1
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Morito D. Molecular structure and function of mysterin/RNF213. J Biochem 2024; 175:495-505. [PMID: 38378744 DOI: 10.1093/jb/mvae020] [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: 12/05/2023] [Revised: 01/19/2024] [Accepted: 01/24/2024] [Indexed: 02/22/2024] Open
Abstract
Mysterin is a large intracellular protein harboring a RING finger ubiquitin ligase domain and is also referred to as RING finger protein 213 (RNF213). The author performed the first molecular cloning of the mysterin gene as the final step in genetic exploration of cerebrovascular moyamoya disease (MMD) and initiated the next round of exploration to understand its molecular and cellular functions. Although much remains unknown, accumulating findings suggest that mysterin functions in cells by targeting massive intracellular structures, such as lipid droplets (LDs) and various invasive pathogens. In the latter case, mysterin appears to directly surround and ubiquitylate the surface of pathogens and stimulate cell-autonomous antimicrobial reactions, such as xenophagy and inflammatory response. To date, multiple mutations causing MMD have been identified within and near the RING finger domain of mysterin; however, their functional relevance remains largely unknown. Besides the RING finger, mysterin harbors a dynein-like ATPase core and an RZ finger, another ubiquitin ligase domain unique to mysterin, while functional exploration of these domains has also just commenced. In this review, the author attempts to summarize the core findings regarding the molecular structure and function of the mysterin protein, with an emphasis on the perspective of MMD research.
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Affiliation(s)
- Daisuke Morito
- Department of Biochemistry, Showa University School of Medicine, Hatanodai 1-5-8, Shinagawa, Tokyo 142-0064, Japan
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2
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Murai Y, Matano F, Kubota A, Nounaka Y, Ishisaka E, Shirokane K, Koketsu K, Nakae R, Tamaki T. RNF213-Related Vasculopathy: Various Systemic Vascular Diseases Involving RNF213 Gene Mutations: Review. J NIPPON MED SCH 2024; 91:140-145. [PMID: 38777780 DOI: 10.1272/jnms.jnms.2024_91-215] [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] [Indexed: 05/25/2024]
Abstract
Moyamoya disease (MMD) is a cerebrovascular disorder that is predominantly observed in women of East Asian descent, and is characterized by progressive stenosis of the internal carotid artery, beginning in early childhood, and a distinctive network of collateral vessels known as "moyamoya vessels" in the basal ganglia. Additionally, a prevalent genetic variant found in most MMD cases is the p.R4810K polymorphism of RNF213 on chromosome 17q25.3. Recent studies have revealed that RNF213 mutations are associated not only with MMD, but also with other systemic vascular disorders, including intracranial atherosclerosis and systemic vascular abnormalities such as pulmonary artery stenosis and coronary artery diseases. Therefore, the concept of "RNF213-related vasculopathy" has been proposed. This review focuses on polymorphisms in the RNF213 gene and describes a wide range of clinical and genetic phenotypes associated with RNF213-related vasculopathy. The RNF213 gene has been suggested to play an important role in the pathogenesis of vascular diseases and developing new therapies. Therefore, further research and knowledge sharing through collaboration between clinicians and researchers are required.
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Affiliation(s)
- Yasuo Murai
- Department of Neurological Surgery, Nippon Medical School Hospital
| | - Fumihiro Matano
- Department of Neurological Surgery, Nippon Medical School Hospital
| | - Asami Kubota
- Department of Neurological Surgery, Nippon Medical School Hospital
| | - Yohei Nounaka
- Department of Neurological Surgery, Nippon Medical School Hospital
| | - Eitaro Ishisaka
- Department of Neurological Surgery, Nippon Medical School Musashi Kosugi Hospital
| | - Kazutaka Shirokane
- Department of Neurological Surgery, Nippon Medical School Chiba Hokusoh Hospital
| | - Kenta Koketsu
- Department of Neurological Surgery, Nippon Medical School Chiba Hokusoh Hospital
| | - Ryuta Nakae
- Department of Emergency and Critical Care Medicine, Nippon Medical School Hospital
| | - Tomonori Tamaki
- Department of Neurological Surgery, Nippon Medical School Tama Nagayama Hospital
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3
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Ye F, Niu X, Liang F, Dai Y, Liang J, Li J, Wu X, Zheng H, Qi T, Sheng W. RNF213 loss-of-function promotes pathological angiogenesis in moyamoya disease via the Hippo pathway. Brain 2023; 146:4674-4689. [PMID: 37399508 PMCID: PMC10629795 DOI: 10.1093/brain/awad225] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 06/01/2023] [Accepted: 06/18/2023] [Indexed: 07/05/2023] Open
Abstract
Moyamoya disease is an uncommon cerebrovascular disorder characterized by steno-occlusive changes in the circle of Willis and abnormal vascular network development. Ring finger protein 213 (RNF213) has been identified as an important susceptibility gene for Asian patients, but researchers have not completely elucidated whether RNF213 mutations affect the pathogenesis of moyamoya disease. Using donor superficial temporal artery samples, whole-genome sequencing was performed to identify RNF213 mutation types in patients with moyamoya disease, and histopathology was performed to compare morphological differences between patients with moyamoya disease and intracranial aneurysm. The vascular phenotype of RNF213-deficient mice and zebrafish was explored in vivo, and RNF213 knockdown in human brain microvascular endothelial cells was employed to analyse cell proliferation, migration and tube formation abilities in vitro. After bioinformatics analysis of both cell and bulk RNA-seq data, potential signalling pathways were measured in RNF213-knockdown or RNF213-knockout endothelial cells. We found that patients with moyamoya disease carried pathogenic mutations of RNF213 that were positively associated with moyamoya disease histopathology. RNF213 deletion exacerbated pathological angiogenesis in the cortex and retina. Reduced RNF213 expression led to increased endothelial cell proliferation, migration and tube formation. Endothelial knockdown of RNF213 activated the Hippo pathway effector Yes-associated protein (YAP)/tafazzin (TAZ) and promoted the overexpression of the downstream effector VEGFR2. Additionally, inhibition of YAP/TAZ resulted in altered cellular VEGFR2 distribution due to defects in trafficking from the Golgi apparatus to the plasma membrane and reversed RNF213 knockdown-induced angiogenesis. All these key molecules were validated in ECs isolated from RNF213-deficient animals. Our findings may suggest that loss-of-function of RNF213 mediates the pathogenesis of moyamoya disease via the Hippo pathway.
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Affiliation(s)
- Fei Ye
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
- Department of Neurosurgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Xingyang Niu
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Feng Liang
- Department of Neurosurgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Yuanyuan Dai
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
- Department of Neurology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 517108, China
| | - Jie Liang
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Jiaoxing Li
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Xiaoxin Wu
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Hanyue Zheng
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Tiewei Qi
- Department of Neurosurgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Wenli Sheng
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
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4
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Ogura S, Ohara T, Tanaka E, Ashida S, Maezono-Kandori K, Hanya M, Mizuta I, Mizuno T. Clinical characteristics and intracranial arterial lesions of non-young adult ischemic stroke patients with RNF213 p.R4810K variant. J Neurol Sci 2023; 452:120775. [PMID: 37657303 DOI: 10.1016/j.jns.2023.120775] [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: 04/16/2023] [Revised: 08/01/2023] [Accepted: 08/24/2023] [Indexed: 09/03/2023]
Abstract
BACKGROUND Although RNF213 p.R4810K, a genetic susceptibility variant for moyamoya disease (MMD), is associated with intracranial artery stenosis/occlusion (ICASO), the impact of this variant on ischemic stroke patients in non-young adults is unclear. We aimed to determine the characteristics of non-young adult stroke patients with RNF213 p.R4810K. METHODS We retrospectively identified acute ischemic stroke patients ≥50 years who were admitted to our hospital and underwent intracranial vascular imaging. We reviewed the patients with RNF213 p.R4810K and compared stroke characteristics and the frequency and location of ICASO between patients with and without the variant. RESULTS Among 341 patients, RNF213 p.R4810K was identified in 7 patients (2.1%). Five of the 7 patients with the variant (71%) had multiple ICASO without any finding of MMD and remaining 2 patients had no ICASO. The presumed etiologies of ICASO were atherosclerosis in 3 cases, vasculitis in 1, and undetermined vasculopathy in 1. ICASO in the anterior circulation was more common in patients with the variant than in those without (71% vs. 25%). The internal carotid artery, the M1 segment of the middle cerebral artery, the A1 segment of the anterior cerebral artery, and the P1 segment of the posterior cerebral artery, which were the most frequently affected arteries in MMD, were more often affected in the variant group. CONCLUSIONS Non-young adult stroke patients with RNF213 p.R4810K are more likely to have ICASO in arterial segments commonly affected in MMD. The etiology of their ICASO exhibited diverse mechanisms, possibly depending on vascular risk and other environmental factors.
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Affiliation(s)
- Shiori Ogura
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Department of Neurology, Kyoto Second Red Cross Hospital, Kyoto, Japan
| | - Tomoyuki Ohara
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan.
| | - Eijirou Tanaka
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Shinji Ashida
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Keiko Maezono-Kandori
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Department of Neurology, Kyoto Second Red Cross Hospital, Kyoto, Japan
| | - Misaki Hanya
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Department of Neurology, North Medical Center, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Ikuko Mizuta
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Toshiki Mizuno
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
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5
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Gerovska D, Araúzo-Bravo MJ. Skeletal Muscles of Sedentary and Physically Active Aged People Have Distinctive Genic Extrachromosomal Circular DNA Profiles. Int J Mol Sci 2023; 24:ijms24032736. [PMID: 36769072 PMCID: PMC9917053 DOI: 10.3390/ijms24032736] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/19/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023] Open
Abstract
To bring new extrachromosomal circular DNA (eccDNA) enrichment technologies closer to the clinic, specifically for screening, early diagnosis, and monitoring of diseases or lifestyle conditions, it is paramount to identify the differential pattern of the genic eccDNA signal between two states. Current studies using short-read sequenced purified eccDNA data are based on absolute numbers of unique eccDNAs per sample or per gene, length distributions, or standard methods for RNA-seq differential analysis. Previous analyses of RNA-seq data found significant transcriptomics difference between sedentary and active life style skeletal muscle (SkM) in young people but very few in old. The first attempt using circulomics data from SkM and blood of aged lifelong sedentary and physically active males found no difference at eccDNA level. To improve the capability of finding differences between circulomics data groups, we designed a computational method to identify Differentially Produced per Gene Circles (DPpGCs) from short-read sequenced purified eccDNA data based on the circular junction, split-read signal, of the eccDNA, and implemented it into a software tool DifCir in Matlab. We employed DifCir to find to the distinctive features of the influence of the physical activity or inactivity in the aged SkM that would have remained undetected by transcriptomics methods. We mapped the data from tissue from SkM and blood from two groups of aged lifelong sedentary and physically active males using Circle_finder and subsequent merging and filtering, to find the number and length distribution of the unique eccDNA. Next, we used DifCir to find up-DPpGCs in the SkM of the sedentary and active groups. We assessed the functional enrichment of the DPpGCs using Disease Gene Network and Gene Set Enrichment Analysis. To find genes that produce eccDNA in a group without comparison with another group, we introduced a method to find Common PpGCs (CPpGCs) and used it to find CPpGCs in the SkM of the sedentary and active group. Finally, we found the eccDNA that carries whole genes. We discovered that the eccDNA in the SkM of the sedentary group is not statistically different from that of physically active aged men in terms of number and length distribution of eccDNA. In contrast, with DifCir we found distinctive gene-associated eccDNA fingerprints. We identified statistically significant up-DPpGCs in the two groups, with the top up-DPpGCs shed by the genes AGBL4, RNF213, DNAH7, MED13, and WWTR1 in the sedentary group, and ZBTB7C, TBCD, ITPR2, and DDX11-AS1 in the active group. The up-DPpGCs in both groups carry mostly gene fragments rather than whole genes. Though the subtle transcriptomics difference, we found RYR1 to be both transcriptionally up-regulated and up-DPpGCs gene in sedentary SkM. DifCir emphasizes the high sensitivity of the circulome compared to the transcriptome to detect the molecular fingerprints of exercise in aged SkM. It allows efficient identification of gene hotspots that excise more eccDNA in a health state or disease compared to a control condition.
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Affiliation(s)
- Daniela Gerovska
- Computational Biology and Systems Biomedicine, Biodonostia Health Research Institute, Calle Doctor Begiristain s/n, 20014 San Sebastian, Spain
- Correspondence: (D.G.); (M.J.A.-B.)
| | - Marcos J. Araúzo-Bravo
- Computational Biology and Systems Biomedicine, Biodonostia Health Research Institute, Calle Doctor Begiristain s/n, 20014 San Sebastian, Spain
- Basque Foundation for Science, IKERBASQUE, Calle María Díaz Harokoa 3, 48013 Bilbao, Spain
- CIBER of Frailty and Healthy Aging (CIBERfes), 28029 Madrid, Spain
- Max Planck Institute for Molecular Biomedicine, Computational Biology and Bioinformatics, Röntgenstr. 20, 48149 Münster, Germany
- Department of Cell Biology and Histology, Faculty of Medicine and Nursing, University of Basque Country (UPV/EHU), 48940 Leioa, Spain
- Correspondence: (D.G.); (M.J.A.-B.)
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6
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Zhang L, Rashad S, Zhou Y, Niizuma K, Tominaga T. RNF213 loss of function reshapes vascular transcriptome and spliceosome leading to disrupted angiogenesis and aggravated vascular inflammatory responses. J Cereb Blood Flow Metab 2022; 42:2107-2122. [PMID: 35754359 PMCID: PMC9580177 DOI: 10.1177/0271678x221110679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
RNF213 gene mutations are the cause behind Moyamoya disease, a rare cerebrovascular occlusive disease. However, the function of RNF213 in the vascular system and the impact of its loss of function are not yet comprehended. To understand RNF23 function, we performed gene knockdown (KD) in vascular cells and performed various phenotypical analysis as well as extensive transcriptome and epitranscriptome profiling. Our data revealed that RNF213 KD led to disrupted angiogenesis in HUVEC, in part due to downregulation of DNA replication and proliferation pathways. Furthermore, HUVEC cells became sensitive to LPS induced inflammation after RNF213 KD, leading to retarded cell migration and enhanced macrophage transmigration. This was evident at the level of transcriptome as well. Interestingly, RNF213 led to extensive changes in mRNA splicing that were not previously reported. In vascular smooth muscle cells (vSMCs), RNF213 KD led to alteration in cytoskeletal organization, contractility, and vSMCs function related pathways. Finally, RNF213 KD disrupted endothelial-to-vSMCs communication in co-culture models. Overall, our results indicate that RNF213 KD sensitizes endothelial cells to inflammation, leading to altered angiogenesis. Our results shed the light on the important links between RNF213 mutations and inflammatory/immune inducers of MMD and on the unexplored role of epitranscriptome in MMD.
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Affiliation(s)
- Liyin Zhang
- Department of Neurosurgical Engineering and Translational Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Sherif Rashad
- Department of Neurosurgical Engineering and Translational Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan.,Department of Neurosurgical Engineering and Translational Neuroscience, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan.,Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yuan Zhou
- Department of Neurosurgical Engineering and Translational Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kuniyasu Niizuma
- Department of Neurosurgical Engineering and Translational Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan.,Department of Neurosurgical Engineering and Translational Neuroscience, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan.,Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Teiji Tominaga
- Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
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7
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Sudhir BJ, Keelara AG, Venkat EH, Kazumata K, Sundararaman A. The mechanobiological theory: a unifying hypothesis on the pathogenesis of moyamoya disease based on a systematic review. Neurosurg Focus 2021; 51:E6. [PMID: 34469862 DOI: 10.3171/2021.6.focus21281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/17/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Moyamoya angiopathy (MMA) affects the distal internal carotid artery and is designated as moyamoya disease (MMD) when predisposing conditions are absent, or moyamoya syndrome (MMS) when it occurs secondary to other causes. The authors aimed to investigate the reason for this anatomical site predilection of MMA. There is compelling evidence to suggest that MMA is a phenomenon that occurs due to stereotyped mechanobiological processes. Literature regarding MMD and MMS was systematically reviewed to decipher a common pattern relating to the development of MMA. METHODS A systematic review was conducted to understand the pathogenesis of MMA in accordance with PRISMA guidelines. PubMed MEDLINE and Scopus were searched using "moyamoya" and "pathogenesis" as common keywords and specific keywords related to six identified key factors. Additionally, a literature search was performed for MMS using "moyamoya" and "pathogenesis" combined with reported associations. A progressive search of the literature was also performed using the keywords "matrix metalloprotease," "tissue inhibitor of matrix metalloprotease," "endothelial cell," "smooth muscle cell," "cytokines," "endothelin," and "transforming growth factor" to infer the missing links in molecular pathogenesis of MMA. Studies conforming to the inclusion criteria were reviewed. RESULTS The literature search yielded 44 published articles on MMD by using keywords classified under the six key factors, namely arterial tortuosity, vascular angles, wall shear stress, molecular factors, blood rheology/viscosity, and blood vessel wall strength, and 477 published articles on MMS associations. Information obtained from 51 articles that matched the inclusion criteria and additional information derived from the progressive search mentioned above were used to connect the key factors to derive a network pattern of pathogenesis. CONCLUSIONS Based on the available literature, the authors have proposed a unifying theory for the pathogenesis of MMA. The moyamoya phenomenon appears to be the culmination of an interplay of vascular anatomy, hemodynamics, rheology, blood vessel wall strength, and a plethora of intricately linked mechanobiological molecular mediators that ultimately results in the mechanical process of occlusion of the blood vessel, stimulating angiogenesis and collateral blood supply in an attempt to perfuse the compromised brain.
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Affiliation(s)
- Bhanu Jayanand Sudhir
- 1Department of Neurosurgery, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala State, India
| | - Arun Gowda Keelara
- 1Department of Neurosurgery, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala State, India
| | - Easwer Harihara Venkat
- 1Department of Neurosurgery, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala State, India
| | - Ken Kazumata
- 2Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan; and
| | - Ananthalakshmy Sundararaman
- 3Department of Cardiovascular Diseases and Diabetes Biology, Rajiv Gandhi Centre for Biotechnology, Trivandrum, Kerala State, India
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8
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Strong A, O'Grady G, Shih E, Bishop JR, Loomes K, Diamond T, Hartung EA, Wong W, Cuddapah S, Cahill AM, Hou C, Slater D, Vaccaro C, Watson D, Li D, Hakonarson H. A new syndrome of moyamoya disease, kidney dysplasia, aminotransferase elevation, and skin disease associated with de novo variants in RNF213. Am J Med Genet A 2021; 185:2168-2174. [PMID: 33960657 PMCID: PMC8360119 DOI: 10.1002/ajmg.a.62215] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/25/2021] [Accepted: 03/29/2021] [Indexed: 12/16/2022]
Abstract
Ring‐finger protein 213 (RNF213) encodes a protein of unknown function believed to play a role in cellular metabolism and angiogenesis. Gene variants are associated with susceptibility to moyamoya disease. Here, we describe two children with moyamoya disease who also demonstrated kidney disease, elevated aminotransferases, and recurrent skin lesions found by exome sequencing to have de novo missense variants in RNF213. These cases highlight the ability of RNF213 to cause Mendelian moyamoya disease in addition to acting as a genetic susceptibility locus. The cases also suggest a new, multi‐organ RNF213‐spectrum disease characterized by liver, skin, and kidney pathology in addition to severe moyamoya disease caused by heterozygous, de novo C‐terminal RNF213 missense variants.
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Affiliation(s)
- Alanna Strong
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Gina O'Grady
- Pediatric Neuroservices, Starship Children's Health, Auckland District Health Board, Auckland, New Zealand
| | - Evelyn Shih
- Division of Neurology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jonathan R Bishop
- Department of Pediatric Gastroenterology, Starship Child Health, Auckland District Health Board, Auckland, New Zealand
| | - Kathleen Loomes
- Division of Gastroenterology, Hepatology, and Nutrition, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Division of Gastroenterology, Hepatology, and Nutrition, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Tamir Diamond
- Division of Gastroenterology, Hepatology, and Nutrition, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Erum A Hartung
- Division of Nephology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - William Wong
- Department of Pediatric Nephrology, Starship Child Health, Auckland District Health Board, Auckland, New Zealand
| | - Sanmati Cuddapah
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Anne Marie Cahill
- Division of Interventional Radiology, Department of Radiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Cuiping Hou
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Diana Slater
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Courtney Vaccaro
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Deborah Watson
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Dong Li
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Hakon Hakonarson
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Division of Pulmonary Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
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9
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Song Y, Choi JE, Kwon YJ, Chang HJ, Kim JO, Park DH, Park JM, Kim SJ, Lee JW, Hong KW. Identification of susceptibility loci for cardiovascular disease in adults with hypertension, diabetes, and dyslipidemia. J Transl Med 2021; 19:85. [PMID: 33632238 PMCID: PMC7905883 DOI: 10.1186/s12967-021-02751-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 02/11/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Hypertension (HTN), diabetes mellitus (DM), and dyslipidemia (DL) are well-known risk factors of cardiovascular disease (CVD), but not all patients develop CVDs. Studies have been limited investigating genetic risk of CVDs specific to individuals with metabolic diseases. This study aimed to identify disease-specific and/or common genetic loci associated with CVD susceptibility in chronic metabolic disease patients. METHODS We conducted a genome-wide association study (GWAS) of a multiple case-control design with data from the City Cohort within Health EXAminees subcohort of the Korean Genome and Epidemiology Study (KoGES_HEXA). KoGES_HEXA is a population-based prospective cohort of 173,357 urban Korean adults that had health examinations at medical centers. 42,393 participants (16,309 HTN; 5,314 DM; 20,770 DL) were analyzed, and each metabolic disease group was divided into three CVD case-controls: coronary artery disease (CAD), ischemic stroke (IS), and cardio-cerebrovascular disease (CCD). GWASs were conducted for each case-control group with 7,975,321 imputed single nucleotide polymorphisms using the Phase 3 Asian panel from 1000 Genomes Project, by logistic regression and controlled for confounding variables. Genome-wide significant levels were implemented to identify important susceptibility loci. RESULTS Totaling 42,393 individuals, this study included 16,309 HTN (mean age [SD], 57.28 [7.45]; 816 CAD, 398 IS, and 1,185 CCD cases), 5,314 DM (57.79 [7.39]; 361 CAD, 153 IS, and 497 CCD cases), and 20,770 DL patients (55.34 [7.63]; 768 CAD, 295 IS, and 1,039 CCD cases). Six genome-wide significant CVD risk loci were identified, with relatively large effect sizes: 1 locus in HTN (HTN-CAD: 17q25.3/CBX8-CBX4 [OR, 2.607; P = 6.37 × 10-9]), 2 in DM (DM-IS: 4q32.3/MARCH1-LINC01207 [OR, 5.587; P = 1.34 × 10-8], and DM-CCD: 17q25.3/RPTOR [OR, 3.511; P = 1.99 × 10-8]), and 3 in DL (DL-CAD: 9q22.2/UNQ6494-LOC101927847 [OR, 2.282; P = 7.78 × 10-9], DL-IS: 3p22.1/ULK4 [OR, 2.162; P = 2.97 × 10-8], and DL-CCD: 2p22.2/CYP1B1-CYP1B1-AS1 [OR, 2.027; P = 4.24 × 10-8]). CONCLUSIONS This study identified 6 susceptibility loci and positional candidate genes for CVDs in HTN, DM, and DL patients using an unprecedented study design. 1 locus (17q25.3) was commonly associated with CAD. These associations warrant validation in additional studies for potential therapeutic applications.
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Affiliation(s)
- Youhyun Song
- Department of Family Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, 211, Eonju-ro, Gangnam-gu, Seoul, 06273, Korea
| | - Ja-Eun Choi
- Healthcare R&D Division, Theragen Bio Co., Ltd., Gwanggyo-ro 145, Suwon-si, Gyeonggi-do, 16229, Republic of Korea
| | - Yu-Jin Kwon
- Department of Family Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, 363, Dongbaekjukjeon-daero, Giheung-gu, Yongin-si, 16995, Gyeonggi-do, Korea
| | - Hyuk-Jae Chang
- Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University College of Medicine, 50-1, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - Jung Oh Kim
- Healthcare R&D Division, Theragen Bio Co., Ltd., Gwanggyo-ro 145, Suwon-si, Gyeonggi-do, 16229, Republic of Korea
| | - Da-Hyun Park
- Healthcare R&D Division, Theragen Bio Co., Ltd., Gwanggyo-ro 145, Suwon-si, Gyeonggi-do, 16229, Republic of Korea
| | - Jae-Min Park
- Department of Family Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, 211, Eonju-ro, Gangnam-gu, Seoul, 06273, Korea
| | - Seong-Jin Kim
- Healthcare R&D Division, Theragen Bio Co., Ltd., Gwanggyo-ro 145, Suwon-si, Gyeonggi-do, 16229, Republic of Korea
| | - Ji Won Lee
- Department of Family Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, 211, Eonju-ro, Gangnam-gu, Seoul, 06273, Korea.
| | - Kyung-Won Hong
- Healthcare R&D Division, Theragen Bio Co., Ltd., Gwanggyo-ro 145, Suwon-si, Gyeonggi-do, 16229, Republic of Korea.
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10
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Piccolis M, Bond LM, Kampmann M, Pulimeno P, Chitraju C, Jayson CBK, Vaites LP, Boland S, Lai ZW, Gabriel KR, Elliott SD, Paulo JA, Harper JW, Weissman JS, Walther TC, Farese RV. Probing the Global Cellular Responses to Lipotoxicity Caused by Saturated Fatty Acids. Mol Cell 2019; 74:32-44.e8. [PMID: 30846318 PMCID: PMC7696670 DOI: 10.1016/j.molcel.2019.01.036] [Citation(s) in RCA: 137] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 12/12/2018] [Accepted: 01/25/2019] [Indexed: 12/22/2022]
Abstract
Excessive levels of saturated fatty acids are toxic to cells, although the basis for this lipotoxicity remains incompletely understood. Here, we analyzed the transcriptome, lipidome, and genetic interactions of human leukemia cells exposed to palmitate. Palmitate treatment increased saturated glycerolipids, accompanied by a transcriptional stress response, including upregulation of the endoplasmic reticulum (ER) stress response. A comprehensive genome-wide short hairpin RNA (shRNA) screen identified >350 genes modulating lipotoxicity. Among previously unknown genetic modifiers of lipotoxicity, depletion of RNF213, a putative ubiquitin ligase mutated in Moyamoya vascular disease, protected cells from lipotoxicity. On a broader level, integration of our comprehensive datasets revealed that changes in di-saturated glycerolipids, but not other lipid classes, are central to lipotoxicity in this model. Consistent with this, inhibition of ER-localized glycerol-3-phosphate acyltransferase activity protected from all aspects of lipotoxicity. Identification of genes modulating the response to saturated fatty acids may reveal novel therapeutic strategies for treating metabolic diseases linked to lipotoxicity.
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Affiliation(s)
- Manuele Piccolis
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Laura M Bond
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Martin Kampmann
- Department of Cellular and Molecular Pharmacology, California Institute for Quantitative Biomedical Research and Howard Hughes Medical Institute, San Francisco, CA 94158, USA
| | - Pamela Pulimeno
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Chandramohan Chitraju
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Christina B K Jayson
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Laura P Vaites
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Sebastian Boland
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Zon Weng Lai
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Katlyn R Gabriel
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Howard Hughes Medical Institute, Boston, MA 02115, USA
| | - Shane D Elliott
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Howard Hughes Medical Institute, Boston, MA 02115, USA
| | - Joao A Paulo
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - J Wade Harper
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Jonathan S Weissman
- Department of Cellular and Molecular Pharmacology, California Institute for Quantitative Biomedical Research and Howard Hughes Medical Institute, San Francisco, CA 94158, USA
| | - Tobias C Walther
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA; Howard Hughes Medical Institute, Boston, MA 02115, USA.
| | - Robert V Farese
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA; Broad Institute of Harvard and MIT, Cambridge, MA 02142, USA.
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11
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Sugihara M, Morito D, Ainuki S, Hirano Y, Ogino K, Kitamura A, Hirata H, Nagata K. The AAA+ ATPase/ubiquitin ligase mysterin stabilizes cytoplasmic lipid droplets. J Cell Biol 2019; 218:949-960. [PMID: 30705059 PMCID: PMC6400562 DOI: 10.1083/jcb.201712120] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 06/26/2018] [Accepted: 01/08/2019] [Indexed: 01/09/2023] Open
Abstract
Mutations in mysterin cause cerebrovascular moyamoya, but the mechanism of pathogenesis is unknown. Sugihara et al. report that mysterin stabilizes cytoplasmic lipid droplets through the activity of ATPase and ubiquitin ligase. Disease-associated mutations in mysterin impair this process, suggesting a potential link between moyamoya disease and metabolism. Mysterin, also known as RNF213, is an intracellular protein that forms large toroidal oligomers. Mysterin was originally identified in genetic studies of moyamoya disease (MMD), a rare cerebrovascular disorder of unknown etiology. While mysterin is known to exert ubiquitin ligase and putative mechanical ATPase activities with a RING finger domain and two adjacent AAA+ modules, its biological role is poorly understood. Here, we report that mysterin is targeted to lipid droplets (LDs), ubiquitous organelles specialized for neutral lipid storage, and markedly increases their abundance in cells. This effect was exerted primarily through specific elimination of adipose triglyceride lipase (ATGL) from LDs. The ubiquitin ligase and ATPase activities of mysterin were both important for its proper LD targeting. Notably, MMD-related mutations in the ubiquitin ligase domain of mysterin significantly impaired its fat-stabilizing activity. Our findings identify a unique new regulator of cytoplasmic LDs and suggest a potential link between the pathogenesis of MMD and fat metabolism.
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Affiliation(s)
| | - Daisuke Morito
- Institute for Protein Dynamics, Kyoto Sangyo University, Kyoto, Japan .,Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Kawaguchi, Japan
| | - Shiori Ainuki
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan
| | - Yoshinobu Hirano
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, Sagamihara, Japan
| | - Kazutoyo Ogino
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, Sagamihara, Japan
| | - Akira Kitamura
- Laboratory of Molecular Cell Dynamics, Faculty of Advanced Life Science, Hokkaido University, Sapporo, Japan
| | - Hiromi Hirata
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, Sagamihara, Japan
| | - Kazuhiro Nagata
- Faculty of Life Sciences, Kyoto Sangyo University, Kyoto, Japan.,Institute for Protein Dynamics, Kyoto Sangyo University, Kyoto, Japan.,Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Kawaguchi, Japan
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12
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Wang Y, Mambiya M, Li Q, Yang L, Jia H, Han Y, Liu W. RNF213 p.R4810K Polymorphism and the Risk of Moyamoya Disease, Intracranial Major Artery Stenosis/Occlusion, and Quasi-Moyamoya Disease: A Meta-Analysis. J Stroke Cerebrovasc Dis 2018; 27:2259-2270. [PMID: 29752070 DOI: 10.1016/j.jstrokecerebrovasdis.2018.04.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 03/15/2018] [Accepted: 04/11/2018] [Indexed: 10/17/2022] Open
Abstract
BACKGROUND Accumulating studies have reported that there is an association between the Ring finger protein 213 (RNF213) p.R4810K (rs112735431, c.14576G>A) single nucleotide polymorphism and the predisposition of moyamoya disease (MMD), intracranial major artery stenosis/occlusion (ICASO), quasi-moyamoya disease (quasi-MMD), and other vascular diseases. However, to this day, analyses about this association have remained scarce in the literature. We attempted to conduct a meta-analysis to systematically summarize and clarify the issue. METHODS Electronic databases dated up to January 2018 were searched, retrieved, and used. Revman 5.2 software and STATA version 12.0 were used for statistical analysis. The association between RNF213 p.R4810K and MMD, ICASO, and quasi-MMD were assessed by odds ratios and 95% confidence intervals using fixed effects models. Between-study heterogeneity was evaluated by I-squared (I2) statistics and sensitivity analysis was performed by omitting 1 study at a time. A funnel plot and Begg's test were used to assess the potential publication bias. RESULTS The outcomes showed a statistically significant association between RNF213 p.R4810K and MMD, ICASO, and quasi-MMD, especially in the dominant model. Apart from the first 2 diseases, no significant association was identified under the recessive, the homozygote, and the heterozygote models in ICASO. CONCLUSIONS RNF213 p.R4810K was associated with MMD, ICASO, and quasi-MMD in different genetic models. Subgroup analysis indicated highly significantly higher risk in the Japanese patients. However, further well-designed studies with larger sample size and comprehensive data are needed to confirm our findings and provide a profound conclusion.
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Affiliation(s)
- Yue Wang
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China
| | - Michael Mambiya
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China
| | - Qian Li
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China
| | - Luping Yang
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China
| | - He Jia
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China
| | - Yibo Han
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China
| | - Wanyang Liu
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, China.
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13
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Morimoto T, Mineharu Y, Ono K, Nakatochi M, Ichihara S, Kabata R, Takagi Y, Cao Y, Zhao L, Kobayashi H, Harada KH, Takenaka K, Funaki T, Yokota M, Matsubara T, Yamamoto K, Izawa H, Kimura T, Miyamoto S, Koizumi A. Significant association of RNF213 p.R4810K, a moyamoya susceptibility variant, with coronary artery disease. PLoS One 2017; 12:e0175649. [PMID: 28414759 PMCID: PMC5393571 DOI: 10.1371/journal.pone.0175649] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 03/29/2017] [Indexed: 11/18/2022] Open
Abstract
Background The genetic architecture of coronary artery disease has not been fully elucidated, especially in Asian countries. Moyamoya disease is a progressive cerebrovascular disease that is reported to be complicated by coronary artery disease. Because most Japanese patients with moyamoya disease carry the p.R4810K variant of the ring finger 213 gene (RNF213), this may also be a risk factor for coronary artery disease; however, this possibility has never been tested. Methods and results We genotyped the RNF213 p.R4810K variant in 956 coronary artery disease patients and 716 controls and tested the association between p.R4810K and coronary artery disease. We also validated the association in an independent population of 311 coronary artery disease patients and 494 controls. In the replication study, the p.R4810K genotypes were imputed from genome-wide genotyping data based on the 1000 Genomes Project. We used multivariate logistic regression analyses to adjust for well-known risk factors such as dyslipidemia and smoking habits. In the primary study population, the frequency of the minor variant allele was significantly higher in patients with coronary artery disease than in controls (2.04% vs. 0.98%), with an odds ratio of 2.11 (p = 0.017). Under a dominant model, after adjustment for risk factors, the association remained significant, with an odds ratio of 2.90 (95% confidence interval: 1.37–6.61; p = 0.005). In the replication study, the association was significant after adjustment for age and sex (odds ratio = 4.99; 95% confidence interval: 1.16–21.53; p = 0.031), although it did not reach statistical significance when further adjusted for risk factors (odds ratio = 3.82; 95% confidence interval: 0.87–16.77; p = 0.076). Conclusions The RNF213 p.R4810K variant appears to be significantly associated with coronary artery disease in the Japanese population.
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Affiliation(s)
- Takaaki Morimoto
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Health and Environmental Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yohei Mineharu
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
- * E-mail:
| | - Koh Ono
- Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masahiro Nakatochi
- Statistical Analysis Section, Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
| | - Sahoko Ichihara
- Graduate School of Regional Innovation Studies, Mie University, Tsu, Japan
| | - Risako Kabata
- Department of Health and Environmental Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yasushi Takagi
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yang Cao
- Department of Health and Environmental Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Preventive Medicine, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Lanying Zhao
- Congenital Anomaly Research Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hatasu Kobayashi
- Department of Health and Environmental Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kouji H. Harada
- Department of Health and Environmental Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | | | - Takeshi Funaki
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Mitsuhiro Yokota
- Department of Genome Science, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Tatsuaki Matsubara
- Department of Internal Medicine, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Ken Yamamoto
- Department of Medical Biochemistry, Kurume University School of Medicine, Fukuoka, Japan
| | - Hideo Izawa
- Department of Cardiology, Fujita Health University, Banbuntane Hotokukai Hospital, Nagoya, Japan
| | - Takeshi Kimura
- Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Susumu Miyamoto
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Akio Koizumi
- Department of Health and Environmental Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan
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14
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Alternative exon skipping biases substrate preference of the deubiquitylase USP15 for mysterin/RNF213, the moyamoya disease susceptibility factor. Sci Rep 2017; 7:44293. [PMID: 28276505 PMCID: PMC5343593 DOI: 10.1038/srep44293] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 02/06/2017] [Indexed: 01/17/2023] Open
Abstract
The deubiquitylating enzyme USP15 plays significant roles in multiple cellular pathways including TGF-β signaling, RNA splicing, and innate immunity. Evolutionarily conserved skipping of exon 7 occurs during transcription of the mRNAs encoding USP15 and its paralogue USP4, yielding two major isoforms for each gene. Exon 7 of USP15 encodes a serine-rich stretch of 29 amino acid residues located in the inter-region linker that connects the N-terminal putative regulatory region and the C-terminal enzymatic region. Previous findings suggested that the variation in the linker region leads to functional differences between the isoforms of the two deubiquitylating enzymes, but to date no direct evidence regarding such functional divergence has been published. We found that the long isoform of USP15 predominantly recognizes and deubiquitylates mysterin, a large ubiquitin ligase associated with the onset of moyamoya disease. This observation represents the first experimental evidence that the conserved exon skipping alters the substrate specificity of this class of deubiquitylating enzymes. In addition, we found that the interactomes of the short and long isoforms of USP15 only partially overlapped. Thus, USP15, a key gene in multiple cellular processes, generates two functionally different isoforms via evolutionarily conserved exon skipping.
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15
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16
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Syndecan-4 modulates the proliferation of neural cells and the formation of CaP axons during zebrafish embryonic neurogenesis. Sci Rep 2016; 6:25300. [PMID: 27143125 PMCID: PMC4855150 DOI: 10.1038/srep25300] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 04/14/2016] [Indexed: 02/05/2023] Open
Abstract
Syndecan-4 (Syn4), a single-pass transmembrane heparin sulphate proteoglycan (HSPG), plays significant role in the formation of focal adhesions and interacts with many growth factors to regulate cell migration and neural induction. Here, we show the new roles of syndecan-4(syn4) in zebrafish embryonic neurogenesis. Syn4 is broadly and dynamically expressed throughout the early stages of embryonic development. Knockdown of syn4 increases the expression of the marker genes of multiple types of neural cells. The increased expression of the marker genes is resulted from excessive proliferation of the neural cells. In addition, disrupting syn4 expression results in truncated and multiple aberrant branching of caudal primary (CaP) axons. Collectively, these data indicate that Syn4 suppresses the cellular proliferation during neurogenesis and is crucial for the formation of CaP axons during zebrafish embryogenesis.
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