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AntimicrobialImmune SupportWound Healing

LL-37

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Also known as: Cathelicidin, CAP-18, Human Antimicrobial Peptide

Overview

LL-37 is the only human cathelicidin antimicrobial peptide, a 37-amino acid cationic peptide derived from hCAP18. It exhibits broad-spectrum antimicrobial activity against bacteria, viruses, and fungi while modulating immune responses and promoting wound healing.

How It Works

LL-37 disrupts bacterial cell membranes through its positive charge (+6), creating transmembrane pores that cause cell lysis. It also binds to host receptors (FPRL-1, P2X7, EGFR) to boost chemotaxis, cell proliferation, and immunoregulation. Unlike traditional antibiotics, bacteria rarely develop resistance to it.

Research Status

Extensive research in antimicrobial applications. Not FDA approved. Published studies available on PubMed (PMC8227053).