The Effects of the Human Host Defense Peptide LL-37 on Endothelial Cells

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Cathelicidins are a family of antimicrobial peptides that are found in several mammalian species.They consist of a highly conserved N-terminal prosequences (a cathelin-like domain) and variable C-terminal sequences that is retained within the mature antibacterial peptide. LL-37 is the sole mature cathelicidin peptide found in humans. It is composed of 37 amino acids and exhibits an α-helical structure. Although LL-37 exerts a broad spectrum of antimicrobial activities against bacteria, fungi, and certain viruses, there is currently much focus on the various effects of the peptide on host cells. Growing evidence suggests that LL-37 binds to host cell surface receptors and induces immunomodulatory responses in neutrophils, monocytes/macrophages, dendritic cells, T cells, mast cells, and epithelial cells. LL-37 also acts on endothelial cells and induces cell proliferation, angiogenesis, upregulated adhesion molecule expression, and increased cell stiffness. Moreover, LL-37 is incorporated into host cells and modulates host cell responses by itself or by forming a complex with host/pathogen-derived components. In this review, we describe the effects of LL-37 on endothelial cells and present the findings of our recent study, which revealed that LL-37 contributes to lipopolysaccharide (LPS) clearance by liver sinusoidal endothelial cells by forming complexes with Gram-negative LPS. Finally, we discuss the involvement of LL-37 in atherosclerosis and regeneration.

収録刊行物

  • 順天堂醫事雑誌

    順天堂醫事雑誌 62(2), 105-111, 2016

    順天堂医学会

各種コード

  • NII論文ID(NAID)
    130005162205
  • NII書誌ID(NCID)
    AA1262207X
  • 本文言語コード
    ENG
  • 雑誌種別
    大学紀要
  • ISSN
    2187-9737
  • NDL 記事登録ID
    027529555
  • NDL 請求記号
    Z19-432
  • データ提供元
    NDL  J-STAGE 
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