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Significance of the LL-37 Peptide Delivered from Human Cathelicidin in the Pathogenesis, Treatment, and Diagnosis of Sepsis

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07 set 2025
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Fig 1.

The pleiotropic function of human cathelicidin LL-37. In the extracellular environment, the LL-37 peptide has various functions resulting from its ability to activate certain plasma membrane receptors and/or to insert into the plasma membrane, thereby disrupting the integrity of the plasma membrane. LL-37 may also interact with substances that build microbial cells and components of the biofilm matrix. IL, interleukin; LPS, lipopolysaccharide; NETs, neutrophil extracellular traps; TNF-α, tumor necrosis factor-α.
The pleiotropic function of human cathelicidin LL-37. In the extracellular environment, the LL-37 peptide has various functions resulting from its ability to activate certain plasma membrane receptors and/or to insert into the plasma membrane, thereby disrupting the integrity of the plasma membrane. LL-37 may also interact with substances that build microbial cells and components of the biofilm matrix. IL, interleukin; LPS, lipopolysaccharide; NETs, neutrophil extracellular traps; TNF-α, tumor necrosis factor-α.

Fig 2.

Scheme of LL-37 peptide expression by immune cells during homeostatic balance (A) and during sepsis (B).
Scheme of LL-37 peptide expression by immune cells during homeostatic balance (A) and during sepsis (B).

Fig 3.

Ability of the peptide LL-37 to regulate the stiffness and cytoskeleton organization of the endothelial cell. EDHF, endothelium-derived hyperpolarizing factor; FPRL1/ALX, formyl peptide receptor-like 1/lipoxin A4 receptor; NO, nitric oxide; P2X7/purinergic channel receptor.
Ability of the peptide LL-37 to regulate the stiffness and cytoskeleton organization of the endothelial cell. EDHF, endothelium-derived hyperpolarizing factor; FPRL1/ALX, formyl peptide receptor-like 1/lipoxin A4 receptor; NO, nitric oxide; P2X7/purinergic channel receptor.
Lingua:
Inglese
Frequenza di pubblicazione:
1 volte all'anno
Argomenti della rivista:
Medicina, Scienze medicali di base, Biochimica, Immunologia, Medicina clinica, Medicina clinica, altro, Chimica clinica