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Related Concept Videos

Vaccinations01:51

Vaccinations

Overview
Vaccines01:21

Vaccines

Vaccines are among the most effective tools in preventive medicine, designed to prepare the immune system to recognize and combat infectious agents. By introducing antigens—substances that the immune system identifies as foreign—vaccines stimulate an adaptive immune response that leads to immunological memory. This immunological memory enables the body to mount a faster and more effective response upon future exposures to the actual pathogen.Vaccines can be categorized based on the type of...
Active versus Passive Immunity01:31

Active versus Passive Immunity

Immunity, along with the ability to limit pathogen growth to prevent significant body tissue damage, can be gained either by (1) actively developing an immune response within the individual after exposure to a pathogen or after getting vaccinated or (2) passively transferring immune components from an immune individual to one who is nonimmune. Both these forms of immunity can be found naturally and in medical practices.
Active Immunity
Active immunity refers to the resistance one develops...
Hand hygiene01:23

Hand hygiene

Asepsis is the practice of preventing or breaking the chain of infection. The nurse employs aseptic techniques to prevent the spread of microorganisms and reduce the risk of diseases. Hand hygiene is the cornerstone of aseptic techniques and is classified into medical and surgical asepsis. Medical asepsis includes hand hygiene and the use of gloves. Surgical asepsis, or the sterile technique, refers to practices that render and keep objects and areas free of microorganisms.
Hand washing...
Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

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.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.

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Related Experiment Video

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Murine Model of Epicutaneously-Induced Immunomodulation
09:07

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Published on: June 24, 2025

Transcutaneous immunization using common chemicals.

Pankaj Karande1, Anubhav Arora, Thien Kahn Pham

  • 1Department of Chemical & Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, United States.

Journal of Controlled Release : Official Journal of the Controlled Release Society
|May 12, 2009
PubMed
Summary
This summary is machine-generated.

Topical vaccines applied to the skin can be enhanced by common skin product chemicals. This novel approach improves antigen delivery and immune response, offering a needle-free immunization alternative.

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Area of Science:

  • Immunology
  • Dermatology
  • Vaccine Development

Background:

  • Transcutaneous immunization (topical vaccine application) offers advantages over traditional needle-based methods.
  • Limited antigen transport across the skin's stratum corneum hinders effective topical vaccine responses.
  • Enhancing antigen delivery and immune activation is crucial for successful transcutaneous immunization.

Purpose of the Study:

  • To investigate the potential of common skin product chemicals to enhance transcutaneous immunization.
  • To identify chemical formulations that improve antigen delivery and immune response.
  • To develop a rational design strategy for topical vaccine formulations.

Main Methods:

  • Systematic in vitro screening of 600 chemical formulations for antigen delivery potency.
  • In vitro assessment of selected formulations for adjuvanticity (immune response activation).
  • In vivo evaluation of lead formulations for antibody titer generation against ovalbumin.

Main Results:

  • Chemical formulations significantly enhanced antigen delivery and immunogenicity.
  • Lead formulations demonstrated superior ability to generate anti-ovalbumin IgG titers in vivo.
  • Combinatorial screening enabled rational design of effective topical vaccine formulations.

Conclusions:

  • Chemical formulations can effectively enhance transcutaneous immunization.
  • The immunogenicity of topically applied antigens can be improved using common skincare chemicals.
  • Rational design through combinatorial screening is a viable strategy for developing novel topical vaccine delivery systems.