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Novel anti-microbial peptide SR-0379 accelerates wound healing via the PI3 kinase/Akt/mTOR pathway

Hideki Tomioka1, Hironori Nakagami2, Akiko Tenma3

  • 1Department of Clinical Gene Therapy, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka, Japan; AnGesMG, Inc., 7-7-15 Saito Bio-Incubator, Ibaraki, Osaka, Japan.

Plos One
|March 29, 2014
PubMed

Insights

A novel compound, SR-0379, derived from AG30/5C, accelerates wound healing by promoting cell growth and blood vessel formation. It also exhibits antimicrobial properties, showing potential for treating difficult wounds.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Wound Healing Research

Background:

  • A novel cationic antimicrobial peptide, AG30/5C, possesses angiogenic properties but requires optimization for clinical use.
  • Metabolite analysis of AG30/5C led to the development of an improved compound, SR-0379.

Purpose of the Study:

  • To evaluate the wound healing potential of SR-0379.
  • To investigate the mechanisms underlying SR-0379's effects on cell proliferation, angiogenesis, and antimicrobial activity.

Main Methods:

  • Assessed proliferation of human dermal fibroblast cells (NHDFs) and tube formation of human umbilical vein endothelial cells (HUVECs).
  • Investigated the involvement of the PI3 kinase-Akt-mTOR pathway and integrin-mediated interactions.
  • Evaluated SR-0379's antimicrobial activity against various bacteria and fungi.
  • Tested SR-0379 efficacy in rat wound healing models, including diabetic and infected wounds, comparing it to fibroblast growth factor 2 (FGF2).

Main Results:

  • SR-0379 enhanced NHDF proliferation via the PI3 kinase-Akt-mTOR pathway and integrin interactions.
  • SR-0379 promoted HUVEC tube formation in co-culture with NHDFs.
  • The compound demonstrated broad-spectrum antimicrobial activity, including against drug-resistant strains.
  • SR-0379 significantly accelerated wound healing in rat models, outperforming FGF2, by enhancing angiogenesis, granulation tissue formation, and cell proliferation.

Conclusions:

  • SR-0379 exhibits significant potential for drug development in wound repair.
  • Its multifaceted action, including promoting angiogenesis and possessing antimicrobial effects, makes it suitable for critical colonization conditions.

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