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Yan S, Ren J, Su H, Ma J, He W, Cai X, Sun D. Novel heterozygous variant of ADPRHL2 causes pathogenic variation in CONDSIAS. Heliyon 2024; 10:e32945. [PMID: 39100487 PMCID: PMC11295978 DOI: 10.1016/j.heliyon.2024.e32945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 06/12/2024] [Accepted: 06/12/2024] [Indexed: 08/06/2024] Open
Abstract
Adprhl2 (OMIM: 610624) mutation associated stress-induced childhood-onset neurodegeneration with variable ataxia and seizures (CONDSIAS, OMIM: 618170) is a sporadic neurodegenerative disease with poor prognosis. ADPRHL2 encodes ADP-ribosylhydrolase 3 (ARH3), which participates in ADP-ribosylation to remove poly-ADP ribose (PAR). We found a new compound heterozygous mutation in the ADPRHL2 gene c.580C > T (p.Gln194Ter) and c.803-1G > A in a 30-month-old boy, who showed gait instability, abnormal EEG, and developmental delay after respiratory infection. He died of convulsions 4 months after onset. By constructing a mutant plasmid and using Western blot to detect the expression of ARH3 and PAR, it was demonstrated that the ADPRHL2 gene c.580C > T (p.Gln194Ter) and c.803-1G > A is pathogenic according to ACMG guidelines.
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Affiliation(s)
- Shuang Yan
- Department of Neurology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Jie Ren
- Department of Emergency and Critical Care Center, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Hongting Su
- Department of Neurology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Jiehui Ma
- Department of Neurology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Weijie He
- Aegicare (Shenzhen) Technology Co., Ltd., Shenzhen, China
| | - Xiaofang Cai
- Department of Emergency and Critical Care Center, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
| | - Dan Sun
- Department of Neurology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, China
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Feijs-Žaja KLH, Ikenga NJ, Žaja R. Pathological and physiological roles of ADP-ribosylation: established functions and new insights. Biol Chem 2024:hsz-2024-0057. [PMID: 39066732 DOI: 10.1515/hsz-2024-0057] [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: 04/12/2024] [Accepted: 07/09/2024] [Indexed: 07/30/2024]
Abstract
The posttranslational modification of proteins with poly(ADP-ribose) was discovered in the sixties. Since then, we have learned that the enzymes involved, the so-called poly(ADP-ribosyl)polymerases (PARPs), are transferases which use cofactor NAD+ to transfer ADP-ribose to their targets. Few PARPs are able to create poly(ADP-ribose), whereas the majority transfers a single ADP-ribose. In the last decade, hydrolases were discovered which reverse mono(ADP-ribosyl)ation, detection methods were developed and new substrates were defined, including nucleic acids. Despite the continued effort, relatively little is still known about the biological function of most PARPs. In this review, we summarise key functions of ADP-ribosylation and introduce emerging insights.
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Affiliation(s)
- Karla L H Feijs-Žaja
- 9165 Institute of Biochemistry and Molecular Biology, RWTH Aachen University , Pauwelsstrasse 30, D-52074 Aachen, Germany
| | - Nonso J Ikenga
- 9165 Institute of Biochemistry and Molecular Biology, RWTH Aachen University , Pauwelsstrasse 30, D-52074 Aachen, Germany
| | - Roko Žaja
- 9165 Institute of Biochemistry and Molecular Biology, RWTH Aachen University , Pauwelsstrasse 30, D-52074 Aachen, Germany
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Bannister M, Bray S, Aggarwal A, Billington C, Nguyen HD. A novel variant in ADPRS disrupts ARH3 stability and subcellular localization in children with neurodegeneration and respiratory failure. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.14.597428. [PMID: 38915701 PMCID: PMC11195236 DOI: 10.1101/2024.06.14.597428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Purpose ADP-ribosylation is a post-translational modification involving the transfer of one or more ADP-ribose units from NAD+ to target proteins. Dysregulation of ADP-ribosylation is implicated in neurodegenerative diseases. Here we report a novel homozygous variant in the ADPRS gene (c.545A>G, p.His182Arg) encoding the mono(ADP-ribosyl) hydrolase ARH3 found in 2 patients with childhood-onset neurodegeneration with stress-induced ataxia and seizures (CONDSIAS). Methods Genetic testing via exome sequencing was used to identify the underlying disease cause in two siblings with developmental delay, seizures, progressive muscle weakness, and respiratory failure following an episodic course. Studies in a cell culture model uncover biochemical and cellular consequences of the identified genetic change. Results The ARH3 H182R variant affects a highly conserved residue in the active site of ARH3, leading to protein instability, degradation, and reduced expression. ARH3 H182R additionally fails to localize to the nucleus. The combination of reduced expression and mislocalization of ARH3 H182R resulted in accumulation of mono-ADP ribosylated species in cells. Conclusions The children's clinical course combined with the biochemical characterization of their genetic variant develops our understanding of the pathogenic mechanisms driving CONDSIAS and highlights a critical role for ARH3-regulated ADP ribosylation in nervous system integrity.
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Öz Yıldız S, Yalnızoğlu D, Şimsek Kiper PÖ, Göçmen R, Soğukpınar M, Utine GE, Haliloğlu G. Delineation of ADPRHL2 Variants: Report of Two New Patients with Review of the Literature. Neuropediatrics 2024; 55:156-165. [PMID: 38365196 DOI: 10.1055/s-0044-1779618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
ADPRHL2 is involved in posttranslational modification and is known to have a role in physiological functions such as cell signaling, DNA repair, gene control, cell death, and response to stress. Recently, a group of neurological disorders due to ADPRHL2 variants is described, characterized by childhood-onset, stress-induced variable movement disorders, neuropathy, seizures, and neurodegenerative course. We present the diagnostic pathway of two pediatric patients with episodic dystonia and ataxia, who later had a neurodegenerative course complicated by central hypoventilation syndrome due to the same homozygous ADPRHL2 variant. We conducted a systematic literature search and data extraction procedure following the Preferred Reporting Items for Systematic Review and Meta-Analysis 2020 statement in terms of patients with ADPRHL2 variants, from 2018 up to 3 February, 2023. In total, 12 articles describing 47 patients were included in the final analysis. Median age at symptom onset was 2 (0.7-25) years, with the most common presenting symptoms being gait problems (n = 19, 40.4%), seizures (n = 16, 34%), ataxia (n = 13, 27.6%), and weakness (n = 10, 21.2%). Triggering factors (28/47; 59.5%) and regression (28/43; 60.4%), axonal polyneuropathy (9/23; 39.1%), and cerebral and cerebellar atrophy with white matter changes (28/36; 77.7%) were the other clues. The fatality rate and median age of death were 44.6% (n = 21) and 7 (2-34) years, respectively. ADPRHL2 variants should be considered in the context of episodic, stress-induced pediatric and adult-onset movement disorders and seizures.
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Affiliation(s)
- Sibel Öz Yıldız
- Division of Pediatric Neurology, Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Dilek Yalnızoğlu
- Division of Pediatric Neurology, Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Pelin Özlem Şimsek Kiper
- Division of Pediatric Genetics, Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Rahşan Göçmen
- Department of Radiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Merve Soğukpınar
- Division of Pediatric Genetics, Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Gülen Eda Utine
- Division of Pediatric Genetics, Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Göknur Haliloğlu
- Division of Pediatric Neurology, Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey
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Lindskov FO, Karlsson WK, Skovbølling SL, Nielsen EN, Dunø M, Stokholm J, Henriksen OM, Langkilde AR, Nielsen JE. Expanding the Spectrum of Stress-Induced Childhood-Onset Neurodegeneration with Variable Ataxia and Seizures (CONDSIAS). CEREBELLUM (LONDON, ENGLAND) 2024; 23:861-871. [PMID: 37392332 DOI: 10.1007/s12311-023-01582-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/25/2023] [Indexed: 07/03/2023]
Abstract
Stress-induced childhood-onset neurodegeneration with variable ataxia and seizures (CONDSIAS) is an extremely rare, autosomal recessive neurodegenerative disorder. It is caused by biallelic pathogenic variants in the ADPRS gene, which encodes an enzyme involved in DNA repair, and is characterized by exacerbations in relation to physical or emotional stress, and febrile illness. We report a 24-year-old female, who was compound heterozygous for two novel pathogenic variants revealed by whole exome sequencing. Additionally, we summarize the published cases of CONDSIAS. In our patient, onset of symptoms occurred at 5 years of age and consisted of episodes of truncal dystonic posturing, followed half a year later by sudden diplopia, dizziness, ataxia, and gait instability. Progressive hearing loss, urinary urgency, and thoracic kyphoscoliosis ensued. Present neurological examination revealed dysarthria, facial mini-myoclonus, muscle weakness and atrophy of hands and feet, leg spasticity with clonus, truncal and appendicular ataxia, and spastic-ataxic gait. Hybrid [18F]-fluorodeoxyglucose (FDG) positron emission tomography/magnetic resonance imaging (PET/MRI) of the brain revealed cerebellar atrophy, particularly of the vermis, with corresponding hypometabolism. MRI of the spinal cord showed mild atrophy. After informed consent from the patient, we initiated experimental, off-label treatment with minocycline, a poly-ADP-polymerase (PARP) inhibitor, which has shown beneficial effects in a Drosophila fly model. The present case report expands the list of known pathogenic variants in CONDIAS and presents details of the clinical phenotype. Future studies will reveal whether PARP inhibition is an effective treatment strategy for CONDIAS.
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Affiliation(s)
- Filippa Orlien Lindskov
- Department of Neurology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Neurogenetics Clinic & Research Lab, Danish Dementia Research Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | | | - Sara Lyngby Skovbølling
- Department of Neurology, Copenhagen University Hospital, Bispebjerg Hospital, Copenhagen, Denmark
| | - Emilie Neerup Nielsen
- Department of Clinical Genetics, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Morten Dunø
- Department of Clinical Genetics, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Jette Stokholm
- Department of Neurology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Otto Mølby Henriksen
- Department of Clinical Physiology and Nuclear Medicine, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Annika Reynberg Langkilde
- Department of Radiology, Diagnostic Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Jørgen Erik Nielsen
- Department of Neurology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Neurogenetics Clinic & Research Lab, Danish Dementia Research Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
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Ishiwata-Endo H, Kato J, Yamashita S, Chea C, Koike K, Lee DY, Moss J. ARH Family of ADP-Ribose-Acceptor Hydrolases. Cells 2022; 11:3853. [PMID: 36497109 PMCID: PMC9738213 DOI: 10.3390/cells11233853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/17/2022] [Accepted: 11/26/2022] [Indexed: 12/05/2022] Open
Abstract
The ARH family of ADP-ribose-acceptor hydrolases consists of three 39-kDa members (ARH1-3), with similarities in amino acid sequence. ARH1 was identified based on its ability to cleave ADP-ribosyl-arginine synthesized by cholera toxin. Mammalian ADP-ribosyltransferases (ARTCs) mimicked the toxin reaction, with ARTC1 catalyzing the synthesis of ADP-ribosyl-arginine. ADP-ribosylation of arginine was stereospecific, with β-NAD+ as substrate and, α-anomeric ADP-ribose-arginine the reaction product. ARH1 hydrolyzed α-ADP-ribose-arginine, in addition to α-NAD+ and O-acetyl-ADP-ribose. Thus, ADP-ribose attached to oxygen-containing or nitrogen-containing functional groups was a substrate. Arh1 heterozygous and knockout (KO) mice developed tumors. Arh1-KO mice showed decreased cardiac contractility and developed myocardial fibrosis. In addition to Arh1-KO mice showed increased ADP-ribosylation of tripartite motif-containing protein 72 (TRIM72), a membrane-repair protein. ARH3 cleaved ADP-ribose from ends of the poly(ADP-ribose) (PAR) chain and released the terminal ADP-ribose attached to (serine)protein. ARH3 also hydrolyzed α-NAD+ and O-acetyl-ADP-ribose. Incubation of Arh3-KO cells with H2O2 resulted in activation of poly-ADP-ribose polymerase (PARP)-1, followed by increased nuclear PAR, increased cytoplasmic PAR, leading to release of Apoptosis Inducing Factor (AIF) from mitochondria. AIF, following nuclear translocation, stimulated endonucleases, resulting in cell death by Parthanatos. Human ARH3-deficiency is autosomal recessive, rare, and characterized by neurodegeneration and early death. Arh3-KO mice developed increased brain infarction following ischemia-reperfusion injury, which was reduced by PARP inhibitors. Similarly, PARP inhibitors improved survival of Arh3-KO cells treated with H2O2. ARH2 protein did not show activity in the in vitro assays described above for ARH1 and ARH3. ARH2 has a restricted tissue distribution, with primary involvement of cardiac and skeletal muscle. Overall, the ARH family has unique functions in biological processes and different enzymatic activities.
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Affiliation(s)
- Hiroko Ishiwata-Endo
- Laboratory of Translational Research, Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jiro Kato
- Laboratory of Translational Research, Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Sachiko Yamashita
- Laboratory of Translational Research, Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Chanbora Chea
- Laboratory of Translational Research, Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Kazushige Koike
- Laboratory of Translational Research, Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Duck-Yeon Lee
- Biochemistry Core, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Joel Moss
- Laboratory of Translational Research, Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
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Bajaj S, Shah P, Shah A, Setty PN, Seenappa V, Hingwala D. An Indian Child with CONDSIAS Due to a Novel Variant in ADPRHL2 Gene. Ann Indian Acad Neurol 2022; 25:1190-1192. [PMID: 36911439 PMCID: PMC9996498 DOI: 10.4103/aian.aian_558_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 07/24/2022] [Accepted: 07/29/2022] [Indexed: 11/04/2022] Open
Affiliation(s)
- Shruti Bajaj
- The Purple Gene Clinic, Mumbai, Maharashtra, India
| | - Poornima Shah
- Dr. Poornima's Neurodiagnosis Clinic, Mumbai, Maharashtra, India
| | - Amit Shah
- Criticare Hospital, Mumbai, Maharashtra, India
| | - Phani N. Setty
- Division of Molecular Genetics, LifeCell International Pvt Ltd, Chennai, Tamil Nadu, India
| | - Venu Seenappa
- Division of Molecular Genetics, LifeCell International Pvt Ltd, Chennai, Tamil Nadu, India
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Ozturk G, Ayaz A, Topcu Y, Akyuz G, Unver O, Akbeyaz IH, Ekinci G, Turkdogan D. Stress-induced Childhood Onset Neurodegeneration with Ataxia and Seizures (CONDSIAS) Presenting with Torticollis Attacks: Phenotypic Variability of the Same Mutation in Two Turkish Patients. Ann Indian Acad Neurol 2022; 25:292-294. [PMID: 35693655 PMCID: PMC9175411 DOI: 10.4103/aian.aian_314_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 07/12/2021] [Accepted: 07/19/2021] [Indexed: 11/16/2022] Open
Affiliation(s)
- Gulten Ozturk
- Marmara University Medical Faculty Pendik Education and Research Hospital, Department of Pediatric Neurology, Istanbul, Turkey
| | - Akif Ayaz
- Medipol University Department of Medical Genetics, Istanbul, Turkey
| | - Yasemin Topcu
- Medipol University Department of Medical Genetics, Istanbul, Turkey
| | - Gülcan Akyuz
- Marmara University Medical Faculty Pendik Education and Research Hospital, Department of Pediatric Neurology, Istanbul, Turkey
| | - Olcay Unver
- Marmara University Medical Faculty Pendik Education and Research Hospital, Department of Pediatric Neurology, Istanbul, Turkey
| | - Ismail Hakk Akbeyaz
- Marmara University Medical Faculty Pendik Education and Research Hospital, Department of Pediatric Neurology, Istanbul, Turkey
| | - Gazanfer Ekinci
- Marmara University Medical Faculty Pendik Education and Research Hospital, Department of Pediatric Neurology, Istanbul, Turkey
| | - Dilsad Turkdogan
- Marmara University Medical Faculty Pendik Education and Research Hospital, Department of Pediatric Neurology, Istanbul, Turkey
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Lu A, Dong C, Chen B, Xie L, Hu H. Case Report: Stress-Induced Childhood-Onset Neurodegeneration With Ataxia-Seizures Syndrome Caused by a Novel Compound Heterozygous Mutation in ADPRHL2. Front Neurol 2022; 13:807291. [PMID: 35222245 PMCID: PMC8874324 DOI: 10.3389/fneur.2022.807291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 01/10/2022] [Indexed: 11/13/2022] Open
Abstract
ADPRHL2 gene mutations have been demonstrated as the cause of stress-induced childhood-onset neurodegeneration with variable ataxia and seizures (CONDSIAS), an autosomal recessive genetic disorder characterized by an abnormal gait, intellectual disability, seizures, ataxia, other nervous system degenerative diseases, and axonal sensorimotor neuropathy. Since first reported in 2018, ADP-ribosylhydrolase like 2 (ADPRHL2) gene mutations in previous cases were all diallelic homozygous. Here, we report a case of CONDSIAS with a novel compound heterozygous mutation in the ADPRHL2 gene. This patient is presented with autonomic nervous dysfunction manifested as polyuria, gastrointestinal disturbance, and sinus arrhythmia, which may be considered as new clinical manifestations in addition to the above classical manifestations. Muscle biopsy revealed myogenic lesions, which is a previously unreported feature.
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Affiliation(s)
- Aijun Lu
- Weifang Medical University, Weifang, China
| | - Chunxia Dong
- The 960th Hospital of People's Liberation Army (PLA), Jinan, China
| | | | - Lei Xie
- Weifang Medical University, Weifang, China
| | - Huaiqiang Hu
- The 960th Hospital of People's Liberation Army (PLA), Jinan, China
- *Correspondence: Huaiqiang Hu
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