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Journal Article
Research Support, Non-U.S. Gov't
MCF7 microtubules: Cancer microtubules with relatively slow and stable dynamic in vitro.
Biochemical and Biophysical Research Communications 2017 March 5
There is known to be significant diversity of β-tubulin isoforms in cells. However, whether the functions of microtubules that are polymerized from different distributions of beta isotypes become distinct from one another are still being explored. Of particular interest, recent studies have identified the role that different beta tubulin isotypes carry in regulating the functions of some of the molecular motors along MCF7, or breast cancer, microtubules. That being said, how the specific distribution of beta tubulin isotypes impacts the MCF7 microtubules' dynamic is not well understood. The current study was initiated to directly quantify the in vitro dynamic and polymerization parameters of single MCF7 microtubules and then compare them with those obtained from neuronal microtubules polymerized from porcine brain tubulin. Surprisingly, unlike porcine brain microtubules, this type of cancer microtubule showed a relatively stable and slow dynamic. The comparison between the subsequently fast and unstable dynamic of porcine brain microtubules with the significantly slow and relatively stable dynamic of MCF7 microtubules suggests that beta tubulin isotypes may not only influence the microtubule based functionalities of some molecular motors, but also may change the microtubule's intrinsic dynamic.
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