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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...
Cancer Vaccines01:30

Cancer Vaccines

Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
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.
Vaccine Production01:23

Vaccine Production

Vaccine production involves a sequence of upstream and downstream processes to generate a safe and effective immunological product. It begins with cultivating microorganisms, such as viruses or bacteria, to obtain antigenic material. For viral vaccines, mammalian host cells are grown in bioreactors and subsequently infected with the target virus. The virus replicates within the host cells, which are lysed to release viral particles. This lysate is then clarified through filtration or...
Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

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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Evaluating the Immune Response of a Nanoemulsion Adjuvant Vaccine Against Methicillin-Resistant Staphylococcus aureus (MRSA) Infection
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Adjuvants for human vaccines.

Carl R Alving1, Kristina K Peachman, Mangala Rao

  • 1Laboratory of Adjuvant & Antigen Research, U.S. Military HIV Research Program, Walter Reed Army Institute of Research, 503 Robert Grant Avenue, Silver Spring, MD 20910, USA. calving@hivresearch.org

Current Opinion in Immunology
|April 24, 2012
PubMed
Summary
This summary is machine-generated.

Adjuvant selection for vaccines leverages molecular interactions with pattern recognition receptors. Novel formulations and delivery methods enhance immune responses, showing promise across species.

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Area of Science:

  • Immunology
  • Vaccinology
  • Molecular Biology

Background:

  • Adjuvant selection relies on molecular interactions with pattern recognition receptors, like Toll-like receptors.
  • Monophosphoryl lipid A, a TLR4 agonist, is formulated with liposomes, oil emulsions, or aluminum salts for vaccines.
  • Antigen-adjuvant combinations with lipid or oil components can exhibit unique immune properties, sometimes differing between species.

Purpose of the Study:

  • To explore rational adjuvant selection based on molecular interactions.
  • To investigate novel adjuvant formulations and delivery systems for enhanced vaccine efficacy.
  • To understand species-specific differences in immune responses to adjuvants.

Main Methods:

  • Analysis of innate molecular interactions between foreign molecules and pattern recognition receptors.
  • Formulation of monophosphoryl lipid A with various delivery systems (liposomes, oil emulsions, aluminum salts).
  • Evaluation of immune potency and efficacy of antigen-adjuvant combinations in different species.
  • Development of new adjuvants, formulations, microinjection devices, and transcutaneous immunization techniques.

Main Results:

  • Monophosphoryl lipid A formulated with liposomes, oil emulsions, or aluminum salts is utilized in vaccines.
  • Particulate lipid or oil components in antigen-adjuvant combinations can influence immune potency and efficacy.
  • Observed differences in immune responses between rodents, nonhuman primates, and humans.
  • Demonstration of new adjuvants, formulations, and delivery techniques, including microinjection and transcutaneous immunization.

Conclusions:

  • Rational adjuvant selection can be based on innate molecular interactions with pattern recognition receptors.
  • Novel adjuvant systems combining strategies and delivery mechanisms offer unique approaches for antigen and adjuvant formulation.
  • Understanding species-specific immune responses is crucial for effective vaccine development.
  • Advanced delivery techniques like transcutaneous immunization show potential for vaccine delivery.