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Studying Cell Death Initiation Using a Digital Microscope
Published on: November 10, 2023
Cell volume changes during apoptosis monitored in real time using digital holographic microscopy.
Alexander Khmaladze1, Rebecca L Matz, Tamir Epstein
1Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA. akhmalad@umich.edu
Journal of Structural Biology
|April 3, 2012
Summary
Digital holographic microscopy accurately measures real-time cellular volume changes during apoptosis. This noninvasive technique reveals significant cell shrinkage, consistent with other methods, offering high temporal resolution.
Area of Science:
- Cell Biology
- Biophysics
- Microscopy Techniques
Background:
- Cellular volume dynamics are critical for normal cell function and disease progression.
- Accurate, real-time measurement of cell volumes is essential for biological research.
- Existing methods for cell volume measurement have limitations.
Purpose of the Study:
- To monitor cell volume changes in real time during apoptosis.
- To evaluate digital holographic microscopy (DHM) for cell volume analysis.
- To compare DHM results with established techniques.
Main Methods:
- Utilized digital holographic microscopy (DHM) to observe KB cells.
- Deduced cell volume changes from the phase shift of transmitted light.
- Induced apoptosis using 1 μM staurosporine for 4 hours.
Main Results:
- DHM successfully monitored real-time cell volume changes during apoptosis.
- KB cell volumes decreased by approximately 50-60% after staurosporine treatment.
- Results align with previous findings from electronic cell sizing and atomic force microscopy.
Conclusions:
- Digital holographic microscopy provides a noninvasive, high-resolution method for real-time cell volume measurement.
- DHM enables simultaneous analysis of individual and population cell volume dynamics.
- This technique offers significant advantages for studying time-dependent cellular processes.
