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2017 ; 8
(3
): 287-300
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Dynamic regulation of nuclear architecture and mechanics-a rheostatic role for
the nucleus in tailoring cellular mechanosensitivity
#MMPMID28152338
Thorpe SD
; Lee DA
Nucleus
2017[May]; 8
(3
): 287-300
PMID28152338
show ga
Nuclear architecture, a function of both chromatin and nucleoskeleton structure,
is known to change with stem cell differentiation and differs between various
somatic cell types. These changes in nuclear architecture are associated with the
regulation of gene expression and genome function in a cell-type specific manner.
Biophysical stimuli are known effectors of differentiation and also elicit
stimuli-specific changes in nuclear architecture. This occurs via the process of
mechanotransduction whereby extracellular mechanical forces activate several well
characterized signaling cascades of cytoplasmic origin, and potentially some
recently elucidated signaling cascades originating in the nucleus. Recent work
has demonstrated changes in nuclear mechanics both with pluripotency state in
embryonic stem cells, and with differentiation progression in adult mesenchymal
stem cells. This review explores the interplay between cytoplasmic and nuclear
mechanosensitivity, highlighting a role for the nucleus as a rheostat in tuning
the cellular mechano-response.