Digital holographic microscopy for the three-dimensional dynamic analysis of in vitro cancer cell migration.
Cancer cell motility and invasion are critical targets for anticancer therapeutics. Whereas in vitro models could be designed for rapid screening with a view to investigate these targets, careful consideration must be given to the construction of appropriate model systems. Most investigations focus on two-dimensional (2-D) assays despite the fact that increasing evidence suggests that migration across rigid and planar substrates fails to recapitulate in vivo behavior. In contrast, few systems enable three-dimensional (3-D) cell migration to be quantitatively analyzed. We previously developed a digital holographic microscope (DHM) working in transmission with a partially spatial coherence source. This configuration avoids the noise artifacts of laser illumination and makes possible the direct recording of information on the 3-D structure of samples consisting of multiple objects embedded in scattering media, such as cell cultures in matrix gels. The software driving our DHM system is equipped with a time-lapse ability that enables the 3-D trajectories of living cells to be reconstituted and quantitatively analyzed.
Dubois
Frank
F
Department of Physical Chemistry, Microgravity Research Center, Faculty of Applied Sciences, Université Libre de Bruxelles, Brussels, Belgium 1050.
Yourassowsky
Catherine
C
Monnom
Olivier
O
Legros
Jean-Claude
JC
Debeir
Olivier
O
Van Ham
Philippe
P
Kiss
Robert
R
Decaestecker
Christine
C
D002452:Cell Count / Q000295:instrumentation* / Q000379:methods; D018929:Cell Culture Techniques / Q000295:instrumentation* / Q000379:methods; D045744:Cell Line, Tumor; D002465:Cell Movement; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005354:Fibrosarcoma / Q000473:pathology*; D006696:Holography / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D008853:Microscopy / Q000295:instrumentation* / Q000379:methods; D009361:Neoplasm Invasiveness; D010363:Pattern Recognition, Automated / Q000379:methods*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*