Abstract
Cells exhibit transient nuclear envelope ruptures during interphase, but the responsible biophysical processes remain unclear. In this issue, Hatch and Hetzer (2016. J. Cell Biol. http://dx.doi.org/10.1083/jcb.201603053) show that actin fibers constrict the nucleus, causing chromatin protrusions and nuclear membrane ruptures at sites with nuclear lamina defects.
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