Transportan 10 improves the pharmacokinetics and pharmacodynamics of vancomycin

Sci Rep. 2019 Mar 1;9(1):3247. doi: 10.1038/s41598-019-40103-w.

Abstract

In the presented study, transportan 10 (TP10), an amphipathic cell penetrating peptide (CPP) with high translocation activity, was conjugated with vancomycin (Van), which is known for poor access to the intracellular bacteria and the brain. The antibacterial activity of the conjugates was tested on selected clinical strains of methicillin-resistant Staphylococcus aureus (MRSA) and Enterococcus sp. It turned out that all of them had superior antimicrobial activity in comparison to that of free Van, which became visible particularly against clinical MRSA strains. Furthermore, one of the conjugates was tested against MRSA - infected human cells. With respect to them, this compound showed high bactericidal activity. Next, the same conjugate was screened for its capacity to cross the blood brain barrier (BBB). Therefore, qualitative and quantitative analyses of the conjugate's presence in the mouse brain slices were carried out after its iv administration. They indicated the conjugate's presence in the brain in amount >200 times bigger than that of Van. The conjugates were safe with respect to erythrocyte toxicity (erythrocyte lysis assay). Van in the form of a conjugate with TP10 acquires superior pharmacodynamic and pharmacokinetic.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Anti-Bacterial Agents / chemical synthesis
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / pharmacology
  • Cell-Penetrating Peptides / chemical synthesis
  • Cell-Penetrating Peptides / chemistry
  • Cell-Penetrating Peptides / pharmacology*
  • Chromatography, High Pressure Liquid
  • Chromatography, Reverse-Phase
  • Erythrocytes / drug effects
  • HEK293 Cells
  • Hemolysis / drug effects
  • Humans
  • Methicillin-Resistant Staphylococcus aureus / drug effects
  • Mice
  • Microbial Sensitivity Tests
  • Molecular Weight
  • Recombinant Fusion Proteins / chemical synthesis
  • Recombinant Fusion Proteins / chemistry
  • Recombinant Fusion Proteins / pharmacology*
  • Sheep
  • Tissue Distribution / drug effects
  • Vancomycin / chemical synthesis
  • Vancomycin / chemistry
  • Vancomycin / pharmacokinetics*
  • Vancomycin / pharmacology*

Substances

  • Anti-Bacterial Agents
  • Cell-Penetrating Peptides
  • Recombinant Fusion Proteins
  • transportan-10
  • Vancomycin