biomedical Molecular BiologyGhent UniversityGhentBelgium
| | - Natalia Garcia‐Gonzalez
- Center for Inflammation Research‐VIBGhentBelgium,Department of Biomedical Molecular BiologyGhent UniversityGhentBelgium
| | - Claude Libert
- Center for Inflammation Research‐VIBGhentBelgium,Department of Biomedical Molecular BiologyGhent UniversityGhentBelgium
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Vandewalle J, Garcia B, Timmermans S, Vanderhaeghen T, Van Wyngene L, Eggermont M, Dufoor H, Van Dender C, Halimi F, Croubels S, Herpain A, Libert C. Hepatic Peroxisome Proliferator-Activated Receptor Alpha Dysfunction in Porcine Septic Shock. Cells 2022; 11:cells11244080. [PMID: 36552845 PMCID: PMC9777423 DOI: 10.3390/cells11244080] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Despite decades of research, sepsis remains one of the most urgent unmet medical needs. Mechanistic investigations into sepsis have mainly focused on targeting inflammatory pathways; however, recent data indicate that sepsis should also be seen as a metabolic disease. Targeting metabolic dysregulations that take place in sepsis might uncover novel therapeutic opportunities. The role of peroxisome proliferator-activated receptor alpha (PPARɑ) in liver dysfunction during sepsis has recently been described, and restoring PPARɑ signaling has proven to be successful in mouse polymicrobial sepsis. To confirm that such therapy might be translated to septic patients, we analyzed metabolic perturbations in the liver of a porcine fecal peritonitis model. Resuscitation with fluids, vasopressor, antimicrobial therapy and abdominal lavage were applied to the pigs in order to mimic human clinical care. By using RNA-seq, we detected downregulated PPARɑ signaling in the livers of septic pigs and that reduced PPARɑ levels correlated well with disease severity. As PPARɑ regulates the expression of many genes involved in fatty acid oxidation, the reduced expression of these target genes, concomitant with increased free fatty acids in plasma and ectopic lipid deposition in the liver, was observed. The results obtained with pigs are in agreement with earlier observations seen in mice and support the potential of targeting defective PPARɑ signaling in clinical research.
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Affiliation(s)
- Jolien Vandewalle
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
- Correspondence: (J.V.); (C.L.)
| | - Bruno Garcia
- Experimental Laboratory of Intensive Care, Université Libre de Bruxelles, 1050 Brussels, Belgium
- Department of Intensive Care, Centre Hospitalier Universitaire de Lille, 59000 Lille, France
| | - Steven Timmermans
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
| | - Tineke Vanderhaeghen
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
| | - Lise Van Wyngene
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
| | - Melanie Eggermont
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
| | - Hester Dufoor
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
| | - Céline Van Dender
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
| | - Fëllanza Halimi
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
| | - Siska Croubels
- Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
| | - Antoine Herpain
- Experimental Laboratory of Intensive Care, Université Libre de Bruxelles, 1050 Brussels, Belgium
- Department of Intensive Care, Erasme University Hospital—HUB, Université Libre de Bruxelles, 1050 Brussels, Belgium
- Department of Intensive Care, St.-Pierre University Hospital, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Claude Libert
- VIB Center for Inflammation Research, VIB, 9052 Ghent, Belgium
- Department for Biomedical Molecular Biology, Faculty of Sciences, Ghent University, 9052 Ghent, Belgium
- Correspondence: (J.V.); (C.L.)
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Claessens F, Libert C, Palvimo J, El Kharraz S. OR07-6 Disrupting DNA-binding Domain Dimerization In The Androgen Receptor In Mice Results In a Partial Androgen Insensitivity Model. J Endocr Soc 2022; 6. [PMCID: PMC9625235 DOI: 10.1210/jendso/bvac150.1493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
The androgen receptor (AR) plays a crucial role in the development and maintenance of the male phenotype, as shown in patients with androgen insensitivity syndrome (AIS). The AR is a nuclear receptor that needs to homodimerize to execute its role as transcription factor. Dimerization can occur through three different modes: via the DNA-binding domain (DBD), via the ligand-binding domain and via an interaction between the LBD and the aminoterminal domain. Dimerization via the DBD is very well known and occurs through the D-box located in the second zinc finger. DBD dimerization is generally accepted for all steroid receptors, but some of them show that D-box mutations do not inactivate them completely. However, for the AR, no monomeric transactivation capacity was described yet. To study the role of D-box independent activity of the AR, we introduced a double point mutation in the D-box that is predicted to disrupt DBD dimerization (ARDmon). These two point mutations were found in separate patients suffering from partial AIS. In vitro studies with this mutant suggest that the remaining activity depends on the androgen response element under investigation. We show that ligand binding was not affected by the D-box mutation. Furthermore, BioID assays indicated no changes in coregulatory interactions. When introducing the corresponding mutation in mice, this led to a phenotype that is intermediate between global ARKO and wild type (WT) males. Based on their anogenital distance (AGD) and the absence of nipples at early age, the ARDmon/Y mice were identified as males. Follow-up of their AGD and body weight, however, revealed clear differences with both WT males and females. Furthermore, hypospadias was observed in the ARDmon/Y mice. Testes were smaller in size compared to the WT males and first analysis showed almost no expression of well-known AR regulated genes. Reminiscent structures of the epididymis were found. In summary, the ARDmon mouse model shows an intermediate AIS phenotype. Via orchidectomy in combination with androgen replacement therapy, we will now investigate remaining androgen responses in the ARDmon/Y mice and elucidate response elements on which the AR can act in a D-box independent way. Additionally, we generated the first rodent PAIS model with a genetic cause of hypospadias. Presentation: Saturday, June 11, 2022 12:45 p.m. - 1:00 p.m.
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Luquette LJ, Miller MB, Zhou Z, Bohrson CL, Zhao Y, Jin H, Gulhan D, Ganz J, Bizzotto S, Kirkham S, Hochepied T, Libert C, Galor A, Kim J, Lodato MA, Garaycoechea JI, Gawad C, West J, Walsh CA, Park PJ. Single-cell genome sequencing of human neurons identifies somatic point mutation and indel enrichment in regulatory elements. Nat Genet 2022; 54:1564-1571. [PMID: 36163278 PMCID: PMC9833626 DOI: 10.1038/s41588-022-01180-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 08/04/2022] [Indexed: 01/13/2023]
Abstract
Accurate somatic mutation detection from single-cell DNA sequencing is challenging due to amplification-related artifacts. To reduce this artifact burden, an improved amplification technique, primary template-directed amplification (PTA), was recently introduced. We analyzed whole-genome sequencing data from 52 PTA-amplified single neurons using SCAN2, a new genotyper we developed to leverage mutation signatures and allele balance in identifying somatic single-nucleotide variants (SNVs) and small insertions and deletions (indels) in PTA data. Our analysis confirms an increase in nonclonal somatic mutation in single neurons with age, but revises the estimated rate of this accumulation to 16 SNVs per year. We also identify artifacts in other amplification methods. Most importantly, we show that somatic indels increase by at least three per year per neuron and are enriched in functional regions of the genome such as enhancers and promoters. Our data suggest that indels in gene-regulatory elements have a considerable effect on genome integrity in human neurons.
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Affiliation(s)
- Lovelace J Luquette
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
| | - Michael B Miller
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA
- Manton Center for Orphan Disease, Boston Children's Hospital, Boston, MA, USA
- Division of Neuropathology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Departments of Neurology and Pediatrics, Harvard Medical School, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Zinan Zhou
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA
| | - Craig L Bohrson
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
| | - Yifan Zhao
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
| | - Hu Jin
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
| | - Doga Gulhan
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
| | - Javier Ganz
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA
| | - Sara Bizzotto
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA
| | - Samantha Kirkham
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA
| | - Tino Hochepied
- Center for Inflammation Research, Flanders Institute for Biotechnolpogy (VIB), Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Center for Inflammation Research, Flanders Institute for Biotechnolpogy (VIB), Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Alon Galor
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
| | - Junho Kim
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA
- Department of Biological Sciences, Sungkyunkwan University, Suwon, South Korea
| | - Michael A Lodato
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Juan I Garaycoechea
- Hubrecht Institute-KNAW, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Charles Gawad
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
- Chan Zuckerberg Biohub, San Francisco, CA, USA
| | | | - Christopher A Walsh
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA.
- Manton Center for Orphan Disease, Boston Children's Hospital, Boston, MA, USA.
- Howard Hughes Medical Institute, Boston Children's Hospital, Boston, MA, USA.
| | - Peter J Park
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA.
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El Kharraz S, Dubois V, Launonen KM, Helminen L, Palvimo JJ, Libert C, Smeets E, Moris L, Eerlings R, Vanderschueren D, Helsen C, Claessens F. N/C Interactions Are Dispensable for Normal In Vivo Functioning of the Androgen Receptor in Male Mice. Endocrinology 2022; 163:6652495. [PMID: 35908178 PMCID: PMC9756762 DOI: 10.1210/endocr/bqac104] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Indexed: 11/19/2022]
Abstract
The androgen receptor (AR) plays a central role in the development and maintenance of the male phenotype. The binding of androgens to the receptor induces interactions between the carboxyterminal ligand-binding domain and the highly conserved 23FQNLF27 motif in the aminoterminal domain. The role of these so-called N/C interactions in AR functioning is debated. In vitro assays show that mutating the AR in the 23FQNLF27 motif (called ARNoC) attenuates the AR transactivation of reporter genes, has no effect on ligand binding, but does affect protein-protein interactions with several AR coregulators. To test the in vivo relevance of the N/C interaction, we analyzed the consequences of the genomic introduction of the ARNoC mutation in mice. Surprisingly, the ARNoC/Y mice show a normal male development, with unaffected male anogenital distance and normal accessory sex glands, male circulating androgen levels, body composition, and fertility. The responsiveness of androgen target genes in kidney, prostate, and testes was also unaffected. We thus conclude that the N/C interactions in the AR are not essential for the development of a male phenotype under normal physiological conditions.
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Affiliation(s)
- Sarah El Kharraz
- Correspondence: Frank Claessens, PhD, Department of Cellular and Molecular Medicine, Molecular Endocrinology Laboratory, KU Leuven, Leuven, 3000, Belgium. . Reprint requests can be sent to or
| | - Vanessa Dubois
- Department of Chronic Diseases and Metabolism, Clinical and Experimental Endocrinology, KU Leuven, Leuven, 3000, Belgium
- Department of Basic and Applied Medical Sciences, Basic and Translational Endocrinology, Ghent University, Ghent, 9000, Belgium
| | - Kaisa-Mari Launonen
- Institute of Biomedicine, University of Eastern Finland, Kuopio, 70210, Finland
| | - Laura Helminen
- Institute of Biomedicine, University of Eastern Finland, Kuopio, 70210, Finland
| | - Jorma J Palvimo
- Institute of Biomedicine, University of Eastern Finland, Kuopio, 70210, Finland
| | - Claude Libert
- VIB Center for Inflammation Research, VIB, Ghent, 9052, Belgium
- Department for Biomedical Molecular Biology, Ghent University, Ghent, 9052, Belgium
| | - Elien Smeets
- Department of Cellular and Molecular Medicine, Molecular Endocrinology Laboratory, KU Leuven, Leuven, 3000, Belgium
| | - Lisa Moris
- Department of Cellular and Molecular Medicine, Molecular Endocrinology Laboratory, KU Leuven, Leuven, 3000, Belgium
| | - Roy Eerlings
- Department of Cellular and Molecular Medicine, Molecular Endocrinology Laboratory, KU Leuven, Leuven, 3000, Belgium
| | - Dirk Vanderschueren
- Department of Chronic Diseases and Metabolism, Clinical and Experimental Endocrinology, KU Leuven, Leuven, 3000, Belgium
| | - Christine Helsen
- Department of Cellular and Molecular Medicine, Molecular Endocrinology Laboratory, KU Leuven, Leuven, 3000, Belgium
| | - Frank Claessens
- Correspondence: Frank Claessens, PhD, Department of Cellular and Molecular Medicine, Molecular Endocrinology Laboratory, KU Leuven, Leuven, 3000, Belgium. . Reprint requests can be sent to or
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10
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Van Moortel L, Thommis J, Maertens B, Staes A, Clarisse D, De Sutter D, Libert C, Meijer OC, Eyckerman S, Gevaert K, De Bosscher K. Novel assays monitoring direct glucocorticoid receptor protein activity exhibit high predictive power for ligand activity on endogenous gene targets. Biomed Pharmacother 2022; 152:113218. [PMID: 35709653 DOI: 10.1016/j.biopha.2022.113218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 11/25/2022] Open
Abstract
Exogenous glucocorticoids are widely used in the clinic for the treatment of inflammatory disorders and auto-immune diseases. Unfortunately, their use is hampered by many side effects and therapy resistance. Efforts to find more selective glucocorticoid receptor (GR) agonists and modulators (called SEGRAMs) that are able to separate anti-inflammatory effects via gene repression from metabolic effects via gene activation, have been unsuccessful so far. In this study, we characterized a set of functionally diverse GR ligands in A549 cells, first using a panel of luciferase-based reporter gene assays evaluating GR-driven gene activation and gene repression. We expanded this minimal assay set with novel luciferase-based read-outs monitoring GR protein levels, GR dimerization and GR Serine 211 (Ser211) phosphorylation status and compared their outcomes with compound effects on the mRNA levels of known GR target genes in A549 cells and primary hepatocytes. We found that luciferase reporters evaluating GR-driven gene activation and gene repression were not always reliable predictors for effects on endogenous target genes. Remarkably, our novel assay monitoring GR Ser211 phosphorylation levels proved to be the most reliable predictor for compound effects on almost all tested endogenous GR targets, both driven by gene activation and repression. The integration of this novel assay in existing screening platforms running both in academia and industry may therefore boost chances to find novel GR ligands with an actual improved therapeutic benefit.
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Affiliation(s)
- Laura Van Moortel
- VIB Center for Medical Biotechnology (CMB), Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium.
| | - Jonathan Thommis
- VIB Center for Medical Biotechnology (CMB), Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium.
| | - Brecht Maertens
- VIB Center for Medical Biotechnology (CMB), Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium.
| | - An Staes
- VIB Center for Medical Biotechnology (CMB), Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium.
| | - Dorien Clarisse
- VIB Center for Medical Biotechnology (CMB), Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium.
| | - Delphine De Sutter
- VIB Center for Medical Biotechnology (CMB), Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium.
| | - Claude Libert
- VIB Center for Inflammation Research (IRC), Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium.
| | - Onno C Meijer
- Department of Medicine, Division of Endocrinology, Leiden University Medical Center, Albinusdreef 2, 2333ZA Leiden, the Netherlands; Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Postbus 9600, 2300 RC Leiden, the Netherlands.
| | - Sven Eyckerman
- VIB Center for Medical Biotechnology (CMB), Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium.
| | - Kris Gevaert
- VIB Center for Medical Biotechnology (CMB), Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium.
| | - Karolien De Bosscher
- VIB Center for Medical Biotechnology (CMB), Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, Technologiepark-Zwijnaarde 75, 9052 Ghent, Belgium.
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11
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Kananen L, Hurme M, Bürkle A, Moreno-Villanueva M, Bernhardt J, Debacq-Chainiaux F, Grubeck-Loebenstein B, Malavolta M, Basso A, Piacenza F, Collino S, Gonos ES, Sikora E, Gradinaru D, Jansen EHJM, Dollé MET, Salmon M, Stuetz W, Weber D, Grune T, Breusing N, Simm A, Capri M, Franceschi C, Slagboom E, Talbot D, Libert C, Raitanen J, Koskinen S, Härkänen T, Stenholm S, Ala-Korpela M, Lehtimäki T, Raitakari OT, Ukkola O, Kähönen M, Jylhä M, Jylhävä J. Circulating cell-free DNA in health and disease - the relationship to health behaviours, ageing phenotypes and metabolomics. GeroScience 2022; 45:85-103. [PMID: 35864375 PMCID: PMC9886738 DOI: 10.1007/s11357-022-00590-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 05/06/2022] [Indexed: 02/03/2023] Open
Abstract
Circulating cell-free DNA (cf-DNA) has emerged as a promising biomarker of ageing, tissue damage and cellular stress. However, less is known about health behaviours, ageing phenotypes and metabolic processes that lead to elevated cf-DNA levels. We sought to analyse the relationship of circulating cf-DNA level to age, sex, smoking, physical activity, vegetable consumption, ageing phenotypes (physical functioning, the number of diseases, frailty) and an extensive panel of biomarkers including blood and urine metabolites and inflammatory markers in three human cohorts (N = 5385; 17-82 years). The relationships were assessed using correlation statistics, and linear and penalised regressions (the Lasso), also stratified by sex.cf-DNA levels were significantly higher in men than in women, and especially in middle-aged men and women who smoke, and in older more frail individuals. Correlation statistics of biomarker data showed that cf-DNA level was higher with elevated inflammation (C-reactive protein, interleukin-6), and higher levels of homocysteine, and proportion of red blood cells and lower levels of ascorbic acid. Inflammation (C-reactive protein, glycoprotein acetylation), amino acids (isoleucine, leucine, tyrosine), and ketogenesis (3-hydroxybutyrate) were included in the cf-DNA level-related biomarker profiles in at least two of the cohorts.In conclusion, circulating cf-DNA level is different by sex, and related to health behaviour, health decline and metabolic processes common in health and disease. These results can inform future studies where epidemiological and biological pathways of cf-DNA are to be analysed in details, and for studies evaluating cf-DNA as a potential clinical marker.
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Affiliation(s)
- Laura Kananen
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden. .,Faculty of Social Sciences (Health Sciences), and Gerontology Research Center, Tampere University, Tampere, Finland. .,Faculty of Medicine and Health Technology, and Gerontology Research Center, Tampere University, Tampere, Finland.
| | - Mikko Hurme
- grid.502801.e0000 0001 2314 6254Faculty of Medicine and Health Technology, and Gerontology Research Center, Tampere University, Tampere, Finland
| | - Alexander Bürkle
- grid.9811.10000 0001 0658 7699Molecular Toxicology Group, University of Konstanz, Konstanz, Germany
| | - Maria Moreno-Villanueva
- grid.9811.10000 0001 0658 7699Molecular Toxicology Group, University of Konstanz, Konstanz, Germany
| | | | - Florence Debacq-Chainiaux
- grid.6520.10000 0001 2242 8479URBC-Narilis, University of Namur, Rue de Bruxelles, 61, B-5000 Namur, Belgium
| | - Beatrix Grubeck-Loebenstein
- grid.5771.40000 0001 2151 8122Research Institute for Biomedical Aging Research, University of Innsbruck, Rennweg, 10, 6020 Innsbruck, Austria
| | - Marco Malavolta
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS INRCA, Ancona, Italy
| | - Andrea Basso
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS INRCA, Ancona, Italy
| | - Francesco Piacenza
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS INRCA, Ancona, Italy
| | - Sebastiano Collino
- grid.5333.60000000121839049Nestlé Research, Nestlé Institute of Health Sciences, EPFL Innovation Park, 1015 Lausanne, Switzerland
| | - Efstathios S. Gonos
- grid.22459.380000 0001 2232 6894Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, Athens, Greece
| | - Ewa Sikora
- grid.419305.a0000 0001 1943 2944Laboratory of the Molecular Bases of Ageing, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur street, 02-093 Warsaw, Poland
| | - Daniela Gradinaru
- grid.8194.40000 0000 9828 7548Department of Biochemistry, Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 020956 Bucharest, Romania
| | - Eugene H. J. M. Jansen
- grid.31147.300000 0001 2208 0118National Institute for Public Health and the Environment (RIVM), Centre for Health Protection, P.O. Box 1, 3720 BA Bilthoven, The Netherlands
| | - Martijn E. T. Dollé
- grid.31147.300000 0001 2208 0118National Institute for Public Health and the Environment (RIVM), Centre for Health Protection, P.O. Box 1, 3720 BA Bilthoven, The Netherlands
| | - Michel Salmon
- grid.425994.7Straticell, Science Park Crealys, Rue Jean Sonet 10, 5032 Les Isnes, Belgium
| | - Wolfgang Stuetz
- grid.9464.f0000 0001 2290 1502Institute of Nutritional Sciences (140), University of Hohenheim, 70593 Stuttgart, Germany
| | - Daniela Weber
- grid.418213.d0000 0004 0390 0098Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), Nuthetal, Germany
| | - Tilman Grune
- grid.418213.d0000 0004 0390 0098Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), Nuthetal, Germany ,grid.10420.370000 0001 2286 1424Department of Physiological Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria ,grid.9464.f0000 0001 2290 1502Institute of Nutritional Medicine (180), University of Hohenheim, 70593 Stuttgart, Germany
| | - Nicolle Breusing
- grid.9464.f0000 0001 2290 1502Institute of Nutritional Medicine (180), University of Hohenheim, 70593 Stuttgart, Germany
| | - Andreas Simm
- grid.461820.90000 0004 0390 1701Department of Cardiothoracic Surgery, University Hospital Halle, Ernst-Grube Str. 40, 06120 Halle (Saale), Germany
| | - Miriam Capri
- grid.6292.f0000 0004 1757 1758DIMES- Department of Experimental, Diagnostic and Specialty Medicine,
Interdepartmental Center “Alma Mater Research Institute On Global Challenges and Climate Change (Alma Climate)”,
Alma Mater Studiorum, University of Bologna, 40126 Bologna, Italy
| | - Claudio Franceschi
- grid.6292.f0000 0004 1757 1758DIMES- Department of Experimental, Diagnostic and Specialty Medicine,
Interdepartmental Center “Alma Mater Research Institute On Global Challenges and Climate Change (Alma Climate)”,
Alma Mater Studiorum, University of Bologna, 40126 Bologna, Italy
| | - Eline Slagboom
- grid.10419.3d0000000089452978Section of Molecular Epidemiology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Duncan Talbot
- Unilever Science and Technology, Beauty and Personal Care, Sharnbrook, UK
| | - Claude Libert
- grid.11486.3a0000000104788040Center for Inflammation Research, VIB, Ghent, Belgium ,grid.5342.00000 0001 2069 7798Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jani Raitanen
- grid.502801.e0000 0001 2314 6254Faculty of Social Sciences (Health Sciences), and Gerontology Research Center, Tampere University, Tampere, Finland
| | - Seppo Koskinen
- grid.14758.3f0000 0001 1013 0499National Institute for Health and Welfare, Helsinki, Finland
| | - Tommi Härkänen
- grid.14758.3f0000 0001 1013 0499National Institute for Health and Welfare, Helsinki, Finland
| | - Sari Stenholm
- grid.1374.10000 0001 2097 1371Department of Public Health, University of Turku and Turku University Hospital, Turku, Finland ,grid.1374.10000 0001 2097 1371Centre for Population Health Research, University of Turku and Turku University Hospital, Turku, Finland
| | - Mika Ala-Korpela
- grid.10858.340000 0001 0941 4873Computational Medicine, Faculty of Medicine, University of Oulu and Biocenter Oulu, Oulu, Finland ,grid.10858.340000 0001 0941 4873Center for Life Course Health Research, University of Oulu, Oulu, Finland ,grid.9668.10000 0001 0726 2490NMR Metabolomics Laboratory, School of Pharmacy, University of Eastern Finland, Kuopio, Finland
| | - Terho Lehtimäki
- grid.502801.e0000 0001 2314 6254Department of Clinical Chemistry, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland ,grid.502801.e0000 0001 2314 6254Finnish Cardiovascular Research Center, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland ,grid.511163.10000 0004 0518 4910Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
| | - Olli T. Raitakari
- grid.1374.10000 0001 2097 1371Centre for Population Health Research, University of Turku and Turku University Hospital, Turku, Finland ,grid.1374.10000 0001 2097 1371Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland ,grid.410552.70000 0004 0628 215XDepartment of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, Finland
| | - Olavi Ukkola
- grid.10858.340000 0001 0941 4873Research Unit of Internal Medicine, Medical Research Center Oulu, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Mika Kähönen
- grid.502801.e0000 0001 2314 6254Department of Clinical Chemistry, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland ,grid.502801.e0000 0001 2314 6254Finnish Cardiovascular Research Center, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland ,grid.412330.70000 0004 0628 2985Department of Clinical Physiology, Tampere University Hospital, Tampere, Finland
| | - Marja Jylhä
- grid.502801.e0000 0001 2314 6254Faculty of Social Sciences (Health Sciences), and Gerontology Research Center, Tampere University, Tampere, Finland
| | - Juulia Jylhävä
- grid.4714.60000 0004 1937 0626Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden ,grid.502801.e0000 0001 2314 6254Faculty of Social Sciences (Health Sciences), and Gerontology Research Center, Tampere University, Tampere, Finland
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12
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Kim SW, Alci K, Van Gaever F, Driege Y, Bicalho K, Goeminne G, Libert C, Goossens A, Beyaert R, Staal J. Engineering a highly sensitive biosensor for abscisic acid in mammalian cells. FEBS Lett 2022; 596:2576-2590. [PMID: 35727199 DOI: 10.1002/1873-3468.14431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 05/21/2022] [Accepted: 05/24/2022] [Indexed: 11/10/2022]
Abstract
Abscisic acid (ABA) is a signaling molecule conserved in plants, bacteria, fungi and animals. Recently, ABA has gained attention for its pharmacological activities and its potential as a biomarker for the severity of chronic obstructive pulmonary disease (COPD) and glioma. This prompts the development of a reliable, sensitive, rapid, and cost-effective method to quantify ABA levels in mammalian cells and tissues. The previously described ABA biosensor system based on the ABA-dependent interaction between the plant ABA receptor PYL1 and co-receptor ABI1 is not sensitive enough for the low ABA levels seen in mammals. Therefore, we optimized this system by replacing PYL1 with other high-affinity plant PYL proteins. The optimized biosensor system engineered with the PYL8 receptor enabled the quantification of ABA at low concentrations in HEK293T cells.
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Affiliation(s)
- Seo Woo Kim
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,Center for Plant Systems Biology, VIB, Ghent, Belgium.,Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Kübra Alci
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,BCCM/GeneCorner, Ghent University, Ghent, Belgium
| | - Femke Van Gaever
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Yasmine Driege
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | | | | | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Alain Goossens
- Center for Plant Systems Biology, VIB, Ghent, Belgium.,Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Rudi Beyaert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jens Staal
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
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13
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Abstract
Sepsis is involved in ~ 20% of annual global deaths. Despite decades of research, the current management of sepsis remains supportive rather than curative. Clinical trials in sepsis have mainly been focused on targeting the inflammatory pathway, but without success. Recent data indicate that metabolic dysregulation takes place in sepsis, and targeting metabolic pathways might hold much promise for the management of sepsis. Sepsis yields a strong starvation response, including the release of high-energy metabolites such as lactate and free fatty acids. However, the activity of two major transcription factors, GR and PPARα, is downregulated in hepatocytes, leading to the accumulation and toxicity of metabolites that, moreover, fail to be transformed into useful molecules such as glucose and ketones. We review the literature and suggest mechanisms and potential therapeutic targets that might prevent or revert the fatal metabolic dysregulation in sepsis.
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Affiliation(s)
- Jolien Vandewalle
- Center for Inflammation Research, Vlaams Instituut voor Biotechnologie (VIB), Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Center for Inflammation Research, Vlaams Instituut voor Biotechnologie (VIB), Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
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14
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Timmermans S, Vandewalle J, Libert C. Dimerization of the Glucocorticoid Receptor and Its Importance in (Patho)physiology: A Primer. Cells 2022; 11:cells11040683. [PMID: 35203332 PMCID: PMC8870481 DOI: 10.3390/cells11040683] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/10/2022] [Accepted: 02/13/2022] [Indexed: 02/01/2023] Open
Abstract
The glucocorticoid receptor (GR) is a very versatile protein that comes in several forms, interacts with many proteins and has multiple functions. Numerous therapies are based on GRs’ actions but the occurrence of side effects and reduced responses to glucocorticoids have motivated scientists to study GRs in great detail. The notion that GRs can perform functions as a monomeric protein, but also as a homodimer has raised questions about the underlying mechanisms, structural aspects of dimerization, influencing factors and biological functions. In this review paper, we are providing an overview of the current knowledge and insights about this important aspect of GR biology.
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Affiliation(s)
- Steven Timmermans
- Center for Inflammation Research, VIB, 9052 Ghent, Belgium; (S.T.); (J.V.)
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Jolien Vandewalle
- Center for Inflammation Research, VIB, 9052 Ghent, Belgium; (S.T.); (J.V.)
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB, 9052 Ghent, Belgium; (S.T.); (J.V.)
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
- Correspondence:
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15
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Timmermans S, Verhoog NJD, Van Looveren K, Dewaele S, Hochepied T, Eggermont M, Gilbert B, Boerema-de Munck A, Vanderhaeghen T, Vanden Berghe J, Garcia Gonzalez N, Vandewalle J, Bloch Y, Provost M, Savvides SN, De Bosscher K, Declercq W, Rottier RJ, Louw A, Libert C. Point mutation I634A in the glucocorticoid receptor causes embryonic lethality by reduced ligand binding. J Biol Chem 2022; 298:101574. [PMID: 35007536 PMCID: PMC8808175 DOI: 10.1016/j.jbc.2022.101574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 12/23/2022] Open
Abstract
The glucocorticoid (GC) receptor (GR) is essential for normal development and in the initiation of inflammation. Healthy GRdim/dim mice with reduced dimerization propensity due to a point mutation (A465T) at the dimer interface of the GR DNA-binding domain (DBD) (here GRD/D) have previously helped to define the functions of GR monomers and dimers. Since GRD/D retains residual dimerization capacity, here we generated the dimer-nullifying double mutant GRD+L/D+L mice, featuring an additional mutation (I634A) in the ligand-binding domain (LBD) of GR. These mice are perinatally lethal, as are GRL/L mice (these mice have the I634A mutation but not the A465T mutation), displaying improper lung and skin formation. Using embryonic fibroblasts, high and low doses of dexamethasone (Dex), nuclear translocation assays, RNAseq, dimerization assays, and ligand-binding assays (and Kd values), we found that the lethal phenotype in these mice is due to insufficient ligand binding. These data suggest there is some correlation between GR dimerization potential and ligand affinity. We conclude that even a mutation as subtle as I634A, at a position not directly involved in ligand interactions sensu stricto, can still influence ligand binding and have a lethal outcome.
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Affiliation(s)
- Steven Timmermans
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | | | - Kelly Van Looveren
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sylviane Dewaele
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Tino Hochepied
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Melanie Eggermont
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Barbara Gilbert
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Anne Boerema-de Munck
- Department of Pediatric Surgery, Erasmus Medical Center, Sophia Children's Hospital, Rotterdam, The Netherlands; Department of Cell Biology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Tineke Vanderhaeghen
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Joke Vanden Berghe
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Natalia Garcia Gonzalez
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jolien Vandewalle
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Yehudi Bloch
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
| | - Mathias Provost
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
| | - Savvas N Savvides
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
| | - Karolien De Bosscher
- Department of Biochemistry, Ghent University, Ghent, Belgium; Receptor Research Laboratories, Nuclear Receptor Lab, Medical Biotechnology Center, VIB, Ghent, Belgium
| | - Wim Declercq
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Robbert J Rottier
- Department of Pediatric Surgery, Erasmus Medical Center, Sophia Children's Hospital, Rotterdam, The Netherlands; Department of Cell Biology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Ann Louw
- Department of Biochemistry, Stellenbosch University, Stellenbosch, South Africa
| | - Claude Libert
- VIB Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
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16
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Vanderhaeghen T, Timmermans S, Watts D, Paakinaho V, Eggermont M, Vandewalle J, Wallaeys C, Van Wyngene L, Van Looveren K, Nuyttens L, Dewaele S, Vanden Berghe J, Lemeire K, De Backer J, Dirkx L, Vanden Berghe W, Caljon G, Ghesquière B, De Bosscher K, Wielockx B, Palvimo JJ, Beyaert R, Libert C. Reprogramming of glucocorticoid receptor function by hypoxia. EMBO Rep 2022; 23:e53083. [PMID: 34699114 PMCID: PMC8728616 DOI: 10.15252/embr.202153083] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 04/18/2021] [Revised: 09/29/2021] [Accepted: 10/05/2021] [Indexed: 01/07/2023] Open
Abstract
Here, we investigate the impact of hypoxia on the hepatic response of glucocorticoid receptor (GR) to dexamethasone (DEX) in mice via RNA-sequencing. Hypoxia causes three types of reprogramming of GR: (i) much weaker induction of classical GR-responsive genes by DEX in hypoxia, (ii) a number of genes is induced by DEX specifically in hypoxia, and (iii) hypoxia induces a group of genes via activation of the hypothalamic-pituitary-adrenal (HPA) axis. Transcriptional profiles are reflected by changed GR DNA-binding as measured by ChIP sequencing. The HPA axis is induced by hypothalamic HIF1α and HIF2α activation and leads to GR-dependent lipolysis and ketogenesis. Acute inflammation, induced by lipopolysaccharide, is prevented by DEX in normoxia but not during hypoxia, and this is attributed to HPA axis activation by hypoxia. We unfold new physiological pathways that have consequences for patients suffering from GC resistance.
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17
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Rahman S, Vandewalle J, van Hamersveld PHP, Verseijden C, Welting O, Jongejan A, Casanova P, Meijer SL, Libert C, Hakvoort TBM, de Jonge WJ, Heinsbroek SEM. miR-511 Deficiency Protects Mice from Experimental Colitis by Reducing TLR3 and TLR4 Responses via WD Repeat and FYVE-Domain-Containing Protein 1. Cells 2021; 11:58. [PMID: 35011620 PMCID: PMC8750561 DOI: 10.3390/cells11010058] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/17/2021] [Accepted: 12/21/2021] [Indexed: 12/15/2022] Open
Abstract
Antimicrobial responses play an important role in maintaining intestinal heath. Recently we reported that miR-511 may regulate TLR4 responses leading to enhanced intestinal inflammation. However, the exact mechanism remained unclear. In this study we investigated the effect of miR-511 deficiency on anti-microbial responses and DSS-induced intestinal inflammation. miR-511-deficient mice were protected from DSS-induced colitis as shown by significantly lower disease activity index, weight loss and histology scores in the miR-511-deficient group. Furthermore, reduced inflammatory cytokine responses were observed in colons of miR-511 deficient mice. In vitro studies with bone marrow-derived M2 macrophages showed reduced TLR3 and TLR4 responses in miR-511-deficient macrophages compared to WT macrophages. Subsequent RNA sequencing revealed Wdfy1 as the potential miR-511 target. WDFY1 deficiency is related to impaired TLR3/TLR4 immune responses and the expression was downregulated in miR-511-deficient macrophages and colons. Together, this study shows that miR-511 is involved in the regulation of intestinal inflammation through downstream regulation of TLR3 and TLR4 responses via Wdfy1.
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Affiliation(s)
- Shafaque Rahman
- Tytgat Institute for Liver and Intestinal Research, Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, 1105 BK Amsterdam, The Netherlands; (S.R.); (P.H.P.v.H.); (C.V.); (O.W.); (P.C.); (T.B.M.H.); (S.E.M.H.)
| | - Jolien Vandewalle
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium; (J.V.); (C.L.)
- VIB Centre for Inflammation Research, VIB, 9052 Ghent, Belgium
| | - Patricia H. P. van Hamersveld
- Tytgat Institute for Liver and Intestinal Research, Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, 1105 BK Amsterdam, The Netherlands; (S.R.); (P.H.P.v.H.); (C.V.); (O.W.); (P.C.); (T.B.M.H.); (S.E.M.H.)
| | - Caroline Verseijden
- Tytgat Institute for Liver and Intestinal Research, Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, 1105 BK Amsterdam, The Netherlands; (S.R.); (P.H.P.v.H.); (C.V.); (O.W.); (P.C.); (T.B.M.H.); (S.E.M.H.)
| | - Olaf Welting
- Tytgat Institute for Liver and Intestinal Research, Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, 1105 BK Amsterdam, The Netherlands; (S.R.); (P.H.P.v.H.); (C.V.); (O.W.); (P.C.); (T.B.M.H.); (S.E.M.H.)
| | - Aldo Jongejan
- Bioinformatics Laboratory, Department of Epidemiology and Data Science, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands;
| | - Pierina Casanova
- Tytgat Institute for Liver and Intestinal Research, Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, 1105 BK Amsterdam, The Netherlands; (S.R.); (P.H.P.v.H.); (C.V.); (O.W.); (P.C.); (T.B.M.H.); (S.E.M.H.)
| | - Sybren L. Meijer
- Department of Pathology, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands;
| | - Claude Libert
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium; (J.V.); (C.L.)
- VIB Centre for Inflammation Research, VIB, 9052 Ghent, Belgium
| | - Theodorus B. M. Hakvoort
- Tytgat Institute for Liver and Intestinal Research, Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, 1105 BK Amsterdam, The Netherlands; (S.R.); (P.H.P.v.H.); (C.V.); (O.W.); (P.C.); (T.B.M.H.); (S.E.M.H.)
| | - Wouter J. de Jonge
- Tytgat Institute for Liver and Intestinal Research, Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, 1105 BK Amsterdam, The Netherlands; (S.R.); (P.H.P.v.H.); (C.V.); (O.W.); (P.C.); (T.B.M.H.); (S.E.M.H.)
- Department of Surgery, University of Bonn, 53113 Bonn, Germany
| | - Sigrid E. M. Heinsbroek
- Tytgat Institute for Liver and Intestinal Research, Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam University Medical Centers, Location AMC, University of Amsterdam, 1105 BK Amsterdam, The Netherlands; (S.R.); (P.H.P.v.H.); (C.V.); (O.W.); (P.C.); (T.B.M.H.); (S.E.M.H.)
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18
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El Kharraz S, Dubois V, van Royen ME, Houtsmuller AB, Pavlova E, Atanassova N, Nguyen T, Voet A, Eerlings R, Handle F, Prekovic S, Smeets E, Moris L, Devlies W, Ohlsson C, Poutanen M, Verstrepen KJ, Carmeliet G, Launonen KM, Helminen L, Palvimo JJ, Libert C, Vanderschueren D, Helsen C, Claessens F. The androgen receptor depends on ligand-binding domain dimerization for transcriptional activation. EMBO Rep 2021; 22:e52764. [PMID: 34661369 DOI: 10.15252/embr.202152764] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 09/21/2021] [Accepted: 09/23/2021] [Indexed: 01/28/2023] Open
Abstract
Whereas dimerization of the DNA-binding domain of the androgen receptor (AR) plays an evident role in recognizing bipartite response elements, the contribution of the dimerization of the ligand-binding domain (LBD) to the correct functioning of the AR remains unclear. Here, we describe a mouse model with disrupted dimerization of the AR LBD (ARLmon/Y ). The disruptive effect of the mutation is demonstrated by the feminized phenotype, absence of male accessory sex glands, and strongly affected spermatogenesis, despite high circulating levels of testosterone. Testosterone replacement studies in orchidectomized mice demonstrate that androgen-regulated transcriptomes in ARLmon/Y mice are completely lost. The mutated AR still translocates to the nucleus and binds chromatin, but does not bind to specific AR binding sites. In vitro studies reveal that the mutation in the LBD dimer interface also affects other AR functions such as DNA binding, ligand binding, and co-regulator binding. In conclusion, LBD dimerization is crucial for the development of AR-dependent tissues through its role in transcriptional regulation in vivo. Our findings identify AR LBD dimerization as a possible target for AR inhibition.
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Affiliation(s)
- Sarah El Kharraz
- Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Vanessa Dubois
- Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
| | | | | | - Ekatarina Pavlova
- Institute of Experimental Morphology Pathology and Anthropology with Museum, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Nina Atanassova
- Institute of Experimental Morphology Pathology and Anthropology with Museum, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Tien Nguyen
- Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Arnout Voet
- Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Roy Eerlings
- Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Florian Handle
- Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Stefan Prekovic
- Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium.,Division of Oncogenomics, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Elien Smeets
- Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Lisa Moris
- Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Wout Devlies
- Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Claes Ohlsson
- Department of Internal Medicine and Clinical Nutrition, University of Gothenburg, Gothenburg, Sweden
| | - Matti Poutanen
- Department of Internal Medicine and Clinical Nutrition, University of Gothenburg, Gothenburg, Sweden.,Research Centre for Integrative Physiology and Pharmacology, Turku Center for Disease Modeling, University of Turku, Turku, Finland
| | - Kevin J Verstrepen
- VIB Laboratory for Systems Biology and KU Leuven Laboratory for Genetics and Genomics, VIB - KU Leuven Center for Microbiology, Leuven, Belgium
| | - Geert Carmeliet
- Department of Chronic Diseases and Metabolism, KU Leuven, Leuven, Belgium
| | | | - Laura Helminen
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Jorma J Palvimo
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Claude Libert
- VIB Center for Inflammation Research, VIB, Ghent, Belgium.,Department for Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | | | - Christine Helsen
- Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Frank Claessens
- Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
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19
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Vandewalle J, Timmermans S, Paakinaho V, Vancraeynest L, Dewyse L, Vanderhaeghen T, Wallaeys C, Van Wyngene L, Van Looveren K, Nuyttens L, Eggermont M, Dewaele S, Velho TR, Moita LF, Weis S, Sponholz C, van Grunsven LA, Dewerchin M, Carmeliet P, De Bosscher K, Van de Voorde J, Palvimo JJ, Libert C. Combined glucocorticoid resistance and hyperlactatemia contributes to lethal shock in sepsis. Cell Metab 2021; 33:1763-1776.e5. [PMID: 34302744 DOI: 10.1016/j.cmet.2021.07.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 05/05/2021] [Accepted: 07/01/2021] [Indexed: 12/18/2022]
Abstract
Sepsis is a potentially lethal syndrome resulting from a maladaptive response to infection. Upon infection, glucocorticoids are produced as a part of the compensatory response to tolerate sepsis. This tolerance is, however, mitigated in sepsis due to a quickly induced glucocorticoid resistance at the level of the glucocorticoid receptor. Here, we show that defects in the glucocorticoid receptor signaling pathway aggravate sepsis pathophysiology by lowering lactate clearance and sensitizing mice to lactate-induced toxicity. The latter is exerted via an uncontrolled production of vascular endothelial growth factor, resulting in vascular leakage and collapse with severe hypotension, organ damage, and death, all being typical features of a lethal form of sepsis. In conclusion, sepsis leads to glucocorticoid receptor failure and hyperlactatemia, which collectively leads to a lethal vascular collapse.
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Affiliation(s)
- Jolien Vandewalle
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Steven Timmermans
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Ville Paakinaho
- Institute of Biomedicine, University of Eastern Finland, Kuopio 70210, Finland
| | - Lies Vancraeynest
- Department Basic and Applied Medical Sciences, Ghent University, Ghent 9000, Belgium
| | - Liza Dewyse
- Liver Cell Biology research group, Vrije Universiteit Brussel (VUB), Brussels 1090, Belgium
| | - Tineke Vanderhaeghen
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Charlotte Wallaeys
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Lise Van Wyngene
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Kelly Van Looveren
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Louise Nuyttens
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Melanie Eggermont
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Sylviane Dewaele
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium
| | - Tiago R Velho
- Instituto Gulbenkian de Ciência, Oeiras 2780-156, Portugal
| | - Luis F Moita
- Instituto Gulbenkian de Ciência, Oeiras 2780-156, Portugal
| | - Sebastian Weis
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Friedrich-Schiller University, Jena 07743, Germany; Institute for Infectious Diseases and Infection Control, Jena University Hospital, Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital and Center for Sepsis Control and Care, Jena University Hospital, Jena 07749, Germany
| | - Christoph Sponholz
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Friedrich-Schiller University, Jena 07743, Germany
| | - Leo A van Grunsven
- Liver Cell Biology research group, Vrije Universiteit Brussel (VUB), Brussels 1090, Belgium
| | - Mieke Dewerchin
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, VIB Center for Cancer Biology, VIB, Leuven 3000, Belgium
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, VIB Center for Cancer Biology, VIB, Leuven 3000, Belgium; Laboratory of Angiogenesis and Vascular Heterogeneity, Department of Biomedicine, Aarhus University, Aarhus 8000, Denmark; State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, Guangdong, P.R. China
| | - Karolien De Bosscher
- Translational Nuclear Receptor Research lab, VIB Center for Medical Biotechnology, VIB, Ghent 9052, Belgium; Department of Biomolecular Medicine, Ghent University, Ghent 9052, Belgium
| | - Johan Van de Voorde
- Department Basic and Applied Medical Sciences, Ghent University, Ghent 9000, Belgium
| | - Jorma J Palvimo
- Institute of Biomedicine, University of Eastern Finland, Kuopio 70210, Finland
| | - Claude Libert
- VIB Center for Inflammation Research, VIB, Ghent 9052, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium.
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20
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Van Wyngene L, Vanderhaeghen T, Petta I, Timmermans S, Corbeels K, Van der Schueren B, Vandewalle J, Van Looveren K, Wallaeys C, Eggermont M, Dewaele S, Catrysse L, van Loo G, Beyaert R, Vangoitsenhoven R, Nakayama T, Tavernier J, De Bosscher K, Libert C. ZBTB32 performs crosstalk with the glucocorticoid receptor and is crucial in glucocorticoid responses to starvation. iScience 2021; 24:102790. [PMID: 34337361 PMCID: PMC8324811 DOI: 10.1016/j.isci.2021.102790] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 03/25/2021] [Accepted: 06/24/2021] [Indexed: 12/15/2022] Open
Abstract
The hypothalamic-pituitary-adrenal (HPA) axis forms a complex neuroendocrine system that regulates the body’s response to stress such as starvation. In contrast with the glucocorticoid receptor (GR), Zinc finger and BTB domain containing 32 (ZBTB32) is a transcription factor with poorly described functional relevance in physiology. This study shows that ZBTB32 is essential for the production of glucocorticoids (GCs) in response to starvation, since ZBTB32−/− mice fail to increase their GC production in the absence of nutrients. In terms of mechanism, GR-mediated upregulation of adrenal Scarb1 gene expression was absent in ZBTB32−/− mice, implicating defective cholesterol import as the cause of the poor GC synthesis. These lower GC levels are further associated with aberrations in the metabolic adaptation to starvation, which could explain the progressive weight gain of ZBTB32−/− mice. In conclusion, ZBTB32 performs a crosstalk with the GR in the metabolic adaptation to starvation via regulation of adrenal GC production. ZBTB32 is involved in the glucocorticoid production in response to starvation GR-mediated upregulation of adrenal Scarb1 regulates cholesterol import The weight gain of ZBTB32−/− mice is associated with aberrant metabolic adaptations
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Affiliation(s)
- Lise Van Wyngene
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Tineke Vanderhaeghen
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Ioanna Petta
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Ghent Gut Inflammation Group (GGIG), Ghent University, 9000 Ghent, Belgium.,Department of Rheumatology, Ghent University, 9000 Ghent, Belgium
| | - Steven Timmermans
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Katrien Corbeels
- Department of Chronic Diseases and Metabolism - Endocrinology, KU Leuven, Leuven, Belgium
| | - Bart Van der Schueren
- Department of Chronic Diseases and Metabolism - Endocrinology, KU Leuven, Leuven, Belgium
| | - Jolien Vandewalle
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Kelly Van Looveren
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Charlotte Wallaeys
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Melanie Eggermont
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Sylviane Dewaele
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Leen Catrysse
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Geert van Loo
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium.,Ghent Gut Inflammation Group (GGIG), Ghent University, 9000 Ghent, Belgium
| | - Rudi Beyaert
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium.,Ghent Gut Inflammation Group (GGIG), Ghent University, 9000 Ghent, Belgium
| | - Roman Vangoitsenhoven
- Department of Chronic Diseases and Metabolism - Endocrinology, KU Leuven, Leuven, Belgium
| | - Toshinori Nakayama
- Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Jan Tavernier
- Center for Medical Biotechnology, VIB Center for Medical Biotechnology, 9000 Ghent, Belgium.,Cytokine Receptor Laboratory (CRL), Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, 3 Albert Baertsoenkaai, 9000 Ghent, Belgium
| | - Karolien De Bosscher
- Center for Medical Biotechnology, VIB Center for Medical Biotechnology, 9000 Ghent, Belgium.,Translational Nuclear Receptor Research Lab, Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, 3 Albert Baertsoenkaai,9000 Ghent, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB Center for Inflammation Research, 9000 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium.,Ghent Gut Inflammation Group (GGIG), Ghent University, 9000 Ghent, Belgium
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21
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Vanderhaeghen T, Beyaert R, Libert C. Bidirectional Crosstalk Between Hypoxia Inducible Factors and Glucocorticoid Signalling in Health and Disease. Front Immunol 2021; 12:684085. [PMID: 34149725 PMCID: PMC8211996 DOI: 10.3389/fimmu.2021.684085] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/19/2021] [Indexed: 12/11/2022] Open
Abstract
Glucocorticoid-induced (GC) and hypoxia-induced transcriptional responses play an important role in tissue homeostasis and in the regulation of cellular responses to stress and inflammation. Evidence exists that there is an important crosstalk between both GC and hypoxia effects. Hypoxia is a pathophysiological condition to which cells respond quickly in order to prevent metabolic shutdown and death. The hypoxia inducible factors (HIFs) are the master regulators of oxygen homeostasis and are responsible for the ability of cells to cope with low oxygen levels. Maladaptive responses of HIFs contribute to a variety of pathological conditions including acute mountain sickness (AMS), inflammation and neonatal hypoxia-induced brain injury. Synthetic GCs which are analogous to the naturally occurring steroid hormones (cortisol in humans, corticosterone in rodents), have been used for decades as anti-inflammatory drugs for treating pathological conditions which are linked to hypoxia (i.e. asthma, ischemic injury). In this review, we investigate the crosstalk between the glucocorticoid receptor (GR), and HIFs. We discuss possible mechanisms by which GR and HIF influence one another, in vitro and in vivo, and the therapeutic effects of GCs on HIF-mediated diseases.
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Affiliation(s)
- Tineke Vanderhaeghen
- Centre for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Rudi Beyaert
- Centre for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Centre for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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22
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El Kharraz S, Helsen C, Dubois V, Libert C, Poutanen M, Claessens F. LBD Dimerization of the Androgen Receptor but Not N/C Interaction Is Crucial for Normal Male Development in Mice. J Endocr Soc 2021. [PMCID: PMC8089729 DOI: 10.1210/jendso/bvab048.1675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The androgen receptor (AR) is a nuclear receptor with a main role in the development and maintenance of the male phenotype. To execute its role as transcription factor, the AR forms homodimers. Three dimerization modes have been described for the AR: one via the DNA binding domain, a second via the ligand binding domain (LBD) and a third via interactions between the LBD and the aminoterminus of the AR (N/C). Based exclusively on in vitro data, all three dimerization modes seem to contribute to full AR activity, albeit to a different extent. The in vivo role of the dimerization modes, however, remains unknown. To study the physiological relevance, we generated two mouse models using a CRISPR/Cas9 approach, in which either the N/C interaction (ARNoC) or LBD dimerization (ARLmon) was disrupted. Surprisingly, the male ARNoC mice have a normal phenotype, indicating that the N/C interaction is not crucial for male development. In contrast, ARLmon males have an external female phenotype with cryptorchid testes and high levels of circulating testosterone (T), androstenedione and luteinizing hormone (LH) (6-, 13- and 45-fold higher, respectively). They have no prostate, seminal vesicles or epididymis, illustrating the importance of LBD dimerization during male development. Phenotyping the ARLmon model furthermore provided evidence of a crucial role for the AR in bone homeostasis as well as steroidogenesis. The ARLmon males display a severe bone phenotype, similar to that of complete AR knockout (ARKO) mice. The bone phenotype of ARKO was postulated to be mainly due to lower estrogen levels. However, in contrast to ARKO mice, ARLmon mice have high circulating levels of T, which can still function as prohormone for estradiol and support bone function via the ERα. Immunohistological analysis of ARLmon testes showed hyperplasia of the Leydig cells and residual spermatogenesis. Analysis of the steroidogenic pathway revealed that while the expression of most genes is increased, the expression of Hsd17b3, encoding the enzyme responsible for conversion of androstenedione into T, is low in ARLmon testis. Reporter assays confirmed that the promotor of this gene is indeed upregulated by the AR itself. In conclusion, our work uncovers the physiological role of the N/C interaction and LBD dimerization of the AR. It furthermore demonstrates a direct role for AR in male bone development independent of T aromatization into estrogens. Finally, we show that the AR controls the final step in the synthesis of its own ligand. In contrast to the in vitro data, N/C interaction is not crucial for male development in vivo. The ARLmon model illustrates that LBD dimerization could be an excellent new therapeutic target for inhibiting AR activity for example in advanced prostate cancer that has developed resistance to the current AR-targeting therapies.
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23
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Virga F, Cappellesso F, Stijlemans B, Henze AT, Trotta R, Van Audenaerde J, Mirchandani AS, Sanchez-Garcia MA, Vandewalle J, Orso F, Riera-Domingo C, Griffa A, Ivan C, Smits E, Laoui D, Martelli F, Langouche L, Van den Berghe G, Feron O, Ghesquière B, Prenen H, Libert C, Walmsley SR, Corbet C, Van Ginderachter JA, Ivan M, Taverna D, Mazzone M. Macrophage miR-210 induction and metabolic reprogramming in response to pathogen interaction boost life-threatening inflammation. Sci Adv 2021; 7:7/19/eabf0466. [PMID: 33962944 DOI: 10.1126/sciadv.abf0466] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
Unbalanced immune responses to pathogens can be life-threatening although the underlying regulatory mechanisms remain unknown. Here, we show a hypoxia-inducible factor 1α-dependent microRNA (miR)-210 up-regulation in monocytes and macrophages upon pathogen interaction. MiR-210 knockout in the hematopoietic lineage or in monocytes/macrophages mitigated the symptoms of endotoxemia, bacteremia, sepsis, and parasitosis, limiting the cytokine storm, organ damage/dysfunction, pathogen spreading, and lethality. Similarly, pharmacologic miR-210 inhibition improved the survival of septic mice. Mechanistically, miR-210 induction in activated macrophages supported a switch toward a proinflammatory state by lessening mitochondria respiration in favor of glycolysis, partly achieved by downmodulating the iron-sulfur cluster assembly enzyme ISCU. In humans, augmented miR-210 levels in circulating monocytes correlated with the incidence of sepsis, while serum levels of monocyte/macrophage-derived miR-210 were associated with sepsis mortality. Together, our data identify miR-210 as a fine-tuning regulator of macrophage metabolism and inflammatory responses, suggesting miR-210-based therapeutic and diagnostic strategies.
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Affiliation(s)
- Federico Virga
- Laboratory of Tumor Inflammation and Angiogenesis, CCB, VIB, Leuven, Belgium
- Laboratory of Tumor Inflammation and Angiogenesis, CCB, Department of Oncology, KU Leuven, Leuven, Belgium
- Molecular Biotechnology Center, University of Torino, Torino, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Federica Cappellesso
- Laboratory of Tumor Inflammation and Angiogenesis, CCB, VIB, Leuven, Belgium
- Laboratory of Tumor Inflammation and Angiogenesis, CCB, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Benoit Stijlemans
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Laboratory, VIB Center for Inflammation Research, Brussels, Belgium
| | - Anne-Theres Henze
- Laboratory of Tumor Inflammation and Angiogenesis, CCB, VIB, Leuven, Belgium
- Laboratory of Tumor Inflammation and Angiogenesis, CCB, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Rosa Trotta
- Laboratory of Tumor Inflammation and Angiogenesis, CCB, VIB, Leuven, Belgium
- Laboratory of Tumor Inflammation and Angiogenesis, CCB, Department of Oncology, KU Leuven, Leuven, Belgium
| | | | - Ananda S Mirchandani
- University of Edinburgh Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Manuel A Sanchez-Garcia
- University of Edinburgh Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | | | - Francesca Orso
- Molecular Biotechnology Center, University of Torino, Torino, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Carla Riera-Domingo
- Laboratory of Tumor Inflammation and Angiogenesis, CCB, VIB, Leuven, Belgium
- Laboratory of Tumor Inflammation and Angiogenesis, CCB, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Alberto Griffa
- Molecular Biotechnology Center, University of Torino, Torino, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Cristina Ivan
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
- Center for RNA Interference and Non-Coding RNA, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Evelien Smits
- CORE, University of Antwerp, Wilrijk, Antwerp, Belgium
| | - Damya Laoui
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Laboratory, VIB Center for Inflammation Research, Brussels, Belgium
| | - Fabio Martelli
- Laboratory of Molecular Cardiology, IRCCS Policlinico San Donato, San Donato Milanese, Milan, Italy
| | - Lies Langouche
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium
| | - Greet Van den Berghe
- Clinical Division and Laboratory of Intensive Care Medicine, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium
| | - Olivier Feron
- FATH, IREC, Université Catholique de Louvain, Brussels, Belgium
| | - Bart Ghesquière
- Metabolomics Core Facility, Center for Cancer Biology, VIB, Leuven, Belgium
- Metabolomics Core Facility, Center for Cancer Biology, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Hans Prenen
- CORE, University of Antwerp, Wilrijk, Antwerp, Belgium
- University Hospital Antwerp, Edegem, Belgium
| | | | - Sarah R Walmsley
- University of Edinburgh Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Cyril Corbet
- FATH, IREC, Université Catholique de Louvain, Brussels, Belgium
| | - Jo A Van Ginderachter
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Myeloid Cell Immunology Laboratory, VIB Center for Inflammation Research, Brussels, Belgium
| | - Mircea Ivan
- Department of Medicine, Indiana University, School of Medicine, Indianapolis, IN 46202, USA
| | - Daniela Taverna
- Molecular Biotechnology Center, University of Torino, Torino, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Massimiliano Mazzone
- Laboratory of Tumor Inflammation and Angiogenesis, CCB, VIB, Leuven, Belgium.
- Laboratory of Tumor Inflammation and Angiogenesis, CCB, Department of Oncology, KU Leuven, Leuven, Belgium
- Molecular Biotechnology Center, University of Torino, Torino, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
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24
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Timmermans S, Libert C. Ratpost: a searchable database of protein-inactivating sequence variations in 40 sequenced rat-inbred strains. Mamm Genome 2021; 32:1-11. [PMID: 33481094 DOI: 10.1007/s00335-020-09853-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 11/18/2020] [Indexed: 10/22/2022]
Abstract
Rat-inbred strains are essential as scientific tools. We have analyzed the publicly available genome sequences of 40 rat-inbred strains and provide an overview of sequence variations leading to amino acid changes in protein-coding genes, premature STOP codons or loss of STOP codons, and short in-frame insertions and deletions of all protein-coding genes across all these inbred lines. We provide an overview of the predicted impact on protein function of all these affected proteins in the database, by comparing their sequence with the sequences of the rat reference strain BN/SsNHsdMcwi. We also investigate the flaws of the protein-coding sequences of this reference strain itself, by comparing them with a consensus genome. These data can be retrieved via a searchable website (Ratpost.be) and allow a global, better interpretation of genetic background effects and a source of naturally defective alleles in these 40 sequenced classical and high-priority rat-inbred strains.
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Affiliation(s)
- Steven Timmermans
- VIB-UGent Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- VIB-UGent Center for Inflammation Research, Ghent, Belgium. .,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
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25
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Abstract
Sepsis causes unacceptably high amounts of deaths worldwide. It is a huge unmet medical need, and new therapeutic interventions for sepsis and septic shock are urgently needed. By studying the mechanism by which a bacterial protein undermines the inflammatory function of macrophages, Kim et al, in the last issue of EMBO Molecular Medicine, have developed a new therapeutic protein drug, which appears to have very promising protective activities in a well-validated and aggressive polymicrobial sepsis model in mice. The chimeric protein is thought to limit macrophage inflammation while activating phagocytosis, and so, it hits two macrophage pathways at once.
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Affiliation(s)
- Tineke Vanderhaeghen
- Center for Inflammation ResearchVIBGhentBelgium
- Department of Biomedical Molecular BiologyGhent UniversityGhentBelgium
| | - Charlotte Wallaeys
- Center for Inflammation ResearchVIBGhentBelgium
- Department of Biomedical Molecular BiologyGhent UniversityGhentBelgium
| | - Claude Libert
- Center for Inflammation ResearchVIBGhentBelgium
- Department of Biomedical Molecular BiologyGhent UniversityGhentBelgium
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26
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Souffriau J, Timmermans S, Vanderhaeghen T, Wallaeys C, Van Looveren K, Aelbrecht L, Dewaele S, Vandewalle J, Goossens E, Verbanck S, Boyen F, Eggermont M, De Commer L, De Rycke R, De Bruyne M, Tito R, Ballegeer M, Vandevyver S, Velho T, Moita LF, Hochepied T, De Bosscher K, Raes J, Van Immerseel F, Beyaert R, Libert C. Zinc inhibits lethal inflammatory shock by preventing microbe-induced interferon signature in intestinal epithelium. EMBO Mol Med 2020; 12:e11917. [PMID: 32914580 PMCID: PMC7539219 DOI: 10.15252/emmm.201911917] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 08/19/2020] [Accepted: 08/19/2020] [Indexed: 12/11/2022] Open
Abstract
The cytokine TNF drives inflammatory diseases, e.g., Crohn's disease. In a mouse model of TNF-induced systemic inflammatory response syndrome (SIRS), severe impact on intestinal epithelial cells (IECs) is observed. Zinc confers complete protection in this model. We found that zinc no longer protects in animals which lack glucocorticoids (GCs), or express mutant versions of their receptor GR in IECs, nor in mice which lack gut microbiota. RNA-seq studies in IECs showed that zinc caused reduction in expression of constitutive (STAT1-induced) interferon-stimulated response (ISRE) genes and interferon regulatory factor (IRF) genes. Since some of these genes are involved in TNF-induced cell death in intestinal crypt Paneth cells, and since zinc has direct effects on the composition of the gut microbiota (such as several Staphylococcus species) and on TNF-induced Paneth cell death, we postulate a new zinc-related anti-inflammatory mechanism. Zinc modulates the gut microbiota, causing less induction of ISRE/IRF genes in crypt cells, less TNF-induced necroptosis in Paneth cells, and less fatal evasion of gut bacteria into the system.
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Affiliation(s)
- Jolien Souffriau
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Steven Timmermans
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Tineke Vanderhaeghen
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Charlotte Wallaeys
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Kelly Van Looveren
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Lindsy Aelbrecht
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sylviane Dewaele
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jolien Vandewalle
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Evy Goossens
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Serge Verbanck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Filip Boyen
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Melanie Eggermont
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Lindsey De Commer
- Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium.,VIB-KU Leuven Center for Microbiology, Leuven, Belgium
| | - Riet De Rycke
- Department of Biomedical Molecular Biology and Expertise Centre for Transmission Electron Microscopy, Ghent University, Ghent, Belgium.,VIB Center for Inflammation Research and BioImaging Core, VIB, Ghent, Belgium
| | - Michiel De Bruyne
- Department of Biomedical Molecular Biology and Expertise Centre for Transmission Electron Microscopy, Ghent University, Ghent, Belgium.,VIB Center for Inflammation Research and BioImaging Core, VIB, Ghent, Belgium
| | - Raul Tito
- Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium.,VIB-KU Leuven Center for Microbiology, Leuven, Belgium
| | - Marlies Ballegeer
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sofie Vandevyver
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Tiago Velho
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | | | - Tino Hochepied
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Karolien De Bosscher
- VIB Center for Medical Biotechnology, Ghent, Belgium.,Department of Biochemistry, Ghent University, Ghent, Belgium
| | - Jeroen Raes
- Department of Microbiology and Immunology, Rega Institute, KU Leuven, Leuven, Belgium.,VIB-KU Leuven Center for Microbiology, Leuven, Belgium
| | - Filip Van Immerseel
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Rudi Beyaert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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27
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Abstract
Sepsis is a highly lethal syndrome resulting from dysregulated immune and metabolic responses to infection, thereby compromising host homeostasis. Activation of the hypothalamic–pituitary–adrenal (HPA) axis and subsequently adrenocortical glucocorticoid (GC) production during sepsis are important regulatory processes to maintain homeostasis. Multiple preclinical studies have proven the pivotal role of endogenous GCs in tolerance against sepsis by counteracting several of the sepsis characteristics, such as excessive inflammation, vascular defects, and hypoglycemia. Sepsis is however often complicated by dysfunction of the HPA axis, resulting from critical-illness-related corticosteroid insufficiency (CIRCI) and GC resistance. Therefore, GCs have been tested as an adjunctive therapy in sepsis and septic shock in different randomized clinical trials (RCTs). Nonetheless, these studies produced conflicting results. Interestingly, adding vitamin C and thiamin to GC therapy enhances the effects of GCs, probably by reducing GC resistance, and this results in an impressive reduction in sepsis mortality as was shown in two recent preliminary retrospective before–after studies. Multiple RCTs are currently underway to validate this new combination therapy in sepsis.
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Affiliation(s)
- Jolien Vandewalle
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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28
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Van Looveren K, Timmermans S, Vanderhaeghen T, Wallaeys C, Ballegeer M, Souffriau J, Eggermont M, Vandewalle J, Van Wyngene L, De Bosscher K, Libert C. Glucocorticoids limit lipopolysaccharide-induced lethal inflammation by a double control system. EMBO Rep 2020; 21:e49762. [PMID: 32383538 DOI: 10.15252/embr.201949762] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 04/10/2020] [Accepted: 04/15/2020] [Indexed: 01/03/2023] Open
Abstract
Lipopolysaccharides (LPS) can lead to a lethal endotoxemia, which is a systemic inflammatory response syndrome (SIRS) characterized by a systemic release of cytokines, such as TNF. Endotoxemia is studied intensely, as a model system of Gram-negative infections. LPS- and TNF-induced SIRS involve a strong induction of interferon-stimulated genes (ISGs), some of which cause cell death in the intestinal epithelium cells (IECs). It is well known that glucocorticoids (GCs) protect against endotoxemia. By applying numerous mutant mouse lines, our data support a model whereby GCs, via their glucocorticoid receptor (GR), apply two key mechanisms to control endotoxemia, (i) at the level of suppression of TNF production in a GR monomer-dependent way in macrophages and (ii) at the level of inhibition of TNFR1-induced ISG gene expression and necroptotic cell death mediators in IECs in a GR dimer-dependent way. Our data add new important insights to the understanding of the role of TNF in endotoxemia and the two separate key roles of GCs in suppressing TNF production and activity.
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Affiliation(s)
- Kelly Van Looveren
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Steven Timmermans
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Tineke Vanderhaeghen
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Charlotte Wallaeys
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Marlies Ballegeer
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jolien Souffriau
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Melanie Eggermont
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jolien Vandewalle
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Lise Van Wyngene
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Karolien De Bosscher
- Department of Biochemistry, Ghent University, Ghent, Belgium.,Receptor Research Laboratories, Nuclear Receptor Lab, Medical Biotechnology Center, VIB, Ghent, Belgium
| | - Claude Libert
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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29
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Vandewalle J, Vanderhaeghen T, Beyaert R, Libert C. Taking the STING Out of Sepsis? Cell Host Microbe 2020; 27:491-493. [PMID: 32272071 DOI: 10.1016/j.chom.2020.03.016] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
In this issue of Cell Host & Microbe, Zhang et al. use a sepsis mouse model to show that macrophage-specific release of coagulation factor F3 depends on pathogen detection and responses mediated by TMEM173/STING. The therapeutic power of targeting TMEM173/STING-F3 is evident in mice, but will it penetrate the sepsis bedside?
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Affiliation(s)
- Jolien Vandewalle
- Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Tineke Vanderhaeghen
- Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Rudi Beyaert
- Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
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30
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Vandewalle J, Libert C. GILZ in sepsis: "Poor is the pupil who does not surpass his master". Eur J Immunol 2020; 50:490-493. [PMID: 32103492 DOI: 10.1002/eji.202048582] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 02/13/2020] [Accepted: 02/25/2020] [Indexed: 01/02/2023]
Abstract
With the legendary saying of Leonardo da Vinci in the title, we suggest that Glucocorticoid Induced Leucine Zipper (GILZ) may have more promising effects against polymicrobial sepsis, than glucocorticoids (GC). Indeed, the use of GCs in sepsis remains a matter of debate. The rationale for their use in sepsis is to modulate the exaggerated inflammatory response while maintaining innate immunity. However, GC resistance and side-effects limit their therapeutic value in sepsis. Hence, there is a growing interest in understanding the mechanisms by which GCs modulate immune responses upon infection. In this issue of the European Journal of Immunology, Ellouze et al. provide data demonstrating that deregulated expression of GILZ, a GC-induced protein, in monocytes/macrophages (M/M) recovered from septic shock patients may contribute to the pathogenesis. Furthermore, the authors demonstrate that GILZ overexpression in M/M improves outcome in septic animals by limiting systemic inflammation while increasing bacterial clearance. Overall, these data provide evidence that GCs may modulate immune responses via GILZ and that GILZ is a valuable alternative for GC therapy in sepsis.
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Affiliation(s)
- Jolien Vandewalle
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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31
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Libert C, Ayala A, Bauer M, Cavaillon JM, Deutschman C, Frostell C, Knapp S, Kozlov AV, Wang P, Osuchowski MF, Remick DG. Part II: Minimum Quality Threshold in Preclinical Sepsis Studies (MQTiPSS) for Types of Infections and Organ Dysfunction Endpoints. Shock 2020; 51:23-32. [PMID: 30106873 DOI: 10.1097/shk.0000000000001242] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Although the clinical definitions of sepsis and recommended treatments are regularly updated, a systematic review has not been done for preclinical models. To address this deficit, a Wiggers-Bernard Conference on preclinical sepsis modeling reviewed the 260 most highly cited papers between 2003 and 2012 using sepsis models to create a series of recommendations. This Part II report provides recommendations for the types of infections and documentation of organ injury in preclinical sepsis models. Concerning the types of infections, the review showed that the cecal ligation and puncture model was used for 44% of the studies while 40% injected endotoxin. Recommendation #8 (numbered sequentially from Part I): endotoxin injection should not be considered as a model of sepsis; live bacteria or fungal strains derived from clinical isolates are more appropriate. Recommendation #9: microorganisms should replicate those typically found in human sepsis. Sepsis-3 states that sepsis is life-threatening organ dysfunction caused by a dysregulated host response to infection, but the review of the papers showed limited attempts to document organ dysfunction. Recommendation #10: organ dysfunction definitions should be used in preclinical models. Recommendation #11: not all activities in an organ/system need to be abnormal to verify organ dysfunction. Recommendation #12: organ dysfunction should be measured in an objective manner using reproducible scoring systems. Recommendation #13: not all experiments must measure all parameters of organ dysfunction, but investigators should attempt to fully capture as much information as possible. These recommendations are proposed as "best practices" for animal models of sepsis.
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Affiliation(s)
- Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Ghent University, Ghent, Belgium
| | - Alfred Ayala
- Rhode Island Hospital & Alpert School of Medicine at Brown University, Providence, Rhode Island
| | | | | | - Clifford Deutschman
- Feinstein Institute for Medical Research, Northwell Health, Manhasset, New York
| | - Claes Frostell
- Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
| | | | - Andrey V Kozlov
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Vienna, Austria
| | - Ping Wang
- Feinstein Institute for Medical Research, Manhasset, New York
| | - Marcin F Osuchowski
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Vienna, Austria
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Kim SW, Goossens A, Libert C, Van Immerseel F, Staal J, Beyaert R. Phytohormones: Multifunctional nutraceuticals against metabolic syndrome and comorbid diseases. Biochem Pharmacol 2020; 175:113866. [PMID: 32088261 DOI: 10.1016/j.bcp.2020.113866] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 12/15/2019] [Accepted: 02/18/2020] [Indexed: 12/12/2022]
Abstract
Metabolic syndrome is characterized by the co-occurrence of diverse symptoms initiating the development of type 2 diabetes, cardiovascular diseases, and a variety of comorbid diseases. The complex constellation of numerous comorbidities makes it difficult to develop common therapeutic approaches that ameliorate these pathological features simultaneously. The plant hormones abscisic acid, salicylic acid, auxin, and cytokinins, have shown promising anti-inflammatory and pro-metabolic effects that could mitigate several disorders relevant to metabolic syndrome. Intriguingly, besides plants, human cells and gut microbes also endogenously produce these molecules, indicating a role in the complex interplay between inflammatory responses associated with metabolic syndrome, the gut microbiome, and nutrition. Here, we introduce how bioactive phytohormones can be generated endogenously and through the gut microbiome. These molecules subsequently influence immune responses and metabolism. We also elaborate on how phytohormones can beneficially modulate metabolic syndrome comorbidities, and propose them as nutraceuticals.
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Affiliation(s)
- Seo Woo Kim
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; VIB-UGent Center for Plant Systems Biology, VIB, Ghent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Alain Goossens
- VIB-UGent Center for Plant Systems Biology, VIB, Ghent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Claude Libert
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Filip Van Immerseel
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Jens Staal
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
| | - Rudi Beyaert
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
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Vanderhaeghen T, Vandewalle J, Libert C. Hypoxia-inducible factors in metabolic reprogramming during sepsis. FEBS J 2020; 287:1478-1495. [PMID: 31970890 DOI: 10.1111/febs.15222] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 12/20/2019] [Accepted: 01/20/2020] [Indexed: 12/15/2022]
Abstract
Sepsis is a highly heterogeneous syndrome that is caused by an imbalanced host response to infection. Despite huge investments, sepsis remains a contemporary threat with significant burden on health systems. Vascular dysfunction and elevated oxygen consumption by highly metabolically active immune cells result in tissue hypoxia during inflammation. The transcription factor hypoxia-inducible factor-1a (HIF1α), and its family members, plays an important role in cellular metabolism and adaptation to cellular stress caused by hypoxia. In this review, we discuss the role of HIF in sepsis. We show possible mechanisms by which the inflammatory response activated during sepsis affects the HIF pathway. The activated HIF pathway in turn changes the metabolism of both innate and adaptive immune cells. As HIF expression in leukocytes of septic patients can be directly linked with mortality, we discuss multiple ways of interfering with the HIF signaling pathway.
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Affiliation(s)
- Tineke Vanderhaeghen
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Jolien Vandewalle
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
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34
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Van Wyngene L, Vanderhaeghen T, Timmermans S, Vandewalle J, Van Looveren K, Souffriau J, Wallaeys C, Eggermont M, Ernst S, Van Hamme E, Gonçalves A, Eelen G, Remmerie A, Scott CL, Rombouts C, Vanhaecke L, De Bus L, Decruyenaere J, Carmeliet P, Libert C. Hepatic PPARα function and lipid metabolic pathways are dysregulated in polymicrobial sepsis. EMBO Mol Med 2020; 12:e11319. [PMID: 31916705 PMCID: PMC7005534 DOI: 10.15252/emmm.201911319] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 11/28/2019] [Accepted: 11/29/2019] [Indexed: 12/14/2022] Open
Abstract
Despite intensive research and constant medical progress, sepsis remains one of the most urgent unmet medical needs of today. Most studies have been focused on the inflammatory component of the disease; however, recent advances support the notion that sepsis is accompanied by extensive metabolic perturbations. During times of limited caloric intake and high energy needs, the liver acts as the central metabolic hub in which PPARα is crucial to coordinate the breakdown of fatty acids. The role of hepatic PPARα in liver dysfunction during sepsis has hardly been explored. We demonstrate that sepsis leads to a starvation response that is hindered by the rapid decline of hepatic PPARα levels, causing excess free fatty acids, leading to lipotoxicity, and glycerol. In addition, treatment of mice with the PPARα agonist pemafibrate protects against bacterial sepsis by improving hepatic PPARα function, reducing lipotoxicity and tissue damage. Since lipolysis is also increased in sepsis patients and pemafibrate protects after the onset of sepsis, these findings may point toward new therapeutic leads in sepsis.
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Affiliation(s)
- Lise Van Wyngene
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Tineke Vanderhaeghen
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Steven Timmermans
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jolien Vandewalle
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Kelly Van Looveren
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jolien Souffriau
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Charlotte Wallaeys
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Melanie Eggermont
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sam Ernst
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Evelien Van Hamme
- Bio Imaging Core, VIB Center for Inflammation Research, Ghent, Belgium
| | - Amanda Gonçalves
- Bio Imaging Core, VIB Center for Inflammation Research, Ghent, Belgium
| | - Guy Eelen
- Laboratory of Angiogenesis and Vascular Biology, VIB Center for Cancer Biology, VIB, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, Leuven, Belgium
| | - Anneleen Remmerie
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Charlotte L Scott
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Caroline Rombouts
- Faculty of Veterinary Medicine, Department of Veterinary Public Health and Food Safety, Laboratory of Chemical Analysis, Ghent University, Ghent, Belgium
| | - Lynn Vanhaecke
- Faculty of Veterinary Medicine, Department of Veterinary Public Health and Food Safety, Laboratory of Chemical Analysis, Ghent University, Ghent, Belgium
| | - Liesbet De Bus
- Department of Critical Care Medicine, Ghent University Hospital, Ghent, Belgium
| | - Johan Decruyenaere
- Department of Critical Care Medicine, Ghent University Hospital, Ghent, Belgium
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Biology, VIB Center for Cancer Biology, VIB, Leuven, Belgium.,Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology and Leuven Cancer Institute (LKI), KU Leuven, Leuven, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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Abstract
Sepsis, or blood poisoning, is a savage response of the body to infection. It can lead to organ failure, blood pressure decline, heart failure, and coma. Between 20 and 30 million people suffer from sepsis each year, leading to 8 million deaths. Although certain people are more at risk than others (young children, elderly), anyone can develop sepsis. Patients are resuscitated and treated with antibiotics, and their organ functions are supported. Despite the investment in sepsis research during the previous decades, successful clinical trials are scarce and sepsis remains one of the most difficult and deadly unmet medical needs of today. A study in this issue now provides new insight into sepsis and points to a therapeutic future [1 ].
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Affiliation(s)
- Kelly Van Looveren
- Center for Inflammation ResearchVIBGhentBelgium
- Department of Biomedical Molecular BiologyGhent UniversityGhentBelgium
| | - Lise Van Wyngene
- Center for Inflammation ResearchVIBGhentBelgium
- Department of Biomedical Molecular BiologyGhent UniversityGhentBelgium
| | - Claude Libert
- Center for Inflammation ResearchVIBGhentBelgium
- Department of Biomedical Molecular BiologyGhent UniversityGhentBelgium
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36
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Van Looveren K, Van Boxelaere M, Callaerts-Vegh Z, Libert C. Cognitive dysfunction in mice lacking proper glucocorticoid receptor dimerization. PLoS One 2019; 14:e0226753. [PMID: 31869387 PMCID: PMC6927629 DOI: 10.1371/journal.pone.0226753] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 12/03/2019] [Indexed: 11/18/2022] Open
Abstract
Stress is a major risk factor for depression and anxiety. One of the effects of stress is the (over-) activation of the hypothalamic-pituitary-adrenal (HPA) axis and the release of stress hormones such as glucocorticoids (GCs). Chronically increased stress hormone levels have been shown to have detrimental effects on neuronal networks by inhibiting neurotrophic processes particularly in the hippocampus proper. Centrally, GCs modulate metabolic as well as behavioural processes by activating two classes of corticoid receptors, high-affinity mineralocorticoid receptors (MR) and low-affinity glucocorticoid receptors (GR). Upon activation, GR can modulate gene transcription either as a monomeric protein, or as a dimer interacting directly with DNA. GR can also modulate cellular processes via non-genomic mechanisms, for example via a GPCR-protein interaction. We evaluated the behavioral phenotype in mice with a targeted mutation in the GR in a FVB/NJ background. In GRdim/dim mice, GR proteins form poor homodimers, while the GR monomer remains intact. We evaluated the effect of poor GR dimerization on hippocampus-dependent cognition as well as on exploration and emotional behavior under baseline and chronically increased stress hormone levels. We found that GRdim/dim mice did not behave differently from GRwt/wt littermates under baseline conditions. However, after chronic elevation of stress hormone levels, GRdim/dim mice displayed a significant impairment in hippocampus-dependent memory compared to GRwt/wt mice, which correlated with differential expression of hippocampal Bdnf/TrkB and Fkbp5.
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Affiliation(s)
- Kelly Van Looveren
- Center for Inflammation Research, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | | | - Zsuzsanna Callaerts-Vegh
- Laboratory of Biological Psychology, KULeuven, Leuven Belgium
- Leuven Research Institute for Neuroscience & Disease (LIND), Leuven, Belgium
- mINT Mouse Behavioural Core Facility, KULeuven, Leuven, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- * E-mail:
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37
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Vandewalle J, Steeland S, Van Ryckeghem S, Eggermont M, Van Wonterghem E, Vandenbroucke RE, Libert C. A Study of Cecal Ligation and Puncture-Induced Sepsis in Tissue-Specific Tumor Necrosis Factor Receptor 1-Deficient Mice. Front Immunol 2019; 10:2574. [PMID: 31787972 PMCID: PMC6856143 DOI: 10.3389/fimmu.2019.02574] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/17/2019] [Indexed: 12/13/2022] Open
Abstract
Sepsis is a complex syndrome resulting from a dysregulated immune response to an infection. Due to the high prevalence, morbidity, and mortality, there is a lot of interest in understanding pathways that play a role in sepsis, with a focus on the immune system. Tumor necrosis factor (TNF) is a pleiotropic pro-inflammatory cytokine and a master regulator of the immune system but clinical trials with TNF blockers in sepsis have failed to demonstrate significant protection. Since TNF stimulates two different receptors, TNF receptor 1 (TNFR1) and TNFR2, pan-TNF inhibition might be suboptimal since both receptors have opposite functions in polymicrobial sepsis. Therefore, we hypothesized that TNF has a dual role in sepsis, namely a mediating and a protective role, and that protection might be obtained by TNFR1-specific inhibition. We here confirmed that TNFR1−/− mice are protected in the sterile endotoxemia model, whereas TNFR1 deficiency did not protect in the cecal ligation and puncture (CLP)-induced polymicrobial sepsis model. Since whole body TNFR1 blockage might be deleterious because of the antibacterial function of TNF/TNFR1 signaling, we focused on the potential devastating role of TNF/TNFR1 signaling in specific cell types. We were interested in the gut epithelium, the endothelium, and hepatocytes using conditional TNFR1−/− mice, as these cell types have been shown to play a role in sepsis. However, none of these conditional knockout mice showed improved survival in the CLP model. We conclude that cell-specific targeting of TNFR1 to these cell types has no therapeutic future in septic peritonitis.
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Affiliation(s)
- Jolien Vandewalle
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sophie Steeland
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sara Van Ryckeghem
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Melanie Eggermont
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Elien Van Wonterghem
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Roosmarijn E Vandenbroucke
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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38
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Bougarne N, Mylka V, Ratman D, Beck IM, Thommis J, De Cauwer L, Tavernier J, Staels B, Libert C, De Bosscher K. Mechanisms Underlying the Functional Cooperation Between PPARα and GRα to Attenuate Inflammatory Responses. Front Immunol 2019; 10:1769. [PMID: 31447832 PMCID: PMC6695567 DOI: 10.3389/fimmu.2019.01769] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 07/12/2019] [Indexed: 12/20/2022] Open
Abstract
Glucocorticoids (GCs) act via the glucocorticoid receptor (NR3C1, GRα) to combat overshooting responses to infectious stimuli, including lipopolysaccharide (LPS). As such, GCs inhibit the activity of downstream effector cytokines, such as tumor necrosis factor (TNF). PPARα (NR1C1) is a nuclear receptor described to function on the crossroad between lipid metabolism and control of inflammation. In the current work, we have investigated the molecular mechanism by which GCs and PPARα agonists cooperate to jointly inhibit NF-κB-driven expression in A549 cells. We discovered a nuclear mechanism that predominantly targets Mitogen- and Stress-activated protein Kinase-1 activation upon co-triggering GRα and PPARα. In vitro GST-pull down data further support that the anti-inflammatory mechanism may additionally involve a non-competitive physical interaction between the p65 subunit of NF-κB, GRα, and PPARα. Finally, to study metabolic effector target cells common to both receptors, we overlaid the effect of GRα and PPARα crosstalk in mouse primary hepatocytes under LPS-induced inflammatory conditions on a genome-wide level. RNA-seq results revealed lipid metabolism genes that were upregulated and inflammatory genes that were additively downregulated. Validation at the cytokine protein level finally supported a consistent additive anti-inflammatory response in hepatocytes.
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Affiliation(s)
- Nadia Bougarne
- Translational Nuclear Receptor Research Lab, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,VIB Center for Medical Biotechnology, Ghent, Belgium
| | - Viacheslav Mylka
- Translational Nuclear Receptor Research Lab, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,VIB Center for Medical Biotechnology, Ghent, Belgium
| | - Dariusz Ratman
- Translational Nuclear Receptor Research Lab, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,VIB Center for Medical Biotechnology, Ghent, Belgium
| | - Ilse M Beck
- Translational Nuclear Receptor Research Lab, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,VIB Center for Medical Biotechnology, Ghent, Belgium.,Receptor Research Laboratories, Cytokine Receptor Lab, Ghent, Belgium.,Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011 - EGID, Lille, France.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,VIB Center for Inflammation Research, Ghent, Belgium
| | - Jonathan Thommis
- Translational Nuclear Receptor Research Lab, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,VIB Center for Medical Biotechnology, Ghent, Belgium
| | - Lode De Cauwer
- Translational Nuclear Receptor Research Lab, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,VIB Center for Medical Biotechnology, Ghent, Belgium
| | - Jan Tavernier
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,VIB Center for Medical Biotechnology, Ghent, Belgium.,Receptor Research Laboratories, Cytokine Receptor Lab, Ghent, Belgium
| | - Bart Staels
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011 - EGID, Lille, France
| | - Claude Libert
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,VIB Center for Inflammation Research, Ghent, Belgium
| | - Karolien De Bosscher
- Translational Nuclear Receptor Research Lab, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,VIB Center for Medical Biotechnology, Ghent, Belgium
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39
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Abstract
Glucocorticoids (GCs) are steroid hormones widely used for the treatment of inflammation, autoimmune diseases, and cancer. To exert their broad physiological and therapeutic effects, GCs bind to the GC receptor (GR) which belongs to the nuclear receptor superfamily of transcription factors. Despite their success, GCs are hindered by the occurrence of side effects and glucocorticoid resistance (GCR). Increased knowledge on GC and GR biology together with a better understanding of the molecular mechanisms underlying the GC side effects and GCR are necessary for improved GC therapy development. We here provide a general overview on the current insights in GC biology with a focus on GC synthesis, regulation and physiology, role in inflammation inhibition, and on GR function and plasticity. Furthermore, novel and selective therapeutic strategies are proposed based on recently recognized distinct molecular mechanisms of the GR. We will explain the SEDIGRAM concept, which was launched based on our research results.
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Affiliation(s)
- Steven Timmermans
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jolien Souffriau
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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40
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Steeland S, Gorlé N, Vandendriessche C, Balusu S, Brkic M, Van Cauwenberghe C, Van Imschoot G, Van Wonterghem E, De Rycke R, Kremer A, Lippens S, Stopa E, Johanson CE, Libert C, Vandenbroucke RE. Counteracting the effects of TNF receptor-1 has therapeutic potential in Alzheimer's disease. EMBO Mol Med 2019; 10:emmm.201708300. [PMID: 29472246 PMCID: PMC5887909 DOI: 10.15252/emmm.201708300] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Alzheimer's disease (AD) is the most common form of dementia, and neuroinflammation is an important hallmark of the pathogenesis. Tumor necrosis factor (TNF) might be detrimental in AD, though the results coming from clinical trials on anti‐TNF inhibitors are inconclusive. TNFR1, one of the TNF signaling receptors, contributes to the pathogenesis of AD by mediating neuronal cell death. The blood–cerebrospinal fluid (CSF) barrier consists of a monolayer of choroid plexus epithelial (CPE) cells, and AD is associated with changes in CPE cell morphology. Here, we report that TNF is the main inflammatory upstream mediator in choroid plexus tissue in AD patients. This was confirmed in two murine AD models: transgenic APP/PS1 mice and intracerebroventricular (icv) AβO injection. TNFR1 contributes to the morphological damage of CPE cells in AD, and TNFR1 abrogation reduces brain inflammation and prevents blood–CSF barrier impairment. In APP/PS1 transgenic mice, TNFR1 deficiency ameliorated amyloidosis. Ultimately, genetic and pharmacological blockage of TNFR1 rescued from the induced cognitive impairments. Our data indicate that TNFR1 is a promising therapeutic target for AD treatment.
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Affiliation(s)
- Sophie Steeland
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Nina Gorlé
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Charysse Vandendriessche
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sriram Balusu
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Marjana Brkic
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,Department of Neurobiology, Institute for Biological Research, University of Belgrade, Belgrade, Republic of Serbia
| | - Caroline Van Cauwenberghe
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Griet Van Imschoot
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Elien Van Wonterghem
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Riet De Rycke
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Anneke Kremer
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,VIB BioImaging Core, Ghent, Belgium
| | - Saskia Lippens
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,VIB BioImaging Core, Ghent, Belgium
| | - Edward Stopa
- Department of Pathology, Rhode Island Hospital, Providence, Rhode Island, USA.,Department of Neurosurgery, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Conrad E Johanson
- Department of Neurosurgery, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Claude Libert
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Roosmarijn E Vandenbroucke
- VIB Center for Inflammation Research, Ghent, Belgium .,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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41
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De Francesco D, Wit FW, Bürkle A, Oehlke S, Kootstra NA, Winston A, Franceschi C, Garagnani P, Pirazzini C, Libert C, Grune T, Weber D, Jansen EH, Sabin CA, Reiss P. Do people living with HIV experience greater age advancement than their HIV-negative counterparts? AIDS 2019; 33:259-268. [PMID: 30325781 PMCID: PMC6319574 DOI: 10.1097/qad.0000000000002063] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [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: 05/03/2018] [Accepted: 06/28/2018] [Indexed: 12/21/2022]
Abstract
OBJECTIVES Despite successful antiretroviral therapy, people living with HIV (PLWH) may show signs of premature/accentuated aging. We compared established biomarkers of aging in PLWH, appropriately chosen HIV-negative individuals, and blood donors, and explored factors associated with biological age advancement. DESIGN Cross-sectional analysis of 134 PLWH on suppressive antiretroviral therapy, 79 lifestyle-comparable HIV-negative controls aged 45 years or older from the Co-morBidity in Relation to AIDS (COBRA) cohort, and 35 age-matched blood donors. METHODS Biological age was estimated using a validated algorithm based on 10 biomarkers. Associations between 'age advancement' (biological minus chronological age) and HIV status/parameters, lifestyle, cytomegalovirus (CMV), hepatitis B (HBV) and hepatitis C virus (HCV) infections were investigated using linear regression. RESULTS The average (95% CI) age advancement was greater in both HIV-positive [13.2 (11.6-14.9) years] and HIV-negative [5.5 (3.8-7.2) years] COBRA participants compared with blood donors [-7.0 (-4.1 to -9.9) years, both P's < 0.001)], but also in HIV-positive compared with HIV-negative participants (P < 0.001). Chronic HBV, higher anti-CMV IgG titer and CD8 T-cell count were each associated with increased age advancement, independently of HIV-status/group. Among HIV-positive participants, age advancement was increased by 3.5 (0.1-6.8) years among those with nadir CD4+ T-cell count less than 200 cells/μl and by 0.1 (0.06-0.2) years for each additional month of exposure to saquinavir. CONCLUSION Both treated PLWH and lifestyle-comparable HIV-negative individuals show signs of age advancement compared with blood donors, to which persistent CMV, HBV co-infection and CD8+ T-cell activation may have contributed. Age advancement remained greatest in PLWH and was related to prior immunodeficiency and cumulative saquinavir exposure.
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Affiliation(s)
| | - Ferdinand W. Wit
- Department of Global Health, Academic Medical Center and Amsterdam Institute for Global Health and Development
- Stichting HIV Monitoring, Amsterdam, The Netherlands
| | - Alexander Bürkle
- Molecular Toxicology Group, University of Konstanz, Konstanz, Germany
| | - Sebastian Oehlke
- Molecular Toxicology Group, University of Konstanz, Konstanz, Germany
| | - Neeltje A. Kootstra
- Department of Experimental Immunology, Academic Medical Center, Amsterdam, The Netherlands
| | - Alan Winston
- Division of Infectious Diseases, Imperial College London, London, UK
| | - Claudio Franceschi
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum Universitá di Bologna, Bologna, Italy
| | - Paolo Garagnani
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum Universitá di Bologna, Bologna, Italy
| | - Chiara Pirazzini
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum Universitá di Bologna, Bologna, Italy
| | - Claude Libert
- Department of Biomedical Molecular Biology, Ghent University
- Center for Inflammation Research, Flanders Institute for Biotechnology, Ghent, Belgium
| | - Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition, Nuthetal, Germany
| | - Daniela Weber
- Department of Molecular Toxicology, German Institute of Human Nutrition, Nuthetal, Germany
| | - Eugène H.J.M. Jansen
- National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | | | - Peter Reiss
- Department of Global Health, Academic Medical Center and Amsterdam Institute for Global Health and Development
- Stichting HIV Monitoring, Amsterdam, The Netherlands
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42
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Osuchowski MF, Ayala A, Bahrami S, Bauer M, Boros M, Cavaillon JM, Chaudry IH, Coopersmith CM, Deutschman C, Drechsler S, Efron P, Frostell C, Fritsch G, Gozdzik W, Hellman J, Huber-Lang M, Inoue S, Knapp S, Kozlov AV, Libert C, Marshall JC, Moldawer LL, Radermacher P, Redl H, Remick DG, Singer M, Thiemermann C, Wang P, Wiersinga WJ, Xiao X, Zingarelli B. Minimum Quality Threshold in Pre-Clinical Sepsis Studies (MQTiPSS): an international expert consensus initiative for improvement of animal modeling in sepsis. Infection 2019; 46:687-691. [PMID: 30105433 PMCID: PMC6182493 DOI: 10.1007/s15010-018-1183-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Purpose Pre-clinical animal studies precede the majority of clinical trials. While the clinical sepsis definitions and recommended treatments are regularly updated, a systematic review of pre-clinical models of sepsis has not been done and clear modeling guidelines are lacking. To address this deficit, a Wiggers-Bernard Conference on pre-clinical sepsis modeling was held in Vienna in May, 2017. The conference goal was to identify limitations of pre-clinical sepsis models and to propose a set of guidelines, defined as the “Minimum Quality Threshold in Pre-Clinical Sepsis Studies” (MQTiPSS), to enhance translational value of these models. Methods 31 experts from 13 countries participated and were divided into 6 thematic Working Groups (WG): (1) Study Design, (2) Humane modeling, (3) Infection types, (4) Organ failure/dysfunction, (5) Fluid resuscitation and (6) Antimicrobial therapy endpoints. As basis for the MQTiPSS discussions, the participants conducted a literature review of the 260 most highly cited scientific articles on sepsis models (2002–2013). Results Overall, the participants reached consensus on 29 points; 20 at “recommendation” (R) and 9 at “consideration” (C) strength. This Executive Summary provides a synopsis of the MQTiPSS consensus (Tables 1, 2 and 3). Conclusions We believe that these recommendations and considerations will serve to bring a level of standardization to pre-clinical models of sepsis and ultimately improve translation of pre-clinical findings. These guideline points are proposed as “best practices” that should be implemented for animal sepsis models. In order to encourage its wide dissemination, this article is freely accessible in Shock, Infection and Intensive Care Medicine Experimental.
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Affiliation(s)
- Marcin F Osuchowski
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Donaueschingenstrasse 13, 1200, Vienna, Austria.
| | - Alfred Ayala
- Rhode Island Hospital and Alpert School of Medicine at Brown University, Providence, RI, USA
| | - Soheyl Bahrami
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Donaueschingenstrasse 13, 1200, Vienna, Austria
| | | | - Mihaly Boros
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | | | - Irshad H Chaudry
- University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | | | - Clifford Deutschman
- Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, USA
| | - Susanne Drechsler
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Donaueschingenstrasse 13, 1200, Vienna, Austria
| | - Philip Efron
- University of Florida College of Medicine, Gainesville, FL, USA
| | - Claes Frostell
- Division of Anaesthesia and Intensive Care, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
| | - Gerhard Fritsch
- AUVA Traumacenter, Vienna, Austria
- Paracelsus Medical University, Salzburg, Austria
| | | | - Judith Hellman
- School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma-Immunology, University Hospital of Ulm, Ulm, Germany
| | - Shigeaki Inoue
- Kobe University Graduate School of Medicine, Kobe, Japan
| | - Sylvia Knapp
- Department of Medicine 1, Medical University Vienna, Vienna, Austria
| | - Andrey V Kozlov
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Donaueschingenstrasse 13, 1200, Vienna, Austria
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium
- University Ghent, Ghent, Belgium
| | - John C Marshall
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, University of Toronto, Toronto, Canada
| | - Lyle L Moldawer
- University of Florida College of Medicine, Gainesville, FL, USA
| | - Peter Radermacher
- Institute of Anaesthesiological Pathophysiology and Process Development, University Hospital of Ulm, Ulm, Germany
| | - Heinz Redl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Donaueschingenstrasse 13, 1200, Vienna, Austria
| | | | - Mervyn Singer
- Bloomsbury Institute of Intensive Care Medicine, University College London, London, UK
| | - Christoph Thiemermann
- The William Harvey Research Institute, Barts and London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Ping Wang
- Feinstein Institute for Medical Research, Manhasset, NY, USA
| | - W Joost Wiersinga
- Division of Infectious Diseases, and Center for Experimental and Molecular Medicine, the Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Xianzhong Xiao
- Xiangya School of Medicine, Central South University, Chagnsha, Hunan, China
| | - Basilia Zingarelli
- Division of Critical Care Medicine, Cincinnati Children's Hospital Medical Center, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
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Van Looveren K, Libert C. Should we target TNF receptors in the intestinal epithelium with glucocorticoids during systemic inflammation? Expert Opin Ther Targets 2018; 22:1029-1037. [DOI: 10.1080/14728222.2018.1539078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kelly Van Looveren
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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44
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Osuchowski MF, Ayala A, Bahrami S, Bauer M, Boros M, Cavaillon JM, Chaudry IH, Coopersmith CM, Deutschman CS, Drechsler S, Efron P, Frostell C, Fritsch G, Gozdzik W, Hellman J, Huber-Lang M, Inoue S, Knapp S, Kozlov AV, Libert C, Marshall JC, Moldawer LL, Radermacher P, Redl H, Remick DG, Singer M, Thiemermann C, Wang P, Wiersinga WJ, Xiao X, Zingarelli B. Minimum Quality Threshold in Pre-Clinical Sepsis Studies (MQTiPSS): An International Expert Consensus Initiative for Improvement of Animal Modeling in Sepsis. Shock 2018; 50:377-380. [PMID: 30106875 PMCID: PMC6133201 DOI: 10.1097/shk.0000000000001212] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Revised: 06/22/2018] [Accepted: 04/19/2018] [Indexed: 12/29/2022]
Abstract
Preclinical animal studies precede the majority of clinical trials. While the clinical definitions of sepsis and recommended treatments are regularly updated, a systematic review of preclinical models of sepsis has not been done and clear modeling guidelines are lacking. To address this deficit, a Wiggers-Bernard Conference on preclinical sepsis modeling was held in Vienna in May, 2017. The goal of the conference was to identify limitations of preclinical sepsis models and to propose a set of guidelines, defined as the "Minimum Quality Threshold in Preclinical Sepsis Studies" (MQTiPSS), to enhance translational value of these models. A total of 31 experts from 13 countries participated and were divided into six thematic Working Groups: Study Design, Humane modeling, Infection types, Organ failure/dysfunction, Fluid resuscitation, and Antimicrobial therapy endpoints. As basis for the MQTiPSS discussions, the participants conducted a literature review of the 260 most highly cited scientific articles on sepsis models (2002-2013). Overall, the participants reached consensus on 29 points; 20 at "recommendation" and nine at "consideration" strength. This Executive Summary provides a synopsis of the MQTiPSS consensus. We believe that these recommendations and considerations will serve to bring a level of standardization to preclinical models of sepsis and ultimately improve translation of preclinical findings. These guideline points are proposed as "best practices" for animal models of sepsis that should be implemented. To encourage its wide dissemination, this article is freely accessible on the Intensive Care Medicine Experimental and Infection journal websites. In order to encourage its wide dissemination, this article is freely accessible in Shock, Infection, and Intensive Care Medicine Experimental.
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Affiliation(s)
- Marcin F. Osuchowski
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Vienna, Austria
| | - Alfred Ayala
- Rhode Island Hospital and Alpert School of Medicine at Brown University, Providence, Rhode Island
| | - Soheyl Bahrami
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Vienna, Austria
| | | | - Mihaly Boros
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | | | - Irshad H. Chaudry
- University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | | | | | - Susanne Drechsler
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Vienna, Austria
| | - Philip Efron
- University of Florida College of Medicine, Gainesville, Florida
| | - Claes Frostell
- Division of Anaesthesia and Intensive Care, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
| | - Gerhard Fritsch
- AUVA Trauma Center, Vienna, Austria
- Paracelsus Medical University, Salzburg, Austria
| | | | - Judith Hellman
- University of California School of Medicine, San Francisco, California
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma-Immunology, University Hospital of Ulm, Ulm, Germany
| | - Shigeaki Inoue
- Kobe University Graduate School of Medicine, Kobe, Japan
| | - Sylvia Knapp
- Medical University Vienna, Department of Medicine 1, Vienna, Austria
| | - Andrey V. Kozlov
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Vienna, Austria
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium
- University Ghent, Ghent, Belgium
| | - John C. Marshall
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, University of Toronto, Canada
| | | | - Peter Radermacher
- Institute of Anaesthesiological Pathophysiology and Process Development, University Hospital of Ulm, Ulm, Germany
| | - Heinz Redl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Vienna, Austria
| | | | - Mervyn Singer
- Bloomsbury Institute of Intensive Care Medicine, University College London, UK
| | - Christoph Thiemermann
- The William Harvey Research Institute, Barts and London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Ping Wang
- Feinstein Institute for Medical Research, Manhasset, New York
| | - W. Joost Wiersinga
- Division of Infectious Diseases, and Center for Experimental and Molecular Medicine, the Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Xianzhong Xiao
- Xiangya School of Medicine, Central South University, Chagnsha, Hunan, China
| | - Basilia Zingarelli
- Division of Critical Care Medicine, Cincinnati Children's Hospital Medical Center, College of Medicine, University of Cincinnati, Cincinnati, Ohio
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Timmermans S, Libert C. Easy Access to and Applications of the Sequences of All Protein-Coding Genes of All Sequenced Mouse Strains. Trends Genet 2018; 34:899-902. [PMID: 30243593 DOI: 10.1016/j.tig.2018.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/13/2018] [Accepted: 08/30/2018] [Indexed: 10/28/2022]
Abstract
An easily accessible and searchable overview of all protein sequences in the 36 genome-sequenced mouse strains, compared to those in the reference strain C57BL/6J, is now available, as well as an overview of the aberrant proteins in this reference strain. We provide an insight into the advantages of using these databases.
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Affiliation(s)
- Steven Timmermans
- Vlaams Instituut voor Biotechnologie (VIB) Center for Inflammation Research, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Vlaams Instituut voor Biotechnologie (VIB) Center for Inflammation Research, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
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46
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Mylka V, Deckers J, Ratman D, De Cauwer L, Thommis J, De Rycke R, Impens F, Libert C, Tavernier J, Vanden Berghe W, Gevaert K, De Bosscher K. The autophagy receptor SQSTM1/p62 mediates anti-inflammatory actions of the selective NR3C1/glucocorticoid receptor modulator compound A (CpdA) in macrophages. Autophagy 2018; 14:2049-2064. [PMID: 30215534 PMCID: PMC6984772 DOI: 10.1080/15548627.2018.1495681] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Glucocorticoids are widely used to treat inflammatory disorders; however, prolonged use of glucocorticoids results in side effects including osteoporosis, diabetes and obesity. Compound A (CpdA), identified as a selective NR3C1/glucocorticoid receptor (nuclear receptor subfamily 3, group C, member 1) modulator, exhibits an inflammation-suppressive effect, largely in the absence of detrimental side effects. To understand the mechanistic differences between the classic glucocorticoid dexamethasone (DEX) and CpdA, we looked for proteins oppositely regulated in bone marrow-derived macrophages using an unbiased proteomics approach. We found that the autophagy receptor SQSTM1 but not NR3C1 mediates the anti-inflammatory action of CpdA. CpdA drives SQSTM1 upregulation by recruiting the NFE2L2 transcription factor to its promoter. In contrast, the classic NR3C1 ligand dexamethasone recruits NR3C1 to the Sqstm1 promoter and other NFE2L2-controlled gene promoters, resulting in gene downregulation. Both DEX and CpdA induce autophagy, with marked different autophagy characteristics and morphology. Suppression of LPS-induced Il6 and Ccl2 genes by CpdA in macrophages is hampered upon Sqstm1 silencing, confirming that SQSTM1 is essential for the anti-inflammatory capacity of CpdA, at least in this cell type. Together, these results demonstrate how off-target mechanisms of selective NR3C1 ligands may contribute to a more efficient anti-inflammatory therapy.
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Affiliation(s)
- Viacheslav Mylka
- a Receptor Research Laboratories, Nuclear Receptor Lab , Ghent University , Ghent , Belgium.,c Department of Biochemistry , VIB-UGent Center for Medical Biotechnology , Ghent , Belgium.,d Department of Biochemistry , Ghent University , Ghent , Belgium
| | - Julie Deckers
- a Receptor Research Laboratories, Nuclear Receptor Lab , Ghent University , Ghent , Belgium.,c Department of Biochemistry , VIB-UGent Center for Medical Biotechnology , Ghent , Belgium.,d Department of Biochemistry , Ghent University , Ghent , Belgium.,f Inflammation Research Center , VIB, Ghent University , Ghent , Belgium
| | - Dariusz Ratman
- a Receptor Research Laboratories, Nuclear Receptor Lab , Ghent University , Ghent , Belgium.,c Department of Biochemistry , VIB-UGent Center for Medical Biotechnology , Ghent , Belgium.,d Department of Biochemistry , Ghent University , Ghent , Belgium
| | - Lode De Cauwer
- a Receptor Research Laboratories, Nuclear Receptor Lab , Ghent University , Ghent , Belgium.,c Department of Biochemistry , VIB-UGent Center for Medical Biotechnology , Ghent , Belgium.,d Department of Biochemistry , Ghent University , Ghent , Belgium
| | - Jonathan Thommis
- a Receptor Research Laboratories, Nuclear Receptor Lab , Ghent University , Ghent , Belgium.,c Department of Biochemistry , VIB-UGent Center for Medical Biotechnology , Ghent , Belgium.,d Department of Biochemistry , Ghent University , Ghent , Belgium
| | - Riet De Rycke
- f Inflammation Research Center , VIB, Ghent University , Ghent , Belgium.,g Department of Biomedical Molecular Biology , Ghent University , Ghent , Belgium.,h Department of Plant Systems Biology , VIB , Ghent , Belgium.,i Department of Plant Biotechnology and Bioinformatics , Ghent University , Ghent , Belgium
| | - Francis Impens
- c Department of Biochemistry , VIB-UGent Center for Medical Biotechnology , Ghent , Belgium.,d Department of Biochemistry , Ghent University , Ghent , Belgium.,j VIB Proteomics Core , VIB , Ghent , Belgium
| | - Claude Libert
- f Inflammation Research Center , VIB, Ghent University , Ghent , Belgium.,g Department of Biomedical Molecular Biology , Ghent University , Ghent , Belgium
| | - Jan Tavernier
- b Receptor Research Laboratories, Cytokine Receptor Lab , Ghent University , Ghent , Belgium.,c Department of Biochemistry , VIB-UGent Center for Medical Biotechnology , Ghent , Belgium.,d Department of Biochemistry , Ghent University , Ghent , Belgium
| | - Wim Vanden Berghe
- e PPES lab Protein Science, Proteomics & Epigenetic Signaling , Department Biomedical Sciences - University of Antwerp , Wilrijk , Belgium
| | - Kris Gevaert
- c Department of Biochemistry , VIB-UGent Center for Medical Biotechnology , Ghent , Belgium.,d Department of Biochemistry , Ghent University , Ghent , Belgium
| | - Karolien De Bosscher
- a Receptor Research Laboratories, Nuclear Receptor Lab , Ghent University , Ghent , Belgium.,c Department of Biochemistry , VIB-UGent Center for Medical Biotechnology , Ghent , Belgium.,d Department of Biochemistry , Ghent University , Ghent , Belgium
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47
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Souffriau J, Eggermont M, Van Ryckeghem S, Van Looveren K, Van Wyngene L, Van Hamme E, Vuylsteke M, Beyaert R, De Bosscher K, Libert C. A screening assay for Selective Dimerizing Glucocorticoid Receptor Agonists and Modulators (SEDIGRAM) that are effective against acute inflammation. Sci Rep 2018; 8:12894. [PMID: 30150712 PMCID: PMC6110732 DOI: 10.1038/s41598-018-31150-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 08/13/2018] [Indexed: 02/07/2023] Open
Abstract
It has been suggested that glucocorticoid receptor (GR) agonists that promote GR homodimerization more than standard glucocorticoids such as Dexamethasone could be more effective anti-inflammatory molecules against acute and life-threatening inflammatory conditions. To test this hypothesis, we set up a screening pipeline aimed at discovering such Selective Dimerizing GR Agonists and Modulators (SEDIGRAM). The pipeline consists of a reporter gene assay based on a palindromic glucocorticoid responsive element (GRE). This assay represents GR dimerization in human A549 lung epithelial cells. In the pipeline, this is followed by analysis of endogenous GRE-driven gene expression, a FRET assay confirming dimerization, and monitoring of in vitro and in vivo anti-inflammatory activity. In a proof of principle experiment, starting from seven candidate compounds, we identified two potentially interesting compounds (Cortivazol and AZD2906) that confer strong protection in a mouse model of aggressive TNF-induced lethal inflammation. A screening pipeline for SEDIGRAM may assist the search for compounds that promote GR dimerization and limit overwhelming acute inflammatory responses.
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Affiliation(s)
- Jolien Souffriau
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Melanie Eggermont
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sara Van Ryckeghem
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Kelly Van Looveren
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Lise Van Wyngene
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Evelien Van Hamme
- Bio Imaging Core, Center for Inflammation Research, VIB, Ghent, Belgium
| | | | - Rudi Beyaert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Karolien De Bosscher
- Receptor Research Laboratories, Nuclear Receptor Lab, Center for Medical Biotechnology Center, VIB, Ghent, Belgium.,Department of Biochemistry, Ghent University, Ghent, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium. .,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
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48
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Osuchowski MF, Ayala A, Bahrami S, Bauer M, Boros M, Cavaillon JM, Chaudry IH, Coopersmith CM, Deutschman C, Drechsler S, Efron P, Frostell C, Fritsch G, Gozdzik W, Hellman J, Huber-Lang M, Inoue S, Knapp S, Kozlov AV, Libert C, Marshall JC, Moldawer LL, Radermacher P, Redl H, Remick DG, Singer M, Thiemermann C, Wang P, Wiersinga WJ, Xiao X, Zingarelli B. Minimum quality threshold in pre-clinical sepsis studies (MQTiPSS): an international expert consensus initiative for improvement of animal modeling in sepsis. Intensive Care Med Exp 2018; 6:26. [PMID: 30112605 PMCID: PMC6093828 DOI: 10.1186/s40635-018-0189-y] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 07/18/2018] [Indexed: 12/16/2022] Open
Abstract
Background Pre-clinical animal studies precede the majority of clinical trials. While the clinical definitions of sepsis and recommended treatments are regularly updated, a systematic review of pre-clinical models of sepsis has not been done and clear modeling guidelines are lacking. Objective To address this deficit, a Wiggers-Bernard Conference on pre-clinical sepsis modeling was held in Vienna in May 2017. The goal of the conference was to identify limitations of pre-clinical sepsis models and to propose a set of guidelines, defined as the “Minimum Quality Threshold in Pre-Clinical Sepsis Studies” (MQTiPSS), to enhance translational value of these models. Methods A total of 31 experts from 13 countries participated and were divided into 6 thematic working groups (WG): (1) study design, (2) humane modeling, (3) infection types, (4) organ failure/dysfunction, (5) fluid resuscitation, and (6) antimicrobial therapy endpoints. As basis for the MQTiPSS discussions, the participants conducted a literature review of the 260 most highly cited scientific articles on sepsis models (2002–2013). Results Overall, the participants reached consensus on 29 points; 20 at “recommendation” (R) and 9 at “consideration” (C) strength. This executive summary provides a synopsis of the MQTiPSS consensus (Tables 1, 2, and 3). Detailed commentaries to all Rs and Cs are simultaneously published in three separate full-length papers. Conclusions We believe that these recommendations and considerations will serve to bring a level of standardization to pre-clinical models of sepsis and ultimately improve translation of pre-clinical findings. These guideline points are proposed as “best practices” for animal models of sepsis that should be implemented. In order to encourage its wide dissemination, this article is freely accessible in Shock, Infection and Intensive Care Medicine Experimental.
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Affiliation(s)
- Marcin F Osuchowski
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Donaueschingenstrasse 13, A-1200, Vienna, Austria.
| | - Alfred Ayala
- Rhode Island Hospital & Alpert School of Medicine at Brown University, Providence, RI, USA
| | - Soheyl Bahrami
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Donaueschingenstrasse 13, A-1200, Vienna, Austria
| | | | - Mihaly Boros
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | | | - Irshad H Chaudry
- University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | | | - Clifford Deutschman
- Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, USA
| | - Susanne Drechsler
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Donaueschingenstrasse 13, A-1200, Vienna, Austria
| | - Philip Efron
- University of Florida College of Medicine, Gainesville, FL, USA
| | - Claes Frostell
- Division of Anaesthesia and Intensive Care, Karolinska Institutet, Danderyd Hospital, Stockholm, Sweden
| | - Gerhard Fritsch
- AUVA Traumacenter, Vienna, Austria.,Paracelsus Medical University, Salzburg, Austria
| | | | - Judith Hellman
- School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma-Immunology, University Hospital of Ulm, Ulm, Germany
| | - Shigeaki Inoue
- Kobe University Graduate School of Medicine, Kobe, Japan
| | - Sylvia Knapp
- Department of Medicine 1, Medical University Vienna, Vienna, Austria
| | - Andrey V Kozlov
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Donaueschingenstrasse 13, A-1200, Vienna, Austria
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium.,University Ghent, Ghent, Belgium
| | - John C Marshall
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, University of Toronto, Toronto, Canada
| | - Lyle L Moldawer
- University of Florida College of Medicine, Gainesville, FL, USA
| | - Peter Radermacher
- Institute of Anaesthesiological Pathophysiology and Process Development, University Hospital of Ulm, Ulm, Germany
| | - Heinz Redl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center, Donaueschingenstrasse 13, A-1200, Vienna, Austria
| | | | - Mervyn Singer
- Bloomsbury Institute of Intensive Care Medicine, University College London, London, UK
| | - Christoph Thiemermann
- The William Harvey Research Institute, Barts and London School of Medicine & Dentistry, Queen Mary University of London, London, UK
| | - Ping Wang
- Feinstein Institute for Medical Research, Manhasset, NY, USA
| | - Willem Joost Wiersinga
- Division of Infectious Diseases, and Center for Experimental and Molecular Medicine, the Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Xianzhong Xiao
- Xiangya School of Medicine, Central South University, Chagnsha, Hunan, China
| | - Basilia Zingarelli
- Division of Critical Care Medicine, Cincinnati Children's Hospital Medical Center, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
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Van Wyngene L, Vandewalle J, Libert C. Reprogramming of basic metabolic pathways in microbial sepsis: therapeutic targets at last? EMBO Mol Med 2018; 10:e8712. [PMID: 29976786 PMCID: PMC6079534 DOI: 10.15252/emmm.201708712] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 04/27/2018] [Accepted: 05/25/2018] [Indexed: 12/15/2022] Open
Abstract
Sepsis is a highly lethal and urgent unmet medical need. It is the result of a complex interplay of several pathways, including inflammation, immune activation, hypoxia, and metabolic reprogramming. Specifically, the regulation and the impact of the latter have become better understood in which the highly catabolic status during sepsis and its similarity with starvation responses appear to be essential in the poor prognosis in sepsis. It seems logical that new interventions based on the recognition of new therapeutic targets in the key metabolic pathways should be developed and may have a good chance to penetrate to the bedside. In this review, we concentrate on the pathological changes in metabolism, observed during sepsis, and the presumed underlying mechanisms, with a focus on the level of the organism and the interplay between different organ systems.
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Affiliation(s)
- Lise Van Wyngene
- Center for Inflammation Research, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jolien Vandewalle
- Center for Inflammation Research, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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Imbrechts M, De Samblancx K, Fierens K, Brisse E, Vandenhaute J, Mitera T, Libert C, Smets I, Goris A, Wouters C, Matthys P. IFN-γ stimulates CpG-induced IL-10 production in B cells via p38 and JNK signalling pathways. Eur J Immunol 2018; 48:1506-1521. [DOI: 10.1002/eji.201847578] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/28/2018] [Accepted: 06/30/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Maya Imbrechts
- KU Leuven; Rega Institute; Laboratory of Immunobiology; Leuven Belgium
| | | | - Karlien Fierens
- KU Leuven; Rega Institute; Laboratory of Immunobiology; Leuven Belgium
| | - Ellen Brisse
- KU Leuven; Rega Institute; Laboratory of Immunobiology; Leuven Belgium
| | | | - Tania Mitera
- KU Leuven; Rega Institute; Laboratory of Immunobiology; Leuven Belgium
| | - Claude Libert
- VIB Center for Inflammation Research; Ghent Belgium
- Department of Biomedical Molecular Biology; Ghent University; Ghent Belgium
| | - Ide Smets
- KU Leuven; Department of Neurosciences; Laboratory for Neuroimmunology; Leuven Belgium
- Department of Neurology; University Hospitals Leuven; Leuven Belgium
| | - An Goris
- KU Leuven; Department of Neurosciences; Laboratory for Neuroimmunology; Leuven Belgium
| | - Carine Wouters
- KU Leuven; Rega Institute; Laboratory of Immunobiology; Leuven Belgium
- Laboratory of Paediatric Immunology; University Hospitals Leuven; Leuven Belgium
| | - Patrick Matthys
- KU Leuven; Rega Institute; Laboratory of Immunobiology; Leuven Belgium
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