1
|
Cocchiararo I, Cattaneo O, Rajendran J, Chabry F, Cornut M, Soldati H, Bigot A, Mamchaoui K, Gibertini S, Bouche A, Ham DJ, Laumonier T, Prola A, Castets P. Identification of a muscle-specific isoform of VMA21 as a potent actor in X-linked myopathy with excessive autophagy pathogenesis. Hum Mol Genet 2023; 32:3374-3389. [PMID: 37756622 PMCID: PMC10695681 DOI: 10.1093/hmg/ddad164] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 06/08/2023] [Revised: 08/23/2023] [Accepted: 09/21/2023] [Indexed: 09/29/2023] Open
Abstract
Defective lysosomal acidification is responsible for a large range of multi-systemic disorders associated with impaired autophagy. Diseases caused by mutations in the VMA21 gene stand as exceptions, specifically affecting skeletal muscle (X-linked Myopathy with Excessive Autophagy, XMEA) or liver (Congenital Disorder of Glycosylation). VMA21 chaperones vacuolar (v-) ATPase assembly, which is ubiquitously required for proper lysosomal acidification. The reason VMA21 deficiencies affect specific, but divergent tissues remains unknown. Here, we show that VMA21 encodes a yet-unreported long protein isoform, in addition to the previously described short isoform, which we name VMA21-120 and VMA21-101, respectively. In contrast to the ubiquitous pattern of VMA21-101, VMA21-120 was predominantly expressed in skeletal muscle, and rapidly up-regulated upon differentiation of mouse and human muscle precursors. Accordingly, VMA21-120 accumulated during development, regeneration and denervation of mouse skeletal muscle. In contrast, neither induction nor blockade of autophagy, in vitro and in vivo, strongly affected VMA21 isoform expression. Interestingly, VMA21-101 and VMA21-120 both localized to the sarcoplasmic reticulum of muscle cells, and interacted with the v-ATPase. While VMA21 deficiency impairs autophagy, VMA21-101 or VMA21-120 overexpression had limited impact on autophagic flux in muscle cells. Importantly, XMEA-associated mutations lead to both VMA21-101 deficiency and loss of VMA21-120 expression. These results provide important insights into the clinical diversity of VMA21-related diseases and uncover a muscle-specific VMA21 isoform that potently contributes to XMEA pathogenesis.
Collapse
Affiliation(s)
- Ilaria Cocchiararo
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1 rue Michel Servet, CH-1211 Geneva, Switzerland
| | - Olivia Cattaneo
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1 rue Michel Servet, CH-1211 Geneva, Switzerland
| | - Jayasimman Rajendran
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1 rue Michel Servet, CH-1211 Geneva, Switzerland
| | - Florent Chabry
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1 rue Michel Servet, CH-1211 Geneva, Switzerland
| | - Mélanie Cornut
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1 rue Michel Servet, CH-1211 Geneva, Switzerland
| | - Hadrien Soldati
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1 rue Michel Servet, CH-1211 Geneva, Switzerland
| | - Anne Bigot
- Centre de Recherche en Myologie, Inserm, Institut de Myologie, Sorbonne Université, 47 Bd de l'Hôpital, 75013 Paris, France
| | - Kamel Mamchaoui
- Centre de Recherche en Myologie, Inserm, Institut de Myologie, Sorbonne Université, 47 Bd de l'Hôpital, 75013 Paris, France
| | - Sara Gibertini
- Neuromuscular Diseases and Neuroimmunology Unit, Muscle Cell Biology Lab, Fondazione IRCCS Istituto Neurologico “C. Besta”, Via Amadeo 42, 20133 Milano, Italy
| | - Axelle Bouche
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1 rue Michel Servet, CH-1211 Geneva, Switzerland
- Department of Orthopaedic Surgery, Geneva University Hospitals and Faculty of Medicine, University Medical Center, 1 rue Michel Servet, 1211, Geneva, Switzerland
| | - Daniel J Ham
- Biozentrum, University of Basel, Spitalstrasse 41, 4056 Basel, Switzerland
| | - Thomas Laumonier
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1 rue Michel Servet, CH-1211 Geneva, Switzerland
- Department of Orthopaedic Surgery, Geneva University Hospitals and Faculty of Medicine, University Medical Center, 1 rue Michel Servet, 1211, Geneva, Switzerland
| | - Alexandre Prola
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1 rue Michel Servet, CH-1211 Geneva, Switzerland
| | - Perrine Castets
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1 rue Michel Servet, CH-1211 Geneva, Switzerland
| |
Collapse
|
2
|
Konovalova S, Torregrosa-Muñumer R, Manjunath P, Liu X, Baral S, Fatima K, Holopainen M, Kvist J, Rajendran J, Yang Y, Varjosalo M, Käkelä R, Somerharju P, Tyynismaa H. Small mitochondrial protein NERCLIN regulates cardiolipin homeostasis and mitochondrial ultrastructure. Proc Natl Acad Sci U S A 2023; 120:e2210599120. [PMID: 37463214 PMCID: PMC10372682 DOI: 10.1073/pnas.2210599120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/11/2022] [Accepted: 06/14/2023] [Indexed: 07/20/2023] Open
Abstract
Cardiolipin (CL) is an essential phospholipid for mitochondrial structure and function. Here, we present a small mitochondrial protein, NERCLIN, as a negative regulator of CL homeostasis and mitochondrial ultrastructure. Primate-specific NERCLIN is expressed ubiquitously from the GRPEL2 locus on a tightly regulated low level. NERCLIN overexpression severely disrupts mitochondrial cristae structure and induces mitochondrial fragmentation. Proximity labeling and immunoprecipitation analysis suggested interactions of NERCLIN with CL synthesis and prohibitin complexes on the matrix side of the inner mitochondrial membrane. Lipid analysis indicated that NERCLIN regulates mitochondrial CL content. Furthermore, NERCLIN is responsive to heat stress ensuring OPA1 processing and cell survival. Thus, we propose that NERCLIN contributes to the stress-induced adaptation of mitochondrial dynamics. Our findings add NERCLIN to the group of recently identified small mitochondrial proteins with important regulatory functions.
Collapse
Affiliation(s)
- Svetlana Konovalova
- Stem Cells and Metabolism Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Rubén Torregrosa-Muñumer
- Stem Cells and Metabolism Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
| | - Pooja Manjunath
- Stem Cells and Metabolism Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
| | - Xiaonan Liu
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Sundar Baral
- Stem Cells and Metabolism Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
| | - Kaneez Fatima
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Minna Holopainen
- Molecular and Integrative Biosciences Research Program, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014 Helsinki, Finland
- Helsinki University Lipidomics Unit, Helsinki Institute of Life Science and Biocenter Finland, University of Helsinki, 00014 Helsinki, Finland
| | - Jouni Kvist
- Stem Cells and Metabolism Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
| | - Jayasimman Rajendran
- Stem Cells and Metabolism Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
| | - Yang Yang
- Stem Cells and Metabolism Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
- School of Life and Health Sciences, Faculty of Science, The Chinese University of Hong Kong, 518172 Shenzhen, China
| | - Markku Varjosalo
- Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Reijo Käkelä
- Molecular and Integrative Biosciences Research Program, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014 Helsinki, Finland
- Helsinki University Lipidomics Unit, Helsinki Institute of Life Science and Biocenter Finland, University of Helsinki, 00014 Helsinki, Finland
| | - Pentti Somerharju
- Helsinki University Lipidomics Unit, Helsinki Institute of Life Science and Biocenter Finland, University of Helsinki, 00014 Helsinki, Finland
- Department of Biochemistry and Developmental Biology, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
| | - Henna Tyynismaa
- Stem Cells and Metabolism Research Program, Research Programs Unit, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
| |
Collapse
|
3
|
Purhonen J, Grigorjev V, Ekiert R, Aho N, Rajendran J, Pietras R, Truvé K, Wikström M, Sharma V, Osyczka A, Fellman V, Kallijärvi J. A spontaneous mitonuclear epistasis converging on Rieske Fe-S protein exacerbates complex III deficiency in mice. Nat Commun 2020; 11:322. [PMID: 31949167 PMCID: PMC6965120 DOI: 10.1038/s41467-019-14201-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 12/17/2019] [Indexed: 12/12/2022] Open
Abstract
We previously observed an unexpected fivefold (35 vs. 200 days) difference in the survival of respiratory chain complex III (CIII) deficient Bcs1lp.S78G mice between two congenic backgrounds. Here, we identify a spontaneous homoplasmic mtDNA variant (m.G14904A, mt-Cybp.D254N), affecting the CIII subunit cytochrome b (MT-CYB), in the background with short survival. We utilize maternal inheritance of mtDNA to confirm this as the causative variant and show that it further decreases the low CIII activity in Bcs1lp.S78G tissues to below survival threshold by 35 days of age. Molecular dynamics simulations predict D254N to restrict the flexibility of MT-CYB ef loop, potentially affecting RISP dynamics. In Rhodobacter cytochrome bc1 complex the equivalent substitution causes a kinetics defect with longer occupancy of RISP head domain towards the quinol oxidation site. These findings represent a unique case of spontaneous mitonuclear epistasis and highlight the role of mtDNA variation as modifier of mitochondrial disease phenotypes.
Collapse
Affiliation(s)
- Janne Purhonen
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, P.O. Box 63 (Haartmaninkatu 8), FI-00014, Helsinki, Finland.,Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Vladislav Grigorjev
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, P.O. Box 63 (Haartmaninkatu 8), FI-00014, Helsinki, Finland
| | - Robert Ekiert
- Department of Molecular Biophysics, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, ul. Gronostajowa 7, 30-387, Kraków, Poland
| | - Noora Aho
- Department of Physics, University of Helsinki, P.O. Box 64 (Gustaf Hällströmin katu 2), FI-00014, Helsinki, Finland.,Department of Chemistry, University of Jyväskylä, P.O. Box 35 (Survontie 9B), FI-40014, Jyväskylä, Finland
| | - Jayasimman Rajendran
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, P.O. Box 63 (Haartmaninkatu 8), FI-00014, Helsinki, Finland.,Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Rafał Pietras
- Department of Molecular Biophysics, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, ul. Gronostajowa 7, 30-387, Kraków, Poland
| | - Katarina Truvé
- Sahlgrenska Academy, University of Gothenburg, P.O. Box 413 (Medicinaregatan 3), 41390, Gothenburg, Sweden
| | - Mårten Wikström
- Institute of Biotechnology, University of Helsinki, PL 56 (Viikinkaari 9), FI-00014, Helsinki, Finland
| | - Vivek Sharma
- Department of Physics, University of Helsinki, P.O. Box 64 (Gustaf Hällströmin katu 2), FI-00014, Helsinki, Finland.,Institute of Biotechnology, University of Helsinki, PL 56 (Viikinkaari 9), FI-00014, Helsinki, Finland
| | - Artur Osyczka
- Department of Molecular Biophysics, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, ul. Gronostajowa 7, 30-387, Kraków, Poland
| | - Vineta Fellman
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, P.O. Box 63 (Haartmaninkatu 8), FI-00014, Helsinki, Finland.,Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Department of Clinical Sciences, Pediatrics, BMC F12, Lund University, 221 84, Lund, Sweden.,Children's Hospital, Helsinki University Hospital, P.O. Box 281 (Stenbäckinkatu 11), FI-00029, Helsinki, Finland
| | - Jukka Kallijärvi
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, P.O. Box 63 (Haartmaninkatu 8), FI-00014, Helsinki, Finland. .,Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
| |
Collapse
|
4
|
Rajendran J, Purhonen J, Tegelberg S, Smolander OP, Mörgelin M, Rozman J, Gailus-Durner V, Fuchs H, Hrabe de Angelis M, Auvinen P, Mervaala E, Jacobs HT, Szibor M, Fellman V, Kallijärvi J. Alternative oxidase-mediated respiration prevents lethal mitochondrial cardiomyopathy. EMBO Mol Med 2019; 11:emmm.201809456. [PMID: 30530468 PMCID: PMC6328925 DOI: 10.15252/emmm.201809456] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Alternative oxidase (AOX) is a non‐mammalian enzyme that can bypass blockade of the complex III‐IV segment of the respiratory chain (RC). We crossed a Ciona intestinalis AOX transgene into RC complex III (cIII)‐deficient Bcs1lp.S78G knock‐in mice, displaying multiple visceral manifestations and premature death. The homozygotes expressing AOX were viable, and their median survival was extended from 210 to 590 days due to permanent prevention of lethal cardiomyopathy. AOX also prevented renal tubular atrophy and cerebral astrogliosis, but not liver disease, growth restriction, or lipodystrophy, suggesting distinct tissue‐specific pathogenetic mechanisms. Assessment of reactive oxygen species (ROS) production and damage suggested that ROS were not instrumental in the rescue. Cardiac mitochondrial ultrastructure, mitochondrial respiration, and pathological transcriptome and metabolome alterations were essentially normalized by AOX, showing that the restored electron flow upstream of cIII was sufficient to prevent cardiac energetic crisis and detrimental decompensation. These findings demonstrate the value of AOX, both as a mechanistic tool and a potential therapeutic strategy, for cIII deficiencies.
Collapse
Affiliation(s)
- Jayasimman Rajendran
- Folkhälsan Research Center, Helsinki, Finland.,Clinicum, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Janne Purhonen
- Folkhälsan Research Center, Helsinki, Finland.,Clinicum, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Saara Tegelberg
- Folkhälsan Research Center, Helsinki, Finland.,Department of Clinical Sciences, Lund, Pediatrics, Lund University, Lund, Sweden.,Molecular Neurology Research Program and Neuroscience Center, University of Helsinki, Helsinki, Finland
| | | | - Matthias Mörgelin
- Division of Infection Medicine, Clinical Sciences, Lund University, Lund, Sweden
| | - Jan Rozman
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany.,German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Valerie Gailus-Durner
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Helmut Fuchs
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Martin Hrabe de Angelis
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany.,German Center for Diabetes Research (DZD), Neuherberg, Germany.,Chair of Experimental Genetics, Center of Life and Food Sciences Weihenstephan, TU Munich, Freising-Weihenstephan, Germany
| | - Petri Auvinen
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Eero Mervaala
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Howard T Jacobs
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland.,Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Marten Szibor
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland.,Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Vineta Fellman
- Folkhälsan Research Center, Helsinki, Finland.,Department of Clinical Sciences, Lund, Pediatrics, Lund University, Lund, Sweden.,Children's Hospital, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Jukka Kallijärvi
- Folkhälsan Research Center, Helsinki, Finland .,Clinicum, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| |
Collapse
|
5
|
Purhonen J, Rajendran J, Tegelberg S, Smolander OP, Pirinen E, Kallijärvi J, Fellman V. NAD + repletion produces no therapeutic effect in mice with respiratory chain complex III deficiency and chronic energy deprivation. FASEB J 2018; 32:fj201800090R. [PMID: 29782205 DOI: 10.1096/fj.201800090r] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Biosynthetic precursors of NAD+ can replenish a decreased cellular NAD+ pool and, supposedly via sirtuin (SIRT) deacetylases, improve mitochondrial function. We found decreased hepatic NAD+ concentration and downregulated biosynthesis in Bcs1lp.S78G knock-in mice with respiratory chain complex III deficiency and mitochondrial hepatopathy. Aiming at ameliorating disease progression via NAD+ repletion and improved mitochondrial function, we fed these mice nicotinamide riboside (NR), a NAD+ precursor. A targeted metabolomics verified successful administration and suggested enhanced NAD+ biosynthesis in the treated mice, although hepatic NAD+ concentration was unchanged at the end point. In contrast to our expectations, NR did not improve the hepatopathy, hepatic mitochondrial respiration, or survival of Bcs1lp.S78G mice. We linked this lack of therapeutic effect to NAD+-independent activation of SIRT-1 and -3 via AMPK and cAMP signaling related to the starvation-like metabolic state of Bcs1lp.S78G mice. In summary, we describe an unusual metabolic state with NAD+ depletion accompanied by energy deprivation signals, uncompromised SIRT function, and upregulated oxidative metabolism. Our study highlights that the knowledge of the underlying complex metabolic alterations is critical when designing therapies for mitochondrial dysfunction.-Purhonen, J., Rajendran, J., Tegelberg, S., Smolander, O.-P., Pirinen, E., Kallijärvi, J., Fellman, V. NAD+ repletion produces no therapeutic effect in mice with respiratory chain complex III deficiency and chronic energy deprivation.
Collapse
Affiliation(s)
- Janne Purhonen
- Folkhälsan Research Center, Helsinki, Finland
- Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Jayasimman Rajendran
- Folkhälsan Research Center, Helsinki, Finland
- Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Saara Tegelberg
- Folkhälsan Research Center, Helsinki, Finland
- Pediatrics, Department of Clinical Sciences, Lund University, Lund, Sweden
| | | | - Eija Pirinen
- Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Jukka Kallijärvi
- Folkhälsan Research Center, Helsinki, Finland
- Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Vineta Fellman
- Folkhälsan Research Center, Helsinki, Finland
- Pediatrics, Department of Clinical Sciences, Lund University, Lund, Sweden
- Children's Hospital, University of Helsinki, Finland
| |
Collapse
|
6
|
Anthony B, Azizan F, Chan H, Ganasan P, Prasad R, Rajendran J. Prevalence of Atrial Fibrillation Among the MOPD Patients of Hospital Tuanku Ampuan Najihah, Kuala Pilah. Int J Cardiol 2017. [DOI: 10.1016/j.ijcard.2017.09.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
7
|
Purhonen J, Rajendran J, Mörgelin M, Uusi-Rauva K, Katayama S, Krjutskov K, Einarsdottir E, Velagapudi V, Kere J, Jauhiainen M, Fellman V, Kallijärvi J. Ketogenic diet attenuates hepatopathy in mouse model of respiratory chain complex III deficiency caused by a Bcs1l mutation. Sci Rep 2017; 7:957. [PMID: 28424480 PMCID: PMC5430426 DOI: 10.1038/s41598-017-01109-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 03/23/2017] [Indexed: 02/03/2023] Open
Abstract
Mitochondrial disorders are among the most prevalent inborn errors of metabolism but largely lack treatments and have poor outcomes. High-fat, low-carbohydrate ketogenic diets (KDs) have shown beneficial effects in mouse models of mitochondrial myopathies, with induction of mitochondrial biogenesis as the suggested main mechanism. We fed KD to mice with respiratory chain complex III (CIII) deficiency and progressive hepatopathy due to mutated BCS1L, a CIII assembly factor. The mutant mice became persistently ketotic and tolerated the KD for up to 11 weeks. Liver disease progression was attenuated by KD as shown by delayed fibrosis, reduced cell death, inhibition of hepatic progenitor cell response and stellate cell activation, and normalization of liver enzyme activities. Despite no clear signs of increased mitochondrial biogenesis in the liver, CIII assembly and activity were improved and mitochondrial morphology in hepatocytes normalized. Induction of hepatic glutathione transferase genes and elevated total glutathione level were normalized by KD. Histological findings and transcriptome changes indicated modulation of liver macrophage populations by the mutation and the diet. These results reveal a striking beneficial hepatic response to KD in mice with mitochondrial hepatopathy and warrant further investigations of dietary modification in the management of these conditions in patients.
Collapse
Affiliation(s)
- Janne Purhonen
- Folkhälsan Research Center, Helsinki, Finland.,Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Jayasimman Rajendran
- Folkhälsan Research Center, Helsinki, Finland.,Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Matthias Mörgelin
- Division of Infection Medicine, Clinical Sciences, Lund University, Lund, Sweden
| | | | - Shintaro Katayama
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Kaarel Krjutskov
- Folkhälsan Research Center, Helsinki, Finland.,Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden.,Competence Centre on Health Technologies, Tartu, Estonia.,Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland
| | - Elisabet Einarsdottir
- Folkhälsan Research Center, Helsinki, Finland.,Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden.,Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland
| | - Vidya Velagapudi
- Metabolomics Unit, Institute for Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Juha Kere
- Folkhälsan Research Center, Helsinki, Finland.,Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden.,Molecular Neurology Research Program, University of Helsinki, Helsinki, Finland.,Department of Genetics and Molecular Medicine, King's College London, England, UK
| | | | - Vineta Fellman
- Folkhälsan Research Center, Helsinki, Finland.,Department of Clinical Sciences, Lund, Pediatrics, Lund University, Lund, Sweden.,Children's Hospital, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | | |
Collapse
|
8
|
Rajendran J, Tomašić N, Kotarsky H, Hansson E, Velagapudi V, Kallijärvi J, Fellman V. Effect of High-Carbohydrate Diet on Plasma Metabolome in Mice with Mitochondrial Respiratory Chain Complex III Deficiency. Int J Mol Sci 2016; 17:E1824. [PMID: 27809283 PMCID: PMC5133825 DOI: 10.3390/ijms17111824] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/24/2016] [Accepted: 10/24/2016] [Indexed: 12/30/2022] Open
Abstract
Mitochondrial disorders cause energy failure and metabolic derangements. Metabolome profiling in patients and animal models may identify affected metabolic pathways and reveal new biomarkers of disease progression. Using liver metabolomics we have shown a starvation-like condition in a knock-in (Bcs1lc.232A>G) mouse model of GRACILE syndrome, a neonatal lethal respiratory chain complex III dysfunction with hepatopathy. Here, we hypothesized that a high-carbohydrate diet (HCD, 60% dextrose) will alleviate the hypoglycemia and promote survival of the sick mice. However, when fed HCD the homozygotes had shorter survival (mean ± SD, 29 ± 2.5 days, n = 21) than those on standard diet (33 ± 3.8 days, n = 30), and no improvement in hypoglycemia or liver glycogen depletion. We investigated the plasma metabolome of the HCD- and control diet-fed mice and found that several amino acids and urea cycle intermediates were increased, and arginine, carnitines, succinate, and purine catabolites decreased in the homozygotes. Despite reduced survival the increase in aromatic amino acids, an indicator of liver mitochondrial dysfunction, was normalized on HCD. Quantitative enrichment analysis revealed that glycine, serine and threonine metabolism, phenylalanine and tyrosine metabolism, and urea cycle were also partly normalized on HCD. This dietary intervention revealed an unexpected adverse effect of high-glucose diet in complex III deficiency, and suggests that plasma metabolomics is a valuable tool in evaluation of therapies in mitochondrial disorders.
Collapse
Affiliation(s)
- Jayasimman Rajendran
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, 00014 Helsinki, Finland.
- Institute of Clinical Medicine, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland.
| | - Nikica Tomašić
- Department of Clinical Sciences, Lund, Pediatrics, Lund University, 22185 Lund, Sweden.
- Department of Neonatology, Karolinska University Hospital, 17176 Solna, Sweden.
| | - Heike Kotarsky
- Department of Clinical Sciences, Lund, Pediatrics, Lund University, 22185 Lund, Sweden.
| | - Eva Hansson
- Department of Clinical Sciences, Lund, Pediatrics, Lund University, 22185 Lund, Sweden.
| | - Vidya Velagapudi
- Finnish Institute of Molecular Medicine, University of Helsinki, 00290 Helsinki, Finland.
| | - Jukka Kallijärvi
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, 00014 Helsinki, Finland.
| | - Vineta Fellman
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, 00014 Helsinki, Finland.
- Department of Clinical Sciences, Lund, Pediatrics, Lund University, 22185 Lund, Sweden.
- Institute of Clinical medicine, Children's Hospital, Helsinki University Hospital and University of Helsinki, 00029 Helsinki, Finland.
| |
Collapse
|
9
|
Williams MJ, Goergen P, Rajendran J, Zheleznyakova G, Hägglund MG, Perland E, Bagchi S, Kalogeropoulou A, Khan Z, Fredriksson R, Schiöth HB. Obesity-linked homologues TfAP-2 and Twz establish meal frequency in Drosophila melanogaster. PLoS Genet 2014; 10:e1004499. [PMID: 25187989 PMCID: PMC4154645 DOI: 10.1371/journal.pgen.1004499] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 05/27/2014] [Indexed: 12/21/2022] Open
Abstract
In all animals managing the size of individual meals and frequency of feeding is crucial for metabolic homeostasis. In the current study we demonstrate that the noradrenalin analogue octopamine and the cholecystokinin (CCK) homologue Drosulfakinin (Dsk) function downstream of TfAP-2 and Tiwaz (Twz) to control the number of meals in adult flies. Loss of TfAP-2 or Twz in octopaminergic neurons increased the size of individual meals, while overexpression of TfAP-2 significantly decreased meal size and increased feeding frequency. Of note, our study reveals that TfAP-2 and Twz regulate octopamine signaling to initiate feeding; then octopamine, in a negative feedback loop, induces expression of Dsk to inhibit consummatory behavior. Intriguingly, we found that the mouse TfAP-2 and Twz homologues, AP-2β and Kctd15, co-localize in areas of the brain known to regulate feeding behavior and reward, and a proximity ligation assay (PLA) demonstrated that AP-2β and Kctd15 interact directly in a mouse hypothalamus-derived cell line. Finally, we show that in this mouse hypothalamic cell line AP-2β and Kctd15 directly interact with Ube2i, a mouse sumoylation enzyme, and that AP-2β may itself be sumoylated. Our study reveals how two obesity-linked homologues regulate metabolic homeostasis by modulating consummatory behavior. The size of individual meals and feeding frequency are important for homeostatic control. Due to the complex neuroendocrine system regulating human food intake it is difficult to uncover the mechanisms underlying eating disorders. The genetically tractable model system Drosophila melanogaster has a comparatively simple brain; yet, similar to humans, its eating behavior can adapt to respond to nutritional needs. Our study describes how the obesity-linked homologues TfAP-2 (human TFAP2B) and Tiwaz (human KCTD15) regulate a unique feedback system involving noradrenalin-like octopamine and the CCK homolog Dsk, that exert positive and negative effects on Drosophila feeding behavior. Our findings provide insight into how two conserved obesity-linked genes regulate feeding behavior in order to maintain metabolic balance.
Collapse
Affiliation(s)
- Michael J. Williams
- Functional Pharmacology, Department of Neuroscience, Uppsala University, Uppsala, Sweden
- * E-mail:
| | - Philip Goergen
- Functional Pharmacology, Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Jayasimman Rajendran
- Functional Pharmacology, Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Galina Zheleznyakova
- Functional Pharmacology, Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Maria G. Hägglund
- Functional Pharmacology, Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Emelie Perland
- Functional Pharmacology, Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Sonchita Bagchi
- Functional Pharmacology, Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Argyro Kalogeropoulou
- Functional Pharmacology, Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Zaid Khan
- Functional Pharmacology, Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Robert Fredriksson
- Functional Pharmacology, Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Helgi B. Schiöth
- Functional Pharmacology, Department of Neuroscience, Uppsala University, Uppsala, Sweden
| |
Collapse
|
10
|
Gao W, Nyflot M, Rajendran J, Hendrickson K, Krohn K. Local Recurrence and Progression Is Spatially Correlated With Focal Pretreatment FMISO PET Uptake in Head and Neck SCC. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
11
|
Jameson MB, McKeage MJ, Ramanathan RK, Rajendran J, Gu Y, Wilson WR, Melink TJ, Tchekmedyian NS. Final results of a phase Ib trial of PR104, a pre-prodrug of the bioreductive prodrug PR104A, in combination with gemcitabine (G) or docetaxel (D) in patients with advanced solid tumors. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.2554] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
12
|
Tchekmedyian NS, Ramanathan RK, McKeage MJ, Rajendran J, Korn RL, Melink TJ, Gutheil JC, Jameson MB. Phase Ib study of PR-104, a hypoxia-activated alkylating agent, in combination with gemcitabine (G) or docetaxel (D) in patients with advanced cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.3575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
13
|
Nurani R, Rajendran J, Austin-Seymour M, Scharnhorst J, Krohn K, Laramore G. The Predictive Utility of PET-Misonidazole in Locally Advanced Head and Neck Cancer Treated with Radiotherapy. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.06.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
14
|
Hendrickson K, Rajendran J, Ford E, Kinahan P, Lewellen B, Phillips M, Krohn K. SU-FF-J-106: FMISO-PET Hypoxia Imaging: A Novel Method to Plan IMRT-Based Boost Radiation to Hypoxic Subvolumes. Med Phys 2005. [DOI: 10.1118/1.1997652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
15
|
Schwartz D, Ford E, Meyer J, Rajendran J, Lewellen B, Yueh B, Coltrera M, Virgin J, Anzai Y, Kinahan P, Phillips M, Krohn K. Co-registered FDG-PET/CT imaging for staging and IMRT treatment planning for squamous cell carcinoma of the head and neck. Int J Radiat Oncol Biol Phys 2003. [DOI: 10.1016/s0360-3016(03)00931-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
16
|
Affiliation(s)
- J Rajendran
- Division of Nuclear Medicine, Harborview Medical Center, Seattle, Washington 98104, USA
| | | |
Collapse
|
17
|
Affiliation(s)
- D H Lewis
- Department of Radiology, Harborview Medical Center, University of Washington School of Medicine, Seattle 98104-2499, USA
| | | | | |
Collapse
|