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Live cell interferometry reveals cellular dynamism during force propagation.


ABSTRACT: Cancer and many other diseases are characterized by changes in cell morphology, motion, and mechanical rigidity. However, in live cell cytology, stimulus-induced morphologic changes typically take 10-30 min to detect. Here, we employ live-cell interferometry (LCI) to visualize the rapid response of a whole cell to mechanical stimulation, on a time scale of seconds, and we detect cytoskeletal remodeling behavior within 200 s. This behavior involved small, rapid changes in cell content and miniscule changes in shape; it would be difficult to detect with conventional or phase contrast microscopy alone and is beyond the dynamic capability of AFM. We demonstrate that LCI provides a rapid, quantitative reconstruction of the cell body with no labeling. This is an advantage over traditional microscopy and flow cytometry, which require cell surface tagging and/or destructive cell fixation for labeling.

SUBMITTER: Reed J 

PROVIDER: S-EPMC2733939 | biostudies-literature | 2008 May

REPOSITORIES: biostudies-literature

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Live cell interferometry reveals cellular dynamism during force propagation.

Reed Jason J   Troke Joshua J JJ   Schmit Joanna J   Han Sen S   Teitell Michael A MA   Gimzewski James K JK  

ACS nano 20080501 5


Cancer and many other diseases are characterized by changes in cell morphology, motion, and mechanical rigidity. However, in live cell cytology, stimulus-induced morphologic changes typically take 10-30 min to detect. Here, we employ live-cell interferometry (LCI) to visualize the rapid response of a whole cell to mechanical stimulation, on a time scale of seconds, and we detect cytoskeletal remodeling behavior within 200 s. This behavior involved small, rapid changes in cell content and miniscu  ...[more]

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