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Nuclear Export

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The nucleus restricts several proteins within and allows others to pass. The restricted proteins possess a nuclear retention sequence or NRS, anchoring them to the nuclear lamins and preventing their transport to the cytosol. The non-restricted proteins, after their synthesis, are transported to their site of action, such as the cytosol or other organelles, with the help of nuclear export signals or NES.
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Related Experiment Video

Updated: Jun 27, 2026

Analysis of mRNA Nuclear Export Kinetics in Mammalian Cells by Microinjection

Analysis of mRNA Nuclear Export Kinetics in Mammalian Cells by Microinjection

Published on: December 4, 2010

mRNA nuclear export and human disease.

Jessica A Hurt¹, Pamela A Silver

¹Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA.

Disease Models & Mechanisms

|December 3, 2008

Summary

This summary is machine-generated.

Aberrant nuclear retention of messenger RNA (mRNA) can cause human diseases. Studies in yeast and fly models reveal links between mRNA export factors, like GLE1, and motor neuron disorders.

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Analysis of mRNA Nuclear Export Kinetics in Mammalian Cells by Microinjection

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Assay to Measure Nucleocytoplasmic Transport in Real Time within Motor Neuron-like NSC-34 Cells

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Published on: May 16, 2017

Area of Science:

Molecular Biology
Genetics
Neuroscience

Background:

Messenger RNA (mRNA) export from the nucleus is crucial for eukaryotic gene expression.
Dysregulation of mRNA nuclear export is linked to various human diseases.
Model organisms like yeast and flies have been instrumental in understanding fundamental cellular processes.

Purpose of the Study:

To explore mechanisms of aberrant mRNA nuclear retention causing human disease.
To discuss the role of the mRNA export factor GLE1 in motor neuron disorders.
To highlight conserved regulatory mechanisms between yeast and human disease.

Main Methods:

Review of existing literature on mRNA export pathways.
Analysis of genetic studies implicating mRNA export factors in human diseases.
Comparative analysis of regulatory mechanisms in model organisms and humans.

Main Results:

Identified distinct mechanisms of aberrant mRNA nuclear retention contributing to human pathology.
Presented evidence linking the mRNA export factor GLE1 to two fatal motor neuron diseases.
Revealed conserved regulatory pathways between yeast and human disease mechanisms.

Conclusions:

Aberrant mRNA nuclear retention is a significant factor in human disease pathogenesis.
The mRNA export factor GLE1 is a key player in specific motor neuron disorders.
Model organism research provides critical insights into complex human diseases and their underlying cellular mechanisms.