live-cell hybrid imaging of morphological dynamics of the plasma membrane

About This Project

Japan Grant Number
JP18KK0196 (JGN)
Funding Program
Grants-in-Aid for Scientific Research
Funding Organization
Japan Society for the Promotion of Science

Kakenhi Information

Project/Area Number
18KK0196
Research Category
Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
Allocation Type
  • Multi-year Fund
Review Section / Research Field
  • Medium-sized Section 43:Biology at molecular to cellular levels, and related fields
Research Institution
  • Kyoto University
Project Period (FY)
2018-10-09 〜 2022-03-31
Project Status
Completed
Budget Amount*help
17,940,000 Yen (Direct Cost: 13,800,000 Yen Indirect Cost: 4,140,000 Yen)

Research Abstract

We established a hybrid live-cell imaging system by combining high-speed atomic force microscopy (HS-AFM) and fluorescence microscopy and revealed the detailed morphological changes in the plasma membrane and protein localizations during the clathrin-mediated endocytosis. CIP4, which has membrane-deforming activity, is recruited to the plasma membrane via small G protein Cdc42, and promotes the assembly of actin, which induces a small membrane bulge near the clathrin pit. We also established a hybrid microscope system by combining HS-AFM and highly inclined and laminated optical sheet (HILO) illumination to overcome the limitation of light diffraction, and successfully visualized a single molecule in the plasma membrane by super-resolution radial fluctuation.

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