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Nuclear Export of mRNA

Nuclear Export of mRNA

Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...

Nuclear Export of mRNA

Nuclear Export of mRNA

Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...

Regulated mRNA Transport

Regulated mRNA Transport

In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing specific...

Regulated mRNA Transport

Regulated mRNA Transport

In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing specific...

Nuclear Export

Nuclear Export

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.
NES are of three types- the canonical 10-residue long leucine-rich signal and other...

Ribosome Profiling

Ribosome Profiling

Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique helps...

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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

Monitoring mRNA export.

Kazuaki Tokunaga¹, Tokio Tani

¹Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kurokami, Kumamoto, Japan.

Current Protocols in Cell Biology

|December 17, 2008

Summary

Monitoring nuclear mRNA export is crucial for gene expression. This study details fluorescence in situ hybridization and microinjection methods for visualizing mRNA transport in living cells.

Area of Science:

Molecular Biology
Cell Biology
Genetics

Background:

Nuclear mRNA export is a fundamental process for eukaryotic gene expression.
Efficient transport of messenger RNA (mRNA) from the nucleus to the cytoplasm is vital for protein synthesis.
Dysregulation of mRNA transport is linked to various cellular pathologies.

Purpose of the Study:

To describe established and novel methods for monitoring nuclear mRNA export.
To provide protocols for visualizing mRNA transport dynamics within eukaryotic cells.
To enable researchers to study the mechanisms of mRNA nuclear export.

Main Methods:

Fluorescence in situ hybridization (FISH) using oligo(dT) probes to visualize cellular mRNAs.
Application of FISH in yeast and mammalian cells to monitor mRNA export.

More Related Videos

Method for the Isolation and Identification of mRNAs, microRNAs and Protein Components of Ribonucleoprotein Complexes from Cell Extracts using RIP-Chip

Method for the Isolation and Identification of mRNAs, microRNAs and Protein Components of Ribonucleoprotein Complexes from Cell Extracts using RIP-Chip

Published on: September 29, 2012

Assessment of Selective mRNA Translation in Mammalian Cells by Polysome Profiling

Assessment of Selective mRNA Translation in Mammalian Cells by Polysome Profiling

Published on: October 28, 2014

Related Experiment Videos

Last 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

Method for the Isolation and Identification of mRNAs, microRNAs and Protein Components of Ribonucleoprotein Complexes from Cell Extracts using RIP-Chip

Method for the Isolation and Identification of mRNAs, microRNAs and Protein Components of Ribonucleoprotein Complexes from Cell Extracts using RIP-Chip

Published on: September 29, 2012

Assessment of Selective mRNA Translation in Mammalian Cells by Polysome Profiling

Assessment of Selective mRNA Translation in Mammalian Cells by Polysome Profiling

Published on: October 28, 2014

Development of a microinjection technique for introducing fluorescently labeled pre-mRNA into living mammalian cell nuclei for real-time analysis.

Main Results:

Fluorescence in situ hybridization with oligo(dT) probes is a robust method for monitoring mRNA export.
The microinjection technique allows for visual analysis of nuclear mRNA export in living cells.
Both methods provide valuable insights into the spatiotemporal dynamics of mRNA transport.

Conclusions:

Established and novel visualization techniques effectively monitor nuclear mRNA export.
These methods are applicable to both yeast and mammalian cell systems.
Visualizing mRNA export provides a deeper understanding of gene expression regulation.