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Cobelo-Gómez S, Sánchez-Iglesias S, Rábano A, Senra A, Aguiar P, Gómez-Lado N, García-Varela L, Burgueño-García I, Lampón-Fernández L, Fernández-Pombo A, Díaz-López EJ, Prado-Moraña T, San Millán B, Araújo-Vilar D. A murine model of BSCL2-associated Celia's encephalopathy. Neurobiol Dis 2023; 187:106300. [PMID: 37717662 DOI: 10.1016/j.nbd.2023.106300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 09/06/2023] [Accepted: 09/14/2023] [Indexed: 09/19/2023] Open
Abstract
Celia's encephalopathy or progressive encephalopathy with/without lipodystrophy is a neurodegenerative disease with a fatal prognosis in childhood. It is generally caused by the c.985C > T variant in the BSCL2 gene, leading to the skipping of exon 7 and resulting in an aberrant seipin protein (Celia-seipin). To precisely define the temporal evolution and the mechanisms involved in neurodegeneration, lipodystrophy and fatty liver in Celia's encephalopathy, our group has generated the first global knock-in murine model for the aberrant human transcript of BSCL2 (Bscl2Celia/Celia) using a strategy based on the Cre/loxP recombination system. In order to carry out a characterization at the neurological, adipose tissue and hepatic level, behavioral studies, brain PET, metabolic, histological and molecular studies were performed. Around 12% of homozygous and 5.4% of heterozygous knock-in mice showed severe neurological symptoms early in life, and their life expectancy was dramatically reduced. Severe generalized lipodystrophy and mild hepatic steatosis were present in these affected animals, while serum triglycerides and glucose metabolism were normal, with no insulin resistance. Furthermore, the study revealed a reduction in brain glucose uptake, along with patchy loss of Purkinje cells and the presence of intranuclear inclusions in cerebellar cortex cells. Homozygous, non-severely-affected knock-in mice showed a decrease in locomotor activity and greater anxiety compared with their wild type littermates. Bscl2Celia/Celia is the first murine model of Celia's encephalopathy which partially recapitulates the phenotype and severe neurodegenerative picture suffered by these patients. This model will provide a helpful tool to investigate both the progressive encephalopathy with/without lipodystrophy and congenital generalized lipodystrophy.
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Affiliation(s)
- Silvia Cobelo-Gómez
- UETeM-Molecular Pathology Group. Department of Psychiatry, Radiology, Public Health, Nursing and Medicine, IDIS-CIMUS, University of Santiago de Compostela, Spain
| | - Sofía Sánchez-Iglesias
- UETeM-Molecular Pathology Group. Department of Psychiatry, Radiology, Public Health, Nursing and Medicine, IDIS-CIMUS, University of Santiago de Compostela, Spain
| | - Alberto Rábano
- Alzheimer's Disease Research Unit, CIEN Foundation, Queen Sofia Foundation Alzheimer Center, Madrid, Spain
| | - Ana Senra
- Department of Physiology, CIMUS, University of Santiago de Compostela, Spain
| | - Pablo Aguiar
- Molecular Imaging and Medical Physics, University of Santiago de Compostela-IDIS, Spain; Nuclear Medicine and Molecular Imaging Group, IDIS, University Clinical Hospital of Santiago de Compostela, Spain
| | - Noemí Gómez-Lado
- Molecular Imaging and Medical Physics, University of Santiago de Compostela-IDIS, Spain; Nuclear Medicine and Molecular Imaging Group, IDIS, University Clinical Hospital of Santiago de Compostela, Spain
| | - Lara García-Varela
- Molecular Imaging and Medical Physics, University of Santiago de Compostela-IDIS, Spain; Nuclear Medicine and Molecular Imaging Group, IDIS, University Clinical Hospital of Santiago de Compostela, Spain
| | - Iván Burgueño-García
- Alzheimer's Disease Research Unit, CIEN Foundation, Queen Sofia Foundation Alzheimer Center, Madrid, Spain
| | - Laura Lampón-Fernández
- UETeM-Molecular Pathology Group. Department of Psychiatry, Radiology, Public Health, Nursing and Medicine, IDIS-CIMUS, University of Santiago de Compostela, Spain
| | - Antía Fernández-Pombo
- UETeM-Molecular Pathology Group. Department of Psychiatry, Radiology, Public Health, Nursing and Medicine, IDIS-CIMUS, University of Santiago de Compostela, Spain; Division of Endocrinology and Nutrition, University Clinical Hospital of Santiago de Compostela, Spain
| | - Everardo Josué Díaz-López
- UETeM-Molecular Pathology Group. Department of Psychiatry, Radiology, Public Health, Nursing and Medicine, IDIS-CIMUS, University of Santiago de Compostela, Spain; Division of Endocrinology and Nutrition, University Clinical Hospital of Santiago de Compostela, Spain
| | - Teresa Prado-Moraña
- UETeM-Molecular Pathology Group. Department of Psychiatry, Radiology, Public Health, Nursing and Medicine, IDIS-CIMUS, University of Santiago de Compostela, Spain; Division of Endocrinology and Nutrition, University Clinical Hospital of Santiago de Compostela, Spain
| | - Beatriz San Millán
- Grupo de Enfermedades Raras y Medicina Pediátrica, Instituto de Investigación Sanitaria Galicia Sur (IISGS), Vigo, Spain; Pathology Department, Alvaro Cunqueiro Hospital, Vigo, Spain
| | - David Araújo-Vilar
- UETeM-Molecular Pathology Group. Department of Psychiatry, Radiology, Public Health, Nursing and Medicine, IDIS-CIMUS, University of Santiago de Compostela, Spain; Division of Endocrinology and Nutrition, University Clinical Hospital of Santiago de Compostela, Spain.
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Celia's Encephalopathy ( BSCL2-Gene-Related): Current Understanding. J Clin Med 2021; 10:jcm10071435. [PMID: 33916074 PMCID: PMC8037292 DOI: 10.3390/jcm10071435] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/18/2021] [Accepted: 03/27/2021] [Indexed: 12/15/2022] Open
Abstract
Seipin, encoded by the BSCL2 gene, is a protein that in humans is expressed mainly in the central nervous system. Uniquely, certain variants in BSCL2 can cause both generalized congenital lipodystrophy type 2, upper and/or lower motor neuron diseases, or progressive encephalopathy, with a poor prognosis during childhood. The latter, Celia's encephalopathy, which may or may not be associated with generalized lipodystrophy, is caused by the c.985C >T variant. This cytosine to thymine transition creates a cryptic splicing zone that leads to intronization of exon 7, resulting in an aberrant form of seipin, Celia seipin. It has been proposed that the accumulation of this protein, both in the endoplasmic reticulum and in the nucleus of neurons, might be the pathogenetic mechanism of this neurodegenerative condition. In recent years, other variants in BSCL2 associated with generalized lipodystrophy and progressive epileptic encephalopathy have been reported. Interestingly, most of these variants could also lead to the loss of exon 7. In this review, we analyzed the molecular bases of Celia's encephalopathy and its pathogenic mechanisms, the clinical features of the different variants, and a therapeutic approach in order to slow down the progression of this fatal neurological disorder.
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Pedicelli S, de Palma L, Pelosini C, Cappa M. Metreleptin for the treatment of progressive encephalopathy with/without lipodystrophy (PELD) in a child with progressive myoclonic epilepsy: a case report. Ital J Pediatr 2020; 46:158. [PMID: 33099310 PMCID: PMC7585287 DOI: 10.1186/s13052-020-00916-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 10/05/2020] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND A number of genetic syndromes associated with variants in the BSCL2/seipin gene have been identified. Variants that cause skipping of exon 7 are associated with progressive encephalopathy with/without lipodystrophy (PELD), which is characterized by the development of progressive myoclonic epilepsy at a young age, severe progressive neurological impairment, and early death, often in childhood. Because the genetic basis of PELD is similar to that of congenital lipodystrophy type 2, we hypothesized that a patient with PELD may respond to treatments approved for other congenital lipodystrophic syndromes. CASE PRESENTATION We describe a 5-year-old boy with an extremely rare phenotype involving severe progressive myoclonic epilepsy who received metreleptin (a recombinant analogue of leptin) to control metabolic abnormalities. At the age of two, he had no subcutaneous adipose tissue, with hypertriglyceridemia, hypertransaminasemia and hepatic steatosis. He also had a moderate psychomotor delay and generalized tonic seizures. At 4 years, he had insulin resistance, hypercholesterolemia, hypertriglyceridemia, mild hepatosplenomegaly and mild hepatic steatosis; he began a hypolipidemic diet. Severe psychomotor delay and myoclonic/myoclonic atonic seizures with absences was evident. At 5 years of age, metreleptin 0.06 mg/kg/day was initiated; after 2 months, the patient's lipid profile improved and insulin resistance resolved. After 1 year of treatment, hepatic steatosis improved and abdominal ultrasound showed only mild hepatomegaly. Seizure frequency decreased but was not eliminated during metreleptin therapy. CONCLUSIONS Metreleptin may be used to control metabolic disturbances and may lead to better seizure control in children with PELD.
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Affiliation(s)
| | - Luca de Palma
- Rare and Complex Epilepsy, Department of Neuroscience, Bambino Gesù Children Hospital, Rome, Italy
| | - Caterina Pelosini
- Chemistry and Endocrinology Laboratory, University Hospital of Pisa, Pisa, Italy
| | - Marco Cappa
- Unit of Endocrinology, Bambino Gesù Children's Hospital, Rome, Italy
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Sánchez-Iglesias S, Fernández-Pombo A, Araújo-Vilar D. Focus on progressive myoclonic epilepsy in Berardinelli-Seip syndrome. Neurol Sci 2020; 42:1597-1598. [PMID: 33089476 DOI: 10.1007/s10072-020-04780-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/26/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Sofía Sánchez-Iglesias
- UETeM, CIMUS-IDIS, School of Medicine, University of Santiago de Compostela, Avda Barcelona s/n, 15782, Santiago de Compostela, Spain
| | - Antía Fernández-Pombo
- UETeM, CIMUS-IDIS, School of Medicine, University of Santiago de Compostela, Avda Barcelona s/n, 15782, Santiago de Compostela, Spain
| | - David Araújo-Vilar
- UETeM, CIMUS-IDIS, School of Medicine, University of Santiago de Compostela, Avda Barcelona s/n, 15782, Santiago de Compostela, Spain.
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Fernández-Marmiesse A, Sánchez-Iglesias S, Darling A, O'Callaghan MM, Tonda R, Jou C, Araújo-Vilar D. A de novo heterozygous missense BSCL2 variant in 2 siblings with intractable developmental and epileptic encephalopathy. Seizure 2019; 71:161-165. [DOI: 10.1016/j.seizure.2019.07.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/17/2019] [Accepted: 07/24/2019] [Indexed: 12/11/2022] Open
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Celia's encephalopathy and c.974dupG in BSCL2 gene: a hidden change in a known variant. Neurogenetics 2019; 20:73-82. [PMID: 30903322 DOI: 10.1007/s10048-019-00574-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 03/17/2019] [Indexed: 12/11/2022]
Abstract
Celia's encephalopathy (progressive encephalopathy with/without lipodystrophy (PELD)) is a childhood neurodegenerative disorder with a fatal prognosis before the age of 10, due to the variant c.985C>T in the BSCL2 gene that causes a cryptic splicing site leading to skipping of exon 7. For years, different authors have reported cases of congenital generalized lipodystrophy due to the variant c.974dupG in BSCL2 associated with neurological manifestations of variable severity, although some of them clearly superimposable to PELD. To identify the molecular mechanisms responsible for these neurological alterations in two patients with c.974dupG. Clinical characterization, biochemistry, and neuroimaging studies of two girls carrying this variant. In silico analysis, PCR amplification, and BSCL2 cDNA sequencing. BSCL2-201 transcript expression, which lacks exon 7, by qPCR in fibroblasts from the index case, from a healthy child as a control and from two patients with PELD, and in leukocytes from the index case and her parents. One with a severe encephalopathy including a picture of intellectual deficiency, severe language impairment, myoclonic epilepsy, and lipodystrophy as described in PELD, dying at 9 years and 9 months of age. The other 2-year-old patient showed incipient signs of neurological involvement. In silico and cDNA sequencing studies showed that variant c.974dupG gives rise to skipping of exon 7. The expression of BSCL2-201 in fibroblasts was significantly higher in the index case than in the healthy child, although less than in the case with homozygous PELD due to c.985C>T variant. The expression of this transcript was approximately half in the healthy carrier parents of this patient. The c.974dupG variant leads to the skipping of exon 7 of the BSCL2 gene and is responsible for a variant of Celia's encephalopathy, with variable phenotypic expression.
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Poisson A, Chatron N, Labalme A, Till M, Broussolle E, Sanlaville D, Demily C, Lesca G. Regressive Autism Spectrum Disorder Expands the Phenotype of BSCL2/Seipin-Associated Neurodegeneration. Biol Psychiatry 2019; 85:e17-e19. [PMID: 30150100 DOI: 10.1016/j.biopsych.2018.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 05/04/2018] [Accepted: 05/04/2018] [Indexed: 11/29/2022]
Affiliation(s)
- Alice Poisson
- GénoPsy, Reference Center for Diagnosis and Management of Genetic Psychiatric Disorders, Centre Hospitalier le Vinatier and EDR-Psy Team (Centre National de la Recherche Scientifique & Lyon 1 Claude Bernard University), Lyon, France.
| | - Nicolas Chatron
- GENDEV, Centre de Recherche en Neurosciences de Lyon, UMR 529, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale U1028, Université Claude Bernard Lyon 1, Lyon, France; HCL, Department of Genetics, Reference Center for Developmental Anomalies and Malformation Syndromes, Oullins, France
| | - Audrey Labalme
- GENDEV, Centre de Recherche en Neurosciences de Lyon, UMR 529, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale U1028, Université Claude Bernard Lyon 1, Lyon, France; HCL, Department of Genetics, Reference Center for Developmental Anomalies and Malformation Syndromes, Oullins, France
| | - Marianne Till
- GENDEV, Centre de Recherche en Neurosciences de Lyon, UMR 529, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale U1028, Université Claude Bernard Lyon 1, Lyon, France; HCL, Department of Genetics, Reference Center for Developmental Anomalies and Malformation Syndromes, Oullins, France
| | - Emmanuel Broussolle
- UMR 5229, Centre National de la Recherche Scientifique, Institut des Sciences Cognitives Marc Jeannerod, Université de Lyon, Oullins, France; Service de Neurologie C, Hôpital Neurologique Pierre Wertheimer, Hospices Civils de Lyon, Bron; and the Faculté de Médecine Lyon Sud Charles Mérieux, Université de Lyon, Oullins, France
| | - Damien Sanlaville
- GENDEV, Centre de Recherche en Neurosciences de Lyon, UMR 529, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale U1028, Université Claude Bernard Lyon 1, Lyon, France; HCL, Department of Genetics, Reference Center for Developmental Anomalies and Malformation Syndromes, Oullins, France
| | - Caroline Demily
- GénoPsy, Reference Center for Diagnosis and Management of Genetic Psychiatric Disorders, Centre Hospitalier le Vinatier and EDR-Psy Team (Centre National de la Recherche Scientifique & Lyon 1 Claude Bernard University), Lyon, France
| | - Gaetan Lesca
- GENDEV, Centre de Recherche en Neurosciences de Lyon, UMR 529, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale U1028, Université Claude Bernard Lyon 1, Lyon, France; HCL, Department of Genetics, Reference Center for Developmental Anomalies and Malformation Syndromes, Oullins, France
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Sánchez-Iglesias S, Fernández-Liste A, Guillín-Amarelle C, Rábano A, Rodriguez-Cañete L, González-Méndez B, Fernández-Pombo A, Senra A, Araújo-Vilar D. Does Seipin Play a Role in Oxidative Stress Protection and Peroxisome Biogenesis? New Insights from Human Brain Autopsies. Neuroscience 2018; 396:119-137. [PMID: 30447390 DOI: 10.1016/j.neuroscience.2018.11.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 11/02/2018] [Accepted: 11/03/2018] [Indexed: 12/19/2022]
Abstract
Seipin is a widely expressed protein but with highest levels found in the brain and testes. Seipin function is not yet completely understood, therefore the aim of this study was to evaluate the expression of BSCL2 transcripts in the central nervous system (CNS) of humans and investigate the effect of their overexpression on a neuron model and their relationship with oxidative stress protection, as well as shed light on the pathogenic mechanisms of Celia's Encephalopathy. We analyzed the expression of BSCL2 transcripts using real-time RT-PCR in samples across the brain regions of subjects who underwent necropsy and from a case with Celia's Encephalopathy. The transcript encoding the long seipin isoform (BSCL2-203, 462 aa) is expressed primarily in the brain and its expression is inversely correlated with age in the temporal lobe, amygdala, and hypothalamus. Strong positive correlations were found between BSCL2 expression and some genes encoding protective enzymes against oxidative stress including SOD1 and SOD2, as well as peroxisome proliferator-activated receptor gamma (PPARG) in the amygdala. These results were experimentally corroborated by overexpressing BSCL2 transcripts in SH-SY5Y cells with lentiviral transduction and assessing their effects on neuron differentiated cells. Confocal microscopy studies showed that both seipin and PEX16 are closely expressed in the hypothalami of healthy human brains, and PEX16 was absent in the same region of the PELD case. We hypothesize that seipin has specific CNS functions and may play a role in peroxisome biogenesis.
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Affiliation(s)
- Sofía Sánchez-Iglesias
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Psychiatry, Radiology, Public Health, Nursing and Medicine (Medicine Area), Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Alberto Fernández-Liste
- Instituto de Medicina Legal de Galicia (IMELGA), 15707 Santiago de Compostela, A Coruña, Spain
| | - Cristina Guillín-Amarelle
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Psychiatry, Radiology, Public Health, Nursing and Medicine (Medicine Area), Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Alberto Rábano
- Neuropathology Department and Tissue Bank, Fundación CIEN, 28031 Madrid, Spain
| | - Leticia Rodriguez-Cañete
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Psychiatry, Radiology, Public Health, Nursing and Medicine (Medicine Area), Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Blanca González-Méndez
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Psychiatry, Radiology, Public Health, Nursing and Medicine (Medicine Area), Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Antía Fernández-Pombo
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Psychiatry, Radiology, Public Health, Nursing and Medicine (Medicine Area), Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Ana Senra
- Department of Physiology, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - David Araújo-Vilar
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Psychiatry, Radiology, Public Health, Nursing and Medicine (Medicine Area), Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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Exploring Seipin: From Biochemistry to Bioinformatics Predictions. Int J Cell Biol 2018; 2018:5207608. [PMID: 30402103 PMCID: PMC6192094 DOI: 10.1155/2018/5207608] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 08/12/2018] [Accepted: 09/03/2018] [Indexed: 01/30/2023] Open
Abstract
Seipin is a nonenzymatic protein encoded by the BSCL2 gene. It is involved in lipodystrophy and seipinopathy diseases. Named in 2001, all seipin functions are still far from being understood. Therefore, we reviewed much of the research, trying to find a pattern that could explain commonly observed features of seipin expression disorders. Likewise, this review shows how this protein seems to have tissue-specific functions. In an integrative view, we conclude by proposing a theoretical model to explain how seipin might be involved in the triacylglycerol synthesis pathway.
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Araújo-Vilar D, Domingo-Jiménez R, Ruibal Á, Aguiar P, Ibáñez-Micó S, Garrido-Pumar M, Martínez-Olmos MÁ, López-Soler C, Guillín-Amarelle C, González-Rodríguez M, Rodríguez-Núñez A, Álvarez-Escudero J, Liñares-Paz M, González-Méndez B, Rodríguez-García S, Sánchez-Iglesias S. Association of metreleptin treatment and dietary intervention with neurological outcomes in Celia's encephalopathy. Eur J Hum Genet 2018; 26:396-406. [PMID: 29367704 DOI: 10.1038/s41431-017-0052-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 11/03/2017] [Accepted: 11/13/2017] [Indexed: 12/18/2022] Open
Abstract
Celia's encephalopathy (progressive encephalopathy with/without lipodystrophy, PELD) is a recessive neurodegenerative disease that is fatal in childhood. It is caused by a c.985C>T variant in the BSCL2/seipin gene that results in an aberrant seipin protein. We evaluated neurological development before and during treatment with human recombinant leptin (metreleptin) plus a dietary intervention rich in polyunsaturated fatty acids (PUFA) in the only living patient. A 7 years and 10 months old girl affected by PELD was treated at age 3 years with metreleptin, adding at age 6 omega-3 fatty acid supplementation. Her mental age was evaluated using the Battelle Developmental Inventory Screening Test (BDI), and brain PET/MRI was performed before treatment and at age 5, 6.5, and 7.5 years. At age 7.5 years, the girl remains alive and leads a normal life for her mental age of 30 months, which increased by 4 months over the last 18 months according to BDI. PET images showed improved glucose uptake in the thalami, cerebellum, and brainstem. This patient showed a clear slowdown in neurological regression during leptin replacement plus a high PUFA diet. The aberrant BSCL2 transcript was overexpressed in SH-SY5Y cells and was treated with docosahexaenoic acid (200 µM) plus leptin (0.001 mg/ml) for 24 h. The relative expression of aberrant BSCL2 transcript was measured by qPCR. In vitro studies showed significant reduction (32%) in aberrant transcript expression. This therapeutic approach should be further studied in this devastating disease.
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Affiliation(s)
- David Araújo-Vilar
- Thyroid and Metabolic Diseases Unit, Biomedical Research Institute (CIMUS)-IDIS, School of Medicine, Universidade de Santiago de Compostela, Santiago de Compostela, Spain. .,Division of Endocrinology and Nutrition, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain.
| | - Rosario Domingo-Jiménez
- Section of Neuropediatrics, Division of Pediatrics, Hospital Clínico Universitario Virgen de la Arrixaca-IMIB Arrixaca, Murcia, Spain
| | - Álvaro Ruibal
- Division of Nuclear Medicine, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain.,Fundación Tejerina, Madrid, Spain.,Molecular Imaging and Medical Physics, Universidade de Santiago de Compostela. IDIS, Santiago de Compostela, Spain
| | - Pablo Aguiar
- Division of Nuclear Medicine, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain.,Molecular Imaging and Medical Physics, Universidade de Santiago de Compostela. IDIS, Santiago de Compostela, Spain
| | - Salvador Ibáñez-Micó
- Section of Neuropediatrics, Division of Pediatrics, Hospital Clínico Universitario Virgen de la Arrixaca-IMIB Arrixaca, Murcia, Spain
| | - Miguel Garrido-Pumar
- Division of Nuclear Medicine, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain
| | - Miguel Ángel Martínez-Olmos
- Division of Endocrinology and Nutrition, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain
| | | | - Cristina Guillín-Amarelle
- Thyroid and Metabolic Diseases Unit, Biomedical Research Institute (CIMUS)-IDIS, School of Medicine, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.,Division of Endocrinology and Nutrition, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain
| | - María González-Rodríguez
- Division of Endocrinology and Nutrition, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain
| | - Antonio Rodríguez-Núñez
- Pediatric Intensive Care Unit, Pediatric Area, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain
| | - Julián Álvarez-Escudero
- Anesthesia and Reanimation Department, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain
| | - Mercedes Liñares-Paz
- Department of Radiology, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain
| | - Blanca González-Méndez
- Thyroid and Metabolic Diseases Unit, Biomedical Research Institute (CIMUS)-IDIS, School of Medicine, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Silvia Rodríguez-García
- Thyroid and Metabolic Diseases Unit, Biomedical Research Institute (CIMUS)-IDIS, School of Medicine, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Sofía Sánchez-Iglesias
- Thyroid and Metabolic Diseases Unit, Biomedical Research Institute (CIMUS)-IDIS, School of Medicine, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
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Zhang Y, Long H, Zhou F, Zhu W, Ruan J, Zhao Y, Lu Y. Echinacoside's nigrostriatal dopaminergic protection against 6-OHDA-Induced endoplasmic reticulum stress through reducing the accumulation of Seipin. J Cell Mol Med 2017; 21:3761-3775. [PMID: 28767194 PMCID: PMC5706584 DOI: 10.1111/jcmm.13285] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 05/19/2017] [Indexed: 12/21/2022] Open
Abstract
Parkinson's disease (PD) is one of the most common neurodegenerative diseases. Recent epidemiological studies suggest that echinacoside (ECH), a phenylethanoid glycoside found in Cistanche deserticola, has a protective effect against the development of PD. However, the detailed mechanisms of how ECH suppresses neuronal death have not been fully elucidated. In this study, we confirmed that ECH protects nigrostriatal neurons against 6‐hydroxydopamine (6‐OHDA)‐induced endoplasmic reticulum stress (ERS) in vivo and in vitro. ECH rescued cell viability in damaged cells and decreased 6‐OHDA‐induced reactive oxygen species accumulation in vitro. It also rescued tyrosine hydroxylase and dopamine transporter expression in the striatum, and decreased α‐synuclein aggregation following 6‐OHDA treatment in vivo. The validated mechanism of ECH activity was the reduction in the 6‐OHDA‐induced accumulation of seipin (Berardinelli–Seip congenital lipodystrophy 2). Seipin has been shown to be a key molecule related to motor neuron disease and was tightly associated with ERS in a series of in vivo studies. ECH attenuated seipinopathy by promoting seipin degradation via ubiquitination. ERS was relieved by ECH through the Grp94/Bip‐ATF4‐CHOP signal pathway.
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Affiliation(s)
- Yajie Zhang
- Central Laboratory, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.,Clinical Biobank of Nanjing Hospital of Chinese Medicine, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Hongyan Long
- Central Laboratory, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.,Clinical Biobank of Nanjing Hospital of Chinese Medicine, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.,Department of Pediatrics, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Fuqiong Zhou
- Institute of T.C.M., The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Weina Zhu
- Central Laboratory, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.,Clinical Biobank of Nanjing Hospital of Chinese Medicine, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Jie Ruan
- Central Laboratory, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.,Clinical Biobank of Nanjing Hospital of Chinese Medicine, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Yang Zhao
- Department of Neurology, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Yan Lu
- Department of Neurology, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
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12
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Opri R, Fabrizi GM, Cantalupo G, Ferrarini M, Simonati A, Dalla Bernardina B, Darra F. Progressive Myoclonus Epilepsy in Congenital Generalized Lipodystrophy type 2: Report of 3 cases and literature review. Seizure 2016; 42:1-6. [PMID: 27632409 DOI: 10.1016/j.seizure.2016.08.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 08/24/2016] [Accepted: 08/27/2016] [Indexed: 11/30/2022] Open
Abstract
PURPOSE A small case series with a neurodegenerative disorder involving central nervous system and related to Seipin mutations was recently reported. Herein we describe clinical and EEG features of three patients presenting with Progressive Myoclonus Epilepsy (PME) and Congenital Generalized Lipodystrophy type 2 (CGL2) related to novel Seipin mutations. METHODS The EEG-clinical picture was evaluated at epilepsy onset and in the follow-up period. The molecular analysis of BSCL2, Laforin and Malin genes was performed to patients and/or their parents by Denaturing High Performance Liquid Chromatography and automated nucleotide sequencing. Skin specimens collected from a patient were processed for histochemical and ultrastructural analysis. RESULTS The CGL2-PME syndrome co-segregated with two different BSCL2 genotypes: the homozygosity for c.782_783dupG involving exon 8 (two cases), or the compound heterozygosity for c.782_783dupG/c.828_829delAA (one case). Periodic-Acid Schiff positive osmiophilic material in the cytoplasm of fibrocytes and eccrine-gland cells were found in skin specimens. The lack of Lafora's bodies in skin specimens and the molecular analysis excluding mutations in Laforin and Malin genes ruled out Lafora disease. CONCLUSION The spectrum of CGL2 associated to BSCL2 gene mutations may include PMEs. Selected mutations in BSCL2 gene seem to be related to PMEs in patients with CGL2 phenotype.
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Affiliation(s)
- Roberta Opri
- University Hospital of Verona, Department of Surgical Sciences, Gynecology and Pediatrics, Section of Child Neuropsychiatry, piazzale L.A. Scuro 10, 37134 Verona, Italy.
| | - Gian Maria Fabrizi
- University Hospital of Verona, Department of Neurosciences, Biomedicine and Movement Sciences, Section of Neuropathology, piazzale L.A. Scuro 10, 37134 Verona, Italy
| | - Gaetano Cantalupo
- University Hospital of Verona, Department of Surgical Sciences, Gynecology and Pediatrics, Section of Child Neuropsychiatry, piazzale L.A. Scuro 10, 37134 Verona, Italy
| | - Moreno Ferrarini
- University Hospital of Verona, Department of Neurosciences, Biomedicine and Movement Sciences, Section of Neuropathology, piazzale L.A. Scuro 10, 37134 Verona, Italy
| | - Alessandro Simonati
- University Hospital of Verona, Department of Neurosciences, Biomedicine and Movement Sciences, Section of Neurology, Child Neurology and Psychiatry, piazzale L.A. Scuro 10, 37134 Verona, Italy
| | - Bernardo Dalla Bernardina
- University Hospital of Verona, Department of Surgical Sciences, Gynecology and Pediatrics, Section of Child Neuropsychiatry, piazzale L.A. Scuro 10, 37134 Verona, Italy
| | - Francesca Darra
- University Hospital of Verona, Department of Surgical Sciences, Gynecology and Pediatrics, Section of Child Neuropsychiatry, piazzale L.A. Scuro 10, 37134 Verona, Italy
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13
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Sánchez-Iglesias S, Unruh-Pinheiro A, Guillín-Amarelle C, González-Méndez B, Ruiz-Riquelme A, Rodríguez-Cañete BL, Rodríguez-García S, Guillén-Navarro E, Domingo-Jiménez R, Araújo-Vilar D. Skipped BSCL2 Transcript in Celia's Encephalopathy (PELD): New Insights on Fatty Acids Involvement, Senescence and Adipogenesis. PLoS One 2016; 11:e0158874. [PMID: 27391332 PMCID: PMC4938205 DOI: 10.1371/journal.pone.0158874] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 06/23/2016] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE PELD (Progressive Encephalopathy with or without Lipodystrophy or Celia's Encephalopathy) is a fatal and rare neurodegenerative syndrome associated with the BSCL2 mutation c.985C>T, that results in an aberrant transcript without the exon 7 (Celia seipin). The aim of this study was to evaluate both the process of cellular senescence and the effect of unsaturated fatty acids on preadipocytes from a homozygous c.985C>T patient. Also, the role of aberrant seipin isoform on adipogenesis was studied in adipose-derived human mesenchymal stem cells. MATERIAL AND METHODS Cellular senescence was evaluated using β-galactosidase staining of preadipocytes obtained from a homozygous c.985C>T patient. Moreover, these cells were cultured during 24 hours with Intralipid, a soybean oil-based commercial lipid emulsion. The expression of the different BSCL2 transcripts was measured by qPCR. Adipose-derived human mesenchymal stem cells were differentiated to a fat lineage using StemPRO adipogenesis kit, and the expression of BSCL2 transcripts and several adipogenesis-related genes was measured by qPCR. RESULTS the treatment of preadipocytes with unsaturated fatty acids significantly reduced the expression of the BSCL2 transcript without exon 7 by 34 to 63%. On the other hand, at least in preadipocytes, this mutation does not disturb cellular senescence rate. Finally, during adipocyte differentiation of adipose-derived human mesenchymal stem cells, the expression of adipogenic genes (PPARG, LPIN1, and LPL) increased significantly over 14 days, and noteworthy is that the BSCL2 transcript without exon 7 was differentially expressed by 332 to 723% when compared to day 0, suggesting an underlying role in adipogenesis. CONCLUSIONS our results suggest that Celia seipin is probably playing an underestimated role in adipocyte maturation, but not in senescence, and its expression can be modified by exogenous factors as fatty acids.
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Affiliation(s)
- Sofía Sánchez-Iglesias
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Medicine, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Alexander Unruh-Pinheiro
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Medicine, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Cristina Guillín-Amarelle
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Medicine, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Blanca González-Méndez
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Medicine, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Alejandro Ruiz-Riquelme
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Medicine, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Blanca Leticia Rodríguez-Cañete
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Medicine, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Silvia Rodríguez-García
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Medicine, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Encarnación Guillén-Navarro
- Unit of Medical Genetics and Dysmorphology, Division of Pediatrics, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Rosario Domingo-Jiménez
- Section of Neuropediatrics, Division of Pediatrics, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - David Araújo-Vilar
- Thyroid and Metabolic Diseases Unit (U.E.T.eM.), Department of Medicine, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, Santiago de Compostela, Spain
- * E-mail:
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