Key result
Exposure to blue light (<488 nm) rapidly inactivates the inhibitory action of blebbistatin on myosin motility and reverses its inhibition of cytokinetic ring contraction in cells.
Population
In vitro myosin motility assay and cells
Design
Preclinical
Authors
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Requires light controls in blebbistatin experiments to prevent unintended reversal; leaves open safe use for localized myosin modulation in cardiovascular models.
Blebbistatin is photoinactivated by blue light, which can be used to locally reverse its effects but may produce damaging free radicals.
Sakamoto et al. (2004) studied this question. Blebbistatin and blue light exposure (<488 nm) was evaluated on Inhibitory action of blebbistatin on in vitro motility of myosin and cytokinetic ring contraction. Exposure to blue light (<488 nm) rapidly inactivates the inhibitory action of blebbistatin on myosin motility and reverses its inhibition of cytokinetic ring contraction in cells.