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Smith SM, Weathers TD, Virdee MS, Schwantes-An TH, Voruganti VS, Mattson SN, Coles CD, Kable JA, Sowell E, Wozniak JR, Wetherill L. Polymorphisms in the choline transporter SLC44A1 are associated with reduced cognitive performance in normotypic but not prenatal alcohol-exposed children. Am J Clin Nutr 2024; 119:117-126. [PMID: 38176775 PMCID: PMC10925855 DOI: 10.1016/j.ajcnut.2023.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 09/27/2023] [Accepted: 10/03/2023] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND Choline is essential for healthy cognitive development. Single nucleotide polymorphisms (SNPs; rs3199966(G), rs2771040(G)) within the choline transporter SLC44A1 increase risk for choline deficiency. In a choline intervention trial of children who experienced prenatal alcohol exposure (PAE), these alleles are associated with improved cognition. OBJECTIVE This study aimed to determine if SNPs within SLC44A1 are differentially associated with cognition in children with PAE compared with normotypic controls (genotype × exposure). A secondary objective tested for an association of these SNPs and cognition in controls (genotype-only). DESIGN This is a secondary analysis of data from the Collaborative Initiative on Fetal Alcohol Spectrum Disorders. Participants (163 normotypic controls, 162 PAE) underwent psychological assessments and were genotyped within SLC44A1. Choline status was not assessed. Association analysis between genotype × exposure was performed using an additive genetic model and linear regression to identify the allelic effect. The primary outcome was the interaction between SLC44A1 genotype × exposure status with respect to cognition. The secondary outcome was the cognitive-genotype association in normotypic controls. RESULTS Genotype × exposure analysis identified 7 SNPs in SLC44A1, including rs3199966(G) and rs2771040(G), and in strong linkage (D' ≥ 0.87), that were associated (adjusted P ≤ 0.05) with reduced performance in measures of general cognition, nonverbal and quantitative reasoning, memory, and executive function (β, 1.92-3.91). In controls, carriers of rs3199966(GT or GG) had worsened cognitive performance than rs3199966(TT) carriers (β, 0.46-0.83; P < 0.0001), whereas cognitive performance did not differ by rs3199966 genotype in those with PAE. CONCLUSIONS Two functional alleles that increase vulnerability to choline deficiency, rs3199966(G) (Ser644Ala) and rs2771040(G) (3' untranslated region), are associated with worsened cognition in otherwise normotypic children. These alleles were previously associated with greater cognitive improvement in children with PAE who received supplemental choline. The findings endorse that choline benefits cognitive development in normotypic children and those with PAE.
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Affiliation(s)
- Susan M Smith
- UNC Nutrition Research Institute University of North Carolina at Chapel Hill, Kannapolis, NC, United States; Department of Nutrition, University of North Carolina at Chapel Hill, Kannapolis, NC, United States.
| | - Torri D Weathers
- UNC Nutrition Research Institute University of North Carolina at Chapel Hill, Kannapolis, NC, United States
| | - Manjot S Virdee
- UNC Nutrition Research Institute University of North Carolina at Chapel Hill, Kannapolis, NC, United States
| | - Tae-Hwi Schwantes-An
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Venkata Saroja Voruganti
- UNC Nutrition Research Institute University of North Carolina at Chapel Hill, Kannapolis, NC, United States; Department of Nutrition, University of North Carolina at Chapel Hill, Kannapolis, NC, United States
| | - Sarah N Mattson
- Center for Behavioral Teratology, San Diego State University, San Diego, CA, United States
| | - Claire D Coles
- Departments of Psychiatry and Behavioral Science and Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
| | - Julie A Kable
- Departments of Psychiatry and Behavioral Science and Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
| | - Elizabeth Sowell
- Department of Pediatrics, Neurology, and Psychology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Jeffrey R Wozniak
- Department of Psychiatry & Behavioral Science, University of Minnesota, Minneapolis, MN, United States
| | - Leah Wetherill
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, United States
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Fagerberg CR, Taylor A, Distelmaier F, Schrøder HD, Kibæk M, Wieczorek D, Tarnopolsky M, Brady L, Larsen MJ, Jamra RA, Seibt A, Hejbøl EK, Gade E, Markovic L, Klee D, Nagy P, Rouse N, Agarwal P, Dolinsky VW, Bakovic M. Choline transporter-like 1 deficiency causes a new type of childhood-onset neurodegeneration. Brain 2020; 143:94-111. [PMID: 31855247 DOI: 10.1093/brain/awz376] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 09/11/2019] [Accepted: 10/07/2019] [Indexed: 12/14/2022] Open
Abstract
Cerebral choline metabolism is crucial for normal brain function, and its homoeostasis depends on carrier-mediated transport. Here, we report on four individuals from three families with neurodegenerative disease and homozygous frameshift mutations (Asp517Metfs*19, Ser126Metfs*8, and Lys90Metfs*18) in the SLC44A1 gene encoding choline transporter-like protein 1. Clinical features included progressive ataxia, tremor, cognitive decline, dysphagia, optic atrophy, dysarthria, as well as urinary and bowel incontinence. Brain MRI demonstrated cerebellar atrophy and leukoencephalopathy. Moreover, low signal intensity in globus pallidus with hyperintensive streaking and low signal intensity in substantia nigra were seen in two individuals. The Asp517Metfs*19 and Ser126Metfs*8 fibroblasts were structurally and functionally indistinguishable. The most prominent ultrastructural changes of the mutant fibroblasts were reduced presence of free ribosomes, the appearance of elongated endoplasmic reticulum and strikingly increased number of mitochondria and small vesicles. When chronically treated with choline, those characteristics disappeared and mutant ultrastructure resembled healthy control cells. Functional analysis revealed diminished choline transport yet the membrane phosphatidylcholine content remained unchanged. As part of the mechanism to preserve choline and phosphatidylcholine, choline transporter deficiency was implicated in impaired membrane homeostasis of other phospholipids. Choline treatments could restore the membrane lipids, repair cellular organelles and protect mutant cells from acute iron overload. In conclusion, we describe a novel childhood-onset neurometabolic disease caused by choline transporter deficiency with autosomal recessive inheritance.
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Affiliation(s)
| | - Adrian Taylor
- Department of Human Health and Nutritional Sciences, University of Guelph, Canada
| | - Felix Distelmaier
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Children's Hospital, Heinrich-Heine University, Düsseldorf, Germany
| | | | - Maria Kibæk
- Children Hospital of H. C Andersen, Odense University Hospital, Odense, Denmark
| | - Dagmar Wieczorek
- Institute of Human Genetics, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Mark Tarnopolsky
- Department of Pediatrics, Neuromuscular and Neurometabolic Clinic, McMaster University Medical Centre, Hamilton, Canada
| | - Lauren Brady
- Department of Pediatrics, Neuromuscular and Neurometabolic Clinic, McMaster University Medical Centre, Hamilton, Canada
| | - Martin J Larsen
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
| | - Rami A Jamra
- Institute of Human Genetics, Leipzig University, Germany and Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Annette Seibt
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Children's Hospital, Heinrich-Heine University, Düsseldorf, Germany
| | | | - Else Gade
- Department of Ophthalmology, Odense University Hospital, 5000 Odense C, Denmark
| | - Ljubo Markovic
- Department of Radiology, Odense University Hospital, 5000 Odense C, Denmark
| | - Dirk Klee
- Department of Diagnostic and Interventional Radiology, Heinrich-Heine University, Düsseldorf, Germany
| | | | | | - Prasoon Agarwal
- Department of Pharmacology and Therapeutics, University of Manitoba, Canada
| | - Vernon W Dolinsky
- Department of Pharmacology and Therapeutics, University of Manitoba, Canada
| | - Marica Bakovic
- Department of Human Health and Nutritional Sciences, University of Guelph, Canada
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Gobeil Odai K, O’Dwyer C, Steenbergen R, Shaw TA, Renner TM, Ghorbani P, Rezaaifar M, Han S, Langlois MA, Crawley AM, Russell RS, Pezacki JP, Tyrrell DL, Fullerton MD. In Vitro Hepatitis C Virus Infection and Hepatic Choline Metabolism. Viruses 2020; 12:v12010108. [PMID: 31963173 PMCID: PMC7019665 DOI: 10.3390/v12010108] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 01/13/2020] [Indexed: 01/04/2023] Open
Abstract
Choline is an essential nutrient required for normal neuronal and muscular development, as well as homeostatic regulation of hepatic metabolism. In the liver, choline is incorporated into the main eukaryotic phospholipid, phosphatidylcholine (PC), and can enter one-carbon metabolism via mitochondrial oxidation. Hepatitis C virus (HCV) is a hepatotropic positive-strand RNA virus that similar to other positive-strand RNA viruses and can impact phospholipid metabolism. In the current study we sought to interrogate if HCV modulates markers of choline metabolism following in vitro infection, while subsequently assessing if the inhibition of choline uptake and metabolism upon concurrent HCV infection alters viral replication and infectivity. Additionally, we assessed whether these parameters were consistent between cells cultured in fetal bovine serum (FBS) or human serum (HS), conditions known to differentially affect in vitro HCV infection. We observed that choline transport in FBS- and HS-cultured Huh7.5 cells is facilitated by the intermediate affinity transporter, choline transporter-like family (CTL). HCV infection in FBS, but not HS-cultured cells diminished CTL1 transcript and protein expression at 24 h post-infection, which was associated with lower choline uptake and lower incorporation of choline into PC. No changes in other transporters were observed and at 96 h post-infection, all differences were normalized. Reciprocally, limiting the availability of choline for PC synthesis by use of a choline uptake inhibitor resulted in increased HCV replication at this early stage (24 h post-infection) in both FBS- and HS-cultured cells. Finally, in chronic infection (96 h post-infection), inhibiting choline uptake and metabolism significantly impaired the production of infectious virions. These results suggest that in addition to a known role of choline kinase, the transport of choline, potentially via CTL1, might also represent an important and regulated process during HCV infection.
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Affiliation(s)
- Kaelan Gobeil Odai
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (K.G.O.); (C.O.); (T.M.R.); (P.G.); (M.R.); (S.H.); (M.-A.L.); (A.M.C.); (J.P.P.)
- University of Ottawa Centre for Infection, Immunity and Inflammation and Centre for Catalysis Research and Innovation, Ottawa, ON K1H 8M5, Canada
| | - Conor O’Dwyer
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (K.G.O.); (C.O.); (T.M.R.); (P.G.); (M.R.); (S.H.); (M.-A.L.); (A.M.C.); (J.P.P.)
- University of Ottawa Centre for Infection, Immunity and Inflammation and Centre for Catalysis Research and Innovation, Ottawa, ON K1H 8M5, Canada
| | - Rineke Steenbergen
- Department of Medical Microbiology and Immunology and Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB T6G 2E1, Canada; (R.S.); (D.L.T.)
| | - Tyler A. Shaw
- Department of Chemistry and Biomolecular Sciences, Faculty of Science, University of Ottawa, Ottawa, ON K1N 6N5, Canada;
| | - Tyler M. Renner
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (K.G.O.); (C.O.); (T.M.R.); (P.G.); (M.R.); (S.H.); (M.-A.L.); (A.M.C.); (J.P.P.)
- University of Ottawa Centre for Infection, Immunity and Inflammation and Centre for Catalysis Research and Innovation, Ottawa, ON K1H 8M5, Canada
| | - Peyman Ghorbani
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (K.G.O.); (C.O.); (T.M.R.); (P.G.); (M.R.); (S.H.); (M.-A.L.); (A.M.C.); (J.P.P.)
- University of Ottawa Centre for Infection, Immunity and Inflammation and Centre for Catalysis Research and Innovation, Ottawa, ON K1H 8M5, Canada
| | - Mojgan Rezaaifar
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (K.G.O.); (C.O.); (T.M.R.); (P.G.); (M.R.); (S.H.); (M.-A.L.); (A.M.C.); (J.P.P.)
- University of Ottawa Centre for Infection, Immunity and Inflammation and Centre for Catalysis Research and Innovation, Ottawa, ON K1H 8M5, Canada
| | - Shauna Han
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (K.G.O.); (C.O.); (T.M.R.); (P.G.); (M.R.); (S.H.); (M.-A.L.); (A.M.C.); (J.P.P.)
- University of Ottawa Centre for Infection, Immunity and Inflammation and Centre for Catalysis Research and Innovation, Ottawa, ON K1H 8M5, Canada
| | - Marc-André Langlois
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (K.G.O.); (C.O.); (T.M.R.); (P.G.); (M.R.); (S.H.); (M.-A.L.); (A.M.C.); (J.P.P.)
- University of Ottawa Centre for Infection, Immunity and Inflammation and Centre for Catalysis Research and Innovation, Ottawa, ON K1H 8M5, Canada
| | - Angela M. Crawley
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (K.G.O.); (C.O.); (T.M.R.); (P.G.); (M.R.); (S.H.); (M.-A.L.); (A.M.C.); (J.P.P.)
- University of Ottawa Centre for Infection, Immunity and Inflammation and Centre for Catalysis Research and Innovation, Ottawa, ON K1H 8M5, Canada
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada
- Department of Medicine, Division of Infectious Diseases, The Ottawa Hospital, Ottawa, ON K1H 8L6, Canada
- Department of Biology, Faculty of Science, Carleton University, Ottawa, ON K1S 5B6, Canada
| | - Rodney S. Russell
- Immunology and Infectious Diseases, Faculty of Medicine, Memorial University of Newfoundland, St. John’s, NL A1B 3V6, Canada;
| | - John P. Pezacki
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (K.G.O.); (C.O.); (T.M.R.); (P.G.); (M.R.); (S.H.); (M.-A.L.); (A.M.C.); (J.P.P.)
- University of Ottawa Centre for Infection, Immunity and Inflammation and Centre for Catalysis Research and Innovation, Ottawa, ON K1H 8M5, Canada
- Department of Chemistry and Biomolecular Sciences, Faculty of Science, University of Ottawa, Ottawa, ON K1N 6N5, Canada;
| | - D. Lorne Tyrrell
- Department of Medical Microbiology and Immunology and Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB T6G 2E1, Canada; (R.S.); (D.L.T.)
| | - Morgan D. Fullerton
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada; (K.G.O.); (C.O.); (T.M.R.); (P.G.); (M.R.); (S.H.); (M.-A.L.); (A.M.C.); (J.P.P.)
- University of Ottawa Centre for Infection, Immunity and Inflammation and Centre for Catalysis Research and Innovation, Ottawa, ON K1H 8M5, Canada
- Correspondence: ; Tel.: +(1)-613-562-5800 (ext. 8310)
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Hou Y, Pinheiro J, Sahm F, Reuss DE, Schrimpf D, Stichel D, Casalini B, Koelsche C, Sievers P, Wefers AK, Reinhardt A, Ebrahimi A, Fernández-Klett F, Pusch S, Meier J, Schweizer L, Paulus W, Prinz M, Hartmann C, Plate KH, Reifenberger G, Pietsch T, Varlet P, Pagès M, Schüller U, Scheie D, de Stricker K, Frank S, Hench J, Pollo B, Brandner S, Unterberg A, Pfister SM, Jones DTW, Korshunov A, Wick W, Capper D, Blümcke I, von Deimling A, Bertero L. Papillary glioneuronal tumor (PGNT) exhibits a characteristic methylation profile and fusions involving PRKCA. Acta Neuropathol 2019; 137:837-46. [PMID: 30759284 DOI: 10.1007/s00401-019-01969-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 12/05/2018] [Indexed: 12/20/2022]
Abstract
Papillary glioneuronal tumor (PGNT) is a WHO-defined brain tumor entity that poses a major diagnostic challenge. Recently, SLC44A1-PRKCA fusions have been described in PGNT. We subjected 28 brain tumors from different institutions histologically diagnosed as PGNT to molecular and morphological analysis. Array-based methylation analysis revealed that 17/28 tumors exhibited methylation profiles typical for other tumor entities, mostly dysembryoplastic neuroepithelial tumor and hemispheric pilocytic astrocytoma. Conversely, 11/28 tumors exhibited a unique profile, thus constituting a distinct methylation class PGNT. By screening the extended Heidelberg cohort containing over 25,000 CNS tumors, we identified three additional tumors belonging to this methylation cluster but originally histologically diagnosed otherwise. RNA sequencing for the detection of SLC44A1-PRKCA fusions could be performed on 19 of the tumors, 10 of them belonging to the methylation class PGNT. In two additional cases, SLC44A1-PRKCA fusions were confirmed by FISH. We detected fusions involving PRKCA in all cases of this methylation class with material available for analyses: the canonical SLC44A1-PRKCA fusion was observed in 11/12 tumors, while the remaining case exhibited a NOTCH1-PRKCA fusion. Neither of the fusions was found in the tumors belonging to other methylation classes. Our results point towards a high misclassification rate of the morphological diagnosis PGNT and clearly demonstrate the necessity of molecular analyses. PRKCA fusions are highly diagnostic for PGNT, and detection by RNA sequencing enables the identification of rare fusion partners. Methylation analysis recognizes a unique methylation class PGNT irrespective of the nature of the PRKCA fusion.
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