Cellular message movement captured on video
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These time-lapse images of a bovine aortic endothelial cell reveal the motion toward the cell's nucleus of a message-carrying protein called paxillin (orange) in tandem with actin filaments (green). Credit: UC San Diego
Scientists have captured on video the intracellular version of a postal delivery service. Reporting in the journal Biochemical and Biophysical Research Communications (BBRC), bioengineering researchers at UC San Diego published videos of a key message-carrying protein called paxillin moving abruptly from hubs of communication and transportation activity on the cell surface toward the nucleus. Paxillin was labeled with a red fluorescence marker to make it stand out in live cells.
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