九州大学-研究者情報 [水野大介 (教授) 理学研究院物理学部門]

Katsuhiro Umeda, Kenji Nishizawa, Wataru Nagao, Shono Inokuchi, Yujiro Sugino, Hiroyuki Ebata, Daisuke Mizuno, Activity-dependent glassy cell mechanics II: Nonthermal fluctuations under metabolic activity, Biophysical Journal, 10.1016/j.bpj.2023.10.018, 122, 22, 4395-4413, 2023.11.

H. Ebata, K. Umeda, K. Nishizawa, W. Nagao, S. Inokuchi, Y. Sugino, T. Miyamoto, and D. Mizuno, Activity-dependent glassy cell mechanics Ⅰ:
Mechanical properties measured with active microrheology
, Biophysical Journal, 10.1016/j.bpj.2023.04.011, 122, 10, 1781-1793, 2023.06, Active microrheology was conducted in living cells by applying an optical-trapping force to vigorously-fluctuating tracer beads with feedback-tracking technology. The complex shear modulus G(\omega)=G'(\omega)-iG''(\omega) was measured in HeLa cells in an epithelial-like confluent monolayer. We found that G(\omega)\propto(-i\omega)^\frac{1}{2} over a wide range of frequencies (1 Hz


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