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An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
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Carbohydrate-based adjuvants.

Pilar Garcia-Vello1, Immacolata Speciale1, Fabrizio Chiodo2

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Carbohydrate adjuvants offer safe, biocompatible vaccine delivery, stimulating immune responses for intracellular pathogens. Ongoing research and clinical trials highlight their growing importance in vaccine development.

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Area of Science:

  • Immunology
  • Vaccinology
  • Carbohydrate Chemistry

Background:

  • Carbohydrate adjuvants are biocompatible and can serve as sustained delivery systems.
  • They stimulate humoral and cellular immune responses, proving effective against intracellular pathogens where alum is inadequate.
  • Developing novel adjuvants is challenging and costly.

Purpose of the Study:

  • To review the current landscape and potential of carbohydrate-based adjuvants in vaccine development.
  • To highlight recent advancements and ongoing research in carbohydrate adjuvant technology.

Main Methods:

  • Literature review of recent patents and clinical trials involving carbohydrate adjuvants.
  • Analysis of scientific publications on the mechanism of action and safety of carbohydrate adjuvants.

Main Results:

  • Seven new carbohydrate-based adjuvants have been patented in the last two years.
  • Twelve ongoing clinical trials are investigating vaccines containing carbohydrate-based adjuvants.
  • Numerous publications confirm their efficacy and safety profiles.

Conclusions:

  • Carbohydrate adjuvants represent a promising platform for next-generation vaccines, particularly for intracellular pathogens.
  • Continued research is essential for refining existing carbohydrate adjuvants and innovating new ones.