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KŘÍŽOVÁ, A. ČOLLÁKOVÁ, J. DOSTÁL, Z. KVASNICA, L. UHLÍŘOVÁ, H. ZIKMUND, T. VESELÝ, P. CHMELÍK, R.
Original Title
Dynamic phase differences based on quantitative phase imaging for the objective evaluation of cell behavior
Type
journal article in Web of Science
Language
English
Original Abstract
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
Keywords
dynamic phase differences; holographic microscopy; live cell behavior evaluation; osmotic challenge; quantitative phase imaging
Authors
KŘÍŽOVÁ, A.; ČOLLÁKOVÁ, J.; DOSTÁL, Z.; KVASNICA, L.; UHLÍŘOVÁ, H.; ZIKMUND, T.; VESELÝ, P.; CHMELÍK, R.
RIV year
2015
Released
1. 11. 2015
ISBN
1083-3668
Periodical
JOURNAL OF BIOMEDICAL OPTICS
Year of study
20
Number
11
State
United States of America
Pages from
111214-1
Pages to
111214-8
Pages count
8