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Ni M, Solmonson A, Pan C, Yang C, Li D, Notzon A, Cai L, Guevara G, Zacharias LG, Faubert B, Vu HS, Jiang L, Ko B, Morales NM, Pei J, Vale G, Rakheja D, Grishin NV, McDonald JG, Gotway GK, McNutt MC, Pascual JM, DeBerardinis RJ. Functional Assessment of Lipoyltransferase-1 Deficiency in Cells, Mice, and Humans. Cell Rep 2020; 27:1376-1386.e6. [PMID: 31042466 PMCID: PMC7351313 DOI: 10.1016/j.celrep.2019.04.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 02/21/2019] [Accepted: 03/28/2019] [Indexed: 12/31/2022] Open
Abstract
Inborn errors of metabolism (IEMs) link metabolic defects to human phenotypes. Modern genomics has accelerated IEM discovery, but assessing the impact of genomic variants is still challenging. Here, we integrate genomics and metabolomics to identify a cause of lactic acidosis and epilepsy. The proband is a compound heterozygote for variants in LIPT1, which encodes the lipoyltransferase required for 2-ketoacid dehydrogenase (2KDH) function. Metabolomics reveals abnormalities in lipids, amino acids, and 2-hydroxyglutarate consistent with loss of multiple 2KDHs. Homozygous knockin of a LIPT1 mutation reduces 2KDH lipoylation in utero and results in embryonic demise. In patient fibroblasts, defective 2KDH lipoylation and function are corrected by wild-type, but not mutant, LIPT1 alleles. Isotope tracing reveals that LIPT1 supports lipogenesis and balances oxidative and reductive glutamine metabolism. Altogether, the data extend the role of LIPT1 in metabolic regulation and demonstrate how integrating genomics and metabolomics can uncover broader aspects of IEM pathophysiology.
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Affiliation(s)
- Min Ni
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Pediatrics, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
| | - Ashley Solmonson
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Chunxiao Pan
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Chendong Yang
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Dan Li
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Ashley Notzon
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Ling Cai
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Quantitative Biomedical Research Center, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Gerardo Guevara
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Lauren G Zacharias
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Brandon Faubert
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Hieu S Vu
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Lei Jiang
- Department of Molecular and Cellular Endocrinology, City of Hope, Duarte, CA 91010, USA
| | - Bookyung Ko
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Noriko Merida Morales
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jimin Pei
- Howard Hughes Medical Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Gonçalo Vale
- Department of Molecular Genetics, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Dinesh Rakheja
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Nick V Grishin
- Department of Biophysics, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Howard Hughes Medical Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jeffrey G McDonald
- Department of Molecular Genetics, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Garrett K Gotway
- Department of Pediatrics, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Eugene McDermott Center for Human Growth and Development, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Markey C McNutt
- Department of Pediatrics, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Eugene McDermott Center for Human Growth and Development, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Juan M Pascual
- Department of Pediatrics, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Eugene McDermott Center for Human Growth and Development, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Neurology and Neurotherapeutics, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Physiology, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Ralph J DeBerardinis
- Children's Medical Center Research Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Pediatrics, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Eugene McDermott Center for Human Growth and Development, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Howard Hughes Medical Institute, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
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Lim J, Liu Z, Apontes P, Feng D, Pessin JE, Sauve AA, Angeletti RH, Chi Y. Dual mode action of mangiferin in mouse liver under high fat diet. PLoS One 2014; 9:e90137. [PMID: 24598864 PMCID: PMC3943915 DOI: 10.1371/journal.pone.0090137] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2013] [Accepted: 01/28/2014] [Indexed: 12/31/2022] Open
Abstract
Chronic over-nutrition is a major contributor to the spread of obesity and its related metabolic disorders. Development of therapeutics has been slow compared to the speedy increase in occurrence of these metabolic disorders. We have identified a natural compound, mangiferin (MGF) (a predominant component of the plants of Anemarrhena asphodeloides and Mangifera indica), that can protect against high fat diet (HFD) induced obesity, hyperglycemia, insulin resistance and hyperlipidemia in mice. However, the molecular mechanisms whereby MGF exerts these beneficial effects are unknown. To understand MGF mechanisms of action, we performed unbiased quantitative proteomic analysis of protein profiles in liver of mice fed with HFD utilizing 15N metabolically labeled liver proteins as internal standards. We found that out of 865 quantified proteins 87 of them were significantly differentially regulated by MGF. Among those 87 proteins, 50% of them are involved in two major processes, energy metabolism and biosynthesis of metabolites. Further classification indicated that MGF increased proteins important for mitochondrial biogenesis and oxidative activity including oxoglutarate dehydrogenase E1 (Dhtkd1) and cytochrome c oxidase subunit 6B1 (Cox6b1). Conversely, MGF reduced proteins critical for lipogenesis such as fatty acid stearoyl-CoA desaturase 1 (Scd1) and acetyl-CoA carboxylase 1 (Acac1). These mass spectrometry data were confirmed and validated by western blot assays. Together, data indicate that MGF upregulates proteins pivotal for mitochondrial bioenergetics and downregulates proteins controlling de novo lipogenesis. This novel mode of dual pharmacodynamic actions enables MGF to enhance energy expenditure and inhibit lipogenesis, and thereby correct HFD induced liver steatosis and prevent adiposity. This provides a molecular basis supporting development of MGF or its metabolites into therapeutics to treat metabolic disorders.
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Affiliation(s)
- Jihyeon Lim
- The Laboratory for Macromolecular Analysis & Proteomics, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York, United States of America
- Department of Pathology, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York, United States of America
- * E-mail: (JL)
| | - Zhongbo Liu
- Department of Medicine, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York, United States of America
- * E-mail: (JL)
| | - Pasha Apontes
- Department of Medicine, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York, United States of America
| | - Daorong Feng
- Department of Medicine, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York, United States of America
| | - Jeffrey E. Pessin
- Department of Medicine, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York, United States of America
- Department of Molecular Pharmacology, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York, United States of America
| | - Anthony A. Sauve
- Department of Pharmacology, Weill Cornell Medical College, New York, New York, United States of America
| | - Ruth H. Angeletti
- The Laboratory for Macromolecular Analysis & Proteomics, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York, United States of America
- Department of Pathology, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York, United States of America
| | - Yuling Chi
- Department of Medicine, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York, United States of America
- * E-mail: (JL)
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Bilo L, Peluso S, Antenora A, De Rosa A, Auletta G, Pappatà S, De Michele G. Parkinsonism may be part of the symptom complex of DOOR syndrome. Parkinsonism Relat Disord 2014; 20:463-5. [PMID: 24486243 DOI: 10.1016/j.parkreldis.2014.01.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 12/18/2013] [Accepted: 01/15/2014] [Indexed: 10/25/2022]
Affiliation(s)
- Leonilda Bilo
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | - Silvio Peluso
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy.
| | - Antonella Antenora
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | - Anna De Rosa
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | - Gennaro Auletta
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | - Sabina Pappatà
- Biostructure and Bioimaging Institute, CNR, Naples, Italy
| | - Giuseppe De Michele
- Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
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Werner SR, Saha JK, Broderick CL, Zhen EY, Higgs RE, Duffin KL, Smith RC. Proteomic analysis of demyelinated and remyelinating brain tissue following dietary cuprizone administration. J Mol Neurosci 2010; 42:210-25. [PMID: 20401640 DOI: 10.1007/s12031-010-9354-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2010] [Accepted: 03/18/2010] [Indexed: 10/19/2022]
Abstract
Cuprizone intoxication is a commonly used model of demyelination that allows the temporal separation of demyelination and remyelination. The underlying biochemical alterations leading to demyelination, using this model, remain unclear and may be multifold. Analysis of proteomic changes within the brains of cuprizone-exposed animals may help elucidate key cellular processes. In the current study, we report the results of the liquid chromatography tandem mass spectrometry analysis of total protein from the brain hemispheres of control and toxin-exposed mice at 6 weeks of exposure and after 3 and 6 weeks of recovery to identify protein changes during the remyelination phase. We found that at 6 weeks of cuprizone exposure, myelin proteins were reduced compared to controls and increased throughout the course of recovery, as expected. In contrast, other protein groups, such as proteins related to mitochondrial function, were increased at 6 weeks of treatment compared to untreated controls and returned toward control levels following withdrawal of toxin. These results suggest that a global proteomic analysis of the brain tissue of cuprizone-treated mice can identify changes related to the demyelination/remyelination process.
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Affiliation(s)
- Sean R Werner
- Biotechnology Discovery Research, Eli Lilly and Company, Lilly Research Laboratories, Lilly Corporate Center, Indianapolis, IN 46285, USA.
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James AW, Miranda SG, Culver K, Hall BD, Golabi M. DOOR syndrome: clinical report, literature review and discussion of natural history. Am J Med Genet A 2008; 143A:2821-31. [PMID: 17994565 DOI: 10.1002/ajmg.a.32054] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
DOOR syndrome (deafness, onychodystrophy, osteodystrophy, and mental retardation) is a rarely described disorder with less than 35 reports in the literature. The hallmarks of the syndrome, represented in the DOOR acronym, include sensorineural hearing loss, hypoplastic or absent nails on the hands and feet, small or absent distal phalanges of the hands and feet, and mental retardation. The purpose of our communication is to report on an additional patient with DOOR syndrome, delineate common as well as less frequent manifestations of DOOR syndrome, bring attention to the under appreciated facial features in DOOR syndrome, document the natural history of this disorder, and propose a suggested workup of those suspected of DOOR syndrome. DOOR syndrome is associated with characteristic, coarse facial features with large nose with wide nasal bridge, bulbous tip and anteverted nares, a long prominent philtrum and downturned corners of the mouth. The natural history is one of a deteriorative course, with progressive neurological manifestations including sensorineural deafness, seizures from infancy, optic atrophy, and a peripheral polyneuropathy. The majority of patients with DOOR syndrome have elevated levels of 2-oxoglutarate in the urine and plasma. In this report, we present a newborn with manifestations consistent with DOOR syndrome and a progressive clinical course. A comprehensive literature review reveals 32 patients with DOOR syndrome. In conclusion, DOOR syndrome is a neurometabolic disorder with recognizable facial features and a progressive natural history.
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Affiliation(s)
- Aaron W James
- School of Medicine, University of California, San Francisco, California.
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