LL-37

Buy LL-37 online from Research Chems Australia

LL-37 is a peptide studied for its ability to modulate immune response and promote wound healing, shipped same business day from Melbourne with free express shipping on orders over $200.

What Is LL-37?

LL-37 is a 37-amino acid peptide naturally produced by immune cells and skin tissue as part of the body's first line of defense against infection and injury.

What sets LL-37 apart from other antimicrobial peptides is that it does far more than kill pathogens. It simultaneously modulates immune responses, promotes wound healing, and stimulates new blood vessel formation, making it one of the most versatile host defense molecules studied. Its activity against drug-resistant bacteria like MRSA has driven particular research interest.

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How Does LL-37 Work?

LL-37 targets both pathogens and host immune signaling:

LL-37 remains effective against multidrug-resistant bacteria including MRSA and VRE, a significant advantage as conventional antibiotics face growing resistance. Its production is naturally upregulated by vitamin D, directly linking immune defense capacity to vitamin D status.

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Research Focus Areas

LL-37 is being studied for its potential effects on:

• Antimicrobial defense — broad-spectrum activity against gram-positive, gram-negative bacteria, fungi, and viruses
• Antibiotic resistance — efficacy against multidrug-resistant pathogens including MRSA and VRE
• Wound healing — epithelial cell proliferation, migration, and wound closure
• Immune modulation — chemotaxis, cytokine regulation, and TLR signaling modulation
• Anti-biofilm activity — disruption of established bacterial biofilm structures
• Angiogenesis — neovascularization in tissue repair models
• Anti-sepsis — LPS neutralization and suppression of endotoxin-driven inflammation
• Anticancer research — selective membrane interactions with cancer cells via exposed phosphatidylserine

LL-37 expression is naturally upregulated during infection and inflammation. Its production by vitamin D-dependent pathways has generated significant crossover research between immunology and nutritional science.