研究者業績

櫻井 建成

サクライ タツナリ  (Tatsunari Sakurai)

基本情報

所属
武蔵野大学 工学部 数理工学科 教授
学位
博士(工学)(1998年3月 山口大学)

研究者番号
60353322
J-GLOBAL ID
200901084069851832
researchmap会員ID
1000362262

研究キーワード

 2

論文

 37
  • Chika Okimura, Syu Akiyama, Yukinori Nishigami, Ryota Zaitsu, Tatsunari Sakurai, Yoshiaki Iwadate
    Cell Reports Physical Science 102429-102429 2025年2月  査読有り
  • Hitoshi Mahara, Yuki Kimura, P. Parmananda, Atsushi Nomura, Tohru Tsujikawa, Tatsunari Sakurai
    Physical Review E 110(5) 2024年11月  査読有り
    Pulse generation in a spatially extended system is studied numerically. Using an array of coupled excitable oscillators, pulse generation is achieved by introducing a parametric heterogeneity between the two partitions of the array. The profile of the propagating pulses can be regulated using the parameter mismatch between these two partitions. It is realized, using a simplified two linearly coupled model, that the coupling flux between the excitable elements plays a vital role in enabling the observed pulse propagation. Analytical treatment, involving linear stability analysis, validates the simulation results.
  • Hiroyuki Kitahata, Junji Taguchi, Masaharu Nagayama, Tatsunari Sakurai, Yumihiko Ikura, Atsushi Osa, Yutaka Sumino, Masanobu Tanaka, Etsuro Yokoyama, Hidetoshi Miike
    Journal of Physical Chemistry A 126(41) 7557 2022年10月20日  
    I n our original manuscript, the parameter values were incorrectly described in the caption of Figure 5. The parameters should be “au/a = 1 and av/a = 0.1” instead of “αu/α = αv/α = 0.1”. In addition, “au = av = 3.7” was incorrect, and it should be “au = 37 and av = 3.7”. The errors are typographical, and thus, these corrections do not affect the conclusions of this work.
  • Chika Okimura, Misaki Iwanaga, Tatsunari Sakurai, Tasuku Ueno, Yasuteru Urano, Yoshiaki Iwadate
    Proceedings of the National Academy of Sciences of the United States of America 119(18) e2119903119 2022年5月3日  査読有り
    Collective cell migration is seen in many developmental and pathological processes, such as morphogenesis, wound closure, and cancer metastasis. When a fish scale is detached and adhered to a substrate, epithelial keratocyte sheets crawl out from it, building a semicircular pattern. All the keratocytes at the leading edge of the sheet have a single lamellipodium, and are interconnected with each other via actomyosin cables. The leading edge of the sheet becomes gradually longer as it crawls out from the scale, regardless of the cell-to-cell connections. In this study, we found leading-edge elongation to be realized by the interruption of follower cells into the leading edge. The follower cell and the two adjacent leader cells are first connected by newly emerging actomyosin cables. Then, the contractile forces along the cables bring the follower cell forward to make it a leader cell. Finally, the original cables between the two leader cells are stretched to tear by the interruption and the lamellipodium extension from the new leader cell. This unique actomyosin-cable reconnection between a follower cell and adjacent leaders offers insights into the mechanisms of collective cell migration.
  • Yuki Koyano, Tatsunari Sakurai, Hiroyuki Kitahata
    PHYSICAL REVIEW E 96(3) 2017年9月  査読有り

MISC

 25

共同研究・競争的資金等の研究課題

 22