2. Academic Validation
  3. The Effects of a Novel Series of KTTKS Analogues on Cytotoxicity and Proteolytic Activity

The Effects of a Novel Series of KTTKS Analogues on Cytotoxicity and Proteolytic Activity

  • Molecules. 2019 Oct 15;24(20):3698. doi: 10.3390/molecules24203698.
Urszula Tałałaj 1,  Paulina Uścinowicz 2,  Irena Bruzgo 3,  Arkadiusz Surażyński 4,  Ilona Zaręba 5,  Agnieszka Markowska 6
Affiliations

Affiliations

  • 1 Department of Organic Chemistry, Medical University of Białystok, Białystok 15-089, Poland. [email protected].
  • 2 Department of Organic Chemistry, Medical University of Białystok, Białystok 15-089, Poland. [email protected].
  • 3 Department of Organic Chemistry, Medical University of Białystok, Białystok 15-089, Poland. [email protected].
  • 4 Department of Medicinal Chemistry, Medical University of Białystok, Białystok 15-089, Poland. [email protected].
  • 5 Department of Medicinal Chemistry, Medical University of Białystok, Białystok 15-089, Poland. [email protected].
  • 6 Department of Organic Chemistry, Medical University of Białystok, Białystok 15-089, Poland. [email protected].
PMID: 31618846 DOI: 10.3390/molecules24203698
Abstract

KTTKS is a matrikine that originates from the proteolytic hydrolysis of collagen. This peptide stimulates ECM production and types I and III collagen expression in vitro. A more stable form of KTTKS is pal-KTTKS, known as Matrixyl® or palmitoyl pentapeptide-3. A series of novel pentapeptides, analogues of KTTKS with the general formula X-KTTKS-OH(NH2), where X = acetyl, lipoyl, palmitoyl residues, was designed and synthesized. Their effect on amidolytic activity of urokinase, Thrombin, trypsin, plasmin, t-PA, and Kallikrein were tested. Cytotoxic tests on fibroblasts, as well as collagen and DNA biosynthesis tests for selected Peptides, were also carried out. The test results showed that the most active plasmin inhibitors were palmitoyl Peptides, whether in acid or amide form. No biological effects of lysine modification to arginine in the synthesized Peptides were found. None of the synthesized Peptides was not cytotoxic on fibroblasts, and three of them showed cell growth. These three compounds showed no concentration-activity relationship in the collagen and DNA biosynthesis assays.

Keywords

KTTKS; collagen biosynthesis; cosmetic peptides; cytotoxity; palmitoyl pentapeptide; plasmin inhibitors.

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