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Related Concept Videos

Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

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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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Exosomes are stable, lipid bilayer-enclosed vesicles capable of crossing biological barriers. They can carry a wide range of molecules required for intercellular communication. Once exosomes are released from the cell where they originated, they enter a recipient cell through various pathways such as fusion, receptor-mediated endocytosis, macropinocytosis, and phagocytosis.
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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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Extracellular Vesicle-Based mRNA Therapeutics and Vaccines.

Qi Li1,2,3, Haonan Xing4, Abid Naeem1,2,3

  • 1School of Life Science, School of Interdisciplinary Science, Aerospace Center Hospital, Key Laboratory of Molecular Medicine and Biotherapy, Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering Beijing Institute of Technology Beijing China.

Exploration (Beijing, China)
|January 1, 2026
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Summary

Extracellular vesicles (EVs) show promise for delivering messenger RNA (mRNA) therapeutics and vaccines. This review explores how EVs can overcome challenges associated with current mRNA delivery methods, enhancing safety and efficacy.

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deliveryextracellular vesiclesmessenger RNAspackaging strategiesvaccines

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Nanomedicine

Background:

  • Messenger RNA (mRNA) therapeutics and vaccines are crucial but face delivery challenges.
  • Current platforms like lipid nanoparticles have limitations including immunogenicity, toxicity, and poor bioavailability.
  • Efficient and safe in vivo delivery is critical for clinical translation of mRNA technologies.

Purpose of the Study:

  • To review the latest advancements in using extracellular vesicles (EVs) for mRNA delivery.
  • To elucidate the mechanisms underlying EV-mediated mRNA transport.
  • To provide insights for designing effective and safe EV-based mRNA therapeutics and vaccines.

Main Methods:

  • Review of current literature on extracellular vesicle (EV) biogenesis, composition, and function.
  • Analysis of state-of-the-art methodologies for packaging EVs with messenger RNA (mRNA).
  • Discussion of the advantages and disadvantages of EVs as an mRNA delivery platform.

Main Results:

  • EVs possess favorable properties for mRNA delivery, including low immunogenicity and natural RNA-carrying capabilities.
  • EVs can potentially overcome limitations of current delivery systems, such as improving tissue bioavailability and reducing toxicity.
  • Various methods exist for loading EVs with mRNA, with ongoing research to optimize efficiency.

Conclusions:

  • Extracellular vesicles represent a promising alternative platform for mRNA delivery.
  • Harnessing EVs can address key challenges in mRNA therapeutics and vaccine development.
  • Further research into EV engineering and packaging is needed for clinical applications.