High-speed atomic force microscopy combined with inverted optical microscopy for studying cellular events

Yuki Suzuki, Nobuaki Sakai, Aiko Yoshida, Yoshitsugu Uekusa, Akira Yagi, Yuka Imaoka, Shuichi Ito, Koichi Karaki, Kunio Takeyasu

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

A hybrid atomic force microscopy (AFM)-optical fluorescence microscopy is a powerful tool for investigating cellular morphologies and events. However, the slow data acquisition rates of the conventional AFM unit of the hybrid system limit the visualization of structural changes during cellular events. Therefore, high-speed AFM units equipped with an optical/fluorescence detection device have been a long-standing wish. Here we describe the implementation of high-speed AFM coupled with an optical fluorescence microscope. This was accomplished by developing a tip-scanning system, instead of a sample-scanning system, which operates on an inverted optical microscope. This novel device enabled the acquisition of high-speed AFM images of morphological changes in individual cells. Using this instrument, we conducted structural studies of living HeLa and 3T3 fibroblast cell surfaces. The improved time resolution allowed us to image dynamic cellular events.

Original languageEnglish
Article number2131
JournalScientific reports
Volume3
DOIs
Publication statusPublished - 2013 Aug 21
Externally publishedYes

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'High-speed atomic force microscopy combined with inverted optical microscopy for studying cellular events'. Together they form a unique fingerprint.

Cite this