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Antimicrobial peptides (AMPs) are emerging as key modulators of amyloid aggregation, influencing protein misfolding and inflammation. Engineered AMPs show potential as dual-action therapeutics for amyloid diseases.

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Area of Science:

  • Biochemistry
  • Immunology
  • Molecular Biology

Background:

  • Antimicrobial peptides (AMPs) traditionally function as innate immune effectors.
  • AMPs share structural and functional similarities with pathogenic amyloids.
  • Emerging evidence links AMPs to the modulation of amyloid aggregation.

Purpose of the Study:

  • To highlight the emerging role of AMPs as cross-seeding modulators of amyloid fibrillization.
  • To summarize mechanistic insights into AMP-amyloid interactions.
  • To present advances in engineering AMP-derived inhibitors for amyloid diseases.

Main Methods:

  • Review of recent studies on AMPs and amyloid aggregation.
  • Mechanistic analysis of β-sheet-rich AMPs engaging amyloidogenic targets.
  • Summary of design strategies for engineering dual-function AMPs.

Main Results:

  • AMPs can inhibit or promote amyloid fibrillization based on structural context.
  • AMP-amyloid cross-seeding contributes to a feedback loop linking infections, inflammation, and neurodegeneration.
  • Engineered AMP inhibitors demonstrate enhanced specificity, stability, and therapeutic potential.

Conclusions:

  • AMPs represent a novel class of cross-seeding modulators with implications for protein misfolding diseases.
  • Dual-function AMPs offer a promising therapeutic strategy for Alzheimer's, type 2 diabetes, and systemic amyloidosis.
  • Further research is needed for data-driven design, delivery optimization, and clinical development of AMPs.