Immune
LL-37
LL-37 (Cathelicidin Antimicrobial Peptide)
Last updated: March 2026
Sequence
37 amino acids
Origin
Human cathelicidin
Available From
10 suppliers
Forms
1 types
Key Benefits
1
Broad-spectrum antimicrobial activity2
Modulates immune response3
May support wound healing4
Anti-biofilm properties studiedHow It Works
LL-37 is the only human cathelicidin antimicrobial peptide. It is part of the innate immune system, released by neutrophils, macrophages, and epithelial cells. LL-37 kills bacteria by disrupting their cell membranes, inhibits biofilm formation, modulates inflammation, and promotes wound healing through angiogenesis and cell migration.
Research Highlights
📄The only human cathelicidin antimicrobial peptide
📄Active against gram-positive and gram-negative bacteria
📄Disrupts bacterial biofilms
📄Modulates inflammatory cytokine response
📄Vitamin D upregulates natural LL-37 expression
Available Forms
- Lyophilized powder for injection
Research Dosing
Research protocols vary widely. Typical subcutaneous doses range from 50-100mcg. Used in wound care research at various topical concentrations.
⚠️ For research reference only. Not medical advice.
Legal Status
LL-37 is available for research purposes. Not FDA-approved. Not a controlled substance.
Check legal status by country →Compare Prices
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