Updated on 2026/03/10

写真a

 
iwata tetsuo
 
Organization
School of Life Science and Technology Assistant Professor
Title
Assistant Professor
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Degree

  • 博士(工学) ( 東京工業大学 )

Research Interests

  • シスエレメント

  • Genome editing

  • Bacillus subtilis

  • enhancer

  • transgenic mouse

  • odorant receptor

  • gene expression

  • 遺伝子組換えマウス

  • ゲノムベクター

Research Areas

  • Life Science / Laboratory animal science

  • Life Science / Neuroscience-general

Education

  • Tokyo Institute of Technology

    2010.4 - 2014.12

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  • Tokyo Institute of Technology

    2008.4 - 2010.3

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  • Suzuka National College of Technology   Department of Chemistry and Biochemistry

    - 2008.3

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Research History

  • Tokyo Institute of Technology   Center for Invegrative Bioscience

    2023.4

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  • Tokyo Institute of Technology   School of Life Science and Technology   Assistant Professor

    2021.4

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    Country:Japan

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  • Tokyo Institute of Technology   Biomaterials Analysis Division, Open Facility Center   Technical staff

    2020.4 - 2021.3

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    Country:Japan

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  • Tokyo Institute of Technology   Biomaterials Analysis Division, Technical Department   Technical Staff

    2016.12 - 2020.3

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    Country:Japan

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  • Tokyo Institute of Technology

    2016.4 - 2016.11

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  • JSPS Research Fellow

    2014.4 - 2016.3

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  • RIKEN

    2014.4 - 2014.6

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Professional Memberships

  • THE MOLECULAR BIOLOGY SOCIETY OF JAPAN

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  • THE JAPANESE ASSOCIATION FOR THE STUDY OF TASTE AND SMELL

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Papers

  • Impaired pheromone detection and abnormal sexual behavior in female mice deficient for ancV1R Reviewed

    Hiro Kondo, Tetsuo Iwata, Koji Sato, Riseru Koshiishi, Hikoyu Suzuki, Ken Murata, Marc Spehr, Kazushige Touhara, Masato Nikaido, Junji Hirota

    Current Biology   35 ( 1 )   21 - 35.e8   2025.1

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.cub.2024.10.077

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  • A class I odorant receptor enhancer shares a functional motif with class II enhancers. Reviewed International journal

    Tetsuo Iwata, Satoshi Tomeoka, Junji Hirota

    Scientific reports   11 ( 1 )   510   2021.1

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    In the mouse, 129 functional class I odorant receptor (OR) genes reside in a ~ 3 megabase huge gene cluster on chromosome 7. The J element, a long-range cis-regulatory element governs the singular expression of class I OR genes by exerting its effect over the whole cluster. To elucidate the molecular mechanisms underlying class I-specific enhancer activity of the J element, we analyzed the J element sequence to determine the functional region and essential motif. The 430-bp core J element, that is highly conserved in mammalian species from the platypus to humans, contains a class I-specific conserved motif of AAACTTTTC, multiple homeodomain sites, and a neighboring O/E-like site, as in class II OR-enhancers. A series of transgenic reporter assays demonstrated that the class I-specific motif is not essential, but the 330-bp core J-H/O containing the homeodomain and O/E-like sites is necessary and sufficient for class I-specific enhancer activity. Further motif analysis revealed that one of homeodomain sequence is the Greek Islands composite motif of the adjacent homeodomain and O/E-like sequences, and mutations in the composite motif abolished or severely reduced class I-enhancer activity. Our results demonstrate that class I and class II enhancers share a functional motif for their enhancer activity.

    DOI: 10.1038/s41598-020-79980-x

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  • Bcl11b controls odorant receptor class choice in mice. Reviewed

    Enomoto T, Nishida H, Iwata T, Fujita A, Nakayama K, Kashiwagi T, Hatanaka Y, Kondo H, Kajitani R, Itoh T, Ohmoto M, Matsumoto I, Hirota J

    Communications biology   2 ( 1 )   296   2019

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1038/s42003-019-0536-x

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    Other Link: http://www.nature.com/articles/s42003-019-0536-x

  • A Single Pheromone Receptor Gene Conserved across 400 My of Vertebrate Evolution. Reviewed International journal

    Hikoyu Suzuki, Hidefumi Nishida, Hiro Kondo, Ryota Yoda, Tetsuo Iwata, Kanako Nakayama, Takayuki Enomoto, Jiaqi Wu, Keiko Moriya-Ito, Masao Miyazaki, Yoshihiro Wakabayashi, Takushi Kishida, Masataka Okabe, Yutaka Suzuki, Takehiko Ito, Junji Hirota, Masato Nikaido

    Molecular biology and evolution   35 ( 12 )   2928 - 2939   2018.12

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    Pheromones are crucial for eliciting social and sexual behaviors in diverse animal species. The vomeronasal receptor type-1 (V1R) genes, encoding members of a pheromone receptor family, are highly variable in number and repertoire among mammals due to extensive gene gain and loss. Here, we report a novel pheromone receptor gene belonging to the V1R family, named ancient V1R (ancV1R), which is shared among most Osteichthyes (bony vertebrates) from the basal lineage of ray-finned fishes to mammals. Phylogenetic and syntenic analyses of ancV1R using 115 vertebrate genomes revealed that it represents an orthologous gene conserved for >400 My of vertebrate evolution. Interestingly, the loss of ancV1R in some tetrapods is coincident with the degeneration of the vomeronasal organ in higher primates, cetaceans, and some reptiles including birds and crocodilians. In addition, ancV1R is expressed in most mature vomeronasal sensory neurons in contrast with canonical V1Rs, which are sparsely expressed in a manner that is consistent with the "one neuron-one receptor" rule. Our results imply that a previously undescribed V1R gene inherited from an ancient Silurian ancestor may have played an important functional role in the evolution of vertebrate vomeronasal organ.

    DOI: 10.1093/molbev/msy186

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  • A long-range cis-regulatory element for class I odorant receptor genes Reviewed

    Tetsuo Iwata, Yoshihito Niimura, Chizuru Kobayashi, Daichi Shirakawa, Hikoyu Suzuki, Takayuki Enomoto, Kazushige Touhara, Yoshihiro Yoshihara, Junji Hirota

    NATURE COMMUNICATIONS   8 ( 1 )   885   2017.10

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41467-017-00870-4

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  • An inducible recA expression Bacillus subtilis genome vector for stable manipulation of large DNA fragments Reviewed

    Takafumi Ogawa, Tetsuo Iwata, Shinya Kaneko, Mitsuhiro Itaya, Junji Hirota

    BMC GENOMICS   16   209   2015.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/s12864-015-1425-4

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  • Bacillus subtilis genome vector-based complete manipulation and reconstruction of genomic DNA for mouse transgenesis Reviewed

    Tetsuo Iwata, Shinya Kaneko, Yuh Shiwa, Takayuki Enomoto, Hirofumi Yoshikawa, Junji Hirota

    BMC GENOMICS   14   300   2013.5

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/1471-2164-14-300

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  • Bcl11b/Ctip2 Controls the Differentiation of Vomeronasal Sensory Neurons in Mice Reviewed

    Takayuki Enomoto, Makoto Ohmoto, Tetsuo Iwata, Ayako Uno, Masato Saitou, Tatsuya Yamaguchi, Ryo Kominami, Ichiro Matsumoto, Junji Hirota

    JOURNAL OF NEUROSCIENCE   31 ( 28 )   10159 - 10173   2011.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1523/JNEUROSCI.1245-11.2011

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MISC

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Presentations

  • Genetic dissection of the class I odorant receptor gene cluster in mice

    Tetsuo Iwata, Sirapop Nithiuthai, Guo Xiao Peng, Hiro Kondo, Junji Hirota

    The 22nd International Symposium on Molecular and Neural mechanisms of Taste and Olfactory Perception (ISMNTOP)  2026.3 

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    Event date: 2026.2 - 2026.3

    Language:English   Presentation type:Oral presentation (general)  

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  • ancV1Rの欠損による鋤鼻感覚入力の減弱がオスマウスの行動に与える影響

    奥口開斗, 近藤宏, 岩田哲郎, 二階堂雅人, 廣田順二

    第59回日本味と匂学会  2025.9 

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    Event date: 2025.9

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  • Analysis of a novel cis-regulatory element for mouse class I odorant receptor genes

    Tetsuo Iwata, Guo Xiao Peng, Junji Hirota

    2025.9 

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    Event date: 2025.9

    Language:English   Presentation type:Poster presentation  

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  • フェロモン受容と母性攻撃行動における新規鋤鼻受容体候補分子ancV1Rの役割

    近藤宏, 岩田哲郎, 佐藤幸治, 鈴木彦有, 村田健, 東原和成, 二階堂雅人, 廣田順二

    第59回日本味と匂学会  2025.9 

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    Event date: 2025.9

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  • 新規鋤鼻受容体候補分子ancV1R の雌性行動における重要性

    近藤宏, 岩田哲郎, 鈴木彦有, 村田健, 東原和成, 二階堂雅人, 廣田順二

    日本味と匂学会第57回大会  2025.9 

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    Event date: 2025.9

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  • 嗅覚受容体遺伝子発現におけるSsbp2の機能解析

    町田夏芽, 白川大地, 小出裕太郎, 小澤悠太, 小林千鶴, 福嶋俊明, 岩田哲郎, 廣田順二

    第47回分子生物学会年会  2024.11 

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    Event date: 2024.11

    Language:Japanese   Presentation type:Poster presentation  

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  • Class I タイプに着目した嗅覚受容体遺伝子発現制御機構 Invited

    岩田哲郎

    日本味と匂学会第58回大会  2024.9 

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    Event date: 2024.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

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  • Functional analysis of a long range cis-regulatory element for class I odorant receptor genes

    Tetsuo Iwata, Satoshi Tomeoka, Junji Hirota

    The 19th International Symposium on Olfaction and Taste (ISOT2024)  2024.6 

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    Event date: 2024.6

    Language:English   Presentation type:Poster presentation  

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  • 新規鋤鼻受容体候補遺伝子ancV1R欠損オスマウスの表現型解析

    武田紗季, 近藤宏, 岩田哲郎, 二階堂雅人, 廣田順二

    日本農芸化学会2024年度大会  2024.3 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

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  • 嗅覚受容体遺伝子発現におけるSsbp2の機能解明

    町田夏芽, 白川大地, 小林千鶴, 福嶋俊明, 岩田哲郎, 廣田順二

    日本味と匂学会第57回大会  2023.9 

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    Event date: 2023.9

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  • 嗅覚受容体巨大遺伝子クラスターを制御する長距離シスエレメント Invited

    岩田哲郎, 新村芳人, 小林千鶴, 白川大地, 鈴木彦有, 榎本孝幸, 東原和成, 吉原良浩, 廣田順二

    日本遺伝学会第90回大会  2018.9 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

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  • Class I嗅覚受容体遺伝子クラスター部分欠失マウスの解析

    岩田哲郎, Nithiuthai Sirapo, 廣田順二

    日本味と匂学会第57回大会  2023.9 

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  • ヒトiPS細胞の分化誘導による嗅神経幹細胞の作製

    満留隼人, 白木伸明, 岩田哲郎, 廣田順二

    日本味と匂学会第57回大会  2023.9 

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  • 枯草菌ゲノムベクターを用いたヒトTCR遺伝子座の再構築

    諸角光祐, 岩田哲郎, 山崎憲政, 神沼修, 廣田順二

    日本農芸化学会2024年度大会  2024.3 

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    Language:Japanese   Presentation type:Oral presentation (general)  

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  • 母子間化学コミュニケーションを促進する羊水成分の同定と生理機能の解明

    久保田理子, 岩田哲郎, 宮崎雅雄, 廣田順二

    日本味と匂学会第55回大会  2021.9 

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  • 新規フェロモン受容体候補分子 ancV1R のフェロモン受容と性行動における役割

    近藤宏, 岩田哲郎, 村田健, 鈴木彦有, 東原和成, 二階堂雅人, 廣田順二

    日本味と匂学会第55回大会  2021.9 

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  • Molecular mechanisms underlying super-long-range gene regulation of a class I odorant receptor enhancer

    Sirapop Nithiuthai, Tetsuo Iwata, Junji Hirota

    2022.11 

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  • 嗅覚受容体遺伝子発現におけるSsbp2の機能解明

    町田夏芽, 白川大地, 小林千鶴, 福嶋俊明, 岩田哲郎, 廣田順二

    第45回分子生物学会年会  2022.12 

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  • 嗅神経発生最初期ニューロンの発生分化機構の解明

    内田樹菜, 岩田哲郎, 廣田順二

    第45回分子生物学会年会  2022.12 

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  • Class I 嗅覚受容体遺伝子の発現制御領域の機能解析

    岩田哲郎, 留岡諭志, 小林千鶴, 白川大地, 廣田順二

    日本味と匂学会第55回大会  2021.9 

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  • Molecular mechanism of class I odorant receptor gene expression Invited

    Tetsuo Iwata, Takayuki Enomoto, Junji Hirota

    2019.9 

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  • Olfactory system and the repatoire of odorant receptors

    Tetsuo Iwata

    2023.9 

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    Language:Japanese   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

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Awards

  • 日本味と匂学会研究奨励賞

    2024.9   日本味と匂学会  

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  • Seiichi Tejima Research Award

    2019.2   A long-range cis-regulatory element for class I odorant receptor genes.

    Tetsuo Iwata, Yoshihito Niimura, Chizuru Kobayashi, Daichi Shirakawa, Hikoyu Suzuki, Takayuki Enomoto, Kazushige Touhara, Yoshihiro Yoshihara, Junji Hirota

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  • JASTS Best Poster Award

    2017.9   The Japanese Association for the Study of Taste and Smell  

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  • Izumi Kamata Doctoral Thesis Award

    2015.3   Tokyo Institute of Technology  

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  • EPFL Dimitris N. Chorafas Foundation award

    2014.7  

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Research Projects

  • 雌特異的な胎生致死を示すマウスの原因解明とそのメカニズム

    2024.10 - 2029.3

    公益財団法人 武田科学振興財団  2024年度 ライフサイエンス研究助成 

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    Authorship:Principal investigator 

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  • ヒトT細胞受容体ゲノムをノックインした新しい免疫系ヒト化マウスの樹立

    Grant number:23K07134  2023.4 - 2026.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    山崎 憲政, 岩田 哲郎

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    Authorship:Coinvestigator(s) 

    Grant amount:\4550000 ( Direct Cost: \3500000 、 Indirect Cost:\1050000 )

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  • 雌の発生に必須な遺伝子群の同定と機能解析

    2023.4 - 2024.3

    公益財団法人 小柳財団  2023年度小柳財団研究助成金 

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  • 新規長距離作用性嗅覚受容体遺伝子エンハンサーの機能解析

    2022.12 - 2024.9

    公益財団法人内藤記念科学振興財団  第54回(2022年度)内藤記念科学奨励金・研究助成 

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  • The molecular basis of gene expression regulation by a super-long range cis-regulatory element

    Grant number:22K06426  2022.4 - 2025.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

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    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

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  • Genome structural and physiological functions of an odorant receptor subfamily forming a huge gene cluster

    2022.1 - 2023.12

    Yoshinori Ohsumi Fund  Yoshinori Ohsumi Fund for Fundamental Research 

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  • The regulatory mechanisms of a long-range cis-regulatory element for a large gene cluster

    Grant number:19K16255  2019.4 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists  Grant-in-Aid for Early-Career Scientists

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    Authorship:Principal investigator 

    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

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  • Studies on the cis-element for mouse class I odorant receptor genes

    Grant number:17K14932  2017.4 - 2020.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

    Iwata Tetsuo

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    Authorship:Principal investigator 

    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

    Individual olfactory sensory neurons express a single odorant receptor gene from either class I genes residing in a single cluster on a single chromosome or class II genes spread over multiple clusters on multiple chromosomes. In this study, we identify an enhancer element for mouse class I genes. The J element regulates most class I genes expression by exerting an effect over ~3 megabases within the whole cluster. Deletion of the trans J element increases the expression frequencies of class I genes from the intact J allele, indicating that the allelic exclusion of class I genes depends on the activity of the J element. Our data reveal a long-range cis-regulatory element that governs the singular class I gene expression and has been phylogenetically preserved to retain a single cluster organization of class I genes in mammals.

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  • 枯草菌ゲノムベクターによる新たなゲノム工学システムの確立

    Grant number:14J11456  2014.4 - 2016.3

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    岩田 哲郎

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    Grant amount:\2170000 ( Direct Cost: \1900000 、 Indirect Cost:\270000 )

    巨大DNA断片の遺伝子操作技術はゲノム機能解析に不可欠な基盤技術であり、ゲノム解読が進むにつれてますますその重要性が増している。Mbスケールの遺伝子操作が可能な枯草菌(BGM)ゲノムベクターに着目し、次世代のDNA改変システムの確立のため下記2つの研究を実施し、多様な遺伝子操作法やトランスジェニックマウスへの応用技術の整備、改良型BGMベクターの構築、学術研究への応用を達成した。本技術は、物質生産や人工ゲノム合成、トランスジェネシス、ゲノム機能解析など、遺伝子操作をおこなう産業・工学・学術のあらゆる分野への応用が期待できる。
    1.キシロース誘導カセットを用いてRecA誘導型枯草菌株(inducible recA expression BGM vector: iREX)を構築した。iREXにおけるRecAの発現はキシロースにより厳密に制御されており、誘導時にはこれまで通りプラスミドやBAC-DNAをクローニングできることを示した。キシロース非存在下では、既存のBGMベクターで見られていた培養中の相同組換えを抑えることでより安定にインサートを保持でき、従来のシステムでは構築が難しかった複数の類似配列(レポーター遺伝子等)を含むような複雑なトランスジーンにも応用できることを示した。
    2.BGMベクターの実用性を示すために、BACクローンの逆位・連結操作を駆使してマウス水棲型嗅覚受容体遺伝子ゲノム領域の再構築をおこない、Mbスケールの連結型トランスジーンの構築を試みた。252 kbまでは再構築できていたものの、サイズの大きなBAC-DNAのクローニングにおいて新たな課題が明らかになった。しかしながら別の発展課題において、BGMベクターでの遺伝子操作やトランスジェニックマウスの解析を駆使することにより、初めて水棲型嗅覚受容体遺伝子の発現制御領域の同定に成功した。

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Other

  • 動物実験にかかる教育訓練

    2024.4

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Teaching Experience

  • 生命理工学特別講義第四

    2024.12 Institution:東京科学大学

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  • 生命理工学基礎実験第三

    2021.4 Institution:東京工業大学

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Academic Activities

  • Chair, Young Scientist Group, The Japanese Association for the Study of Taste and Smell (JASTS)

    Role(s): Planning, management, etc.

    2025.11

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  • 日本味と匂学会 第57回大会組織委員

    Role(s): Planning, management, etc.

    大会長 廣田順二  2023.9

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    Type:Competition, symposium, etc. 

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  • JASTS young researcher comitte

    Role(s): Planning, management, etc.

    2021.11 - 2025.10

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