How does LL-37 work?
Research overview of how LL-37 works at the molecular level — its proposed mechanism of action, what the published research shows, and where the gaps are.
Proposed mechanism of LL-37
A human cathelicidin antimicrobial peptide researched for broad-spectrum antimicrobial, immunomodulatory, and wound-healing properties.
Research on LL-37 focuses on how the peptide interacts with specific biological targets in vitro and in laboratory animal models. Because LL-37 is sold strictly for research use, the mechanism is discussed here only in the context of published scientific literature — not as any suggestion of human efficacy.
What the research literature describes
What is LL-37?
LL-37 is the only cathelicidin-derived antimicrobial peptide found in humans. It is studied in the antimicrobial, immune-modulation, and epithelial-barrier research literature.
What is LL-37 researched for?
Published preclinical research has examined LL-37 in antimicrobial-pathway, immune-signalling, and epithelial-barrier studies. It is one of the most-studied endogenous host-defence peptides in the in-vitro literature.
What purity does Peptify LL-37 meet?
Peptify LL-37 is 99%+ HPLC-verified with a batch-specific Janoshik Analytical Certificate of Analysis downloadable from the product page.
Researchers working with LL-37 typically combine multiple analytical techniques — HPLC for purity, mass spectrometry for identity confirmation, and sometimes NMR for structural verification — before beginning any experimental protocol.
Important research limitations
Most published research on novel peptides is preclinical: conducted in cell lines, tissue samples, or animal models. Results from preclinical research do not automatically translate to human outcomes, and no peptide sold for research use is a substitute for an MHRA-approved medicine. All Peptify products are "for research use only" per UK regulations.
Buy LL-37 for research
99%+ HPLC-verified LL-37 in stock. Every vial ships from the UK with a batch-specific Certificate of Analysis. Same-day dispatch on orders before 1pm.
Frequently asked questions
What is LL-37?
LL-37 is the only cathelicidin-derived antimicrobial peptide found in humans. It is studied in the antimicrobial, immune-modulation, and epithelial-barrier research literature.
What is LL-37 researched for?
Published preclinical research has examined LL-37 in antimicrobial-pathway, immune-signalling, and epithelial-barrier studies. It is one of the most-studied endogenous host-defence peptides in the in-vitro literature.
What purity does Peptify LL-37 meet?
Peptify LL-37 is 99%+ HPLC-verified with a batch-specific Janoshik Analytical Certificate of Analysis downloadable from the product page.