LMNA

Symbol: LMNA
Name: lamin A/C
Entrez gene ID: 4000
Ensembl gene ID: ENSG00000160789
Species: Human (Taxid: 9606)

Functional description:
Lamins are components of the nuclear lamina, a fibrous layer on the nucleoplasmic side of the inner nuclear membrane, which is thought to provide a framework for the nuclear envelope and may also interact with chromatin. Lamin A and C are present in equal amounts in the lamina of mammals. Play an important role in nuclear assembly, chromatin organization, nuclear membrane and telomere dynamics. Prelamin-A/C can accelerate smooth muscle cell senescence. It acts to disrupt mitosis and induce DNA damage in vascular smooth muscle cells (VSMCs), leading to mitotic failure, genomic instability, and premature senescence. [UniProt]

Observation:

Dominant mutation in LMNA (lamin A/C) gene cause Hutchinson-Gilford progeria syndrome (HGPS) which is rare and characterized by prematurly senile appearing skin and hair, with death from coronary artery disease often by age 10 [Gilford 1904; Hutchinson 1886; OMIM]. The median age of death in HGPS individuals is 13.4 years. A C to T transition at nucleotide 1824 is associated with HGPS [Sandra-Giovannoli et al., 2003; Eriksson et al., 2003]. The 1824C-T allele appears to act in a dominant negative manner by interfering with normal splicing, resulting in production of both the normal transcript and a transcript deleted for 150 bp at the 3' end [Sandre-Giovannoli et al, 2003]. Cultured skin fibroblasts from individuals with progeria exhibit an increased fraction of hat-labile proteins [1128606].

Gilford (1904). Ateleiosis and progeria: continuous youth and premature old age. Brit Med J 2, 914-918. Hutchinson, J. (1886). Case of congenital absence of hair, with atrophic condition of the skin and its appendages, in a boy whose mother had been almost wholly bald from alopecia areata from the age of six. Lancet 1, 923.LMNA was found to be associated with longevity [22340368]. LMNA was found to be associated with longevity [22340368]. LMNA was found to be associated with longevity [22279548]. LMNA was found to be associated with longevity [24244950].



Interventions:
  • LMNA mutation

  • Assays: Organismal Lifespan

    Longevity Associated Variants:
  • rs915179 2.3666e-05 [22279548]
  • rs2275075 0.54 [22340368]
  • rs915179-rs2485662-rs4641-rs1468772 2.5e-05 [22340368]
  • rs915179 0.0001 [24244950]

  • Classification:
  • Gerontogene
  • Positive Gerontogene
  • Longevity-Associated


  • Aging Relevance Analysis/Source:
  • GenAge
  • GenDR

  • Homologs
  • LMNA (9606)
  • LMNA (9598)
  • LMNA (9615)
  • LMNA (9913)
  • Lmna (10090)
  • Lmna (10116)
  • lmna (7955)
  • AgaP_AGAP008015 (7165)

  • Inparanoids
  • ENSMUSP00000029699 (10090)
  • ENSRNOP00000026705 (10116)
  • ENSMMUP00000021173 (9544)



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