Author

Kaoru Usui

Institute of Medical Science, The University of Tokyo

Listed by name: these papers carry no ORCID for this author, so different people with the same name may be mixed together.

Biology Disciplines

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Microbiology· 2

Signature Assays, Organisms & Methods

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Approach:experimental assay· 2 Research Focus:host-pathogen & immune response· 2 Organism:human· 2 Assay:bulk RNA-seq· 1

Frequent Co-Authors

Jumpei ItoiD· 2 shared Kei SatoiD· 2 shared Keiya Uriu· 2 shared Masumi TsudaiD· 2 shared Shigeru FujitaiD· 2 shared Shinya TanakaiD· 2 shared Akatsuki SaitoiD· 1 shared Akifumi Takaori‐KondoiD· 1 shared

Activity by Year

2025-2026 · peak 1/yr

Co-Author Collaboration Network

10 top collaborators · 45 mutual co-author links

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2 shared papersMicrobiology

Jumpei ItoORCID

Mutual co-authors in cluster

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2 papers

Recent·Most cited

Experimental SARS-CoV-2 infection using horseshoe bats

Kaoru Usui, Masumi Tsuda, Keiya Uriu, Shigeru Fujita, Yukie Kashima, Yutaka Suzuki, Lei Wang, Shinya Tanaka, Jumpei Ito, Kei Sato

This study experimentally infects horseshoe bats with SARS-CoV-2, showing low-level persistent viral replication without disease, and identifies host mechanisms that enable viral coexistence.

bioRxiv · Mar 25, 2026 · PreprintMicrobiology

A non-spike nucleocapsid R204P mutation in SARS-CoV-2 Omicron XEC enhances inflammation and pathogenicity

Shuhei Tsujino, Masumi Tsuda, Sayaka Deguchi, Jumpei Ito, Taha Y. Taha, Hesham Nasser, Lei Wang, Julia Rosecrans, Rigel Suzuki, Saori Suzuki, Kumiko Yoshimatsu, Mélanie Ott, Terumasa Ikeda, Kei Sato, Kazuo Takayama, , Miki Kawano

This study identifies the non-spike R204P mutation in the SARS-CoV-2 Omicron XEC variant as a driver of increased inflammation and pathogenicity through NF-κB activation.

Nature Communications · Dec 14, 2025Peer-reviewedMicrobiology