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Shunpei Okada
Researcher at University of Tokyo
Publications - 10
Citations - 358
Shunpei Okada is an academic researcher from University of Tokyo. The author has contributed to research in topics: RNA & RNA editing. The author has an hindex of 7, co-authored 8 publications receiving 235 citations. Previous affiliations of Shunpei Okada include Tokyo University of Science.
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Journal ArticleDOI
A biochemical landscape of A-to-I RNA editing in the human brain transcriptome
Masayuki Sakurai,Hiroki R. Ueda,Takanori Yano,Shunpei Okada,Hideki Terajima,Toutai Mitsuyama,Atsushi Toyoda,Asao Fujiyama,Hitomi Kawabata,Tsutomu Suzuki +9 more
TL;DR: Gene ontology analysis revealed that these edited mRNAs are associated with transcription, energy metabolism, and neurological disorders, providing new insights into various aspects of human brain functions.
Journal ArticleDOI
Complete chemical structures of human mitochondrial tRNAs
Takeo Suzuki,Yuka Yashiro,Ittoku Kikuchi,Yuma Ishigami,Hironori Saito,Ikuya Matsuzawa,Shunpei Okada,Shunpei Okada,Mari Mito,Shintaro Iwasaki,Ding Ma,Xuewei Zhao,Kana Asano,Huan Lin,Huan Lin,Yohei Kirino,Yuriko Sakaguchi,Tsutomu Suzuki +17 more
TL;DR: A comprehensive analysis of post-transcriptional modifications of all human mt-tRNAs, including 14 previously-uncharacterized species, provides insight into the molecular mechanisms underlying the decoding system and could help to elucidate the molecular pathogenesis of human mitochondrial diseases caused by aberrant tRNA modifications.
Journal ArticleDOI
Transcriptome-wide identification of adenosine-to-inosine editing using the ICE-seq method
TL;DR: A biochemical method to identify inosines called inosine chemical erasing (ICE), which is based on cyanoethylation combined with reverse transcription, was developed and subsequently combined with deep sequencing (ICE-seq) for the reliable identification of transcriptome-wide A-to-I editing sites.
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The RNA-binding protein QKI-7 recruits the poly(A) polymerase GLD-2 for 3’ adenylation and selective stabilization of microRNA-122
Hiroaki Hojo,Yuka Yashiro,Yuta Noda,Koichi Ogami,Ryota Yamagishi,Shunpei Okada,Shin-ichi Hoshino,Tsutomu Suzuki +7 more
TL;DR: It is shown that QKI7 KH domain-containing RNA binding (QKI-7), one of three isoforms of the QKI proteins, which are members of the signal transduction and activation of RNA (STAR) family of RNA-binding proteins, is involved in miR-122 stabilization.
Journal ArticleDOI
Transcriptome-wide identification of A-to-I RNA editing sites using ICE-seq
TL;DR: This work has established a biochemical method called inosine chemical erasing sequencing (ICE-seq) that enables unbiased and reliable identification of A-to-I RNA editing sites throughout the transcriptome and describes its updated protocol in the human transcriptome.