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Related Concept Videos

Ribosome Profiling02:24

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...
Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the addition of a...
Translational Regulation01:29

Translational Regulation

Translational regulation in prokaryotes ensures efficient protein synthesis by controlling ribosome access to mRNA. This regulation is mediated by secondary RNA structures, including translational riboswitches, RNA thermometers, and small RNAs (sRNAs), which respond to intracellular and environmental signals to modulate gene expression.Translational RiboswitchesRiboswitches in the leader region of mRNAs can regulate translation by altering the accessibility of the Shine-Dalgarno (SD) sequence,...

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Related Experiment Video

Updated: May 20, 2026

Cell-Type Specific Protein Purification and Identification from Complex Tissues Using a Mutant Methionine tRNA Synthetase Mouse Line
07:39

Cell-Type Specific Protein Purification and Identification from Complex Tissues Using a Mutant Methionine tRNA Synthetase Mouse Line

Published on: April 13, 2022

mRNA as a versatile tool for exogenous protein expression.

Andreas N Kuhn1, Tim Beiβert, Petra Simon

  • 1TRON (Translational Oncology at the University Medical Center of the Johannes Gutenberg University Mainz), Mainz, Germany.

Current Gene Therapy
|July 26, 2012
PubMed
Summary

Synthetic messenger RNA (mRNA) offers a safer alternative to DNA vectors for transient gene expression, overcoming genetic alteration risks. Optimization strategies enhance RNA stability, transfection, and immunogenicity for various therapeutic applications.

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Last Updated: May 20, 2026

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Gene Therapy

Background:

  • Conventional gene therapy relies on recombinant DNA vectors, posing risks of permanent genetic alteration.
  • Safety and ethical concerns limit DNA-based vector use in human clinical applications.
  • Synthetic messenger RNA (mRNA) has emerged as a promising alternative for transient gene delivery.

Purpose of the Study:

  • To review recent advancements in optimizing mRNA as a vector for protein expression.
  • To emphasize improvements in mRNA stability, transfection efficiency, and immunogenicity.
  • To summarize pre-clinical and clinical studies utilizing RNA-based vectors.

Main Methods:

  • Review of literature on mRNA vector development and optimization.
  • Analysis of cis-acting structural elements (5'-cap, poly(A)-tail, UTRs, coding sequence) for enhanced RNA performance.
  • Compilation of data from pre-clinical and clinical studies involving RNA therapeutics.

Main Results:

  • Synthetic mRNA vectors offer advantages over DNA, particularly for transient gene expression.
  • Optimization of structural elements significantly enhances RNA stability and translation efficiency.
  • RNA-based vectors are being explored for immunotherapy, T cell, stem cell, and gene therapy.

Conclusions:

  • mRNA vectors represent a powerful and safer tool for modulating protein expression compared to DNA vectors.
  • Continued optimization of mRNA vectors holds significant potential for diverse therapeutic applications.
  • RNA-based therapies are advancing through pre-clinical and clinical development for various diseases.