Unique features of human cathelicidin LL-37

Area of Science:

• Biochemistry
• Immunology
• Molecular Biology

Background:

• Cathelicidins are endogenous antimicrobial peptides crucial for host defense against pathogens.
• Human cathelicidin LL-37 is a significant effector molecule with diverse biological activities.

Purpose of the Study:

• To review the expression, structure, properties, and function of human cathelicidin LL-37.
• To explore the therapeutic potential of LL-37 in treating bacterial and viral diseases, cancers, and wounds.

Main Methods:

• Literature review of studies on cathelicidin LL-37.
• Analysis of LL-37's mechanisms of action against microbes and cancer cells.
• Evaluation of LL-37's role in inflammation, angiogenesis, and apoptosis.

Main Results:

• LL-37 exhibits broad-spectrum antimicrobial activity, including anti-biofilm and anti-parasitic effects.
• LL-37 modulates tumor growth and metastasis, showing potential in cancer therapy by selectively targeting cancer cells.
• LL-37 plays a dual role in cancer, potentially aiding in cancer cell killing but also participating in carcinogenesis.

Conclusions:

• Human cathelicidin LL-37 possesses significant therapeutic potential for infectious diseases, cancers, and wound healing.
• LL-37's unique properties make it a promising template for developing novel antimicrobial and antiviral drugs.
• Further research into LL-37's complex roles is warranted for optimized therapeutic applications.