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Related Concept Videos

Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

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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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MHC molecules are key players in the immune response, enabling T cells to recognize and respond to specific antigens. They are present on the surface of all nucleated cells in the body and are instrumental in presenting antigens to T cells and activating them. T cells recognize the MHC-antigen complex and initiate an immune response. MHC class I and MHC class II are two main types of MHC molecules, each associated with a distinct antigen processing pathway.
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The immune system is a complex network of cells and molecules that protects the body from foreign invaders. T cells, a type of white blood cell, play a crucial role in this process. They recognize and attack foreign substances, such as pathogens, that enter the body.
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Hybridoma technology is used for the large-scale production of monoclonal antibodies. Monoclonal antibodies bind to only a single antigenic determinant or epitope. Such antibodies are used in research, diagnostics, and disease therapy. The hybridoma technology established in 1975 by Georges Köhler and Cesar Milstein was awarded the Nobel Prize in Medicine in 1984 for revolutionizing research and therapy.
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Antigen Delivery Systems: Past, Present, and Future.

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Summary
This summary is machine-generated.

Developing effective vaccines relies on advancing antigen (Ag) screening, delivery systems, and manufacturing. This review analyzes various Ag delivery systems to improve vaccine development for global health challenges.

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Antigen delivery systemExtracellular vesicleNanoparticleSelf-assembled particlesVaccineVector

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Area of Science:

  • Vaccinology
  • Biotechnology
  • Immunology

Background:

  • The COVID-19 pandemic highlighted the urgent need for safe and effective vaccines.
  • Research into vaccines for diseases like MERS, Ebola, HIV, and cancers is crucial for global health.
  • Advancements in antigen screening, delivery systems, adjuvants, and manufacturing are vital for vaccine development.

Purpose of the Study:

  • To review and analyze the characteristics of diverse antigen delivery systems.
  • To provide insights into the current vaccine development landscape.
  • To identify promising research directions for improving antigen delivery systems.

Main Methods:

  • Analysis of various antigen delivery systems including plasmids, viral vectors, bacterial vectors, nanoparticles, self-assembled particles, natural and artificial cells, and extracellular vesicles.
  • Review of current literature on vaccine development technologies.

Main Results:

  • Antigen delivery systems are essential for delivering sufficient antigen and enhancing immune response.
  • The choice of antigen type and delivery system influences vaccine manufacturing processes.
  • A wide array of antigen delivery systems with distinct characteristics are available for vaccine development.

Conclusions:

  • Effective antigen delivery systems are critical for successful vaccine development.
  • Further research into antigen delivery systems can significantly improve vaccine efficacy and manufacturing.
  • This review highlights key areas for future innovation in vaccine technology.