Journal
CELLS
Volume 11, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/cells11111846
Keywords
cancer; EMT; epigenome; heterochromatin; lamin; lamina-associated domain; senescence
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Funding
- Norwegian Cancer Society
- South-East Health Norway
- Research Council of Norway
- University of Oslo
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Cellular senescence and cancer initiation are associated with alterations in the nuclear envelope, heterochromatin reorganization, and massive reprogramming of the epigenome. Changes in chromatin organization and the epigenome affecting lamina-associated domains (LADs) and related genomic domains play crucial roles in senescence and cancer.
Induction of cellular senescence or cancer is associated with a reshaping of the nuclear envelope and a broad reorganization of heterochromatin. At the periphery of mammalian nuclei, heterochromatin is stabilized at the nuclear lamina via lamina-associated domains (LADs). Alterations in the composition of the nuclear lamina during senescence lead to a loss of peripheral heterochromatin, repositioning of LADs, and changes in epigenetic states of LADs. Cancer initiation and progression are also accompanied by a massive reprogramming of the epigenome, particularly in domains coinciding with LADs. Here, we review recent knowledge on alterations in chromatin organization and in the epigenome that affect LADs and related genomic domains in senescence and cancer.
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