Localization analysis of intercellular materials of living diatom cells studied by tomographic phase microscopy

Ryo Hamano, Shigeki Mayama, Kazuo Umemura

研究成果: Article査読

抄録

We demonstrated tomographic phase microscopy (TPM) of living diatoms in liquid in order to quantitatively analyze localization of cell components of symmetric shape cells. One TPM image includes several millions of pixel data of three-dimensional optical information such as refractive index (RI) values of cell components. In this work, the obtained TPM data of living cells were analyzed using X-Y cross sections to visualize the localization of cell components. Distribution of RI values at the cell surfaces and inside the cells were quantified. The results showed that the RI values were slightly lower at the cell center (RI ∼1.400) than the cell boundary (RI ∼1.420). RI values were fluctuated according to the depth measured from the cell surface also. Furthermore, statistical analysis by root mean square and Moran's I methods revealed unique localization of RI values for several cells among 25 individuals. In addition, the volumes of the cells estimated using TPM data corresponded to the cell volumes obtained via scanning electron microscopy. Our work proposed an effective procedure to quantitatively/statistically investigate intracellular materials of living cells based on physical information of TPM data.

本文言語English
論文番号133701
ジャーナルApplied Physics Letters
120
13
DOI
出版ステータスPublished - 28 3月 2022

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