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Updated: Jan 27, 2026

In Vitro Aggregation Assays Using Hyperphosphorylated Tau Protein
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In Vitro Aggregation Assays Using Hyperphosphorylated Tau Protein

Published on: January 2, 2015

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Antimicrobial peptides inhibit Tau aggregation and modulates its pathology

Subashchandrabose Chinnathambi1, Nagaraj Rangappa1, Sneha Malik1

  • 1Department of Neurochemistry, National Institute of Mental Health and Neuro Sciences, Institute of National Importance, Bangalore, Karnataka, India.

Advances in Protein Chemistry and Structural Biology
|January 25, 2026
PubMed

Insights

Antimicrobial peptides may play a role in Alzheimer's disease (AD) pathology, potentially offering new therapeutic avenues. Research suggests these molecules, including amyloid beta, are involved in neuroinflammation and protein aggregation in AD patients.

Area of Science:

  • Neuroscience
  • Immunology
  • Microbiology

Background:

  • Alzheimer's disease (AD) pathology involves Tau and Amyloid-beta proteins, with no current cure for disease progression.
  • The microbial hypothesis suggests microorganisms contribute to AD via neuroinflammation.
  • Antimicrobial peptides are key to innate immunity and are increasingly studied in AD.

Purpose of the Study:

  • To explore the role of antimicrobial peptides in Alzheimer's disease.
  • To investigate antimicrobial peptides as potential biomarkers and therapeutic agents for AD.
  • To understand the connection between antimicrobial peptides, amyloid beta, and Tau in AD.

Main Methods:

  • Literature review of studies on antimicrobial peptides in Alzheimer's disease.
  • Analysis of research linking antimicrobial peptides to amyloid beta and Tau aggregation.
  • Examination of studies reporting altered antimicrobial peptide levels in AD patients.

Main Results:

  • Amyloid beta may function as an antimicrobial peptide, with aggregation potentially being a neuroprotective response.
  • Other antimicrobial peptides like lactoferrin, LL-37, and defensins are found with aggregated proteins.
  • Fluctuating levels of these peptides are observed in AD patients compared to controls.

Conclusions:

  • Antimicrobial peptides are implicated in Alzheimer's disease pathogenesis and progression.
  • These peptides show therapeutic potential and can serve as biomarkers for AD.
  • Further clinical studies are needed to determine their mechanisms, efficacy, and application in AD treatment.
Keywords:
Alzheimer’s diseaseAmyloid-βAntimicrobial peptidesTau

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