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Related Concept Videos

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Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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Related Experiment Video

Updated: Jul 15, 2026

Quantifying Tissue-Specific Proteostatic Decline in Caenorhabditis elegans
09:18

Quantifying Tissue-Specific Proteostatic Decline in Caenorhabditis elegans

Published on: September 7, 2021

Karyopherin Dysfunction Is a Key Driver of Aging.

Louis R Lapierre1,2

  • 1New Brunswick Centre for Precision Medicine, Moncton, New Brunswick, Canada.

Aging Cell
|July 13, 2026
PubMed
Summary

Aging disrupts the spatial organization of proteins, with karyopherins (nuclear transport proteins) emerging as key regulators. Their dysfunction drives aging phenotypes by impairing proteostasis and signaling.

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Published on: April 13, 2018

Area of Science:

  • Cellular Biology
  • Aging Research
  • Molecular Biology

Background:

  • Aging is commonly viewed as proteostasis decline, focusing on protein misfolding and clearance.
  • Emerging evidence suggests aging disrupts the proteome's spatial organization, impacting cellular compartments and signaling.
  • Nucleocytoplasmic protein transport is crucial for maintaining cellular function.

Purpose of the Study:

  • To reframe aging biology by highlighting the central role of nucleocytoplasmic protein transport.
  • To propose that karyopherin dysfunction is a primary driver of aging phenotypes.
  • To reposition karyopherins as key regulators of proteostasis and aging.

Main Methods:

  • Review of current literature on aging, proteostasis, and nucleocytoplasmic transport.
  • Analysis of the role of karyopherins in protein solubility, condensation, and stress buffering.
  • Conceptual synthesis to link karyopherin function to aging phenotypes and diseases.

Main Results:

  • Karyopherins actively regulate proteostasis, protein phase behavior, and signaling fidelity.
  • Dysfunctional karyopherin-mediated transport contributes significantly to aging phenotypes.
  • Age-dependent failure of karyopherin transport links proteostasis collapse to disease.

Conclusions:

  • Nucleocytoplasmic transport, mediated by karyopherins, is a central regulatory layer in aging.
  • Karyopherins are not passive transporters but active regulators of cellular health.
  • Karyopherins represent promising therapeutic targets for interventions against aging.