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Related Concept Videos

Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
Regulated mRNA Transport02:22

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...
mRNA Stability and Gene Expression02:51

mRNA Stability and Gene Expression

The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability
Gene Therapy00:59

Gene Therapy

Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be inserted. The...
Experimental RNAi02:15

Experimental RNAi

RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
The Central Dogma01:20

The Central Dogma

The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
RNA is the Missing Link Between DNA and Proteins
In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...

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Updated: Jun 28, 2026

Delivery of Modified mRNA in a Myocardial Infarction Mouse Model
06:03

Delivery of Modified mRNA in a Myocardial Infarction Mouse Model

Published on: June 11, 2020

Current prospects for mRNA gene delivery.

Ayako Yamamoto1, Michael Kormann, Joseph Rosenecker

  • 1Department of Pediatrics, Ludwig-Maximilians, University, Munich, Germany.

European Journal of Pharmaceutics and Biopharmaceutics : Official Journal of Arbeitsgemeinschaft Fur Pharmazeutische Verfahrenstechnik E.V
|October 25, 2008
PubMed
Summary
This summary is machine-generated.

Messenger RNA (mRNA) offers a safer gene therapy alternative to viral vectors and plasmid DNA (pDNA). mRNA bypasses nuclear entry, avoiding insertional mutagenesis and enabling repeated applications for effective gene delivery.

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Gene Therapy

Background:

  • Viral vectors are effective for gene therapy but pose risks like insertional mutagenesis and immune responses.
  • Nonviral vectors, particularly plasmid DNA (pDNA), are safer but suffer from low gene transfer efficiency due to nuclear transport limitations.

Purpose of the Study:

  • To review recent advancements in messenger RNA (mRNA) gene delivery.
  • To discuss the potential applications of mRNA in gene therapy.

Main Methods:

  • Literature review of recent improvements in mRNA gene delivery technologies.
  • Analysis of the advantages of mRNA over plasmid DNA (pDNA) for gene therapy.

Main Results:

  • mRNA avoids the nuclear membrane barrier, unlike pDNA, as it functions in the cytoplasm.
  • mRNA technology eliminates the risk of insertional mutagenesis and the need for promoters.
  • mRNA allows for repeated administrations and is effective in non-dividing cells, potentially reducing immunogenicity.

Conclusions:

  • Messenger RNA (mRNA) presents a promising, safer alternative for gene delivery in gene therapy compared to viral vectors and pDNA.
  • The unique properties of mRNA overcome key limitations of traditional gene therapy vectors, opening new therapeutic opportunities.