Dynamic phase differences based on quantitative phase imaging for the objective evaluation of cell behavior

被引：7

作者：

Krizova, Aneta ^{[1
,2
]}

Collakova, Jana ^{[1
,2
]}

Dostal, Zbynek ^{[1
,2
]}

Kvasnica, Lukas ^{[1
]}

Uhlirova, Hana ^{[3
]}

Zikmund, Tomas ^{[1
,2
]}

Vesely, Pavel ^{[2
]}

Chmelik, Radim ^{[1
,2
]}

机构：

[1] Brno Univ Technol, Fac Mech Engn, Inst Engn Phys, Tech 2896 2, Brno 61600, Czech Republic

[2] Brno Univ Technol, CEITEC Cent European Inst Technol, Tech 3058 10, Brno 61600, Czech Republic

[3] Univ Calif San Diego, La Jolla, CA 92093 USA

来源：

JOURNAL OF BIOMEDICAL OPTICS | 2015年 / 20卷 / 11期

关键词：

holographic microscopy; quantitative phase imaging; live cell behavior evaluation; dynamic phase differences; osmotic challenge; DIGITAL HOLOGRAPHIC MICROSCOPY; TUMOR-CELLS; MORPHOMETRY;

D O I：

10.1117/1.JBO.20.11.111214

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Quantitative phase imaging (QPI) brought innovation to noninvasive observation of live cell dynamics seen as cell behavior. Unlike the Zernike phase contrast or differential interference contrast, QPI provides quantitative information about cell dry mass distribution. We used such data for objective evaluation of live cell behavioral dynamics by the advanced method of dynamic phase differences (DPDs). The DPDs method is considered a rational instrument offered by QPI. By subtracting the antecedent from the subsequent image in a time-lapse series, only the changes in mass distribution in the cell are detected. The result is either visualized as a two-dimensional color-coded projection of these two states of the cell or as a time dependence of changes quantified in picograms. Then in a series of time-lapse recordings, the chain of cell mass distribution changes that would otherwise escape attention is revealed. Consequently, new salient features of live cell behavior should emerge. Construction of the DPDs method and results exhibiting the approach are presented. Advantage of the DPDs application is demonstrated on cells exposed to an osmotic challenge. For time-lapse acquisition of quantitative phase images, the recently developed coherence-controlled holographic microscope was employed. (C) 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：8