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IKI Taichiro
井木 太一郎
IKI Taichiro
井木 太一郎
Graduate School of Frontier Biosciences Department of Frontier Biosciences,Associate Professor

keyword Germ cell,spermatogenesis,short interfering RNA,PIWI-interacting RNA,microRNA,Drosophila,Plants,non-protein-coding RNA,Molecular chaperone,Gene regulation

Research History 5

  1. 2021/07 - Present
    Osaka University Graduate School of Frontier Biosciences Associate Professor

  2. 2016/02 - 2021/06
    Osaka University Graduate School of Frontier Biosciences Assistant Professor

  3. 2012/02 - 2016/01
    Eidgenössische Technische Hochschule (ETH) Zürich

  4. 2013/03 - 2015/02
    Marie Curie International Incoming Fellowship (IIF) Fellow

  5. 2008/04 - 2012/01
    独立行政法人 農業生物資源研究所 植物・微生物間相互作用研究ユニット

Education 2

  1. 東京大学大学院

    2003/04 - 2008/03

  2. The University of Tokyo

    1999/04 - 2003/03

Professional Memberships 3

  1. RNA society

  2. 分子生物学会

  3. 日本RNA学会

Research Areas 3

  1. Life sciences / Developmental biology /

  2. Life sciences / Molecular biology / RNA biology, Gene regulation, Molecular biology, Biochemistry

  3. Life sciences / Plants: molecular biology and physiology / RNA biology, Gene regulation, Molecular biology, Biochemistry

Papers 20

  1. Paralog-dependent Specialization of Paf1C subunit, Ctr9, for Sex Chromosome Gene Regulation and Male Germline Differentiation in Drosophila

    Toshie Kai, Jinglan Zheng, Taichiro Iki

    Genes to Cells 2024/04/26 Research paper (scientific journal)

  2. miRNA/siRNA-directed pathway to produce noncoding piRNAs from endogenous protein-coding regions ensures Drosophila spermatogenesis

    Taichiro Iki, Shinichi Kawaguchi, Toshie Kai

    Science Advances 2023/07/21 Research paper (scientific journal)

  3. Modulation of Ago2 Loading by Cyclophilin 40 Endows a Unique Repertoire of Functional miRNAs during Sperm Maturation in Drosophila.

    Taichiro Iki, Moe Takami, Toshie Kai

    Cell reports Vol. 33 No. 6 p. 108380-108380 2020/11/10 Research paper (scientific journal)

  4. Structural Flexibility Enables Alternative Maturation, ARGONAUTE Sorting and Activities of miR168, a Global Gene Silencing Regulator in Plants.

    Taichiro Iki, Antoine Cléry, Nicolas G Bologna, Alexis Sarazin, Christopher A Brosnan, Nathan Pumplin, Frédéric H T Allain, Olivier Voinnet

    Molecular plant Vol. 11 No. 8 p. 1008-1023 2018/08/06 Research paper (scientific journal)

  5. Biochemical and genetic functional dissection of the P38 viral suppressor of RNA silencing.

    Taichiro Iki, Marie-Aude Tschopp, Olivier Voinnet

    RNA (New York, N.Y.) Vol. 23 No. 5 p. 639-654 2017/05 Research paper (scientific journal)

  6. Messages on small RNA duplexes in plants.

    Taichiro Iki

    Journal of plant research Vol. 130 No. 1 p. 7-16 2017/01 Research paper (scientific journal)

  7. Cyclophilin 40 facilitates HSP90-mediated RISC assembly in plants.

    Taichiro Iki, Manabu Yoshikawa, Tetsuo Meshi, Masayuki Ishikawa

    The EMBO journal Vol. 31 No. 2 p. 267-78 2012/01/18 Research paper (scientific journal)

  8. In vitro assembly of plant RNA-induced silencing complexes facilitated by molecular chaperone HSP90.

    Taichiro Iki, Manabu Yoshikawa, Masaki Nishikiori, Mauren C Jaudal, Eiko Matsumoto-Yokoyama, Ichiro Mitsuhara, Tetsuo Meshi, Masayuki Ishikawa

    Molecular cell Vol. 39 No. 2 p. 282-91 2010/07/30 Research paper (scientific journal)

  9. Tejas functions as a core component in nuage assembly and precursor processing in Drosophila piRNA biogenesis

    Yuxuan Lin, Ritsuko Suyama, Shinichi Kawaguchi, Taichiro Iki, Toshie Kai

    Journal of Cell Biology 2023/10/02 Research paper (scientific journal)

  10. The Tudor Domain-Containing Protein, Kotsubu (CG9925), Localizes to the Nuage and Functions in piRNA Biogenesis in D. melanogaster

    Lin-Xenia Lim, Wakana Isshiki, Taichiro Iki, Shinichi Kawaguchi, Toshie Kai

    Frontiers in Molecular Biosciences Vol. 9 p. 818302-818302 2022/03/29 Research paper (scientific journal)

    Publisher: Frontiers Media SA
  11. A Suppressor Screen for AGO1 Degradation by the Viral F-Box P0 Protein Uncovers a Role for AGO DUF1785 in sRNA Duplex Unwinding.

    Benoît Derrien, Marion Clavel, Nicolas Baumberger, Taichiro Iki, Alexis Sarazin, Thibaut Hacquard, María Rosa Ponce, Véronique Ziegler-Graff, Hervé Vaucheret, José Luis Micol, Olivier Voinnet, Pascal Genschik

    The Plant cell Vol. 30 No. 6 p. 1353-1374 2018/06 Research paper (scientific journal)

  12. A complex of Arabidopsis DRB proteins can impair dsRNA processing.

    Marie-Aude Tschopp, Taichiro Iki, Christopher A Brosnan, Pauline E Jullien, Nathan Pumplin

    RNA (New York, N.Y.) Vol. 23 No. 5 p. 782-797 2017/05 Research paper (scientific journal)

  13. In Vitro Formation of Plant RNA-Induced Silencing Complexes Using an Extract of Evacuolated Tobacco Protoplasts.

    Taichiro Iki, Masayuki Ishikawa, Manabu Yoshikawa

    Methods in molecular biology (Clifton, N.J.) Vol. 1640 p. 39-53 2017 Research paper (scientific journal)

  14. A Short Open Reading Frame Encompassing the MicroRNA173 Target Site Plays a Role in trans-Acting Small Interfering RNA Biogenesis.

    Manabu Yoshikawa, Taichiro Iki, Hisataka Numa, Kyoko Miyashita, Tetsuo Meshi, Masayuki Ishikawa

    Plant physiology Vol. 171 No. 1 p. 359-68 2016/05 Research paper (scientific journal)

  15. 3' fragment of miR173-programmed RISC-cleaved RNA is protected from degradation in a complex with RISC and SGS3.

    Manabu Yoshikawa, Taichiro Iki, Yasuhiro Tsutsui, Kyoko Miyashita, R Scott Poethig, Yoshiki Habu, Masayuki Ishikawa

    Proceedings of the National Academy of Sciences of the United States of America Vol. 110 No. 10 p. 4117-22 2013/03/05 Research paper (scientific journal)

  16. Cytoplasmic assembly and selective nuclear import of Arabidopsis Argonaute4/siRNA complexes.

    Ruiqiang Ye, Wei Wang, Taichiro Iki, Chang Liu, Yang Wu, Masayuki Ishikawa, Xueping Zhou, Yijun Qi

    Molecular cell Vol. 46 No. 6 p. 859-70 2012/06/29 Research paper (scientific journal)

  17. An outer membrane autotransporter, AoaA, of Azorhizobium caulinodans is required for sustaining high N2-fixing activity of stem nodules.

    Tadahiro Suzuki, Toshihiro Aono, Chi-Te Liu, Shino Suzuki, Taichiro Iki, Keisuke Yokota, Hiroshi Oyaizu

    FEMS microbiology letters Vol. 285 No. 1 p. 16-24 2008/08 Research paper (scientific journal)

  18. Rhizobial factors required for stem nodule maturation and maintenance in Sesbania rostrata-Azorhizobium caulinodans ORS571 symbiosis.

    Shino Suzuki, Toshihiro Aono, Kyung-Bum Lee, Tadahiro Suzuki, Chi-Te Liu, Hiroki Miwa, Seiji Wakao, Taichiro Iki, Hiroshi Oyaizu

    Applied and environmental microbiology Vol. 73 No. 20 p. 6650-9 2007/10 Research paper (scientific journal)

  19. Evidence for functional differentiation of duplicated nifH genes in Azorhizobium caulinodans.

    Taichiro Iki, Toshihiro Aono, Hiroshi Oyaizu

    FEMS microbiology letters Vol. 274 No. 2 p. 173-9 2007/09 Research paper (scientific journal)

  20. Isolation and differential expression of β-1,3-glucanase messenger RNAs, SrGLU3 and SrGLU4, following inoculation of Sesbania rostrata.

    Chi-Te Liu, Toshihiro Aono, Misako Kinoshita, Hiroki Miwa, Taichiro Iki, Kyung-Bum Lee, Hiroshi Oyaizu

    Functional plant biology : FPB Vol. 33 No. 11 p. 983-990 2006/11 Research paper (scientific journal)

Misc. 1

  1. 植物におけるRNA‐induced silencing complexの無細胞形成系の確立

    井木太一郎, 吉川学, モーレン ジャウダル, 横山英子, 横山英子, 錦織雅樹, 光原一朗, 飯哲夫, 石川雅之

    日本植物生理学会年会要旨集 Vol. 51st 2010/03/12

Presentations 6

  1. Proximity proteome of PIWI proteins reveals regulatory mechanisms for telomeric transposons in germline cess

    Taichiro Iki

    2025/09/02

  2. Protein coding-sequence (CDS)-derived piRNA ensures spermatogenesis in Drosophila

    RIKEN_Sympo 2023 & 2nd Kansai RNA club 2023/12/05

  3. タンパク質コード領域の非コード化を誘導する精巣の経路

    井木太一郎

    徳島大学先端酵素学研究所における講演 2022/05/17

  4. Hsp90 cochaperone-mediated ARGONAUTE regulation during Drosophila spermatogenesis

    Taichiro Iki

    baRNAclub 2019/07

  5. Structural Flexibility of Double-stranded Precursors Confers Functional Versatility to miR168, a Global Regulator of Gene Silencing in Plants

    Taichiro Iki

    The 20th Annual Meeting of the RNA Society of Japan 2018

  6. Structural flexibility of miRNA duplex, the effect on the production, loading, and activity in plants

    Taichiro Iki

    The 79th Meeting of the Botanical Society of Japan 2015

Social Activities 1

  • マイクロ流路内核酸増幅反応に関する相談

    2022/02/01 - Present

Academic Activities 4

  1. Frontiers in Molecular Biosciences, RNA networks and Biology

    2023 - Present

  2. Frontiers in Molecular Biosciences 特集号「Novel insights in the biogenesis of small regulatory RNAs」編纂

    Daniel Cifuentes, Taichiro Iki, Simon Moxon

    2021 - 2022

  3. 第2回関西RNAクラブ

    2023/12/05 -

  4. 大阪大学先導的学際研究機構RNAフロンティアサイエンス部門2023年若手交流会

    2023/08/17 -

Institutional Repository 1

Content Published in the University of Osaka Institutional Repository (OUKA)
  1. miRNA/siRNA-directed pathway to produce noncoding piRNAs from endogenous protein-coding regions ensures Drosophila spermatogenesis

    Iki Taichiro, Kawaguchi Shinichi, Kai Toshie

    Science Advances Vol. 9 No. 29 2023/07/21