Elucidation of genetic factors and molecular pathology of neurodevelopmental disorders by a multifaceted approach
Project/Area Number |
20H03641
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 52050:Embryonic medicine and pediatrics-related
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Research Institution | Hamamatsu University School of Medicine |
Principal Investigator |
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Project Status |
Completed (Fiscal Year 2022)
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Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2021: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2020: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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Keywords | マルチオミクス解析 / インフォマティクス解析 / 尿細胞 / ゲノム編集マウス / 小児脳神経疾患 / 変異マウス / インフォマティクス / マウスモデル |
Outline of Research at the Start |
希少遺伝性疾患である小児脳神経疾患の分子基盤と病態の解明を目的として、下記の研究項目を推進する。 (1)最先端のインフォマティクス解析によるエクソームデータの再解析:標準化表現型情報を用いた変異の順位付けとAIでのスプライス異常予測による、エクソーム解析で見過ごされてきた病的変異の同定 (2)病的変異未同定例に対するマルチオミクス(全ゲノム+RNA-seq)解析:エクソーム解析では同定できない、イントロンや転写調節領域の病的変異・ゲノム構造異常の同定 (3)同定された変異をゲノム編集マウスで再現:同定された変異と疾患発症の因果関係を、変異マウスを用いて実験的に証明すると同時に、その分子病態に迫る
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Outline of Final Research Achievements |
By reanalyzing exome data using state-of-the-art informatics analysis and by performing a multi-omics analysis combining RNA-seq and whole genome analysis using urinary cells, we succeeded in identifying causative genetic abnormalities in 50% of the cases. The analysis was particularly useful in identifying variants in intronic regions, and the prediction of splice aberrations and the evaluation of splice aberrations by RNA-seq are highly complementary to each other. The multi-omics analysis using urine cells, which can be collected noninvasively, are expected to improve the gene diagnosis rate. In addition, we reported four reports on the elucidation of molecular pathophysiology using genome-edited mice.
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Academic Significance and Societal Importance of the Research Achievements |
尿細胞は、皮膚線維芽細胞の代替細胞として非侵襲的に取得可能である点が優れており、今後採取方法に更なる改良を加えることで、マルチオミクス解析を用いた遺伝子解析研究におけるパラダイムシフトを起こすことが期待される。実際に尿細胞用いたRNA-seq解析で原因未同定であった3症例の原因同定に成功しており、疾患原因が不明で苦しむ患者の助けになる臨床的意義の高い研究成果である。
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Report
(4 results)
Research Products
(63 results)
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[Journal Article] Microdeletion at ESR1 Intron 6 (DEL_6_75504) Is a Susceptibility Factor for Cryptorchidism and Hypospadias.2023
Author(s)
Masunaga Y, Fujisawa Y, Massart F, Spinelli C, Kojima Y, Mizuno K, Hayashi Y, Sasagawa I, Yoshida R, Kato F, Fukami M, Kamatani N, Saitsu H, Ogata T.
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Journal Title
J Clin Endocrinol Metab.
Volume: Apr 3
Issue: 10
Pages: 1-11
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Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Clinical and molecular findings in three Japanese patients with N-acetylneuraminic acid synthetase-congenital disorder of glycosylation (NANS-CDG)2022
Author(s)
Yohei Masunaga, Gen Nishimura, Koji Takahashi, Tomiyuki Hishiyama, Masatoshi Imamura, Kenichi Kashimada, Machiko Kadoya, Yoshinao Wada, Nobuhiko Okamoto, Daiju Oba, Hirofumi Ohashi, Mitsuru Ikeno, Yuko Sakamoto, Maki Fukami, Hirotomo Saitsu, Tsutomu Ogata
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Journal Title
Scientific Reports
Volume: 12
Issue: 1
Pages: 17079-17079
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Peer Reviewed / Open Access
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[Journal Article] Genetic and phenotypic analysis of 101 patients with developmental delay or intellectual disability using whole-exome sequencing2021
Author(s)
Hiraide T, Yamoto K, Masunaga Y, Asahina M, Endoh Y, Ohkubo Y, Matsubayashi T, Tsurui S, Yamada H, Yanagi K, Nakashima M, Hirano K, Sugimura H, Fukuda T, Ogata T, Saistu T
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Journal Title
Clin Genet
Volume: 100
Issue: 1
Pages: 40-50
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Related Report
Peer Reviewed
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[Journal Article] ATP6V0A1 encoding the a1-subunit of the V0 domain of vacuolar H(+)-ATPases is essential for brain development in humans and mice2021
Author(s)
Aoto K, Kato M, Akita T, Nakashima M, Mutoh H, Akasaka N, Tohyama J, Nomura Y, Hoshino K, Ago Y, Tanaka R, Epstein O, Ben-Haim R, Heyman E, Miyazaki T, Belal H, Takabayashi S, Ohba C, Takata A, Mizuguchi T, Miyatake S, Miyake N, Fukuda A, Matsumoto N and Saitsu H
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Journal Title
Nat Commun
Volume: 12
Issue: 1
Pages: 2107-2107
DOI
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Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Association of early-onset epileptic encephalopathy with involuntary movements - Case series and literature review.2021
Author(s)
Arisaka A, Nakashima M, Kumada S, Inoue K, Nishida H, Mashimo H, Kashii H, Kato M, Maruyama K, Okumura A, Saitsu H, Matsumoto N, Fukuda M.
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Journal Title
Epilepsy Behav Rep.
Volume: 15
Pages: 100417-100417
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Peer Reviewed / Open Access
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[Journal Article] De novo CACNA1G variants in developmental delay and early-onset epileptic encephalopathies2020
Author(s)
Misako Kunii, Hiroshi Doi, Shunta Hashiguchi, Toyojiro Matsuishi, Yasunari Sakai, Mizue Iai, Masaki Okubo, Haruko Nakamura, Keita Takahashi, Atsuko Katsumoto, Mikiko Tada, Hideyuki Takeuchi, Taro Ishikawa, Noriko Miyake, Hirotomo Saitsu, Naomichi Matsumoto, Fumiaki Tanaka
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Journal Title
Journal of the Neurological Sciences
Volume: 416
Pages: 117047-117047
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Peer Reviewed / Open Access
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[Journal Article] GNAO1 organizes the cytoskeletal remodeling and firing of developing neurons.2020
Author(s)
Akamine S, Okuzono S, Yamamoto H, Setoyama D, Sagata N, Ohgidani M, Kato TA, Ishitani T, Kato H, Masuda K, Matsushita Y, Ono H, Ishizaki Y, Sanefuji M, Saitsu H, Matsumoto N, Kang D, Kanba S, Nakabeppu Y, Sakai Y, Ohga S.
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Journal Title
FASEB J
Volume: 34
Issue: 12
Pages: 16601-16621
DOI
Related Report
Peer Reviewed / Open Access
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