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Updated: Aug 14, 2026

Adjuvant Activity of Mycobacterium paratuberculosis in Enhancing the Immunogenicity of Autoantigens During Experimental Autoimmune Encephalomyelitis
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Adjuvant Activity of Mycobacterium paratuberculosis in Enhancing the Immunogenicity of Autoantigens During Experimental Autoimmune Encephalomyelitis

Published on: May 12, 2023

Multiple toll-like receptor agonists act as potent adjuvants in the induction of autoimmunity

Baranda S Hansen1, Rehana Z Hussain, Amy E Lovett-Racke

  • 1Department of Neurology, UT Southwestern Medical Center, 5323 Harry Hines Blvd. Dallas, TX 75390, USA.

Journal of Neuroimmunology
|December 20, 2005
PubMed

Insights

Infections can worsen Multiple Sclerosis (MS). Pathogen-associated molecular patterns (PAMPs) act as adjuvants to induce Experimental Autoimmune Encephalomyelitis (EAE), an MS model, suggesting a role in T cell priming.

Area of Science:

  • Immunology
  • Neuroscience
  • Microbiology

Background:

  • Infections are known triggers or exacerbators of Multiple Sclerosis (MS).
  • Bacterial and viral agents are implicated in MS pathogenesis.
  • Pathogen-associated molecular patterns (PAMPs) are recognized by host cells via Toll-like receptors (TLRs).

Purpose of the Study:

  • To investigate the role of PAMPs in the animal model of MS, Experimental Autoimmune Encephalomyelitis (EAE).
  • To determine if PAMPs can act as adjuvants in EAE induction.
  • To explore the necessity of TLR signaling in the target organ for EAE development.

Main Methods:

  • Utilized the EAE animal model.
  • Investigated the role of MyD88-dependent PAMPs.
  • Conducted studies with IRAK1-deficient mice.

Main Results:

  • Various MyD88-dependent PAMPs were found to act as adjuvants in inducing EAE.
  • TLR signaling in the target organ was not required for disease development in IRAK1-deficient mice.
  • PAMPs appear crucial for priming autoreactive T cells in EAE.

Conclusions:

  • PAMPs play a significant role in the induction of EAE, potentially through adjuvant activity.
  • The findings suggest PAMPs are important for priming autoreactive T cells in EAE.
  • This mechanism may also be relevant to the pathogenesis of Multiple Sclerosis in humans.

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