New cyclic tetrapeptides from Nonomuraea sp. TA-0426 that inhibit glycine transporter type 1 (GlyT1)

Bioorg Med Chem Lett. 2008 Dec 15;18(24):6321-3. doi: 10.1016/j.bmcl.2008.10.104. Epub 2008 Oct 26.

Abstract

In the course of our search for natural antipsychotic agents, we isolated five new cyclic tetrapeptides from the fermentation broth of Nonomuraea sp. TA-0426. These compounds turned out to be analogues of WSS2220, which had been produced by the same actinomycete and showed strong inhibitory activity against GlyT1. Four of the present peptides exhibit more potent GlyT1 inhibitory activities than WSS2220.

MeSH terms

  • Actinomyces / metabolism*
  • Antipsychotic Agents / chemical synthesis
  • Antipsychotic Agents / pharmacology*
  • Cell Line, Tumor
  • Dose-Response Relationship, Drug
  • Glycine / chemistry*
  • Glycine Plasma Membrane Transport Proteins / antagonists & inhibitors*
  • Glycine Plasma Membrane Transport Proteins / chemistry*
  • Humans
  • Inhibitory Concentration 50
  • Isoleucine / chemistry
  • Magnetic Resonance Spectroscopy
  • Methylation
  • Models, Chemical
  • Peptides / chemistry*
  • Structure-Activity Relationship
  • Time Factors

Substances

  • Antipsychotic Agents
  • Glycine Plasma Membrane Transport Proteins
  • Peptides
  • Isoleucine
  • Glycine