Journal article Open Access

Aging and nuclear organization: Lamins and progeria

Mounkes, Leslie C.; Stewart, Colin L.

The discoveries of at least eight human diseases arising from mutations in LMNA, which encodes the nuclear A-type lamins, have revealed the nuclear envelope as an organelle associated with a variety of fundamental cellular processes. The most recently discovered diseases associated with LMNA mutations are the premature aging disorders Hutchinson-Gilford progeria syndrome (HGPS) and atypical Werner's syndrome. The phenotypes of both HGPS patients and a mouse model of progeria suggest diverse compromised tissue functions leading to defects reminiscent of aging. Aspects of the diseases associated with disrupted nuclear envelope/lamin functions may be explained by decreased cellular proliferation, loss of tissue repair capability and a decline in the ability to maintain a differentiated state.

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