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Related Concept Videos

Nuclear Export of mRNA02:31

Nuclear Export of mRNA

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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...
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Microorganisms in Medicine and Therapeutics01:29

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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.
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RNA Interference01:23

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RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
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Experimental RNAi02:15

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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...
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mRNA Stability and Gene Expression02:51

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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
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Regulated mRNA Transport02:22

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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...
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Updated: Sep 22, 2025

Synthesis and Characterization of mRNA-Loaded PolyBeta Aminoesters Nanoparticles for Vaccination Purposes
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Describing mRNA Vaccine Technology for a Military Audience.

Adam T Biggs1, Lanny F Littlejohn1

  • 1Medical Department, Naval Special Warfare Command, Coronado, CA 92155, USA.

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Messenger RNA (mRNA) vaccines represent a significant advancement in vaccine technology, offering rapid development and deployment. This review clarifies common questions about mRNA vaccine safety, efficacy, and function for military medical professionals.

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Area of Science:

  • Vaccinology
  • Molecular Biology
  • Immunology

Background:

  • Vaccine technology has evolved significantly over 200 years, with messenger RNA (mRNA) vaccines emerging as a recent breakthrough.
  • The rapid development and deployment of mRNA vaccines during a pandemic raised questions regarding their safety and efficacy.

Approach:

  • This review describes different vaccine types, including whole-pathogen, subunit, and nucleic acid (mRNA) vaccines.
  • It addresses common concerns about mRNA vaccine development speed, DNA modification, and duration of immunity.

Key Points:

  • mRNA vaccines enable faster production by allowing cells to produce target proteins, bypassing traditional virus cultivation.
  • mRNA vaccines do not enter the cell nucleus and therefore cannot alter DNA.
  • While efficacy is high, long-term immunity data for mRNA vaccines are still under investigation.

Conclusions:

  • mRNA vaccines are a sophisticated and rapidly deployable defense against emerging biological threats, crucial for military medicine.
  • Current evidence supports the high safety and effectiveness of mRNA vaccines, empowering medical personnel to recommend this technology for force health protection.