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Lim JR, Chae CW, Park JY, Jung YH, Yoon JH, Kim MJ, Lee HJ, Choi GE, Han HJ. Ethanol-induced ceramide production causes neuronal apoptosis by increasing MCL-1S-mediated ER-mitochondria contacts. Neurobiol Dis 2023; 177:106009. [PMID: 36689912 DOI: 10.1016/j.nbd.2023.106009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/06/2023] [Accepted: 01/19/2023] [Indexed: 01/21/2023] Open
Abstract
Heavy alcohol consumption causes neuronal cell death and cognitive impairment. Neuronal cell death induced by ethanol may result from increased production of the sphingolipid metabolite ceramide. However, the molecular mechanisms of neuronal cell death caused by ethanol-induced ceramide production have not been elucidated. Therefore, we investigated the mechanism through which ethanol-induced ceramide production causes neuronal cell apoptosis using human induced-pluripotent stem cell-derived neurons and SH-SY5Y cells and identified the effects of ceramide on memory deficits in C57BL/6 mice. First, we found that ethanol-induced ceramide production was decreased by inhibition of the de novo synthesis pathway, mediated by serine palmitoyltransferase (SPT). The associated alterations of the molecules related to the ceramide pathway suggest that the elevated level of ceramide activated protein phosphatase 1 (PP1), which inhibited the nuclear translocation of serine/arginine-rich splicing factor 1 (SRSF1). This led to aberrant splicing of myeloid cell leukemia 1 (MCL-1) pre-mRNA, which upregulated MCL-1S expression. Our results demonstrated that the interaction of MCL-1S with the inositol 1, 4, 5-trisphosphate receptor (IP3R) increases calcium release from the endoplasmic reticulum (ER) and then activated ER-bound inverted formin 2 (INF2). In addition, we discovered that F-actin polymerization through INF2 activation promoted ER-mitochondria contacts, which induced mitochondrial calcium influx and mitochondrial reactive oxygen species (mtROS) production. Markedly, MCL-1S silencing decreased mitochondria-associated ER membrane (MAM) formation and prevented mitochondrial calcium influx and mtROS accumulation, by inhibiting INF2-dependent actin polymerization interacting with mitochondria. Furthermore, the inhibition of ceramide production in ethanol-fed mice reduced MCL-1S expression, neuronal cell death, and cognitive impairment. In conclusion, we suggest that ethanol-induced ceramide production may lead to mitochondrial calcium overload through MCL-1S-mediated INF2 activation-dependent MAM formation, which promotes neuronal apoptosis.
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Affiliation(s)
- Jae Ryong Lim
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Chang Woo Chae
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ji Yong Park
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Young Hyun Jung
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jee Hyeon Yoon
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Min Jeong Kim
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hyun Jik Lee
- Laboratory of Veterinary Physiology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea; Institute for Stem Cell & Regenerative Medicine (ISCRM), Chungbuk National University, Cheongju, Chungbuk, 28644, Republic of Korea
| | - Gee Euhn Choi
- Laboratory of Veterinary Biochemistry, College of Veterinary Medicine, Jeju National University, Jeju, 63243, Republic of Korea
| | - Ho Jae Han
- Department of Veterinary Physiology, College of Veterinary Medicine, Research Institute for Veterinary Science, and BK21 Four Future Veterinary Medicine Leading Education & Research Center, Seoul National University, Seoul, 08826, Republic of Korea.
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Kunc M, Dobeš P, Ward R, Lee S, Čegan R, Dostálková S, Holušová K, Hurychová J, Eliáš S, Pinďáková E, Čukanová E, Prodělalová J, Petřivalský M, Danihlík J, Havlík J, Hobza R, Kavanagh K, Hyršl P. Omics-based analysis of honey bee (Apis mellifera) response to Varroa sp. parasitisation and associated factors reveals changes impairing winter bee generation. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2023; 152:103877. [PMID: 36403678 DOI: 10.1016/j.ibmb.2022.103877] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/24/2022] [Accepted: 11/13/2022] [Indexed: 06/16/2023]
Abstract
The extensive annual loss of honey bees (Apis mellifera L.) represents a global problem affecting agriculture and biodiversity. The parasitic mite Varroa destructor, associated with viral co-infections, plays a key role in this loss. Despite years of intensive research, the complex mechanisms of Varroa - honey bee interaction are still not fully defined. Therefore, this study employed a unique combination of transcriptomic, proteomic, metabolomic, and functional analyses to reveal new details about the effect of Varroa mites and naturally associated factors, including viruses, on honey bees. We focused on the differences between Varroa parasitised and unparasitised ten-day-old worker bees collected before overwintering from the same set of colonies reared without anti-mite treatment. Supplementary comparison to honey bees collected from colonies with standard anti-Varroa treatment can provide further insights into the effect of a pyrethroid flumethrin. Analysis of the honey bees exposed to mite parasitisation revealed alterations in the transcriptome and proteome related to immunity, oxidative stress, olfactory recognition, metabolism of sphingolipids, and RNA regulatory mechanisms. The immune response and sphingolipid metabolism were strongly activated, whereas olfactory recognition and oxidative stress pathways were inhibited in Varroa parasitised honey bees compared to unparasitised ones. Moreover, metabolomic analysis confirmed the depletion of nutrients and energy stores, resulting in a generally disrupted metabolism in the parasitised workers. The combined omics-based analysis conducted on strictly parasitised bees revealed the key molecular components and mechanisms underlying the detrimental effects of Varroa sp. and its associated pathogens. This study provides the theoretical basis and interlinked datasets for further research on honey bee response to biological threats and the development of efficient control strategies against Varroa mites.
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Affiliation(s)
- Martin Kunc
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Pavel Dobeš
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.
| | - Rachel Ward
- Department of Biology, Maynooth University, W23 F2K8 Maynooth, Co. Kildare, Ireland
| | - Saetbyeol Lee
- Department of Food Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Prague, Czech Republic
| | - Radim Čegan
- Department of Plant Developmental Genetics, Institute of Biophysics of the Czech Academy of Sciences, Královopolská 135, 612 00, Brno, Czech Republic
| | - Silvie Dostálková
- Department of Biochemistry, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic
| | - Kateřina Holušová
- Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 779 00, Olomouc, Czech Republic
| | - Jana Hurychová
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Sara Eliáš
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Eliška Pinďáková
- Department of Biochemistry, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic
| | - Eliška Čukanová
- Department of Infectious Disease and Preventive Medicine, Veterinary Research Institute, Hudcova 296/70, 621 00, Brno, Czech Republic
| | - Jana Prodělalová
- Department of Infectious Disease and Preventive Medicine, Veterinary Research Institute, Hudcova 296/70, 621 00, Brno, Czech Republic
| | - Marek Petřivalský
- Department of Biochemistry, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic
| | - Jiří Danihlík
- Department of Biochemistry, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic
| | - Jaroslav Havlík
- Department of Food Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Prague, Czech Republic
| | - Roman Hobza
- Department of Plant Developmental Genetics, Institute of Biophysics of the Czech Academy of Sciences, Královopolská 135, 612 00, Brno, Czech Republic
| | - Kevin Kavanagh
- Department of Biology, Maynooth University, W23 F2K8 Maynooth, Co. Kildare, Ireland
| | - Pavel Hyršl
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
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Homans C, Yalcin EB, Tong M, Gallucci G, Bautista D, Moriel N, de la Monte S. Therapeutic Effects of Myriocin in Experimental Alcohol-Related Neurobehavioral Dysfunction and Frontal Lobe White Matter Biochemical Pathology. JOURNAL OF BEHAVIORAL AND BRAIN SCIENCE 2022; 12:23-42. [PMID: 36815096 PMCID: PMC9942847 DOI: 10.4236/jbbs.2022.122003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background & Objective Chronic excessive alcohol consumption causes white matter degeneration with myelin loss and impaired neuronal conductivity. Subsequent rarefaction of myelin accounts for the sustained deficits in cognition, learning, and memory. Correspondingly, chronic heavy or repeated binge alcohol exposures in humans and experimental models alter myelin lipid composition leading to build-up of ceramides which can be neurotoxic and broadly inhibitory to brain functions. Methods This study examined the effects of chronic + binge alcohol exposures (8 weeks) and intervention with myriocin, a ceramide inhibitor, on neurobehavioral functions (Open Field, Novel Object Recognition, and Morris Water Maze tests) and frontal lobe white matter myelin lipid biochemical pathology in an adult Long-Evans rat model. Results The ethanol-exposed group had significant deficits in executive functions with increased indices of anxiety and impairments in spatial learning acquisition. Myriocin partially remediated these effects of ethanol while not impacting behavior in the control group. Ethanol-fed rats had significantly smaller brains with broadly reduced expression of sulfatides and reduced expression of two of the three sphingomyelins detected in frontal white matter. Myriocin partially resolved these effects corresponding with improvements in neurobehavioral function. Conclusion Therapeutic strategies that support cerebral white matter myelin expression of sulfatide and sphingomyelin may help remediate cognitive-behavioral dysfunction following chronic heavy alcohol consumption in humans.
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Affiliation(s)
- Camilla Homans
- Biotechnology Graduate Program, Brown University, Providence, RI, USA
| | - Emine B. Yalcin
- Department of Pathology and Laboratory Medicine, Warren Alpert Medical School of Brown University, Providence, RI, USA,Liver Research Center, Department of Medicine, Rhode Island Hospital, Providence, RI, USA
| | - Ming Tong
- Liver Research Center, Department of Medicine, Rhode Island Hospital, Providence, RI, USA
| | - Gina Gallucci
- Liver Research Center, Department of Medicine, Rhode Island Hospital, Providence, RI, USA
| | - David Bautista
- Warren Alpert Medical School of Brown University, Providence, RI, USA,Brown University, Providence, RI, USA
| | - Natalia Moriel
- Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Suzanne de la Monte
- Department of Pathology and Laboratory Medicine, Warren Alpert Medical School of Brown University, Providence, RI, USA,Warren Alpert Medical School of Brown University, Providence, RI, USA,Department of Pathology and Laboratory Medicine, Rhode Island Hospital, Women and Infants Hospital of Rhode Island, Providence VA Medical Center, Providence, RI, USA,
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Gupta P, Taiyab A, Hussain A, Alajmi MF, Islam A, Hassan MI. Targeting the Sphingosine Kinase/Sphingosine-1-Phosphate Signaling Axis in Drug Discovery for Cancer Therapy. Cancers (Basel) 2021; 13:1898. [PMID: 33920887 PMCID: PMC8071327 DOI: 10.3390/cancers13081898] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/11/2021] [Accepted: 04/03/2021] [Indexed: 02/07/2023] Open
Abstract
Sphingolipid metabolites have emerged as critical players in the regulation of various physiological processes. Ceramide and sphingosine induce cell growth arrest and apoptosis, whereas sphingosine-1-phosphate (S1P) promotes cell proliferation and survival. Here, we present an overview of sphingolipid metabolism and the compartmentalization of various sphingolipid metabolites. In addition, the sphingolipid rheostat, a fine metabolic balance between ceramide and S1P, is discussed. Sphingosine kinase (SphK) catalyzes the synthesis of S1P from sphingosine and modulates several cellular processes and is found to be essentially involved in various pathophysiological conditions. The regulation and biological functions of SphK isoforms are discussed. The functions of S1P, along with its receptors, are further highlighted. The up-regulation of SphK is observed in various cancer types and is also linked to radio- and chemoresistance and poor prognosis in cancer patients. Implications of the SphK/S1P signaling axis in human pathologies and its inhibition are discussed in detail. Overall, this review highlights current findings on the SphK/S1P signaling axis from multiple angles, including their functional role, mechanism of activation, involvement in various human malignancies, and inhibitor molecules that may be used in cancer therapy.
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Affiliation(s)
- Preeti Gupta
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India; (P.G.); (A.T.); (A.I.)
| | - Aaliya Taiyab
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India; (P.G.); (A.T.); (A.I.)
| | - Afzal Hussain
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (A.H.); (M.F.A.)
| | - Mohamed F. Alajmi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (A.H.); (M.F.A.)
| | - Asimul Islam
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India; (P.G.); (A.T.); (A.I.)
| | - Md. Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India; (P.G.); (A.T.); (A.I.)
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5
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Assi N, Thomas DC, Leitzmann M, Stepien M, Chajès V, Philip T, Vineis P, Bamia C, Boutron-Ruault MC, Sandanger TM, Molinuevo A, Boshuizen HC, Sundkvist A, Kühn T, Travis RC, Overvad K, Riboli E, Gunter MJ, Scalbert A, Jenab M, Ferrari P, Viallon V. Are Metabolic Signatures Mediating the Relationship between Lifestyle Factors and Hepatocellular Carcinoma Risk? Results from a Nested Case-Control Study in EPIC. Cancer Epidemiol Biomarkers Prev 2018; 27:531-540. [PMID: 29563134 PMCID: PMC7444360 DOI: 10.1158/1055-9965.epi-17-0649] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 09/20/2017] [Accepted: 01/17/2018] [Indexed: 12/16/2022] Open
Abstract
Background: The "meeting-in-the-middle" (MITM) is a principle to identify exposure biomarkers that are also predictors of disease. The MITM statistical framework was applied in a nested case-control study of hepatocellular carcinoma (HCC) within European Prospective Investigation into Cancer and Nutrition (EPIC), where healthy lifestyle index (HLI) variables were related to targeted serum metabolites.Methods: Lifestyle and targeted metabolomic data were available from 147 incident HCC cases and 147 matched controls. Partial least squares analysis related 7 lifestyle variables from a modified HLI to a set of 132 serum-measured metabolites and a liver function score. Mediation analysis evaluated whether metabolic profiles mediated the relationship between each lifestyle exposure and HCC risk.Results: Exposure-related metabolic signatures were identified. Particularly, the body mass index (BMI)-associated metabolic component was positively related to glutamic acid, tyrosine, PC aaC38:3, and liver function score and negatively to lysoPC aC17:0 and aC18:2. The lifetime alcohol-specific signature had negative loadings on sphingomyelins (SM C16:1, C18:1, SM(OH) C14:1, C16:1 and C22:2). Both exposures were associated with increased HCC with total effects (TE) = 1.23 (95% confidence interval = 0.93-1.62) and 1.40 (1.14-1.72), respectively, for BMI and alcohol consumption. Both metabolic signatures mediated the association between BMI and lifetime alcohol consumption and HCC with natural indirect effects, respectively, equal to 1.56 (1.24-1.96) and 1.09 (1.03-1.15), accounting for a proportion mediated of 100% and 24%.Conclusions: In a refined MITM framework, relevant metabolic signatures were identified as mediators in the relationship between lifestyle exposures and HCC risk.Impact: The understanding of the biological basis for the relationship between modifiable exposures and cancer would pave avenues for clinical and public health interventions on metabolic mediators. Cancer Epidemiol Biomarkers Prev; 27(5); 531-40. ©2018 AACR.
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Affiliation(s)
- Nada Assi
- Section of Nutrition and Metabolism, International Agency for Research on Cancer (IARC), Lyon, France
| | | | - Michael Leitzmann
- Department of Epidemiology and Preventive Medicine, Regensburg University, Regensburg, Germany
| | - Magdalena Stepien
- Section of Nutrition and Metabolism, International Agency for Research on Cancer (IARC), Lyon, France
| | - Véronique Chajès
- Section of Nutrition and Metabolism, International Agency for Research on Cancer (IARC), Lyon, France
| | - Thierry Philip
- Unité Cancer et Environnement, Centre Léon Bérard, Lyon, France
| | - Paolo Vineis
- Department of Epidemiology and Biostatistics, MRC-HPA Centre for Environment and Health, School of Public Health, Imperial College London, London, United Kingdom
| | - Christina Bamia
- Hellenic Health Foundation, Athens, Greece
- WHO Collaborating Center for Nutrition and Health, Unit of Nutritional Epidemiology and Nutrition in Public Health, Department of Hygiene, Epidemiology and Medical Statistics, University of Athens Medical School, Athens, Greece
| | | | - Torkjel M Sandanger
- Department of Community Medicine, UiT the Arctic University of Norway, Tromsø, Norway
| | - Amaia Molinuevo
- Public Health Division of Gipuzkoa, Regional Government of the Basque Country, Donostia-San Sebastián, Spain
- CIBER of Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Hendriek C Boshuizen
- National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | - Anneli Sundkvist
- Department of Radiation Sciences Oncology, Umeå University, Umeå, Sweden
| | - Tilman Kühn
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ruth C Travis
- Cancer Epidemiology Unit, University of Oxford, Oxford, United Kingdom
| | - Kim Overvad
- The Department of Epidemiology, School of Public Health, Aarhus University, Aarhus, Denmark
| | - Elio Riboli
- Department of Epidemiology and Biostatistics, MRC-HPA Centre for Environment and Health, School of Public Health, Imperial College London, London, United Kingdom
| | - Marc J Gunter
- Section of Nutrition and Metabolism, International Agency for Research on Cancer (IARC), Lyon, France
| | - Augustin Scalbert
- Section of Nutrition and Metabolism, International Agency for Research on Cancer (IARC), Lyon, France
| | - Mazda Jenab
- Section of Nutrition and Metabolism, International Agency for Research on Cancer (IARC), Lyon, France
| | - Pietro Ferrari
- Section of Nutrition and Metabolism, International Agency for Research on Cancer (IARC), Lyon, France.
| | - Vivian Viallon
- Section of Nutrition and Metabolism, International Agency for Research on Cancer (IARC), Lyon, France
- Université de Lyon, Université Claude Bernard Lyon1, Ifsttar, UMRESTTE, Lyon, France
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Castillo RI, Rojo LE, Henriquez-Henriquez M, Silva H, Maturana A, Villar MJ, Fuentes M, Gaspar PA. From Molecules to the Clinic: Linking Schizophrenia and Metabolic Syndrome through Sphingolipids Metabolism. Front Neurosci 2016; 10:488. [PMID: 27877101 PMCID: PMC5100552 DOI: 10.3389/fnins.2016.00488] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 10/12/2016] [Indexed: 12/12/2022] Open
Abstract
Metabolic syndrome (MS) is a prevalent and severe comorbidity observed in schizophrenia (SZ). The exact nature of this association is controversial and very often accredited to the effects of psychotropic medications and disease-induced life-style modifications, such as inactive lifestyle, poor dietary choices, and smoking. However, drug therapy and disease-induced lifestyle factors are likely not the only factors contributing to the observed converging nature of these conditions, since an increased prevalence of MS is also observed in first episode and drug-naïve psychosis populations. MS and SZ share common intrinsic susceptibility factors and etiopathogenic mechanisms, which may change the way we approach clinical management of SZ patients. Among the most relevant common pathogenic pathways of SZ and MS are alterations in the sphingolipids (SLs) metabolism and SLs homeostasis. SLs have important structural functions as they participate in the formation of membrane “lipid rafts.” SLs also play physiological roles in cell differentiation, proliferation, and inflammatory processes, which might be part of MS/SZ common pathophysiological processes. In this article we review a plausible mechanism to explain the link between MS and SZ through a disruption in SL homeostasis. Additionally, we provide insights on how this hypothesis can lead to the developing of new diagnostic/therapeutic technologies for SZ patients.
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Affiliation(s)
- Rolando I Castillo
- Translational Psychiatry Laboratory, Clínica Psiquiátrica Universitaria, Hospital Clínico Universidad de Chile Santiago, Chile
| | - Leonel E Rojo
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile Santiago, Chile
| | - Marcela Henriquez-Henriquez
- Departamento de Laboratorios Clínicos, Escuela de Medicina, Pontificia Universidad Católica de ChileSantiago, Chile; Department of Pediatrics, Institute of Human Nutrition, College of Physicians and Surgeons, Columbia UniversityNew York, NY, USA; Department of Pathology and Cell Biology, Columbia UniversityNew York, NY, USA
| | - Hernán Silva
- Translational Psychiatry Laboratory, Clínica Psiquiátrica Universitaria, Hospital Clínico Universidad de ChileSantiago, Chile; Facultad de Medicina, Biomedical Neuroscience Institute, Universidad de ChileSantiago, Chile
| | - Alejandro Maturana
- Translational Psychiatry Laboratory, Clínica Psiquiátrica Universitaria, Hospital Clínico Universidad de Chile Santiago, Chile
| | - María J Villar
- Translational Psychiatry Laboratory, Clínica Psiquiátrica Universitaria, Hospital Clínico Universidad de Chile Santiago, Chile
| | - Manuel Fuentes
- Departamento de Psiquiatría, Clínica Alemana Santiago, Chile
| | - Pablo A Gaspar
- Translational Psychiatry Laboratory, Clínica Psiquiátrica Universitaria, Hospital Clínico Universidad de ChileSantiago, Chile; Facultad de Medicina, Biomedical Neuroscience Institute, Universidad de ChileSantiago, Chile; Departamento de Psiquiatría, Clínica AlemanaSantiago, Chile
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7
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Ethanol effects on histobiochemical parameters of suckling pups borned from alcoholic rat mothers. COMPARATIVE CLINICAL PATHOLOGY 2016. [DOI: 10.1007/s00580-016-2270-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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8
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Saito M, Wu G, Hui M, Masiello K, Dobrenis K, Ledeen RW, Saito M. Ganglioside accumulation in activated glia in the developing brain: comparison between WT and GalNAcT KO mice. J Lipid Res 2015; 56:1434-48. [PMID: 26063460 PMCID: PMC4513985 DOI: 10.1194/jlr.m056580] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 06/08/2015] [Indexed: 12/30/2022] Open
Abstract
Our previous studies have shown accumulation of GM2 ganglioside during ethanol-induced neurodegeneration in the developing brain, and GM2 elevation has also been reported in other brain injuries and neurodegenerative diseases. Using GM2/GD2 synthase KO mice lacking GM2/GD2 and downstream gangliosides, the current study explored the significance of GM2 elevation in WT mice. Immunohistochemical studies indicated that ethanol-induced acute neurodegeneration in postnatal day 7 (P7) WT mice was associated with GM2 accumulation in the late endosomes/lysosomes of both phagocytic microglia and increased glial fibrillary acidic protein (GFAP)-positive astrocytes. However, in KO mice, although ethanol induced robust neurodegeneration and accumulation of GD3 and GM3 in the late endosomes/lysosomes of phagocytic microglia, it did not increase the number of GFAP-positive astrocytes, and the accumulation of GD3/GM3 in astrocytes was minimal. Not only ethanol, but also DMSO, induced GM2 elevation in activated microglia and astrocytes along with neurodegeneration in P7 WT mice, while lipopolysaccharide, which did not induce significant neurodegeneration, caused GM2 accumulation mainly in lysosomes of activated astrocytes. Thus, GM2 elevation is associated with activation of microglia and astrocytes in the injured developing brain, and GM2, GD2, or other downstream gangliosides may regulate astroglial responses in ethanol-induced neurodegeneration.
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Affiliation(s)
- Mariko Saito
- Divisions of Neurochemistry Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY 10962
- Department of Psychiatry, New York University Langone Medical Center, New York, NY 10016
| | - Gusheng Wu
- Department of Neurology and Neurosciences, Rutgers-New Jersey Medical School, Newark, NJ 07103
| | - Maria Hui
- Divisions of Neurochemistry Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY 10962
| | - Kurt Masiello
- Divisions of Neurochemistry Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY 10962
| | - Kostantin Dobrenis
- Dominick P. Purpura Department of Neuroscience, Rose F. Kennedy Center, Albert Einstein College of Medicine of Yeshiva University, Bronx, NY 10461
| | - Robert W. Ledeen
- Department of Neurology and Neurosciences, Rutgers-New Jersey Medical School, Newark, NJ 07103
| | - Mitsuo Saito
- Analytical Psychopharmacology, Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY 10962
- Department of Psychiatry, New York University Langone Medical Center, New York, NY 10016
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Tang N, Bamford P, Jones J, He M, Kane MA, Mooney SM, Bearer CF. Choline partially prevents the impact of ethanol on the lipid raft dependent functions of l1 cell adhesion molecule. Alcohol Clin Exp Res 2015; 38:2722-30. [PMID: 25421509 DOI: 10.1111/acer.12554] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 08/23/2014] [Indexed: 12/23/2022]
Abstract
BACKGROUND Fetal alcohol spectrum disorder, the leading known cause of mental retardation, is caused by alcohol exposure during pregnancy. One mechanism of ethanol (EtOH) teratogenicity is the disruption of the functions of L1 cell adhesion molecule (L1). These functions include enhancement of neurite outgrowth, trafficking through lipid rafts, and signal transduction. Recent data have shown that choline supplementation of rat pups reduces the effects of EtOH on neurobehavior. We sought to determine whether choline could prevent the effect of EtOH on L1 function using a simple experimental system. METHODS Cerebellar granule neurons (CGN) from postnatal day 6 rat pups were cultured with and without supplemental choline, and the effects on L1 signaling, lipid raft distribution, and neurite outgrowth were measured in the presence or absence of EtOH. RESULTS Choline significantly reduced the effect of EtOH on L1 signaling, the distribution of L1 in lipid rafts and L1-mediated neurite outgrowth. However, choline supplemented EtOH-exposed cultures remained significantly different than controls. CONCLUSIONS Choline pretreatment of CGN significantly reduces the disruption of L1 function by EtOH, but does not completely return L1 function to baseline. This experimental system will enable discovery of the mechanism of the neuroprotective effect of choline.
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Affiliation(s)
- Ningfeng Tang
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, Maryland
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