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Zhong S, Lian Y, Zhou B, Ren R, Duan L, Pan Y, Gong Y, Wu X, Cheng D, Zhang P, Lu B, Wang X, Ding J. Microglia contribute to polyG-dependent neurodegeneration in neuronal intranuclear inclusion disease. Acta Neuropathol 2024; 148:21. [PMID: 39150562 DOI: 10.1007/s00401-024-02776-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 07/04/2024] [Accepted: 07/27/2024] [Indexed: 08/17/2024]
Abstract
Neuronal intranuclear inclusion disease (NIID) is a neurodegenerative disorder caused by the expansion of GGC trinucleotide repeats in NOTCH2NLC gene. Despite identifying uN2CpolyG, a toxic polyglycine (polyG) protein translated by expanded GGC repeats, the exact pathogenic mechanisms of NIID remain unclear. In this study, we investigated the role of polyG by expressing various forms of NOTCH2NLC in mice: the wild-type, the expanded form with 100 GGC repeats (either translating or not translating into uN2CpolyG), and the mutated form that encodes a pure polyG without GGC-repeat RNA and the C-terminal stretch (uN2CpolyG-dCT). Both uN2CpolyG and uN2CpolyG-dCT induced the formation of inclusions composed by filamentous materials and resulted in neurodegenerative phenotypes in mice, including impaired motor and cognitive performance, shortened lifespan, and pathologic lesions such as white-matter lesions, microgliosis, and astrogliosis. In contrast, expressing GGC-repeat RNA alone was non-pathogenic. Through bulk and single-nuclei RNA sequencing, we identified common molecular signatures linked to the expression of uN2CpolyG and uN2CpolyG-dCT, particularly the upregulation of inflammation and microglia markers, and the downregulation of immediate early genes and splicing factors. Importantly, microglia-mediated inflammation was visualized in NIID patients using positron emission tomography, correlating with levels of white-matter atrophy. Furthermore, microglia ablation ameliorated neurodegenerative phenotypes and transcriptional alterations in uN2CpolyG-expressing mice but did not affect polyG inclusions. Together, these results demonstrate that polyG is crucial for the pathogenesis of NIID and highlight the significant role of microglia in polyG-induced neurodegeneration.
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Affiliation(s)
- Shaoping Zhong
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Yangye Lian
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Binbin Zhou
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Ruiqing Ren
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Lewei Duan
- Shanghai Medical College, Fudan University, Shanghai, China
| | - Yuyin Pan
- Department of Neurology at Huashan Hospital, State Key Laboratory of Medical Neurobiology, School of Life Sciences, Fudan University, Shanghai, China
| | - Yuchen Gong
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoling Wu
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Dengfeng Cheng
- Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Puming Zhang
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Boxun Lu
- Department of Neurology at Huashan Hospital, State Key Laboratory of Medical Neurobiology, School of Life Sciences, Fudan University, Shanghai, China
| | - Xin Wang
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
- The State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan University, Shanghai, China
| | - Jing Ding
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China.
- CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai, China.
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Watanabe K, Bunai T, Sakamoto M, Ishigaki S, Iwakura T, Ohashi N, Wakatsuki R, Takenouchi A, Iwaizumi M, Hotta Y, Saida K, Koshimizu E, Miyatake S, Saitsu H, Matsumoto N, Nakamura T. A family with neuronal intranuclear inclusion disease with focal segmental glomerulosclerosis. J Neurol 2024:10.1007/s00415-024-12593-w. [PMID: 39078482 DOI: 10.1007/s00415-024-12593-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 07/17/2024] [Accepted: 07/18/2024] [Indexed: 07/31/2024]
Abstract
BACKGROUND Neuronal intranuclear inclusion disease (NIID) is a rare neurodegenerative disease caused by the expansion of GGC repeats in the 5'-untranslated region (5'-UTR) of NOTCH2NLC. Although increasing evidence suggests that NIID affects various organs, its association with renal involvement remains unclear. We studied the genetic background of a family with NIID, in which four of five members presented with proteinuria as the initial manifestation. The renal pathology of three patients was diagnosed as focal segmental glomerulosclerosis (FSGS) at a previous hospital. These patients also presented with tremors, retinal degeneration, and episodic neurological events. Finally, one patient exhibited reversible bilateral thalamic high-intensity signal changes on diffusion-weighted imaging during episodic neurological events. METHODS Exome sequencing (ES) and nanopore long-read whole-genome sequencing (LR-WGS) were performed on the index case, followed by nanopore target sequencing using Cas9-mediated PCR-free enrichment and methylation analysis. RESULTS ES revealed no candidate variants; however, nanopore LR-WGS in the index case revealed expansion of short tandem repeats (STR) in NOTCH2NLC. Subsequent nanopore target sequencing using Cas9-mediated PCR-free enrichment showed STR expansion of NOTCH2NLC in an affected sibling and asymptomatic father. Methylation analysis using nanopore data revealed hypermethylation of the expanded allele in the asymptomatic father and partial hypermethylation in a mildly symptomatic sibling, whereas the expanded allele was hypomethylated in the index case. CONCLUSIONS This investigation expands the clinical spectrum of NIID, suggesting that STR expansion of NOTCH2NLC is a cause of renal diseases, including FSGS.
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Affiliation(s)
- Kazuki Watanabe
- Department of Neurology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan
- Department of Biochemistry, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan
| | - Tomoyasu Bunai
- Department of Neurology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan
| | - Masamune Sakamoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-Ku, Yokohama, 236-0004, Japan
- Department of Rare Disease Genomics, Yokohama City University Hospital, 3-9 Fukuura, Kanazawa-Ku, Yokohama, 236-0004, Japan
| | - Sayaka Ishigaki
- Department of Nephrology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan
| | - Takamasa Iwakura
- Department of Nephrology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan
| | - Naro Ohashi
- Department of Nephrology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan
| | - Rie Wakatsuki
- Department of Neurology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan
| | - Akiyuki Takenouchi
- Department of Neurology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan
| | - Moriya Iwaizumi
- Department of Laboratory Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, Shizuoka, 431-3125, Japan
| | - Yoshihiro Hotta
- Department of Ophthalmology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, Shizuoka, 431-3125, Japan
| | - Ken Saida
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-Ku, Yokohama, 236-0004, Japan
| | - Eriko Koshimizu
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-Ku, Yokohama, 236-0004, Japan
| | - Satoko Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-Ku, Yokohama, 236-0004, Japan
- Department of Clinical Genetics, Yokohama City University Hospital, 3-9 Fukuura, Kanazawa-Ku, Yokohama, 236-0004, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-Ku, Yokohama, 236-0004, Japan.
| | - Tomohiko Nakamura
- Department of Neurology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan.
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Zhu R, Qu J, Xu G, Wu Y, Xin J, Wang D. Clinical and multimodal imaging features of adult-onset neuronal intranuclear inclusion disease. Neurol Sci 2024:10.1007/s10072-024-07699-y. [PMID: 39023713 DOI: 10.1007/s10072-024-07699-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Accepted: 07/09/2024] [Indexed: 07/20/2024]
Abstract
OBJECTIVES This study aimed to analyze the clinical and multimodal imaging manifestations of adult-onset neuronal intranuclear inclusion disease (NIID) patients and to investigate NIID-specific neuroimaging biomarkers. METHODS Forty patients were retrospectively enrolled from the Qilu Hospital of Shandong University. We analyzed the clinical and imaging characteristics of 40 adult-onset NIID patients and investigated the correlation between these characteristics and genetic markers and neuropsychological scores. We further explored NIID-specific alterations using multimodal imaging indices, including diffusion tensor imaging (DTI), magnetic resonance spectroscopy (MRS), and brain age estimation. In addition, we summarized the dynamic evolution pattern of NIID by examining the changes in diffusion weighted imaging (DWI) signals over time. RESULTS The NIID patients' ages ranged from 31 to 77 years. Cognitive impairment was the most common symptom (30/40, 75.0%), while some patients (18/40, 45.0%) initially presented with episodic symptoms such as headache (10/40, 25.0%). Patients with cognitive impairment symptoms had more cerebral white matter damage (χ2 = 11.475, P = 0.009). The most prevalent imaging manifestation was a high signal on DWI in the corticomedullary junction area, which was observed in 80.0% (32/40) of patients. In addition, the DWI dynamic evolution patterns could be classified into four main patterns. Diffusion tensor imaging (DTI) revealed extensive thinning of cerebral white matter fibers. The estimated brain age surpassed the patient's chronological age, signifying advanced brain aging in NIID patients. CONCLUSIONS The clinical manifestations of NIID exhibit significant variability, usually leading to misdiagnosis. Our results provided new imaging perspectives for accurately diagnosing and exploring this disease's neuropathological mechanisms.
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Affiliation(s)
- Rui Zhu
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Junyu Qu
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Guihua Xu
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Yongsheng Wu
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Jiaxiang Xin
- MR Research Collaboration, Siemens Healthineers Ltd, Shanghai, China
| | - Dawei Wang
- Department of Radiology, Qilu Hospital of Shandong University, Jinan, 250012, China.
- Qilu Medical Imaging Institute of Shandong University, Jinan, 250012, China.
- Shandong Key Laboratory: Magnetic Field-free Medicine & Functional Imaging (MF), Jinan, 250012, China.
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Vegezzi E, Ishiura H, Bragg DC, Pellerin D, Magrinelli F, Currò R, Facchini S, Tucci A, Hardy J, Sharma N, Danzi MC, Zuchner S, Brais B, Reilly MM, Tsuji S, Houlden H, Cortese A. Neurological disorders caused by novel non-coding repeat expansions: clinical features and differential diagnosis. Lancet Neurol 2024; 23:725-739. [PMID: 38876750 DOI: 10.1016/s1474-4422(24)00167-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 04/04/2024] [Accepted: 04/09/2024] [Indexed: 06/16/2024]
Abstract
Nucleotide repeat expansions in the human genome are a well-known cause of neurological disease. In the past decade, advances in DNA sequencing technologies have led to a better understanding of the role of non-coding DNA, that is, the DNA that is not transcribed into proteins. These techniques have also enabled the identification of pathogenic non-coding repeat expansions that cause neurological disorders. Mounting evidence shows that adult patients with familial or sporadic presentations of epilepsy, cognitive dysfunction, myopathy, neuropathy, ataxia, or movement disorders can be carriers of non-coding repeat expansions. The description of the clinical, epidemiological, and molecular features of these recently identified non-coding repeat expansion disorders should guide clinicians in the diagnosis and management of these patients, and help in the genetic counselling for patients and their families.
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Affiliation(s)
| | - Hiroyuki Ishiura
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - D Cristopher Bragg
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - David Pellerin
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology and The National Hospital for Neurology and Neurosurgery, London, UK; Department of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada
| | - Francesca Magrinelli
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology and The National Hospital for Neurology and Neurosurgery, London, UK
| | - Riccardo Currò
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology and The National Hospital for Neurology and Neurosurgery, London, UK; Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
| | - Stefano Facchini
- IRCCS Mondino Foundation, Pavia, Italy; Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology and The National Hospital for Neurology and Neurosurgery, London, UK
| | - Arianna Tucci
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology and The National Hospital for Neurology and Neurosurgery, London, UK; William Harvey Research Institute, Queen Mary University of London, London, UK
| | - John Hardy
- Department of Neurogedengerative Disease, UCL Queen Square Institute of Neurology and The National Hospital for Neurology and Neurosurgery, London, UK
| | - Nutan Sharma
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Matt C Danzi
- Department of Human Genetics and Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Stephan Zuchner
- Department of Human Genetics and Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Bernard Brais
- Department of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada
| | - Mary M Reilly
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology and The National Hospital for Neurology and Neurosurgery, London, UK
| | - Shoji Tsuji
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan; Institute of Medical Genomics, International University of Health and Welfare, Chiba, Japan
| | - Henry Houlden
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology and The National Hospital for Neurology and Neurosurgery, London, UK
| | - Andrea Cortese
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology and The National Hospital for Neurology and Neurosurgery, London, UK; Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy.
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Lee S, Yoon JG, Hong J, Kim T, Kim N, Vandrovcova J, Yau WY, Cho J, Kim S, Kim MJ, Kim SY, Lee ST, Chu K, Lee SK, Kim HJ, Choi J, Moon J, Chae JH. Prevalence and Characterization of NOTCH2NLC GGC Repeat Expansions in Koreans: From a Hospital Cohort Analysis to a Population-Wide Study. Neurol Genet 2024; 10:e200147. [PMID: 38779172 PMCID: PMC11110025 DOI: 10.1212/nxg.0000000000200147] [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: 10/31/2023] [Accepted: 02/16/2024] [Indexed: 05/25/2024]
Abstract
Background and Objectives GGC repeat expansions in the NOTCH2NLC gene are associated with a broad spectrum of progressive neurologic disorders, notably, neuronal intranuclear inclusion disease (NIID). We aimed to investigate the population-wide prevalence and clinical manifestations of NOTCH2NLC-related disorders in Koreans. Methods We conducted a study using 2 different cohorts from the Korean population. Patients with available brain MRI scans from Seoul National University Hospital (SNUH) were thoroughly reviewed, and NIID-suspected patients presenting the zigzag edging signs underwent genetic evaluation for NOTCH2NLC repeats by Cas9-mediated nanopore sequencing. In addition, we analyzed whole-genome sequencing data from 3,887 individuals in the Korea Biobank cohort to estimate the distribution of the repeat counts in Koreans and to identify putative patients with expanded alleles and neurologic phenotypes. Results In the SNUH cohort, among 90 adult-onset leukoencephalopathy patients with unknown etiologies, we found 20 patients with zigzag edging signs. Except for 2 diagnosed with fragile X-associated tremor/ataxia syndrome and 2 with unavailable samples, all 16 patients (17.8%) were diagnosed with NIID (repeat range: 87-217). By analyzing the Korea Biobank cohort, we estimated the distribution of repeat counts and threshold (>64) for Koreans, identifying 6 potential patients with NIID. Furthermore, long-read sequencing enabled the elucidation of transmission and epigenetic patterns of NOTCH2NLC repeats within a family affected by pediatric-onset NIID. Discussion This study presents the population-wide distribution of NOTCH2NLC repeats and the estimated prevalence of NIID in Koreans, providing valuable insights into the association between repeat counts and disease manifestations in diverse neurologic disorders.
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Affiliation(s)
| | | | | | - Taekeun Kim
- From the Department of Genomic Medicine (S.L., J.G.Y., Jaeso Cho, S.K., M.J.K., S.Y.K., J.M., J.-H.C.), Seoul National University Hospital; Department of Pediatrics (S.L., Jaeso Cho, S.Y.K., J.-H.C.), Seoul National University College of Medicine, Seoul National University Children's Hospital; Department of Biomedical Sciences (J.H., T.K., Jungmin Choi), Korea University College of Medicine; Department of Neurology (N.K., S.-T.L., K.C., S.K.L., H.-J.K., J.M.), Seoul National University Hospital, Korea; Department of Neuromuscular Diseases (J.V.), Institute of Neurology, University College London, United Kingdom; Perron Institute for Neurological and Translational Science (W.Y.Y.), the University of Western Australia, Nedlands, Australia; and Department of Laboratory Medicine (M.J.K.), Seoul National University Hospital, Korea
| | - Narae Kim
- From the Department of Genomic Medicine (S.L., J.G.Y., Jaeso Cho, S.K., M.J.K., S.Y.K., J.M., J.-H.C.), Seoul National University Hospital; Department of Pediatrics (S.L., Jaeso Cho, S.Y.K., J.-H.C.), Seoul National University College of Medicine, Seoul National University Children's Hospital; Department of Biomedical Sciences (J.H., T.K., Jungmin Choi), Korea University College of Medicine; Department of Neurology (N.K., S.-T.L., K.C., S.K.L., H.-J.K., J.M.), Seoul National University Hospital, Korea; Department of Neuromuscular Diseases (J.V.), Institute of Neurology, University College London, United Kingdom; Perron Institute for Neurological and Translational Science (W.Y.Y.), the University of Western Australia, Nedlands, Australia; and Department of Laboratory Medicine (M.J.K.), Seoul National University Hospital, Korea
| | - Jana Vandrovcova
- From the Department of Genomic Medicine (S.L., J.G.Y., Jaeso Cho, S.K., M.J.K., S.Y.K., J.M., J.-H.C.), Seoul National University Hospital; Department of Pediatrics (S.L., Jaeso Cho, S.Y.K., J.-H.C.), Seoul National University College of Medicine, Seoul National University Children's Hospital; Department of Biomedical Sciences (J.H., T.K., Jungmin Choi), Korea University College of Medicine; Department of Neurology (N.K., S.-T.L., K.C., S.K.L., H.-J.K., J.M.), Seoul National University Hospital, Korea; Department of Neuromuscular Diseases (J.V.), Institute of Neurology, University College London, United Kingdom; Perron Institute for Neurological and Translational Science (W.Y.Y.), the University of Western Australia, Nedlands, Australia; and Department of Laboratory Medicine (M.J.K.), Seoul National University Hospital, Korea
| | - Wai Yan Yau
- From the Department of Genomic Medicine (S.L., J.G.Y., Jaeso Cho, S.K., M.J.K., S.Y.K., J.M., J.-H.C.), Seoul National University Hospital; Department of Pediatrics (S.L., Jaeso Cho, S.Y.K., J.-H.C.), Seoul National University College of Medicine, Seoul National University Children's Hospital; Department of Biomedical Sciences (J.H., T.K., Jungmin Choi), Korea University College of Medicine; Department of Neurology (N.K., S.-T.L., K.C., S.K.L., H.-J.K., J.M.), Seoul National University Hospital, Korea; Department of Neuromuscular Diseases (J.V.), Institute of Neurology, University College London, United Kingdom; Perron Institute for Neurological and Translational Science (W.Y.Y.), the University of Western Australia, Nedlands, Australia; and Department of Laboratory Medicine (M.J.K.), Seoul National University Hospital, Korea
| | - Jaeso Cho
- From the Department of Genomic Medicine (S.L., J.G.Y., Jaeso Cho, S.K., M.J.K., S.Y.K., J.M., J.-H.C.), Seoul National University Hospital; Department of Pediatrics (S.L., Jaeso Cho, S.Y.K., J.-H.C.), Seoul National University College of Medicine, Seoul National University Children's Hospital; Department of Biomedical Sciences (J.H., T.K., Jungmin Choi), Korea University College of Medicine; Department of Neurology (N.K., S.-T.L., K.C., S.K.L., H.-J.K., J.M.), Seoul National University Hospital, Korea; Department of Neuromuscular Diseases (J.V.), Institute of Neurology, University College London, United Kingdom; Perron Institute for Neurological and Translational Science (W.Y.Y.), the University of Western Australia, Nedlands, Australia; and Department of Laboratory Medicine (M.J.K.), Seoul National University Hospital, Korea
| | - Sheehyun Kim
- From the Department of Genomic Medicine (S.L., J.G.Y., Jaeso Cho, S.K., M.J.K., S.Y.K., J.M., J.-H.C.), Seoul National University Hospital; Department of Pediatrics (S.L., Jaeso Cho, S.Y.K., J.-H.C.), Seoul National University College of Medicine, Seoul National University Children's Hospital; Department of Biomedical Sciences (J.H., T.K., Jungmin Choi), Korea University College of Medicine; Department of Neurology (N.K., S.-T.L., K.C., S.K.L., H.-J.K., J.M.), Seoul National University Hospital, Korea; Department of Neuromuscular Diseases (J.V.), Institute of Neurology, University College London, United Kingdom; Perron Institute for Neurological and Translational Science (W.Y.Y.), the University of Western Australia, Nedlands, Australia; and Department of Laboratory Medicine (M.J.K.), Seoul National University Hospital, Korea
| | - Man Jin Kim
- From the Department of Genomic Medicine (S.L., J.G.Y., Jaeso Cho, S.K., M.J.K., S.Y.K., J.M., J.-H.C.), Seoul National University Hospital; Department of Pediatrics (S.L., Jaeso Cho, S.Y.K., J.-H.C.), Seoul National University College of Medicine, Seoul National University Children's Hospital; Department of Biomedical Sciences (J.H., T.K., Jungmin Choi), Korea University College of Medicine; Department of Neurology (N.K., S.-T.L., K.C., S.K.L., H.-J.K., J.M.), Seoul National University Hospital, Korea; Department of Neuromuscular Diseases (J.V.), Institute of Neurology, University College London, United Kingdom; Perron Institute for Neurological and Translational Science (W.Y.Y.), the University of Western Australia, Nedlands, Australia; and Department of Laboratory Medicine (M.J.K.), Seoul National University Hospital, Korea
| | - Soo Yeon Kim
- From the Department of Genomic Medicine (S.L., J.G.Y., Jaeso Cho, S.K., M.J.K., S.Y.K., J.M., J.-H.C.), Seoul National University Hospital; Department of Pediatrics (S.L., Jaeso Cho, S.Y.K., J.-H.C.), Seoul National University College of Medicine, Seoul National University Children's Hospital; Department of Biomedical Sciences (J.H., T.K., Jungmin Choi), Korea University College of Medicine; Department of Neurology (N.K., S.-T.L., K.C., S.K.L., H.-J.K., J.M.), Seoul National University Hospital, Korea; Department of Neuromuscular Diseases (J.V.), Institute of Neurology, University College London, United Kingdom; Perron Institute for Neurological and Translational Science (W.Y.Y.), the University of Western Australia, Nedlands, Australia; and Department of Laboratory Medicine (M.J.K.), Seoul National University Hospital, Korea
| | - Soon-Tae Lee
- From the Department of Genomic Medicine (S.L., J.G.Y., Jaeso Cho, S.K., M.J.K., S.Y.K., J.M., J.-H.C.), Seoul National University Hospital; Department of Pediatrics (S.L., Jaeso Cho, S.Y.K., J.-H.C.), Seoul National University College of Medicine, Seoul National University Children's Hospital; Department of Biomedical Sciences (J.H., T.K., Jungmin Choi), Korea University College of Medicine; Department of Neurology (N.K., S.-T.L., K.C., S.K.L., H.-J.K., J.M.), Seoul National University Hospital, Korea; Department of Neuromuscular Diseases (J.V.), Institute of Neurology, University College London, United Kingdom; Perron Institute for Neurological and Translational Science (W.Y.Y.), the University of Western Australia, Nedlands, Australia; and Department of Laboratory Medicine (M.J.K.), Seoul National University Hospital, Korea
| | - Kon Chu
- From the Department of Genomic Medicine (S.L., J.G.Y., Jaeso Cho, S.K., M.J.K., S.Y.K., J.M., J.-H.C.), Seoul National University Hospital; Department of Pediatrics (S.L., Jaeso Cho, S.Y.K., J.-H.C.), Seoul National University College of Medicine, Seoul National University Children's Hospital; Department of Biomedical Sciences (J.H., T.K., Jungmin Choi), Korea University College of Medicine; Department of Neurology (N.K., S.-T.L., K.C., S.K.L., H.-J.K., J.M.), Seoul National University Hospital, Korea; Department of Neuromuscular Diseases (J.V.), Institute of Neurology, University College London, United Kingdom; Perron Institute for Neurological and Translational Science (W.Y.Y.), the University of Western Australia, Nedlands, Australia; and Department of Laboratory Medicine (M.J.K.), Seoul National University Hospital, Korea
| | - Sang Kun Lee
- From the Department of Genomic Medicine (S.L., J.G.Y., Jaeso Cho, S.K., M.J.K., S.Y.K., J.M., J.-H.C.), Seoul National University Hospital; Department of Pediatrics (S.L., Jaeso Cho, S.Y.K., J.-H.C.), Seoul National University College of Medicine, Seoul National University Children's Hospital; Department of Biomedical Sciences (J.H., T.K., Jungmin Choi), Korea University College of Medicine; Department of Neurology (N.K., S.-T.L., K.C., S.K.L., H.-J.K., J.M.), Seoul National University Hospital, Korea; Department of Neuromuscular Diseases (J.V.), Institute of Neurology, University College London, United Kingdom; Perron Institute for Neurological and Translational Science (W.Y.Y.), the University of Western Australia, Nedlands, Australia; and Department of Laboratory Medicine (M.J.K.), Seoul National University Hospital, Korea
| | - Han-Joon Kim
- From the Department of Genomic Medicine (S.L., J.G.Y., Jaeso Cho, S.K., M.J.K., S.Y.K., J.M., J.-H.C.), Seoul National University Hospital; Department of Pediatrics (S.L., Jaeso Cho, S.Y.K., J.-H.C.), Seoul National University College of Medicine, Seoul National University Children's Hospital; Department of Biomedical Sciences (J.H., T.K., Jungmin Choi), Korea University College of Medicine; Department of Neurology (N.K., S.-T.L., K.C., S.K.L., H.-J.K., J.M.), Seoul National University Hospital, Korea; Department of Neuromuscular Diseases (J.V.), Institute of Neurology, University College London, United Kingdom; Perron Institute for Neurological and Translational Science (W.Y.Y.), the University of Western Australia, Nedlands, Australia; and Department of Laboratory Medicine (M.J.K.), Seoul National University Hospital, Korea
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Lu Y, Chen Y, Huang J, Jiang Z, Ge Y, Yao R, Zhang J, Geng S, Chen F, Jin Q, Chen G, Yang D. Advances of NOTCH2NLC Repeat Expansions and Associated Diseases: A Bibliometric and Meta-analysis. Mol Neurobiol 2024:10.1007/s12035-024-04193-6. [PMID: 38709391 DOI: 10.1007/s12035-024-04193-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/19/2024] [Indexed: 05/07/2024]
Abstract
The unclear pathogenic mechanisms of neurodegenerative disorders stemming from NOTCH2NLC GGC repeat expansions drive focused research. Thus, a bibliometric and meta-analysis was conducted to uncover research trends and positivity rates in NOTCH2NLC. We conducted systematic searches in the Web of Science, PubMed, Embase, and Scopus databases for studies related to NOTCH2NLC up until August 2, 2023. Information regarding countries, institutions, authors, journals, and keywords of studies included in the Web of Science was analyzed and visualized. The positivity rates of NOTCH2NLC GGC repeat expansions across all screened patients and patients' families were pooled under the random-effects model. Publication bias and its impact were examined using funnel plots, Egger's linear regression, and trim-and-fill method. The bibliometric analysis, revealing pronounced publication growth, comprised 119 studies, which came from China and Japan particularly. "Neuronal intranuclear inclusion disease" emerged as a frequently used keyword. The meta-analysis comprised 36 studies, indicating global positivity rates of 1.79% (95% CI, 0.75-3.17) for all patients and 2.00% (95% CI, 0.26-4.78) for patients' families. Subgroup analyses based on region and phenotype suggested the highest NOTCH2NLC positivity rates in Taiwan population (5.42%, 95% CI 0.08-16.89) and in leukoencephalopathy-dominant patients (8.25%, 95% CI, 3.01-15.60). Sensitivity analysis affirmed the robustness of results. In conclusion, NOTCH2NLC GGC repeat expansions exhibit rare globally, primarily in East Asia, and leukoencephalopathy-dominant patients, emphasizing regional and phenotypic distinctions. Emerging focal points in NOTCH2NLC researches underscore the need for collaborative exploration.
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Affiliation(s)
- Yangguang Lu
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Yiqun Chen
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Jiaqi Huang
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Zihan Jiang
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Yaoying Ge
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Ruotong Yao
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Jinxiu Zhang
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Shangze Geng
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Feng Chen
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Qiaoqiao Jin
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Guangyong Chen
- Department of Neurology, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China.
| | - Dehao Yang
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China.
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Zhang J, Ling L, Xiang L, Li W, Bao P, Yue W. Clinical features of neuronal intranuclear inclusion disease with seizures: a systematic literature review. Front Neurol 2024; 15:1387399. [PMID: 38707999 PMCID: PMC11069311 DOI: 10.3389/fneur.2024.1387399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Accepted: 04/08/2024] [Indexed: 05/07/2024] Open
Abstract
Background Infant, junior, and adult patients with neuronal intranuclear inclusion disease (NIID) present with various types of seizures. We aimed to conduct a systematic literature review on the clinical characteristics of NIID with seizures to provide novel insight for early diagnosis and treatment and to improve prognosis of these patients. Methods We used keywords to screen articles related to NIID and seizures, and data concerning the clinical characteristics of patients, including demographic features, disease characteristics of the seizures, treatment responses, imaging examinations, and other auxiliary examination results were extracted. Results The included studies comprised 21 patients with NIID with seizures. The most common clinical phenotypes were cognitive impairment (76.20%) and impaired consciousness (57.14%), and generalized onset motor seizures (46.15%) represented the most common type. Compared with infantile and juvenile cases, the use of antiepileptic drugs in adults led to significant seizure control and symptom improvement, in addition to providing a better prognosis. The number of GGC sequence repeats in the NOTCH2NLC gene in six NIID patients with seizures who underwent genetic testing ranged 72-134. Conclusion The most common clinical phenotypes in patients with NIID with seizures were cognitive impairment and consciousness disorders. Patients with NIID presented with various types of seizures, with the most common being generalized onset motor seizures. Adult patients had a better prognosis and were relatively stable. The early diagnosis of NIID with seizures is of great significance for treatment and to improve prognosis.
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Affiliation(s)
- Jinwei Zhang
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China
| | - Ling Ling
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
| | - Lei Xiang
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
| | - Wenxia Li
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China
| | - Pengnan Bao
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China
| | - Wei Yue
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
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Gu X, Yu J, Jiao K, Deng J, Xia X, Qiao K, Yue D, Gao M, Zhao C, Dong J, Huang G, Shan J, Yan C, Di L, Da Y, Zhu W, Xi J, Wang Z. Non-coding CGG repeat expansion in LOC642361/NUTM2B-AS1 is associated with a phenotype of oculopharyngodistal myopathy. J Med Genet 2024; 61:340-346. [PMID: 37923380 DOI: 10.1136/jmg-2023-109345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 10/18/2023] [Indexed: 11/07/2023]
Abstract
BACKGROUND Oculopharyngodistal myopathy (OPDM) is a rare adult-onset neuromuscular disease, associated with CGG repeat expansions in the 5' untranslated region of LRP12, GIPC1, NOTCH2NLC and RILPL1. However, the genetic cause of a proportion of pathoclinically confirmed cases remains unknown. METHODS A total of 26 OPDM patients with unknown genetic cause(s) from 4 tertiary referral hospitals were included in this study. Clinical data and laboratory findings were collected. Muscle samples were observed by histological and immunofluorescent staining. Long-read sequencing was initially conducted in six patients with OPDM. Repeat-primed PCR was used to screen the CGG repeat expansions in LOC642361/NUTM2B-AS1 in all 26 patients. RESULTS We identified CGG repeat expansion in the non-coding transcripts of LOC642361/NUTM2B-AS1 in another two unrelated Chinese cases with typical pathoclinical features of OPDM. The repeat expansion was more than 70 times in the patients but less than 40 times in the normal controls. Both patients showed no leucoencephalopathy but one showed mild cognitive impairment detected by Montreal Cognitive Assessment. Rimmed vacuoles and p62-positive intranuclear inclusions (INIs) were identified in muscle pathology, and colocalisation of CGG RNA foci with p62 was also found in the INIs of patient-derived fibroblasts. CONCLUSIONS We identified another two unrelated cases with CGG repeat expansion in the long non-coding RNA of the LOC642361/NUTM2B-AS1 gene, presenting with a phenotype of OPDM. Our cases broadened the recognised phenotypic spectrum and pathogenesis in the disease associated with CGG repeat expansion in LOC642361/NUTM2B-AS1.
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Affiliation(s)
- Xinyu Gu
- Department of Neurology, Huashan Rare Disease Center, National Center for Neurological Disorders, Huashan Hospital, Fudan University, Shanghai, China
| | - Jiaxi Yu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Kexin Jiao
- Department of Neurology, Huashan Rare Disease Center, National Center for Neurological Disorders, Huashan Hospital, Fudan University, Shanghai, China
| | - Jianwen Deng
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Xingyu Xia
- Department of Neurology, Huashan Rare Disease Center, National Center for Neurological Disorders, Huashan Hospital, Fudan University, Shanghai, China
| | - Kai Qiao
- Department of Neurology, Huashan Rare Disease Center, National Center for Neurological Disorders, Huashan Hospital, Fudan University, Shanghai, China
| | - Dongyue Yue
- Department of Neurology, Jing'an District Center Hospital of Shanghai, Shanghai, China
| | - Mingshi Gao
- Department of Pathology, Huashan Hospital, Fudan University, Shanghai, China
| | - Chongbo Zhao
- Department of Neurology, Huashan Rare Disease Center, National Center for Neurological Disorders, Huashan Hospital, Fudan University, Shanghai, China
| | - Jihong Dong
- Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Gongchun Huang
- Department of Neurology, the First People's Hospital of Pinghu, Pinghu, Zhejiang, China
| | - Jingli Shan
- Department of Neurology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Chuanzhu Yan
- Department of Neurology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Li Di
- Department of Neurology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Yuwei Da
- Department of Neurology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Wenhua Zhu
- Department of Neurology, Huashan Rare Disease Center, National Center for Neurological Disorders, Huashan Hospital, Fudan University, Shanghai, China
| | - Jianying Xi
- Department of Neurology, Huashan Rare Disease Center, National Center for Neurological Disorders, Huashan Hospital, Fudan University, Shanghai, China
| | - Zhaoxia Wang
- Department of Neurology, Peking University First Hospital, Beijing, China
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Zeng T, Chen Y, Huang H, Li S, Huang J, Xie H, Lin S, Chen S, Chen G, Yang D. Neuronal Intranuclear Inclusion Disease with NOTCH2NLC GGC Repeat Expansion: A Systematic Review and Challenges of Phenotypic Characterization. Aging Dis 2024:AD.2024.0131-1. [PMID: 38377026 DOI: 10.14336/ad.2024.0131-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/31/2024] [Indexed: 02/22/2024] Open
Abstract
Neuronal intranuclear inclusion disease (NIID) is a highly clinically heterogeneous neurodegenerative disorder primarily attributed to abnormal GGC repeat expansions in the NOTCH2NLC gene. This study aims to comprehensively explore its phenotypic characteristics and genotype-phenotype correlation. A literature search was conducted in PubMed, Embase, and the Cochrane Library from September 1, 2019, to December 31, 2022, encompassing reported NIID cases confirmed by pathogenic NOTCH2NLC mutations. Linear regressions and trend analyses were performed. Analyzing 635 cases from 85 included studies revealed that familial cases exhibited significantly larger GGC repeat expansions than sporadic cases (p < 0.001), and this frequency significantly increased with expanding GGC repeats (p trend < 0.001). Age at onset (AAO) showed a negative correlation with GGC repeat expansions (p < 0.001). The predominant initial symptoms included tremor (31.70%), cognitive impairment (14.12%), and muscle weakness (10.66%). The decreased or absent tendon reflex (DTR/ATR) emerged as a notable clinical indicator of NIID due to its high prevalence. U-fiber was observed in 79.11% of patients, particularly prominent in paroxysmal disease-dominant (87.50%) and dementia-dominant cases (81.08%). Peripheral neuropathy-dominant cases exhibited larger GGC repeat expansions (median = 123.00) and an earlier AAO (median = 33.00) than other phenotypes. Moreover, a significant genetic anticipation of 3.5 years was observed (p = 0.039). This study provides a comprehensive and up-to-date compilation of genotypic and phenotypic information on NIID since the identification of the causative gene NOTCH2NLC. We contribute a novel diagnostic framework for NIID to support clinical practice.
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Affiliation(s)
- Tian Zeng
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, China
| | - Yiqun Chen
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, China
| | - Honghao Huang
- Department of Cardiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shengqi Li
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, China
| | - Jiaqi Huang
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, China
| | - Haobo Xie
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, China
| | - Shenyi Lin
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, China
| | - Siyao Chen
- The First School of Medicine, School of Information and Engineering, Wenzhou Medical University, Wenzhou, China
| | - Guangyong Chen
- Department of Neurology, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Dehao Yang
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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10
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Ren X, Tan D, Deng J, Wang Z, Hong D. Skin biopsy and neuronal intranuclear inclusion disease. J Dermatol 2023; 50:1367-1372. [PMID: 37718652 DOI: 10.1111/1346-8138.16966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 08/04/2023] [Accepted: 08/31/2023] [Indexed: 09/19/2023]
Abstract
Neuronal intranuclear inclusion disease (NIID) is a rare neurodegenerative disease with variable clinical phenotypes. There is a considerable delay in the definite diagnosis, which primarily depends on postmortem brain pathological examination. Although CGG repeat expansion in the 5'-untranslated region of NOTCH2NLC has been identified as a disease-associated variant, the pathological diagnosis is still required in certain NIID cases. Intranuclear inclusions found in the skin tissue of patients with NIID dramatically increased its early detection rate. Skin biopsy, as a minimally invasive method, has become widely accepted as a routine examination to confirm the pathogenicity of the repeat expansion in patients with suspected NIID. In addition, the shared developmental origin of the skin and nerve system provided a new insight into the pathological changes observed in patients with NIID. In this review, we systematically discuss the role of skin biopsy for NIID diagnosis, the procedure of skin biopsy, and the pathophysiological mechanism of intranuclear inclusion in the skin.
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Affiliation(s)
- Xiao Ren
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Multidisciplinary collaborative group for cutaneous neuropathology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Dandan Tan
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Multidisciplinary collaborative group for cutaneous neuropathology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jianwen Deng
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Zhaoxia Wang
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Daojun Hong
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Multidisciplinary collaborative group for cutaneous neuropathology, The First Affiliated Hospital of Nanchang University, Nanchang, China
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11
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Liu M, Gao Y, Yuan Y, Liu X, Wang Y, Li L, Zhang X, Jiang C, Wang Q, Wang Y, Shi C, Xu Y, Yang J. A comprehensive study of clinicopathological and genetic features of neuronal intranuclear inclusion disease. Neurol Sci 2023; 44:3545-3556. [PMID: 37184590 DOI: 10.1007/s10072-023-06845-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 05/07/2023] [Indexed: 05/16/2023]
Abstract
BACKGROUND The discovery of skin intranuclear inclusions and GGC repeat expansion of NOTCH2NLC has greatly promoted the diagnosis of neuronal intranuclear inclusion disease (NIID). With highly heterogeneous clinical manifestations, NIID patients tend to be underdiagnosed at early stages. METHODS This study comprehensively studied clinical manifestations, magnetic resonance imaging (MRI), and peripheral nerve conduction in 24 NIID and 166 other neurodegenerative disease (ND) subjects. The nomogram was plotted using the "rms" package, and the t-distributed stochastic neighbor embedding algorithm was performed. Associations between skin intranuclear inclusions and NOTCH2NLC GGC repeats were further analyzed. RESULTS The clinical, MRI, and peripheral nerve conduction features seriously overlapped in NIID and ND patients; they were assigned variables according to their frequency and specificity in NIID patients. A nomogram that could distinguish NIID from ND was constructed according to the assigned variables and cutoff values of the above features. The occurrence of skin intranuclear inclusions and NOTCH2NLC GGC repeats ≥ 60 showed 100% consistency, and intranuclear inclusion frequency positively correlated with NOTCH2NLC GGC repeats. A hierarchical diagnostic flowchart for definite NIID was further established. CONCLUSION We provide a novel nomogram with the potential to realize early identification and update the diagnostic flowchart for definitive diagnosis. Moreover, this is the first study to define the association between skin pathology and NOTCH2NLC genetics in NIID.
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Affiliation(s)
- Minglei Liu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China
| | - Yuan Gao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China
- NHC Key Laboratory of Prevention and Treatment of Cerebrovascular Disease, Zhengzhou, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou University, Zhengzhou, Henan, China
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
| | - Yanpeng Yuan
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China
- NHC Key Laboratory of Prevention and Treatment of Cerebrovascular Disease, Zhengzhou, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou University, Zhengzhou, Henan, China
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaojing Liu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China
- NHC Key Laboratory of Prevention and Treatment of Cerebrovascular Disease, Zhengzhou, Henan, China
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
| | - Yangyang Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China
- NHC Key Laboratory of Prevention and Treatment of Cerebrovascular Disease, Zhengzhou, Henan, China
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
| | - Lanjun Li
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China
- NHC Key Laboratory of Prevention and Treatment of Cerebrovascular Disease, Zhengzhou, Henan, China
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
| | - Xiaoyun Zhang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China
| | - Chenyang Jiang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou University, Zhengzhou, Henan, China
| | - Qingzhi Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China
| | - Yanlin Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China
- NHC Key Laboratory of Prevention and Treatment of Cerebrovascular Disease, Zhengzhou, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou University, Zhengzhou, Henan, China
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China
| | - Changhe Shi
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China.
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China.
| | - Yuming Xu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China.
- NHC Key Laboratory of Prevention and Treatment of Cerebrovascular Disease, Zhengzhou, Henan, China.
- Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou University, Zhengzhou, Henan, China.
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan, China.
| | - Jing Yang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1 Eastern Jianshe Road, Zhengzhou, 450052, Henan, China.
- NHC Key Laboratory of Prevention and Treatment of Cerebrovascular Disease, Zhengzhou, Henan, China.
- Henan Key Laboratory of Cerebrovascular Diseases, Zhengzhou University, Zhengzhou, Henan, China.
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Yan Y, Cao L, Gu L, Xu C, Fang W, Tian J, Yin X, Zhang B, Zhao G. The clinical characteristics of neuronal intranuclear inclusion disease and its relation with inflammation. Neurol Sci 2023; 44:3189-3197. [PMID: 37099235 DOI: 10.1007/s10072-023-06822-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 04/19/2023] [Indexed: 04/27/2023]
Abstract
BACKGROUND Neuronal intranuclear inclusion disease (NIID) is a great imitator with a broad spectrum of clinical manifestations that include dementia, parkinsonism, paroxysmal symptoms, peripheral neuropathy, and autonomic dysfunction. Hence, it may also masquerade as other diseases such as Alzheimer's disease, Parkinson's disease, and Charcot-Marie-Tooth disease. Recent breakthroughs on neuroimaging, skin biopsy, and genetic testing have facilitated the diagnosis. However, early identification and effective treatment are still difficult in cases of NIID. OBJECTIVE To further study the clinical characteristics of NIID and investigate the relationship between NIID and inflammation. METHODS We systematically evaluated the clinical symptoms, signs, MRI and electromyographical findings, and pathological characteristics of 20 NIID patients with abnormal GGC repeats in the NOTCH2NLC gene. Some inflammatory factors in the patients were also studied. RESULTS Paroxysmal symptoms such as paroxysmal encephalopathy, stroke-like episodes, and mitochondrial encephalomyopathy lactic acidosis and stroke (MELAS)-like episode were the most common phenotypes. Other symptoms such as cognitive dysfunction, neurogenic bladder, tremor, and vision disorders were also suggestive of NIID. Interestingly, not all patients showed apparent diffusion-weighted imaging (DWI) abnormality or intranuclear inclusions, while abnormal GGC repeats of NOTCH2NLC were seen in all patients. And fevers were noticed in some patients during encephalitic episodes, usually with increasing leukocyte counts and neutrophil ratios. Both IL-6 (p = 0.019) and TNF-α (p = 0.027) levels were significantly higher in the NIID group than in normal controls. CONCLUSION Genetic testing of NOTCH2NLC may be the best choice in the diagnosis of NIID. Inflammation might be involved in the pathogenesis of NIID.
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Affiliation(s)
- Yaping Yan
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Lanxiao Cao
- Department of Neurology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, Zhejiang Province, China
| | - Luyan Gu
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Congying Xu
- Department of Neurology, The Second People's Hospital of Jiaxing, Jiaxing, 314099, Zhejiang Province, China
| | - Wei Fang
- Department of Neurology, Hangzhou Traditional Chinese Medicine Hospital, Hangzhou, 310007, Zhejiang Province, China
| | - Jun Tian
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Xinzhen Yin
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China
| | - Baorong Zhang
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China.
| | - Guohua Zhao
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China.
- Department of Neurology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, Zhejiang Province, China.
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Fitrah YA, Higuchi Y, Hara N, Tokutake T, Kanazawa M, Sanpei K, Taneda T, Nakajima A, Koide S, Tsuboguchi S, Watanabe M, Fukumoto J, Ando S, Sato T, Iwafuchi Y, Sato A, Hayashi H, Ishiguro T, Takeda H, Takahashi T, Fukuhara N, Kasuga K, Miyashita A, Onodera O, Ikeuchi T. Heterogenous Genetic, Clinical, and Imaging Features in Patients with Neuronal Intranuclear Inclusion Disease Carrying NOTCH2NLC Repeat Expansion. Brain Sci 2023; 13:955. [PMID: 37371433 DOI: 10.3390/brainsci13060955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
Neuronal intranuclear inclusion disease (NIID) is a neurodegenerative disorder that is caused by the abnormal expansion of non-coding trinucleotide GGC repeats in NOTCH2NLC. NIID is clinically characterized by a broad spectrum of clinical presentations. To date, the relationship between expanded repeat lengths and clinical phenotype in patients with NIID remains unclear. Thus, we aimed to clarify the genetic and clinical spectrum and their association in patients with NIID. For this purpose, we genetically analyzed Japanese patients with adult-onset NIID with characteristic clinical and neuroimaging findings. Trinucleotide repeat expansions of NOTCH2NLC were examined by repeat-primed and amplicon-length PCR. In addition, long-read sequencing was performed to determine repeat size and sequence. The expanded GGC repeats ranging from 94 to 361 in NOTCH2NLC were found in all 15 patients. Two patients carried biallelic repeat expansions. There were marked heterogenous clinical and imaging features in NIID patients. Patients presenting with cerebellar ataxia or urinary dysfunction had a significantly larger GGC repeat size than those without. This significant association disappeared when these parameters were compared with the total trinucleotide repeat number. ARWMC score was significantly higher in patients who had a non-glycine-type trinucleotide interruption within expanded poly-glycine motifs than in those with a pure poly-glycine expansion. These results suggested that the repeat length and sequence in NOTCH2NLC may partly modify some clinical and imaging features of NIID.
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Affiliation(s)
- Yusran Ady Fitrah
- Department of Molecular Genetics, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Yo Higuchi
- Department of Molecular Genetics, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
- Department of Neurology, Joetsu General Hospital, Joetsu 943-0172, Japan
| | - Norikazu Hara
- Department of Molecular Genetics, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Takayoshi Tokutake
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Masato Kanazawa
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Kazuhiro Sanpei
- Department of Neurology, Sado General Hospital, Sado 952-1209, Japan
| | - Tomone Taneda
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Akihiko Nakajima
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Shin Koide
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Shintaro Tsuboguchi
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Midori Watanabe
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Junki Fukumoto
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Shoichiro Ando
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Tomoe Sato
- Department of Neurology, Tsubame Rosai Hospital, Tsubame 959-1228, Japan
| | - Yohei Iwafuchi
- Department of Neurology, Niigata City General Hospital, Niigata 950-1197, Japan
| | - Aki Sato
- Department of Neurology, Niigata City General Hospital, Niigata 950-1197, Japan
| | - Hideki Hayashi
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
- Department of Neurology, Sado General Hospital, Sado 952-1209, Japan
| | - Takanobu Ishiguro
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
- Department of Neurology, Sado General Hospital, Sado 952-1209, Japan
| | - Hayato Takeda
- Department of Neurology, Tsukuba University, Tsukuba 950-1197, Japan
| | | | - Nobuyoshi Fukuhara
- Department of Neurology, Joetsu General Hospital, Joetsu 943-0172, Japan
| | - Kensaku Kasuga
- Department of Molecular Genetics, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Akinori Miyashita
- Department of Molecular Genetics, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Osamu Onodera
- Department of Neurology, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | - Takeshi Ikeuchi
- Department of Molecular Genetics, Brain Research Institute, Niigata University, Niigata 951-8585, Japan
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Current advances in neuronal intranuclear inclusion disease. Neurol Sci 2023; 44:1881-1889. [PMID: 36795299 DOI: 10.1007/s10072-023-06677-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 02/10/2023] [Indexed: 02/17/2023]
Abstract
Neuronal intranuclear inclusion disease (NIID) is a rare but probably underdiagnosed neurodegenerative disorder due to pathogenic GGC expansions in the NOTCH2NLC gene. In this review, we summarize recent developments in the inheritance features, pathogenesis, and histopathologic and radiologic features of NIID that subvert the previous perceptions of NIID. GGC repeat sizes determine the age of onset and clinical phenotypes of NIID patients. Anticipation may be absent in NIID but paternal bias is observed in NIID pedigrees. Eosinophilic intranuclear inclusions in skin tissues once considered pathological hallmarks of NIID can also present in other GGC repeat diseases. Diffusion-weighted imaging (DWI) hyperintensity along the corticomedullary junction once considered the imaging hallmark of NIID can frequently be absent in muscle weakness and parkinsonism phenotype of NIID. Besides, DWI abnormalities can appear years after the onset of predominant symptoms and may even disappear completely with disease progression. Moreover, continuous reports of NOTCH2NLC GGC expansions in patients with other neurodegenerative diseases lead to the proposal of a new concept of NOTCH2NLC-related GGC repeat expansion disorders (NRED). However, by reviewing the previous literature, we point out the limitations of these studies and provide evidence that these patients are actually suffering from neurodegenerative phenotypes of NIID.
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Hong D, Wang H, Zhu M, Peng Y, Huang P, Zheng Y, Yu M, Meng L, Li F, Yu J, Zhou M, Deng J, Wang Z, Yuan Y. Subclinical peripheral neuropathy is common in neuronal intranuclear inclusion disease with dominant encephalopathy. Eur J Neurol 2023; 30:527-537. [PMID: 36263606 DOI: 10.1111/ene.15606] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 10/05/2022] [Accepted: 10/13/2022] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND PURPOSE Neuronal intranuclear inclusion disease (NIID) is associated with CGG repeat expansion in the NOTCH2NLC gene. Although pure or dominant peripheral neuropathy has been described as a subtype of NIID in a few patients, most NIID patients predominantly show involvements of the central nervous system (CNS). It is necessary to further explore whether these patients have subclinical peripheral neuropathy. METHODS Twenty-eight NIID patients, clinically characterized by CNS-dominant involvements, were recruited from two tertiary hospitals. Standard nerve conduction studies were performed in all patients. Skin and sural nerve biopsies were performed in 28 and 15 patients, respectively. Repeat-primed polymerase chain reaction and amplicon length polymerase chain reaction were used to screen the CGG repeat expansion in NOTCH2NLC. RESULTS All 28 patients can be diagnosed with NIID based on skin pathological and genetic changes. All patients predominantly showed CNS symptoms mainly characterized by episodic encephalopathy and cognitive impairments, but no clinical symptoms of peripheral neuropathy could be observed initially. Electrophysiological abnormalities were found in 96.4% (27/28) of these patients, indicating that subclinical peripheral neuropathy is common in NIID patients with CNS-dominant type. Electrophysiological and neuropathological studies revealed that demyelinating degeneration was the main pathological pattern in these patients, although mild axonal degeneration was also observed in some patients. No significant association between CGG repeat size and the change of nerve conduction velocity was found in these patients. CONCLUSIONS This study demonstrated that most patients with CNS-dominant NIID had subclinical peripheral neuropathy. Electrophysiological examination should be the routinely diagnostic workflow for every NIID patient.
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Affiliation(s)
- Daojun Hong
- Department of Neurology, First Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Medical Genetics, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hui Wang
- Department of Neurology, Peking University First Hospital, Beijing, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Min Zhu
- Department of Neurology, First Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Medical Genetics, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yun Peng
- Department of Neurology, First Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Medical Genetics, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Pengcheng Huang
- Department of Neurology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yilei Zheng
- Department of Neurology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Meng Yu
- Department of Neurology, Peking University First Hospital, Beijing, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Lingchao Meng
- Department of Neurology, Peking University First Hospital, Beijing, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Fan Li
- Department of Neurology, Peking University First Hospital, Beijing, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Jiaxi Yu
- Department of Neurology, Peking University First Hospital, Beijing, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Meihong Zhou
- Department of Neurology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jianwen Deng
- Department of Neurology, Peking University First Hospital, Beijing, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Zhaoxia Wang
- Department of Neurology, Peking University First Hospital, Beijing, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Yun Yuan
- Department of Neurology, Peking University First Hospital, Beijing, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
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Zhao B, Yang M, Wang Z, Yang Q, Zhang Y, Qi X, Pan S, Yu Y. Clinical characteristics of two patients with neuronal intranuclear inclusion disease and literature review. Front Neurosci 2022; 16:1056261. [PMID: 36545534 PMCID: PMC9762495 DOI: 10.3389/fnins.2022.1056261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/11/2022] [Indexed: 12/12/2022] Open
Abstract
Background Neuronal intranuclear inclusion disease (NIID) is a rare chronic progressive neurodegenerative disease, with complex and diverse clinical manifestations and pathological eosinophilic hyaline intranuclear inclusions in the central and peripheral nervous systems and visceral organs. Improvements in diagnostic methods such as skin biopsy and gene testing are helpful in revealing the clinical and genetic characters of NIID. Materials and methods We presented two cases of NIID diagnosed by using NOTCH2NLC gene testing and skin biopsy. Diffusion weighted imaging (DWI) showed high linear intensity in corticomedullary junction. We also reviewed all the published NIID cases with positive NOTCH2NLC GGC repeat expansion and skin biopsy results in PubMed. Results Patient 1 was a 63-year-old male who carried 148 GGC repeats and presented with progressive tremor and limb weakness. Patient 2 was a 62-year-old woman who carried 131 GGC repeats and presented with tremors, memory loss and headaches. The most common clinical manifestation of 63 NIID patients in this study was cognitive impairment, followed by tremors. In our study, almost all the patients were from East Asia, the male to female ratio was 1:1.26, with an age of onset of 54.12 ± 14.12 years, and an age of diagnosis of 60.03 ± 12.21 years. Symmetrical high signal intensity at the corticomedullary junction on DWI were revealed in 80.96% of the patients. For the GGC repeat numbers, the majority of GGC repeats were in the 80-119 intervals, with few GGC repeats above 160. The number of GGC repetitions was significantly higher in patients presented with muscle weakness than in other clinical manifestations. Conclusion NIID is a neurodegenerative disease caused by aberrant polyglycine (polyG) protein aggregation. NIID mostly occurs in the elderly population in East Asia, with cognitive dysfunction as the most common symptom. Staging NIID based on clinical presentation is inappropriate because most patients with NIID have overlapping symptoms. In our study, there was no significant correlation between the number of GGC repeats and different phenotypes except for muscle weakness. Abnormal trinucleotides repeat and PolyG protein aggregation maybe common pathogenic mechanism in neurodegenerative diseases and cerebrovascular diseases, which needs to be confirmed by more studies.
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Affiliation(s)
- Bo Zhao
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Miao Yang
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Zhiwei Wang
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Qiqiong Yang
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Yimo Zhang
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Xiaokun Qi
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Shuyi Pan
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Yingxin Yu
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China,*Correspondence: Yingxin Yu,
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CGG repeat expansion in NOTCH2NLC causes mitochondrial dysfunction and progressive neurodegeneration in Drosophila model. Proc Natl Acad Sci U S A 2022; 119:e2208649119. [PMID: 36191230 PMCID: PMC9565157 DOI: 10.1073/pnas.2208649119] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Neuronal intranuclear inclusion disease (NIID) is a neuromuscular/neurodegenerative disease caused by the expansion of CGG repeats in the 5' untranslated region (UTR) of the NOTCH2NLC gene. These repeats can be translated into a polyglycine-containing protein, uN2CpolyG, which forms protein inclusions and is toxic in cell models, albeit through an unknown mechanism. Here, we established a transgenic Drosophila model expressing uN2CpolyG in multiple systems, which resulted in progressive neuronal cell loss, locomotor deficiency, and shortened lifespan. Interestingly, electron microscopy revealed mitochondrial swelling both in transgenic flies and in muscle biopsies of individuals with NIID. Immunofluorescence and immunoelectron microscopy showed colocalization of uN2CpolyG with mitochondria in cell and patient samples, while biochemical analysis revealed that uN2CpolyG interacted with a mitochondrial RNA binding protein, LRPPRC (leucine-rich pentatricopeptide repeat motif-containing protein). Furthermore, RNA sequencing (RNA-seq) analysis and functional assays showed down-regulated mitochondrial oxidative phosphorylation in uN2CpolyG-expressing flies and NIID muscle biopsies. Finally, idebenone treatment restored mitochondrial function and alleviated neurodegenerative phenotypes in transgenic flies. Overall, these results indicate that transgenic flies expressing uN2CpolyG recapitulate key features of NIID and that reversing mitochondrial dysfunction might provide a potential therapeutic approach for this disorder.
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Abstract
PURPOSE OF REVIEW Oculopharyngodistal myopathy (OPDM) is a rare adolescent or adult-onset neuromuscular disease that is characterized by progressive ocular, facial, pharyngeal and distal limb muscle weakness. The rimmed vacuoles and intranuclear inclusions in myofibers constitute the pathological hallmark of OPDM. In this review, the latest findings related to the genetic, molecular and clinical features of OPDM, as well as the diagnosis and management are summarized. RECENT FINDINGS Four gene mutations, CGG repeats in the 5'-untranslated region of LRP12 , GIPC1 , NOTCH2NLC and RILPL1 have been reported to be disease-causing genes in OPDM, namely OPDM1, OPDM2, OPDM3 and OPDM4, accordingly. So far, limited studies have suggested that CGG repeat expansion within the pathogenic range may play a key role in the pathogenesis of OPDM with the gain-of-function mechanism at the RNA and/or protein level, while repeat expansion over a threshold limit may cause hypermethylation, leading to the transcriptional silencing of the CGG repeats in the expanded allele, which results in the existence of mild phenotype or asymptomatic carriers. SUMMARY Novel gene mutations, possible molecular mechanisms and the clinical features related to different causative genes are discussed in this review. More studies on the exact pathogenic mechanism are needed.
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Affiliation(s)
- Jiaxi Yu
- Department of Neurology, Peking University First Hospital
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Jianwen Deng
- Department of Neurology, Peking University First Hospital
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Zhaoxia Wang
- Department of Neurology, Peking University First Hospital
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
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Liu Y, Li H, Liu X, Wang B, Yang H, Wan B, Sun M, Xu X. Clinical and mechanism advances of neuronal intranuclear inclusion disease. Front Aging Neurosci 2022; 14:934725. [PMID: 36177481 PMCID: PMC9513122 DOI: 10.3389/fnagi.2022.934725] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
Due to the high clinical heterogeneity of neuronal intranuclear inclusion disease (NIID), it is easy to misdiagnose this condition and is considered to be a rare progressive neurodegenerative disease. More evidence demonstrates that NIID involves not only the central nervous system but also multiple systems of the body and shows a variety of symptoms, which makes a clinical diagnosis of NIID more difficult. This review summarizes the clinical symptoms in different systems and demonstrates that NIID is a multiple-system intranuclear inclusion disease. In addition, the core triad symptoms in the central nervous system, such as dementia, parkinsonism, and psychiatric symptoms, are proposed as an important clue for the clinical diagnosis of NIID. Recent studies have demonstrated that expanded GGC repeats in the 5′-untranslated region of the NOTCH2NLC gene are the cause of NIID. The genetic advances and possible underlying mechanisms of NIID (expanded GGC repeat-induced DNA damage, RNA toxicity, and polyglycine-NOTCH2NLC protein toxicity) are briefly summarized in this review. Interestingly, inflammatory cell infiltration and inflammation were observed in the affected tissues of patients with NIID. As a downstream pathological process of NIID, inflammation could be a therapeutic target for NIID.
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Affiliation(s)
- Yueqi Liu
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Neuroscience, Soochow University, Suzhou, China
| | - Hao Li
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Neuroscience, Soochow University, Suzhou, China
| | - Xuan Liu
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Bin Wang
- Institute of Neuroscience, Soochow University, Suzhou, China
- Institute for Fetology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Hao Yang
- Institute for Fetology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Bo Wan
- Institute of Neuroscience, Soochow University, Suzhou, China
- Bo Wan,
| | - Miao Sun
- Institute for Fetology, The First Affiliated Hospital of Soochow University, Suzhou, China
- Miao Sun,
| | - Xingshun Xu
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China
- Institute of Neuroscience, Soochow University, Suzhou, China
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Soochow University, Suzhou, Jiangsu, China
- *Correspondence: Xingshun Xu,
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Zhou Y, Huang P, Huang Z, Peng Y, Zheng Y, Yu Y, Zhu M, Deng J, Wang Z, Hong D. Urine cytological study in patients with clinicopathologically confirmed neuronal intranuclear inclusion disease. Front Aging Neurosci 2022; 14:977604. [PMID: 36172483 PMCID: PMC9510843 DOI: 10.3389/fnagi.2022.977604] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 08/25/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveThe diagnosis of neuronal intranuclear inclusion disease (NIID) is currently based on CGG repeat expansion in the 5′UTR of the NOTCH2NLC gene, or p62-positive intranuclear inclusions in skin biopsy. The purpose of this study is to explore the value of non-invasive pathological findings in urine sediment cells from NIID patients.Materials and methodsTen patients with clinically suspected NIID were enrolled for skin biopsy and gene screening. Morning urine (500 ml) was collected from each patient, and cell sediment was obtained by centrifugation. Urine cytology, including Giemsa staining, p62 immunostaining, and electron microscopic examination, were conducted on cell sediment.ResultsThe main clinical symptoms of 10 patients included episodic disturbance of consciousness, cognitive impairment, tremor, limb weakness, and so on. Cerebral MRI showed that 9 patients had linear DWI high signal in the corticomedullary junction. Genetic testing found that the number of CGG repeat ranged from 96 to 158 in the NOTCH2NLC gene. Skin biopsy revealed that all patients showed p62-positive intranuclear inclusions in 18.5 ± 6.3% of the duct epithelial cells of sweat gland. In contrast, urine sediment smears revealed that only 3 patients had p62 positive intranuclear inclusions in 3.5 ± 1.2% of the sedimentary cells. Ultrastructural examinations showed that intranuclear inclusions were also identified in the cell sediment of the 3 patients.ConclusionUrine cytology may be a new and non-invasive pathological diagnosis technique for some NIID patients, although the positive rate is not as high as that of skin biopsy, which is a sensitive and reliable pathological method for NIID.
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Affiliation(s)
- Yiyi Zhou
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Pengcheng Huang
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhaojun Huang
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yun Peng
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yilei Zheng
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yaqing Yu
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Min Zhu
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jianwen Deng
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Zhaoxia Wang
- Department of Neurology, Peking University First Hospital, Beijing, China
- *Correspondence: Daojun Hong,
| | - Daojun Hong
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Medical Genetics, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Zhaoxia Wang,
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Wu W, Yu J, Qian X, Wang X, Xu Y, Wang Z, Deng J. Intermediate-length CGG repeat expansion in NOTCH2NLC is associated with pathologically confirmed Alzheimer's disease. Neurobiol Aging 2022; 120:189-195. [DOI: 10.1016/j.neurobiolaging.2022.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/08/2022] [Accepted: 09/10/2022] [Indexed: 10/14/2022]
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22
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Cao Y, Tian W, Wu J, Song X, Cao L, Luan X. DNA hypermethylation of NOTCH2NLC in neuronal intranuclear inclusion disease: a case-control study. J Neurol 2022; 269:6049-6057. [PMID: 35857137 DOI: 10.1007/s00415-022-11272-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/27/2022] [Accepted: 07/04/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND GGC repeat expansions in NOTCH2NLC gene have been recently proposed to cause neuronal intranuclear inclusion disease (NIID) via prevailing gain-of-function mechanism (protein and RNA toxicity). Nevertheless, increasing evidences suggest that epigenetics can also play a role in the pathogenesis of repeat-mediated disorders. METHODS In this study, using MethylTarget sequencing, we performed a quantitative analysis of the methylation status of 68 CpG sites located around the NOTCH2NLC promoter in 25 NIID patients and 25 age- and gender-matched healthy controls. We further explored the correlation of DNA methylation (DNAm) status with disease features and performed receiver operating characteristic (ROC) analysis. RESULTS DNAm levels of GGC repeats and adjacent CpG islands were higher in the NIID patients than in controls, independent of gender and family history. DNAm levels at 4 CpG sites (CpG_207, CpG_421, GpG_473 and CpG_523) were negatively correlated with age at onset, and DNAm levels at 7 CpG sites (CpG_25, CpG_298, CpG_336, CpG_374, CpG_411, CpG_421 and CpG_473) were positively correlated with GGC repeats. NIID patients had concomitant system symptoms besides nervous system symptoms, and negative correlations between NOTCH2NLC DNAm levels and the number of multi-systemic involvement were observed in the study. The area under the ROC curve at NOTCH2NLC DNAm level reached to 0.733 for the best cutoff point of 0.012. CONCLUSIONS Our findings suggested the aberrant DNAm status of the NOTCH2NLC promoter in NIID, and we explored the link between DNAm levels and disease features quantitatively for the first time, which may help to further explore pathogenic mechanism.
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Affiliation(s)
- Yuwen Cao
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Wotu Tian
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Jingying Wu
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Xingwang Song
- Institute of Neuroscience and Department of Neurology, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Li Cao
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.
| | - Xinghua Luan
- Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.
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Zeng YH, Yang K, Du GQ, Chen YK, Cao CY, Qiu YS, He J, Lv HD, Qu QQ, Chen JN, Xu GR, Chen L, Zheng FZ, Zhao M, Lin MT, Chen WJ, Hu J, Wang ZQ, Wang N. GGC repeat expansion of RILPL1 is associated with oculopharyngodistal myopathy. Ann Neurol 2022; 92:512-526. [PMID: 35700120 DOI: 10.1002/ana.26436] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 05/04/2022] [Accepted: 05/23/2022] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Oculopharyngodistal myopathy (OPDM) is an adult-onset neuromuscular disease characterized by progressive ptosis, dysarthria, ophthalmoplegia, and distal muscle weakness. Recent studies revealed GGC repeat expansions in 5'-UTR of LRP12, GIPC1, and NOTCH2NLC are associated with OPDM. Despite these advances, around 30% of OPDM patients remain genetically undiagnosed. Herein, we aim to investigate genetic basis for undiagnosed OPDM patients in two unrelated Chinese Han families. METHODS Parametric linkage analysis was performed. Long-read sequencing followed by repeat-primed polymerase chain reaction (RP-PCR) and amplicon length polymerase chain reaction (AL-PCR) were used to determine the genetic cause. Targeted methylation sequencing was implemented to detect epigenetic changes. The possible pathogenesis mechanism was investigated by qPCR, immunoblotting, RNA FISH, and immunofluorescence staining of muscle biopsy samples. RESULTS The disease locus was mapped to 12q24.3. Subsequently, GGC repeat expansion in the promoter region of RILPL1 was identified in six OPDM patients from two families, findings consistent with a founder effect, designated as OPDM type 4 (OPDM4). Targeted methylation sequencing revealed hypermethylation at RILPL1 locus in unaffected individuals with ultralong expansion. Analysis of muscle samples showed no significant differences in RILPL1 mRNA or RILPL1 protein levels between patients and controls. Public CAGE-seq data indicated that alternative TSSs exist upstream of the RefSeq-annotated RILPL1 TSS. Strand-specific RNAseq data revealed bidirectional transcription from the RILPL1 locus. Finally, FISH/IF indicated that both sense and antisense transcripts formed RNA foci and were co-localized with hnRNPA2B1 and p62 in the intranuclear inclusions of OPDM4 patients. INTERPRETATION Our findings implicate abnormal GGC repeat expansions in the promoter region of RILPL1 as a novel genetic cause for OPDM, and suggest a methylation mechanism and a potential RNA toxicity mechanism are involved in OPDM4 pathogenesis. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yi-Heng Zeng
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Kang Yang
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Gan-Qin Du
- The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471000, China
| | - Yi-Kun Chen
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Chun-Yan Cao
- The First Affiliated Hospital, College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471000, China
| | - Yu-Sen Qiu
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Jin He
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Hai-Dong Lv
- Department of Neurology, The People's Hospital of Jiaozuo City, Jiaozuo, 454150, China
| | - Qian-Qian Qu
- Department of Neurology, The People's Hospital of Jiaozuo City, Jiaozuo, 454150, China
| | - Jian-Nan Chen
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Guo-Rong Xu
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Long Chen
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Fu-Ze Zheng
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Miao Zhao
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Min-Ting Lin
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Wan-Jin Chen
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Jing Hu
- Department of Neuromuscular Disorders, The Third Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Zhi-Qiang Wang
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
| | - Ning Wang
- Department of Neurology and Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, and Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, 350005, China
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Liufu T, Zheng Y, Yu J, Yuan Y, Wang Z, Deng J, Hong D. The polyG diseases: a new disease entity. Acta Neuropathol Commun 2022; 10:79. [PMID: 35642014 PMCID: PMC9153130 DOI: 10.1186/s40478-022-01383-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/16/2022] [Indexed: 12/20/2022] Open
Abstract
Recently, inspired by the similar clinical and pathological features shared with fragile X-associated tremor/ataxia syndrome (FXTAS), abnormal expansion of CGG repeats in the 5' untranslated region has been found in neuronal intranuclear inclusion disease (NIID), oculopharyngeal myopathy with leukoencephalopathy (OPML), and oculopharyngodistal myopathy (OPDMs). Although the upstream open reading frame has not been elucidated in OPML and OPDMs, polyglycine (polyG) translated by expanded CGG repeats is reported to be as a primary pathogenesis in FXTAS and NIID. Collectively, these findings indicate a new disease entity, the polyG diseases. In this review, we state the common clinical manifestations, pathological features, mechanisms, and potential therapies in these diseases, and provide preliminary opinions about future research in polyG diseases.
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Affiliation(s)
- Tongling Liufu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Yilei Zheng
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jiaxi Yu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Yun Yuan
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Zhaoxia Wang
- Department of Neurology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Jianwen Deng
- Department of Neurology, Peking University First Hospital, Beijing, China. .,Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China.
| | - Daojun Hong
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China. .,Department of Medical Genetics, The First Affiliated Hospital of Nanchang University, Nanchang, China.
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25
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Boivin M, Charlet-Berguerand N. Trinucleotide CGG Repeat Diseases: An Expanding Field of Polyglycine Proteins? Front Genet 2022; 13:843014. [PMID: 35295941 PMCID: PMC8918734 DOI: 10.3389/fgene.2022.843014] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 01/31/2022] [Indexed: 12/30/2022] Open
Abstract
Microsatellites are repeated DNA sequences of 3–6 nucleotides highly variable in length and sequence and that have important roles in genomes regulation and evolution. However, expansion of a subset of these microsatellites over a threshold size is responsible of more than 50 human genetic diseases. Interestingly, some of these disorders are caused by expansions of similar sequences, sizes and localizations and present striking similarities in clinical manifestations and histopathological features, which suggest a common mechanism of disease. Notably, five identical CGG repeat expansions, but located in different genes, are the causes of fragile X-associated tremor/ataxia syndrome (FXTAS), neuronal intranuclear inclusion disease (NIID), oculopharyngodistal myopathy type 1 to 3 (OPDM1-3) and oculopharyngeal myopathy with leukoencephalopathy (OPML), which are neuromuscular and neurodegenerative syndromes with overlapping symptoms and similar histopathological features, notably the presence of characteristic eosinophilic ubiquitin-positive intranuclear inclusions. In this review we summarize recent finding in neuronal intranuclear inclusion disease and FXTAS, where the causing CGG expansions were found to be embedded within small upstream ORFs (uORFs), resulting in their translation into novel proteins containing a stretch of polyglycine (polyG). Importantly, expression of these polyG proteins is toxic in animal models and is sufficient to reproduce the formation of ubiquitin-positive intranuclear inclusions. These data suggest the existence of a novel class of human genetic pathology, the polyG diseases, and question whether a similar mechanism may exist in other diseases, notably in OPDM and OPML.
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26
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Schröder C, Horsthemke B, Depienne C. GC-rich repeat expansions: associated disorders and mechanisms. MED GENET-BERLIN 2021; 33:325-335. [PMID: 38835438 PMCID: PMC11006399 DOI: 10.1515/medgen-2021-2099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 11/12/2021] [Indexed: 06/06/2024]
Abstract
Noncoding repeat expansions are a well-known cause of genetic disorders mainly affecting the central nervous system. Missed by most standard technologies used in routine diagnosis, pathogenic noncoding repeat expansions have to be searched for using specific techniques such as repeat-primed PCR or specific bioinformatics tools applied to genome data, such as ExpansionHunter. In this review, we focus on GC-rich repeat expansions, which represent at least one third of all noncoding repeat expansions described so far. GC-rich expansions are mainly located in regulatory regions (promoter, 5' untranslated region, first intron) of genes and can lead to either a toxic gain-of-function mediated by RNA toxicity and/or repeat-associated non-AUG (RAN) translation, or a loss-of-function of the associated gene, depending on their size and their methylation status. We herein review the clinical and molecular characteristics of disorders associated with these difficult-to-detect expansions.
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Affiliation(s)
- Christopher Schröder
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Bernhard Horsthemke
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Christel Depienne
- Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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27
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Fukuda H, Yamaguchi D, Nyquist K, Yabuki Y, Miyatake S, Uchiyama Y, Hamanaka K, Saida K, Koshimizu E, Tsuchida N, Fujita A, Mitsuhashi S, Ohbo K, Satake Y, Sone J, Doi H, Morihara K, Okamoto T, Takahashi Y, Wenger AM, Shioda N, Tanaka F, Matsumoto N, Mizuguchi T. Father-to-offspring transmission of extremely long NOTCH2NLC repeat expansions with contractions: genetic and epigenetic profiling with long-read sequencing. Clin Epigenetics 2021; 13:204. [PMID: 34774111 PMCID: PMC8590777 DOI: 10.1186/s13148-021-01192-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 10/27/2021] [Indexed: 12/11/2022] Open
Abstract
Background GGC repeat expansions in NOTCH2NLC are associated with neuronal intranuclear inclusion disease. Very recently, asymptomatic carriers with NOTCH2NLC repeat expansions were reported. In these asymptomatic individuals, the CpG island in NOTCH2NLC is hypermethylated, suggesting that two factors repeat length and DNA methylation status should be considered to evaluate pathogenicity. Long-read sequencing can be used to simultaneously profile genomic and epigenomic alterations. We analyzed four sporadic cases with NOTCH2NLC repeat expansion and their phenotypically normal parents. The native genomic DNA that retains base modification was sequenced on a per-trio basis using both PacBio and Oxford Nanopore long-read sequencing technologies. A custom workflow was developed to evaluate DNA modifications. With these two technologies combined, long-range DNA methylation information was integrated with complete repeat DNA sequences to investigate the genetic origins of expanded GGC repeats in these sporadic cases. Results In all four families, asymptomatic fathers had longer expansions (median: 522, 390, 528 and 650 repeats) compared with their affected offspring (median: 93, 117, 162 and 140 repeats, respectively). These expansions are much longer than the disease-causing range previously reported (in general, 41–300 repeats). Repeat lengths were extremely variable in the father, suggesting somatic mosaicism. Instability is more frequent in alleles with uninterrupted pure GGCs. Single molecule epigenetic analysis revealed complex DNA methylation patterns and epigenetic heterogeneity. We identified an aberrant gain-of-methylation region (2.2 kb in size beyond the CpG island and GGC repeats) in asymptomatic fathers. This methylated region was unmethylated in the normal allele with bilateral transitional zones with both methylated and unmethylated CpG dinucleotides, which may be protected from methylation to ensure NOTCH2NLC expression. Conclusions We clearly demonstrate that the four sporadic NOTCH2NLC-related cases are derived from the paternal GGC repeat contraction associated with demethylation. The entire genetic and epigenetic landscape of the NOTCH2NLC region was uncovered using the custom workflow of long-read sequence data, demonstrating the utility of this method for revealing epigenetic/mutational changes in repetitive elements, which are difficult to characterize by conventional short-read/bisulfite sequencing methods. Our approach should be useful for biomedical research, aiding the discovery of DNA methylation abnormalities through the entire genome. Supplementary Information The online version contains supplementary material available at 10.1186/s13148-021-01192-5.
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Affiliation(s)
- Hiromi Fukuda
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.,Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | | | | | - Yasushi Yabuki
- Department of Genomic Neurology, Institute of Molecular Embryology and Genetics (IMEG), Kumamoto University, Kumamoto, Japan.,Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Satoko Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.,Clinical Genetics Department, Yokohama City University Hospital, Yokohama, Japan
| | - Yuri Uchiyama
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.,Department of Rare Disease Genomics, Yokohama City University Hospital, Yokohama, Japan
| | - Kohei Hamanaka
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Ken Saida
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Eriko Koshimizu
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Naomi Tsuchida
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.,Department of Rare Disease Genomics, Yokohama City University Hospital, Yokohama, Japan
| | - Atsushi Fujita
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Satomi Mitsuhashi
- Department of Genomic Function and Diversity, Medical Research Institute Tokyo Medical and Dental University, Tokyo, Japan
| | - Kazuyuki Ohbo
- Department of Histology and Cell Biology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Yuki Satake
- Department of Neurology, Yokkaichi Municipal Hospital, Yokkaichi, Japan
| | - Jun Sone
- Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Nagakute, Japan.,Department of Neurology, National Hospital Organization Suzuka National Hospital, Suzuka, Japan
| | - Hiroshi Doi
- Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Keisuke Morihara
- Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Tomoko Okamoto
- Department of Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Yuji Takahashi
- Department of Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | | | - Norifumi Shioda
- Department of Genomic Neurology, Institute of Molecular Embryology and Genetics (IMEG), Kumamoto University, Kumamoto, Japan.,Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Fumiaki Tanaka
- Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.
| | - Takeshi Mizuguchi
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.
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28
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Cao L, Yan Y, Zhao G. NOTCH2NLC-related repeat expansion disorders: an expanding group of neurodegenerative disorders. Neurol Sci 2021; 42:4055-4062. [PMID: 34333668 DOI: 10.1007/s10072-021-05498-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 07/18/2021] [Indexed: 12/22/2022]
Abstract
The NOTCH2NLC gene 5' untranslated region (UTR) GGC repeat expansion mutations were identified as a genetic contributor of neuronal intranuclear inclusion disease (NIID) in 2019. Since then, the number of reported cases with NOTCH2NLC GGC repeat expansion in Asian and European populations has increased rapidly, indicating that the expanded mutation not only leads to the onset or progression of the NIID, but also may play an important role in multiple progressive neurological disorders, including Parkinson's disease, essential tremor, multiple system atrophy, Alzheimer's disease, frontotemporal dementia, amyotrophic lateral sclerosis, leukoencephalopathy, and oculopharyngodistal myopathy type 3. Nevertheless, the underlying pathogenic mechanism of the NOTCH2NLC 5' UTR region GGC repeat expansion in these disorders remains largely unknown. This review aims to present recent breakthroughs on this mutation and improve our knowledge of a newly defined spectrum of disease: NOTCH2NLC-related repeat expansion disorder.
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Affiliation(s)
- Lanxiao Cao
- Department of Neurology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, N1 Shangcheng Avenue, Yiwu, 322000, Zhejiang Province, China
| | - Yaping Yan
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University School of Medicine, No.88 Jiefang Road, Hangzhou, 310009, Zhejiang Province, China.
| | - Guohua Zhao
- Department of Neurology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, N1 Shangcheng Avenue, Yiwu, 322000, Zhejiang Province, China.
- Department of Neurology, The Second Affiliated Hospital, Zhejiang University School of Medicine, No.88 Jiefang Road, Hangzhou, 310009, Zhejiang Province, China.
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29
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Wang H, Yu J, Yu M, Deng J, Zhang W, Lv H, Liu J, Shi X, Liang W, Jia Z, Hong D, Meng L, Wang Z, Yuan Y. GGC Repeat Expansion in the NOTCH2NLC Gene Is Associated With a Phenotype of Predominant Motor-Sensory and Autonomic Neuropathy. Front Genet 2021; 12:694790. [PMID: 34306035 PMCID: PMC8293674 DOI: 10.3389/fgene.2021.694790] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 06/07/2021] [Indexed: 12/29/2022] Open
Abstract
There is still a considerable proportion of patients with inherited peripheral neuropathy (IPN) whose pathogenic genes are unknown. This study was intended to investigate whether the GGC repeat expansion in the NOTCH2NLC is presented in some patients with IPN. A total of 142 unrelated mainland Chinese patients with highly suspected diagnosis of IPN without any known causative gene were recruited. Repeat-primed polymerase chain reaction (RP-PCR) was performed to screen GGC repeat expansion in NOTCH2NLC, followed by fluorescence amplicon length analysis-PCR (AL-PCR) to determine the GGC repeat size. Detailed clinical data as well as nerve, muscle, and skin biopsy were reviewed and analyzed in the NOTCH2NLC-related IPN patients. In total, five of the 142 patients (3.52%) were found to have pathogenic GGC expansion in NOTCH2NLC, with repeat size ranging from 126 to 206 repeats. All the NOTCH2NLC-related IPN patients presented with adult-onset motor-sensory and autonomic neuropathy that predominantly affected the motor component of peripheral nerves. While tremor and irritating dry cough were noted in four-fifths of the patients, no other signs of the central nervous system were presented. Electrophysiological studies revealed both demyelinating and axonal changes of polyneuropathy that were more severe in lower limbs and asymmetrically in upper limbs. Sural nerve pathology was characterized by multiple fibers with thin myelination, indicating a predominant demyelinating process. Muscle pathology was consistent with neuropathic changes. P62-positive intranuclear inclusions were observed in nerve, skin, and muscle tissues. Our study has demonstrated that GGC expansion in NOTCH2NLC is associated with IPN presenting as predominant motor-sensory and autonomic neuropathy, which expands the phenotype of the NOTCH2NLC-related repeat expansion spectrum. Screening of GGC repeat expansions in the NOTCH2NLC should be considered in patients presenting with peripheral neuropathy with tremor and irritating dry cough.
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Affiliation(s)
- Hui Wang
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Jiaxi Yu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Meng Yu
- Department of Neurology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Jianwen Deng
- Department of Neurology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Wei Zhang
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - He Lv
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Jing Liu
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Xin Shi
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Wei Liang
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Zhirong Jia
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Daojun Hong
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Lingchao Meng
- Department of Neurology, Peking University First Hospital, Beijing, China
| | - Zhaoxia Wang
- Department of Neurology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Yun Yuan
- Department of Neurology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
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