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The Nuclear Envelope in Ageing and Progeria.

Adrián Fragoso-Luna1, Peter Askjaer2

  • 1Andalusian Centre for Developmental Biology, Consejo Superior de Investigaciones Científicas (CSIC), Universidad Pablo de Olavide, Sevilla, Spain.

Sub-Cellular Biochemistry
|January 4, 2023
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Summary

The nuclear envelope (NE) is vital for cell stability, gene regulation, and genome maintenance throughout life. Defects in the NE are linked to accelerated aging syndromes and neurodegenerative diseases, suggesting therapeutic potential.

Keywords:
HGPSLaminopathyNGPSNPCNeurodegenerationNuclear laminaNuclear pore complexNucleocytoplasmic transportProgeria

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Area of Science:

  • Cell Biology
  • Genetics
  • Aging Research

Background:

  • The nuclear envelope (NE) is crucial for cellular compartmentalization, genome stability, and gene expression regulation.
  • NE functions include maintaining nuclear structure, controlling molecular transport, and organizing chromatin.
  • Ageing involves cellular and organismal changes where NE integrity is often compromised.

Purpose of the Study:

  • To review the role of the nuclear envelope in ageing and age-related diseases.
  • To highlight the connection between NE dysfunction and specific human diseases like progeria and neurodegeneration.
  • To explore potential therapeutic strategies targeting NE-related pathways.

Main Methods:

  • Literature review and synthesis of existing research on nuclear envelope functions.
  • Analysis of genetic mutations associated with progeria syndromes (HGPS, NGPS).
  • Examination of molecular mechanisms in age-related neurodegenerative diseases linked to nucleocytoplasmic transport defects.

Main Results:

  • Mutations in nuclear lamina genes (LMNA, BANF1) cause progeria syndromes with accelerated ageing phenotypes.
  • Cells in progeria patients and aged individuals exhibit similar defects, including DNA damage and epigenetic alterations.
  • Defects in nucleocytoplasmic transport are implicated in neurodegenerative diseases, with protein aggregates forming in inclusions.

Conclusions:

  • The nuclear envelope plays a critical role in preventing age-related cellular dysfunction.
  • Targeting NE components and nucleocytoplasmic transport pathways offers potential therapeutic avenues for ageing and associated diseases.
  • Understanding NE biology is key to addressing diseases of ageing.