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Tanaka T, Matsumoto A, Klymchenko AS, Tsurumaki E, Ikenouchi J, Konishi G. Fluorescent Solvatochromic Probes for Long-Term Imaging of Lipid Order in Living Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309721. [PMID: 38468355 PMCID: PMC11077641 DOI: 10.1002/advs.202309721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/28/2024] [Indexed: 03/13/2024]
Abstract
High-resolution spatio-temporal monitoring of the cell membrane lipid order provides visual insights into the complex and sophisticated systems that control cellular physiological functions. Solvatochromic fluorescent probes are highly promising noninvasive visualization tools for identifying the ordering of the microenvironment of plasma membrane microdomains. However, conventional probes, although capable of structural analysis, lack the necessary long-term photostability required for live imaging at the cellular level. Here, an ultra-high-light-resistant solvatochromic fluorescence probe, 2-N,N-diethylamino-7-(4-methoxycarbonylphenyl)-9,9-dimethylfluorene (FπCM) is reported, which enables live lipid order imaging of cell division. This probe and its derivatives exhibit sufficient fluorescence wavelengths, brightness, polarity responsiveness, low phototoxicity, and remarkable photostability under physiological conditions compared to conventional solvatochromic probes. Therefore, these probes have the potential to overcome the limitations of fluorescence microscopy, particularly those associated with photobleaching. FπCM probes can serve as valuable tools for elucidating mechanisms of cellular processes at the bio-membrane level.
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Affiliation(s)
- Takuya Tanaka
- Department of Chemical Science and EngineeringTokyo Institute of TechnologyTokyo152‐8552Japan
| | - Atsushi Matsumoto
- Department of BiologyFaculty of SciencesKyushu UniversityFukuoka819‐0395Japan
| | - Andery S. Klymchenko
- Laboratoire de Bioimagerie et PathologiesUMR 7021 CNRSUniversité de Strasbourg74 route du RhinIllkirch67401France
| | - Eiji Tsurumaki
- Department of ChemistryTokyo Institute of TechnologyTokyo152‐8552Japan
| | - Junichi Ikenouchi
- Department of BiologyFaculty of SciencesKyushu UniversityFukuoka819‐0395Japan
| | - Gen‐ichi Konishi
- Department of Chemical Science and EngineeringTokyo Institute of TechnologyTokyo152‐8552Japan
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Hooshmand K, Xu J, Simonsen AH, Wretlind A, de Zawadzki A, Sulek K, Hasselbalch SG, Legido-Quigley C. Human Cerebrospinal Fluid Sample Preparation and Annotation for Integrated Lipidomics and Metabolomics Profiling Studies. Mol Neurobiol 2024; 61:2021-2032. [PMID: 37843799 DOI: 10.1007/s12035-023-03666-4] [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: 12/07/2022] [Accepted: 09/21/2023] [Indexed: 10/17/2023]
Abstract
Cerebrospinal fluid (CSF) is a metabolically diverse biofluid and a key specimen for exploring biochemical changes in neurodegenerative diseases. Detecting lipid species in CSF using mass spectrometry (MS)-based techniques remains challenging because lipids are highly complex in structure, and their concentrations span over a broad dynamic range. This work aimed to develop a robust lipidomics and metabolomics method based on commonly used two-phase extraction systems from human CSF samples. Prioritizing lipid detection, biphasic extraction methods, Folch, Bligh and Dyer (B&D), Matyash, and acidified Folch and B&D (aFolch and aB&D) were compared using 150 μL of human CSF samples for the simultaneous extraction of lipids and metabolites with a wide range of polarity. Multiple chromatographical separation approaches, including reversed-phase liquid chromatography (RPLC), hydrophilic interaction liquid chromatography (HILIC), and gas chromatography (GC), were utilized to characterize human CSF metabolome. The aB&D method was found as the most reproducible technique (RSD < 15%) for lipid extraction. The aB&D and B&D yielded the highest peak intensities for targeted lipid internal standards and displayed superior extracting power for major endogenous lipid classes. A total of 674 unique metabolites with a wide polarity range were annotated in CSF using, combining RPLC-MS/MS lipidomics (n = 219), HILIC-MS/MS (n = 304), and GC-quadrupole time of flight (QTOF) MS (n = 151). Overall, our findings show that the aB&D extraction method provided suitable lipid coverage, reproducibility, and extraction efficiency for global lipidomics profiling of human CSF samples. In combination with RPLC-MS/MS lipidomics, complementary screening approaches enabled a comprehensive metabolite signature that can be employed in an array of clinical studies.
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Affiliation(s)
| | - Jin Xu
- Institute of Pharmaceutical Sciences, Faculty of Life Sciences and Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, UK
| | - Anja Hviid Simonsen
- Danish Dementia Research Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Asger Wretlind
- System Medicine, Steno Diabetes Center Copenhagen, Herlev, Denmark
| | | | - Karolina Sulek
- System Medicine, Steno Diabetes Center Copenhagen, Herlev, Denmark
| | - Steen Gregers Hasselbalch
- Danish Dementia Research Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Cristina Legido-Quigley
- System Medicine, Steno Diabetes Center Copenhagen, Herlev, Denmark.
- Institute of Pharmaceutical Sciences, Faculty of Life Sciences and Medicine, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, UK.
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3
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Wang S, He T, Wang H. Non-targeted metabolomics study for discovery of hepatocellular carcinoma serum diagnostic biomarker. J Pharm Biomed Anal 2024; 239:115869. [PMID: 38064771 DOI: 10.1016/j.jpba.2023.115869] [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: 09/26/2023] [Revised: 11/06/2023] [Accepted: 11/20/2023] [Indexed: 01/05/2024]
Abstract
Hepatocellular carcinoma (HCC) is one of the most prevalent malignant cancers worldwide. Due to the asymptomatic features of HCC at early stages, patients are often diagnosed at advanced stages and missed effective treatment. Thus, there is an urgent need to identify sensitive and specific biomarkers for HCC early diagnosis. In the present study, an ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) approach was used to profile serum metabolites from HCC patients, liver cirrhosis (LC) patients, and normal controls (NC). Univariate and multivariate statistical analyses were performed to obtain the metabolomic differences of the three groups and select significantly changed metabolites that can be used as diagnostic biomarkers. In total, 757 differential metabolites were quantified among the three groups, and pathway enrichment analysis of these metabolites indicated that glycerophospholipid metabolism, pentose and glucuronate interconversions, phenylalanine, tyrosine and tryptophan biosynthesis, and linoleic acid metabolism were the most altered pathways involved in HCC development. Receiver operating characteristic (ROC) curve analysis was performed to select and evaluate the diagnostic biomarker performance. Seven metabolites were identified as potential biomarkers that can differentiate HCC from LC and NC, and LC from NC with the good diagnostic performance of area under the curve (AUC) from 0.890 to 0.990. In summary, our findings provide highly effective biomarker candidates to differentiate HCC from LC and NC, LC, and NC, which shed insight into HCC pathological mechanisms and will be helpful in better understanding and managing HCC.
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Affiliation(s)
- Shufeng Wang
- Keystonobel Biotechnologies and Pharmaceuticals (Beijing) Co., Ltd, Beijing 100176, PR China
| | - Tingting He
- Department of Hepatology Medicine of Traditional Chinese Medicine, the Fifth Medical Center of Chinese PLA General Hospital, Beijing 100039, PR China
| | - Hongxia Wang
- Institute of Mass Spectrometry, Zhejiang Engineering Research Center of Advanced Mass Spectrometry and Clinical Application, Ningbo University, Ningbo 315211, PR China; School of Material Science and Chemical Engineering Ningbo University, Ningbo 315211, PR China; Ningbo Zhenhai Institute of Mass Spectrometry, Ningbo 315206, PR China.
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4
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Sun H, Zhang J, Ye Q, Jiang T, Liu X, Zhang X, Zeng F, Li J, Zheng Y, Han X, Su C, Shi Y. LPGAT1 controls MEGDEL syndrome by coupling phosphatidylglycerol remodeling with mitochondrial transport. Cell Rep 2023; 42:113214. [PMID: 37917582 PMCID: PMC10729602 DOI: 10.1016/j.celrep.2023.113214] [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: 05/08/2023] [Revised: 08/21/2023] [Accepted: 09/19/2023] [Indexed: 11/04/2023] Open
Abstract
Phosphatidylglycerol (PG) is a mitochondrial phospholipid required for mitochondrial cristae structure and cardiolipin synthesis. PG must be remodeled to its mature form at the endoplasmic reticulum (ER) after mitochondrial biosynthesis to achieve its biological functions. Defective PG remodeling causes MEGDEL (non-alcohol fatty liver disease and 3-methylglutaconic aciduria with deafness, encephalopathy, and Leigh-like) syndrome through poorly defined mechanisms. Here, we identify LPGAT1, an acyltransferase that catalyzes PG remodeling, as a candidate gene for MEGDEL syndrome. We show that PG remodeling by LPGAT1 at the ER is closely coordinated with mitochondrial transport through interaction with the prohibitin/TIMM14 mitochondrial import motor. Accordingly, ablation of LPGAT1 or TIMM14 not only causes aberrant fatty acyl compositions but also ER retention of newly remodeled PG, leading to profound loss in mitochondrial crista structure and respiration. Consequently, genetic deletion of the LPGAT1 in mice leads to cardinal features of MEGDEL syndrome, including 3-methylglutaconic aciduria, deafness, dilated cardiomyopathy, and premature death, which are highly reminiscent of those caused by TIMM14 mutations in humans.
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Affiliation(s)
- Haoran Sun
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 101 Longmian Avenue, Nanjing, Jiangsu Province 211166, China
| | - Jun Zhang
- Sam and Ann Barshop Institute for Longevity and Aging Studies, Department of Pharmacology, University of Texas Health Science Center at San Antonio, 4939 Charles Katz Drive, San Antonio, TX 78229, USA
| | - Qianqian Ye
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 101 Longmian Avenue, Nanjing, Jiangsu Province 211166, China; Sam and Ann Barshop Institute for Longevity and Aging Studies, Department of Pharmacology, University of Texas Health Science Center at San Antonio, 4939 Charles Katz Drive, San Antonio, TX 78229, USA
| | - Ting Jiang
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 101 Longmian Avenue, Nanjing, Jiangsu Province 211166, China
| | - Xueling Liu
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 101 Longmian Avenue, Nanjing, Jiangsu Province 211166, China
| | - Xiaoyang Zhang
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 101 Longmian Avenue, Nanjing, Jiangsu Province 211166, China
| | - Fanyu Zeng
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 101 Longmian Avenue, Nanjing, Jiangsu Province 211166, China; Sam and Ann Barshop Institute for Longevity and Aging Studies, Department of Pharmacology, University of Texas Health Science Center at San Antonio, 4939 Charles Katz Drive, San Antonio, TX 78229, USA
| | - Jie Li
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 101 Longmian Avenue, Nanjing, Jiangsu Province 211166, China
| | - Yue Zheng
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 101 Longmian Avenue, Nanjing, Jiangsu Province 211166, China
| | - Xianlin Han
- Sam and Ann Barshop Institute for Longevity and Aging Studies, Department of Pharmacology, University of Texas Health Science Center at San Antonio, 4939 Charles Katz Drive, San Antonio, TX 78229, USA
| | - Chuan Su
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, 101 Longmian Avenue, Nanjing, Jiangsu Province 211166, China
| | - Yuguang Shi
- Sam and Ann Barshop Institute for Longevity and Aging Studies, Department of Pharmacology, University of Texas Health Science Center at San Antonio, 4939 Charles Katz Drive, San Antonio, TX 78229, USA.
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Jaafar AK, Techer R, Chemello K, Lambert G, Bourane S. PCSK9 and the nervous system: a no-brainer? J Lipid Res 2023; 64:100426. [PMID: 37586604 PMCID: PMC10491654 DOI: 10.1016/j.jlr.2023.100426] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/08/2023] [Accepted: 08/10/2023] [Indexed: 08/18/2023] Open
Abstract
In the past 20 years, PCSK9 has been shown to play a pivotal role in LDL cholesterol metabolism and cardiovascular health by inducing the lysosomal degradation of the LDL receptor. PCSK9 was discovered by the cloning of genes up-regulated after apoptosis induced by serum deprivation in primary cerebellar neurons, but despite its initial identification in the brain, the precise role of PCSK9 in the nervous system remains to be clearly established. The present article is a comprehensive review of studies published or in print before July 2023 that have investigated the expression pattern of PCSK9, its effects on lipid metabolism as well as its putative roles specifically in the central and peripheral nervous systems, with a special focus on cerebrovascular and neurodegenerative diseases.
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Affiliation(s)
- Ali K Jaafar
- Laboratoire Inserm UMR 1188 DéTROI, Saint-Pierre, La Réunion, France
| | - Romuald Techer
- Laboratoire Inserm UMR 1188 DéTROI, Saint-Pierre, La Réunion, France
| | - Kévin Chemello
- Laboratoire Inserm UMR 1188 DéTROI, Saint-Pierre, La Réunion, France
| | - Gilles Lambert
- Laboratoire Inserm UMR 1188 DéTROI, Saint-Pierre, La Réunion, France; Faculté de Médecine, Université de La Réunion, Saint-Pierre, La Réunion, France.
| | - Steeve Bourane
- Laboratoire Inserm UMR 1188 DéTROI, Saint-Pierre, La Réunion, France
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Bennett TM, Zhou Y, Meyer KJ, Anderson MG, Shiels A. Whole-exome sequencing prioritizes candidate genes for hereditary cataract in the Emory mouse mutant. G3 (BETHESDA, MD.) 2023; 13:jkad055. [PMID: 36891866 PMCID: PMC10151407 DOI: 10.1093/g3journal/jkad055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/20/2023] [Accepted: 02/28/2023] [Indexed: 03/10/2023]
Abstract
The Emory cataract (Em) mouse mutant has long been proposed as an animal model for age-related or senile cataract in humans-a leading cause of visual impairment. However, the genetic defect(s) underlying the autosomal dominant Em phenotype remains elusive. Here, we confirmed development of the cataract phenotype in commercially available Em/J mice [but not ancestral Carworth Farms White (CFW) mice] at 6-8 months of age and undertook whole-exome sequencing of candidate genes for Em. Analysis of coding and splice-site variants did not identify any disease-causing/associated mutations in over 450 genes known to underlie inherited and age-related forms of cataract and other lens disorders in humans and mice, including genes for lens crystallins, membrane/cytoskeleton proteins, DNA/RNA-binding proteins, and those associated with syndromic/systemic forms of cataract. However, we identified three cataract/lens-associated genes each with one novel homozygous variant including predicted missense substitutions in Prx (p.R167C) and Adamts10 (p.P761L) and a disruptive in-frame deletion variant (predicted missense) in Abhd12 (p.L30_A32delinsS) that were absent in CFW and over 35 other mouse strains. In silico analysis predicted that the missense substitutions in Prx and Adamts10 were borderline neutral/damaging and neutral, respectively, at the protein function level, whereas, that in Abhd12 was functionally damaging. Both the human counterparts of Adamts10 and Abhd12 are clinically associated with syndromic forms of cataract known as Weil-Marchesani syndrome 1 and polyneuropathy, hearing loss, ataxia, retinitis pigmentosa, and cataract syndrome, respectively. Overall, while we cannot exclude Prx and Adamts10, our data suggest that Abhd12 is a promising candidate gene for cataract in the Em/J mouse.
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Affiliation(s)
- Thomas M Bennett
- Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Yuefang Zhou
- Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Kacie J Meyer
- Department of Molecular Physiology and Biophysics, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Michael G Anderson
- Department of Molecular Physiology and Biophysics, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Alan Shiels
- Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA
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Membrane Lipid Reshaping Underlies Oxidative Stress Sensing by the Mitochondrial Proteins UCP1 and ANT1. Antioxidants (Basel) 2022; 11:antiox11122314. [PMID: 36552523 PMCID: PMC9774536 DOI: 10.3390/antiox11122314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/24/2022] Open
Abstract
Oxidative stress and ROS are important players in the pathogenesis of numerous diseases. In addition to directly altering proteins, ROS also affects lipids with negative intrinsic curvature such as phosphatidylethanolamine (PE), producing PE adducts and lysolipids. The formation of PE adducts potentiates the protonophoric activity of mitochondrial uncoupling proteins, but the molecular mechanism remains unclear. Here, we linked the ROS-mediated change in lipid shape to the mechanical properties of the membrane and the function of uncoupling protein 1 (UCP1) and adenine nucleotide translocase 1 (ANT1). We show that the increase in the protonophoric activity of both proteins occurs due to the decrease in bending modulus in lipid bilayers in the presence of lysophosphatidylcholines (OPC and MPC) and PE adducts. Moreover, MD simulations showed that modified PEs and lysolipids change the lateral pressure profile of the membrane in the same direction and by the similar amplitude, indicating that modified PEs act as lipids with positive intrinsic curvature. Both results indicate that oxidative stress decreases stored curvature elastic stress (SCES) in the lipid bilayer membrane. We demonstrated that UCP1 and ANT1 sense SCES and proposed a novel regulatory mechanism for the function of these proteins. The new findings should draw the attention of the scientific community to this important and unexplored area of redox biochemistry.
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Yamamoto S, Hashidate-Yoshida T, Shimizu T, Shindou H. Profiling of fatty acid metabolism in the dorsal root ganglion after peripheral nerve injury. FRONTIERS IN PAIN RESEARCH 2022; 3:948689. [PMID: 35965594 PMCID: PMC9372306 DOI: 10.3389/fpain.2022.948689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 07/06/2022] [Indexed: 12/04/2022] Open
Abstract
Peripheral nerve injury (PNI) induces neuronal hyperexcitability, which underlies neuropathic pain. The emergence of RNA sequencing technologies has enabled profiling of transcriptional changes in pathological conditions. However, these approaches do not provide information regarding metabolites such as lipids that are not directly encoded by genes. Fatty acids (FAs) are some of the essential lipids in mammalian organisms and are mainly stored as membrane phospholipids. In response to various biological stimuli, FAs are rapidly released and converted into several mediators, such as eicosanoids and docosanoids. FAs themselves or their metabolites play important roles in physiology and pathology. In this study, using a comprehensive lipidomic analysis of FA metabolites, 152 species were measured in the dorsal root ganglia of mice at multiple time points after PNI. We found that PNI increased the ω-6 FA metabolites produced by cyclooxygenases but not those produced by lipoxygenases or cytochrome P450 enzymes in the dorsal root ganglia. In contrast, ω-3 FA metabolites biosynthesized by any enzyme transiently increased after nerve injury. Overall, these findings provide a new resource and valuable insights into PNI pathologies, including pain and nerve regeneration.
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Affiliation(s)
- Shota Yamamoto
- Department of Lipid Life Science, National Center for Global Health and Medicine, Tokyo, Japan
- *Correspondence: Shota Yamamoto
| | | | - Takao Shimizu
- Institute of Microbial Chemistry, Tokyo, Japan
- Department of Lipid Signaling, National Center for Global Health and Medicine, Tokyo, Japan
| | - Hideo Shindou
- Department of Lipid Life Science, National Center for Global Health and Medicine, Tokyo, Japan
- Department of Medical Lipid Science, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Hideo Shindou
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Yang F, Jiang X, Zhu Y, Lee M, Xu Z, Zhang J, Li Q, Lin MY, Wang H, Lin Z. Bi-allelic Variants in LSS Cause Palmoplantar Keratoderma-Congenital Alopecia Syndrome Type 2. J Invest Dermatol 2022; 142:2687-2694.e2. [DOI: 10.1016/j.jid.2022.03.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/24/2022] [Accepted: 03/24/2022] [Indexed: 11/15/2022]
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10
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Kister A, Kister I. Overview of myelin, major myelin lipids, and myelin-associated proteins. Front Chem 2022; 10:1041961. [PMID: 36896314 PMCID: PMC9989179 DOI: 10.3389/fchem.2022.1041961] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 12/23/2022] [Indexed: 02/23/2023] Open
Abstract
Myelin is a modified cell membrane that forms a multilayer sheath around the axon. It retains the main characteristics of biological membranes, such as lipid bilayer, but differs from them in several important respects. In this review, we focus on aspects of myelin composition that are peculiar to this structure and differentiate it from the more conventional cell membranes, with special attention to its constituent lipid components and several of the most common and important myelin proteins: myelin basic protein, proteolipid protein, and myelin protein zero. We also discuss the many-fold functions of myelin, which include reliable electrical insulation of axons to ensure rapid propagation of nerve impulses, provision of trophic support along the axon and organization of the unmyelinated nodes of Ranvier, as well as the relationship between myelin biology and neurologic disease such as multiple sclerosis. We conclude with a brief history of discovery in the field and outline questions for future research.
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Affiliation(s)
- Alexander Kister
- Department of Neurology, New York University Grossman School of Medicine, New York, NY, United States
| | - Ilya Kister
- Department of Neurology, New York University Grossman School of Medicine, New York, NY, United States
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11
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Ishaq M, Bandara N, Morgan S, Nowell C, Mehdi AM, Lyu R, McCarthy D, Anderson D, Creek DJ, Achen MG, Shayan R, Karnezis T. Key signaling networks are dysregulated in patients with the adipose tissue disorder, lipedema. Int J Obes (Lond) 2021; 46:502-514. [PMID: 34764426 PMCID: PMC8873020 DOI: 10.1038/s41366-021-01002-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 10/11/2021] [Accepted: 10/13/2021] [Indexed: 01/04/2023]
Abstract
Objectives Lipedema, a poorly understood chronic disease of adipose hyper-deposition, is often mistaken for obesity and causes significant impairment to mobility and quality-of-life. To identify molecular mechanisms underpinning lipedema, we employed comprehensive omics-based comparative analyses of whole tissue, adipocyte precursors (adipose-derived stem cells (ADSCs)), and adipocytes from patients with or without lipedema. Methods We compared whole-tissues, ADSCs, and adipocytes from body mass index–matched lipedema (n = 14) and unaffected (n = 10) patients using comprehensive global lipidomic and metabolomic analyses, transcriptional profiling, and functional assays. Results Transcriptional profiling revealed >4400 significant differences in lipedema tissue, with altered levels of mRNAs involved in critical signaling and cell function-regulating pathways (e.g., lipid metabolism and cell-cycle/proliferation). Functional assays showed accelerated ADSC proliferation and differentiation in lipedema. Profiling lipedema adipocytes revealed >900 changes in lipid composition and >600 differentially altered metabolites. Transcriptional profiling of lipedema ADSCs and non-lipedema ADSCs revealed significant differential expression of >3400 genes including some involved in extracellular matrix and cell-cycle/proliferation signaling pathways. One upregulated gene in lipedema ADSCs, Bub1, encodes a cell-cycle regulator, central to the kinetochore complex, which regulates several histone proteins involved in cell proliferation. Downstream signaling analysis of lipedema ADSCs demonstrated enhanced activation of histone H2A, a key cell proliferation driver and Bub1 target. Critically, hyperproliferation exhibited by lipedema ADSCs was inhibited by the small molecule Bub1 inhibitor 2OH-BNPP1 and by CRISPR/Cas9-mediated Bub1 gene depletion. Conclusion We found significant differences in gene expression, and lipid and metabolite profiles, in tissue, ADSCs, and adipocytes from lipedema patients compared to non-affected controls. Functional assays demonstrated that dysregulated Bub1 signaling drives increased proliferation of lipedema ADSCs, suggesting a potential mechanism for enhanced adipogenesis in lipedema. Importantly, our characterization of signaling networks driving lipedema identifies potential molecular targets, including Bub1, for novel lipedema therapeutics.
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Affiliation(s)
- Musarat Ishaq
- Lymphatic, Adipose and Regenerative Medicine Laboratory, O'Brien Institute Department, St Vincent's Institute of Medical Research, Fitzroy, VIC, 3065, Australia. .,Department of Medicine, St Vincent's Hospital, University of Melbourne, Fitzroy, VIC, 3065, Australia.
| | - Nadeeka Bandara
- Lymphatic, Adipose and Regenerative Medicine Laboratory, O'Brien Institute Department, St Vincent's Institute of Medical Research, Fitzroy, VIC, 3065, Australia
| | - Steven Morgan
- Lymphatic, Adipose and Regenerative Medicine Laboratory, O'Brien Institute Department, St Vincent's Institute of Medical Research, Fitzroy, VIC, 3065, Australia
| | - Cameron Nowell
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
| | - Ahmad M Mehdi
- Diamantia Institute, Faculty of Medicine, The University of Queensland, St Lucia, QLD, 4067, Australia
| | - Ruqian Lyu
- Bioinformatics and Cellular Genomics, St. Vincent's Institute of Medical Research, Fitzroy, VIC, 3065, Australia
| | - Davis McCarthy
- Bioinformatics and Cellular Genomics, St. Vincent's Institute of Medical Research, Fitzroy, VIC, 3065, Australia
| | - Dovile Anderson
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
| | - Darren J Creek
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
| | - Marc G Achen
- Lymphatic, Adipose and Regenerative Medicine Laboratory, O'Brien Institute Department, St Vincent's Institute of Medical Research, Fitzroy, VIC, 3065, Australia.,Department of Medicine, St Vincent's Hospital, University of Melbourne, Fitzroy, VIC, 3065, Australia
| | - Ramin Shayan
- Lymphatic, Adipose and Regenerative Medicine Laboratory, O'Brien Institute Department, St Vincent's Institute of Medical Research, Fitzroy, VIC, 3065, Australia.,Department of Medicine, St Vincent's Hospital, University of Melbourne, Fitzroy, VIC, 3065, Australia
| | - Tara Karnezis
- Lymphatic, Adipose and Regenerative Medicine Laboratory, O'Brien Institute Department, St Vincent's Institute of Medical Research, Fitzroy, VIC, 3065, Australia. .,Department of Medicine, St Vincent's Hospital, University of Melbourne, Fitzroy, VIC, 3065, Australia.
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12
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The Hitchhiker's Guide to Untargeted Lipidomics Analysis: Practical Guidelines. Metabolites 2021; 11:metabo11110713. [PMID: 34822371 PMCID: PMC8624948 DOI: 10.3390/metabo11110713] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/13/2021] [Accepted: 10/16/2021] [Indexed: 11/30/2022] Open
Abstract
Lipidomics is a newly emerged discipline involving the identification and quantification of thousands of lipids. As a part of the omics field, lipidomics has shown rapid growth both in the number of studies and in the size of lipidome datasets, thus, requiring specific and efficient data analysis approaches. This paper aims to provide guidelines for analyzing and interpreting lipidome data obtained using untargeted methods that rely on liquid chromatography coupled with mass spectrometry (LC-MS) to detect and measure the intensities of lipid compounds. We present a state-of-the-art untargeted LC-MS workflow for lipidomics, from study design to annotation of lipid features, focusing on practical, rather than theoretical, approaches for data analysis, and we outline possible applications of untargeted lipidomics for biological studies. We provide a detailed R notebook designed specifically for untargeted lipidome LC-MS data analysis, which is based on xcms software.
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13
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Phospholipids: Identification and Implication in Muscle Pathophysiology. Int J Mol Sci 2021; 22:ijms22158176. [PMID: 34360941 PMCID: PMC8347011 DOI: 10.3390/ijms22158176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 07/24/2021] [Accepted: 07/26/2021] [Indexed: 12/29/2022] Open
Abstract
Phospholipids (PLs) are amphiphilic molecules that were essential for life to become cellular. PLs have not only a key role in compartmentation as they are the main components of membrane, but they are also involved in cell signaling, cell metabolism, and even cell pathophysiology. Considered for a long time to simply be structural elements of membranes, phospholipids are increasingly being viewed as sensors of their environment and regulators of many metabolic processes. After presenting their main characteristics, we expose the increasing methods of PL detection and identification that help to understand their key role in life processes. Interest and importance of PL homeostasis is growing as pathogenic variants in genes involved in PL biosynthesis and/or remodeling are linked to human diseases. We here review diseases that involve deregulation of PL homeostasis and present a predominantly muscular phenotype.
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Xiao C, Rossignol F, Vaz FM, Ferreira CR. Inherited disorders of complex lipid metabolism: A clinical review. J Inherit Metab Dis 2021; 44:809-825. [PMID: 33594685 DOI: 10.1002/jimd.12369] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 02/04/2021] [Accepted: 02/09/2021] [Indexed: 02/06/2023]
Abstract
Over 80 human diseases have been attributed to defects in complex lipid metabolism. A majority of them have been reported recently in the setting of rapid advances in genomic technology and their increased use in clinical settings. Lipids are ubiquitous in human biology and play roles in many cellular and intercellular processes. While inborn errors in lipid metabolism can affect every organ system with many examples of genetic heterogeneity and pleiotropy, the clinical manifestations of many of these disorders can be explained based on the disruption of the metabolic pathway involved. In this review, we will discuss the physiological function of major pathways in complex lipid metabolism, including nonlysosomal sphingolipid metabolism, acylceramide metabolism, de novo phospholipid synthesis, phospholipid remodeling, phosphatidylinositol metabolism, mitochondrial cardiolipin synthesis and remodeling, and ether lipid metabolism as well as common clinical phenotypes associated with each.
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Affiliation(s)
- Changrui Xiao
- National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Francis Rossignol
- National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Frédéric M Vaz
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC, University of Amsterdam, Department of Clinical Chemistry and Pediatrics, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
- Core Facility Metabolomics, Amsterdam UMC, Amsterdam, The Netherlands
| | - Carlos R Ferreira
- Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA
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15
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Reactive Deep Eutectic Solvents (RDESs): A New Tool for Phospholipase D-Catalyzed Preparation of Phospholipids. Catalysts 2021. [DOI: 10.3390/catal11060655] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The use of Reactive Deep Eutectic Solvents (RDESs) in the preparation of polar head modified phospholipids (PLs) with phospholipase D (PLD)-catalyzed biotransformations has been investigated. Natural phosphatidylcholine (PC) has been submitted to PLD-catalyzed transphosphatidylations using a new reaction medium composed by a mixture of RDES/buffer. Instead of exploiting deep eutectic solvents conventionally, just as the reaction media, these solvents have been designed here in order to contribute actively to the synthetic processes by participating as reagents. RDESs were prepared using choline chloride or trimethyl glycine as hydrogen-bond acceptors and glycerol or ethylene glycol, as hydrogen-bond donors as well as nucleophiles for choline substitution. Specifically designed RDES/buffer reaction media allowed the obtainment of PLs with optimized yields in the perspective of a sustainable process implementation.
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16
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Kundu R, Chandra A, Datta A. Fluorescent Chemical Tools for Tracking Anionic Phospholipids. Isr J Chem 2021. [DOI: 10.1002/ijch.202100003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Rajasree Kundu
- Department of Chemical Sciences Tata Institute of Fundamental Research 1 Homi Bhabha Road, Colaba Mumbai 400005 India
| | - Amitava Chandra
- Department of Chemical Sciences Tata Institute of Fundamental Research 1 Homi Bhabha Road, Colaba Mumbai 400005 India
| | - Ankona Datta
- Department of Chemical Sciences Tata Institute of Fundamental Research 1 Homi Bhabha Road, Colaba Mumbai 400005 India
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Yee SM, Gillams RJ, McLain SE, Lorenz CD. Effects of lipid heterogeneity on model human brain lipid membranes. SOFT MATTER 2021; 17:126-135. [PMID: 33155582 DOI: 10.1039/d0sm01766c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cell membranes naturally contain a heterogeneous lipid distribution. However, homogeneous bilayers are commonly preferred and utilised in computer simulations due to their relative simplicity, and the availability of lipid force field parameters. Recently, experimental lipidomics data for the human brain cell membranes under healthy and Alzheimer's disease (AD) conditions were investigated, since disruption to the lipid composition has been implicated in neurodegenerative disorders, including AD [R. B. Chan et al., J. Biol. Chem., 2012, 287, 2678-2688]. In order to observe the effects of lipid complexity on the various bilayer properties, molecular dynamics simulations were used to study four membranes with increasing heterogeneity: a pure POPC membrane, a POPC and cholesterol membrane in a 1 : 1 ratio (POPC-CHOL), and to our knowledge, the first realistic models of a healthy brain membrane and an Alzheimer's diseased brain membrane. Numerous structural, interfacial, and dynamical properties, including the area per lipid, interdigitation, dipole potential, and lateral diffusion of the two simple models, POPC and POPC-CHOL, were analysed and compared to those of the complex brain models consisting of 27 lipid components. As the membranes gain heterogeneity, a number of alterations were found in the structural and dynamical properties, and more significant differences were observed in the lateral diffusion. Additionally, we observed snorkeling behaviour of the lipid tails that may play a role in the permeation of small molecules across biological membranes. In this work, atomistic description of realistic brain membrane models is provided, which can add insight towards the permeability and transport pathways of small molecules across these membrane barriers.
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Affiliation(s)
- Sze May Yee
- Department of Physics, King's College London, London WC2R 2LS, UK.
| | - Richard J Gillams
- School of Electronics and Computer Science, and Institute for Life Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | - Sylvia E McLain
- Department of Chemistry, School of Life Sciences, University of Sussex, Brighton BN1 9RH, UK
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Abstract
Cholesterol homeostasis and trafficking are critical to the maintenance of the asymmetric plasma membrane of eukaryotic cells. Disruption or dysfunction of cholesterol trafficking leads to numerous human diseases. ATP-binding cassette (ABC) transporters play several critical roles in this process, and mutations in these sterol transporters lead to disorders such as Tangier disease and sitosterolemia. Biochemical and structural information on ABC sterol transporters is beginning to emerge, with published structures of ABCA1 and ABCG5/G8; these two proteins function in the reverse cholesterol transport pathway and mediate the efflux of cholesterol and xenosterols to high-density lipoprotein and bile salt micelles, respectively. Although both of these transporters belong to the ABC family and mediate the efflux of a sterol substrate, they have many distinct differences. Here, we summarize the current understanding of sterol transport driven by ABC transporters, with an emphasis on these two extensively characterized transporters.
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Affiliation(s)
- Ashlee M Plummer
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA;
| | - Alan T Culbertson
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA;
| | - Maofu Liao
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA;
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19
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Finsterer J, Scorza FA, Fiorini AC, Scorza CA. MEGDEL Syndrome. Pediatr Neurol 2020; 110:25-29. [PMID: 32684373 DOI: 10.1016/j.pediatrneurol.2020.03.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 02/29/2020] [Accepted: 03/03/2020] [Indexed: 12/21/2022]
Abstract
MEGDEL syndrome is an autosomal recessive disorder, clinically characterized by 3-methylglutaconic aciduria, psychomotor delay, muscle hypotonia, sensorineural deafness, and Leigh-like lesions on brain magnetic resonance imaging. MEGDEL syndrome is due to mutations in the serine active site-containing protein 1 (SERAC1) gene. The SERAC1 protein is localized at the interface between the mitochondria and the endoplasmic reticulum in the mitochondrion-associated membrane fraction, which is essential for phospholipid exchange. SERAC1 was identified as a key player in phosphatidylglycerol remodeling, which is essential for both mitochondrial function and intracellular cholesterol trafficking. Since the first description of MEGDEL syndrome in 2006, at least 102 patients have been reported. The phenotypic spectrum of MEGDEL syndrome is much broader than so far anticipated. In addition to the brain, ears, and gastrointestinal tract, the eyes, endocrine organs, heart, peripheral nerves, and the skeletal muscle may be affected. Diagnosing MEGDEL syndrome requires a multidisciplinary approach, including genetic confirmation of a SERAC1 mutation. Treatment is supportive, and the outcome is usually poor with early death, except for the juvenile-onset type.
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Affiliation(s)
| | - Fulvio A Scorza
- Disciplina de Neurociência, Escola Paulista de Medicina/Universidade Federal de São Paulo/, (EPM/UNIFESP), São Paulo, Brazil
| | - Ana C Fiorini
- Programa de Estudos Pós-Graduado em Fonoaudiologia, Pontifícia Universidade Católica de São Paulo (PUC-SP), Departamento de Fonoaudiologia, Escola Paulista de Medicina/Universidade Federal de São Paulo (EPM/UNIFESP), São Paulo, Brazil
| | - Carla A Scorza
- Disciplina de Neurociência, Escola Paulista de Medicina/Universidade Federal de São Paulo/, (EPM/UNIFESP), São Paulo, Brazil
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20
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Giussani P, Prinetti A, Tringali C. The role of Sphingolipids in myelination and myelin stability and their involvement in childhood and adult demyelinating disorders. J Neurochem 2020; 156:403-414. [PMID: 33448358 DOI: 10.1111/jnc.15133] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/14/2020] [Accepted: 07/17/2020] [Indexed: 01/02/2023]
Abstract
Multiple sclerosis (MS) represents the most common demyelinating disease affecting the central nervous system (CNS) in adults as well as in children. Furthermore, in children, in addition to acquired diseases such as MS, genetically inherited diseases significantly contribute to the incidence of demyelinating disorders. Some genetic defects lead to sphingolipid alterations that are able to elicit neurological symptoms. Sphingolipids are essential for brain development, and their aberrant functionality may thus contribute to demyelinating diseases such as MS. In particular, sphingolipidoses caused by deficits of sphingolipid-metabolizing enzymes, are often associated with demyelination. Sphingolipids are not only structural molecules but also bioactive molecules involved in the regulation of cellular events such as development of the nervous system, myelination and maintenance of myelin stability. Changes in the sphingolipid metabolism deeply affect plasma membrane organization. Thus, changes in myelin sphingolipid composition might crucially contribute to the phenotype of diseases characterized by demyelinalization. Here, we review key features of several sphingolipids such as ceramide/dihydroceramide, sphingosine/dihydrosphingosine, glucosylceramide and, galactosylceramide which act in myelin formation during rat brain development and in human brain demyelination during the pathogenesis of MS, suggesting that this knowledge could be useful in identifying targets for possible therapies.
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Affiliation(s)
- Paola Giussani
- Department of Medical Biotechnology and Translational Medicine, Università di Milano, LITA Segrate, Segrate, Italy
| | - Alessandro Prinetti
- Department of Medical Biotechnology and Translational Medicine, Università di Milano, LITA Segrate, Segrate, Italy
| | - Cristina Tringali
- Department of Medical Biotechnology and Translational Medicine, Università di Milano, LITA Segrate, Segrate, Italy
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21
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Velasco HM, Ullah E, Martin AM, Hufnagel RB, Prada CE. Novel progressive acrodysostosis-like skeletal dysplasia, cerebellar atrophy, and ichthyosis. Am J Med Genet A 2020; 182:2214-2221. [PMID: 32783359 DOI: 10.1002/ajmg.a.61782] [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: 02/24/2020] [Revised: 05/09/2020] [Accepted: 06/22/2020] [Indexed: 11/07/2022]
Abstract
Acrodysostosis refers to a rare heterogeneous group of bone dysplasias that share skeletal features, hormone resistance, and intellectual disability. Two genes have been associated with acrodysostosis with or without hormone resistance (PRKAR1A and PDE4D). Severe intellectual disability has been reported with acrodysostosis but brain malformations and ichthyosis have not been reported in these syndromes. Here we describe a female patient with acrodysostosis, intellectual disability, cerebellar hypoplasia, and lamellar ichthyosis. The patient has an evolving distinctive facial phenotype and childhood onset ataxia. X-rays showed generalized osteopenia, shortening of middle and distal phalanges, and abnormal distal epiphysis of the ulna and radius. Brain magnetic resonance imaging showed cerebellar atrophy without other brainstem abnormalities. Genetic workup included nondiagnostic chromosomal microarray and skeletal dysplasia molecular panels. These clinical findings are different from any recognized form of acrodysostosis syndrome. Whole exome sequencing did not identify rare or predicted pathogenic variants in genes associated with known acrodysostosis, lamellar ichthyosis, and other overlapping disorders. A broader search for rare alleles absent in healthy population databases and controls identified two heterozygous truncating alleles in FBNL7 and PPM1M genes, and one missense allele in the NPEPPS gene. Identification of additional patients is required to delineate the mechanism of this unique disorder.
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Affiliation(s)
- Harvy M Velasco
- Master of Science in Human Genetics Program, Department of Morphology, Universidad Nacional de Colombia, Cundinamarca, Colombia
| | - Ehsan Ullah
- Ophthalmic Genetics and Visual Function Branch, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Angela M Martin
- Master of Science in Human Genetics Program, Department of Morphology, Universidad Nacional de Colombia, Cundinamarca, Colombia
| | - Robert B Hufnagel
- Ophthalmic Genetics and Visual Function Branch, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Carlos E Prada
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
- Fundación Cardiovascular de Colombia, Bucaramanga, Colombia
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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22
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Zhang Y, Zhang HX, Zheng QC. In Silico Study of Membrane Lipid Composition Regulating Conformation and Hydration of Influenza Virus B M2 Channel. J Chem Inf Model 2020; 60:3603-3615. [PMID: 32589410 DOI: 10.1021/acs.jcim.0c00329] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The proton conduction of transmembrane influenza virus B M2 (BM2) proton channel is possibly mediated by the membrane environment, but the detailed molecular mechanism is challenging to determine. In this work, how membrane lipid composition regulates the conformation and hydration of BM2 channel is elucidated in silico. The appearance of several important hydrogen-bond networks has been discovered, as the addition of negatively charged lipid palmitoyloleoyl phosphatidylglycerol (POPG) and cholesterol reduces membrane fluidity and augments membrane rigidity. A more rigid membrane environment is beneficial to expand the channel, allow more water to enter the channel, promote channel hydration, and then even affect the proton conduction facilitated by the hydrated channel. Thus, membrane environment could be identified as an important influence factor of conformation and hydration of BM2. These findings can provide a unique perspective for understanding the mechanism of membrane lipid composition regulating conformation and hydration of BM2 and have important significance to the further study of anti-influenza virus B drugs.
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Affiliation(s)
- Yue Zhang
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry, College of Chemistry, Jilin University, Changchun 130023, People's Republic of China
| | - Hong-Xing Zhang
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry, College of Chemistry, Jilin University, Changchun 130023, People's Republic of China
| | - Qing-Chuan Zheng
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry, College of Chemistry, Jilin University, Changchun 130023, People's Republic of China.,Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun 130023, People's Republic of China
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23
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Lipin-1 Deficiency-Associated Recurrent Rhabdomyolysis and Exercise-Induced Myalgia Persisting into Adulthood: A Case Report and Review of Literature. Case Rep Med 2020; 2020:7904190. [PMID: 32549891 PMCID: PMC7275236 DOI: 10.1155/2020/7904190] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 03/08/2020] [Accepted: 03/12/2020] [Indexed: 12/18/2022] Open
Abstract
Phosphatidate phosphatase-1 (lipin-1) is encoded by LPIN1 gene. Lipin-1 deficiency has been reported as the second most common cause of early-onset rhabdomyolysis after primary fatty acid oxidation disorders. We report a case of a 32-year-old Sri Lankan female with a history of more than 10 episodes of rhabdomyolysis and exercise intolerance since childhood. These episodes were triggered by infections and exercise. A temporal relationship between the acute episodes and use of drugs such as theophylline, mefenamic acid, co-trimoxazole, and combined oral contraceptive pills was also noted. There was marked elevation of serum creatine kinase and transaminases during acute episodes. Family history revealed parental consanguinity and an affected sibling who died of an acute episode associated with muscle weakness, dark coloured urine, and cyanosis, at the age of 2 years. The histochemical findings of the patient under discussion were consistent with a metabolic myopathy affecting membrane integrity. A homozygous, likely pathogenic variant c.1684G>T encoding p.(Glu562∗) was identified by clinical exome sequencing. Even though the studies to date give no convincing evidence of a possible causal or contributory relationship between the drugs under discussion and lipin-1 related rhabdomyolysis, this case highlights the importance of pharmacovigilance and reporting adverse drug reactions in patients with lipin-1 deficiency.
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López-Hernández Y, Oropeza-Valdez JJ, Blanco-Sandate JO, Herrera-Van Oostdam AS, Zheng J, Chi Guo A, Lima-Rogel V, Rajabzadeh R, Salgado-Bustamante M, Adrian-Lopez J, Castillo CG, Robles Arguelles E, Monárrez-Espino J, Mandal R, Wishart DS. The Urinary Metabolome of Healthy Newborns. Metabolites 2020; 10:E165. [PMID: 32340350 PMCID: PMC7240964 DOI: 10.3390/metabo10040165] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 04/18/2020] [Accepted: 04/21/2020] [Indexed: 02/06/2023] Open
Abstract
The knowledge of normal metabolite values for neonates is key to establishing robust cut-off values to diagnose diseases, to predict the occurrence of new diseases, to monitor a neonate's metabolism, or to assess their general health status. For full term-newborns, many reference biochemical values are available for blood, serum, plasma and cerebrospinal fluid. However, there is a surprising lack of information about normal urine concentration values for a large number of important metabolites in neonates. In the present work, we used targeted tandem mass spectrometry (MS/MS)-based metabolomic assays to identify and quantify 136 metabolites of biomedical interest in the urine from 48 healthy, full-term term neonates, collected in the first 24 h of life. In addition to this experimental study, we performed a literature review (covering the past eight years and over 500 papers) to update the references values in the Human Metabolome Database/Urine Metabolome Database (HMDB/UMDB). Notably, 86 of the experimentally measured urinary metabolites are being reported in neonates/infants for the first time and another 20 metabolites are being reported in human urine for the first time ever. Sex differences were found for 15 metabolites. The literature review allowed us to identify another 78 urinary metabolites with concentration data. As a result, reference concentration values and ranges for 378 neonatal urinary metabolites are now publicly accessible via the HMDB.
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Affiliation(s)
- Yamilé López-Hernández
- CONACyT, Metabolomics and Proteomics Laboratory, Universidad Autónoma de Zacatecas, Zacatecas 98000, Mexico
| | - Juan José Oropeza-Valdez
- Unidad de Investigación Biomédica de Zacatecas, Instituto Mexicano del Seguro Social, Zacatecas 98000, Mexico;
| | - Jorge O. Blanco-Sandate
- CIACYT-Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, Mexico; (J.O.B.-S.); (C.G.C.)
| | - Ana Sofia Herrera-Van Oostdam
- Biochemistry Department, Faculty of Medicine, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, Mexico; (A.S.H.-V.O.); (M.S.-B.)
| | - Jiamin Zheng
- The Metabolomics Innovation Center, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (A.C.G.); (R.R.); (R.M.)
| | - An Chi Guo
- The Metabolomics Innovation Center, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (A.C.G.); (R.R.); (R.M.)
| | - Victoria Lima-Rogel
- Hospital Central “Dr. Ignacio Morones Prieto”, San Luis Potosí 78290, Mexico;
| | - Rahmatollah Rajabzadeh
- The Metabolomics Innovation Center, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (A.C.G.); (R.R.); (R.M.)
| | - Mariana Salgado-Bustamante
- Biochemistry Department, Faculty of Medicine, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, Mexico; (A.S.H.-V.O.); (M.S.-B.)
| | - Jesus Adrian-Lopez
- MicroRNAs Laboratory, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Zacatecas 98000, Mexico; (J.A.-L.); (E.R.A.)
| | - C. G. Castillo
- CIACYT-Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, Mexico; (J.O.B.-S.); (C.G.C.)
| | - Emilia Robles Arguelles
- MicroRNAs Laboratory, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Zacatecas 98000, Mexico; (J.A.-L.); (E.R.A.)
| | | | - Rupasri Mandal
- The Metabolomics Innovation Center, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (A.C.G.); (R.R.); (R.M.)
| | - David S. Wishart
- The Metabolomics Innovation Center, University of Alberta, Edmonton, AB T6G1C9, Canada; (J.Z.); (A.C.G.); (R.R.); (R.M.)
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25
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Vamecq J, Papegay B, Nuyens V, Boogaerts J, Leo O, Kruys V. Mitochondrial dysfunction, AMPK activation and peroxisomal metabolism: A coherent scenario for non-canonical 3-methylglutaconic acidurias. Biochimie 2019; 168:53-82. [PMID: 31626852 DOI: 10.1016/j.biochi.2019.10.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 10/10/2019] [Indexed: 12/13/2022]
Abstract
The occurrence of 3-methylglutaconic aciduria (3-MGA) is a well understood phenomenon in leucine oxidation and ketogenesis disorders (primary 3-MGAs). In contrast, its genesis in non-canonical (secondary) 3-MGAs, a growing-up group of disorders encompassing more than a dozen of inherited metabolic diseases, is a mystery still remaining unresolved for three decades. To puzzle out this anthologic problem of metabolism, three clues were considered: (i) the variety of disorders suggests a common cellular target at the cross-road of metabolic and signaling pathways, (ii) the response to leucine loading test only discriminative for primary but not secondary 3-MGAs suggests these latter are disorders of extramitochondrial HMG-CoA metabolism as also attested by their failure to increase 3-hydroxyisovalerate, a mitochondrial metabolite accumulating only in primary 3-MGAs, (iii) the peroxisome is an extramitochondrial site possessing its own pool and displaying metabolism of HMG-CoA, suggesting its possible involvement in producing extramitochondrial 3-methylglutaconate (3-MG). Following these clues provides a unifying common basis to non-canonical 3-MGAs: constitutive mitochondrial dysfunction induces AMPK activation which, by inhibiting early steps in cholesterol and fatty acid syntheses, pipelines cytoplasmic acetyl-CoA to peroxisomes where a rise in HMG-CoA followed by local dehydration and hydrolysis may lead to 3-MGA yield. Additional contributors are considered, notably for 3-MGAs associated with hyperammonemia, and to a lesser extent in CLPB deficiency. Metabolic and signaling itineraries followed by the proposed scenario are essentially sketched, being provided with compelling evidence from the literature coming in their support.
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Affiliation(s)
- Joseph Vamecq
- Inserm, CHU Lille, Univ Lille, Department of Biochemistry and Molecular Biology, Laboratory of Hormonology, Metabolism-Nutrition & Oncology (HMNO), Center of Biology and Pathology (CBP) Pierre-Marie Degand, CHRU Lille, EA 7364 RADEME, University of North France, Lille, France.
| | - Bérengère Papegay
- Laboratory of Experimental Medicine (ULB unit 222), University Hospital Center, Charleroi, (CHU Charleroi), Belgium
| | - Vincent Nuyens
- Laboratory of Experimental Medicine (ULB unit 222), University Hospital Center, Charleroi, (CHU Charleroi), Belgium
| | - Jean Boogaerts
- Laboratory of Experimental Medicine (ULB unit 222), University Hospital Center, Charleroi, (CHU Charleroi), Belgium
| | - Oberdan Leo
- Laboratory of Immunobiology, Department of Molecular Biology, ULB Immunology Research Center (UIRC), Free University of Brussels (ULB), Gosselies, Belgium
| | - Véronique Kruys
- Laboratory of Molecular Biology of the Gene, Department of Molecular Biology, ULB Immunology Research Center (UIRC), Free University of Brussels (ULB), Gosselies, Belgium
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26
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Chollet C, Boutet-Mercey S, Laboureur L, Rincon C, Méjean M, Jouhet J, Fenaille F, Colsch B, Touboul D. Supercritical fluid chromatography coupled to mass spectrometry for lipidomics. JOURNAL OF MASS SPECTROMETRY : JMS 2019; 54:791-801. [PMID: 31652381 DOI: 10.1002/jms.4445] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 09/11/2019] [Accepted: 09/11/2019] [Indexed: 06/10/2023]
Abstract
Supercritical fluid chromatography (SFC) has experienced a particular revival in recent years thanks to the development of robust and efficient commercial systems. Because of its physico-chemical properties, supercritical carbon dioxide (CO2 ) mixed with cosolvents and additives is particularly suitable for SFC to allow the elution of compounds of different polarities and more particularly complex lipids. Hyphenation with mass spectrometry (MS) is increasingly described in the literature but still requires many further developments in order to be as user-friendly as coupling with liquid chromatography. The basic concepts of SFC and MS hyphenation will be first considered. Then a representative example of method development in lipidomics will be introduced. In conclusion, the challenges and future needs in this field of research will be discussed.
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Affiliation(s)
- Céline Chollet
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay, Avenue de la Terrasse, 91190, Gif-sur-Yvette, France
- Service de Pharmacologie et Immuno-Analyse (SPI), Laboratoire d'Etude du Métabolisme des Médicaments, CEA, INRA, Université Paris-Saclay. MetaboHUB, F-91191, Gif-sur-Yvette, France
| | - Stéphanie Boutet-Mercey
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay, Avenue de la Terrasse, 91190, Gif-sur-Yvette, France
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, Versailles, France
| | - Laurent Laboureur
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay, Avenue de la Terrasse, 91190, Gif-sur-Yvette, France
| | - Carlos Rincon
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay, Avenue de la Terrasse, 91190, Gif-sur-Yvette, France
| | - Marie Méjean
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay, Avenue de la Terrasse, 91190, Gif-sur-Yvette, France
| | - Juliette Jouhet
- Univ. Grenoble Alpes, CNRS, INRA, CEA, IRIG-LPCV, 38000, Grenoble, France
| | - François Fenaille
- Service de Pharmacologie et Immuno-Analyse (SPI), Laboratoire d'Etude du Métabolisme des Médicaments, CEA, INRA, Université Paris-Saclay. MetaboHUB, F-91191, Gif-sur-Yvette, France
| | - Benoit Colsch
- Service de Pharmacologie et Immuno-Analyse (SPI), Laboratoire d'Etude du Métabolisme des Médicaments, CEA, INRA, Université Paris-Saclay. MetaboHUB, F-91191, Gif-sur-Yvette, France
| | - David Touboul
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay, Avenue de la Terrasse, 91190, Gif-sur-Yvette, France
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27
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Khrameeva E, Kurochkin I, Bozek K, Giavalisco P, Khaitovich P. Lipidome Evolution in Mammalian Tissues. Mol Biol Evol 2019; 35:1947-1957. [PMID: 29762743 PMCID: PMC6063302 DOI: 10.1093/molbev/msy097] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Lipids are essential structural and functional components of cells. Little is known, however, about the evolution of lipid composition in different tissues. Here, we report a large-scale analysis of the lipidome evolution in six tissues of 32 species representing primates, rodents, and bats. While changes in genes’ sequence and expression accumulate proportionally to the phylogenetic distances, <2% of the lipidome evolves this way. Yet, lipids constituting this 2% cluster in specific functions shared among all tissues. Among species, human show the largest amount of species-specific lipidome differences. Many of the uniquely human lipidome features localize in the brain cortex and cluster in specific pathways implicated in cognitive disorders.
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Affiliation(s)
- Ekaterina Khrameeva
- Center for Data-Intensive Biomedicine and Biotechnology, Skolkovo Institute of Science and Technology, Moscow, Russia.,A.A.Kharkevich, Institute for Information Transmission Problems, Russian Academy of Sciences, Moscow, Russia
| | - Ilia Kurochkin
- Center for Data-Intensive Biomedicine and Biotechnology, Skolkovo Institute of Science and Technology, Moscow, Russia
| | - Katarzyna Bozek
- Biological Physics Theory Unit, Okinawa Institute of Science and Technology, Graduate University, Onna-Son, Kunigami-Gun, Okinawa, Japan
| | - Patrick Giavalisco
- Max Planck Institute of Molecular Plant Physiology, Potsdam, Germany.,Current affiliation: Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Philipp Khaitovich
- Center for Data-Intensive Biomedicine and Biotechnology, Skolkovo Institute of Science and Technology, Moscow, Russia.,Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.,CAS Key Laboratory of Computational Biology, CAS-MPG Partner Institute for Computational Biology, Shanghai, China
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28
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Alteration of mitochondrial membrane inner potential in three Italian patients with megaconial congenital muscular dystrophy carrying new mutations in CHKB gene. Mitochondrion 2019; 47:24-29. [PMID: 30986505 DOI: 10.1016/j.mito.2019.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 02/09/2019] [Accepted: 04/10/2019] [Indexed: 11/20/2022]
Abstract
Congenital Muscular Dystrophies (CMDs) are a heterogeneous group of autosomal recessive disorders presenting at birth with psychomotor delay, cognitive impairment, muscle weakness and hypotonia. Here we described an alteration of mitochondrial inner membrane potential and mitochondrial network in cells derived from Italian patients carrying three novel mutations in CHKB gene, recently associated with "megaconial CMD". On the bases of our findings, we hypothesize that the mitochondrial membrane potential alteration, presumably as a consequence of the altered biosynthesis of phosphatidylcholine, could be responsible for the peculiar morphological aspect of mitochondria in this disease and might be involved in the disease pathogenesis.
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29
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Marelli C, Lamari F, Rainteau D, Lafourcade A, Banneau G, Humbert L, Monin ML, Petit E, Debs R, Castelnovo G, Ollagnon E, Lavie J, Pilliod J, Coupry I, Babin PJ, Guissart C, Benyounes I, Ullmann U, Lesca G, Thauvin-Robinet C, Labauge P, Odent S, Ewenczyk C, Wolf C, Stevanin G, Hajage D, Durr A, Goizet C, Mochel F. Plasma oxysterols: biomarkers for diagnosis and treatment in spastic paraplegia type 5. Brain 2019; 141:72-84. [PMID: 29228183 DOI: 10.1093/brain/awx297] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 09/25/2017] [Indexed: 12/14/2022] Open
Abstract
The hereditary spastic paraplegias are an expanding and heterogeneous group of disorders characterized by spasticity in the lower limbs. Plasma biomarkers are needed to guide the genetic testing of spastic paraplegia. Spastic paraplegia type 5 (SPG5) is an autosomal recessive spastic paraplegia due to mutations in CYP7B1, which encodes a cytochrome P450 7α-hydroxylase implicated in cholesterol and bile acids metabolism. We developed a method based on ultra-performance liquid chromatography electrospray tandem mass spectrometry to validate two plasma 25-hydroxycholesterol (25-OHC) and 27-hydroxycholesterol (27-OHC) as diagnostic biomarkers in a cohort of 21 patients with SPG5. For 14 patients, SPG5 was initially suspected on the basis of genetic analysis, and then confirmed by increased plasma 25-OHC, 27-OHC and their ratio to total cholesterol. For seven patients, the diagnosis was initially based on elevated plasma oxysterol levels and confirmed by the identification of two causal CYP7B1 mutations. The receiver operating characteristic curves analysis showed that 25-OHC, 27-OHC and their ratio to total cholesterol discriminated between SPG5 patients and healthy controls with 100% sensitivity and specificity. Taking advantage of the robustness of these plasma oxysterols, we then conducted a phase II therapeutic trial in 12 patients and tested whether candidate molecules (atorvastatin, chenodeoxycholic acid and resveratrol) can lower plasma oxysterols and improve bile acids profile. The trial consisted of a three-period, three-treatment crossover study and the six different sequences of three treatments were randomized. Using a linear mixed effect regression model with a random intercept, we observed that atorvastatin decreased moderately plasma 27-OHC (∼30%, P < 0.001) but did not change 27-OHC to total cholesterol ratio or 25-OHC levels. We also found an abnormal bile acids profile in SPG5 patients, with significantly decreased total serum bile acids associated with a relative decrease of ursodeoxycholic and lithocholic acids compared to deoxycholic acid. Treatment with chenodeoxycholic acid restored bile acids profile in SPG5 patients. Therefore, the combination of atorvastatin and chenodeoxycholic acid may be worth considering for the treatment of SPG5 patients but the neurological benefit of these metabolic interventions remains to be evaluated in phase III therapeutic trials using clinical, imaging and/or electrophysiological outcome measures with sufficient effect sizes. Overall, our study indicates that plasma 25-OHC and 27-OHC are robust diagnostic biomarkers of SPG5 and shall be used as first-line investigations in any patient with unexplained spastic paraplegia.
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Affiliation(s)
- Cecilia Marelli
- Gui de Chauliac University Hospital, Department of Neurology, Montpellier, France.,Gui de Chauliac University Hospital, Expert Center for Neurogenetic Diseases and Adult Mitochondrial and Metabolic Diseases, Montpellier, France
| | - Foudil Lamari
- APHP, La Pitié-Salpêtrière University Hospital, Department of Biochemistry, Paris, France.,University Pierre and Marie Curie, Neurometabolic Research Group, Paris, France.,APHP, La Pitié-Salpêtrière University Hospital, Reference Center for Adult Neurometabolic Diseases, Paris, France
| | - Dominique Rainteau
- APHP, Hôpital Saint Antoine, Département PM2 Plateforme de Métabolomique, Peptidomique et dosage de Médicaments, Paris, France
| | - Alexandre Lafourcade
- APHP, Hôpital La Pitié-Salpêtrière, Département de Biostatistiques, Santé publique et Information médicale, Centre de Pharmacoépidémiologie (Cephepi), F-75013, Paris, France
| | - Guillaume Banneau
- APHP, La Pitié-Salpêtrière University Hospital, Department of Genetics, Functional Unit of Molecular and Cellular Neurogenetics, Paris, France
| | - Lydie Humbert
- APHP, Hôpital Saint Antoine, Département PM2 Plateforme de Métabolomique, Peptidomique et dosage de Médicaments, Paris, France
| | - Marie-Lorraine Monin
- APHP, La Pitié-Salpêtrière University Hospital, Department of Genetics, Paris, France.,Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France
| | - Elodie Petit
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France
| | - Rabab Debs
- APHP, La Pitié-Salpêtrière University Hospital, Department of Neurology, Paris, France
| | | | - Elisabeth Ollagnon
- La Croix-Rousse University Hospital, Department of Genetics, Lyon, France
| | - Julie Lavie
- Laboratoire MRGM, INSERM U1211, Univ Bordeaux, Bordeaux, France
| | - Julie Pilliod
- Laboratoire MRGM, INSERM U1211, Univ Bordeaux, Bordeaux, France
| | - Isabelle Coupry
- Laboratoire MRGM, INSERM U1211, Univ Bordeaux, Bordeaux, France
| | - Patrick J Babin
- Laboratoire MRGM, INSERM U1211, Univ Bordeaux, Bordeaux, France
| | - Claire Guissart
- Institut Universitaire de Recherche Clinique, Laboratoire de Génétique Moléculaire, Montpellier, France
| | - Imen Benyounes
- APHP, La Pitié-Salpêtrière University Hospital, Department of Biochemistry, Paris, France
| | - Urielle Ullmann
- Institut de Pathologie et Génétique, Centre de Génétique Humaine, Gosselies, Belgium
| | - Gaetan Lesca
- Lyon University Hospital, Department of Medical Genetics, Lyon, France
| | | | - Pierre Labauge
- Gui de Chauliac University Hospital, Department of Neurology, Montpellier, France.,Gui de Chauliac University Hospital, Reference Center for Adult Leukodystrophy, Montpellier, France
| | - Sylvie Odent
- Rennes University Hospital, Department of Clinical Genetics, Rennes, France
| | - Claire Ewenczyk
- APHP, La Pitié-Salpêtrière University Hospital, Department of Genetics, Paris, France.,Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France
| | - Claude Wolf
- APHP, Hôpital Saint Antoine, Département PM2 Plateforme de Métabolomique, Peptidomique et dosage de Médicaments, Paris, France
| | - Giovanni Stevanin
- APHP, La Pitié-Salpêtrière University Hospital, Department of Genetics, Paris, France.,Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France.,Ecole Pratique des Hautes Etudes, PSL Research University, Neurogenetic lab, Paris, France
| | - David Hajage
- APHP, Hôpital La Pitié-Salpêtrière, Département de Biostatistiques, Santé publique et Information médicale, Centre de Pharmacoépidémiologie (Cephepi), F-75013, Paris, France.,Paris Diderot University, Sorbonne Paris Cité, UMR 1123 ECEVE, Paris, France
| | - Alexandra Durr
- APHP, La Pitié-Salpêtrière University Hospital, Department of Genetics, Paris, France.,Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France.,APHP, La Pitié-Salpêtrière University Hospital, Neurogenetic Reference Center, Paris, France
| | - Cyril Goizet
- Laboratoire MRGM, INSERM U1211, Univ Bordeaux, Bordeaux, France.,Bordeaux University Hospital, Department of Medical Genetics, Bordeaux, France.,Bordeaux University Hospital, Neurogenetic Reference Center, Bordeaux, France
| | - Fanny Mochel
- APHP, La Pitié-Salpêtrière University Hospital, Reference Center for Adult Neurometabolic Diseases, Paris, France.,APHP, La Pitié-Salpêtrière University Hospital, Department of Genetics, Paris, France.,Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France
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30
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Yalnızoǧlu D, Özgül RK, Oǧuz KK, Özer B, Yücel-Yılmaz D, Gürbüz B, Serdaroǧlu E, Erol İ, Topçu M, Dursun A. Expanding the phenotype of phospholipid remodelling disease due to MBOAT7 gene defect. J Inherit Metab Dis 2019; 42:381-388. [PMID: 30701556 DOI: 10.1002/jimd.12016] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 10/26/2018] [Accepted: 11/02/2018] [Indexed: 11/07/2022]
Abstract
MBOAT7 gene codes O-acyltransferase domain containing seven proteins which is one of four enzymes involved in remodeling of phosphoinositol phosphate (PIP) in LANDs cycle. We present clinical, neuroimaging, and genetic findings of 12 patients from 7 families with MBOAT7 gene defect, a recently defined novel phospholipid remodelling disease. To the best of our knowledge, our case series is the second report on patients with MBOAT7 gene defect. The patients present with global developmental delay particularly in speech and language skills, intellectual disability, stereotypical behavior, ataxic gait, early onset epilepsy with well response to medical treatment, strabismus and similar facial features. Common neuroimaging findings of the patients were folium dysgenesis of the cerebellum with a particular appearance, mild-to-moderate cerebellar atrophy, T2 hyperintensity of bilateral globus pallidius and dentate nuclei, enlarged perivascular areas, and mild thinning of the corpus callosum. Genome-wide genotyping and exome sequencing identified five different types of homozygous mutations in the MBOAT7 gene in all seven families which are p.Arg87*, p.Leu227ProfsX65, p.Gln376Lys, p.Trp426*, and chr19:54.666.173-54.677.766/11594 bp del. We conclude that clinical and neuroimaging findings of MBOAT7 gene defect may suggest the diagnosis and guide genetic tests.
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Affiliation(s)
- Dilek Yalnızoǧlu
- Department of Pediatrics, Division of Neurology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - R Köksal Özgül
- Hacettepe University Institute of Child Health, Ankara, Turkey
| | - Kader K Oǧuz
- Department of Radiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Buǧra Özer
- Advanced Genomics and Bioinformatics Research Center (IGBAM), BILGEM, The Scientific and Technological Research Council of Turkey (TUBITAK), Kocaeli, Turkey
| | | | - Berrak Gürbüz
- Department of Pediatrics, Division of Metabolism, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Esra Serdaroǧlu
- Department of Pediatrics, Division of Neurology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - İlknur Erol
- Department of Pediatrics, Division of Neurology, Baskent University Faculty of Medicine, Adana, Turkey
| | - Meral Topçu
- Department of Pediatrics, Division of Neurology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Ali Dursun
- Department of Pediatrics, Division of Metabolism, Hacettepe University Faculty of Medicine, Ankara, Turkey
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31
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Sphingolipid-dependent Dscam sorting regulates axon segregation. Nat Commun 2019; 10:813. [PMID: 30778062 PMCID: PMC6379420 DOI: 10.1038/s41467-019-08765-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 01/17/2019] [Indexed: 12/22/2022] Open
Abstract
Neurons are highly polarized cells with distinct protein compositions in axonal and dendritic compartments. Cellular mechanisms controlling polarized protein sorting have been described for mature nervous system but little is known about the segregation in newly differentiated neurons. In a forward genetic screen for regulators of Drosophila brain circuit development, we identified mutations in SPT, an evolutionary conserved enzyme in sphingolipid biosynthesis. Here we show that reduced levels of sphingolipids in SPT mutants cause axonal morphology defects similar to loss of cell recognition molecule Dscam. Loss- and gain-of-function studies show that neuronal sphingolipids are critical to prevent aggregation of axonal and dendritic Dscam isoforms, thereby ensuring precise Dscam localization to support axon branch segregation. Furthermore, SPT mutations causing neurodegenerative HSAN-I disorder in humans also result in formation of stable Dscam aggregates and axonal branch phenotypes in Drosophila neurons, indicating a causal link between developmental protein sorting defects and neuronal dysfunction. Little is known about the initial segregation of axonal and dendritic proteins during the differentiation of newly generated neurons. Here authors use a forward genetic screen to identify the role of sphingolipids in regulating the sub-cellular distribution of Dscam for neuronal patterning in Drosophila Mushroom Bodies
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32
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Mochel F. Lipids and synaptic functions. J Inherit Metab Dis 2018; 41:1117-1122. [PMID: 29869164 DOI: 10.1007/s10545-018-0204-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/16/2018] [Accepted: 05/18/2018] [Indexed: 10/14/2022]
Abstract
Synaptic functions have long been thought to be driven by proteins, especially the SNARE complex, contrasting with a relatively passive role for lipids constituting cell membranes. It is now clear that not only lipids, i.e. glycerophospholipids, sphingolipids and sterols, play a determinant role in the dynamics of synaptic membranes but they also actively contribute to the endocytosis and exocytosis of synaptic vesicles in conjunction with synaptic proteins. On the other hand, a growing number of inborn errors of metabolism affecting the nervous system have been related to defects in the synthesis and remodelling of fatty acids, phospholipids and sphingolipids. Alterations of the metabolism of these lipids would be expected to affect the dynamics of synaptic membranes and synaptic vesicles. Still, only few examples are currently documented. It remains to be determined to which extent the pathophysiology of disorders of complex lipids biosynthesis and remodelling share common pathogenic mechanisms with the more traditional synaptopathies.
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Affiliation(s)
- Fanny Mochel
- Sorbonne Université, UPMC-Paris 6, UMR S 1127 and Inserm U 1127, and CNRS UMR 7225, and ICM, F-75013, Paris, France.
- Sorbonne Université, GRC no. 13, Neurométabolisme, Paris, France.
- Department of Genetics and Reference Centre for Adult Neurometabolic Diseases, AP-HP, La Pitié-Salpêtriere University Hospital, Paris, France.
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33
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Malekkou A, Samarani M, Drousiotou A, Votsi C, Sonnino S, Pantzaris M, Chiricozzi E, Zamba-Papanicolaou E, Aureli M, Loberto N, Christodoulou K. Biochemical Characterization of the GBA2 c.1780G>C Missense Mutation in Lymphoblastoid Cells from Patients with Spastic Ataxia. Int J Mol Sci 2018; 19:ijms19103099. [PMID: 30308956 PMCID: PMC6213336 DOI: 10.3390/ijms19103099] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/02/2018] [Accepted: 10/08/2018] [Indexed: 12/29/2022] Open
Abstract
The GBA2 gene encodes the non-lysosomal glucosylceramidase (NLGase), an enzyme that catalyzes the conversion of glucosylceramide (GlcCer) to ceramide and glucose. Mutations in GBA2 have been associated with the development of neurological disorders such as autosomal recessive cerebellar ataxia, hereditary spastic paraplegia, and Marinesco-Sjogren-Like Syndrome. Our group has previously identified the GBA2 c.1780G>C [p.Asp594His] missense mutation, in a Cypriot consanguineous family with spastic ataxia. In this study, we carried out a biochemical characterization of lymphoblastoid cell lines (LCLs) derived from three patients of this family. We found that the mutation strongly reduce NLGase activity both intracellularly and at the plasma membrane level. Additionally, we observed a two-fold increase of GlcCer content in LCLs derived from patients compared to controls, with the C16 lipid being the most abundant GlcCer species. Moreover, we showed that there is an apparent compensatory effect between NLGase and the lysosomal glucosylceramidase (GCase), since we found that the activity of GCase was three-fold higher in LCLs derived from patients compared to controls. We conclude that the c.1780G>C mutation results in NLGase loss of function with abolishment of the enzymatic activity and accumulation of GlcCer accompanied by a compensatory increase in GCase.
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Affiliation(s)
- Anna Malekkou
- Biochemical Genetics Department, The Cyprus Institute of Neurology and Genetics, Nicosia 1683, Cyprus.
- Cyprus School of Molecular Medicine, Nicosia 1683, Cyprus.
| | - Maura Samarani
- Department of Medical Biotechnology and Translational Medicine, University of Milano, 20122 Milano, Italy.
| | - Anthi Drousiotou
- Biochemical Genetics Department, The Cyprus Institute of Neurology and Genetics, Nicosia 1683, Cyprus.
- Cyprus School of Molecular Medicine, Nicosia 1683, Cyprus.
| | - Christina Votsi
- Cyprus School of Molecular Medicine, Nicosia 1683, Cyprus.
- Neurogenetics Department, The Cyprus Institute of Neurology and Genetics, Nicosia 1683, Cyprus.
| | - Sandro Sonnino
- Department of Medical Biotechnology and Translational Medicine, University of Milano, 20122 Milano, Italy.
| | - Marios Pantzaris
- Cyprus School of Molecular Medicine, Nicosia 1683, Cyprus.
- Neurology Clinic C, The Cyprus Institute of Neurology and Genetics, Nicosia 1683, Cyprus.
| | - Elena Chiricozzi
- Department of Medical Biotechnology and Translational Medicine, University of Milano, 20122 Milano, Italy.
| | - Eleni Zamba-Papanicolaou
- Cyprus School of Molecular Medicine, Nicosia 1683, Cyprus.
- Neurology Clinic D, The Cyprus Institute of Neurology and Genetics, Nicosia 1683, Cyprus.
| | - Massimo Aureli
- Department of Medical Biotechnology and Translational Medicine, University of Milano, 20122 Milano, Italy.
| | - Nicoletta Loberto
- Department of Medical Biotechnology and Translational Medicine, University of Milano, 20122 Milano, Italy.
| | - Kyproula Christodoulou
- Cyprus School of Molecular Medicine, Nicosia 1683, Cyprus.
- Neurogenetics Department, The Cyprus Institute of Neurology and Genetics, Nicosia 1683, Cyprus.
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34
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Joshi A, Shaikh M, Singh S, Rajendran A, Mhetre A, Kamat SS. Biochemical characterization of the PHARC-associated serine hydrolase ABHD12 reveals its preference for very-long-chain lipids. J Biol Chem 2018; 293:16953-16963. [PMID: 30237167 PMCID: PMC6217928 DOI: 10.1074/jbc.ra118.005640] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 09/17/2018] [Indexed: 01/06/2023] Open
Abstract
Polyneuropathy, hearing loss, ataxia, retinitis pigmentosa, and cataract (PHARC) is a rare genetic human neurological disorder caused by null mutations to the Abhd12 gene, which encodes the integral membrane serine hydrolase enzyme ABHD12. Although the role that ABHD12 plays in PHARC is understood, the thorough biochemical characterization of ABHD12 is lacking. Here, we report the facile synthesis of mono-1-(fatty)acyl-glycerol lipids of varying chain lengths and unsaturation and use this lipid substrate library to biochemically characterize recombinant mammalian ABHD12. The substrate profiling study for ABHD12 suggested that this enzyme requires glycosylation for optimal activity and that it has a strong preference for very-long-chain lipid substrates. We further validated this substrate profile against brain membrane lysates generated from WT and ABHD12 knockout mice. Finally, using cellular organelle fractionation and immunofluorescence assays, we show that mammalian ABHD12 is enriched on the endoplasmic reticulum membrane, where most of the very-long-chain fatty acids are biosynthesized in cells. Taken together, our findings provide a biochemical explanation for why very-long-chain lipids (such as lysophosphatidylserine lipids) accumulate in the brains of ABHD12 knockout mice, which is a murine model of PHARC.
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Affiliation(s)
| | - Minhaj Shaikh
- Chemistry, Indian Institute of Science Education and Research Pune, Pune 411008, India
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35
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Araújo ARD, Melo T, Maciel EA, Pereira C, Morais CM, Santinha DR, Tavares JF, Oliveira H, Jurado AS, Costa V, Domingues P, Domingues MRM, Santos MAS. Errors in protein synthesis increase the level of saturated fatty acids and affect the overall lipid profiles of yeast. PLoS One 2018; 13:e0202402. [PMID: 30148852 PMCID: PMC6110467 DOI: 10.1371/journal.pone.0202402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 08/02/2018] [Indexed: 12/03/2022] Open
Abstract
The occurrence of protein synthesis errors (mistranslation) above the typical mean mistranslation level of 10−4 is mostly deleterious to yeast, zebrafish and mammal cells. Previous yeast studies have shown that mistranslation affects fitness and deregulates genes related to lipid metabolism, but there is no experimental proof that such errors alter yeast lipid profiles. We engineered yeast strains to misincorporate serine at alanine and glycine sites on a global scale and evaluated the putative effects on the lipidome. Lipids from whole cells were extracted and analysed by thin layer chromatography (TLC), liquid chromatography-mass spectrometry(LC-MS) and gas chromatography (GC). Oxidative damage, fatty acid desaturation and membrane fluidity changes were screened to identify putative alterations in lipid profiles in both logarithmic (fermentative) and post-diauxic shift (respiratory) phases. There were alterations in several lipid classes, namely lyso-phosphatidylcholine, phosphatidic acid, phosphatidylethanolamine, phosphatidylinositol, phosphatidylserine, and triglyceride, and in the fatty acid profiles, namely C16:1, C16:0, C18:1 and C18:0. Overall, the relative content of lipid species with saturated FA increased in detriment of those with unsaturated fatty acids. The expression of the OLE1 mRNA was deregulated, but phospholipid fluidity changes were not observed. These data expand current knowledge of mistranslation biology and highlight its putative roles in human diseases.
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Affiliation(s)
- Ana Rita D. Araújo
- Department of Medical Sciences and Institute of Biomedicine–iBiMED, University of Aveiro, Aveiro, Portugal
- Mass Spectrometry Center, Department of Chemistry, QOPNA, University of Aveiro, Aveiro, Portugal
| | - Tânia Melo
- Mass Spectrometry Center, Department of Chemistry, QOPNA, University of Aveiro, Aveiro, Portugal
| | - Elisabete A. Maciel
- Mass Spectrometry Center, Department of Chemistry, QOPNA, University of Aveiro, Aveiro, Portugal
- Department of Biology, CESAM, University of Aveiro, Aveiro, Portugal
| | - Clara Pereira
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC, Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Departamento de Biologia Molecular, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Catarina M. Morais
- CNC, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Deolinda R. Santinha
- Mass Spectrometry Center, Department of Chemistry, QOPNA, University of Aveiro, Aveiro, Portugal
| | - Joana F. Tavares
- Department of Medical Sciences and Institute of Biomedicine–iBiMED, University of Aveiro, Aveiro, Portugal
| | - Helena Oliveira
- Laboratory of Biotechnology and Cytomics, Department of Biology, CESAM, University of Aveiro, Aveiro, Portugal
| | - Amália S. Jurado
- CNC, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Vítor Costa
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC, Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
- Departamento de Biologia Molecular, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Pedro Domingues
- Mass Spectrometry Center, Department of Chemistry, QOPNA, University of Aveiro, Aveiro, Portugal
| | - Maria Rosário M. Domingues
- Mass Spectrometry Center, Department of Chemistry, QOPNA, University of Aveiro, Aveiro, Portugal
- * E-mail: (MASS); (MRMD)
| | - Manuel A. S. Santos
- Department of Medical Sciences and Institute of Biomedicine–iBiMED, University of Aveiro, Aveiro, Portugal
- * E-mail: (MASS); (MRMD)
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Dong S, Zhang S, Chen Z, Zhang R, Tian L, Cheng L, Shang F, Sun J. Berberine Could Ameliorate Cardiac Dysfunction via Interfering Myocardial Lipidomic Profiles in the Rat Model of Diabetic Cardiomyopathy. Front Physiol 2018; 9:1042. [PMID: 30131709 PMCID: PMC6090155 DOI: 10.3389/fphys.2018.01042] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 07/12/2018] [Indexed: 12/11/2022] Open
Abstract
Background: Diabetic cardiomyopathy (DCM) is considered to be a distinct clinical entity independent of concomitant macro- and microvascular disorders, which is initiated partly by disturbances in energy substrates. This study was to observe the dynamic modulations of berberine in DCM rats and explore the changes of lipidomic profiles of myocardial tissue. Methods: Sprague-Dawley (SD) rats were fed high-sucrose and high-fat diet (HSHFD) for totally 22 weeks and intraperitoneally (i.p.) injected with 30 mg/kg of streptozotocin (STZ) at the fifth week to induce DCM. Seventy-two hours after STZ injection, the rats were orally given with berberine at 10, 30 mg/kg and metformin at 200 mg/kg, respectively. Dynamic changes of cardiac function, heart mass ratios and blood lipids were observed at f 4, 10, 16, and 22, respectively. Furthermore, lipid metabolites in myocardial tissue at week 16 were profiled by the ultra-high-performance liquid chromatography coupled to a quadruple time of flight mass spectrometer (UPLC/Q-TOF/MS) approach. Results: Berberine could protect against cardiac diastolic and systolic dysfunctions, as well as cardiac hypertrophy, and the most effective duration is with 16-week of administration. Meanwhile, 17 potential biomarkers of phosphatidylcholines (PCs), phosphatidylethanolamines (PEs) and sphingolipids (SMs) of DCM induced by HSFD/STZ were identified. The perturbations of lipidomic profiles could be partly reversed with berberine intervention, i.e., PC (16:0/20:4), PC (18:2/0:0), PC (18:0/18:2), PC (18:0/22:5), PC (20:4/0:0), PC (20:4/18:0), PC (20:4/18:1), PC (20:4/20:2), PE (18:2/0:0), and SM (d18:0/16:0). Conclusions: These results indicated a close relationship between PCs, PEs and SMs and cardiac damage mechanisms during development of DCM. The therapeutic effects of berberine on DCM are partly caused by interferences with PCs, PEs, and SMs metabolisms.
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Affiliation(s)
- Shifen Dong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Shuofeng Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Zhirong Chen
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Rong Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Linyue Tian
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Long Cheng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Fei Shang
- Department of Pharmacology, Analysis and Testing Center, Beijing University of Chemical Technology, Beijing, China
| | - Jianning Sun
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
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Maas RR, Iwanicka‐Pronicka K, Kalkan Ucar S, Alhaddad B, AlSayed M, Al‐Owain MA, Al‐Zaidan HI, Balasubramaniam S, Barić I, Bubshait DK, Burlina A, Christodoulou J, Chung WK, Colombo R, Darin N, Freisinger P, Garcia Silva MT, Grunewald S, Haack TB, van Hasselt PM, Hikmat O, Hörster F, Isohanni P, Ramzan K, Kovacs‐Nagy R, Krumina Z, Martin‐Hernandez E, Mayr JA, McClean P, De Meirleir L, Naess K, Ngu LH, Pajdowska M, Rahman S, Riordan G, Riley L, Roeben B, Rutsch F, Santer R, Schiff M, Seders M, Sequeira S, Sperl W, Staufner C, Synofzik M, Taylor RW, Trubicka J, Tsiakas K, Unal O, Wassmer E, Wedatilake Y, Wolff T, Prokisch H, Morava E, Pronicka E, Wevers RA, de Brouwer AP, Wortmann SB. Progressive deafness-dystonia due to SERAC1 mutations: A study of 67 cases. Ann Neurol 2017; 82:1004-1015. [PMID: 29205472 PMCID: PMC5847115 DOI: 10.1002/ana.25110] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 11/13/2017] [Accepted: 11/26/2017] [Indexed: 11/12/2022]
Abstract
OBJECTIVE 3-Methylglutaconic aciduria, dystonia-deafness, hepatopathy, encephalopathy, Leigh-like syndrome (MEGDHEL) syndrome is caused by biallelic variants in SERAC1. METHODS This multicenter study addressed the course of disease for each organ system. Metabolic, neuroradiological, and genetic findings are reported. RESULTS Sixty-seven individuals (39 previously unreported) from 59 families were included (age range = 5 days-33.4 years, median age = 9 years). A total of 41 different SERAC1 variants were identified, including 20 that have not been reported before. With the exception of 2 families with a milder phenotype, all affected individuals showed a strikingly homogeneous phenotype and time course. Severe, reversible neonatal liver dysfunction and hypoglycemia were seen in >40% of all cases. Starting at a median age of 6 months, muscular hypotonia (91%) was seen, followed by progressive spasticity (82%, median onset = 15 months) and dystonia (82%, 18 months). The majority of affected individuals never learned to walk (68%). Seventy-nine percent suffered hearing loss, 58% never learned to speak, and nearly all had significant intellectual disability (88%). Magnetic resonance imaging features were accordingly homogenous, with bilateral basal ganglia involvement (98%); the characteristic "putaminal eye" was seen in 53%. The urinary marker 3-methylglutaconic aciduria was present in virtually all patients (98%). Supportive treatment focused on spasticity and drooling, and was effective in the individuals treated; hearing aids or cochlear implants did not improve communication skills. INTERPRETATION MEGDHEL syndrome is a progressive deafness-dystonia syndrome with frequent and reversible neonatal liver involvement and a strikingly homogenous course of disease. Ann Neurol 2017;82:1004-1015.
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Affiliation(s)
- Roeltje R. Maas
- Translational Metabolic Laboratory, Department of Laboratory MedicineRadboud University Medical CenterNijmegenthe Netherlands
| | | | - Sema Kalkan Ucar
- Division of Metabolic Disease, Ege University Medical Faculty, Department of PediatricsIzmirTurkey
| | - Bader Alhaddad
- Institute of Human GeneticsTechnische UniversitätMünchenMunichGermany
| | - Moeenaldeen AlSayed
- Department of GeneticsKing Faisal Specialist Hospital and Research CenterRiyadhSaudi Arabia
- Department of Anatomy and Cell BiologyCollege of Medicine, Alfaisal UniversityRiyadhSaudi Arabia
| | - Mohammed A. Al‐Owain
- Department of GeneticsKing Faisal Specialist Hospital and Research CenterRiyadhSaudi Arabia
- Department of Anatomy and Cell BiologyCollege of Medicine, Alfaisal UniversityRiyadhSaudi Arabia
| | - Hamad I. Al‐Zaidan
- Department of GeneticsKing Faisal Specialist Hospital and Research CenterRiyadhSaudi Arabia
- Department of Anatomy and Cell BiologyCollege of Medicine, Alfaisal UniversityRiyadhSaudi Arabia
| | - Shanti Balasubramaniam
- Western Sydney Genetics Program, Children's Hospital at Westmead, SydneyNew South WalesAustralia
- Discipline of Genetic Medicine & Paediatrics and Child Health, University of SydneySydneyNew South WalesAustralia
| | - Ivo Barić
- Department of PediatricsUniversity Hospital CenterZagrebCroatia
- School of Medicine, University of ZagrebZagrebCroatia
| | - Dalal K. Bubshait
- Department of Pediatrics, College of MedicineImam Abdulrahman Bin Faisal UniversityDammamSaudi Arabia
| | - Alberto Burlina
- Division of Inherited Metabolic Diseases, Department of PediatricsUniversity Hospital of PaduaPaduaItaly
| | - John Christodoulou
- Neurodevelopmental Genomics Research Group, Murdoch Children's Research Institute, and Department of PaediatricsMelbourne Medical School, University of MelbourneMelbourneVictoriaAustralia
- Genetic Metabolic Disorders Research Unit and Western Sydney Genetics Program, Children's Hospital at WestmeadSydneyNew South WalesAustralia
- Discipline of Child and Adolescent Health and Genetic Medicine, Sydney Medical School, University of SydneySydneyNew South WalesAustralia
| | - Wendy K. Chung
- Departments of Pediatrics and MedicineColumbia UniversityNew YorkNY
| | - Roberto Colombo
- Institute of Clinical Biochemistry, Faculty of Medicine, Catholic University of the Sacred HeartRomeItaly
- Center for the Study of Rare Hereditary Diseases, Niguarda Ca' Granda Metropolitan HospitalMilanItaly
| | - Niklas Darin
- Department of PediatricsInstitute of Clinical Sciences, University of Gothenburg, Queen Silvia's Children's HospitalGothenburgSweden
| | | | - Maria Teresa Garcia Silva
- Inborn Errors of Metabolism and Mitochondrial Disease Unit“12 de Octubre” University Hospital, Avenida de Cordoba sn, 28041 Madrid, Spain. Rare Diseases Biomedical Research Centre (CIBERER)MadridSpain
- Complutense UniversityMadridSpain
| | - Stephanie Grunewald
- Metabolic Medicine DepartmentGreat Ormond Street Hospital for Children National Health Service Foundation Trust, University College London Institute of Child HealthLondonUnited Kingdom
| | - Tobias B. Haack
- Institute of Human GeneticsTechnische UniversitätMünchenMunichGermany
- Institute of Medical Genetics and Applied GenomicsTübingenGermany
| | - Peter M. van Hasselt
- Wilhelmina Children's Hospital Utrecht, University Medical Center UtrechtUtrechtthe Netherlands
| | - Omar Hikmat
- Department of PediatricsHaukeland University HospitalBergenNorway
- Department of Clinical Medicine (K1)University of BergenBergenNorway
| | - Friederike Hörster
- Department of General Pediatrics, Division of Neuropediatrics and Pediatric Metabolic MedicineUniversity Hospital HeidelbergHeidelbergGermany
| | - Pirjo Isohanni
- Children's Hospital, University of Helsinki and Helsinki University HospitalHelsinkiFinland
- Research Programs Unit, Molecular Neurology, Biomedicum Helsinki, University of HelsinkiHelsinkiFinland
| | - Khushnooda Ramzan
- Department of GeneticsKing Faisal Specialist Hospital and Research CenterRiyadhSaudi Arabia
- Department of Anatomy and Cell BiologyCollege of Medicine, Alfaisal UniversityRiyadhSaudi Arabia
| | - Reka Kovacs‐Nagy
- Institute of Human GeneticsTechnische UniversitätMünchenMunichGermany
| | - Zita Krumina
- Department of Biology and MicrobiologyRiga Stradin's UniversityRigaLatvia
| | - Elena Martin‐Hernandez
- Inborn Errors of Metabolism and Mitochondrial Disease Unit“12 de Octubre” University Hospital, Avenida de Cordoba sn, 28041 Madrid, Spain. Rare Diseases Biomedical Research Centre (CIBERER)MadridSpain
- Complutense UniversityMadridSpain
| | - Johannes A. Mayr
- Department of PediatricsSalzburg State Hospitals and Paracelsus Medical UniversitySalzburgAustria
| | - Patricia McClean
- Leeds Teaching Hospitals National Health Service TrustLeedsUnited Kingdom
| | | | - Karin Naess
- Department of Pediatric NeurologyKarolinska University HospitalStockholmSweden
| | - Lock H. Ngu
- Division of Clinical Genetics, Department of GeneticsKuala Lumpur HospitalKuala LumpurMalaysia
| | - Magdalena Pajdowska
- Department of Clinical Biochemistry, Radioimmunology, and Experimental MedicineChildren's Memorial Health InstituteWarsawPoland
| | - Shamima Rahman
- University College London Great Ormond Street Institute of Child HealthLondonUnited Kingdom
| | - Gillian Riordan
- Department of Pediatric NeurologyRed Cross War Memorial Children's HospitalCape TownSouth Africa
| | - Lisa Riley
- Genetic Metabolic Disorders Research Unit and Western Sydney Genetics Program, Children's Hospital at WestmeadSydneyNew South WalesAustralia
- Discipline of Child and Adolescent Health and Genetic Medicine, Sydney Medical School, University of SydneySydneyNew South WalesAustralia
| | - Benjamin Roeben
- Department of NeurodegenerationHertie Institute for Clinical Brain Research, University of TübingenTübingenGermany
- German Center for Neurodegenerative Diseases (DZNE)TübingenGermany
| | - Frank Rutsch
- Department of General PediatricsMünster University Children's HospitalMünsterGermany
| | - Rene Santer
- Department of PediatricsUniversity Medical Center EppendorfHamburgGermany
| | - Manuel Schiff
- Reference Center for Inherited Metabolic Diseases, AP‐HP, Robert Debré Hospital, University Paris Diderot‐Sorbonne Paris Cité, Paris, France AND INSERM U1141ParisFrance
| | - Martine Seders
- Department of Human GeneticsRadboud University Medical CenterNijmegenthe Netherlands
| | | | - Wolfgang Sperl
- Department of PediatricsSalzburg State Hospitals and Paracelsus Medical UniversitySalzburgAustria
| | - Christian Staufner
- Department of General Pediatrics, Division of Neuropediatrics and Pediatric Metabolic MedicineUniversity Hospital HeidelbergHeidelbergGermany
| | - Matthis Synofzik
- Department of NeurodegenerationHertie Institute for Clinical Brain Research, University of TübingenTübingenGermany
- German Center for Neurodegenerative Diseases (DZNE)TübingenGermany
| | - Robert W. Taylor
- Wellcome Centre for Mitochondrial ResearchInstitute of Neuroscience, The Medical School, Newcastle UniversityNewcastle upon TyneUnited Kingdom
| | - Joanna Trubicka
- Department of Medical GeneticsChildren's Memorial Health InstituteWarsawPoland
| | | | - Ozlem Unal
- Division of Metabolic DiseasesHacettepe University Children's HospitalAnkaraTurkey
| | | | - Yehani Wedatilake
- University College London Great Ormond Street Institute of Child HealthLondonUnited Kingdom
| | - Toni Wolff
- Nottingham University Hospitals National Health Service Trust, Nottingham Children's HospitalNottinghamUnited Kingdom
| | - Holger Prokisch
- Institute of Human GeneticsTechnische UniversitätMünchenMunichGermany
- Institute of Human Genetics, Helmholtz Center MunichNeuherbergGermany
| | - Eva Morava
- Hayward Genetics Center and Department of PediatricsTulane University Medical SchoolNew OrleansLA
| | - Ewa Pronicka
- Department of Pediatrics, Nutrition and Metabolic DiseasesChildren's Memorial Health InstituteWarsawPoland
| | - Ron A. Wevers
- Translational Metabolic Laboratory, Department of Laboratory MedicineRadboud University Medical CenterNijmegenthe Netherlands
| | - Arjan P. de Brouwer
- Department of Human GeneticsRadboud University Medical CenterNijmegenthe Netherlands
- Donders Institute for Brain, Cognition, and Behavior, Radboud University Medical CenterNijmegenthe Netherlands
| | - Saskia B. Wortmann
- Institute of Human GeneticsTechnische UniversitätMünchenMunichGermany
- Department of PediatricsSalzburg State Hospitals and Paracelsus Medical UniversitySalzburgAustria
- Institute of Human Genetics, Helmholtz Center MunichNeuherbergGermany
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Dard R, Meyniel C, Touitou V, Stevanin G, Lamari F, Durr A, Ewenczyk C, Mochel F. Mutations in DDHD1 , encoding a phospholipase A1, is a novel cause of retinopathy and neurodegeneration with brain iron accumulation. Eur J Med Genet 2017; 60:639-642. [DOI: 10.1016/j.ejmg.2017.08.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 08/03/2017] [Accepted: 08/11/2017] [Indexed: 12/22/2022]
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Garali I, Adanyeguh IM, Ichou F, Perlbarg V, Seyer A, Colsch B, Moszer I, Guillemot V, Durr A, Mochel F, Tenenhaus A. A strategy for multimodal data integration: application to biomarkers identification in spinocerebellar ataxia. Brief Bioinform 2017; 19:1356-1369. [DOI: 10.1093/bib/bbx060] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Indexed: 11/14/2022] Open
Affiliation(s)
- Imene Garali
- Bioinformatics and Biostatistics Core Facility of the Brain and Spine Institute, La Pitié-Salpêtriére Hospital, Paris, France
| | | | - Farid Ichou
- ICANalytics department, institute of cardiometabolism and nutrition, Paris, France
| | - Vincent Perlbarg
- Bioinformatics and Biostatistics Core Facility of the Brain and Spine Institute, La Pitié-Salpêtriére Hospital, Paris, France
| | - Alexandre Seyer
- SpectMet platform of the MedDay Pharmaceuticals company, Paris, France
| | | | - Ivan Moszer
- Bioinformatics and Biostatistics Core Facility of the Brain and Spine Institute, La Pitié-Salpêtriére Hospital, Paris, France
| | - Vincent Guillemot
- Institut Pasteur, Statistical Genetics group, Bioinformatics/Biostatistics Core Facility
| | | | - Fanny Mochel
- University Pierre and Marie Curie (UPMC) and the Pitié-Salpêtriére University Hospital
| | - Arthur Tenenhaus
- Bioinformatics and Biostatistics Core Facility of the Brain and Spine Institute, La Pitié-Salpêtriére Hospital, Paris, France
- L2S Laboratory at CentraleSupélec, France
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Johari M, Arumilli M, Palmio J, Savarese M, Tasca G, Mirabella M, Sandholm N, Lohi H, Hackman P, Udd B. Association study reveals novel risk loci for sporadic inclusion body myositis. Eur J Neurol 2017; 24:572-577. [PMID: 28233382 DOI: 10.1111/ene.13244] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 01/04/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND PURPOSE The aim was to identify potential genetic risk factors associated with sporadic inclusion body myositis (sIBM). METHODS An association based case-control approach was utilized on whole exome sequencing data of 30 Finnish sIBM patients and a control cohort (n = 193). A separate Italian cohort of sIBM patients (n = 12) was used for evaluation of the results. RESULTS Seven single nucleotide polymorphisms were identified in five genes that have a considerably higher observed frequency in Finnish sIBM patients compared to the control population, and the previous association of the genetic human leukocyte antigen region was confirmed. CONCLUSIONS All seven identified variants could individually or in combination increase the susceptibility for sIBM.
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Affiliation(s)
- M Johari
- Folkhälsan Institute of Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - M Arumilli
- Folkhälsan Institute of Genetics, Medicum, University of Helsinki, Helsinki, Finland.,Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland.,Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - J Palmio
- Neuromuscular Research Center, Tampere University and University Hospital, Tampere, Finland
| | - M Savarese
- Folkhälsan Institute of Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - G Tasca
- Institute of Neurology, Policlinico 'A. Gemelli' Foundation University Hospital, Rome, Italy
| | - M Mirabella
- Institute of Neurology, Catholic University School of Medicine, Rome, Italy
| | - N Sandholm
- Folkhälsan Institute of Genetics, Medicum, University of Helsinki, Helsinki, Finland.,Abdominal Center Nephrology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Research Program Unit, Diabetes and Obesity, University of Helsinki, Helsinki, Finland
| | - H Lohi
- Folkhälsan Institute of Genetics, Medicum, University of Helsinki, Helsinki, Finland.,Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland.,Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | - P Hackman
- Folkhälsan Institute of Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - B Udd
- Folkhälsan Institute of Genetics, Medicum, University of Helsinki, Helsinki, Finland.,Neuromuscular Research Center, Tampere University and University Hospital, Tampere, Finland.,Department of Neurology, Vaasa Central Hospital, Vaasa, Finland
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Dong S, Zhang R, Liang Y, Shi J, Li J, Shang F, Mao X, Sun J. Changes of myocardial lipidomics profiling in a rat model of diabetic cardiomyopathy using UPLC/Q-TOF/MS analysis. Diabetol Metab Syndr 2017; 9:56. [PMID: 28736579 PMCID: PMC5520292 DOI: 10.1186/s13098-017-0249-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 06/28/2017] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Diabetic cardiomyopathy (DCM) is a serious cardiac dysfunction induced by changes in the structure and contractility of the myocardium that are initiated in part by alterations in energy substrates. The underlying mechanisms of DCM are still under controversial. The observation of lipids, especially lipidomics profiling, can provide an insight into the know the biomarkers of DCM. The aim of our research was to detect changes of myocardial lipidomics profiling in a rat model of diabetic cardiomyopathy. METHODS Diabetic cardiomyopathy was induced by feeding a high-sucrose/fat diet (HSFD) for 28 weeks and streptozotocin (30 mg/kg, intraperitoneally). The ultra-high-performance liquid chromatography (UPLC) coupled to quadruple time-of flight (QTOF) mass spectrometer was used to acquire and analyze the lipidomics profiling of myocardial tissue. Meanwhile, parameters of cardiac function were collected using cardiac catheterization, and the cardiac index was calculated, and fasting blood glucose and lipid levels were measured by an ultraviolet spectrophotometric method. RESULTS We detected 3023 positive ion peaks and 300 negative ion peaks. Levels of phosphatidylcholine (PC) (22:6/18:2), PC (22:6/18:1), PC (20:4/16:1), PC (16:1/18:3), phosphatidylethanolamine (PE) (20:4/18:2), and PE (20:4/16:0) were down-regulated, and PC (20:2/18:2), PC (18:0/16:0), and PC (20:4/18:0) were up-regulated in DCM model rats, when compared with control rats. Cardiac functions signed as values of left ventricular systolic pressure, maximal uprising velocity of left ventricular pressure and maximal decreasing velocity of left ventricular pressure were injured by 21-44%, and the cardiac index was increased by 25%, and fasting blood glucose and lipids were increased by 34-368%. Meanwhile, the cardiac lipid-related biomarkers have significant correlation with changes of cardiac function and cardiac index. CONCLUSIONS UPLC/Q-TOF/MS analysis data suggested changes of some potential lipid biomarkers in the development of cardiac dysfunction and hypertrophy of diabetic cardiomyopathy, which may serve as potential important targets for clinical diagnosis and therapeutic intervention of DCM in the future.
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Affiliation(s)
- Shifen Dong
- Department of Pharmacology, School of Chinese Materia Medica, Beijing University of Chinese Medicine, No. 6 Wang Jing Zhong Huan South Road, Chaoyang District, Beijing, 100102 China
| | - Rong Zhang
- Department of Pharmacology, School of Chinese Materia Medica, Beijing University of Chinese Medicine, No. 6 Wang Jing Zhong Huan South Road, Chaoyang District, Beijing, 100102 China
| | - Yaoyue Liang
- Department of Pharmacology, School of Chinese Materia Medica, Beijing University of Chinese Medicine, No. 6 Wang Jing Zhong Huan South Road, Chaoyang District, Beijing, 100102 China
| | - Jiachen Shi
- Department of Pharmacology, School of Chinese Materia Medica, Beijing University of Chinese Medicine, No. 6 Wang Jing Zhong Huan South Road, Chaoyang District, Beijing, 100102 China
| | - Jiajia Li
- Department of Pharmacology, School of Chinese Materia Medica, Beijing University of Chinese Medicine, No. 6 Wang Jing Zhong Huan South Road, Chaoyang District, Beijing, 100102 China
| | - Fei Shang
- Beijing University of Chemical Technology, Beijing, 100029 China
| | - Xuezhou Mao
- Biostatistics and Programming, Sanofi U.S., Bridgewater, NJ 08807 USA
| | - Jianning Sun
- Department of Pharmacology, School of Chinese Materia Medica, Beijing University of Chinese Medicine, No. 6 Wang Jing Zhong Huan South Road, Chaoyang District, Beijing, 100102 China
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Falik Zaccai TC, Savitzki D, Zivony-Elboum Y, Vilboux T, Fitts EC, Shoval Y, Kalfon L, Samra N, Keren Z, Gross B, Chasnyk N, Straussberg R, Mullikin JC, Teer JK, Geiger D, Kornitzer D, Bitterman-Deutsch O, Samson AO, Wakamiya M, Peterson JW, Kirtley ML, Pinchuk IV, Baze WB, Gahl WA, Kleta R, Anikster Y, Chopra AK. Phospholipase A2-activating protein is associated with a novel form of leukoencephalopathy. Brain 2016; 140:370-386. [PMID: 28007986 DOI: 10.1093/brain/aww295] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 09/27/2016] [Accepted: 09/28/2016] [Indexed: 12/14/2022] Open
Abstract
Leukoencephalopathies are a group of white matter disorders related to abnormal formation, maintenance, and turnover of myelin in the central nervous system. These disorders of the brain are categorized according to neuroradiological and pathophysiological criteria. Herein, we have identified a unique form of leukoencephalopathy in seven patients presenting at ages 2 to 4 months with progressive microcephaly, spastic quadriparesis, and global developmental delay. Clinical, metabolic, and imaging characterization of seven patients followed by homozygosity mapping and linkage analysis were performed. Next generation sequencing, bioinformatics, and segregation analyses followed, to determine a loss of function sequence variation in the phospholipase A2-activating protein encoding gene (PLAA). Expression and functional studies of the encoded protein were performed and included measurement of prostaglandin E2 and cytosolic phospholipase A2 activity in membrane fractions of fibroblasts derived from patients and healthy controls. Plaa-null mice were generated and prostaglandin E2 levels were measured in different tissues. The novel phenotype of our patients segregated with a homozygous loss-of-function sequence variant, causing the substitution of leucine at position 752 to phenylalanine, in PLAA, which causes disruption of the protein's ability to induce prostaglandin E2 and cytosolic phospholipase A2 synthesis in patients' fibroblasts. Plaa-null mice were perinatal lethal with reduced brain levels of prostaglandin E2 The non-functional phospholipase A2-activating protein and the associated neurological phenotype, reported herein for the first time, join other complex phospholipid defects that cause leukoencephalopathies in humans, emphasizing the importance of this axis in white matter development and maintenance.
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Affiliation(s)
- Tzipora C Falik Zaccai
- Institute of Human Genetics, Galilee Medical Center, Nahariya, Israel .,Faculty of Medicine in the Galilee, Bar Ilan University, Safed, Israel
| | - David Savitzki
- Pediatric Neurology Unit, Galilee Medical Center, Nahariya, Israel
| | | | - Thierry Vilboux
- Section on Human Biochemical Genetics, Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA.,Division of Medical Genomics, Inova Translational Medicine Institute, Inova Health System, Falls Church, VA, USA
| | - Eric C Fitts
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
| | - Yishay Shoval
- Institute of Human Genetics, Galilee Medical Center, Nahariya, Israel
| | - Limor Kalfon
- Institute of Human Genetics, Galilee Medical Center, Nahariya, Israel
| | - Nadra Samra
- Institute of Human Genetics, Galilee Medical Center, Nahariya, Israel
| | - Zohar Keren
- Institute of Human Genetics, Galilee Medical Center, Nahariya, Israel
| | - Bella Gross
- Faculty of Medicine in the Galilee, Bar Ilan University, Safed, Israel.,Department of Neurology, Galilee Medical Center, Nahariya, Israel
| | - Natalia Chasnyk
- Institute of Human Genetics, Galilee Medical Center, Nahariya, Israel
| | - Rachel Straussberg
- Pediatric Neurology Unit, Schneider Children's Medical Center, Petach Tikva, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - James C Mullikin
- Comparative Genomics Analysis Unit, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA.,NIH Intramural Sequencing Center, National Human Genome Research Institute, Rockville, MD, USA
| | - Jamie K Teer
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center, Tampa, FL, USA
| | - Dan Geiger
- Computer Sciences, Technion - Israel Institute of Technology, Haifa, Israel
| | - Daniel Kornitzer
- Faculty of Medicine, Technion - I.I.T. and Rappaport Institute for Biomedical Research, Haifa, Israel
| | - Ora Bitterman-Deutsch
- Faculty of Medicine in the Galilee, Bar Ilan University, Safed, Israel.,Dermatology Clinic, Galilee Medical Center, Nahariya, Israel
| | - Abraham O Samson
- Faculty of Medicine in the Galilee, Bar Ilan University, Safed, Israel
| | - Maki Wakamiya
- Transgenic Mouse Core Facility, Institute for Translational Sciences and Animal Resource Center, University of Texas Medical Branch, Galveston, TX, USA
| | - Johnny W Peterson
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
| | - Michelle L Kirtley
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
| | - Iryna V Pinchuk
- Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX, USA
| | - Wallace B Baze
- Department of Veterinary Sciences, MD Anderson Cancer Center, Bastrop, TX, USA
| | - William A Gahl
- Section on Human Biochemical Genetics, Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Robert Kleta
- University College, Royal Free Hospital / UCL Medical School, London, UK
| | - Yair Anikster
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Metabolic Disease Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Aviv, Israel
| | - Ashok K Chopra
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
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Tingaud-Sequeira A, Raldúa D, Lavie J, Mathieu G, Bordier M, Knoll-Gellida A, Rambeau P, Coupry I, André M, Malm E, Möller C, Andreasson S, Rendtorff ND, Tranebjærg L, Koenig M, Lacombe D, Goizet C, Babin PJ. Functional validation of ABHD12 mutations in the neurodegenerative disease PHARC. Neurobiol Dis 2016; 98:36-51. [PMID: 27890673 DOI: 10.1016/j.nbd.2016.11.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 10/25/2016] [Accepted: 11/21/2016] [Indexed: 12/13/2022] Open
Abstract
ABHD12 mutations have been linked to neurodegenerative PHARC (polyneuropathy, hearing loss, ataxia, retinitis pigmentosa, and early-onset cataract), a rare, progressive, autosomal, recessive disease. Although ABHD12 is suspected to play a role in the lysophosphatidylserine and/or endocannabinoid pathways, its precise functional role(s) leading to PHARC disease had not previously been characterized. Cell and zebrafish models were designed to demonstrate the causal link between an identified new missense mutation p.T253R, characterized in ABHD12 from a young patient, the previously characterized p.T202I and p.R352* mutations, and the associated PHARC. Measuring ABHD12 monoacylglycerol lipase activity in transfected HEK293 cells demonstrated inhibition with mutated isoforms. Both the expression pattern of zebrafish abhd12 and the phenotype of specific antisense morpholino oligonucleotide gene knockdown morphants were consistent with human PHARC hallmarks. High abhd12 transcript levels were found in the optic tectum and tract, colocalized with myelin basic protein, and in the spinal cord. Morphants have myelination defects and concomitant functional deficits, characterized by progressive ataxia and motor skill impairment. A disruption of retina architecture and retinotectal projections was observed, together with an inhibition of lens clarification and a low number of mechanosensory hair cells in the inner ear and lateral line system. The severe phenotypes in abhd12 knockdown morphants were rescued by introducing wild-type human ABHD12 mRNA, but not by mutation-harboring mRNAs. Zebrafish may provide a suitable vertebrate model for ABHD12 insufficiency and the study of functional impairment and potential therapeutic rescue of this rare, neurodegenerative disease.
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Affiliation(s)
- Angèle Tingaud-Sequeira
- Univ. Bordeaux, INSERM U1211, Maladies Rares: Génétique et Métabolisme (MRGM), F-33076 Bordeaux, France
| | | | - Julie Lavie
- Univ. Bordeaux, INSERM U1211, Maladies Rares: Génétique et Métabolisme (MRGM), F-33076 Bordeaux, France
| | - Guilaine Mathieu
- Univ. Bordeaux, INSERM U1211, Maladies Rares: Génétique et Métabolisme (MRGM), F-33076 Bordeaux, France
| | - Magali Bordier
- Univ. Bordeaux, INSERM U1211, Maladies Rares: Génétique et Métabolisme (MRGM), F-33076 Bordeaux, France; CHU Bordeaux, Hôpital Pellegrin, Service de Génétique Médicale, Bordeaux, France
| | - Anja Knoll-Gellida
- Univ. Bordeaux, INSERM U1211, Maladies Rares: Génétique et Métabolisme (MRGM), F-33076 Bordeaux, France
| | - Pierre Rambeau
- Univ. Bordeaux, INSERM U1211, Maladies Rares: Génétique et Métabolisme (MRGM), F-33076 Bordeaux, France
| | - Isabelle Coupry
- Univ. Bordeaux, INSERM U1211, Maladies Rares: Génétique et Métabolisme (MRGM), F-33076 Bordeaux, France
| | - Michèle André
- Univ. Bordeaux, INSERM U1211, Maladies Rares: Génétique et Métabolisme (MRGM), F-33076 Bordeaux, France
| | - Eva Malm
- Department of Ophthalmology, Lund University Hospital, Lund, Sweden
| | - Claes Möller
- School of Medicine and Health, Örebro University, Sweden
| | - Sten Andreasson
- Department of Ophthalmology, Lund University Hospital, Lund, Sweden
| | - Nanna D Rendtorff
- Department Audiology, Bispebjerg Hospital/Rigshospitalet, Department of Clinical Genetics, Rigshospitalet/The Kennedy Center, University of Copenhagen, Institute for Clinical Medicine Copenhagen, Denmark
| | - Lisbeth Tranebjærg
- Department Audiology, Bispebjerg Hospital/Rigshospitalet, Department of Clinical Genetics, Rigshospitalet/The Kennedy Center, University of Copenhagen, Institute for Clinical Medicine Copenhagen, Denmark
| | - Michel Koenig
- Laboratoire de Génétique Moléculaire et unité INSERM UMR_S827, IURC, Montpellier, France
| | - Didier Lacombe
- Univ. Bordeaux, INSERM U1211, Maladies Rares: Génétique et Métabolisme (MRGM), F-33076 Bordeaux, France; CHU Bordeaux, Hôpital Pellegrin, Service de Génétique Médicale, Bordeaux, France
| | - Cyril Goizet
- Univ. Bordeaux, INSERM U1211, Maladies Rares: Génétique et Métabolisme (MRGM), F-33076 Bordeaux, France; CHU Bordeaux, Hôpital Pellegrin, Service de Génétique Médicale, Bordeaux, France
| | - Patrick J Babin
- Univ. Bordeaux, INSERM U1211, Maladies Rares: Génétique et Métabolisme (MRGM), F-33076 Bordeaux, France.
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Howard R, Chataway J, Edwards M, Heales S, Lachmann R, Leff A, Murphy E. Toxic, Metabolic and Physical Insults to the Nervous System and Inherited Disorders of Metabolism. Neurology 2016. [DOI: 10.1002/9781118486160.ch19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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46
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Vevea JD, Garcia EJ, Chan RB, Zhou B, Schultz M, Di Paolo G, McCaffery JM, Pon LA. Role for Lipid Droplet Biogenesis and Microlipophagy in Adaptation to Lipid Imbalance in Yeast. Dev Cell 2016; 35:584-599. [PMID: 26651293 DOI: 10.1016/j.devcel.2015.11.010] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 08/14/2015] [Accepted: 11/09/2015] [Indexed: 12/22/2022]
Abstract
The immediate responses to inhibition of phosphatidylcholine (PC) biosynthesis in yeast are altered phospholipid levels, slow growth, and defects in the morphology and localization of ER and mitochondria. With chronic lipid imbalance, yeast adapt. Lipid droplet (LD) biogenesis and conversion of phospholipids to triacylglycerol are required for restoring some phospholipids to near-wild-type levels. We confirmed that the unfolded protein response is activated by this lipid stress and find that Hsp104p is recruited to ER aggregates. We also find that LDs form at ER aggregates, contain polyubiquitinated proteins and an ER chaperone, and are degraded in the vacuole by a process resembling microautophagy. This process, microlipophagy, is required for restoration of organelle morphology and cell growth during adaptation to lipid stress. Microlipophagy does not require ATG7 but does requires ESCRT components and a newly identified class E VPS protein that localizes to ER and is upregulated by lipid imbalance.
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Affiliation(s)
- Jason D Vevea
- Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University, 630 West 168(th) Street, New York, NY 10032, USA
| | - Enrique J Garcia
- Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University, 630 West 168(th) Street, New York, NY 10032, USA
| | - Robin B Chan
- Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University, 630 West 168(th) Street, New York, NY 10032, USA
| | - Bowen Zhou
- Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University, 630 West 168(th) Street, New York, NY 10032, USA
| | - Mei Schultz
- Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University, 630 West 168(th) Street, New York, NY 10032, USA
| | - Gilbert Di Paolo
- Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University, 630 West 168(th) Street, New York, NY 10032, USA
| | - J Michael McCaffery
- Integrated Imaging Center, Department of Biology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | - Liza A Pon
- Department of Pathology and Cell Biology, College of Physicians and Surgeons, Columbia University, 630 West 168(th) Street, New York, NY 10032, USA.
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47
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Coignion C, Banneau G, Goizet C. Paraplegie spastiche ereditarie. Neurologia 2016. [DOI: 10.1016/s1634-7072(16)77572-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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48
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Haliloglu G, Topaloglu H. Evidence-based guideline summary: Evaluation, diagnosis, and management of congenital muscular dystrophy: Report of the Guideline Development Subcommittee of the American Academy of Neurology and the Practice Issues Review Panel of the American Association of Neuromuscular & Electrodiagnostic Medicine. Neurology 2016; 85:1432. [PMID: 26481930 DOI: 10.1212/wnl.0000000000002051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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49
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Seyer A, Boudah S, Broudin S, Junot C, Colsch B. Annotation of the human cerebrospinal fluid lipidome using high resolution mass spectrometry and a dedicated data processing workflow. Metabolomics 2016; 12:91. [PMID: 27110228 PMCID: PMC4824825 DOI: 10.1007/s11306-016-1023-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 03/18/2016] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Due to its proximity with the brain, cerebrospinal fluid (CSF) could be a medium of choice for the discovery of biomarkers of neurological and psychiatric diseases using untargeted analytical approaches. OBJECTIVES This study explored the CSF lipidome in order to generate a robust mass spectral database using an untargeted lipidomic approach. METHODS Cerebrospinal fluid samples from 45 individuals were analyzed by liquid chromatography coupled to high-resolution mass spectrometry method (LC-HRMS). A dedicated data processing workflow was implemented using XCMS software and adapted filters to select reliable features. In addition, an automatic annotation using an in silico lipid database and several MS/MS experiments were performed to identify CSF lipid species. RESULTS Using this complete workflow, 771 analytically relevant monoisotopic lipid species corresponding to 550 unique lipids which represent five major lipid families (i.e., free fatty acids, sphingolipids, glycerophospholipids, glycerolipids, and sterol lipids) were detected and annotated. In addition, MS/MS experiments enabled to improve the annotation of 304 lipid species. Thanks to LC-HRMS, it was possible to discriminate between isobaric and also isomeric lipid species; and interestingly, our study showed that isobaric ions represent about 50 % of the total annotated lipid species in the human CSF. CONCLUSION This work provides an extensive LC/HRMS database of the human CSF lipidome which constitutes a relevant foundation for future studies aimed at finding biomarkers of neurological disorders.
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Affiliation(s)
| | - Samia Boudah
- CEA-Saclay, DSV/iBiTec-S/SPI, Laboratoire d’étude du Métabolisme des Médicaments, MetaboHUB-Paris, Gif-Sur-Yvette, France
| | | | - Christophe Junot
- CEA-Saclay, DSV/iBiTec-S/SPI, Laboratoire d’étude du Métabolisme des Médicaments, MetaboHUB-Paris, Gif-Sur-Yvette, France
| | - Benoit Colsch
- CEA-Saclay, DSV/iBiTec-S/SPI, Laboratoire d’étude du Métabolisme des Médicaments, MetaboHUB-Paris, Gif-Sur-Yvette, France
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50
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Saunders CJ, Moon SH, Liu X, Thiffault I, Coffman K, LePichon JB, Taboada E, Smith LD, Farrow EG, Miller N, Gibson M, Patterson M, Kingsmore SF, Gross RW. Loss of function variants in human PNPLA8 encoding calcium-independent phospholipase A2 γ recapitulate the mitochondriopathy of the homologous null mouse. Hum Mutat 2015; 36:301-6. [PMID: 25512002 DOI: 10.1002/humu.22743] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 12/09/2014] [Indexed: 12/13/2022]
Abstract
Mitochondriopathies are a group of clinically heterogeneous genetic diseases caused by defects in mitochondrial metabolism, bioenergetic efficiency, and/or signaling functions. The large majority of proteins involved in mitochondrial function are encoded by nuclear genes, with many yet to be associated with human disease. We performed exome sequencing on a young girl with a suspected mitochondrial myopathy that manifested as progressive muscle weakness, hypotonia, seizures, poor weight gain, and lactic acidosis. She was compound heterozygous for two frameshift mutations, p.Asn112HisfsX29 and p.Leu659AlafsX4, in the PNPLA8 gene, which encodes mitochondrial calcium-independent phospholipase A2 γ (iPLA2 γ). Western blot analysis of affected muscle displayed the absence of PNPLA8 protein. iPLA2 s are critical mediators of a variety of cellular processes including growth, metabolism, and lipid second messenger generation, exerting their functions through catalyzing the cleavage of the acyl groups in glycerophospholipids. The clinical presentation, muscle histology and the mitochondrial ultrastructural abnormalities of this proband are highly reminiscent of Pnpla8 null mice. Although other iPLA2 -related diseases have been identified, namely, infantile neuroaxonal dystrophy and neutral lipid storage disease with myopathy, this is the first report of PNPLA8-related disease in a human. We suggest PNPLA8 join the increasing list of human genes involved in lipid metabolism associated with neuromuscular diseases due to mitochondrial dysfunction.
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Affiliation(s)
- Carol J Saunders
- Center for Pediatric Genomic Medicine, Children's Mercy Hospitals, Kansas City, Missouri
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