Abstract :
[en] As the home of cellular genetic information, the nucleus has a critical role in determining cell fate and function in response to various signals and stimuli. In addition to biochemical inputs, the nucleus is constantly exposed to intrinsic and extrinsic mechanical forces that trigger dynamic changes in nuclear structure and morphology. Emerging data suggest that the physical deformation of the nucleus modulates many cellular and nuclear functions. These functions have long been considered to be downstream of cytoplasmic signalling pathways and dictated by gene expression. In this Review, we discuss an emerging perspective on the mechanoregulation of the nucleus that considers the physical connections from chromatin to nuclear lamina and cytoskeletal filaments as a single mechanical unit. We describe key mechanisms of nuclear deformations in time and space and provide a critical review of the structural and functional adaptive responses of the nucleus to deformations. We then consider the contribution of nuclear deformations to the regulation of important cellular functions, including muscle contraction, cell migration and human disease pathogenesis. Collectively, these emerging insights shed new light on the dynamics of nuclear deformations and their roles in cellular mechanobiology.
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Funding text :
The authors apologize to all authors whose work could not be included owing to space constraints. A.D.S. is supported by the Pathway to Independence Award (R00GM123195) and 4D Nucleome 2 centre grant (1UM1HG011536). S.G. acknowledges funding from FEDER Prostem Research Project no. 1510614 (Wallonia DG06), the F.R.S.-FNRS Epiforce Project no. T.0092.21 and the Interreg MAT(T)ISSE project, which is financially supported by Interreg France-Wallonie-Vlaanderen (Fonds Européen de Développement Régional, FEDER-ERDF). Y.K. is financially supported by FRIA (F.R.S.-FNRS) and FRMH (Fonds pour la Recherche Médicale dans le Hainaut). J.L. is supported by awards from the National Institutes of Health (R01HL082792, R01GM137605, U54CA210184), the National Science Foundation (URoL-2022048) and the VolkswagenStiftung (Az. 96733).
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