A Homozygous Mutation of Prelamin-A Preventing Its Farnesylation and Maturation Leads to a Severe Lipodystrophic Phenotype: New Insights into the Pathogenicity of Nonfarnesylated Prelamin-A

摘要

Context:Mutations in LMNA , encoding A-type lamins, lead to multiple laminopathies, including lipodystrophies, progeroid syndromes, and cardiomyopathies. Alterations in the prelamin-A posttranslational maturation, resulting in accumulation of farnesylated isoforms, cause human progeroid syndromes. Accumulation of mutant nonfarnesylated prelamin-A leads to cardiomyopathy or progeria in mice, but no data have been provided in humans.