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Analysis of microtubule dynamic instability using a plus-end growth marker.

ABSTRACT: Regulation of microtubule dynamics is essential for many cell biological processes and is likely to be variable between different subcellular regions. We describe a computational approach to analyze microtubule dynamics by detecting growing microtubule plus ends. Our algorithm tracked all EB1-EGFP comets visible in an image time-lapse sequence allowing the detection of spatial patterns of microtubule dynamics. We introduce spatiotemporal clustering of EB1-EGFP growth tracks to infer microtubule behaviors during phases of pause and shortening. We validated the algorithm by comparing the results to data for manually tracked, homogeneously labeled microtubules and by analyzing the effects of well-characterized inhibitors of microtubule polymerization dynamics. We used our method to analyze spatial variations of intracellular microtubule dynamics in migrating epithelial cells.

SUBMITTER: Matov A

PROVIDER: S-EPMC3032800 | biostudies-literature | 2010 Sep

REPOSITORIES: biostudies-literature

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Analysis of microtubule dynamic instability using a plus-end growth marker.

Matov Alexandre A Applegate Kathryn K Kumar Praveen P Thoma Claudio C Krek Wilhelm W Danuser Gaudenz G Wittmann Torsten T

Nature methods 20100822 9

Regulation of microtubule dynamics is essential for many cell biological processes and is likely to be variable between different subcellular regions. We describe a computational approach to analyze microtubule dynamics by detecting growing microtubule plus ends. Our algorithm tracked all EB1-EGFP comets visible in an image time-lapse sequence allowing the detection of spatial patterns of microtubule dynamics. We introduce spatiotemporal clustering of EB1-EGFP growth tracks to infer microtubule ...[more]

PMID: 20729842

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