1
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Nabirotchkin S, Bouaziz J, Glibert F, Mandel J, Foucquier J, Hajj R, Callizot N, Cholet N, Guedj M, Cohen D. Combinational Drug Repurposing from Genetic Networks Applied to Alzheimer’s Disease. J Alzheimers Dis 2022; 88:1585-1603. [DOI: 10.3233/jad-220120] [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] [Indexed: 11/15/2022]
Abstract
Background: Human diseases are multi-factorial biological phenomena resulting from perturbations of numerous functional networks. The complex nature of human diseases explains frequently observed marginal or transitory efficacy of mono-therapeutic interventions. For this reason, combination therapy is being increasingly evaluated as a biologically plausible strategy for reversing disease state, fostering the development of dedicated methodological and experimental approaches. In parallel, genome-wide association studies (GWAS) provide a prominent opportunity for disclosing human-specific therapeutic targets and rational drug repurposing. Objective: In this context, our objective was to elaborate an integrated computational platform to accelerate discovery and experimental validation of synergistic combinations of repurposed drugs for treatment of common human diseases. Methods: The proposed approach combines adapted statistical analysis of GWAS data, pathway-based functional annotation of genetic findings using gene set enrichment technique, computational reconstruction of signaling networks enriched in disease-associated genes, selection of candidate repurposed drugs and proof-of-concept combinational experimental screening. Results: It enables robust identification of signaling pathways enriched in disease susceptibility loci. Therapeutic targeting of the disease-associated signaling networks provides a reliable way for rational drug repurposing and rapid development of synergistic drug combinations for common human diseases. Conclusion: Here we demonstrate the feasibility and efficacy of the proposed approach with an experiment application to Alzheimer’s disease.
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2
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Gaume M, Hajj R, Khouri N, Johnson MB, Miladi L. One-Way Self-Expanding Rod in Neuromuscular Scoliosis: Preliminary Results of a Prospective Series of 21 Patients. JB JS Open Access 2021; 6:JBJSOA-D-21-00089. [PMID: 34934886 PMCID: PMC8683234 DOI: 10.2106/jbjs.oa.21.00089] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Fusionless techniques for the treatment of neuromuscular early-onset scoliosis (EOS) are increasingly used to preserve spinal and thoracic growth and to postpone posterior spinal fusion (PSF). These techniques have greatly improved thanks to magnetically controlled growing rods, which allow the avoidance of repeated surgery. However, the surgery-related complication rate remains high. The objective of the current study was to report the preliminary outcomes of 21 patients with neuromuscular EOS who were treated with a 1-way self-expanding rod (OWSER). This device was designed to avoid repeated surgery and preserve spinal and thoracic growth thanks to its free rod sliding.
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Affiliation(s)
- M Gaume
- Department of Orthopaedic Surgery, Necker-Enfants Malades Hospital, Assistance Publique Hôpitaux de Paris, University of Paris, Paris, France
| | - R Hajj
- Department of Orthopaedic Surgery, Necker-Enfants Malades Hospital, Assistance Publique Hôpitaux de Paris, University of Paris, Paris, France
| | - N Khouri
- Department of Orthopaedic Surgery, Necker-Enfants Malades Hospital, Assistance Publique Hôpitaux de Paris, University of Paris, Paris, France
| | - M B Johnson
- Department of Orthopaedics, The Royal Children's Hospital, Melbourne, Victoria, Australia
| | - L Miladi
- Department of Orthopaedic Surgery, Necker-Enfants Malades Hospital, Assistance Publique Hôpitaux de Paris, University of Paris, Paris, France
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3
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Bouchenaki H, Danigo A, Sturtz F, Hajj R, Magy L, Demiot C. An overview of ongoing clinical trials assessing pharmacological therapeutic strategies to manage chemotherapy-induced peripheral neuropathy, based on preclinical studies in rodent models. Fundam Clin Pharmacol 2020; 35:506-523. [PMID: 33107619 DOI: 10.1111/fcp.12617] [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: 06/19/2020] [Revised: 10/07/2020] [Accepted: 10/13/2020] [Indexed: 12/22/2022]
Abstract
Chemotherapy-induced peripheral neuropathy (CIPN) is a major dose-limiting side effect induced by a variety of chemotherapeutic agents. Symptoms are mainly sensory: pain, tingling, numbness, and temperature sensitivity. They may require the tapering of chemotherapy regimens or even their cessation; thus, the prevention/treatment of CIPN is critical to increase effectiveness of cancer treatment. However, CIPN management is mainly based on conventional neuropathic pain treatments, with poor clinical efficacy. Therefore, significant effort is made to identify new pharmacological targets to prevent/treat CIPN. Animal modeling is a key component in predicting human response to drugs and in understanding the pathophysiological mechanisms underlying CIPN. In fact, studies performed in rodents highlighted several pharmacological targets to treat/prevent CIPN. This review provides updated information about ongoing clinical trials testing drugs for the management of CIPN and presents some of their proof-of-concept studies conducted in rodent models. The presented drugs target oxidative stress, renin-angiotensin system, glutamatergic neurotransmission, sphingolipid metabolism, neuronal uptake transporters, nicotinamide adenine dinucleotide metabolism, endocannabinoid system, transient receptor potential channels, and serotoninergic receptors. As some clinical trials focus on the effect of the drugs on pain, others evaluate their efficacy by assessing general neuropathy. Moreover, based on studies conducted in rodent models, it remains unclear if some of the tested drugs act in an antinociceptive fashion or have neuroprotective properties. Thus, further investigations are needed to understand their mechanism of action, as well as a global standardization of the methods used to assess efficacy of new therapeutic strategies in the treatment of CIPN.
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Affiliation(s)
- Hichem Bouchenaki
- EA 6309 - Myelin Maintenance & Peripheral Neuropathy, Faculties of Medicine and Pharmacy, University of Limoges, Limoges, France.,Pharnext SA, Issy-les-Moulineaux, France
| | - Aurore Danigo
- EA 6309 - Myelin Maintenance & Peripheral Neuropathy, Faculties of Medicine and Pharmacy, University of Limoges, Limoges, France
| | - Franck Sturtz
- EA 6309 - Myelin Maintenance & Peripheral Neuropathy, Faculties of Medicine and Pharmacy, University of Limoges, Limoges, France
| | | | - Laurent Magy
- Department of Neurology, Reference Center for Rare Peripheral Neuropathies, University Hospital of Limoges, Limoges, France
| | - Claire Demiot
- EA 6309 - Myelin Maintenance & Peripheral Neuropathy, Faculties of Medicine and Pharmacy, University of Limoges, Limoges, France
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4
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Boussicault L, Laffaire J, Schmitt P, Rinaudo P, Callizot N, Nabirotchkin S, Hajj R, Cohen D. Combination of acamprosate and baclofen (PXT864) as a potential new therapy for amyotrophic lateral sclerosis. J Neurosci Res 2020; 98:2435-2450. [PMID: 32815196 PMCID: PMC7693228 DOI: 10.1002/jnr.24714] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 07/16/2020] [Accepted: 07/25/2020] [Indexed: 12/11/2022]
Abstract
There is currently no therapy impacting the course of amyotrophic lateral sclerosis (ALS). The only approved treatments are riluzole and edaravone, but their efficacy is modest and short‐lasting, highlighting the need for innovative therapies. We previously demonstrated the ability of PXT864, a combination of low doses of acamprosate and baclofen, to synergistically restore cellular and behavioral activity in Alzheimer's and Parkinson's disease models. The overlapping genetic, molecular, and cellular characteristics of these neurodegenerative diseases supported investigating the effectiveness of PXT864 in ALS. As neuromuscular junction (NMJ) alterations is a key feature of ALS, the effects of PXT864 in primary neuron‐muscle cocultures injured by glutamate were studied. PXT864 significantly and synergistically preserved NMJ and motoneuron integrity following glutamate excitotoxicity. PXT864 added to riluzole significantly improved such protection. PXT864 activity was then assessed in primary cultures of motoneurons derived from SOD1G93A rat embryos. These motoneurons presented severe maturation defects that were significantly improved by PXT864. In this model, glutamate application induced an accumulation of TDP‐43 protein in the cytoplasm, a hallmark that was completely prevented by PXT864. The anti‐TDP‐43 aggregation effect was also confirmed in a cell line expressing TDP‐43 fused to GFP. These results demonstrate the value of PXT864 as a promising therapeutic strategy for the treatment of ALS.
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5
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Prukop T, Wernick S, Boussicault L, Ewers D, Jäger K, Adam J, Winter L, Quintes S, Linhoff L, Barrantes-Freer A, Bartl M, Czesnik D, Zschüntzsch J, Schmidt J, Primas G, Laffaire J, Rinaudo P, Brureau A, Nabirotchkin S, Schwab MH, Nave KA, Hajj R, Cohen D, Sereda MW. Synergistic PXT3003 therapy uncouples neuromuscular function from dysmyelination in male Charcot-Marie-Tooth disease type 1A (CMT1A) rats. J Neurosci Res 2020; 98:1933-1952. [PMID: 32588471 DOI: 10.1002/jnr.24679] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 02/05/2020] [Revised: 05/13/2020] [Accepted: 05/31/2020] [Indexed: 12/11/2022]
Abstract
Charcot-Marie-Tooth disease 1 A (CMT1A) is caused by an intrachromosomal duplication of the gene encoding for PMP22 leading to peripheral nerve dysmyelination, axonal loss, and progressive muscle weakness. No therapy is available. PXT3003 is a low-dose combination of baclofen, naltrexone, and sorbitol which has been shown to improve disease symptoms in Pmp22 transgenic rats, a bona fide model of CMT1A disease. However, the superiority of PXT3003 over its single components or dual combinations have not been tested. Here, we show that in a dorsal root ganglion (DRG) co-culture system derived from transgenic rats, PXT3003 induced myelination when compared to its single and dual components. Applying a clinically relevant ("translational") study design in adult male CMT1A rats for 3 months, PXT3003, but not its dual components, resulted in improved performance in behavioral motor and sensory endpoints when compared to placebo. Unexpectedly, we observed only a marginally increased number of myelinated axons in nerves from PXT3003-treated CMT1A rats. However, in electrophysiology, motor latencies correlated with increased grip strength indicating a possible effect of PXT3003 on neuromuscular junctions (NMJs) and muscle fiber pathology. Indeed, PXT3003-treated CMT1A rats displayed an increased perimeter of individual NMJs and a larger number of functional NMJs. Moreover, muscles of PXT3003 CMT1A rats displayed less neurogenic atrophy and a shift toward fast contracting muscle fibers. We suggest that ameliorated motor function in PXT3003-treated CMT1A rats result from restored NMJ function and muscle innervation, independent from myelination.
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Affiliation(s)
- Thomas Prukop
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, Göttingen, Germany.,Institute of Clinical Pharmacology, University Medical Center Göttingen, Göttingen, Germany
| | - Stephanie Wernick
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, Göttingen, Germany.,Department of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen, Germany
| | | | - David Ewers
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, Göttingen, Germany.,Department of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen, Germany
| | - Karoline Jäger
- Department of Neurology, University Medical Center Göttingen, Göttingen, Germany
| | - Julia Adam
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Lorenz Winter
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Susanne Quintes
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, Göttingen, Germany.,Department of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen, Germany
| | - Lisa Linhoff
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, Göttingen, Germany.,Department of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen, Germany
| | | | - Michael Bartl
- Department of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen, Germany
| | - Dirk Czesnik
- Department of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen, Germany
| | - Jana Zschüntzsch
- Department of Neurology, University Medical Center Göttingen, Göttingen, Germany
| | - Jens Schmidt
- Department of Neurology, University Medical Center Göttingen, Göttingen, Germany
| | | | | | | | | | | | - Markus H Schwab
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Klaus-Armin Nave
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | | | | | - Michael W Sereda
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, Göttingen, Germany.,Department of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen, Germany
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6
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Nabirotchkin S, Peluffo AE, Rinaudo P, Yu J, Hajj R, Cohen D. Next-generation drug repurposing using human genetics and network biology. Curr Opin Pharmacol 2020; 51:78-92. [PMID: 31982325 DOI: 10.1016/j.coph.2019.12.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/16/2019] [Accepted: 12/19/2019] [Indexed: 12/26/2022]
Abstract
Drug repurposing has attracted increased attention, especially in the context of drug discovery rates that remain too low despite a recent wave of approvals for biological therapeutics (e.g. gene therapy). These new biological entities-based treatments have high costs that are difficult to justify for small markets that include rare diseases. Drug repurposing, involving the identification of single or combinations of existing drugs based on human genetics data and network biology approaches represents a next-generation approach that has the potential to increase the speed of drug discovery at a lower cost. This Pharmacological Perspective reviews progress and perspectives in combining human genetics, especially genome-wide association studies, with network biology to drive drug repurposing for rare and common diseases with monogenic or polygenic etiologies. Also, highlighted here are important features of this next generation approach to drug repurposing, which can be combined with machine learning methods to meet the challenges of personalized medicine.
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Affiliation(s)
- Serguei Nabirotchkin
- Network Biology & Drug Discovery Department, Pharnext, 11 rue René Jacques, 92130 Issy-les-Moulineaux, France
| | - Alex E Peluffo
- Data Science Department, Pharnext, 11 rue René Jacques, 92130 Issy-les-Moulineaux, France.
| | - Philippe Rinaudo
- Data Science Department, Pharnext, 11 rue René Jacques, 92130 Issy-les-Moulineaux, France
| | - Jinchao Yu
- Data Science Department, Pharnext, 11 rue René Jacques, 92130 Issy-les-Moulineaux, France
| | - Rodolphe Hajj
- Preclinical Research and Pharmacology Department, Pharnext, 11 rue René Jacques, 92130 Issy-les-Moulineaux, France
| | - Daniel Cohen
- Chief Executive Officer, Pharnext, 11 rue René Jacques, 92130 Issy-les-Moulineaux, France
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7
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Bouchenaki H, Bégou M, Magy L, Hajj R, Demiot C. Les traitements pharmacologiques des douleurs neuropathiques. Therapie 2019; 74:633-643. [DOI: 10.1016/j.therap.2019.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/15/2019] [Accepted: 04/04/2019] [Indexed: 02/08/2023]
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8
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Prukop T, Stenzel J, Wernick S, Kungl T, Mroczek M, Adam J, Ewers D, Nabirotchkin S, Nave KA, Hajj R, Cohen D, Sereda MW. Early short-term PXT3003 combinational therapy delays disease onset in a transgenic rat model of Charcot-Marie-Tooth disease 1A (CMT1A). PLoS One 2019; 14:e0209752. [PMID: 30650121 PMCID: PMC6334894 DOI: 10.1371/journal.pone.0209752] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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: 06/15/2018] [Accepted: 12/11/2018] [Indexed: 12/13/2022] Open
Abstract
The most common type of Charcot-Marie-Tooth disease is caused by a duplication of PMP22 leading to dysmyelination, axonal loss and progressive muscle weakness (CMT1A). Currently, no approved therapy is available for CMT1A patients. A novel polytherapeutic proof-of-principle approach using PXT3003, a low-dose combination of baclofen, naltrexone and sorbitol, slowed disease progression after long-term dosing in adult Pmp22 transgenic rats, a known animal model of CMT1A. Here, we report an early postnatal, short-term treatment with PXT3003 in CMT1A rats that delays disease onset into adulthood. CMT1A rats were treated from postnatal day 6 to 18 with PXT3003. Behavioural, electrophysiological, histological and molecular analyses were performed until 12 weeks of age. Daily oral treatment for approximately 2 weeks ameliorated motor deficits of CMT1A rats reaching wildtype levels. Histologically, PXT3003 corrected the disturbed axon calibre distribution with a shift towards large motor axons. Despite dramatic clinical amelioration, only distal motor latencies were improved and correlated with phenotype performance. On the molecular level, PXT3003 reduced Pmp22 mRNA overexpression and improved the misbalanced downstream PI3K-AKT / MEK-ERK signalling pathway. The improved differentiation status of Schwann cells may have enabled better long-term axonal support function. We conclude that short-term treatment with PXT3003 during early development may partially prevent the clinical and molecular manifestations of CMT1A. Since PXT3003 has a strong safety profile and is currently undergoing a phase III trial in CMT1A patients, our results suggest that PXT3003 therapy may be a bona fide translatable therapy option for children and young adolescent patients suffering from CMT1A.
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Affiliation(s)
- Thomas Prukop
- Max-Planck-Institute of Experimental Medicine, Department of Neurogenetics, Göttingen, Germany
- University Medical Center Göttingen, Institute of Clinical Pharmacology, Göttingen, Germany
| | - Jan Stenzel
- Max-Planck-Institute of Experimental Medicine, Department of Neurogenetics, Göttingen, Germany
| | - Stephanie Wernick
- Max-Planck-Institute of Experimental Medicine, Department of Neurogenetics, Göttingen, Germany
| | - Theresa Kungl
- Max-Planck-Institute of Experimental Medicine, Department of Neurogenetics, Göttingen, Germany
| | - Magdalena Mroczek
- Max-Planck-Institute of Experimental Medicine, Department of Neurogenetics, Göttingen, Germany
| | - Julia Adam
- Max-Planck-Institute of Experimental Medicine, Department of Neurogenetics, Göttingen, Germany
| | - David Ewers
- Max-Planck-Institute of Experimental Medicine, Department of Neurogenetics, Göttingen, Germany
| | | | - Klaus-Armin Nave
- Max-Planck-Institute of Experimental Medicine, Department of Neurogenetics, Göttingen, Germany
| | | | | | - Michael W. Sereda
- Max-Planck-Institute of Experimental Medicine, Department of Neurogenetics, Göttingen, Germany
- University Medical Center Göttingen, Department of Clinical Neurophysiology, Göttingen, Germany
- * E-mail:
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9
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Brureau A, Cholet N, Hajj R, Cohen D. P3‐042: PXT864 COMBINATION RESTORES COGNITIVE DEFICITS OF ALZHEIMER'S MICE, EVEN IN ANIMALS WITH ADVANCED DISEASE THAT LOST RESPONSIVENESS TO DONEPEZIL. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.1397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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10
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Orgogozo JM, Touchon J, Ousset PJ, Pasquier F, Guériot C, Philippe R, Auriacombe S, Hugon J, Schmidt P, Bertrand V, Hajj R, Nabirotchkin S, Guedj M, Goedkoop R, Cohen D. P1‐061: DOUBLE‐BLIND ARGUMENT FOR A SYNERGISTIC THERAPEUTIC EFFECT OF A FIXED LOW‐DOSE COMBINATION OF ACAMPROSATE AND BACLOFEN IN ALZHEIMER'S DISEASE. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Jacques Touchon
- Inserm U1061, Université de Montpellier, JT ConseilsMontpellierFrance
| | - Pierre Jean Ousset
- Gerontopole, INSERM U 1027, Alzheimer's' Disease Research and Clinical CenterToulouse University HospitalToulouseFrance
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11
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Cholet N, Foucquier J, Murphy N, Guedj M, Nabirotchkin S, Hajj R, Cohen D. [P3–047]: A COMBINATION OF ACAMPROSATE AND BACLOFEN (PXT864) SYNERGIZES WITH STANDARDS OF CARE FOR THE TREATMENT OF ALZHEIMER's DISEASE. Alzheimers Dement 2017. [DOI: 10.1016/j.jalz.2017.06.1860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Attarian S, Vallat JM, Magy L, Funalot B, Gonnaud PM, Lacour A, Péréon Y, Dubourg O, Pouget J, Micallef J, Franques J, Lefebvre MN, Ghorab K, Al-Moussawi M, Tiffreau V, Preudhomme M, Magot A, Leclair-Visonneau L, Stojkovic T, Bossi L, Lehert P, Gilbert W, Bertrand V, Mandel J, Milet A, Hajj R, Boudiaf L, Scart-Grès C, Nabirotchkin S, Guedj M, Chumakov I, Cohen D. Erratum to: An exploratory randomised double-blind and placebo-controlled phase 2 study of a combination of baclofen, naltrexone and sorbitol (PXT3003) in patients with Charcot-Marie-Tooth disease type 1A. Orphanet J Rare Dis 2016; 11:92. [PMID: 27387831 PMCID: PMC4937550 DOI: 10.1186/s13023-016-0463-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 05/16/2016] [Indexed: 11/10/2022] Open
Affiliation(s)
- Shahram Attarian
- Centre de référence des maladies neuromusculaires et de la SLA, Pôle des neurosciences Cliniques, AP-HM et Aix Marseille Université, Marseille, France
| | - Jean-Michel Vallat
- CHU de Limoges - Hôpital Dupuytren, 2 Avenue Martin Luther King, 87042, Limoges, France
| | - Laurent Magy
- CHU de Limoges - Hôpital Dupuytren, 2 Avenue Martin Luther King, 87042, Limoges, France
| | - Benoît Funalot
- CHU de Limoges - Hôpital Dupuytren, 2 Avenue Martin Luther King, 87042, Limoges, France
| | | | - Arnaud Lacour
- CHRU de Lille - Hôpital Roger Salengro, rue Emile Laine, 59037, Lille, France
| | - Yann Péréon
- CHU de Nantes - Hôtel Dieu, 1 place Alexis Ricordeau, 44093, Nantes, France
| | - Odile Dubourg
- CHU de Paris - Groupe Hospitalier Pitié-Salpétrière, 47-83 boulevard de l'Hôpital, 75013, Paris, France
| | - Jean Pouget
- Centre de référence des maladies neuromusculaires et de la SLA, Pôle des neurosciences Cliniques, AP-HM et Aix Marseille Université, Marseille, France
| | - Joëlle Micallef
- CIC-Centre de Pharmacologie Clinique et D'Evaluations Therapeutiques, AP-HM et Aix Marseille Université, Marseille, France
| | - Jérôme Franques
- Centre de référence des maladies neuromusculaires et de la SLA, Pôle des neurosciences Cliniques, AP-HM et Aix Marseille Université, Marseille, France
| | - Marie-Noëlle Lefebvre
- CIC-Centre de Pharmacologie Clinique et D'Evaluations Therapeutiques, AP-HM et Aix Marseille Université, Marseille, France
| | - Karima Ghorab
- CHU de Limoges - Hôpital Dupuytren, 2 Avenue Martin Luther King, 87042, Limoges, France
| | | | - Vincent Tiffreau
- CHRU de Lille - Hôpital Roger Salengro, rue Emile Laine, 59037, Lille, France
| | | | - Armelle Magot
- CHU de Nantes - Hôtel Dieu, 1 place Alexis Ricordeau, 44093, Nantes, France
| | | | - Tanya Stojkovic
- CHU de Paris - Groupe Hospitalier Pitié-Salpétrière, 47-83 boulevard de l'Hôpital, 75013, Paris, France
| | | | - Philippe Lehert
- Faculty of Medicine, The University of Melbourne, Grattan St, Melbourne, VIC, 3010, Australia.,Faculty of Economics, UCL Mons, Louvain, Belgium
| | - Walter Gilbert
- Carl M. Loeb University Professor Emeritus, Harvard University, Cambridge, MA, 02138, USA
| | - Viviane Bertrand
- Pharnext, 11, rue des Peupliers, 92130 Issy-Les-Moulineaux, Paris, France
| | - Jonas Mandel
- Pharnext, 11, rue des Peupliers, 92130 Issy-Les-Moulineaux, Paris, France
| | - Aude Milet
- Pharnext, 11, rue des Peupliers, 92130 Issy-Les-Moulineaux, Paris, France
| | - Rodolphe Hajj
- Pharnext, 11, rue des Peupliers, 92130 Issy-Les-Moulineaux, Paris, France
| | - Lamia Boudiaf
- Pharnext, 11, rue des Peupliers, 92130 Issy-Les-Moulineaux, Paris, France
| | | | | | - Mickael Guedj
- Pharnext, 11, rue des Peupliers, 92130 Issy-Les-Moulineaux, Paris, France
| | - Ilya Chumakov
- Pharnext, 11, rue des Peupliers, 92130 Issy-Les-Moulineaux, Paris, France
| | - Daniel Cohen
- Pharnext, 11, rue des Peupliers, 92130 Issy-Les-Moulineaux, Paris, France.
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Toulorge D, Schapira AHV, Hajj R. Molecular changes in the postmortem parkinsonian brain. J Neurochem 2016; 139 Suppl 1:27-58. [PMID: 27381749 DOI: 10.1111/jnc.13696] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [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: 04/16/2016] [Revised: 05/14/2016] [Accepted: 05/27/2016] [Indexed: 12/16/2022]
Abstract
Parkinson disease (PD) is the second most common neurodegenerative disease after Alzheimer disease. Although PD has a relatively narrow clinical phenotype, it has become clear that its etiological basis is broad. Post-mortem brain analysis, despite its limitations, has provided invaluable insights into relevant pathogenic pathways including mitochondrial dysfunction, oxidative stress and protein homeostasis dysregulation. Identification of the genetic causes of PD followed the discovery of these abnormalities, and reinforced the importance of the biochemical defects identified post-mortem. Recent genetic studies have highlighted the mitochondrial and lysosomal areas of cell function as particularly significant in mediating the neurodegeneration of PD. Thus the careful analysis of post-mortem PD brain biochemistry remains a crucial component of research, and one that offers considerable opportunity to pursue etiological factors either by 'reverse biochemistry' i.e. from defective pathway to mutant gene, or by the complex interplay between pathways e.g. mitochondrial turnover by lysosomes. In this review we have documented the spectrum of biochemical defects identified in PD post-mortem brain and explored their relevance to metabolic pathways involved in neurodegeneration. We have highlighted the complex interactions between these pathways and the gene mutations causing or increasing risk for PD. These pathways are becoming a focus for the development of disease modifying therapies for PD. Parkinson's is accompanied by multiple changes in the brain that are responsible for the progression of the disease. We describe here the molecular alterations occurring in postmortem brains and classify them as: Neurotransmitters and neurotrophic factors; Lewy bodies and Parkinson's-linked genes; Transition metals, calcium and calcium-binding proteins; Inflammation; Mitochondrial abnormalities and oxidative stress; Abnormal protein removal and degradation; Apoptosis and transduction pathways. This article is part of a special issue on Parkinson disease.
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Affiliation(s)
| | | | - Rodolphe Hajj
- Department of Discovery, Pharnext, Issy-Les-Moulineaux, France.
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Hajj R, Milet A, Toulorge D, Cholet N, Laffaire J, Foucquier J, Robelet S, Mitry R, Guedj M, Nabirotchkin S, Chumakov I, Cohen D. Combination of acamprosate and baclofen as a promising therapeutic approach for Parkinson's disease. Sci Rep 2015; 5:16084. [PMID: 26542636 PMCID: PMC4635348 DOI: 10.1038/srep16084] [Citation(s) in RCA: 21] [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: 02/25/2015] [Accepted: 10/05/2015] [Indexed: 01/11/2023] Open
Abstract
Parkinson’s disease (PD) is a progressive neurodegenerative disorder characterised by the loss of dopaminergic nigrostriatal neurons but which involves the loss of additional neurotransmitter pathways. Mono- or polytherapeutic interventions in PD patients have declining efficacy long-term and no influence on disease progression. The systematic analysis of available genetic and functional data as well as the substantial overlap between Alzheimer’s disease (AD) and PD features led us to repurpose and explore the effectiveness of a combination therapy (ABC) with two drugs – acamprosate and baclofen – that was already effective in AD animal models, for the treatment of PD. We showed in vitro that ABC strongly and synergistically protected neuronal cells from oxidative stress in the oxygen and glucose deprivation model, as well as dopaminergic neurons from cell death in the 6-hydroxydopamine (6-OHDA) rat model. Furthermore, we showed that ABC normalised altered motor symptoms in vivo in 6-OHDA-treated rats, acting by protecting dopaminergic cell bodies and their striatal terminals. Interestingly, ABC also restored a normal behaviour pattern in lesioned rats suggesting a symptomatic effect, and did not negatively interact with L-dopa. Our results demonstrate the potential value of combining repurposed drugs as a promising new strategy to treat this debilitating disease.
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Affiliation(s)
- Rodolphe Hajj
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Aude Milet
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Damien Toulorge
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Nathalie Cholet
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Julien Laffaire
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Julie Foucquier
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Sandra Robelet
- Syncrosome, 163 avenue de Luminy, 13288 Marseille, France
| | - Richard Mitry
- Syncrosome, 163 avenue de Luminy, 13288 Marseille, France
| | - Mickael Guedj
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | | | - Ilya Chumakov
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Daniel Cohen
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
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Chumakov I, Nabirotchkin S, Cholet N, Milet A, Boucard A, Toulorge D, Pereira Y, Graudens E, Traoré S, Foucquier J, Guedj M, Vial E, Callizot N, Steinschneider R, Maurice T, Bertrand V, Scart-Grès C, Hajj R, Cohen D. Combining two repurposed drugs as a promising approach for Alzheimer's disease therapy. Sci Rep 2015; 5:7608. [PMID: 25566747 PMCID: PMC5378993 DOI: 10.1038/srep07608] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [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: 10/20/2014] [Accepted: 11/19/2014] [Indexed: 02/08/2023] Open
Abstract
Alzheimer disease (AD) represents a major medical problem where mono-therapeutic interventions demonstrated only a limited efficacy so far. We explored the possibility of developing a combinational therapy that might prevent the degradation of neuronal and endothelial structures in this disease. We argued that the distorted balance between excitatory (glutamate) and inhibitory (GABA/glycine) systems constitutes a therapeutic target for such intervention. We found that a combination of two approved drugs – acamprosate and baclofen – synergistically protected neurons and endothelial structures in vitro against amyloid-beta (Aβ) oligomers. The neuroprotective effects of these drugs were mediated by modulation of targets in GABA/glycinergic and glutamatergic pathways. In vivo, the combination alleviated cognitive deficits in the acute Aβ25–35 peptide injection model and in the mouse mutant APP transgenic model. Several patterns altered in AD were also synergistically normalised. Our results open up the possibility for a promising therapeutic approach for AD by combining repurposed drugs.
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Affiliation(s)
- Ilya Chumakov
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | | | - Nathalie Cholet
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Aude Milet
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Aurélie Boucard
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Damien Toulorge
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Yannick Pereira
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Esther Graudens
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Sory Traoré
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Julie Foucquier
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Mickael Guedj
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Emmanuel Vial
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | | | | | - Tangui Maurice
- 1] Université de Montpellier 2, 34095 Montpellier, France; Inserm, U710, 34095 Montpellier, France; EPHE, 75017 Paris, France [2] Amylgen, 2196 bd de la Lironde, 34980 Montferrier-sur-Lez, France
| | - Viviane Bertrand
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | | | - Rodolphe Hajj
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
| | - Daniel Cohen
- Pharnext, 11 rue des Peupliers, 92130 Issy-Les-Moulineaux, France
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Attarian S, Vallat JM, Magy L, Funalot B, Gonnaud PM, Lacour A, Péréon Y, Dubourg O, Pouget J, Micallef J, Franques J, Lefebvre MN, Ghorab K, Al-Moussawi M, Tiffreau V, Preudhomme M, Magot A, Leclair-Visonneau L, Stojkovic T, Bossi L, Lehert P, Gilbert W, Bertrand V, Mandel J, Milet A, Hajj R, Boudiaf L, Scart-Grès C, Nabirotchkin S, Guedj M, Chumakov I, Cohen D. An exploratory randomised double-blind and placebo-controlled phase 2 study of a combination of baclofen, naltrexone and sorbitol (PXT3003) in patients with Charcot-Marie-Tooth disease type 1A. Orphanet J Rare Dis 2014; 9:199. [PMID: 25519680 PMCID: PMC4311411 DOI: 10.1186/s13023-014-0199-0] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 11/20/2014] [Indexed: 11/29/2022] Open
Abstract
Background Charcot-Marie-Tooth type 1A disease (CMT1A) is a rare orphan inherited neuropathy caused by an autosomal dominant duplication of a gene encoding for the structural myelin protein PMP22, which induces abnormal Schwann cell differentiation and dysmyelination, eventually leading to axonal suffering then loss and muscle wasting. We favour the idea that diseases can be more efficiently treated when targeting multiple disease-relevant pathways. In CMT1A patients, we therefore tested the potential of PXT3003, a low-dose combination of three already approved compounds (baclofen, naltrexone and sorbitol). Our study conceptually builds on preclinical experiments highlighting a pleiotropic mechanism of action that includes downregulation of PMP22. The primary objective was to assess safety and tolerability of PXT3003. The secondary objective aimed at an exploratory analysis of efficacy of PXT3003 in CMT1A, to be used for designing next clinical development stages (Phase 2b/3). Methods 80 adult patients with mild-to-moderate CMT1A received in double-blind for 1 year Placebo or one of the three increasing doses of PXT3003 tested, in four equal groups. Safety and tolerability were assessed with the incidence of related adverse events. Efficacy was assessed using the Charcot-Marie-Tooth Neuropathy Score (CMTNS) and the Overall Neuropathy Limitations Scale (ONLS) as main endpoints, as well as various clinical and electrophysiological outcomes. Results This trial confirmed the safety and tolerability of PXT3003. The highest dose (HD) showed consistent evidence of improvement beyond stabilization. CMTNS and ONLS, with a significant improvement of respectively of 8% (0.4% - 16.2%) and 12.1% (2% - 23.2%) in the HD group versus the pool of all other groups, appear to be the most sensitive clinical endpoints to treatment despite their quasi-stability over one year under Placebo. Patients who did not deteriorate over one year were significantly more frequent in the HD group. Conclusions These results confirm that PXT3003 deserves further investigation in adults and could greatly benefit CMT1A-diagnosed children, usually less affected than adults. Trial registration EudraCT Number: 2010-023097-40. ClinicalTrials.gov Identifier: NCT01401257. The Committee for Orphan Medicinal Products issued in February 2014 a positive opinion on the application for orphan designation for PXT3003 (EMA/OD/193/13). Electronic supplementary material The online version of this article (doi:10.1186/s13023-014-0199-0) contains supplementary material, which is available to authorized users.
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Chumakov I, Milet A, Cholet N, Primas G, Boucard A, Pereira Y, Graudens E, Mandel J, Laffaire J, Foucquier J, Glibert F, Bertrand V, Nave KA, Sereda MW, Vial E, Guedj M, Hajj R, Nabirotchkin S, Cohen D. Polytherapy with a combination of three repurposed drugs (PXT3003) down-regulates Pmp22 over-expression and improves myelination, axonal and functional parameters in models of CMT1A neuropathy. Orphanet J Rare Dis 2014; 9:201. [PMID: 25491744 PMCID: PMC4279797 DOI: 10.1186/s13023-014-0201-x] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 11/24/2014] [Indexed: 11/24/2022] Open
Abstract
Charcot-Marie-Tooth disease type 1A (CMT1A) is the most common inherited sensory and motor peripheral neuropathy. It is caused by PMP22 overexpression which leads to defects of peripheral myelination, loss of long axons, and progressive impairment then disability. There is no treatment available despite observations that monotherapeutic interventions slow progression in rodent models. We thus hypothesized that a polytherapeutic approach using several drugs, previously approved for other diseases, could be beneficial by simultaneously targeting PMP22 and pathways important for myelination and axonal integrity. A combination of drugs for CMT1A polytherapy was chosen from a group of authorised drugs for unrelated diseases using a systems biology approach, followed by pharmacological safety considerations. Testing and proof of synergism of these drugs were performed in a co-culture model of DRG neurons and Schwann cells derived from a Pmp22 transgenic rat model of CMT1A. Their ability to lower Pmp22 mRNA in Schwann cells relative to house-keeping genes or to a second myelin transcript (Mpz) was assessed in a clonal cell line expressing these genes. Finally in vivo efficacy of the combination was tested in two models: CMT1A transgenic rats, and mice that recover from a nerve crush injury, a model to assess neuroprotection and regeneration. Combination of (RS)-baclofen, naltrexone hydrochloride and D-sorbitol, termed PXT3003, improved myelination in the Pmp22 transgenic co-culture cellular model, and moderately down-regulated Pmp22 mRNA expression in Schwannoma cells. In both in vitro systems, the combination of drugs was revealed to possess synergistic effects, which provided the rationale for in vivo clinical testing of rodent models. In Pmp22 transgenic CMT1A rats, PXT3003 down-regulated the Pmp22 to Mpz mRNA ratio, improved myelination of small fibres, increased nerve conduction and ameliorated the clinical phenotype. PXT3003 also improved axonal regeneration and remyelination in the murine nerve crush model. Based on these observations in preclinical models, a clinical trial of PTX3003 in CMT1A, a neglected orphan disease, is warranted. If the efficacy of PTX3003 is confirmed, rational polytherapy based on novel combinations of existing non-toxic drugs with pleiotropic effects may represent a promising approach for rapid drug development.
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Hajj R, Lesimple P, Nawrocki-Raby B, Birembaut P, Puchelle E, Coraux C. Human airway surface epithelial regeneration is delayed and abnormal in cystic fibrosis. J Pathol 2007; 211:340-50. [PMID: 17186573 DOI: 10.1002/path.2118] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [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: 12/11/2022]
Abstract
Cystic fibrosis (CF) at an advanced stage of the disease is characterized by airway epithelial injury and remodelling. Whether CF remodelling is related to infection and inflammation or due to an abnormal regenerative process is still undecided. We have recently established the expression and secretion profiles of interleukin (IL)-8, matrix metalloproteinase (MMP)-7, MMP-9, and tissue inhibitor of metalloproteinase (TIMP)-1 during non-CF airway epithelial regeneration in a humanized nude mouse xenograft model. To enhance our understanding of CF remodelling, we compared the regeneration process of non-infected human CF and non-CF nasal epithelia. In both CF and non-CF situations, epithelial regeneration was characterized by successive steps of cell adhesion and migration, proliferation, pseudostratification, and terminal differentiation. However, histological examination of the grafts showed a delay in differentiation of the CF airway epithelium. Cell proliferation was higher in the regenerating CF epithelium, and the differentiated CF epithelium exhibited a pronounced height increase and basal cell hyperplasia in comparison with non-CF epithelium. In addition, while the number of goblet cells expressing MUC5AC was similar in CF and non-CF regenerated epithelia, the number of MUC5B-immunopositive goblet cells was lower in CF grafts. The expression of human IL-8, MMP-7, MMP-9, and TIMP-1 was enhanced in CF epithelium, especially early in the regenerative process. Together, our data strongly suggest that the regeneration of human CF airway surface epithelium is characterized by remodelling, delayed differentiation, and altered pro-inflammatory and MMP responses.
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Affiliation(s)
- R Hajj
- INSERM U514, Reims, France; Université de Reims, IFR53, Reims, France
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Hajj R, Baranek T, Le Naour R, Lesimple P, Puchelle E, Coraux C. 080 Les cellules basales sont des progéniteurs de l’épithélium respiratoire de surface humain adulte. Rev Mal Respir 2006. [DOI: 10.1016/s0761-8425(06)71908-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lesimple P, Van Seuningen I, Buisine M, Copin M, Hinz M, Hoffmann W, Hajj R, Brody S, Coraux C, Puchelle E. 082 Le peptide trifolié TFF3 favorise la différenciation ciliée de l’épithélium respiratoire de surface humain. Rev Mal Respir 2006. [DOI: 10.1016/s0761-8425(06)71910-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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LeSimple P, van Seuningen I, Buisine MP, Copin MC, Hinz M, Hoffmann W, Hajj R, Brody SL, Coraux C, Puchelle E. Trefoil factor family 3 peptide promotes human airway epithelial ciliated cell differentiation. Am J Respir Cell Mol Biol 2006; 36:296-303. [PMID: 17008636 DOI: 10.1165/rcmb.2006-0270oc] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Human airway surface epithelium is frequently damaged by inhaled factors (viruses, bacteria, xenobiotic substances) as well as by inflammatory mediators that contribute to the shedding of surface epithelial cells. To regain its protective function, the epithelium must rapidly repair and redifferentiate. The Trefoil Factor Family (TFF) peptides are secretory products of many mucous cells. TFF3, the major TFF in the airways, is able to enhance airway epithelial cell migration, but the role of this protein in differentiation has not been defined. To identify the specific role of TFF3 in the differentiation of the human airway surface epithelium, we analyzed the temporal expression pattern of TFF3, MUC5AC, and MUC5B mucins (goblet cells) and ciliated cell markers beta-tubulin (cilia) and FOXJ1 (ciliogenesis) during human airway epithelial regeneration using in vivo humanized airway xenograft and in vitro air-liquid interface (ALI) culture models. We observed that TFF3, MUC5AC, MUC5B, and ciliated cell markers were expressed in well-differentiated airway epithelium. The addition of exogenous recombinant human TFF3 to epithelial cell cultures before the initiation of differentiation resulted in no change in MUC5AC or cytokeratin 13 (CK13, basal cell marker)-positive cells, but induced an increase in the number of FOXJ1-positive cells and in the number of beta-tubulin-positive ciliated cells (P < 0.05). Furthermore, this effect on ciliated cell differentiation could be reversed by specific epidermal growth factor (EGF) receptor (EGF-R) inhibition. These results indicate that TFF3 is able to induce ciliogenesis and to promote airway epithelial ciliated cell differentiation, in part through an EGF-R-dependent pathway.
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Affiliation(s)
- Pierre LeSimple
- INSERM U514, Université Reims Champagne Ardenne, and CHU Reims, Hôpital Maison Blanche, Reims, France
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Hajj R, Baranek T, Le Naour R, Lesimple P, Puchelle E, Coraux C. Basal cells of the human adult airway surface epithelium retain transit-amplifying cell properties. Stem Cells 2006; 25:139-48. [PMID: 17008423 DOI: 10.1634/stemcells.2006-0288] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In numerous airway diseases, such as cystic fibrosis, the epithelium is severely damaged and must regenerate to restore its defense functions. Although the human airway epithelial stem cells have not been identified yet, we have suggested recently that epithelial stem/progenitor cells exist among both human fetal basal and suprabasal cell subsets in the tracheal epithelium. In this study, we analyzed the capacity of human adult basal cells isolated from human adult airway tissues to restore a well-differentiated and functional airway epithelium. To this end, we used the human-specific basal cell markers tetraspanin CD151 and tissue factor (TF) to separate positive basal cells from negative columnar cells with a FACSAria cell sorter. Sorted epithelial cells were seeded into epithelium-denuded rat tracheae that were grafted subcutaneously in nude mice and on collagen-coated porous membranes, where they were grown at the air-liquid interface. Sorted basal and columnar populations were also analyzed for their telomerase activity, a specific transit-amplifying cell marker, by the telomeric repeat amplification protocol assay. After cell sorting, the pure and viable CD151/TF-positive basal cell population proliferated on plastic and adhered on epithelium-denuded rat tracheae, as well as on collagen-coated porous membranes, where it was able to restore a fully differentiated mucociliary and functional airway epithelium, whereas viable columnar negative cells did not. Telomerase activity was detected in the CD151/TF-positive basal cell population, but not in CD151/TF-negative columnar cells. These results demonstrate that human adult basal cells are at least airway surface transit-amplifying epithelial cells.
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Affiliation(s)
- Rodolphe Hajj
- Institut National de Santé et de Recherche Médicale Unité 514, Centre Hospitalier Universitaire Maison Blanche, Reims, France
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Abstract
Despite an efficient defence system, the airway surface epithelium, in permanent contact with the external milieu, is frequently injured by inhaled pollutants, microorganisms and viruses. The response of the airway surface epithelium to an acute injury includes a succession of cellular events varying from the loss of the surface epithelium integrity to partial shedding of the epithelium or even to complete denudation of the basement membrane. The epithelium has then to repair and regenerate to restore its functions, through several mechanisms including basal cell spreading and migration, followed by proliferation and differentiation of epithelial cells. The cellular and molecular factors involved in wound repair and epithelial regeneration are closely interacting and imply extracellular matrix proteins, matrix metalloproteinases (MMPs) and their inhibitors as well as cytokines and growth factors secreted by airway epithelial and mesenchymal cells. The development of in vitro and in vivo models of airway epithelium wound repair allowed the study of the spatio-temporal modulation of these factors during the different steps of epithelial repair and regeneration. In this context, several studies have demonstrated that the matrix and secretory environment are markedly involved in these mechanisms and that their dysregulation may induce remodelling of the airway mucosa. A better knowledge of the mechanisms involved in airway epithelium regeneration may pave the way to regenerative therapeutics allowing the reconstitution of a functional airway epithelium in numerous respiratory diseases such as asthma, chronic obstructive pulmonary diseases, cystic fibrosis and bronchiolitis.
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Affiliation(s)
- Christelle Coraux
- Inserm UMRS 514, IFR 53, CHU Maison Blanche, 45, rue Cognacq- Jay, 51092 Reims Cedex, France
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Abstract
The airway surface epithelium is frequently injured by microorganisms and viruses due to its permanent contact with the external medium. Following injury, the epithelium is able to repair itself and regenerate through several mechanisms including spreading and migration of basal cells, cell proliferation and differentiation. The cellular and molecular factors involved in wound repair and epithelial regeneration interact closely, implying the participation of cytoskeleton proteins and integrins receptors, matrix metalloproteinases and their inhibitors as well as cytokines and growth factors secreted by airway epithelial and mesenchymal cells. The spatio-temporal modulation of the pro-inflammatory cytokines such as IL-8, and MMPs (MMP-9 and -7) during the different steps of regeneration suggests that the matrix and secretory environment are markedly involved in these mechanisms and that their dysregulation may induce remodeling of the airway mucosa. A better knowledge of the mechanisms involved in airway epithelium regeneration may pave the way to regenerative therapeutics allowing the reconstitution of a functional airway mucosa in numerous respiratory diseases such as cystic fibrosis, chronic obstructive pulmonary diseases and bronchiolitis.
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Affiliation(s)
- E Puchelle
- Inserm UMRS 514, IFR 53, Hôpital Maison Blanche, 45, rue Cognacq Jay, F 51092 Reims Cedex
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Hajj R, LeSimple P, Baranek T, Lenaour R, Puchelle E, Coraux C. 41 Human adult airway epithelial basal cells are stem/progenitor cells of airway surface epithelium. J Cyst Fibros 2006. [DOI: 10.1016/s1569-1993(06)80038-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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LeSimple P, Buisine MP, van Seuningen I, Coping MC, Hinz M, Hoffmann W, Hajj R, Coraux C, Puchelle E. 40 The trefoil factor TFF3 promotes human airway epithelial differentiation. J Cyst Fibros 2006. [DOI: 10.1016/s1569-1993(06)80037-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Hajj R, Lesimple P, Laplace V, Puchelle E, Coraux C. 008 La régénération de l’épithélium de surface respiratoire est anormale dans la mucoviscidose. Rev Mal Respir 2005. [DOI: 10.1016/s0761-8425(05)92420-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Coraux C, Martinella-Catusse C, Nawrocki-Raby B, Hajj R, Burlet H, Escotte S, Laplace V, Birembaut P, Puchelle E. Differential expression of matrix metalloproteinases and interleukin-8 during regeneration of human airway epithelium in vivo. J Pathol 2005; 206:160-9. [PMID: 15806599 DOI: 10.1002/path.1757] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In many airway diseases, the airway epithelium is severely damaged and has to regenerate rapidly to restore its function. The regeneration process involves chronological steps of epithelial cell migration, proliferation, stratification, and differentiation. The present study has used an in vivo humanized airway xenograft model in nude mice that mimics the regeneration dynamics of human airway epithelium after severe injury, and human-specific molecular tools, to study the expression profiles of epithelial matrix metalloproteinases (MMPs)-7 and -9, of tissue inhibitor of matrix metalloproteinase-1 (TIMP-1), and of the pro-inflammatory cytokine interleukin-8 (IL-8) during the different steps of human airway epithelium regeneration. It was found that during the cell migration and proliferation steps, airway epithelial cells expressed IL-8 at a high level, whereas airway epithelial pseudo-stratification and surface airway epithelial differentiation were associated with increased expression of MMPs and a progressive decrease in IL-8. Interestingly, immunohistochemical analysis revealed exclusive expression of MMPs at the apical part of the well-differentiated regenerated airway epithelium, and incubation of the regenerating epithelial cells with MMP inhibitors led to abnormal epithelial differentiation. These data provide new insight into the temporal expression of MMPs and IL-8 during the regeneration of airway epithelium and demonstrate the involvement of these factors during the different steps that lead to restoration of a well-differentiated and functional airway epithelium.
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Affiliation(s)
- Christelle Coraux
- Institut National de la Santé et de la Recherche Médicale (INSERM), Unité Mixte de Recherche Santé (UMR S) 514, Reims, France
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