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Related Concept Videos

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...
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.
Vaccinations01:51

Vaccinations

Overview

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Correction: Fukushima et al. Long-Term Immunogenicity of Rabies Pre-Exposure Prophylaxis in Japanese Adult Travelers: Comparison of Dosing Regimens. <i>Vaccines</i> 2025, <i>13</i>, 1169.

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Chimeric Pathogen-Associated Molecular Patterns (PAMPs) as Vaccine Adjuvants.

Bethany M Potter1,2, Anya F Weth1, Emma M Dangerfield1

  • 1School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington P.O. Box 600, New Zealand.

Vaccines
|June 25, 2026
PubMed
Summary
This summary is machine-generated.

Covalently linking pathogen-associated molecular patterns (PAMPs) creates "chimeric" molecules that enhance immune cell activation and adjuvant activity. This strategy shows promise for infectious disease, allergy, and cancer immunotherapy vaccines.

Keywords:
MincleNOD2PAMPPRRSTINGTLRconjugate

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Area of Science:

  • Immunology
  • Vaccinology
  • Molecular Biology

Background:

  • Pathogen-associated molecular patterns (PAMPs) signal through pathogen recognition receptors (PRRs) on innate immune cells, a common adjuvant strategy.
  • The impact of covalently linking different PAMPs on immune responses is less understood.

Purpose of the Study:

  • To review the effects of PAMP linkage on innate and adaptive immune responses.
  • To explore the potential of PAMP conjugates as vaccine adjuvants.

Main Methods:

  • Literature review of studies on PAMP linkage and immune responses.
  • Analysis of immune cell synergies and adjuvant activity of PAMP conjugates.

Main Results:

  • Covalently linked PAMPs (chimeric PAMPs) often induce synergistic immune cell activation compared to unlinked PAMPs.
  • PAMP conjugates demonstrate significant adjuvant activity in infectious disease, allergy, and cancer immunotherapy models.
  • Potential mechanisms include enhanced PRR signaling crosstalk, particulate formation, improved endosomal targeting, and reduced toxicity.

Conclusions:

  • PAMP conjugates represent a promising platform for developing advanced vaccine adjuvants.
  • Further research is needed to understand linker chemistry, PRR signaling combinations, and immune response skewing.