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Related Concept Videos

Leaky Scanning02:28

Leaky Scanning

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During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R...
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Initiation of Translation02:33

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Initiating translation is complex because it involves multiple molecules. Initiator tRNA, ribosomal subunits, and eukaryotic initiation factors (eIFs) are all required to assemble on the initiation codon of mRNA. This process consists of several steps that are mediated by different eIFs.
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Experimental RNAi02:15

Experimental RNAi

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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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siRNA - Small Interfering RNAs02:30

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Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
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Types of RNA01:23

Types of RNA

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Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
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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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Sequence-Optimized mRNA Vaccines Against Infectious Disease.

Susanne Rauch1, Johannes Lutz1, Janine Mühe1

  • 1CureVac AG, Tübingen, Germany.

Methods in Molecular Biology (Clifton, N.J.)
|May 30, 2024
PubMed
Summary
This summary is machine-generated.

This study presents a novel method for creating stabilized messenger RNA (mRNA) vaccines with improved immune response. The RNActive technology utilizes modified mRNA sequences and lipid nanoparticle formulation for enhanced vaccine efficacy.

Keywords:
AdjuvanticityGC enrichmentRNActive®Stabilized mRNAmRNA vaccines

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Area of Science:

  • Vaccinology
  • Molecular Biology
  • Immunology

Background:

  • Developing effective mRNA vaccines faces challenges in mRNA stability and immunogenicity.
  • Current methods require specialized production and testing techniques.

Purpose of the Study:

  • To describe the production of stabilized mRNA vaccines using RNActive technology.
  • To demonstrate enhanced immunogenicity of these vaccines.
  • To outline methods for mRNA vaccine production and evaluation.

Main Methods:

  • Utilizing conventional nucleotides with modifications to the mRNA sequence.
  • Formulating mRNA into lipid nanoparticles.
  • Employing synthesis, purification, and formulation techniques.
  • Conducting comprehensive in vitro and in vivo evaluations.

Main Results:

  • Production of stabilized mRNA vaccines with enhanced immunogenicity.
  • Successful application of RNActive technology.
  • Validation of quality and immunogenicity through extensive testing.

Conclusions:

  • Stabilized mRNA vaccines can be effectively produced using modified sequences and lipid nanoparticle formulation.
  • The described methods provide a robust framework for mRNA vaccine development and assessment.
  • RNActive technology offers a promising approach for next-generation vaccines.