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Manoli I, Sysol JR, Head PE, Epping MW, Gavrilova O, Crocker MK, Sloan JL, Koutsoukos SA, Wang C, Ktena YP, Mendelson S, Pass AR, Zerfas PM, Hoffmann V, Vernon HJ, Fletcher LA, Reynolds JC, Tsokos MG, Stratakis CA, Voss SD, Chen KY, Brown RJ, Hamosh A, Berry GT, Chen XS, Yanovski JA, Venditti CP. Lipodystrophy in methylmalonic acidemia associated with elevated FGF21 and abnormal methylmalonylation. JCI Insight 2024; 9:e174097. [PMID: 38271099 DOI: 10.1172/jci.insight.174097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 01/09/2024] [Indexed: 01/27/2024] Open
Abstract
A distinct adipose tissue distribution pattern was observed in patients with methylmalonyl-CoA mutase deficiency, an inborn error of branched-chain amino acid (BCAA) metabolism, characterized by centripetal obesity with proximal upper and lower extremity fat deposition and paucity of visceral fat, that resembles familial multiple lipomatosis syndrome. To explore brown and white fat physiology in methylmalonic acidemia (MMA), body composition, adipokines, and inflammatory markers were assessed in 46 patients with MMA and 99 matched controls. Fibroblast growth factor 21 levels were associated with acyl-CoA accretion, aberrant methylmalonylation in adipose tissue, and an attenuated inflammatory cytokine profile. In parallel, brown and white fat were examined in a liver-specific transgenic MMA mouse model (Mmut-/- TgINS-Alb-Mmut). The MMA mice exhibited abnormal nonshivering thermogenesis with whitened brown fat and had an ineffective transcriptional response to cold stress. Treatment of the MMA mice with bezafibrates led to clinical improvement with beiging of subcutaneous fat depots, which resembled the distribution seen in the patients. These studies defined what we believe to be a novel lipodystrophy phenotype in patients with defects in the terminal steps of BCAA oxidation and demonstrated that beiging of subcutaneous adipose tissue in MMA could readily be induced with small molecules.
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Affiliation(s)
- Irini Manoli
- Metabolic Medicine Branch, National Human Genome Research Institute
| | - Justin R Sysol
- Metabolic Medicine Branch, National Human Genome Research Institute
| | | | | | - Oksana Gavrilova
- Mouse Metabolism Core, National Institute of Diabetes and Digestive and Kidney Diseases
| | - Melissa K Crocker
- Section on Growth and Obesity, Eunice Kennedy Shriver National Institute of Child Health and Human Development; and
| | - Jennifer L Sloan
- Metabolic Medicine Branch, National Human Genome Research Institute
| | | | - Cindy Wang
- Metabolic Medicine Branch, National Human Genome Research Institute
| | - Yiouli P Ktena
- Metabolic Medicine Branch, National Human Genome Research Institute
| | - Sophia Mendelson
- Section on Growth and Obesity, Eunice Kennedy Shriver National Institute of Child Health and Human Development; and
| | - Alexandra R Pass
- Metabolic Medicine Branch, National Human Genome Research Institute
| | - Patricia M Zerfas
- Office of Research Services, Division of Veterinary Resources, NIH, Bethesda, Maryland, USA
| | - Victoria Hoffmann
- Office of Research Services, Division of Veterinary Resources, NIH, Bethesda, Maryland, USA
| | - Hilary J Vernon
- Department of Genetic Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Laura A Fletcher
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases
| | | | - Maria G Tsokos
- Ultrastructural Pathology Section, Center for Cancer Research; and
| | - Constantine A Stratakis
- Section on Endocrinology & Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, Maryland, USA
| | - Stephan D Voss
- Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Kong Y Chen
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases
| | - Rebecca J Brown
- Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases
| | - Ada Hamosh
- Department of Genetic Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Gerard T Berry
- Division of Genetics and Genomics, The Manton Center for Orphan Disease Research, Boston Children's Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Xiaoyuan Shawn Chen
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, NIH, Bethesda, Maryland, USA
| | - Jack A Yanovski
- Section on Growth and Obesity, Eunice Kennedy Shriver National Institute of Child Health and Human Development; and
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Wiedemann A, Oussalah A, Guéant Rodriguez RM, Jeannesson E, Mertens M, Rotaru I, Alberto JM, Baspinar O, Rashka C, Hassan Z, Siblini Y, Matmat K, Jeandel M, Chery C, Robert A, Chevreux G, Lignières L, Camadro JM, Feillet F, Coelho D, Guéant JL. Multiomic analysis in fibroblasts of patients with inborn errors of cobalamin metabolism reveals concordance with clinical and metabolic variability. EBioMedicine 2024; 99:104911. [PMID: 38168585 PMCID: PMC10794925 DOI: 10.1016/j.ebiom.2023.104911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 11/28/2023] [Accepted: 11/28/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND The high variability in clinical and metabolic presentations of inborn errors of cobalamin (cbl) metabolism (IECM), such as the cblC/epicblC types with combined deficits in methylmalonyl-coA mutase (MUT) and methionine synthase (MS), are not well understood. They could be explained by the impaired expression/activity of enzymes from other metabolic pathways. METHODS We performed metabolomic, genomic, proteomic, and post-translational modification (PTM) analyses in fibroblasts from three cblC cases and one epi-cblC case compared with three cblG cases with specific MS deficits and control fibroblasts. FINDINGS CblC patients had metabolic profilings consistent with altered urea cycle, glycine, and energy mitochondrial metabolism. Metabolomic analysis showed partial disruption and increased glutamate/ketoglutarate anaplerotic pathway of the tricarboxylic acid cycle (TCA), in patient fibroblasts. RNA-seq analysis showed decreased expression of MT-TT (mitochondrial tRNA threonine), MT-TP (mitochondrial tRNA proline), OXCT1 (succinyl CoA:3-oxoacid CoA transferase deficiency), and MT-CO1 (cytochrome C oxidase subunit 1). Proteomic changes were observed for key mitochondrial enzymes, including NADH:ubiquinone oxidoreductase subunit A8 (NDUFA8), carnitine palmitoyltransferase 2 (CPT2), and ubiquinol-cytochrome C reductase, complex III subunit X (UQCR10). Propionaldehyde addition in ornithine aminotransferase was the predominant PTM in cblC cells and could be related with the dramatic cellular increase in propionate and methylglyoxalate. It is consistent with the decreased concentration of ornithine reported in 3 cblC cases. Whether the changes detected after multi-omic analyses underlies clinical features in cblC and cblG types of IECM, such as peripheral and central neuropathy, cardiomyopathy, pulmonary hypertension, development delay, remains to be investigated. INTERPRETATION The omics-related effects of IECM on other enzymes and metabolic pathways are consistent with the diversity and variability of their age-related metabolic and clinical manifestations. PTMs are expected to produce cumulative effects, which could explain the influence of age on neurological manifestations. FUNDING French Agence Nationale de la Recherche (Projects PREDICTS and EpiGONE) and Inserm.
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Affiliation(s)
- Arnaud Wiedemann
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France; National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, Nancy, F-54000, France
| | - Abderrahim Oussalah
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France; National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, Nancy, F-54000, France
| | - Rosa-Maria Guéant Rodriguez
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France; National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, Nancy, F-54000, France
| | - Elise Jeannesson
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France; National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, Nancy, F-54000, France
| | - Marc Mertens
- National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, Nancy, F-54000, France
| | - Irina Rotaru
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France; National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, Nancy, F-54000, France
| | - Jean-Marc Alberto
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France
| | - Okan Baspinar
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France
| | - Charif Rashka
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France
| | - Ziad Hassan
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France
| | - Youssef Siblini
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France
| | - Karim Matmat
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France
| | - Manon Jeandel
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France
| | - Celine Chery
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France
| | - Aurélie Robert
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France
| | - Guillaume Chevreux
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013, Paris, France
| | - Laurent Lignières
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013, Paris, France
| | | | - François Feillet
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France; National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, Nancy, F-54000, France
| | - David Coelho
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France; National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, Nancy, F-54000, France
| | - Jean-Louis Guéant
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, Nancy, F-54000, France; National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, Nancy, F-54000, France.
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Gharibzahedi SMT, Moghadam M, Amft J, Tolun A, Hasabnis G, Altintas Z. Recent Advances in Dietary Sources, Health Benefits, Emerging Encapsulation Methods, Food Fortification, and New Sensor-Based Monitoring of Vitamin B 12: A Critical Review. Molecules 2023; 28:7469. [PMID: 38005191 PMCID: PMC10673454 DOI: 10.3390/molecules28227469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 10/29/2023] [Accepted: 11/02/2023] [Indexed: 11/26/2023] Open
Abstract
In this overview, the latest achievements in dietary origins, absorption mechanism, bioavailability assay, health advantages, cutting-edge encapsulation techniques, fortification approaches, and innovative highly sensitive sensor-based detection methods of vitamin B12 (VB12) were addressed. The cobalt-centered vitamin B is mainly found in animal products, posing challenges for strict vegetarians and vegans. Its bioavailability is highly influenced by intrinsic factor, absorption in the ileum, and liver reabsorption. VB12 mainly contributes to blood cell synthesis, cognitive function, and cardiovascular health, and potentially reduces anemia and optic neuropathy. Microencapsulation techniques improve the stability and controlled release of VB12. Co-microencapsulation of VB12 with other vitamins and bioactive compounds enhances bioavailability and controlled release, providing versatile initiatives for improving bio-functionality. Nanotechnology, including nanovesicles, nanoemulsions, and nanoparticles can enhance the delivery, stability, and bioavailability of VB12 in diverse applications, ranging from antimicrobial agents to skincare and oral insulin delivery. Staple food fortification with encapsulated and free VB12 emerges as a prominent strategy to combat deficiency and promote nutritional value. Biosensing technologies, such as electrochemical and optical biosensors, offer rapid, portable, and sensitive VB12 assessment. Carbon dot-based fluorescent nanosensors, nanocluster-based fluorescent probes, and electrochemical sensors show promise for precise detection, especially in pharmaceutical and biomedical applications.
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Affiliation(s)
| | - Maryam Moghadam
- Institute of Human Nutrition and Food Science, Division of Food Technology, Kiel University, 24118 Kiel, Germany
| | - Jonas Amft
- Institute of Human Nutrition and Food Science, Division of Food Technology, Kiel University, 24118 Kiel, Germany
| | - Aysu Tolun
- Institute of Materials Science, Faculty of Engineering, Kiel University, 24143 Kiel, Germany
| | - Gauri Hasabnis
- Institute of Materials Science, Faculty of Engineering, Kiel University, 24143 Kiel, Germany
| | - Zeynep Altintas
- Institute of Materials Science, Faculty of Engineering, Kiel University, 24143 Kiel, Germany
- Kiel Nano, Surface and Interface Science-KiNSIS, Kiel University, 24118 Kiel, Germany
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Matmat K, Conart JB, Graindorge PH, El Kouche S, Hassan Z, Siblini Y, Umoret R, Safar R, Baspinar O, Robert A, Alberto JM, Oussalah A, Coelho D, Guéant JL, Guéant-Rodriguez RM. A transgenic mice model of retinopathy of cblG-type inherited disorder of one-carbon metabolism highlights epigenome-wide alterations related to cone photoreceptor cells development and retinal metabolism. Clin Epigenetics 2023; 15:158. [PMID: 37798757 PMCID: PMC10557304 DOI: 10.1186/s13148-023-01567-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 09/12/2023] [Indexed: 10/07/2023] Open
Abstract
BACKGROUND MTR gene encodes the cytoplasmic enzyme methionine synthase, which plays a pivotal role in the methionine cycle of one-carbon metabolism. This cycle holds a significant importance in generating S-adenosylmethionine (SAM) and S-adenosylhomocysteine (SAH), the respective universal methyl donor and end-product of epigenetic transmethylation reactions. cblG type of inherited disorders of vitamin B12 metabolism due to mutations in MTR gene exhibits a wide spectrum of symptoms, including a retinopathy unresponsive to conventional therapies. METHODS To unveil the underlying epigenetic pathological mechanisms, we conducted a comprehensive study of epigenomic-wide alterations of DNA methylation by NGS of bisulfited retinal DNA in an original murine model with conditional Mtr deletion in retinal tissue. Our focus was on postnatal day 21, a critical developmental juncture for ocular structure refinement and functional maturation. RESULTS We observed delayed eye opening and impaired visual acuity and alterations in the one-carbon metabolomic profile, with a notable dramatic decline in SAM/SAH ratio predicted to impair DNA methylation. This metabolic disruption led to epigenome-wide changes in genes involved in eye development, synaptic plasticity, and retinoid metabolism, including promoter hypermethylation of Rarα, a regulator of Lrat expression. Consistently, we observed a decline in cone photoreceptor cells and reduced expression of Lrat, Rpe65, and Rdh5, three pivotal genes of eye retinoid metabolism. CONCLUSION We introduced an original in vivo model for studying cblG retinopathy, which highlighted the pivotal role of altered DNA methylation in eye development, cone differentiation, and retinoid metabolism. This model can be used for preclinical studies of novel therapeutic targets.
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Affiliation(s)
- Karim Matmat
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
| | - Jean-Baptiste Conart
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
- Department of Ophthalmology, University Regional Hospital Center of Nancy, 54000, Nancy, France
| | - Paul-Henri Graindorge
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
| | - Sandra El Kouche
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
| | - Ziad Hassan
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
| | - Youssef Siblini
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
| | - Rémy Umoret
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
| | - Ramia Safar
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
| | - Okan Baspinar
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
| | - Aurélie Robert
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
| | - Jean-Marc Alberto
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
| | - Abderrahim Oussalah
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
| | - David Coelho
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France
- National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, 54000, Nancy, France
| | - Jean-Louis Guéant
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France.
- National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, 54000, Nancy, France.
- Faculté de Médecine, Bâtiment C 2Ème Étage, 9 Avenue de La Forêt de Haye, 54505, Vandœuvre-lès-Nancy, France.
| | - Rosa-Maria Guéant-Rodriguez
- Inserm UMRS 1256 NGERE - Nutrition, Genetics, and Environmental Risk Exposure, University of Lorraine, 54500, Vandoeuvre-lès-Nancy, France.
- National Center of Inborn Errors of Metabolism, University Regional Hospital Center of Nancy, 54000, Nancy, France.
- Faculté de Médecine, Bâtiment C 2Ème Étage, 9 Avenue de La Forêt de Haye, 54505, Vandœuvre-lès-Nancy, France.
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Yaskolka Meir A, Yun H, Stampfer MJ, Liang L, Hu FB. Nutrition, DNA methylation and obesity across life stages and generations. Epigenomics 2023; 15:991-1015. [PMID: 37933548 DOI: 10.2217/epi-2023-0172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023] Open
Abstract
Obesity is a complex multifactorial condition that often manifests in early life with a lifelong burden on metabolic health. Diet, including pre-pregnancy maternal diet, in utero nutrition and dietary patterns in early and late life, can shape obesity development. Growing evidence suggests that epigenetic modifications, specifically DNA methylation, might mediate or accompany these effects across life stages and generations. By reviewing human observational and intervention studies conducted over the past 10 years, this work provides a comprehensive overview of the evidence linking nutrition to DNA methylation and its association with obesity across different age periods, spanning from preconception to adulthood and identify future research directions in the field.
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Affiliation(s)
- Anat Yaskolka Meir
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Huan Yun
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Meir J Stampfer
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
- Department of Medicine, Channing Division of Network Medicine, Brigham & Women's Hospital & Harvard Medical School, Boston, MA 02115, USA
| | - Liming Liang
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Frank B Hu
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
- Department of Medicine, Channing Division of Network Medicine, Brigham & Women's Hospital & Harvard Medical School, Boston, MA 02115, USA
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Scott J, Amich J. The role of methionine synthases in fungal metabolism and virulence. Essays Biochem 2023; 67:853-863. [PMID: 37449444 DOI: 10.1042/ebc20230007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/20/2023] [Accepted: 06/20/2023] [Indexed: 07/18/2023]
Abstract
Methionine synthases (MetH) catalyse the methylation of homocysteine (Hcy) with 5-methyl-tetrahydrofolate (5, methyl-THF) acting as methyl donor, to form methionine (Met) and tetrahydrofolate (THF). This function is performed by two unrelated classes of enzymes that differ significantly in both their structures and mechanisms of action. The genomes of plants and many fungi exclusively encode cobalamin-independent enzymes (EC.2.1.1.14), while some fungi also possess proteins from the cobalamin-dependent (EC.2.1.1.13) family utilised by humans. Methionine synthase's function connects the methionine and folate cycles, making it a crucial node in primary metabolism, with impacts on important cellular processes such as anabolism, growth and synthesis of proteins, polyamines, nucleotides and lipids. As a result, MetHs are vital for the viability or virulence of numerous prominent human and plant pathogenic fungi and have been proposed as promising broad-spectrum antifungal drug targets. This review provides a summary of the relevance of methionine synthases to fungal metabolism, their potential as antifungal drug targets and insights into the structures of both classes of MetH.
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Affiliation(s)
- Jennifer Scott
- Manchester Fungal Infection Group, Division of Evolution, Infection, and Genomics, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Jorge Amich
- Manchester Fungal Infection Group, Division of Evolution, Infection, and Genomics, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
- Mycology Reference Laboratory (Laboratorio de Referencia e Investigación en Micología [LRIM]), National Centre for Microbiology, Instituto de Salud Carlos III (ISCIII), Majadahonda, Madrid, Spain
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7
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Lucienne M, Gerlini R, Rathkolb B, Calzada-Wack J, Forny P, Wueest S, Kaech A, Traversi F, Forny M, Bürer C, Aguilar-Pimentel A, Irmler M, Beckers J, Sauer S, Kölker S, Dewulf JP, Bommer GT, Hoces D, Gailus-Durner V, Fuchs H, Rozman J, Froese DS, Baumgartner MR, de Angelis MH. Insights into energy balance dysregulation from a mouse model of methylmalonic aciduria. Hum Mol Genet 2023; 32:2717-2734. [PMID: 37369025 PMCID: PMC10460489 DOI: 10.1093/hmg/ddad100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/25/2023] [Accepted: 06/19/2023] [Indexed: 06/29/2023] Open
Abstract
Inherited disorders of mitochondrial metabolism, including isolated methylmalonic aciduria, present unique challenges to energetic homeostasis by disrupting energy-producing pathways. To better understand global responses to energy shortage, we investigated a hemizygous mouse model of methylmalonyl-CoA mutase (Mmut)-type methylmalonic aciduria. We found Mmut mutant mice to have reduced appetite, energy expenditure and body mass compared with littermate controls, along with a relative reduction in lean mass but increase in fat mass. Brown adipose tissue showed a process of whitening, in line with lower body surface temperature and lesser ability to cope with cold challenge. Mutant mice had dysregulated plasma glucose, delayed glucose clearance and a lesser ability to regulate energy sources when switching from the fed to fasted state, while liver investigations indicated metabolite accumulation and altered expression of peroxisome proliferator-activated receptor and Fgf21-controlled pathways. Together, these shed light on the mechanisms and adaptations behind energy imbalance in methylmalonic aciduria and provide insight into metabolic responses to chronic energy shortage, which may have important implications for disease understanding and patient management.
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Affiliation(s)
- Marie Lucienne
- Division of Metabolism and Children’s Research Center, University Children’s Hospital Zurich, University of Zurich, 8032 Zurich, Switzerland
- radiz – Rare Disease Initiative Zurich, Clinical Research Priority Program for Rare Diseases, University of Zurich, Zurich, Switzerland
- Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Raffaele Gerlini
- Institute of Experimental Genetics and German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Birgit Rathkolb
- Institute of Experimental Genetics and German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, Ludwig-Maximilians-University München, Munich, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Julia Calzada-Wack
- Institute of Experimental Genetics and German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Patrick Forny
- Division of Metabolism and Children’s Research Center, University Children’s Hospital Zurich, University of Zurich, 8032 Zurich, Switzerland
| | - Stephan Wueest
- Division of Pediatric Endocrinology and Diabetology and Children’s Research Center, University Children's Hospital, University of Zurich, 8032 Zurich, Switzerland
| | - Andres Kaech
- Center for Microscopy and Image Analysis, University of Zurich, Zurich, Switzerland
| | - Florian Traversi
- Division of Metabolism and Children’s Research Center, University Children’s Hospital Zurich, University of Zurich, 8032 Zurich, Switzerland
| | - Merima Forny
- Division of Metabolism and Children’s Research Center, University Children’s Hospital Zurich, University of Zurich, 8032 Zurich, Switzerland
| | - Céline Bürer
- Division of Metabolism and Children’s Research Center, University Children’s Hospital Zurich, University of Zurich, 8032 Zurich, Switzerland
| | - Antonio Aguilar-Pimentel
- Institute of Experimental Genetics and German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Martin Irmler
- Institute of Experimental Genetics and German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Johannes Beckers
- Institute of Experimental Genetics and German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Sven Sauer
- Division of Pediatric Neurology and Metabolic Medicine, Center for Pediatric and Adolescent Medicine, University Hospital, Heidelberg, Germany
| | - Stefan Kölker
- Division of Pediatric Neurology and Metabolic Medicine, Center for Pediatric and Adolescent Medicine, University Hospital, Heidelberg, Germany
| | - Joseph P Dewulf
- Department of Biochemistry, de Duve Institute, UCLouvain, Brussels, Belgium
- Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Brussels, Belgium
- Department of Laboratory Medicine, Cliniques universitaires Saint-Luc, UCLouvain, Brussels, Belgium
| | - Guido T Bommer
- Department of Biochemistry, de Duve Institute, UCLouvain, Brussels, Belgium
- Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Brussels, Belgium
| | - Daniel Hoces
- Institute of Food, Nutrition and Health, D-HEST, ETH Zurich, Zurich, Switzerland
| | - Valerie Gailus-Durner
- Institute of Experimental Genetics and German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Helmut Fuchs
- Institute of Experimental Genetics and German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Jan Rozman
- Institute of Experimental Genetics and German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - D Sean Froese
- Division of Metabolism and Children’s Research Center, University Children’s Hospital Zurich, University of Zurich, 8032 Zurich, Switzerland
- radiz – Rare Disease Initiative Zurich, Clinical Research Priority Program for Rare Diseases, University of Zurich, Zurich, Switzerland
| | - Matthias R Baumgartner
- Division of Metabolism and Children’s Research Center, University Children’s Hospital Zurich, University of Zurich, 8032 Zurich, Switzerland
- radiz – Rare Disease Initiative Zurich, Clinical Research Priority Program for Rare Diseases, University of Zurich, Zurich, Switzerland
- Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Martin Hrabě de Angelis
- Institute of Experimental Genetics and German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
- Chair of Experimental Genetics, School of Life Science Weihenstephan, Technische Universität München, Freising, Germany
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8
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Watkins M, Wang H, Burnim A, Ando N. Conformational switching and flexibility in cobalamin-dependent methionine synthase studied by small-angle X-ray scattering and cryoelectron microscopy. Proc Natl Acad Sci U S A 2023; 120:e2302531120. [PMID: 37339208 PMCID: PMC10293825 DOI: 10.1073/pnas.2302531120] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 05/23/2023] [Indexed: 06/22/2023] Open
Abstract
Cobalamin-dependent methionine synthase (MetH) catalyzes the synthesis of methionine from homocysteine and 5-methyltetrahydrofolate (CH3-H4folate) using the unique chemistry of its cofactor. In doing so, MetH links the cycling of S-adenosylmethionine with the folate cycle in one-carbon metabolism. Extensive biochemical and structural studies on Escherichia coli MetH have shown that this flexible, multidomain enzyme adopts two major conformations to prevent a futile cycle of methionine production and consumption. However, as MetH is highly dynamic as well as both a photosensitive and oxygen-sensitive metalloenzyme, it poses special challenges for structural studies, and existing structures have necessarily come from a "divide and conquer" approach. In this study, we investigate E. coli MetH and a thermophilic homolog from Thermus filiformis using small-angle X-ray scattering (SAXS), single-particle cryoelectron microscopy (cryo-EM), and extensive analysis of the AlphaFold2 database to present a structural description of the full-length MetH in its entirety. Using SAXS, we describe a common resting-state conformation shared by both active and inactive oxidation states of MetH and the roles of CH3-H4folate and flavodoxin in initiating turnover and reactivation. By combining SAXS with a 3.6-Å cryo-EM structure of the T. filiformis MetH, we show that the resting-state conformation consists of a stable arrangement of the catalytic domains that is linked to a highly mobile reactivation domain. Finally, by combining AlphaFold2-guided sequence analysis and our experimental findings, we propose a general model for functional switching in MetH.
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Affiliation(s)
- Maxwell B. Watkins
- Department of Chemistry, Princeton University, Princeton, NJ08544
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY14853
| | - Haoyue Wang
- Field of Biophysics, Cornell University, Ithaca, NY14853
| | - Audrey Burnim
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY14853
| | - Nozomi Ando
- Department of Chemistry, Princeton University, Princeton, NJ08544
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY14853
- Field of Biophysics, Cornell University, Ithaca, NY14853
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9
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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] [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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10
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Tuo LJ, Song XY, Zhu YY, He HN, Song YP, Chen DZ, Zheng XM, Zhang H, Xu DX. Gestational folic acid supplement prevents vitamin D deficiency-induced depression-like behavior by reversing cortical DNA hypomethylation in adult offspring. J Steroid Biochem Mol Biol 2023; 231:106313. [PMID: 37075986 DOI: 10.1016/j.jsbmb.2023.106313] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/27/2023] [Accepted: 04/14/2023] [Indexed: 04/21/2023]
Abstract
Depression is a common mental disorder with an increasing incidence. Several studies have demonstrated that cortical DNA hypomethylation is associated with depression-like behaviors. This study aims to investigate whether maternal vitamin D deficiency (VDD) induces depression-like behaviors and to explore the effects of folic acid supplement on VDD-induced cortical DNA hypomethylation in adult offspring. Female mice were fed with a VDD diet, beginning at 5 weeks of age and throughout pregnancy. Depression-like behaviors were evaluated, and cortical 5-methylcytosine (5mC) content was detected in adult offspring. Results showed that depression-like behaviors were observed in adult offspring of the VDD group. Cortical Ache and Oxtr mRNAs were upregulated in female offspring of the VDD group. Cortical Cpt1a and Htr1b mRNAs were increased in male offspring of the VDD group. Moreover, cortical 5mC content was reduced in offspring of VDD-fed dams. The additional experiment showed that serum folate and cortical S-adenosylmethionine (SAM) contents were decreased in the offspring of the VDD group. Folic acid supplement attenuated VDD-induced SAM depletion and reversed cortical DNA methylation. Moreover, folic acid supplement attenuated VDD-induced upregulation of depression-related genes. In addition, folic acid supplement alleviated maternal VDD-induced depression-like behaviors in adult offspring. These results suggest that maternal VDD induces depression-like behavior in adult offspring by reducing cortical DNA methylation. The gestational folic acid supplement prevents VDD-induced depression-like behavior by reversing cortical DNA hypomethylation in adult offspring.
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Affiliation(s)
- Ling-Jin Tuo
- Department of Toxicology, Anhui Medical University, Hefei 230032, China
| | - Xiao-Yue Song
- Department of Toxicology, Anhui Medical University, Hefei 230032, China
| | - Yan-Yan Zhu
- Department of Toxicology, Anhui Medical University, Hefei 230032, China
| | - Hong-Ning He
- Department of Toxicology, Anhui Medical University, Hefei 230032, China
| | - Ya-Ping Song
- Department of Toxicology, Anhui Medical University, Hefei 230032, China
| | - Dao-Zhen Chen
- Department of Clinical Laboratory, Wuxi Maternity and Child Health Care Hospital, Wuxi 214002, China; Laboratory Department of Haidong Second People's Hospital, Haidong, Qinghai 810699, China
| | - Xiao-Min Zheng
- Research Institute for Reproductive Medicine and Genetic Diseases, Wuxi Maternity and Child Health Hospital, Wuxi, 214002, China
| | - Heng Zhang
- Department of Toxicology, Anhui Medical University, Hefei 230032, China; Department of Child Health Care, Wuxi Maternity and Child Health Care Hospital, Wuxi 214002, China.
| | - De-Xiang Xu
- Department of Toxicology, Anhui Medical University, Hefei 230032, China.
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11
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Watkins MB, Wang H, Burnim A, Ando N. Conformational switching and flexibility in cobalamin-dependent methionine synthase studied by small-angle X-ray scattering and cryo-electron microscopy. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.11.528079. [PMID: 36798380 PMCID: PMC9934640 DOI: 10.1101/2023.02.11.528079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Cobalamin-dependent methionine synthase (MetH) catalyzes the synthesis of methionine from homocysteine and 5-methyltetrahydrofolate (CH 3 -H 4 folate) using the unique chemistry of its cofactor. In doing so, MetH links the cycling of S -adenosylmethionine with the folate cycle in one-carbon metabolism. Extensive biochemical and structural studies on Escherichia coli MetH have shown that this flexible, multi-domain enzyme adopts two major conformations to prevent a futile cycle of methionine production and consumption. However, as MetH is highly dynamic as well as both a photosensitive and oxygen-sensitive metalloenzyme, it poses special challenges for structural studies, and existing structures have necessarily come from a "divide and conquer" approach. In this study, we investigate E. coli MetH and a thermophilic homolog from Thermus filiformis using small-angle X-ray scattering (SAXS), single-particle cryo-electron microscopy (cryo-EM), and extensive analysis of the AlphaFold2 database to present the first structural description of MetH in its entirety. Using SAXS, we describe a common resting-state conformation shared by both active and inactive oxidation states of MetH and the roles of CH 3 -H 4 folate and flavodoxin in initiating turnover and reactivation. By combining SAXS with a 3.6-Å cryo-EM structure of the T. filiformis MetH, we show that the resting-state conformation consists of a stable arrangement of the catalytic domains that is linked to a highly mobile reactivation domain. Finally, by combining AlphaFold2-guided sequence analysis and our experimental findings, we propose a general model for functional switching in MetH.
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Affiliation(s)
- Maxwell B. Watkins
- Department of Chemistry, Princeton University, Princeton, NJ, 08544, USA,Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA
| | - Haoyue Wang
- Field of Biophysics, Cornell University, Ithaca, NY 14853, USA
| | - Audrey Burnim
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA
| | - Nozomi Ando
- Department of Chemistry, Princeton University, Princeton, NJ, 08544, USA,Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA,Field of Biophysics, Cornell University, Ithaca, NY 14853, USA,Correspondence should be addressed to
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12
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Stemness of Normal and Cancer Cells: The Influence of Methionine Needs and SIRT1/PGC-1α/PPAR-α Players. Cells 2022; 11:cells11223607. [PMID: 36429035 PMCID: PMC9688847 DOI: 10.3390/cells11223607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 11/09/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
Stem cells are a population of undifferentiated cells with self-renewal and differentiation capacities. Normal and cancer stem cells share similar characteristics in relation to their stemness properties. One-carbon metabolism (OCM), a network of interconnected reactions, plays an important role in this dependence through its role in the endogenous synthesis of methionine and S-adenosylmethionine (SAM), the universal donor of methyl groups in eukaryotic cells. OCM genes are differentially expressed in stem cells, compared to their differentiated counterparts. Furthermore, cultivating stem cells in methionine-restricted conditions hinders their stemness capacities through decreased SAM levels with a subsequent decrease in histone methylation, notably H3K4me3, with a decrease in stem cell markers. Stem cells' reliance on methionine is linked to several mechanisms, including high methionine flux or low endogenous methionine biosynthesis. In this review, we provide an overview of the recent discoveries concerning this metabolic dependence and we discuss the mechanisms behind them. We highlight the influence of SIRT1 on SAM synthesis and suggest a role of PGC-1α/PPAR-α in impaired stemness produced by methionine deprivation. In addition, we discuss the potential interest of methionine restriction in regenerative medicine and cancer treatment.
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13
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Guéant JL, Feillet F. Inherited metabolic disorders beyond the new generation sequencing era: the need for in-depth cellular and molecular phenotyping. Hum Genet 2022; 141:1235-1237. [PMID: 35754062 DOI: 10.1007/s00439-022-02467-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Jean-Louis Guéant
- INSERM, UMR_S1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure and Reference Centre of Inborn Metabolism Diseases, University of Lorraine, Avenue de la Forêt de Haye, Vandoeuvre-Lès-Nancy, 54500, Nancy, France. .,Reference Centre of Inborn Metabolism Diseases and Department of Molecular Medicine, University Hospital Center, 54500, Nancy, France.
| | - François Feillet
- INSERM, UMR_S1256, NGERE - Nutrition, Genetics, and Environmental Risk Exposure and Reference Centre of Inborn Metabolism Diseases, University of Lorraine, Avenue de la Forêt de Haye, Vandoeuvre-Lès-Nancy, 54500, Nancy, France.,Reference Centre of Inborn Metabolism Diseases and Department of Molecular Medicine, University Hospital Center, 54500, Nancy, France
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14
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Head PE, Myung S, Chen Y, Schneller JL, Wang C, Duncan N, Hoffman P, Chang D, Gebremariam A, Gucek M, Manoli I, Venditti CP. Aberrant methylmalonylation underlies methylmalonic acidemia and is attenuated by an engineered sirtuin. Sci Transl Med 2022; 14:eabn4772. [PMID: 35613279 PMCID: PMC10468269 DOI: 10.1126/scitranslmed.abn4772] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Organic acidemias such as methylmalonic acidemia (MMA) are a group of inborn errors of metabolism that typically arise from defects in the catabolism of amino and fatty acids. Accretion of acyl-CoA species is postulated to underlie disease pathophysiology, but the mechanism(s) remain unknown. Here, we surveyed hepatic explants from patients with MMA and unaffected donors, in parallel with samples from various mouse models of methylmalonyl-CoA mutase deficiency. We found a widespread posttranslational modification, methylmalonylation, that inhibited enzymes in the urea cycle and glycine cleavage pathway in MMA. Biochemical studies and mouse genetics established that sirtuin 5 (SIRT5) controlled the metabolism of MMA-related posttranslational modifications. SIRT5 was engineered to resist acylation-driven inhibition via lysine to arginine mutagenesis. The modified SIRT5 was used to create an adeno-associated viral 8 (AAV8) vector and systemically delivered to mutant and control mice. Gene therapy ameliorated hyperammonemia and reduced global methylmalonylation in the MMA mice.
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Affiliation(s)
- PamelaSara E. Head
- National Institute of General Medical Sciences, NIH, 45 Center Drive MSC 6200 Bethesda, MD, 20892-6200 USA
- National Human Genome Research Institute, NIH, Bethesda, MD, 10 Center Drive Building 10, Room 7S257 Bethesda, MD 20892, USA
| | - Sangho Myung
- National Human Genome Research Institute, NIH, Bethesda, MD, 10 Center Drive Building 10, Room 7S257 Bethesda, MD 20892, USA
| | - Yong Chen
- National Heart Lung and Blood Institute, NIH, Building 31, 31 Center Drive Bethesda, MD 20892, USA
| | - Jessica L. Schneller
- National Human Genome Research Institute, NIH, Bethesda, MD, 10 Center Drive Building 10, Room 7S257 Bethesda, MD 20892, USA
| | - Cindy Wang
- National Human Genome Research Institute, NIH, Bethesda, MD, 10 Center Drive Building 10, Room 7S257 Bethesda, MD 20892, USA
| | - Nicholas Duncan
- National Human Genome Research Institute, NIH, Bethesda, MD, 10 Center Drive Building 10, Room 7S257 Bethesda, MD 20892, USA
| | - Pauline Hoffman
- National Human Genome Research Institute, NIH, Bethesda, MD, 10 Center Drive Building 10, Room 7S257 Bethesda, MD 20892, USA
| | - David Chang
- National Human Genome Research Institute, NIH, Bethesda, MD, 10 Center Drive Building 10, Room 7S257 Bethesda, MD 20892, USA
| | - Abigael Gebremariam
- National Human Genome Research Institute, NIH, Bethesda, MD, 10 Center Drive Building 10, Room 7S257 Bethesda, MD 20892, USA
| | - Marjan Gucek
- National Heart Lung and Blood Institute, NIH, Building 31, 31 Center Drive Bethesda, MD 20892, USA
| | - Irini Manoli
- National Human Genome Research Institute, NIH, Bethesda, MD, 10 Center Drive Building 10, Room 7S257 Bethesda, MD 20892, USA
| | - Charles P. Venditti
- National Human Genome Research Institute, NIH, Bethesda, MD, 10 Center Drive Building 10, Room 7S257 Bethesda, MD 20892, USA
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15
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An R, Li D, Dong Y, She Q, Zhou T, Nie X, Pan R, Deng Y. Methylcobalamin Protects Melanocytes from H 2O 2-Induced Oxidative Stress by Activating the Nrf2/HO-1 Pathway. Drug Des Devel Ther 2021; 15:4837-4848. [PMID: 34876806 PMCID: PMC8643160 DOI: 10.2147/dddt.s336066] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 11/11/2021] [Indexed: 12/28/2022] Open
Abstract
Purpose Oxidative stress is considered a major determinant in the pathogenesis of vitiligo. Methylcobalamin (MeCbl) is an activated form of vitamin B12 that regulates inflammatory factors, counters oxidative stress, and reduces apoptosis in many disease models. However, the specific mechanism of MeCbl repigmentation against vitiligo is unknown. In this study, we explored the effect of MeCbl on melanocytes following hydrogen peroxide (H2O2)-induced oxidative stress. Methods We established an oxidative stress model using the immortalized human normal melanocyte cell line PIG1. We used a Cell Counting Kit-8 (CCK-8) to detect drug cytotoxicity, and we measured the melanin content of cells using the NaOH method. Intracellular oxidative damage was assessed by flow cytometry and antioxidant enzyme detection kits. In addition, we assessed the presence of apoptosis by flow cytometry and Western blots. We explored the underlying mechanisms of MeCbl during oxidative stress in melanocytes by analyzing the results of experiments based on real-time quantitative polymerase chain reaction (RT-qPCR), Western blotting, and laser scanning confocal immunofluorescence microscopy. Finally, we repeated the experiments after applying an inhibitor to block the Nrf2 pathway. Results We found that MeCbl treatment enhanced cell viability, increased melanin content, reduced intracellular reactive oxygen species (ROS) accumulation, increased the activities of antioxidant enzyme superoxide dismutase (SOD) and catalase (CAT), reduced melanocyte apoptosis, and up-regulated the expression of the Nrf2/HO-1 pathway. Moreover, the protective effects of MeCbl were significantly weakened after inhibiting the Nrf2/HO-1 pathway. Conclusion Our results indicate that MeCbl attenuated the H2O2-induced oxidative stress in melanocytes by activating the Nrf2/HO-1 pathway, this suggests that MeCbl may be an effective treatment against vitiligo.
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Affiliation(s)
- Ran An
- Department of Dermatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China.,Department of Dermatology, Children's Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Dong Li
- Department of Dermatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Yingying Dong
- Department of Dermatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Qiuyun She
- Department of Dermatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Ting Zhou
- Department of Dermatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Xiaoqi Nie
- Department of Dermatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Ronghua Pan
- Department of Dermatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Yunhua Deng
- Department of Dermatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
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