LL-37 - 5mg

Overview 

LL-37 is a naturally occurring antimicrobial peptide and the only human member of the cathelicidin family, widely studied for its role in innate immune defense, inflammation regulation, and tissue repair. As a key component of the body’s first-line defense system, LL-37 has become a focal point in research exploring host defense, microbial balance, and immune signaling.

Primary

• Immune Support & Immune Modulation
• Inflammation Control
• Tissue Healing & Regeneration

Secondary Categories

•  Skin Health & Barrier Repair
• Gut Health & Microbiome Research
• Respiratory & Mucosal Health
• Systemic Wellness

Understanding This Peptide 

Derived from the human cathelicidin antimicrobial protein (hCAP-18), LL-37 is produced by immune cells and epithelial tissues throughout the body, including the skin, lungs, and gastrointestinal tract. Its multifunctional nature allows researchers to investigate both antimicrobial activity and broader immune-modulating pathways within a single peptide framework.

Mechanism of Action 

LL-37 is believed to disrupt microbial membranes, helping regulate bacterial and pathogen interactions while also modulating immune-cell signaling. Beyond its antimicrobial activity, it influences cytokine expression, supports chemotaxis (immune-cell recruitment), and plays a role in wound healing and epithelial barrier integrity. This dual function makes it a powerful model for studying both defense and repair mechanisms.

Scientific Interest 

Researchers are highly interested in LL-37 due to its unique ability to bridge antimicrobial defense with immune modulation and tissue regeneration. Its involvement in multiple physiological systems — including skin, gut, and respiratory tissues — makes it a versatile peptide for studying host–microbe interactions and inflammatory balance.

Research Focus & Clinical Landscape 

Current areas of scientific investigation include:

• antimicrobial and host-defense mechanisms
• immune signaling and cytokine modulation
• inflammation regulation
• wound healing and tissue repair
• epithelial barrier function (skin, gut, respiratory)
• microbiome and pathogen interaction studies

LL-37 has been studied extensively in both preclinical and translational research, with growing attention on its role in immune dysregulation and barrier integrity.

Quality, Craftsmanship & Purity 

Our LL-37 is synthesized in GMP-certified facilities and refined to purity levels exceeding >98%. Each batch undergoes rigorous analytical testing to confirm identity, structural integrity, and consistent performance, ensuring high reliability for advanced immunological and tissue-repair research.

Final Insight 

LL-37 represents a powerful convergence of antimicrobial defense, immune modulation, and tissue repair — offering a sophisticated and integrative pathway into the study of host defense and systemic resilience.