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Michel A, Kokten T, Saber-Cherif L, Umoret R, Alberto JM, Helle D, Julien A, Daval JL, Guéant JL, Bossenmeyer-Pourié C, Pourié G. Folate and Cobalamin Deficiencies during Pregnancy Disrupt the Glucocorticoid Response in Hypothalamus through N-Homocysteinilation of the Glucocorticoid Receptor. Int J Mol Sci 2023; 24:9847. [PMID: 37372992 DOI: 10.3390/ijms24129847] [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: 04/13/2023] [Revised: 05/22/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
Vitamin B9 (folate)/B12 (cobalamin) deficiency is known to induce brain structural and/or functional retardations. In many countries, folate supplementation, targeting the most severe outcomes such as neural tube defects, is discontinued after the first trimester. However, adverse effects may occur after birth because of some mild misregulations. Various hormonal receptors were shown to be deregulated in brain tissue under these conditions. The glucocorticoid receptor (GR) is particularly sensitive to epigenetic regulation and post-translational modifications. In a mother-offspring rat model of vitamin B9/B12 deficiency, we investigated whether a prolonged folate supplementation could restore the GR signaling in the hypothalamus. Our data showed that a deficiency of folate and vitamin B12 during the in-utero and early postnatal periods was associated with reduced GR expression in the hypothalamus. We also described for the first time a novel post-translational modification of GR that impaired ligand binding and GR activation, leading to decrease expression of one of the GR targets in the hypothalamus, AgRP. Moreover, this brain-impaired GR signaling pathway was associated with behavioral perturbations during offspring growth. Importantly, perinatal and postnatal supplementation with folic acid helped restore GR mRNA levels and activity in hypothalamus cells and improved behavioral deficits.
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Affiliation(s)
- Arnaud Michel
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Tunay Kokten
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Lynda Saber-Cherif
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Rémy Umoret
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Jean-Marc Alberto
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Déborah Helle
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Amélia Julien
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Jean-Luc Daval
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Jean-Louis Guéant
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
- National Center of Inborn Errors of Metabolism, University Regional Hospital of Nancy, F-54000 Nancy, France
| | - Carine Bossenmeyer-Pourié
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Grégory Pourié
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
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Hassan Z, Coelho D, Bossenmeyer-Pourié C, Matmat K, Arnold C, Savladori A, Alberto JM, Umoret R, Guéant JL, Pourié G. Cognitive Impairment Is Associated with AMPAR Glutamatergic Dysfunction in a Mouse Model of Neuronal Methionine Synthase Deficiency. Cells 2023; 12:cells12091267. [PMID: 37174668 PMCID: PMC10177068 DOI: 10.3390/cells12091267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/19/2023] [Accepted: 03/23/2023] [Indexed: 05/15/2023] Open
Abstract
Impairment of one-carbon metabolism during pregnancy, either due to nutritional deficiencies in B9 or B12 vitamins or caused by specific genetic defects, is often associated with neurological defects, including cognitive dysfunction that persists even after vitamin supplementation. Animal nutritional models do not allow for conclusions regarding the specific brain mechanisms that may be modulated by systemic compensations. Using the Cre-lox system associated to the neuronal promoter Thy1.2, a knock-out model for the methionine synthase specifically in the brain was generated. Our results on the neurobehavioral development of offspring show that the absence of methionine synthase did not lead to growth retardation, despite an effective reduction of both its expression and the methylation status in brain tissues. Behaviors were differently affected according to their functional outcome. Only temporary retardations were recorded in the acquisition of vegetative functions during the suckling period, compared to a dramatic reduction in cognitive performance after weaning. Investigation of the glutamatergic synapses in cognitive areas showed a reduction of AMPA receptors phosphorylation and clustering, indicating an epigenomic effect of the neuronal deficiency of methionine synthase on the reduction of glutamatergic synapses excitability. Altogether, our data indicate that cognitive impairment associated with methionine synthase deficiency may not only result from neurodevelopmental abnormalities, but may also be the consequence of alterations in functional plasticity of the brain.
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Affiliation(s)
- Ziad Hassan
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - David Coelho
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
- National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, F-54000 Nancy, France
| | - Carine Bossenmeyer-Pourié
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Karim Matmat
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Carole Arnold
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Aurélie Savladori
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Jean-Marc Alberto
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Rémy Umoret
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
| | - Jean-Louis Guéant
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
- National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, F-54000 Nancy, France
| | - Grégory Pourié
- Inserm UMRS 1256 NGERE-Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, F-54000 Nancy, France
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Hocquel A, Ravel JM, Lambert L, Bonnet C, Banneau G, Kol B, Tissier L, Hopes L, Meyer M, Dillier C, Michaud M, Lardin A, Kaminsky AL, Schmitt E, Liao L, Zhu F, Myriam B, Bossenmeyer-Pourié C, Verger A, Renaud M. Reduced penetrance of an eastern French mutation in ATL1 autosomal-dominant inheritance (SPG3A): extended phenotypic spectrum coupled with brain 18F-FDG PET. Neurogenetics 2022; 23:241-255. [DOI: 10.1007/s10048-022-00695-4] [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] [Received: 04/10/2022] [Accepted: 06/19/2022] [Indexed: 10/17/2022]
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Puisieux S, Bossenmeyer-Pourié C, Hopes L, Frismand-Kryloff S, Guéant JL, Renaud M. Troubles du métabolisme des monocarbones dans la maladie de Huntington. Rev Neurol (Paris) 2021. [DOI: 10.1016/j.neurol.2021.02.199] [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: 11/28/2022]
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Ravel JM, Benkirane M, Calmels N, Marelli C, Ory-Magne F, Ewenczyk C, Halleb Y, Tison F, Lecocq C, Pische G, Casenave P, Chaussenot A, Frismand S, Tyvaert L, Larrieu L, Pointaux M, Drouot N, Bossenmeyer-Pourié C, Oussalah A, Guéant JL, Leheup B, Bonnet C, Anheim M, Tranchant C, Lambert L, Chelly J, Koenig M, Renaud M. Expanding the clinical spectrum of STIP1 homology and U-box containing protein 1-associated ataxia. J Neurol 2021; 268:1927-1937. [PMID: 33417001 DOI: 10.1007/s00415-020-10348-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 10/30/2020] [Revised: 11/23/2020] [Accepted: 12/04/2020] [Indexed: 01/18/2023]
Abstract
BACKGROUND STUB1 has been first associated with autosomal recessive (SCAR16, MIM# 615768) and later with dominant forms of ataxia (SCA48, MIM# 618093). Pathogenic variations in STUB1 are now considered a frequent cause of cerebellar ataxia. OBJECTIVE We aimed to improve the clinical, radiological, and molecular delineation of SCAR16 and SCA48. METHODS Retrospective collection of patients with SCAR16 or SCA48 diagnosed in three French genetic centers (Montpellier, Strasbourg and Nancy). RESULTS Here, we report four SCAR16 and nine SCA48 patients from two SCAR16 and five SCA48 unrelated French families. All presented with slowly progressive cerebellar ataxia. Additional findings included cognitive decline, dystonia, parkinsonism and swallowing difficulties. The age at onset was highly variable, ranging from 14 to 76 years. Brain MRI showed marked cerebellar atrophy in all patients. Phenotypic findings associated with STUB1 pathogenic variations cover a broad spectrum, ranging from isolated slowly progressive ataxia to severe encephalopathy, and include extrapyramidal features. We described five new pathogenic variations, two previously reported pathogenic variations, and two rare variants of unknown significance in association with STUB1-related disorders. We also report the first pathogenic variation associated with both dominant and recessive forms of inheritance (SCAR16 and SCA48). CONCLUSION Even though differences are observed between the recessive and dominant forms, it appears that a continuum exists between these two entities. While adding new symptoms associated with STUB1 pathogenic variations, we insist on the difficulty of genetic counselling in STUB1-related pathologies. Finally, we underscore the usefulness of DAT-scan as an additional clue for diagnosis.
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Affiliation(s)
- Jean-Marie Ravel
- Service de Génétique Médicale, Hôpitaux de Brabois, CHRU de Nancy, Rue du Morvan, 54500, Vandoeuvre-lès-Nancy, France
- University of Lorraine, INSERM UMR_S 1256, Nutrition, Genetics, and Environmental Risk Exposure (NGERE), Faculty of Medicine of Nancy, 54000, Nancy, France
| | - Mehdi Benkirane
- Laboratoire de Génétique Moléculaire, CHU Montpellier, EA7402, Montpellier, France
- EA7402 Institut Universitaire de Recherche Clinique, Université de Montpellier, 641 Avenue du Doyen Gaston Giraud, 34093, Montpellier cedex 5, France
| | - Nadège Calmels
- Laboratoires de Diagnostic Génétique, Institut de Génétique Médicale D'Alsace (IGMA), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Cecilia Marelli
- Expert Centre for Neurogenetic Diseases and Adult Mitochondrial and Metabolic Diseases, University Montpellier, CHU, Montpellier, France
- MMDN, University Montpellier, EPHE, INSERM, Montpellier, France
| | | | - Claire Ewenczyk
- Sorbonne Université, Institut du Cerveau et de la Moelle Épinière (ICM), AP-HP, INSERM, CNRS, University Hospital Pitié-Salpêtrière, Paris, France
- Service de génétique clinique, Hôpital Pitié-Salpêtrière, APHP, Paris, France
| | - Yosra Halleb
- Laboratoire de Génétique Moléculaire, CHU Montpellier, EA7402, Montpellier, France
- EA7402 Institut Universitaire de Recherche Clinique, Université de Montpellier, 641 Avenue du Doyen Gaston Giraud, 34093, Montpellier cedex 5, France
| | - François Tison
- Institut des Maladies Neurodégénératives, Univ. Bordeaux, CNRS, Bordeaux, France
- Centre Mémoire de Ressources et de Recherches, CHU de Bordeaux, Pôle de Neurosciences Cliniques, Bordeaux, France
| | - Claire Lecocq
- Service de Neurologie, Centre Hospitalier de Haguenau, Haguenau, France
| | - Guillaume Pische
- Service de Neurologie, Centre Hospitalier de Haguenau, Haguenau, France
| | | | - Annabelle Chaussenot
- Service de Génétique Médicale, Centre de Référence des Maladies Mitochondriales, Hôpital de l'Archet 2, Nice, France
| | | | | | - Lise Larrieu
- Laboratoire de Génétique Moléculaire, CHU Montpellier, EA7402, Montpellier, France
- EA7402 Institut Universitaire de Recherche Clinique, Université de Montpellier, 641 Avenue du Doyen Gaston Giraud, 34093, Montpellier cedex 5, France
| | - Morgane Pointaux
- Laboratoire de Génétique Moléculaire, CHU Montpellier, EA7402, Montpellier, France
- EA7402 Institut Universitaire de Recherche Clinique, Université de Montpellier, 641 Avenue du Doyen Gaston Giraud, 34093, Montpellier cedex 5, France
| | - Nathalie Drouot
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM-U964/CNRS-UMR7104/Université de Strasbourg, Illkirch, France
| | - Carine Bossenmeyer-Pourié
- University of Lorraine, INSERM UMR_S 1256, Nutrition, Genetics, and Environmental Risk Exposure (NGERE), Faculty of Medicine of Nancy, 54000, Nancy, France
| | - Abderrahim Oussalah
- University of Lorraine, INSERM UMR_S 1256, Nutrition, Genetics, and Environmental Risk Exposure (NGERE), Faculty of Medicine of Nancy, 54000, Nancy, France
- Department of Molecular Medicine, Division of Biochemistry, Molecular Biology, Nutrition, and Metabolism, University Hospital of Nancy, 54000, Nancy, France
| | - Jean-Louis Guéant
- University of Lorraine, INSERM UMR_S 1256, Nutrition, Genetics, and Environmental Risk Exposure (NGERE), Faculty of Medicine of Nancy, 54000, Nancy, France
- Department of Molecular Medicine, Division of Biochemistry, Molecular Biology, Nutrition, and Metabolism, University Hospital of Nancy, 54000, Nancy, France
| | - Bruno Leheup
- Service de Génétique Médicale, Hôpitaux de Brabois, CHRU de Nancy, Rue du Morvan, 54500, Vandoeuvre-lès-Nancy, France
- University of Lorraine, INSERM UMR_S 1256, Nutrition, Genetics, and Environmental Risk Exposure (NGERE), Faculty of Medicine of Nancy, 54000, Nancy, France
| | - Céline Bonnet
- University of Lorraine, INSERM UMR_S 1256, Nutrition, Genetics, and Environmental Risk Exposure (NGERE), Faculty of Medicine of Nancy, 54000, Nancy, France
- Laboratoire de génétique médicale, CHRU Nancy, Nancy, France
| | - Mathieu Anheim
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM-U964/CNRS-UMR7104/Université de Strasbourg, Illkirch, France
- Service de Neurologie, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, 1 avenue Molière, 67098, Cedex, Strasbourg, France
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Christine Tranchant
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM-U964/CNRS-UMR7104/Université de Strasbourg, Illkirch, France
- Service de Neurologie, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, 1 avenue Molière, 67098, Cedex, Strasbourg, France
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Laëtitia Lambert
- Service de Génétique Médicale, Hôpitaux de Brabois, CHRU de Nancy, Rue du Morvan, 54500, Vandoeuvre-lès-Nancy, France
- University of Lorraine, INSERM UMR_S 1256, Nutrition, Genetics, and Environmental Risk Exposure (NGERE), Faculty of Medicine of Nancy, 54000, Nancy, France
| | - Jamel Chelly
- Laboratoires de Diagnostic Génétique, Institut de Génétique Médicale D'Alsace (IGMA), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM-U964/CNRS-UMR7104/Université de Strasbourg, Illkirch, France
| | - Michel Koenig
- Laboratoire de Génétique Moléculaire, CHU Montpellier, EA7402, Montpellier, France.
- EA7402 Institut Universitaire de Recherche Clinique, Université de Montpellier, 641 Avenue du Doyen Gaston Giraud, 34093, Montpellier cedex 5, France.
| | - Mathilde Renaud
- Service de Génétique Médicale, Hôpitaux de Brabois, CHRU de Nancy, Rue du Morvan, 54500, Vandoeuvre-lès-Nancy, France.
- University of Lorraine, INSERM UMR_S 1256, Nutrition, Genetics, and Environmental Risk Exposure (NGERE), Faculty of Medicine of Nancy, 54000, Nancy, France.
- Service de Neurologie, CHRU Nancy, Nancy, France.
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Pourié G, Martin N, Bossenmeyer-Pourié C, Akchiche N, Guéant-Rodriguez RM, Geoffroy A, Jeannesson E, El Hajj Chehadeh S, Mimoun K, Brachet P, Koziel V, Alberto JM, Helle D, Debard R, Leininger B, Daval JL, Guéant JL. Folate- and vitamin B12-deficient diet during gestation and lactation alters cerebellar synapsin expression via impaired influence of estrogen nuclear receptor α. FASEB J 2015; 29:3713-25. [PMID: 26018677 DOI: 10.1096/fj.14-264267] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [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: 10/23/2014] [Accepted: 05/11/2015] [Indexed: 02/06/2023]
Abstract
Deficiency in the methyl donors vitamin B12 and folate during pregnancy and postnatal life impairs proper brain development. We studied the consequences of this combined deficiency on cerebellum plasticity in offspring from rat mothers subjected to deficient diet during gestation and lactation and in rat neuroprogenitor cells expressing cerebellum markers. The major proteomic change in cerebellum of 21-d-old deprived females was a 2.2-fold lower expression of synapsins, which was confirmed in neuroprogenitors cultivated in the deficient condition. A pathway analysis suggested that these proteomic changes were related to estrogen receptor α (ER-α)/Src tyrosine kinase. The influence of impaired ER-α pathway was confirmed by abnormal negative geotaxis test at d 19-20 and decreased phsophorylation of synapsins in deprived females treated by ER-α antagonist 1,3-bis(4-hydroxyphenyl)-4-methyl-5-[4-(2-piperidinylethoxy)phenol]-1H-pyrazole dihydrochloride (MPP). This effect was consistent with 2-fold decreased expression and methylation of ER-α and subsequent decreased ER-α/PPAR-γ coactivator 1 α (PGC-1α) interaction in deficiency condition. The impaired ER-α pathway led to decreased expression of synapsins through 2-fold decreased EGR-1/Zif-268 transcription factor and to 1.7-fold reduced Src-dependent phosphorylation of synapsins. The treatment of neuroprogenitors with either MPP or PP1 (4-(4'-phenoxyanilino)-6,7-dimethoxyquinazoline, 6,7-dimethoxy-N-(4-phenoxyphenyl)-4-quinazolinamine, SKI-1, Src-l1) Src inhibitor produced similar effects. In conclusion, the deficiency during pregnancy and lactation impairs the expression of synapsins through a deregulation of ER-α pathway.
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Affiliation(s)
- Grégory Pourié
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Nicolas Martin
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Carine Bossenmeyer-Pourié
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Nassila Akchiche
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Rosa Maria Guéant-Rodriguez
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Andréa Geoffroy
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Elise Jeannesson
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Sarah El Hajj Chehadeh
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Khalid Mimoun
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Patrick Brachet
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Violette Koziel
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Jean-Marc Alberto
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Deborah Helle
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Renée Debard
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Brigitte Leininger
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Jean-Luc Daval
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
| | - Jean-Louis Guéant
- *Institut National de la Santé et de la Recherche Médicale, Unité 954, Nutrition-Genetics and Environmental Exposure, Medical Faculty and University Hospital Center, Nancy University, Vandoeuvre lès Nancy, France; Human Nutrition Unit, Unité Mixte de Recherche 1019 Institut National de la Recherche Agronomique/University of Auvergne, Institut National de la Recherche Agronomique Centre of Theix, Saint-Genès Champanelle, France; and Istituto di Ricovero e Cura a Carattere Scientifico, Oasi Maria Santissima-Institute for Research on Mental Retardation and Brain Aging, Troina, Italy
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Martin N, Bossenmeyer-Pourié C, Koziel V, Jazi R, Audonnet S, Vert P, Guéant JL, Daval JL, Pourié G. Non-injurious neonatal hypoxia confers resistance to brain senescence in aged male rats. PLoS One 2012; 7:e48828. [PMID: 23173039 PMCID: PMC3500249 DOI: 10.1371/journal.pone.0048828] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [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: 04/17/2012] [Accepted: 10/05/2012] [Indexed: 11/19/2022] Open
Abstract
Whereas brief acute or intermittent episodes of hypoxia have been shown to exert a protective role in the central nervous system and to stimulate neurogenesis, other studies suggest that early hypoxia may constitute a risk factor that influences the future development of mental disorders. We therefore investigated the effects of a neonatal “conditioning-like” hypoxia (100% N2, 5 min) on the brain and the cognitive outcomes of rats until 720 days of age (physiologic senescence). We confirmed that such a short hypoxia led to brain neurogenesis within the ensuing weeks, along with reduced apoptosis in the hippocampus involving activation of Erk1/2 and repression of p38 and death-associated protein (DAP) kinase. At 21 days of age, increased thicknesses and cell densities were recorded in various subregions, with strong synapsin activation. During aging, previous exposure to neonatal hypoxia was associated with enhanced memory retrieval scores specifically in males, better preservation of their brain integrity than controls, reduced age-related apoptosis, larger hippocampal cell layers, and higher expression of glutamatergic and GABAergic markers. These changes were accompanied with a marked expression of synapsin proteins, mainly of their phosphorylated active forms which constitute major players of synapse function and plasticity, and with increases of their key regulators, i.e. Erk1/2, the transcription factor EGR-1/Zif-268 and Src kinase. Moreover, the significantly higher interactions between PSD-95 scaffolding protein and NMDA receptors measured in the hippocampus of 720-day-old male animals strengthen the conclusion of increased synaptic functional activity and plasticity associated with neonatal hypoxia. Thus, early non-injurious hypoxia may trigger beneficial long term effects conferring higher resistance to senescence in aged male rats, with a better preservation of cognitive functions.
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Affiliation(s)
- Nicolas Martin
- Inserm U954, Vandoeuvre-lès-Nancy, France
- Université de Lorraine, Faculté de Médecine, Vandoeuvre-lès-Nancy, France
| | - Carine Bossenmeyer-Pourié
- Inserm U954, Vandoeuvre-lès-Nancy, France
- Université de Lorraine, Faculté de Médecine, Vandoeuvre-lès-Nancy, France
| | - Violette Koziel
- Inserm U954, Vandoeuvre-lès-Nancy, France
- Université de Lorraine, Faculté de Médecine, Vandoeuvre-lès-Nancy, France
| | - Rozat Jazi
- Inserm U954, Vandoeuvre-lès-Nancy, France
- Université de Lorraine, Faculté de Médecine, Vandoeuvre-lès-Nancy, France
| | - Sandra Audonnet
- Inserm U954, Vandoeuvre-lès-Nancy, France
- Université de Lorraine, Faculté de Médecine, Vandoeuvre-lès-Nancy, France
| | - Paul Vert
- Service de Médecine Néonatale, Maternité Régionale Universitaire, Nancy, France
| | - Jean-Louis Guéant
- Inserm U954, Vandoeuvre-lès-Nancy, France
- Université de Lorraine, Faculté de Médecine, Vandoeuvre-lès-Nancy, France
- IRCCS, Oasi Maria S.S., Institute for Research on Mental Retardation and Brain Aging, Troina (EN), Italy
| | - Jean-Luc Daval
- Inserm U954, Vandoeuvre-lès-Nancy, France
- Université de Lorraine, Faculté de Médecine, Vandoeuvre-lès-Nancy, France
| | - Grégory Pourié
- Inserm U954, Vandoeuvre-lès-Nancy, France
- Université de Lorraine, Faculté de Médecine, Vandoeuvre-lès-Nancy, France
- * E-mail:
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8
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Akchiche N, Bossenmeyer-Pourié C, Kerek R, Martin N, Pourié G, Koziel V, Helle D, Alberto JM, Ortiou S, Camadro JM, Léger T, Guéant JL, Daval JL. Homocysteinylation of neuronal proteins contributes to folate deficiency-associated alterations of differentiation, vesicular transport, and plasticity in hippocampal neuronal cells. FASEB J 2012; 26:3980-92. [PMID: 22713523 DOI: 10.1096/fj.12-205757] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Despite the key role in neuronal development of a deficit in the methyl donor folate, little is known on the underlying mechanisms. We therefore studied the consequences of folate deficiency on proliferation, differentiation, and plasticity of the rat H19-7 hippocampal cell line. Folate deficit reduced proliferation (17%) and sensitized cells to differentiation-associated apoptosis (+16%). Decreased production (-58%) of S-adenosylmethionine (the universal substrate for transmethylation reactions) and increased expression of histone deacetylases (HDAC4,6,7) would lead to epigenomic changes that may impair the differentiation process. Cell polarity, vesicular transport, and synaptic plasticity were dramatically affected, with poor neurite outgrowth (-57%). Cell treatment by an HDAC inhibitor (SAHA) led to a noticeable improvement of cell polarity and morphology, with longer processes. Increased homocysteine levels (+55%) consecutive to folate shortage produced homocysteinylation, evidenced by coimmunoprecipitations and mass spectrometry, and aggregation of motor proteins dynein and kinesin, along with functional alterations, as reflected by reduced interactions with partner proteins. Prominent homocysteinylation of key neuronal proteins and subsequent aggregation certainly constitute major adverse effects of folate deficiency, affecting normal development with possible long-lasting consequences.
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Affiliation(s)
- Nassila Akchiche
- Inserm U954, Faculté de Médecine, 9 Avenue de la Forêt de Haye, F-54500 Vandoeuvre-lès-Nancy, France
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9
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Akchiche N, Bossenmeyer-Pourié C, Pourié G, Koziel V, Nédélec E, Guéant JL, Daval JL. Differentiation and neural integration of hippocampal neuronal progenitors: signaling pathways sequentially involved. Hippocampus 2010; 20:949-61. [PMID: 19714568 DOI: 10.1002/hipo.20690] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In the context of their potential implication in regenerative strategies, we characterized cell mechanisms underlying the fate of embryonic rat hippocampal H19-7 progenitors in culture upon induction of their differentiation, and tested their capacities to integrate into a neuronal network in vitro. Without addition of growth factors, nearly 100% of cells expressed various neuronal markers, with a progressive rise of the expression of Synapsin I and II, suggesting that cells developed as mature neurons with synaptogenic capacities. Fully differentiated neurons were identified as glutamatergic and expressed the receptor-associated protein PSD-95. Quantification of ATP showed that 60% of cells died within 24 h after differentiation. Cell death was shown to imply Erk1/2-dependent intrinsic mitochondrial apoptosis signaling pathway, with activation of caspase-9 and -3, finally leading to single-strand DNA. Surviving neurons displayed high levels of Akt, phospho-Akt, and antiapoptotic proteins such as Bcl-2 and Bcl-XL, with decreased caspase activation. In the absence of trophic support, the proapoptotic death-associated protein (DAP) kinase was dramatically stimulated by 24 h postdifferentiation, along with increased levels of p38 and phospho-p38, and caspase reactivation. These findings show that different signaling pathways are sequentially triggered by differentiation, and highlight that ultimate cell death would involve p38 and DAP kinase activation. This was supported by the improvement of cell survival at 24-h postdifferentiation when cells were treated by PD169316, a specific inhibitor of p38. Finally, when seeded on rat hippocampal primary cultured neurons, a significant number of differentiated H19-7 cells were able to survive and to develop cell-cell communication.
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Martin N, Pourié G, Bossenmeyer-Pourié C, Jazi R, Guéant JL, Vert P, Daval JL. Conditioning-like brief neonatal hypoxia improves cognitive function and brain tissue properties with marked gender dimorphism in adult rats. Semin Perinatol 2010; 34:193-200. [PMID: 20494735 DOI: 10.1053/j.semperi.2010.02.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Although recent studies have documented compensatory generation of neurons in adult brains in response to various insults, a noninjurious short episode of hypoxia in rat neonates has been shown to trigger neurogenesis within the ensuing weeks, without apparent brain lesions. Very little is known of the long-term consequences. We therefore investigated the effects of such a conditioning-like hypoxia (100% N(2), 5 min) on the brain and the cognitive outcomes of rats at 40 to 100 days of age. Control and posthypoxic rats developed similar learning capacities over postnatal days 14 to 18, but hypoxia was associated with enhanced scores in a test used to evaluate memory retrieval between 40 and 100 days. A striking sexual dimorphism was observed, with an earlier functional gain observed in female (40 days) compared with male (100 days) rats; gains were associated with matching structural changes in areas involved in cognition, including the hippocampus and frontal cortex. Therefore, it is proposed that brief neonatal hypoxia may exert long-term beneficial effects through neurogenesis stimulation.
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Affiliation(s)
- Nicolas Martin
- INSERM U954, Nancy-Université, Faculté de Médecine, Nancy, France
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11
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Bossenmeyer-Pourié C, Blaise S, Pourié G, Tomasetto C, Audonnet S, Ortiou S, Koziel V, Rio MC, Daval JL, Guéant JL, Beck B. Methyl donor deficiency affects fetal programming of gastric ghrelin cell organization and function in the rat. Am J Pathol 2009; 176:270-7. [PMID: 19948829 DOI: 10.2353/ajpath.2010.090153] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Methyl donor deficiency (MDD) during pregnancy influences intrauterine development. Ghrelin is expressed in the stomach of fetuses and influences fetal growth, but MDD influence on gastric ghrelin is unknown. We examined the gastric ghrelin system in MDD-induced intrauterine growth retardation. By using specific markers and approaches (such as periodic acid-Schiff, bromodeoxyuridine, homocysteine, terminal deoxynucleotidyl transferase biotin-dUTP nick end labeling, immunostaining, reverse transcription-polymerase chain reaction), we studied the gastric oxyntic mucosa cellular organization and ghrelin gene expression in the mucosa in 20-day-old fetuses and weanling pups, and plasma ghrelin concentration in weanling rat pups of dams either normally fed or deprived of choline, folate, vitamin B6, and vitamin B12 during gestation and suckling periods. MDD fetuses weighed less than controls; the weight deficit reached 57% at weaning (P < 0.001). Both at the end of gestation and at weaning, they presented with an aberrant gastric oxyntic mucosa formation with loss of cell polarity, anarchic cell migration, abnormal progenitor differentiation, apoptosis, and signs of surface layer erosion. Ghrelin cells were abnormally located in the pit region of oxyntic glands. At weaning, plasma ghrelin levels were decreased (-28%; P < 0.001) despite unchanged mRNA expression in the stomach. This decrease was associated with lower body weight. Taken together, these data indicate that one mechanism through which MDD influences fetal programming is the remodeling of gastric cellular organization, leading to dysfunction of the ghrelin system and dramatic effects on growth.
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Affiliation(s)
- Carine Bossenmeyer-Pourié
- INSERM U954, Nutrition, Génétique et Expositions aux Risques Environnementaux, 54505 Vandoeuvre Cedex, France
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12
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Blaise SA, Nédélec E, Alberto JM, Schroeder H, Audonnet S, Bossenmeyer-Pourié C, Guéant JL, Daval JL. Short hypoxia could attenuate the adverse effects of hyperhomocysteinemia on the developing rat brain by inducing neurogenesis. Exp Neurol 2009; 216:231-8. [DOI: 10.1016/j.expneurol.2008.11.020] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2008] [Revised: 11/25/2008] [Accepted: 11/29/2008] [Indexed: 11/30/2022]
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13
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Blaise SA, Nédélec E, Schroeder H, Alberto JM, Bossenmeyer-Pourié C, Guéant JL, Daval JL. Gestational vitamin B deficiency leads to homocysteine-associated brain apoptosis and alters neurobehavioral development in rats. Am J Pathol 2007; 170:667-79. [PMID: 17255334 PMCID: PMC1851855 DOI: 10.2353/ajpath.2007.060339] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Hyperhomocysteinemia has been identified as a risk factor for neurological disorders. To study the influence of early deficiency in nutritional determinants of hyperhomocysteinemia on the developing rat brain, dams were fed a standard diet or a diet lacking methyl groups during gestation and lactation. Homocysteinemia progressively increased in the offspring of the deficient group and at 21 days reached 13.3+/-3.7 micromol/L versus 6.8+/-0.3 micromol/L in controls. Homocysteine accumulated in both neurons and astrocytes of selective brain structures including the hippocampus, the cerebellum, the striatum, and the neurogenic subventricular zone. Most homocysteine-positive cells expressed p53 and displayed fragmented DNA indicative of apoptosis. Righting reflex and negative geotaxis revealed a delay in the onset of integration capacities in the deficient group. Between 19 and 21 days, a poorer success score was recorded in deficient animals in a locomotor coordination test. A switch to normal food after weaning allowed restoration of normal homocysteinemia. Nevertheless, at 80 days of age, the exploratory behavior in the elevated-plus maze and the learning and memory behavior in the eight-arm maze revealed that early vitamin B deprivation is associated with persistent functional disabilities, possibly resulting from the ensuing neurotoxic effects of homocysteine.
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Affiliation(s)
- Sébastien A Blaise
- INSERM U.724, Faculté de Médecine, 9 Avenue de la Forêt de Haye, B.P. 184, 54500 Vandoeuvre-lès-Nancy, France
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14
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Boxio R, Bossenmeyer-Pourié C, Vanderesse R, Dournon C, Nüsse O. The immunostimulatory peptide WKYMVm-NH activates bone marrow mouse neutrophils via multiple signal transduction pathways. Scand J Immunol 2005; 62:140-7. [PMID: 16101820 DOI: 10.1111/j.1365-3083.2005.01651.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 11/26/2022]
Abstract
G-protein-coupled receptors play a major role in the activation of the innate immune system, such as polymorphonuclear neutrophils. Members of the formyl peptide receptor family recognize chemotactic peptides as well the amyloïd-beta peptide and fragments of the human immunodeficiency virus envelope and may thus be implicated in major pathologies. The peptide WKYMVm-NH2 probably activates the receptor FPRL1 and its mouse orthologues Fpr-rs1 and Fpr-rs2. We examined the stimulation of C57BL6 mouse neutrophils by WKYMVm-NH2 and the effects of several inhibitors for intracellular signalling pathways (wortmannin, LY 294002, staurosporin, H-89, U 73122, thapsigargin and SKF 96365). We show here that WKYMVm-NH2 is a powerful stimulator of primary and secondary granule exocytosis as well as superoxide production. The signalling pathway involves phosphoinositide 3-kinase, protein kinase C, phospholipase C and store-operated calcium influx. Studies with peptide antagonists suggest that WKYMVm-NH2 preferentially activates exocytosis via FPRL1 and not FPR, the major receptor for N-formylated peptides such as fMLF. However, the signalling pathways activated by WKYMVm-NH2 in mouse neutrophils are similar to those activated by fMLF in human neutrophils. Thus, the effect and the signalling pathways of the two agonists and their receptors are at least partially overlapping.
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Affiliation(s)
- R Boxio
- Laboratory of Experimental Biology - Immunology, University Nancy, Vandoeuvre-les-Nancy, France
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15
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Boxio R, Bossenmeyer-Pourié C, Steinckwich N, Dournon C, Nüsse O. Mouse bone marrow contains large numbers of functionally competent neutrophils. J Leukoc Biol 2003; 75:604-11. [PMID: 14694182 DOI: 10.1189/jlb.0703340] [Citation(s) in RCA: 249] [Impact Index Per Article: 11.9] [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: 11/24/2022] Open
Abstract
The mouse has become an important model for immunological studies including innate immunity. Creating transgenic mice offers unique possibilities to study gene-function relationships. However, relatively little is known about the physiology of neutrophils from wild-type mice. Do they behave like human neutrophils, or are there species-specific differences that need to be considered when extrapolating results from mice to humans? How do we isolate neutrophils from mice? For practical reasons, many studies on mouse neutrophils are done with bone marrow cells. However, human bone marrow neutrophils appear to be heterogeneous and functionally immature. We have isolated and compared neutrophils from mouse bone marrow and from peripheral blood obtained by tail bleeding. Using the same Percoll density gradient for both preparations, we have obtained morphologically mature neutrophils from bone marrow and blood. Both cell populations responded to formylmethionyl-leucyl-phenylalanine (fMLF) with primary and secondary granule release and superoxide production. Quantitative analysis of our data revealed minor differences between cells from bone marrow and blood. Superoxide production and primary granule release were stimulated at lower fMLF concentrations in blood neutrophils. However, the amplitude and the kinetics of maximal responses were similar. The principal difference was the lifespan of the two cell populations. Bone marrow cells survived significantly longer in culture, which may suggest that they are receiving antiapoptic signals that are absent in the blood. Our data suggest that mice have a large reservoir of functionally competent neutrophils in their bone marrow. This reservoir may be needed to replace circulating neutrophils rapidly during infection.
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Affiliation(s)
- Rachel Boxio
- Laboratoire de Biologie Expérimentale-Immunologie, Faculté des Sciences, Université de Nancy 1, Vandoeuvre, France.
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16
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Bossenmeyer-Pourié C, Lièvre V, Grojean S, Koziel V, Pillot T, Daval JL. Sequential expression patterns of apoptosis- and cell cycle-related proteins in neuronal response to severe or mild transient hypoxia. Neuroscience 2003; 114:869-82. [PMID: 12379243 DOI: 10.1016/s0306-4522(02)00324-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [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: 12/24/2022]
Abstract
Severe hypoxia was shown to induce apoptotic death in developing brain neurons, whereas mild hypoxia was demonstrated to stimulate neurogenesis. Since the apoptotic process may share common pathways with mitosis, expression profiles of proteins involved in apoptosis or the cell cycle were analyzed by immunohistochemistry and/or western blotting, in relation with cell outcome of cultured neurons from fetal rat forebrain subjected to either lethal (6 h) or non-lethal (3 h) hypoxia (95% N(2)/5% CO(2)). Hypoxia for 6 h led to apoptosis that was inhibited by the cell cycle blocker olomoucine. Transient overexpression of proliferating cell nuclear antigen was followed by increasing expression of p53, p21, Bax and caspases, whereas Bcl-2 and heat shock proteins were progressively repressed. Conversely, a 3-h hypoxic insult initiated neuronal mitosis, with increased thymidine incorporation. In these conditions, levels of proliferating cell nuclear antigen, Rb, Bcl-2 and heat shock proteins were persistently elevated, while expression of p53, p21, Bax and caspases gradually decreased. These data confirm that hypoxia promotes cell cycle activation, whatever the stress intensity. This process is then aborted following apoptosis-inducing hypoxia, whereas sublethal insult would trigger neurogenesis, at least in developing brain neurons in vitro, by stimulating timed expression of neurogenic and survival-associated proteins.
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Affiliation(s)
- C Bossenmeyer-Pourié
- Adaptation Néonatale and Développement (JE 2164), Université Henri Poincaré, Nancy, France
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17
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Bossenmeyer-Pourié C, Kannan R, Ribieras S, Wendling C, Stoll I, Thim L, Tomasetto C, Rio MC. The trefoil factor 1 participates in gastrointestinal cell differentiation by delaying G1-S phase transition and reducing apoptosis. J Cell Biol 2002; 157:761-70. [PMID: 12034770 PMCID: PMC2173421 DOI: 10.1083/jcb200108056] [Citation(s) in RCA: 134] [Impact Index Per Article: 6.1] [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] [Indexed: 12/13/2022] Open
Abstract
Trefoil factor (TFF)1 is synthesized and secreted by the normal stomach mucosa and by the gastrointestinal cells of injured tissues. The link between mouse TFF1 inactivation and the fully penetrant antropyloric tumor phenotype prompted the classification of TFF1 as a gastric tumor suppressor gene. Accordingly, altered expression, deletion, and/or mutations of the TFF1 gene are frequently observed in human gastric carcinomas. The present study was undertaken to address the nature of the cellular and molecular mechanisms targeted by TFF1 signalling. TFF1 effects were investigated in IEC18, HCT116, and AGS gastrointestinal cells treated with recombinant human TFF1, and in stably transfected HCT116 cells synthesizing constitutive or doxycycline-induced human TFF1. We observed that TFF1 triggers two types of cellular responses. On one hand, TFF1 lowers cell proliferation by delaying G1-S cell phase transition. This results from a TFF1-mediated increase in the levels of cyclin-dependent kinase inhibitors of both the INK4 and CIP subfamilies, leading to lower E2F transcriptional activity. On the other hand, TFF1 protects cells from chemical-, anchorage-free-, or Bad-induced apoptosis. In this process, TFF1 signalling targets the active form of caspase-9. Together, these results provide the first evidence of a dual antiproliferative and antiapoptotic role for TFF1. Similar paradoxical functions have been reported for tumor suppressor genes involved in cell differentiation, a function consistent with TFF1.
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Affiliation(s)
- Carine Bossenmeyer-Pourié
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Université Louis Pasteur, 67404 Illkirch Cedex, C.U. de Strasbourg, France
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18
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Lièvre V, Becuwe P, Bianchi A, Bossenmeyer-Pourié C, Koziel V, Franck P, Nicolas MB, Dauça M, Vert P, Daval JL. Intracellular generation of free radicals and modifications of detoxifying enzymes in cultured neurons from the developing rat forebrain in response to transient hypoxia. Neuroscience 2002; 105:287-97. [PMID: 11672596 DOI: 10.1016/s0306-4522(01)00189-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.3] [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
To address the influence of oxidative stress and defense capacities in the effects of transient hypoxia in the immature brain, the time course of reactive oxygen species generation was monitored by flow cytometry using dihydrorhodamine 123 and 2',7'-dichlorofluorescein-diacetate in cultured neurons issued from the fetal rat forebrain and subjected to hypoxia/reoxygenation (6 h/96 h). Parallel transcriptional and activity changes of superoxide dismutases, glutathione peroxidase and catalase were analyzed, in line with cell outcome. The study confirmed hypoxia-induced delayed apoptotic death, and depicted increased mitochondrial and cytosolic productions of free radicals (+30%) occurring over the 48-h period after the restoration of oxygen supply, with sequential stimulations of superoxide dismutases. Whereas catalase mRNA levels and activity were augmented by cell reoxygenation, glutathione peroxidase activity was transiently repressed (-24%), along with reduced glutathione reductase activity (-27%) and intracellular glutathione depletion (-19%). Coupled with the neuroprotective effects of the glutathione precursor N-acetyl-cysteine (50 microM), these data suggest that hypoxia/reoxygenation-induced production of reactive oxygen species can overwhelm glutathione-dependent antioxidant capacity, and thus may contribute to the resulting neuronal apoptosis.
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Affiliation(s)
- V Lièvre
- Adaptation Néonatale et Développement (JE 2164), Université Henri Poincaré, Nancy, France
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Kannan R, Tomasetto C, Staub A, Bossenmeyer-Pourié C, Thim L, Nielsen PF, Rio M. Human pS2/trefoil factor 1: production and characterization in Pichia pastoris. Protein Expr Purif 2001; 21:92-8. [PMID: 11162392 DOI: 10.1006/prep.2000.1352] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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: 11/22/2022]
Abstract
The recombinant protein human trefoil factor 1 (hTFF1), formerly called hpS2, has been produced for the first time in a yeast-based expression in Pichia pastoris. hTFF1 was secreted in large amounts in the extracellular medium of P. pastoris under the control of the glyceraldehyde-3-phosphate dehydrogenase promoter. The fermentation broth containing hTFF1 was concentrated by tangential flow filtration prior to purification by anion- and cation-exchange chromatography, followed by preparative high-performance liquid chromatography. The resulting hTFF1 was found to be intact by Western blot analysis. Further analysis revealed mainly the presence of the monomeric form of the hTFF1 peptide. Finally, in vitro, the recombinant hTFF1 was shown to decrease proliferation of the HCT116 cancer cells.
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Affiliation(s)
- R Kannan
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Centre National de la Recherche Scientifique, Université Louis Pasteur, 67404 Illkirch Cedex, C. U. de Strasbourg, France
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Bossenmeyer-Pourié C, Koziel V, Daval JL. Involvement of caspase-1 proteases in hypoxic brain injury. effects of their inhibitors in developing neurons. Neuroscience 2000; 95:1157-65. [PMID: 10682722 DOI: 10.1016/s0306-4522(99)00501-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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: 10/18/2022]
Abstract
To further explore the contribution of caspase-1/interleukin-1beta-convening enzyme in the consequences of hypoxia in developing brain neurons, its temporal expression profile was analysed by immunohistochemistry and western blotting in cultured neurons from the embryonic rat forebrain subjected to a hypoxic stress (95% N2/5% CO2 for 6 h), and proteolytic activity of caspase-1 was monitored as a function of time by measuring the degradation of a selective colorimetric substrate (N-acetyl-Tyr-Val-Ala-Asp-p-nitroanilide). In addition, the influence of pre- and posthypoxic treatments by caspase-1 inhibitors (N-acetyl-Tyr-Val-Ala-Asp-aldehyde and N-acetyl-Tyr-Val-Ala-Asp-chloromethylketone) was tested on cell outcome. Hypoxia led to delayed apoptotic neuronal death, with an elevation of the expression of both pro-caspase-1 and caspase-1 active cleavage product (ICE p20) for up to 96 h after cell reoxygenation. As reflected by cleavage of the specific substrate, caspase-1 activity progressively increased between 24 h and 96 h posthypoxia, and was blocked by inhibitors in a dose-dependent fashion. The inhibitory compounds, including when given 24 h after hypoxia, prevented neuronal death, reduced apoptosis hallmarks and also increased the number of mitotic neurons, suggesting they might promote neurogenesis. Similar observations were made when neurons were exposed to a sublethal hypoxia (i.e. 3 h). These data emphasize the participation of caspase-1 in neuronal injury consecutive to oxygen deprivation, and provide new insight into the possible cellular mechanisms by which caspase inhibitors may protect developing brain neurons.
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Bossenmeyer-Pourié C, Koziel V, Daval JL. Effects of hypothermia on hypoxia-induced apoptosis in cultured neurons from developing rat forebrain: comparison with preconditioning. Pediatr Res 2000; 47:385-91. [PMID: 10709740 DOI: 10.1203/00006450-200003000-00017] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
In neuronal cultures from the forebrain of 14-d-old rat embryos, transient hypoxia (95% N2/5% CO2, 37 degrees C) for 6 h has been shown to trigger delayed apoptotic death through sequential changes in protein synthesis, whereas preconditioning by a brief episode of hypoxia can rescue neurons. Because hypothermia has been reported to be neuroprotective, the present study was designed to test the influence of reduced temperature on the consequences of lethal hypoxia in our culture model, and cellular mechanisms involved were compared with those underlying preconditioning effects. After 6 d in vitro, cultures were subjected to hypoxia for 6 h. They were either placed at 32 degrees C concomitantly with hypoxia for 6 h or preconditioned the day before by a 1-h episode of hypoxia. The hypoxic insult decreased cell viability by 38% at 96 h after reoxygenation, and 23% of the neurons showed morphologic features of apoptosis. Both hypothermia and preconditioning prevented neuronal death and reduced apoptosis. Preconditioning led to time-dependent changes in leucine incorporation, with persistent overexpression of the survival proteins Bcl-2 and heat-shock protein 70. It also increased thymidine incorporation, in line with induction of the cofactor for DNA polymerase, proliferating cell nuclear antigen. Hypothermia reduced basal apoptosis and necrosis, but did not affect thymidine incorporation, and abolished hypoxia-associated protein synthesis. Therefore, both treatments were protective against neuronal injury consecutive to hypoxia in developing brain neurons in vitro. Whereas preconditioning activated a program that stimulated the expression of anti-apoptotic gene products and regulatory components of the cell cycle, hypothermia did not trigger active processes, but depressed cell activity, which in turn may impair the apoptotic phenomenon.
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Bossenmeyer-Pourié C, Koziel V, Daval JL. CPP32/CASPASE-3-like proteases in hypoxia-induced apoptosis in developing brain neurons. Brain Res Mol Brain Res 1999; 71:225-37. [PMID: 10521577 DOI: 10.1016/s0169-328x(99)00190-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Since caspase members have been identified as effectors of apoptosis, the role of CPP32/caspase-3 was further explored in cultured neurons from the embryonic rat forebrain submitted to a 6-h hypoxia which has previously been shown to induce apoptotic death within four days after reoxygenation, whereas a shorter aggression (i.e., for 3 h) leads by the same time to an increased number of living neurons, suggesting that sublethal hypoxia may promote neurogenesis. Neuronal expression of the active cleavage product of CPP32 (CPP32 p20) increased specifically after hypoxia for 6 h to finally reach 985% over control normoxic values at 96 h post-insult, while a 3-h hypoxia triggered the inducible stress protein HSP70 that has been shown to inhibit caspase-3. Proteolytic activity of caspase-3 was progressively stimulated by lethal hypoxia, as reflected by the degradation of two selective substrates, including poly (ADP-ribose) polymerase (PARP). Caspase-3 activity was blocked specifically and dose-dependently by the peptide inhibitor, DEVD-CHO, that reduced the number of apoptotic cells and prevented the hypoxia-induced decrease in cell viability, including when given 24 h post-insult. Interestingly, in these conditions, the inhibitory compounds enhanced the number of mitotic neurons. These data emphasize the critical role of caspase-3 in neuronal injury consecutive to hypoxia. Whereas caspase inhibitors may provide benefit over a broad therapeutic window, they might allow developing neurons to complete their cell cycle initiated in response to stress, as it is the case for sublethal hypoxia.
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Affiliation(s)
- C Bossenmeyer-Pourié
- JE 2164, Université Henri Poincaré - Nancy 1, 24-30 rue Lionnois, B.P. 3069, 54013, Nancy, France
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Bossenmeyer-Pourié C, Chihab R, Schroeder H, Daval JL. Transient hypoxia may lead to neuronal proliferation in the developing mammalian brain: from apoptosis to cell cycle completion. Neuroscience 1999; 91:221-31. [PMID: 10336073 DOI: 10.1016/s0306-4522(98)00565-x] [Citation(s) in RCA: 40] [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: 11/19/2022]
Abstract
Cerebral hypoxia/ischemia was shown to induce delayed, apoptotic neuronal death occurring through biochemical pathways potentially sharing common events with cell proliferation. This study was designed to test the hypothesis that a sublethal hypoxia may promote mitotic activity in developing central neurons. After six days in vitro, cultured neurons from the forebrain of 14-day-old rat embryos were exposed to hypoxia (95% N2/5% CO2) for 3 h and re-oxygenated for up to 96 h. Controls were kept in normoxia. As a function of time, cell viability was measured by diphenyltetrazolium bromide, and rates of DNA and protein synthesis were monitored using [3H]thymidine and [3H]leucine, respectively. Morphological features of apoptosis, necrosis and mitosis were scored under fluorescence microscopy after nuclear staining with 4,6-diamidino-2-phenylindole, and the expression profile of proliferating cell nuclear antigen, a cofactor for DNA polymerase, was analysed by immunohistochemistry. Data were compared to those obtained after transient hypoxia for 6 h followed by re-oxygenation for 96 h and which was shown to induce apoptosis. Whereas a 6-h insult reduced cell viability, with 23% of the neurons exhibiting apoptosis by the end of re-oxygenation, a 3-h hypoxia led to a cycloheximide-sensitive increase in the final number of living neurons compared to controls (13%, P < 0.01), with no signs of apoptosis, significantly increased thymidine incorporation into acid-precipitable fraction, and persistent over-expression of proliferating cell nuclear antigen. Accordingly, final score of mitotic nuclei was significantly enhanced. In addition, the cell cycle inhibitor olomoucine (50 microM) prevented apoptosis consecutive to a 6-h hypoxia, but impaired the stimulatory effects of a 3-h insult. These findings support the conclusion that some neurons exposed to sublethal hypoxia may dodge apoptotic death by fully achieving the cell cycle.
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Bossenmeyer-Pourié C, Daval JL. Prevention from hypoxia-induced apoptosis by pre-conditioning: a mechanistic approach in cultured neurons from fetal rat forebrain. Brain Res Mol Brain Res 1998; 58:237-9. [PMID: 9685661 DOI: 10.1016/s0169-328x(98)00123-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Molecular effects of pre-conditioning by 1-h hypoxia were investigated in cultured neurons from fetal rat forebrain, submitted the following day to a 6-h hypoxia that induces apoptosis. While preventing from apoptosis, pre-conditioning led to increased number of living neurons, DNA synthesis, with persistent overexpression of Bcl-2 and proliferating cell nuclear antigen (PCNA). Adaptative mechanisms would involve anti-apoptotic proteins and regulators of the cell cycle, to finally promote neuronal proliferation.
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Affiliation(s)
- C Bossenmeyer-Pourié
- JE 2164-Adaptation Néonatale and Développement, Université Henri Poincaré, 24-30 rue Lionnois, B.P. 3069, 54013 Nancy Cedex, France
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