Key result
Actin disruption reveals dynein-dependent microtubule sliding and mitotic spindle oscillation do not require filamentous actin.
Why the study?
The role of filamentous actin in dynein-dependent mitotic spindle movements in budding yeast was unclear and needed to be tested.
Population
Synchronized cell populations and individual living Saccharomyces cerevisiae cells
Comparison
Disruption of actin cytoskeleton using mutations and latrunculin A versus cells lacking dynein function and untreated cells
Design
Preclinical experimental study with cell synchronization and live cell imaging
Authors
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Actin’s role in yeast spindle positioning remains hypothesis-generating; further experiments needed to define phase-specific contributions.
Filamentous actin is not required for dynein-dependent movements of the mitotic spindle in budding yeast.
Heil‐Chapdelaine et al. (2000) studied Mitotic spindle positioning in budding yeast. Disruption of actin cytoskeleton (mutations and latrunculin A) vs. Untreated/wild-type cells was evaluated on Nuclear segregation and spindle movements. Disruption of the actin cytoskeleton revealed that dynein-dependent sliding of astral microtubules and oscillation of the elongating mitotic spindle in the neck do not require filamentous actin.
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