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Yokoi K, Nakajima Y, Sudo Y, Mariya T, Kawamura R, Tsutsumi M, Inagaki H, Yoshikawa T, Ito T, Kurahashi H. Maple syrup urine disease due to a paracentric inversion of chr 19 that disrupts
BCKDHA
: A case report. JIMD Rep 2022; 63:575-580. [PMID: 36341163 PMCID: PMC9626657 DOI: 10.1002/jmd2.12333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 08/28/2022] [Accepted: 08/30/2022] [Indexed: 11/12/2022] Open
Abstract
Maple syrup urine disease (MSUD) is a rare autosomal recessive inherited disorder of branched‐chain amino acid metabolism caused by mutations in BCKDHA, BCKDHB, and DBT that encode the E1α, E1β, and E2 subunits of the branched‐chain α‐ketoacid dehydrogenase (BCKD) complex. Various MSUD‐causing variants have been described; however, no structural rearrangements in BCKDHA have been reported to cause the classic MSUD phenotype. Here, we describe the classic patient with MSUD with compound heterozygous pathogenic variants in BCKDHA: a missense variant (NM_000709.3:c.757G > A, NP_000700.1:p.Ala253Thr) and a paracentric inversion disrupting Intron 1 of BCKDHA, which was identified by whole‐genome sequencing and validated by fluorescence in situ hybridization. Using the sequence information of the breakpoint junction, we gained mechanistic insight into the development of this structural rearrangement. Furthermore, the establishment of junction‐specific polymerase chain reaction could facilitate identification of the variant in case carrier or future prenatal/preimplantation tests are necessary.
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Affiliation(s)
- Katsuyuki Yokoi
- Department of Pediatrics Fujita Health University School of Medicine Toyoake Japan
- Division of Molecular Genetics Institute for Comprehensive Medical Science, Fujita Health University Toyoake Japan
| | - Yoko Nakajima
- Department of Pediatrics Fujita Health University School of Medicine Toyoake Japan
| | - Yuta Sudo
- Department of Pediatrics Fujita Health University School of Medicine Toyoake Japan
| | - Tasuku Mariya
- Department of Obstetrics and Gynecology Sapporo Medical University School of Medicine Sapporo Japan
| | - Rie Kawamura
- Division of Molecular Genetics Institute for Comprehensive Medical Science, Fujita Health University Toyoake Japan
| | - Makiko Tsutsumi
- Division of Molecular Genetics Institute for Comprehensive Medical Science, Fujita Health University Toyoake Japan
| | - Hidehito Inagaki
- Division of Molecular Genetics Institute for Comprehensive Medical Science, Fujita Health University Toyoake Japan
| | - Tetsushi Yoshikawa
- Department of Pediatrics Fujita Health University School of Medicine Toyoake Japan
| | - Tetsuya Ito
- Department of Pediatrics Fujita Health University School of Medicine Toyoake Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics Institute for Comprehensive Medical Science, Fujita Health University Toyoake Japan
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2
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Bonora E, Chakrabarty S, Kellaris G, Tsutsumi M, Bianco F, Bergamini C, Ullah F, Isidori F, Liparulo I, Diquigiovanni C, Masin L, Rizzardi N, Cratere MG, Boschetti E, Papa V, Maresca A, Cenacchi G, Casadio R, Martelli P, Matera I, Ceccherini I, Fato R, Raiola G, Arrigo S, Signa S, Sementa AR, Severino M, Striano P, Fiorillo C, Goto T, Uchino S, Oyazato Y, Nakamura H, Mishra SK, Yeh YS, Kato T, Nozu K, Tanboon J, Morioka I, Nishino I, Toda T, Goto YI, Ohtake A, Kosaki K, Yamaguchi Y, Nonaka I, Iijima K, Mimaki M, Kurahashi H, Raams A, MacInnes A, Alders M, Engelen M, Linthorst G, de Koning T, den Dunnen W, Dijkstra G, van Spaendonck K, van Gent DC, Aronica EM, Picco P, Carelli V, Seri M, Katsanis N, Duijkers FAM, Taniguchi-Ikeda M, De Giorgio R. Biallelic variants in LIG3 cause a novel mitochondrial neurogastrointestinal encephalomyopathy. Brain 2021; 144:1451-1466. [PMID: 33855352 DOI: 10.1093/brain/awab056] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 11/13/2020] [Accepted: 12/09/2020] [Indexed: 12/11/2022] Open
Abstract
Abnormal gut motility is a feature of several mitochondrial encephalomyopathies, and mutations in genes such as TYMP and POLG, have been linked to these rare diseases. The human genome encodes three DNA ligases, of which only one, ligase III (LIG3), has a mitochondrial splice variant and is crucial for mitochondrial health. We investigated the effect of reduced LIG3 activity and resulting mitochondrial dysfunction in seven patients from three independent families, who showed the common occurrence of gut dysmotility and neurological manifestations reminiscent of mitochondrial neurogastrointestinal encephalomyopathy. DNA from these patients was subjected to whole exome sequencing. In all patients, compound heterozygous variants in a new disease gene, LIG3, were identified. All variants were predicted to have a damaging effect on the protein. The LIG3 gene encodes the only mitochondrial DNA (mtDNA) ligase and therefore plays a pivotal role in mtDNA repair and replication. In vitro assays in patient-derived cells showed a decrease in LIG3 protein levels and ligase activity. We demonstrated that the LIG3 gene defects affect mtDNA maintenance, leading to mtDNA depletion without the accumulation of multiple deletions as observed in other mitochondrial disorders. This mitochondrial dysfunction is likely to cause the phenotypes observed in these patients. The most prominent and consistent clinical signs were severe gut dysmotility and neurological abnormalities, including leukoencephalopathy, epilepsy, migraine, stroke-like episodes, and neurogenic bladder. A decrease in the number of myenteric neurons, and increased fibrosis and elastin levels were the most prominent changes in the gut. Cytochrome c oxidase (COX) deficient fibres in skeletal muscle were also observed. Disruption of lig3 in zebrafish reproduced the brain alterations and impaired gut transit in vivo. In conclusion, we identified variants in the LIG3 gene that result in a mitochondrial disease characterized by predominant gut dysmotility, encephalopathy, and neuromuscular abnormalities.
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Affiliation(s)
- Elena Bonora
- Department of Medical and Surgical Sciences, St. Orsola-Malpighi Hospital, University of Bologna, Bologna, 40138, Italy
| | - Sanjiban Chakrabarty
- Department of Molecular Genetics, Erasmus MC, Rotterdam, 3000 CA, The Netherlands
| | - Georgios Kellaris
- Center for Human Disease Modeling, Duke University, Durham, NC 27710, USA
| | - Makiko Tsutsumi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Aichi, 470-1192, Japan
| | - Francesca Bianco
- Department of Medical and Surgical Sciences, St. Orsola-Malpighi Hospital, University of Bologna, Bologna, 40138, Italy
| | - Christian Bergamini
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, 40126, Italy
| | - Farid Ullah
- Center for Human Disease Modeling, Duke University, Durham, NC 27710, USA
| | - Federica Isidori
- Department of Medical and Surgical Sciences, St. Orsola-Malpighi Hospital, University of Bologna, Bologna, 40138, Italy
| | - Irene Liparulo
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, 40126, Italy
| | - Chiara Diquigiovanni
- Department of Medical and Surgical Sciences, St. Orsola-Malpighi Hospital, University of Bologna, Bologna, 40138, Italy
| | - Luca Masin
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, 40126, Italy
| | - Nicola Rizzardi
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, 40126, Italy
| | - Mariapia Giuditta Cratere
- Department of Medical and Surgical Sciences, St. Orsola-Malpighi Hospital, University of Bologna, Bologna, 40138, Italy.,Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milan, 20132, Italy
| | - Elisa Boschetti
- Department of Medical and Surgical Sciences, St. Orsola-Malpighi Hospital, University of Bologna, Bologna, 40138, Italy
| | - Valentina Papa
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, 40123, Italy
| | - Alessandra Maresca
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Programma di Neurogenetica, Bologna, 40139, Italy
| | - Giovanna Cenacchi
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, 40123, Italy
| | - Rita Casadio
- Biocomputing Group, Department of Biological, Geological, Environmental Sciences, University of Bologna, Bologna, 40126, Italy
| | - Pierluigi Martelli
- Biocomputing Group, Department of Biological, Geological, Environmental Sciences, University of Bologna, Bologna, 40126, Italy
| | - Ivana Matera
- IRCCS Istituto Giannina Gaslini, Genova, 16128, Italy
| | | | - Romana Fato
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, 40126, Italy
| | - Giuseppe Raiola
- Department of Paediatrics, Pugliese-Ciaccio Hospital, Catanzaro, 88100, Italy
| | - Serena Arrigo
- IRCCS Istituto Giannina Gaslini, Genova, 16128, Italy
| | - Sara Signa
- IRCCS Istituto Giannina Gaslini, Genova, 16128, Italy
| | | | | | | | | | - Tsuyoshi Goto
- Laboratory of Molecular Function of Food, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, 611-0011, Japan
| | - Shumpei Uchino
- Department of Pediatrics, Teikyo University School of Medicine, Tokyo, 173-8605, Japan.,Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Yoshinobu Oyazato
- Department of Pediatrics, Kakogawa Central City Hospital, Kakogawa, Hyogo, 675-8611, Japan
| | - Hisayoshi Nakamura
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, 187-8502, Japan
| | - Sushil K Mishra
- Glycoscience Group, National University of Ireland, Galway, H91 CF50, Ireland
| | - Yu-Sheng Yeh
- Laboratory of Molecular Function of Food, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, 611-0011, Japan
| | - Takema Kato
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Aichi, 470-1192, Japan
| | - Kandai Nozu
- Department of Pediatrics, Kobe University Graduate School of Medicine, Hyogo, 650-0017, Japan
| | - Jantima Tanboon
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, 187-8502, Japan
| | - Ichiro Morioka
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, 173-8610, Japan
| | - Ichizo Nishino
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, 187-8502, Japan
| | - Tatsushi Toda
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Yu-Ichi Goto
- Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, 187-8502, Japan
| | - Akira Ohtake
- Department of Pediatrics & Clinical Genomics, Faculty of Medicine, Saitama Medical University, Saitama, 350-0495, Japan
| | - Kenjiro Kosaki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, 160-8582, Japan
| | - Yoshiki Yamaguchi
- Laboratory of Pharmaceutical Physical Chemistry, Tohoku Medical and Pharmaceutical University, Miyagi, 981-8558, Japan
| | - Ikuya Nonaka
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, 187-8502, Japan
| | - Kazumoto Iijima
- Department of Pediatrics, Kobe University Graduate School of Medicine, Hyogo, 650-0017, Japan
| | - Masakazu Mimaki
- Department of Pediatrics, Teikyo University School of Medicine, Tokyo, 173-8605, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Aichi, 470-1192, Japan
| | - Anja Raams
- Department of Molecular Genetics, Erasmus MC, Rotterdam, 3000 CA, The Netherlands
| | - Alyson MacInnes
- Department of Metabolic Diseases, Amsterdam UMC, University of Amsterdam, Amsterdam, 1100 DD, The Netherlands
| | - Mariel Alders
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, 1100 DD, The Netherlands
| | - Marc Engelen
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam, 1100 DD, The Netherlands
| | - Gabor Linthorst
- Department of Metabolic Diseases, Amsterdam UMC, University of Amsterdam, Amsterdam, 1100 DD, The Netherlands
| | - Tom de Koning
- Department of Metabolic Diseases, UMCG, Groningen, 9700 RB, The Netherlands
| | | | - Gerard Dijkstra
- Department of Gastroenterology, UMCG, Groningen, 9700 RB, The Netherlands
| | - Karin van Spaendonck
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, 1100 DD, The Netherlands
| | - Dik C van Gent
- Department of Molecular Genetics, Erasmus MC, Rotterdam, 3000 CA, The Netherlands
| | - Eleonora M Aronica
- Department of Pathology, Amsterdam UMC, University of Amsterdam, Amsterdam, 1100 DD, The Netherlands
| | - Paolo Picco
- IRCCS Istituto Giannina Gaslini, Genova, 16128, Italy
| | - Valerio Carelli
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, 40123, Italy.,IRCCS Istituto delle Scienze Neurologiche di Bologna, Programma di Neurogenetica, Bologna, 40139, Italy
| | - Marco Seri
- Department of Medical and Surgical Sciences, St. Orsola-Malpighi Hospital, University of Bologna, Bologna, 40138, Italy
| | - Nicholas Katsanis
- Center for Human Disease Modeling, Duke University, Durham, NC 27710, USA
| | - Floor A M Duijkers
- Department of Clinical Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, 1100 DD, The Netherlands
| | - Mariko Taniguchi-Ikeda
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Aichi, 470-1192, Japan.,Department of Pediatrics, Kobe University Graduate School of Medicine, Hyogo, 650-0017, Japan.,Department of Clinical Genetics, Fujita Health University Hospital, Aichi, 470-1192, Japan
| | - Roberto De Giorgio
- Department of Morphology, Surgery and Experimental Medicine, St. Anna Hospital, University of Ferrara, Ferrara, 44124, Italy
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3
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Tsutsumi M, Miura H, Inagaki H, Shinkai Y, Kato A, Kato T, Hamada-Tsutsumi S, Tanaka M, Kudo K, Yoshikawa T, Kurahashi H. An aggressive systemic mastocytosis preceded by ovarian dysgerminoma. BMC Cancer 2020; 20:1162. [PMID: 33246418 PMCID: PMC7693501 DOI: 10.1186/s12885-020-07653-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 11/17/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Aggressive systemic mastocytosis (ASM) is a rare malignant disease characterized by disordered mast cell accumulation in various organs. We here describe a female ASM patient with a previous history of ovarian dysgerminoma. METHODS Molecular cytogenomic analyses were performed to elucidate an etiological link between the ASM and dysgerminoma of the patient. RESULTS This patient was affected by ovarian dysgerminoma which was treated by chemotherapy and surgical resection. Having subsequently been in complete remission for 2 years, she developed symptoms of ASM. A somatic D816A mutation in the KIT gene was detected in her bone marrow, which facilitated the diagnosis of ASM. Unexpectedly, this KIT D816A variant was also detected in the prior ovarian dysgerminoma sample. Whole-exome sequencing allowed us to identify a somatic nonsense mutation of the TP53 gene in the bone marrow, but not in the dysgerminoma. Microarray analysis of the patient's bone marrow revealed a copy-number-neutral loss of heterozygosity at the TP53 locus, suggestive of the homozygous nonsense mutation in the TP53 gene. In addition, the loss of heterozygosity at the TP53 locus was also detected in the dysgerminoma. CONCLUSIONS These results indicated that either the mast cells causing the ASM in this case had originated from the preceding ovarian dysgerminoma as a clonal evolution of a residual tumor cell, which acquired the TP53 mutation, or that both tumors developed from a common cancer stem cell carrying the KIT D816A variation.
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Affiliation(s)
- Makiko Tsutsumi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Hiroki Miura
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hidehito Inagaki
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Yasuko Shinkai
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Asuka Kato
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
- ITOCHU Collaborative Research-Molecular Targeted Cancer Treatment for Next Generation, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Takema Kato
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Susumu Hamada-Tsutsumi
- Department of Virology and Liver Unit, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Makito Tanaka
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Kazuko Kudo
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Tetsushi Yoshikawa
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
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4
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Mori S, Ito Y, Kishida T, Fukagawa T, Nakano T, Makino K, Mizusawa M, Shirai S, Honda Y, Tsutsumi M, Sakamoto Y, Kobayashi N, Araki M, Yamawaki M, Hirano K. Occurrence and clinical course of peri-stent contrast staining: comparison between second-generation drug-eluting stents and third generation drug-eluting stents. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Peri-stent contrast staining (PSS) has been reported to be associated with very late stent thrombosis.
The aims of this study was to compare the occurrence rate of PSS between second generation drug-eluting stents (2nd DES) and third generation drug-eluting stents (3rd DES), and to identify clinical characteristics associated with PSS.
Methods and results
This study comprised 1899 patients with 2493 de novo lesions treated with 2nd or 3rd DES from October 2015 to September 2018. Follow-up angiography was available for 1883 lesions (75.5%). There were 725 patients with 968 lesions treated with 2nd DES, and 716 patients with 915 lesions treated with 3rd DES. The occurrence of PSS, types of PSS, and VLST related to PSS were compared between 2nd and 3rd DES implantation. Mean follow-up period was 30±12 months. The occurrence rate of PSS and segmental type of PSS were similar between two groups (2nd DES vs. 3rd DES, 1.5% vs. 1.7%, p=0.73, 47% vs. 50%, p=0.85, and respectively). The VLST related to PSS occurred in only one case in 3rd DES group. (0% vs. 6.3%, p=0.33).
Conclusion
The occurrence rate of PSS and clinical course were similar between 2nd and 3rd DES.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- S Mori
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - Y Ito
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - T Kishida
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - T Fukagawa
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - T Nakano
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - K Makino
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - M Mizusawa
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - S Shirai
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - Y Honda
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - M Tsutsumi
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - Y Sakamoto
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - N Kobayashi
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - M Araki
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - M Yamawaki
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
| | - K Hirano
- Saiseikai Yokohama City Eastern Hospital, Cardiology, Yokohama, Japan
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5
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Kawai M, Kato T, Tsutsumi M, Shinkai Y, Inagaki H, Kurahashi H. Molecular analysis of low-level mosaicism of the IKBKG mutation using the X Chromosome Inactivation pattern in Incontinentia Pigmenti. Mol Genet Genomic Med 2020; 8:e1531. [PMID: 33085210 PMCID: PMC7767561 DOI: 10.1002/mgg3.1531] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 09/04/2020] [Accepted: 09/14/2020] [Indexed: 02/06/2023] Open
Abstract
Background Incontinentia pigmenti (IP) is a rare X‐linked disorder affecting the skin and other ectodermal tissues that is caused by mutation of the IKBKG/NEMO gene. Previous studies have reported that the overall mutation detection rate in IP is ~75%. We hypothesized that a low‐level mosaicism existed in the remaining cases. Methods Genomic variations in the IKBKG gene were examined in 30 IP probands and their family members. Standard mutational analyses were performed to detect common deletions, nucleotide alterations, and copy number variations. To assess skewing of the X chromosome inactivation (XCI) pattern, a HUMARA assay was performed. We compared the results of this analysis with phenotype severity. Results Pathogenic variants were identified in 20 probands (66.7%), the rate of detection was suboptimal. The remaining 10 probands tended to manifest a mild phenotype with no skewed X chromosome inactivation that is generally observed in IP patients. Quantitative nested PCR and digital droplet PCR were performed for the 10 patients and mosaicism of the common IKBKG deletion were identified in five patients. Conclusion Overall, we detected 25 IKBKG mutations (83.3%). Determination of the XCI value in advance of mutational analyses for IP could improve the mutation detection rate. Our improved detection rate for these mutations, particularly those with a low‐level mosaicism, may present opportunities for appropriate genetic counseling.
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Affiliation(s)
- Miki Kawai
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan.,Department of Clinical Genetics, Fujita Health University Hospital, Toyoake, Japan
| | - Takema Kato
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Makiko Tsutsumi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Yasuko Shinkai
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Hidehito Inagaki
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan.,Department of Clinical Genetics, Fujita Health University Hospital, Toyoake, Japan
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6
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Kato T, Kawai M, Miyai S, Suzuki F, Tsutsumi M, Mizuno S, Ikeda T, Kurahashi H. Analysis of the Origin of Double Mosaic Aneuploidy in Two Cases. Cytogenet Genome Res 2020; 160:118-123. [PMID: 32248198 DOI: 10.1159/000507177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2020] [Indexed: 11/19/2022] Open
Abstract
We present 2 cases of double mosaic aneuploidy harboring 2 or more different aneuploid cell lines, but no line with a normal chromosome constitution. One of these cases presented mosaicism of sex chromosome aneuploid cell lines (47,XXX/45,X) along with another line containing an autosomal trisomy (47,XX,+8), while the other case showed mosaicism of 2 different autosomal trisomy cell lines (47,XY,+5 and 47,XY,+8). To elucidate the mechanisms underlying these mosaicisms, we conducted molecular cytogenetic analyses. Genotyping data from the SNP microarray indicated that 2 sequential meiotic or early postzygotic segregation errors likely had occurred followed by natural selection. These cases suggest that frequent segregation errors and selection events in the meiotic and early postzygotic stages lead to this condition.
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7
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Tsutsumi M, Hattori H, Akita N, Maeda N, Kubota T, Horibe K, Fujita N, Kawai M, Shinkai Y, Kato M, Kato T, Kawamura R, Suzuki F, Kurahashi H. A female patient with retinoblastoma and severe intellectual disability carrying an X;13 balanced translocation without rearrangement in the RB1 gene: a case report. BMC Med Genomics 2019; 12:182. [PMID: 31806026 PMCID: PMC6896736 DOI: 10.1186/s12920-019-0640-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 11/29/2019] [Indexed: 12/02/2022] Open
Abstract
Background Female carriers of a balanced X; autosome translocation generally undergo selective inactivation of the normal X chromosome. This is because inactivation of critical genes within the autosomal region of the derivative translocation chromosome would compromise cellular function. We here report a female patient with bilateral retinoblastoma and a severe intellectual disability who carries a reciprocal X-autosomal translocation. Case presentation Cytogenetic and molecular analyses, a HUMARA (Human androgen receptor) assay, and methylation specific PCR (MSP) and bisulfite sequencing were performed using peripheral blood samples from the patient. The patient’s karyotype was 46,X,t(X;13)(q28;q14.1) by G-banding analysis. Further cytogenetic analysis located the entire RB1 gene and its regulatory region on der(X) with no translocation disruption. The X-inactivation pattern in the peripheral blood was highly skewed but not completely selected. MSP and deep sequencing of bisulfite-treated DNA revealed that an extensive 13q region, including the RB1 promoter, was unusually methylated in a subset of cells. Conclusions The der(X) region harboring the RB1 gene was inactivated in a subset of somatic cells, including the retinal cells, in the patient subject which acted as the first hit in the development of her retinoblastoma. In addition, the patient’s intellectual disability may be attributable to the inactivation of the der(X), leading to a 13q deletion syndrome-like phenotype, or to an active X-linked gene on der (13) leading to Xq28 functional disomy.
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Affiliation(s)
- Makiko Tsutsumi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Hiroyoshi Hattori
- Department of Clinical Genetics, National Hospital Organization, Nagoya Medical Center, Nagoya, Japan.,Department of Pediatrics, National Hospital Organization, Nagoya Medical Center, Nagoya, Japan
| | - Nobuhiro Akita
- Department of Pediatrics, National Hospital Organization, Nagoya Medical Center, Nagoya, Japan
| | - Naoko Maeda
- Department of Pediatrics, National Hospital Organization, Nagoya Medical Center, Nagoya, Japan
| | - Toshinobu Kubota
- Department of Ophthalmology, National Hospital Organization, Nagoya Medical Center, Nagoya, Japan
| | - Keizo Horibe
- Department of Pediatrics, National Hospital Organization, Nagoya Medical Center, Nagoya, Japan
| | - Naoko Fujita
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.,Genome and Transcriptome Analysis Center, Fujita Health University, Toyoake, Japan
| | - Miki Kawai
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Yasuko Shinkai
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Maki Kato
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Takema Kato
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Rie Kawamura
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Fumihiko Suzuki
- Center for Collaboration in Research and Education, Fujita Health University, Toyoake, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
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8
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Hayano S, Okuno Y, Tsutsumi M, Inagaki H, Fukasawa Y, Kurahashi H, Kojima S, Takahashi Y, Kato T. Corrigendum to "Frequent intragenic microdeletions of elastin in familial supravalvular aortic stenosis." [Int. J. Cardiol., 274 (2019) 290-295]. Int J Cardiol 2019; 292:283. [PMID: 31256992 DOI: 10.1016/j.ijcard.2019.06.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Satoshi Hayano
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Yusuke Okuno
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Makiko Tsutsumi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Japan
| | - Hidehito Inagaki
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Japan
| | - Yoshie Fukasawa
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Japan
| | - Seiji Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Yoshiyuki Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Taichi Kato
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan.
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9
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Toshikuni N, Matsue Y, Minato T, Hayashi N, Tsutsumi M. Association between transforming growth factor-β1 -509 C>T variants and hepatocellular carcinoma susceptibility: a meta-analysis. Neoplasma 2019; 63:961-966. [PMID: 27596296 DOI: 10.4149/neo_2016_615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The transcriptional activity of transforming growth factor-β (TGF-β) is increased in subjects with hepatocellular carcinoma (HCC). Recent studies have indicated that the -509C genotype in hepatitis B virus (HBV)-infected subjects and the -509T genotype in hepatitis C virus (HCV)-infected subjects can increase the transcriptional activity of the TGF-β1 gene. We conducted a meta-analysis to clarify whether these two hepatitis viruses affect the association between TGF-β1 C-509T variants and HCC susceptibility. Using data derived from 8 case-control studies available in the PubMed database (5 with Asian and 3 with Caucasian populations), including 1,427 cases and 3,735 controls [1,610 patients with chronic liver disease and 2,125 healthy controls], we calculated pooled odds ratios with corresponding 95% confidence intervals. We used dominant (TT + CT vs. CC), recessive (TT vs. CC + CT), and co-dominant (TT vs. CC and CT vs. CC) genetic models. An overall analysis showed no association between the TGF-β1 C-509T variants and HCC susceptibility for all models. In contrast, a subgroup analysis, based on the infecting hepatitis viruses, provided the following results. Among the cases and controls with chronic liver disease, the TGF-β1 C-509T variants were significantly associated with decreased HCC susceptibility for two models with HBV-infected subjects, whereas the variants were significantly associated with increased HCC susceptibility for one model with HCV-infected subjects. Among the cases and healthy controls, there was a significant association between the TGF-β1 C-509T variants and increased HCC susceptibility for two models involving HCV-infected subjects. Among the cases and the entire control group, the same results were obtained for all genetic models with HCV-infected subjects. Although further data accumulation is required, our results suggest that these two hepatitis viruses affect the association between TGF-β1 C-509T variants and HCC susceptibility in opposite manners.
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10
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Yokoi K, Nakajima Y, Inagaki H, Tsutsumi M, Ito T, Kurahashi H. Exonic duplication of the OTC gene by a complex rearrangement that likely occurred via a replication-based mechanism: a case report. BMC Med Genet 2018; 19:210. [PMID: 30541480 PMCID: PMC6292170 DOI: 10.1186/s12881-018-0733-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 12/03/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND Ornithine transcarbamylase deficiency (OTCD) is an X-linked recessive disorder involving a defect in the urea cycle caused by OTC gene mutations. Although a total of 417 disease-causing mutations in OTC have been reported, structural abnormalities in this gene are rare. We here describe a female OTCD case caused by an exonic duplication of the OTC gene (exons 1-6). CASE PRESENTATION A 23-year-old woman with late-onset OTCD diagnosed by biochemical testing was subjected to subsequent genetic testing. Sanger sequencing revealed no pathogenic mutation throughout the coding exons of the OTC gene, but multiplex ligation-dependent probe amplification (MLPA) revealed duplication of exons 1-6. Further genetic analyses revealed an inversion of duplicated exon 1 and a tandem duplication of exons 2-6. Each of the junctions of the inversion harbored a microhomology and non-templated microinsertion, respectively, suggesting a replication-based mechanism. The duplication was also of de novo origin but segregation analysis indicated that it took place in the paternal chromosome. CONCLUSION We report the first OTCD case harboring an exonic duplication in the OTC gene. The functional defects caused by this anomaly were determined via structural analysis of its complex rearrangements.
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Affiliation(s)
- Katsuyuki Yokoi
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan.,Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Yoko Nakajima
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hidehito Inagaki
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Makiko Tsutsumi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
| | - Tetsuya Ito
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
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11
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Ito M, Nishizawa H, Tsutsumi M, Kato A, Sakabe Y, Noda Y, Ohwaki A, Miyazaki J, Kato T, Shiogama K, Sekiya T, Kurahashi H, Fujii T. Potential role for nectin-4 in the pathogenesis of pre-eclampsia: a molecular genetic study. BMC Med Genet 2018; 19:166. [PMID: 30217189 PMCID: PMC6137934 DOI: 10.1186/s12881-018-0681-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 09/04/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND Nectins are cell adhesion molecules that play a pivotal role in adherens junctions and tight junctions. Our previous study using whole-genome oligonucleotide microarrays revealed that nectin-4 was upregulated in pre-eclamptic placentas. We investigated the role of nectin-4 in the etiology of pre-eclampsia. METHODS We investigated the expression of nectin-4 using real-time RT-PCR, western blot and immunostaining. Additionally, we performed matrigel invasion assay and cytotoxicity assay using cells overexpressing the nectin-4. RESULTS NECTIN4 transcripts were elevated in pre-eclamptic placentas relative to uncomplicated pregnancies. Nectin-4 protein levels in pre-eclamptic placentas were higher on a semi-quantitative western blot. Nectin-4 was localized at the apical cell membrane in syncytiotrophoblast cells and not at the adherens junctions. Nectin-4 was also detected in cytotrophoblasts and a subset of cells in the decidua. Nectin-4 overexpressing trophoblast cells migrated normally in the matrix. However, Natural killer (NK) cells showed a strong cytotoxic effect against nectin-4 overexpressing trophoblast cells. No causative genetic variation was evident in the NECTIN4 gene from a pre-eclamptic placenta. CONCLUSIONS There are as yet unknown factors that induce nectin-4 overexpression in trophoblast cells that may contribute to abnormal placentation via an aberrant immune response and the onset of a pre-eclamptic pregnancy.
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Grants
- Ogyaa Donation Foundation from the Japan Association of Obstetricians and Gynecologists
- grants-in-aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology, Japan
- grants-in-aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology, Japan
- Ministry of Health, Labour and Welfare, Japan
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Affiliation(s)
- Mayuko Ito
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192 Japan
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Haruki Nishizawa
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192 Japan
| | - Makiko Tsutsumi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Asuka Kato
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192 Japan
| | - Yoshiko Sakabe
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192 Japan
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Yoshiteru Noda
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192 Japan
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Akiko Ohwaki
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192 Japan
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Jun Miyazaki
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192 Japan
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Takema Kato
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Kazuya Shiogama
- Division of Morphology and Cell Function, Faculty of Medical Technology, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Takao Sekiya
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192 Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Takuma Fujii
- Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192 Japan
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12
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Hayano S, Okuno Y, Tsutsumi M, Inagaki H, Fukasawa Y, Kurahashi H, Kojima S, Takahashi Y, Kato T. Frequent intragenic microdeletions of elastin in familial supravalvular aortic stenosis. Int J Cardiol 2018; 274:290-295. [PMID: 30228022 DOI: 10.1016/j.ijcard.2018.09.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 09/01/2018] [Accepted: 09/07/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND Supravalvular aortic stenosis (SVAS) is a congenital heart disease affecting approximately 1:25,000 live births. SVAS may occur sporadically, be inherited in an autosomal dominant manner, or be associated with Williams-Beuren syndrome, a complex developmental disorder caused by a microdeletion of chromosome 7q11.23. ELN on 7q11.23, which encodes elastin, is the only known gene to be recurrently mutated in less than half of SVAS patients. METHODS Whole-exome sequencing (WES) was performed for seven familial SVAS families to identify other causative gene mutations of SVAS. RESULTS Three truncating mutations and three intragenic deletions affecting ELN were identified, yielding a diagnostic efficiency of 6/7 (85%). The deletions, which explained 3/7 of the present cohort, spanned 1-29 exons, which might be missed in the course of mutational analysis targeting point mutations. The presence of such deletions was validated by both WES-based copy number estimation and multiplex ligation-dependent probe amplification analyses, and their pathogenicity was reinforced by co-segregation with clinical presentations. CONCLUSIONS The majority of familial SVAS patients appear to carry ELN mutations, which strongly indicates that elastin is the most important causative gene for SVAS. The frequency of intragenic deletions highlights the need for quantitative tests to analyze ELN for efficient genetic diagnosis of SVAS.
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Affiliation(s)
- Satoshi Hayano
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan.
| | - Yusuke Okuno
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan.
| | - Makiko Tsutsumi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Japan.
| | - Hidehito Inagaki
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Japan.
| | - Yoshie Fukasawa
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan.
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Japan.
| | - Seiji Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan.
| | - Yoshiyuki Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan.
| | - Taichi Kato
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan.
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13
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Tsutsumi M, Fujita N, Suzuki F, Mishima T, Fujieda S, Watari M, Takahashi N, Tonoki H, Moriwaka O, Endo T, Kurahashi H. A constitutional jumping translocation involving the Y and acrocentric chromosomes. Asian J Androl 2018; 21:239271. [PMID: 30147084 PMCID: PMC6337947 DOI: 10.4103/aja.aja_60_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 06/20/2018] [Indexed: 11/04/2022] Open
Affiliation(s)
- Makiko Tsutsumi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake 470-1192, Japan
| | - Naoko Fujita
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake 470-1192, Japan
- Genome and Transcriptome Analysis Center, Fujita Health University, Toyoake 470-1192, Japan
| | - Fumihiko Suzuki
- Center for Collaboration in Research and Education, Fujita Health University, Toyoake 470-1192, Japan
| | - Takashi Mishima
- Department of Obstetrics and Gynecology, Tenshi Hospital, Sapporo 065-8611, Japan
| | - Satoko Fujieda
- Department of Obstetrics and Gynecology, Tenshi Hospital, Sapporo 065-8611, Japan
| | - Michiko Watari
- Department of Obstetrics and Gynecology, Tenshi Hospital, Sapporo 065-8611, Japan
| | | | - Hidefumi Tonoki
- Department of Pediatrics, Tenshi Hospital, Sapporo 065-8611, Japan
| | | | - Toshiaki Endo
- Department of Obstetrics and Gynecology, Sapporo Medical University, Sapporo 060-8556, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake 470-1192, Japan
- Genome and Transcriptome Analysis Center, Fujita Health University, Toyoake 470-1192, Japan
- Center for Collaboration in Research and Education, Fujita Health University, Toyoake 470-1192, Japan
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14
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Makino K, Ito Y, Hirano K, Yamawaki M, Araki M, Kobayashi N, Mori S, Sakamoto Y, Tsutsumi M, Honda Y, Tokuda T, Shigemitsu S. P3570Impact of nutritional status on clinical outcomes in critical limb ischemia with tissue loss after endovascular treatment. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K Makino
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - Y Ito
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - K Hirano
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - M Yamawaki
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - M Araki
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - N Kobayashi
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - S Mori
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - Y Sakamoto
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - M Tsutsumi
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - Y Honda
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - T Tokuda
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - S Shigemitsu
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
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15
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Kobayashi N, Ito Y, Hirano K, Yamawaki M, Araki M, Sakai T, Sakamoto Y, Mori S, Tsutsumi M, Nauchi M, Honda Y, Makino K, Shirai S. P2630Comparison of tissue characteristics in restenosis lesion between bioabsorbable polymer drug-eluting stent and durable polymer drug-eluting stent. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- N Kobayashi
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - Y Ito
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - K Hirano
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - M Yamawaki
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - M Araki
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - T Sakai
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - Y Sakamoto
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - S Mori
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - M Tsutsumi
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - M Nauchi
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - Y Honda
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - K Makino
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
| | - S Shirai
- Saiseikai Yokohama City Eastern Hospital, Yokohama, Japan
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16
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Tsutsumi M, Ito Y, Hirano K, Yamawaki M, Araki M, Kobayashi N, Mori S, Sakamoto Y, Honda Y, Tokuda T, Makino K, Shirai S. P791Comparison between a novel bioabsorbable polymer everolimus-eluting stent and a durable polymer everolimus-eluting stent. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Tsutsumi
- Saiseikai Yokohama City Eastern Hospital, Department of Cardiology, Yokohama, Japan
| | - Y Ito
- Saiseikai Yokohama City Eastern Hospital, Department of Cardiology, Yokohama, Japan
| | - K Hirano
- Saiseikai Yokohama City Eastern Hospital, Department of Cardiology, Yokohama, Japan
| | - M Yamawaki
- Saiseikai Yokohama City Eastern Hospital, Department of Cardiology, Yokohama, Japan
| | - M Araki
- Saiseikai Yokohama City Eastern Hospital, Department of Cardiology, Yokohama, Japan
| | - N Kobayashi
- Saiseikai Yokohama City Eastern Hospital, Department of Cardiology, Yokohama, Japan
| | - S Mori
- Saiseikai Yokohama City Eastern Hospital, Department of Cardiology, Yokohama, Japan
| | - Y Sakamoto
- Saiseikai Yokohama City Eastern Hospital, Department of Cardiology, Yokohama, Japan
| | - Y Honda
- Saiseikai Yokohama City Eastern Hospital, Department of Cardiology, Yokohama, Japan
| | - T Tokuda
- Saiseikai Yokohama City Eastern Hospital, Department of Cardiology, Yokohama, Japan
| | - K Makino
- Saiseikai Yokohama City Eastern Hospital, Department of Cardiology, Yokohama, Japan
| | - S Shirai
- Saiseikai Yokohama City Eastern Hospital, Department of Cardiology, Yokohama, Japan
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17
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Kawai M, Tsutsumi M, Suzuki F, Sameshima K, Dowa Y, Kyoya T, Inagaki H, Kurahashi H. Two siblings with 11qter deletion syndrome that had been rescued in their mother by uniparental disomy. Eur J Med Genet 2018; 62:224-228. [PMID: 30031150 DOI: 10.1016/j.ejmg.2018.07.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 06/12/2018] [Accepted: 07/17/2018] [Indexed: 10/28/2022]
Abstract
Jacobsen syndrome refers to a congenital anomaly caused by deletion at 11q23.3-qter. We here describe two siblings with the same 11q23.3-qter deletion. Both parents were healthy with a normal karyotype. Cytogenetic microarray analysis revealed no mosaicism in either parent but the mother showed uniparental disomy encompassing the deleted region found in the two siblings. The pattern of X chromosome inactivation was almost completely skewed in the mother. These data suggested that the mother was a carrier of the 11q23.3-qter deletion but that this had been rescued by disomy formation during early embryogenesis except for her germinal cells.
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Affiliation(s)
- Miki Kawai
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Makiko Tsutsumi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Fumihiko Suzuki
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan; Center for Collaboration in Research and Education, Fujita Health University, Toyoake, Japan
| | - Kiyoko Sameshima
- Department of Pediatrics, Minamikyushu National Hospital, Aira, Japan
| | - Yuri Dowa
- Department of Neurology, Gunma Children's Medical Center, Shibukawa, Japan
| | - Takuji Kyoya
- Department of Obstetrics, Gunma Children's Medical Center, Shibukawa, Japan
| | - Hidehito Inagaki
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan; Genome and Transcriptome Analysis Center, Fujita Health University, Toyoake, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan; Center for Collaboration in Research and Education, Fujita Health University, Toyoake, Japan; Genome and Transcriptome Analysis Center, Fujita Health University, Toyoake, Japan.
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18
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Katakami N, Harada T, Murata T, Shinozaki K, Tsutsumi M, Yokota T, Arai M, Tada Y, Narabayashi M, Boku N. Randomized phase III and extension studies: efficacy and impacts on quality of life of naldemedine in subjects with opioid-induced constipation and cancer. Ann Oncol 2018; 29:1461-1467. [PMID: 32151367 PMCID: PMC6005145 DOI: 10.1093/annonc/mdy118] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The efficacy and safety of naldemedine (a peripherally acting µ-opioid receptor antagonist) for opioid-induced constipation (OIC) in subjects with cancer was demonstrated in the primary report of a phase III, double-blind study (COMPOSE-4) and its open-label extension (COMPOSE-5). The primary end point, the proportion of spontaneous bowel movement (SBM) responders, was met. Here, we report results from secondary end points, including quality of life (QOL) assessments from these studies. PATIENTS AND METHODS In COMPOSE-4, eligible adults with OIC and cancer were randomly assigned 1:1 to receive once-daily oral naldemedine 0.2 mg (n = 97) or placebo (n = 96) for 2 weeks, and those who continued on to COMPOSE-5 received naldemedine for 12 weeks (n = 131). Secondary assessments in COMPOSE-4 included the proportion of complete SBM (CSBM) responders, SBM or CSBM responders by week, and subjects with ≥1 SBM or CSBM within 24 h postinitial dose. Changes from baseline in the frequency of SBMs or CSBMs per week were assessed at weeks 1 and 2. Time to the first SBM or CSBM postinitial dose was also evaluated. In both studies, QOL impact was evaluated by Patient Assessment of Constipation-Symptoms (PAC-SYM) and PAC-QOL questionnaires. RESULTS Naldemedine improved bowel function for all secondary efficacy assessments versus placebo (all P ≤ 0.0002). The timely onset of naldemedine activity versus placebo was evidenced by median time to the first SBM (4.7 h versus 26.6 h) and CSBM (24.0 h versus 218.5 h) postinitial dose (all P < 0.0001). In COMPOSE-4, significant differences between groups were observed with the PAC-SYM stool domain (P = 0.045) and PAC-QOL dissatisfaction domain (P = 0.015). In COMPOSE-5, significant improvements from baseline were observed for overall and individual domain scores of PAC-SYM and PAC-QOL. CONCLUSIONS Naldemedine provided effective and timely symptomatic relief from OIC and improved the QOL of subjects with OIC and cancer. TRIAL REGISTRATION ID: www.ClinicalTrials.jp: JAPIC-CTI-132340 (COMPOSE-4) and JAPIC-CTI-132342 (COMPOSE-5).
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Affiliation(s)
- N Katakami
- Kobe City Medical Center General Hospital, Kobe, Japan.
| | - T Harada
- Center for Respiratory Diseases, JCHO Hokkaido Hospital, Sapporo, Japan
| | - T Murata
- Department of Breast Oncology, Aichi Cancer Center Aichi Hospital, Okazaki, Japan
| | - K Shinozaki
- Department of Clinical Oncology, Hiroshima Prefectural Hospital, Hiroshima, Japan
| | - M Tsutsumi
- Department of Urology, Hitachi General Hospital, Hitachi, Japan
| | - T Yokota
- Global Development, Shionogi & Co., Ltd, Osaka, Japan
| | - M Arai
- Global Development, Shionogi & Co., Ltd, Osaka, Japan
| | - Y Tada
- Global Development, Shionogi & Co., Ltd, Osaka, Japan
| | - M Narabayashi
- Department of Palliative Therapy, Cancer Institute Hospital of JFCR, Tokyo, Japan
| | - N Boku
- Division of Gastrointestinal Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
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19
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Tsutsumi M, Ito Y, Hirano K, Yamawaki M, Araki M, Kobayashi N, Sakamoto Y, Mori S, Takama T, Honda Y, Tokuda T, Makino K, Shirai S. P5188Long-term clinical outcomes after polymer-free paclitaxel-coated stent implantation for femoropopliteal disease in comparison with bare metal stent. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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20
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Makino K, Hirano K, Yamawaki M, Araki M, Kobayashi N, Mori S, Sakamoto Y, Tsutsumi M, Takama T, Honda Y, Takahiro T, Shirai S, Ito Y. P5202The effectiveness of ultrasound-guided tibial artery endovascular interventions for chronic total occlusion lesions in critical limb ischemia. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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21
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Kobayashi N, Hirano K, Yamawaki M, Araki M, Sakamoto Y, Mori S, Tsutsumi M, Honda Y, Tokuda T, Makino K, Shirai S, Ito Y. P5215Severity of angiographic dissection and future restenosis after balloon angioplasty for femoropopliteal disease. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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22
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Murata T, Katakami N, Harada T, Shinozaki K, Tsutsumi M, Yokota T, Arai M, Suzuki Y, Narabayashi M, Boku N. Treatment of opioid-induced constipation with naldemedine in patients with cancer: onset of action in a randomized phase 3 trial. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw390.34] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Inagaki H, Kato T, Tsutsumi M, Ouchi Y, Ohye T, Kurahashi H. Palindrome-Mediated Translocations in Humans: A New Mechanistic Model for Gross Chromosomal Rearrangements. Front Genet 2016; 7:125. [PMID: 27462347 PMCID: PMC4940405 DOI: 10.3389/fgene.2016.00125] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 06/28/2016] [Indexed: 11/13/2022] Open
Abstract
Palindromic DNA sequences, which can form secondary structures, are widely distributed in the human genome. Although the nature of the secondary structure-single-stranded "hairpin" or double-stranded "cruciform"-has been extensively investigated in vitro, the existence of such unusual non-B DNA in vivo remains controversial. Here, we review palindrome-mediated gross chromosomal rearrangements possibly induced by non-B DNA in humans. Recent advances in next-generation sequencing have not yet overcome the difficulty of palindromic sequence analysis. However, a dozen palindromic AT-rich repeat (PATRR) sequences have been identified at the breakpoints of recurrent or non-recurrent chromosomal translocations in humans. The breakages always occur at the center of the palindrome. Analyses of polymorphisms within the palindromes indicate that the symmetry and length of the palindrome affect the frequency of the de novo occurrence of these palindrome-mediated translocations, suggesting the involvement of non-B DNA. Indeed, experiments using a plasmid-based model system showed that the formation of non-B DNA is likely the key to palindrome-mediated genomic rearrangements. Some evidence implies a new mechanism that cruciform DNAs may come close together first in nucleus and illegitimately joined. Analysis of PATRR-mediated translocations in humans will provide further understanding of gross chromosomal rearrangements in many organisms.
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Affiliation(s)
- Hidehito Inagaki
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health UniversityToyoake, Japan; Genome and Transcriptome Analysis Center, Fujita Health UniversityToyoake, Japan
| | - Takema Kato
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University Toyoake, Japan
| | - Makiko Tsutsumi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University Toyoake, Japan
| | - Yuya Ouchi
- Genome and Transcriptome Analysis Center, Fujita Health University Toyoake, Japan
| | - Tamae Ohye
- Department of Molecular Laboratory Medicine, Faculty of Medical Technology, School of Health Science, Fujita Health University Toyoake, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health UniversityToyoake, Japan; Genome and Transcriptome Analysis Center, Fujita Health UniversityToyoake, Japan
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24
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Tsutsumi M, Kitahata H, Fukuda M, Kumamoto J, Goto M, Denda S, Yamasaki K, Aiba S, Nagayama M, Denda M. Numerical and comparative three‐dimensional structural analysis of peripheral nerve fibres in epidermis of patients with atopic dermatitis. Br J Dermatol 2015; 174:191-4. [DOI: 10.1111/bjd.13974] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Tsutsumi
- Japan Science and Technology Agency, CREST Kawaguchi Japan
- Shiseido Research Center 2‐2‐1 Hayabuchi Tsuzuki‐ku Yokohama 224‐8558 Japan
| | - H. Kitahata
- Japan Science and Technology Agency, CREST Kawaguchi Japan
- Department of Physics Graduate School of Science Chiba University Chiba Japan
| | - M. Fukuda
- Shiseido Research Center 2‐2‐1 Hayabuchi Tsuzuki‐ku Yokohama 224‐8558 Japan
| | - J. Kumamoto
- Japan Science and Technology Agency, CREST Kawaguchi Japan
- Research Institute for Electronic Science Hokkaido University Sapporo Japan
| | - M. Goto
- Japan Science and Technology Agency, CREST Kawaguchi Japan
- Shiseido Research Center 2‐2‐1 Hayabuchi Tsuzuki‐ku Yokohama 224‐8558 Japan
| | - S. Denda
- Japan Science and Technology Agency, CREST Kawaguchi Japan
- Shiseido Research Center 2‐2‐1 Hayabuchi Tsuzuki‐ku Yokohama 224‐8558 Japan
| | - K. Yamasaki
- Department of Dermatology Tohoku University Graduate School of Medicine Sendai Japan
| | - S. Aiba
- Department of Dermatology Tohoku University Graduate School of Medicine Sendai Japan
| | - M. Nagayama
- Japan Science and Technology Agency, CREST Kawaguchi Japan
- Research Institute for Electronic Science Hokkaido University Sapporo Japan
| | - M. Denda
- Japan Science and Technology Agency, CREST Kawaguchi Japan
- Shiseido Research Center 2‐2‐1 Hayabuchi Tsuzuki‐ku Yokohama 224‐8558 Japan
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25
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Imai Y, Tsutsumi M, Tsunenari T, Nishikawa M, Matsui T, Natazuka T, Fujita T. Therapeutic trial of hematological disorders with intermittent administration of high-dose 1-alpha-hydroxyvitamin D3. Contrib Nephrol 2015; 91:95-101. [PMID: 1800016 DOI: 10.1159/000420163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Aplastic anemia and myelodysplastic syndrome were successfully treated with an intermittent administration of high-dose 1 alpha-hydroxy-vitamin D3, an active analogue of 1,25-dihydroxyvitamin D3. This effect was considered to be through the differentiation-inducing and immunomodulatory actions of 1,25-dihydroxyvitamin D3. The only adverse effect was hypercalciuria which was controllable by decreasing the dose.
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Affiliation(s)
- Y Imai
- Department of Medicine, Kobe University School of Medicine, Japan
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26
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Takeuchi M, Sakasai-Sakai A, Takata T, Ueda T, Takino J, Tsutsumi M, Hyogo H, Yamagishi S. Serum levels of toxic AGEs (TAGE) may be a promising novel biomarker in development and progression of NASH. Med Hypotheses 2015; 84:490-3. [PMID: 25697114 DOI: 10.1016/j.mehy.2015.02.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 02/04/2015] [Indexed: 12/13/2022]
Abstract
Nonalcoholic fatty liver disease (NAFLD) ranges from simple steatosis to nonalcoholic steatohepatitis (NASH), leads to fibrosis and potentially cirrhosis, liver failure, and hepatocellular carcinoma, and is one of the most common causes of liver disease worldwide. NAFLD has also been implicated in other medical conditions such as insulin resistance, obesity, metabolic syndrome, hyperlipemia, hypertension, cardiovascular disease, and diabetes. Continuous hyperglycemia has been implicated in the pathogenesis of diabetic micro- and macro-vascular complications via various metabolic pathways, and numerous hyperglycemia-induced metabolic and hemodynamic conditions exist, including the increased generation of various types of advanced glycation end-products (AGEs). We recently demonstrated that glyceraldehyde-derived AGEs (Glycer-AGEs), the predominant components of toxic AGEs (TAGE), played an important role in the pathogenesis of angiopathy in diabetic patients. Moreover, a growing body of evidence suggests that the interaction between TAGE and the receptor for AGEs may alter intracellular signaling, gene expression, and the release of pro-inflammatory molecules and also elicits the generation of oxidative stress in numerous types of cells including hepatocytes and hepatic stellate cells. Serum levels of TAGE were significantly higher in NASH patients than in those with simple steatosis and healthy controls. Moreover, serum levels of TAGE inversely correlated with adiponectin (adiponectin is produced by adipose tissue and is an anti-inflammatory adipokine that can increase insulin sensitivity). Furthermore, immunohistochemical staining of TAGE showed intense staining in the livers of patients with NASH. Serum levels of TAGE may be a useful biomarker for discriminating NASH from simple steatosis. The administration of atorvastatin (10 mg daily) for 12 months significantly improved NASH-related metabolic parameters and significantly decreased serum levels of TAGE. The steatosis grade and NAFLD activity score were also significantly improved. These results demonstrated that atorvastatin decreased the serum levels of TAGE in NASH patients with dyslipidemia and suggest the usefulness of TAGE as a biomarker for the attenuation of NASH. Serum levels of TAGE were significantly higher in non-B or non-C hepatocellular carcinoma (NBNC-HCC) patients than in NASH subjects without HCC or control subjects. TAGE may be involved in the pathogenesis of NBNC-HCC, and could, therefore, be a biomarker that could discriminate NBNC-HCC from NASH. We propose that serum levels of TAGE are promising novel targets for the diagnosis of and therapeutic interventions against NASH.
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Affiliation(s)
- M Takeuchi
- Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan.
| | - A Sakasai-Sakai
- Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan
| | - T Takata
- Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan
| | - T Ueda
- Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan
| | - J Takino
- Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Hiroshima International University, Hiroshima, Japan
| | - M Tsutsumi
- Department of Hepatology, Kanazawa Medical University, Ishikawa, Japan
| | - H Hyogo
- Department of Gastroenterology and Metabolism, Hiroshima University Hospital, Hiroshima, Japan
| | - S Yamagishi
- Department of Pathophysiology and Therapeutics of Diabetic Vascular Complications, Kurume University School of Medicine, Fukuoka, Japan
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27
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Tsuda S, Yoshida T, Tsutsumi M, Saito K. Characteristics and verification of a car-borne survey system for dose rates in air: KURAMA-II. J Environ Radioact 2015; 139:260-265. [PMID: 24698118 DOI: 10.1016/j.jenvrad.2014.02.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 02/25/2014] [Accepted: 02/27/2014] [Indexed: 06/03/2023]
Abstract
The car-borne survey system KURAMA-II, developed by the Kyoto University Research Reactor Institute, has been used for air dose rate mapping after the Fukushima Dai-ichi Nuclear Power Plant accident. KURAMA-II consists of a CsI(Tl) scintillation detector, a GPS device, and a control device for data processing. The dose rates monitored by KURAMA-II are based on the G(E) function (spectrum-dose conversion operator), which can precisely calculate dose rates from measured pulse-height distribution even if the energy spectrum changes significantly. The characteristics of KURAMA-II have been investigated with particular consideration to the reliability of the calculated G(E) function, dose rate dependence, statistical fluctuation, angular dependence, and energy dependence. The results indicate that 100 units of KURAMA-II systems have acceptable quality for mass monitoring of dose rates in the environment.
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Affiliation(s)
- S Tsuda
- Fukushima Environmental Safety Center, Headquarters of Fukushima Partnership Operations, Japan Atomic Energy Agency, Tokyo 100-8577, Japan.
| | - T Yoshida
- Fukushima Environmental Safety Center, Headquarters of Fukushima Partnership Operations, Japan Atomic Energy Agency, Tokyo 100-8577, Japan
| | - M Tsutsumi
- Calibration Standards and Measurement Section, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - K Saito
- Fukushima Environmental Safety Center, Headquarters of Fukushima Partnership Operations, Japan Atomic Energy Agency, Tokyo 100-8577, Japan
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28
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Abstract
A portable, light-weight long counter (LC) with small dimensions was developed. This LC consists of a (3)He thermal neutron counter, a cylindrical moderator and outer shields. It was designed to have an almost flat response in a neutron energy range of 0.4 eV to 5 MeV. The portable LC has a radius of 11 cm and a length of 39 cm. Its weight was successfully reduced to 15 kg. Polystyrene was employed instead of polyethylene for the front part of the moderator in order to increase the sensitivity to low-energy neutrons. The response function calculated using the MCNP code was consistent with the results of experiments using monoenergetic neutron calibration fields.
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Affiliation(s)
- Y Tanimura
- Department of Radiation Protection, Nuclear Science and Research Institute, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan
| | - M Tsutsumi
- Department of Radiation Protection, Nuclear Science and Research Institute, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan
| | - M Yoshizawa
- Department of Radiation Protection, Nuclear Science and Research Institute, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan
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29
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Tanimura Y, Tsutsumi M, Yoshizawa M. Photon dose mixed in monoenergetic neutron calibration fields using 7Li(p,n)7Be reaction. Radiat Prot Dosimetry 2014; 161:149-152. [PMID: 24482042 DOI: 10.1093/rpd/nct360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The ambient dose equivalents H*(10) of photons mixed in the 144, 250 and 565 keV monoenergetic neutron fields were evaluated using measurements from an NaI(Tl) detector and calculations done using the MCNP-ANT code. It was found that H*(10) of the photons produced in the target assembly dominates the dose, particularly near the target. The H*(10) of the photons produced in other materials in the field increases with the increase in distance from the target and could not be neglected at a large distance from the target. The ratios of the H*(10) of the mixed photons to that of the monoenergetic neutrons for 144, 250 and 565 keV neutron fields, were evaluated to be below 5.5, 6.9 and 1.5 %, respectively. The ratios were calculated at calibration points between 100 and 500 cm from the target.
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Affiliation(s)
- Y Tanimura
- Department of Radiation Protection, Nuclear Science and Research Institute, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan
| | - M Tsutsumi
- Department of Radiation Protection, Nuclear Science and Research Institute, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan
| | - M Yoshizawa
- Department of Radiation Protection, Nuclear Science and Research Institute, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan
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30
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Ohye T, Inagaki H, Kato T, Tsutsumi M, Kurahashi H. Prevalence of Emanuel syndrome: theoretical frequency and surveillance result. Pediatr Int 2014; 56:462-6. [PMID: 24980921 DOI: 10.1111/ped.12437] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Revised: 04/03/2014] [Accepted: 05/12/2014] [Indexed: 02/03/2023]
Abstract
Constitutional t(11;22)(q23;q11) is the most frequent recurrent non-Robertsonian translocation in humans. Balanced carriers of t(11;22) usually manifest no clinical symptoms, and are often identified after the birth of offspring with an unbalanced form of this translocation, known as Emanuel syndrome. To determine the prevalence of the disorder, we sent surveillance questionnaires to 735 core hospitals in Japan. The observed number of Emanuel syndrome cases was 36 and that of t(11;22) balanced translocation carriers, 40. On the basis of the de novo t(11;22) translocation frequency in sperm from healthy men, we calculated the frequency of the translocations in the general population. Accordingly, the prevalence of Emanuel syndrome was estimated at 1 in 110,000. Based on this calculation, the estimated number of Emanuel syndrome cases in Japan is 1063 and of t(11;22) balanced translocation carriers, 16,604, which are much higher than the numbers calculated from the questionnaire responses. It is possible that this discordance is partly attributable to a lack of disease identification. Further efforts should be made to increase the awareness of Emanuel syndrome to ensure a better quality of life for affected patients and their families.
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Affiliation(s)
- Tamae Ohye
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi, Japan
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31
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Tsutsumi M, Fujiwara R, Nishizawa H, Ito M, Kogo H, Inagaki H, Ohye T, Kato T, Fujii T, Kurahashi H. Age-related decrease of meiotic cohesins in human oocytes. PLoS One 2014; 9:e96710. [PMID: 24806359 PMCID: PMC4013030 DOI: 10.1371/journal.pone.0096710] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 04/10/2014] [Indexed: 12/22/2022] Open
Abstract
Aneuploidy in fetal chromosomes is one of the causes of pregnancy loss and of congenital birth defects. It is known that the frequency of oocyte aneuploidy increases with the human maternal age. Recent data have highlighted the contribution of cohesin complexes in the correct segregation of meiotic chromosomes. In mammalian oocytes, cohesion is established during the fetal stages and meiosis-specific cohesin subunits are not replenished after birth, raising the possibility that the long meiotic arrest of oocytes facilitates a deterioration of cohesion that leads to age-related increases in aneuploidy. We here examined the cohesin levels in dictyate oocytes from different age groups of humans and mice by immunofluorescence analyses of ovarian sections. The meiosis-specific cohesin subunits, REC8 and SMC1B, were found to be decreased in women aged 40 and over compared with those aged around 20 years (P<0.01). Age-related decreases in meiotic cohesins were also evident in mice. Interestingly, SMC1A, the mitotic counterpart of SMC1B, was substantially detectable in human oocytes, but little expressed in mice. Further, the amount of mitotic cohesins of mice slightly increased with age. These results suggest that, mitotic and meiotic cohesins may operate in a coordinated way to maintain cohesions over a sustained period in humans and that age-related decreases in meiotic cohesin subunits impair sister chromatid cohesion leading to increased segregation errors.
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Affiliation(s)
- Makiko Tsutsumi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi, Japan
| | - Reiko Fujiwara
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi, Japan
| | - Haruki Nishizawa
- Department of Obstetrics and Gynecology, Fujita Health University, Toyoake, Aichi, Japan
| | - Mayuko Ito
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi, Japan
- Department of Obstetrics and Gynecology, Fujita Health University, Toyoake, Aichi, Japan
| | - Hiroshi Kogo
- Department of Anatomy and Cell Biology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Hidehito Inagaki
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi, Japan
| | - Tamae Ohye
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi, Japan
| | - Takema Kato
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi, Japan
| | - Takuma Fujii
- Department of Obstetrics and Gynecology, Fujita Health University, Toyoake, Aichi, Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi, Japan
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32
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Inagaki H, Ohye T, Kogo H, Tsutsumi M, Kato T, Tong M, Emanuel BS, Kurahashi H. Two sequential cleavage reactions on cruciform DNA structures cause palindrome-mediated chromosomal translocations. Nat Commun 2013; 4:1592. [PMID: 23481400 DOI: 10.1038/ncomms2595] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 02/11/2013] [Indexed: 11/09/2022] Open
Abstract
Gross chromosomal rearrangements (GCRs), such as translocations, deletions or inversions, are often generated by illegitimate repair between two DNA breakages at regions with nucleotide sequences that might potentially adopt a non-B DNA conformation. We previously established a plasmid-based model system that recapitulates palindrome-mediated recurrent chromosomal translocations in humans, and demonstrated that cruciform DNA conformation is required for the translocation-like rearrangements. Here we show that two sequential reactions that cleave the cruciform structures give rise to the translocation: GEN1-mediated resolution that cleaves diagonally at the four-way junction of the cruciform and Artemis-mediated opening of the subsequently formed hairpin ends. Indeed, translocation products in human sperm reveal the remnants of this two-step mechanism. These two intrinsic pathways that normally fulfil vital functions independently, Holliday-junction resolution in homologous recombination and coding joint formation in rearrangement of antigen-receptor genes, act upon the unusual DNA conformation in concert and lead to a subset of recurrent GCRs in humans.
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Affiliation(s)
- Hidehito Inagaki
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi 470-1192, Japan
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Matsumoto Y, Nakai K, Tsutsumi M, Iko M, Oishi H, Eto H, Mizokami T, Nii K, Aikawa H, Kazekawa K. A simplified pull-through angioplasty technique without a snare device. A technical note. Interv Neuroradiol 2013; 19:167-72. [PMID: 23693039 DOI: 10.1177/159101991301900204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2012] [Accepted: 01/13/2013] [Indexed: 11/16/2022] Open
Abstract
The pull-through angioplasty technique allows stable wire tension and stabilization of the device during the procedure. In this technique, a guide wire is passed from one sheath to another, usually with the aid of a snare device. We describe the treatment of occlusive subclavian artery disease and lesion at the origin of the vertebral artery employing a brachiofemoral pull-through technique without using a snare device. In this technique, the guide wire is advanced from the femoral artery to the brachial artery. The guide wire is directly inserted into the sheath placed at the brachial artery. The brachial artery is compressed proximal to the point of sheath insertion to prevent bleeding. The sheath is extracted temporally and the guide wire is caught outside of the body. The sheath is then introduced again through the guide wire. We used the pull-through technique without a snare device in seven cases, and we were able to build the pull-through system in six of these cases without a snare device. This pull-through technique without a snare device is not difficult to use, and may reduce the time and cost of angioplasty procedures.
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Affiliation(s)
- Y Matsumoto
- Department of Neurosurgery, Fukuoka University Chikushi Hospital, Fukuoka, Japan.
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Kogo H, Tsutsumi M, Inagaki H, Ohye T, Kiyonari H, Kurahashi H. HORMAD2 is essential for synapsis surveillance during meiotic prophase via the recruitment of ATR activity. Genes Cells 2012; 17:897-912. [DOI: 10.1111/gtc.12005] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 08/21/2012] [Indexed: 12/01/2022]
Affiliation(s)
- Hiroshi Kogo
- Division of Molecular Genetics; Institute for Comprehensive Medical Science; Fujita Health University; Toyoake; Aichi; 470-1192; Japan
| | - Makiko Tsutsumi
- Division of Molecular Genetics; Institute for Comprehensive Medical Science; Fujita Health University; Toyoake; Aichi; 470-1192; Japan
| | - Hidehito Inagaki
- Division of Molecular Genetics; Institute for Comprehensive Medical Science; Fujita Health University; Toyoake; Aichi; 470-1192; Japan
| | - Tamae Ohye
- Division of Molecular Genetics; Institute for Comprehensive Medical Science; Fujita Health University; Toyoake; Aichi; 470-1192; Japan
| | - Hiroshi Kiyonari
- Laboratory for Animal Resources and Genetic Engineering; RIKEN Center for Developmental Biology; Kobe; Hyogo; 650-0047; Japan
| | - Hiroki Kurahashi
- Division of Molecular Genetics; Institute for Comprehensive Medical Science; Fujita Health University; Toyoake; Aichi; 470-1192; Japan
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Kawasaki T, Kurauchi K, Higashihata A, Deguchi T, Ishikawa Y, Yamauchi M, Sasanuma M, Hori H, Tsutsumi M, Wakamatsu Y, Yuba S, Kinoshita M. Transgenic medaka fish which mimic the endogenous expression of neuronal kinesin, KIF5A. Brain Res 2012; 1480:12-21. [PMID: 22975131 DOI: 10.1016/j.brainres.2012.08.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Revised: 08/22/2012] [Accepted: 08/27/2012] [Indexed: 11/19/2022]
Abstract
Intracellular transport is spatiotemporally controlled by microtubule-dependent motor proteins, including kinesins. In order to elucidate the mechanisms controlling kinesin expression, it is important to analyze their genomic regulatory regions. In this study, we cloned the neuronal tissue-specific kinesin in medaka fish and generated transgenic fish which mimic endogenous neuronal kinesin expression in order to elucidate the mechanisms which regulate kinesin expression. Searches for medaka neuronal orthologues by RT-PCR identified a candidate gene expressed only in neuronal tissues. Using BAC clones, we determined the cDNA sequence and the gene structure of the candidate neuronal kinesin. Evolutionary analysis indicated that the candidate gene encoded medaka KIF5Aa. The endogenous medaka orthologue was found to be expressed only in the nervous system, including the brain and spinal cord, while expression of KIF5Ab was not exclusive to neuronal tissues. Transgenic (Tg) medaka that expressed EGFP under the control of the 6.9 kbp 5' and 1.9kbp 3' flanking regions of the KIF5Aa gene showed characteristic expression throughout the nervous system, including the brain, spinal cord, olfactory pit, eye and cranial nerve. Immunohistological analysis showed that EGFP expression in Tg fish co-localized with expression of HuC/D, a neuronal marker. These results demonstrate that the 6.9 kbp 5' and 1.9 kbp 3' flanking regions of medaka KIF5Aa have neuronal-specific promoter activity mimicking endogenous expression of medaka KIF5Ab. This transgenic fish strain will be useful for further functional analysis of the effects of these regulatory regions on gene expression.
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Affiliation(s)
- Takashi Kawasaki
- Health Research Institute, National institute of Advanced Industrial Science and Technology (AIST), Nakoji, Amagasaki 661-0974, Japan
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Kurahashi H, Kogo H, Tsutsumi M, Inagaki H, Ohye T. Failure of homologous synapsis and sex-specific reproduction problems. Front Genet 2012; 3:112. [PMID: 22719750 PMCID: PMC3376420 DOI: 10.3389/fgene.2012.00112] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Accepted: 05/30/2012] [Indexed: 01/15/2023] Open
Abstract
The prophase of meiosis I ensures the correct segregation of chromosomes to each daughter cell. This includes the pairing, synapsis, and recombination of homologous chromosomes. A subset of chromosomal abnormalities, including translocation and inversion, disturbs these processes, resulting in the failure to complete synapsis. This activates the meiotic pachytene checkpoint, and the gametes are fated to undergo cell cycle arrest and subsequent apoptosis. Spermatogenic cells appear to be more vulnerable to the pachytene checkpoint, and male carriers of chromosomal abnormalities are more susceptible to infertility. In contrast, oocytes tend to bypass the checkpoint and instead generate other problems, such as chromosome imbalance that often leads to recurrent pregnancy loss in female carriers. Recent advances in genetic manipulation technologies have increased our knowledge about the pachytene checkpoint and surveillance systems that detect chromosomal synapsis. This review focuses on the consequences of synapsis failure in humans and provides an overview of the mechanisms involved. We also discuss the sexual dimorphism of the involved pathways that leads to the differences in reproductive outcomes between males and females.
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Affiliation(s)
- Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi, Japan
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Abstract
Meiotic pachytene checkpoints monitor the failure of homologous recombination and synapsis to ensure faithful chromosome segregation during gamete formation. To date, the molecular basis of the mammalian pachytene checkpoints has remained largely unknown. We here report that mouse HORMAD1 is required for a meiotic prophase checkpoint that eliminates asynaptic oocytes. Hormad1-deficient mice are infertile and show an extensive failure of homologous pairing and synapsis, consistent with the evolutionarily conserved function of meiotic HORMA domain proteins. Unexpectedly, Hormad1-deficient ovaries contain a normal number of oocytes despite asynapsis and consequently produce aneuploid oocytes, indicating a checkpoint failure. By the analysis of Hormad1/Spo11 double mutants, the Hormad1 deficiency was found to abrogate the massive oocyte loss in the Spo11-deficient ovary. The Hormad1 deficiency also causes the eventual loss of pseudo sex body in the Spo11-deficient ovary and testis. These results suggest the involvement of HORMAD1 in the repressive chromatin domain formation that is proposed to be important in the meiotic prophase checkpoints. We also show the extensive phosphorylation of HORMAD1 in the Spo11-deficient testis and ovary, suggesting an involvement of novel DNA damage-independent phosphorylation signaling in the surveillance mechanism. Our present results provide clues to HORMAD1-dependent checkpoint in response to asynapsis in mammalian meiosis.
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Affiliation(s)
- Hiroshi Kogo
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi 470-1192, Japan
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Hozumi S, Hirabayashi R, Yoshizawa A, Ogata M, Ishitani T, Tsutsumi M, Kuroiwa A, Itoh M, Kikuchi Y. DEAD-box protein Ddx46 is required for the development of the digestive organs and brain in zebrafish. PLoS One 2012; 7:e33675. [PMID: 22442707 PMCID: PMC3307747 DOI: 10.1371/journal.pone.0033675] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Accepted: 02/14/2012] [Indexed: 01/12/2023] Open
Abstract
Spatially and temporally controlled gene expression, including transcription, several mRNA processing steps, and the export of mature mRNA to the cytoplasm, is essential for developmental processes. It is well known that RNA helicases of the DExD/H-box protein family are involved in these gene expression processes, including transcription, pre-mRNA splicing, and rRNA biogenesis. Although one DExD/H-box protein, Prp5, a homologue of vertebrate Ddx46, has been shown to play important roles in pre-mRNA splicing in yeast, the in vivo function of Ddx46 remains to be fully elucidated in metazoans. In this study, we isolated zebrafish morendo (mor), a mutant that shows developmental defects in the digestive organs and brain, and found that it encodes Ddx46. The Ddx46 transcript is maternally supplied, and as development proceeds in zebrafish larvae, its ubiquitous expression gradually becomes restricted to those organs. The results of whole-mount in situ hybridization showed that the expression of various molecular markers in these organs is considerably reduced in the Ddx46 mutant. Furthermore, splicing status analysis with RT-PCR revealed unspliced forms of mRNAs in the digestive organ and brain tissues of the Ddx46 mutant, suggesting that Ddx46 may be required for pre-mRNA splicing during zebrafish development. Therefore, our results suggest a model in which zebrafish Ddx46 is required for the development of the digestive organs and brain, possibly through the control of pre-mRNA splicing.
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Affiliation(s)
- Shunya Hozumi
- Department of Biological Science, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - Ryo Hirabayashi
- Department of Biological Science, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - Akio Yoshizawa
- Department of Biological Science, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, Japan
| | - Mitsuko Ogata
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, Japan
| | - Tohru Ishitani
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, Japan
| | - Makiko Tsutsumi
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, Japan
| | - Atsushi Kuroiwa
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, Japan
| | - Motoyuki Itoh
- Division of Biological Science, Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, Japan
| | - Yutaka Kikuchi
- Department of Biological Science, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
- * E-mail:
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Abstract
Aneuploidy is one of the most common and serious pregnancy complications in humans. Most conceptuses with autosomal aneuploidy die in utero, resulting in early pregnancy loss. However, some fetuses with aneuploidy survive to term but suffer from disorders associated with congenital anomalies and mental retardation, such as Down syndrome with trisomy 21. Three general characteristics of this condition are well acknowledged: (i) in most cases the extra chromosome is of maternal origin; (ii) most cases are derived from a malsegregation event in meiosis I; and (iii) the frequency of these errors increases with maternal age. The basis for the age-dependent increase in meiosis I errors has been a long-standing enigma. Many investigators have addressed the nature of this biological phenomenon through genomic analyses of extra chromosome 21 using polymorphic markers to determine the frequency or location of crossovers that should ensure faithful chromosome segregation. Cytogenetic analyses of in vitro unfertilized oocytes have also been performed. However, no definitive conclusions regarding meiosis I errors have yet been reached from such studies. Recent findings in conditional knock-out mice for meiosis-specific cohesin have shed further light on this issue. The present review focuses on the current understanding of age-related aneuploidy and provides an overview of the mechanisms involved. We refer to recent data to illustrate some of the new paradigms that have arisen in this field.
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Affiliation(s)
- Hiroki Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan.
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Yoshizawa A, Nakahara Y, Izawa T, Ishitani T, Tsutsumi M, Kuroiwa A, Itoh M, Kikuchi Y. Zebrafish Dmrta2 regulates neurogenesis in the telencephalon. Genes Cells 2012; 16:1097-109. [PMID: 22023386 DOI: 10.1111/j.1365-2443.2011.01555.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Although recent findings showed that some Drosophila doublesex and Caenorhabditis elegans mab-3 related genes are expressed in neural tissues during development, their functions have not been fully elucidated. Here, we isolated a zebrafish mutant, ha2, that shows defects in telencephalic neurogenesis and found that ha2 encodes Doublesex and MAB-3 related transcription factor like family A2 (Dmrta2). dmrta2 expression is restricted to the telencephalon, diencephalon and olfactory placode during somitogenesis. We found that the expression of the proneural gene, neurogenin1, in the posterior and dorsal region of telencephalon (posterior-dorsal telencephalon) is markedly reduced in this mutant at the 14-somite stage without any defects in cell proliferation or cell death. In contrast, the telencephalic expression of her6, a Hes-related gene that is known to encode a negative regulator of neurogenin1, expands dramatically in the ha2 mutant. Based on over-expression experiments and epistatic analyses, we propose that zebrafish Dmrta2 controls neurogenin1 expression by repressing her6 in the posterior-dorsal telencephalon. Furthermore, the expression domains of the telencephalic marker genes, foxg1 and emx3, and the neuronal differentiation gene, neurod, are downregulated in the ha2 posterior-dorsal telencephalon during somitogenesis. These results suggest that Dmrta2 plays important roles in the specification of the posterior-dorsal telencephalic cell fate during somitogenesis.
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Affiliation(s)
- Akio Yoshizawa
- Department of Biological Science, Graduate School of Science, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima, Hiroshima 739-8526 Japan
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Ahmed WA, Tsutsumi M, Nakata S, Mori T, Nishimura Y, Fujisawa T, Kato I, Nakashima M, Kurahashi H, Suzuki K. A functional variation in the hypocretin neuropeptide precursor gene may be associated with obstructive sleep apnea syndrome in Japan. Laryngoscope 2012; 122:925-9. [PMID: 22302634 DOI: 10.1002/lary.23179] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Accepted: 12/07/2011] [Indexed: 11/08/2022]
Abstract
OBJECTIVES/HYPOTHESIS To evaluate the association of hypocretin neuropeptide precursor gene (HCRT) variations with obstructive sleep apnea syndrome (OSAS) in a cohort of Japanese patients and to further evaluate whether the significant HCRT variations have potential functional consequences on HCRT expression. STUDY DESIGN Case-control genetic association study. METHODS We studied the genetic variations within the HCRT gene. The study population consisted of 100 OSAS patients and 100 control subjects. The HCRT gene was amplified by polymerase chain reaction in all study subjects followed by direct sequencing and analysis of sequencing data. RESULTS Two genetic variations within the HCRT intron, IVS1+16T>C (rs9902709) and IVS1-69G>C, were identified with significant differences between patients and controls (P < .05). A reporter gene assay using HeLa cells showed that the construct containing the C allele of the rs9902709 variation had significantly higher luciferase activity compared with the construct containing the T allele (P = .002). Furthermore, enzyme immunoassay revealed that subjects with T/C and C/C genotypes for rs9902709 had 1.4-fold and 1.5-fold increases in sera levels of orexin-A, respectively. CONCLUSIONS Our genetic association study, followed by functional and quantitative phenotyping assays, demonstrated a functional locus within the HCRT gene, which may act to increase HCRT expression and lead to a protective effect against the development of OSAS.
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Affiliation(s)
- Wael A Ahmed
- Department of Otolaryngology, Second Hospital, School of Medicine, Fujita Health University, Toyoake, Aichi, Japan
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Kurahashi H, Ohye T, Inagaki H, Kogo H, Tsutsumi M. Mechanism of complex gross chromosomal rearrangements: A commentary on Concomitant microduplications of MECP2 and ATRX in male patients with severe mental retardation. J Hum Genet 2011; 57:81-3. [DOI: 10.1038/jhg.2011.143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Suzuki S, Tsutsumi M, Palo SE, Ebihara Y, Taguchi M, Ejiri M. Short-period gravity waves and ripples in the South Pole mesosphere. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011jd015882] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Miyagawa T, Ishikawa S, Ichioka D, Emura M, Kojima T, Tsutsumi M, Irie T, Kondou M, Mitake T. UP-02.133 Real-time Virtual Sonography for Prostate-Targeted Biopsy Based on MRI Data: Evaluation of Accuracy with Resected Specimens. Urology 2011. [DOI: 10.1016/j.urology.2011.07.951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tsutsumi M, Kogo H, Kowa-Sugiyama H, Inagaki H, Ohye T, Kurahashi H. Characterization of a Novel Mouse Gene Encoding an SYCP3-Like Protein That Relocalizes from the XY Body to the Nucleolus During Prophase of Male Meiosis I1. Biol Reprod 2011; 85:165-71. [DOI: 10.1095/biolreprod.110.087270] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Kurahashi H, Inagaki H, Ohye T, Kogo H, Tsutsumi M, Kato T, Tong M, Emanuel BS. The constitutional t(11;22): implications for a novel mechanism responsible for gross chromosomal rearrangements. Clin Genet 2011; 78:299-309. [PMID: 20507342 DOI: 10.1111/j.1399-0004.2010.01445.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The constitutional t(11;22)(q23;q11) is the most common recurrent non-Robertsonian translocation in humans. The breakpoint sequences of both chromosomes are characterized by several hundred base pairs of palindromic AT-rich repeats (PATRRs). Similar PATRRs have also been identified at the breakpoints of other nonrecurrent translocations, suggesting that PATRR-mediated chromosomal translocation represents one of the universal pathways for gross chromosomal rearrangement in the human genome. We propose that PATRRs have the potential to form cruciform structures through intrastrand-base pairing in single-stranded DNA, creating a source of genomic instability and leading to translocations. Indeed, de novo examples of the t(11;22) are detected at a high frequency in sperm from normal healthy males. This review synthesizes recent data illustrating a novel paradigm for an apparent spermatogenesis-specific translocation mechanism. This observation has important implications pertaining to the predominantly paternal origin of de novo gross chromosomal rearrangements in humans.
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Affiliation(s)
- H Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi, Japan.
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47
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Tanimura Y, Tsutsumi M, Saegusa J, Shikaze Y, Yoshizawa M. Evaluation of target photon dose mixed in mono-energetic neutron fields using 7Li(p,n)7Be reaction. RADIAT MEAS 2010. [DOI: 10.1016/j.radmeas.2010.06.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kikuchi Y, Yoshizawa A, Nakahara Y, Izawa T, Ishitani T, Tsutsumi M, Kuroiwa A, Itoh M. Zebrafish kuririn is a crucial factor for the telencephalic neurogenesis through the regulation of Hes-related gene. Dev Biol 2010. [DOI: 10.1016/j.ydbio.2010.05.300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sakai H, Gamo T, Kim ES, Tsutsumi M, Tanaka T, Ishibashi J, Wakita H, Yamano M, Oomori T. Venting of carbon dioxide-rich fluid and hydrate formation in mid-okinawa trough backarc basin. Science 2010; 248:1093-6. [PMID: 17733370 DOI: 10.1126/science.248.4959.1093] [Citation(s) in RCA: 232] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Carbon dioxide-rich fluid bubbles, containing approximately 86 percent CO(2), 3 percent H(2)S, and 11 percent residual gas (CH(4) + H(2)), were observed to emerge from the sea floor at 1335- to 1550-m depth in the JADE hydrothermal field, mid-Okinawa Trough. Upon contact with seawater at 3.8 degrees C, gas hydrate immediately formed on the surface of the bubbles and these hydrates coalesced to form pipes standing on the sediments. Chemical composition and carbon, sulfur, and helium isotopic ratios indicate that the CO(2)-rich fluid was derived from the same magmatic source as dissolved gases in 320 degrees C hydrothermal solution emitted from a nearby black smoker chimney. The CO(2)-rich fluid phase may be separated by subsurface boiling of hydrothermal solutions or by leaching of CO(2)-rich fluid inclusion during posteruption interaction between pore water and volcanogenic sediments.
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Tong M, Kato T, Yamada K, Inagaki H, Kogo H, Ohye T, Tsutsumi M, Wang J, Emanuel BS, Kurahashi H. Polymorphisms of the 22q11.2 breakpoint region influence the frequency of de novo constitutional t(11;22)s in sperm. Hum Mol Genet 2010; 19:2630-7. [PMID: 20392709 DOI: 10.1093/hmg/ddq150] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The constitutional t(11;22) is the most frequent recurrent non-Robertsonian translocation in humans, the breakpoints of which are located within palindromic AT-rich repeats on 11q23 and 22q11 (PATRR11 and PATRR22). Genetic variation of the PATRR11 was found to affect de novo t(11;22) translocation frequency in sperm derived from normal healthy males, suggesting the hypothesis that polymorphisms of the PATRR22 might also influence the translocation frequency. Although the complicated structure of the PATRR22 locus prevented determining the genotype of the PATRR22 in each individual, genotyping of flanking markers as well as identification of rare variants allowed us to demonstrate an association between the PATRR22 allele type and the translocation frequency. We found that size and symmetry of the PATRR22 affect the de novo translocation frequency, which is lower for the shorter or more asymmetric versions. These data lend support to our hypothesis that the PATRRs form secondary structures in the nucleus that induce genomic instability leading to the recurrent translocation.
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Affiliation(s)
- Maoqing Tong
- Institute for Comprehensive Medical Science, Fujita Health University, Aichi, Japan
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