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| Items | Specifications |
Product Name | LL-37 |
CAS | 154947-66-7 |
| Molecular Formula | C205H340N60O53 |
| color | White |
| Form | Solid freeze-dried powder |
| Storage condition | -20°C |
| Purity | 99% |
| Packaging | Bottle, Can, Drum, Plastic Container, Vacuum Packet (According to customers' requirements) |
| Trademark | Customzied accepted |
LL-37 is a versatile small protein molecule naturally produced by the human body, often metaphorically described as the body's own “smart defense guard.” It is produced by surface barrier cells (like those in the skin and respiratory tract) and immune cells, serving as a core component of the innate immune system. It acts at the “front line” of infection and injury, embodying a genius molecule that combines the functions of a “soldier, sentinel, and doctor.”
Its primary roles can be summarized in three key aspects:
1. Rapid Response Unit
When bacteria, fungi, or enveloped viruses invade, LL-37 acts like a “natural antibiotic,” directly attacking and physically destroying or inhibiting these pathogens with speed.
2. Alarm Signal & Commander
Upon detecting pathogens or tissue damage, LL-37 serves as an “alarm signal,” releasing chemical cues to recruit more immune cells (like neutrophils and macrophages) to the “battlefield.” Simultaneously, it acts like a “field commander,” intelligently modulating the intensity and duration of the inflammatory response—effectively eliminating threats while preventing excessive immune reactions that could harm the body’s own tissues.
3. Repair Engineer
Once the battle subsides, LL-37’s work continues. It transitions into the role of a “repair foreman,” promoting the migration and proliferation of skin cells, stimulating the formation of new blood vessels, and actively clearing the “battlefield” to accelerate wound healing and tissue regeneration.
1. Physical Breach (Against Microbes)
The LL-37 molecule carries a positive charge, while the cell membranes of bacteria and fungi carry a negative charge. They attract each other like magnets. Once close, LL-37 inserts itself and disrupts the microbial membrane structure, effectively “punching holes” in it. This causes the microbe’s internal contents to leak out, leading to rapid death. This mode of attacking the overall membrane structure makes it very difficult for bacteria to develop resistance, unlike with conventional antibiotics.
2. Sending Signals (Commanding the Immune System)
LL-37 itself is a crucial signaling molecule. When released at sites of infection or injury, it acts like a “flare” or a “homing beacon,” guiding other immune cells. It tells immune cells “where the enemy is,” instructs them on how to coordinate the attack, and signals when to stop fighting and begin repair work.
3. Promoting Growth (Repairing Damaged Tissue)
During the repair phase, LL-37 “communicates” with cells like skin cells and vascular endothelial cells, activating their internal growth signaling pathways. This is akin to giving repair cells the “green light,” encouraging them to migrate faster to the wound site, proliferate, and form new blood vessel networks, thereby efficiently completing the reconstruction task.
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Broad-Spectrum and Potent: Effective against a wide range of common pathogens, including some drug-resistant bacteria.
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Low Resistance Risk: Its unique physical mode of action significantly reduces the risk of pathogens developing resistance.
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Intelligent Modulation: Not only initiates immune attack but also precisely controls the level of inflammation, preventing excessive immune damage.
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Promotes Healing: Seamlessly bridges the “defense” and “repair” processes, making it an ideal promoter of tissue regeneration.
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Naturally Safe: As an endogenous substance, it has high biocompatibility and typically does not cause strong side effects or allergic reactions.
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Our company is a modern advanced enterprise specializing in production and exportation of APIs, Pharmaceutical intermediates, plant extracts etc. Our products are widely used in medicine, health care products, cosmetics, nutritional supplements and food additives areas. Our factory covers an area of 95 acres, the proposed construction of the plant will be GMP standards, the factory environment clean and tidy, rational layout, with large and medium-sized production workshop and repocessed shop. It is equipped with advanced equipment quality inspection and research center. Those products of both quality and technical content have reached the domestic advanced level. Since its establishment, the company has attached great importance to the team training and technical reform. Our modern production equipment guarantees for a fast and effective production with a superior degree of accuracy throughout the whole production line, everything is done in-house, processing, extraction, packaging and transportation of all links, ensuring maximum quality and efficiency. We are constantly research and development new ingredients and innovative new products, have earned the respect & Admiration from the worldwide customers. After years of continuous development, company has been accumulated rich experience in international trade and customer resources, established a stable customer base and perfect marketing service network. In addition, the company has established long-term technical cooperation with experts and professors from many universities and research institutes in the province.
OPTIMIZED, AUTOMATED HIGH-YIELD PRODUCTION
ROBUST PROCESSES AND SUPPLY SECURITY
LL-37, Human acetate is a 37-residue, amphipathic, cathelicidin-derived antimicrobial peptide, which exhibits a broad spectrum of antimicrobial activity.
Research & Reference Note
LL37 | US Warehouse | Cosmetic Peptides | 99% Purity | 5mg Vials | Lyophilized Powder is listed on ECHEMI for industrial / laboratory sourcing. This listing is for industrial and laboratory research use. Product information on ECHEMI is provided for sourcing and specification reference. It is not medical advice, a clinical recommendation, or an approved therapy description. Always verify regulatory status, purity, and intended use with the supplier and applicable authorities before purchase or use.
Disclaimer: This listing is for industrial and laboratory research use. Product information on ECHEMI is provided for sourcing and specification reference. It is not medical advice, a clinical recommendation, or an approved therapy description. Always verify regulatory status, purity, and intended use with the supplier and applicable authorities before purchase or use.
Reviewed by ECHEMI Scientific Review - Platform editorial review for research chemicals