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Phosphoramidate-based peptidomimetic inhibitors of membrane type-1 matrix metalloproteinase

Desiree E Mendes1, Annie Wong-On-Wing1, Clifford E Berkman1

  • 1a Department of Chemistry , Washington State University , Pullman , Washington , DC , USA.

Journal of Enzyme Inhibition and Medicinal Chemistry
|March 28, 2015
PubMed

Insights

Researchers identified a novel peptidomimetic scaffold that inhibits membrane-type I matrix metalloproteinases (MT1-MMP) at submicromolar concentrations. This discovery offers a promising avenue for developing new cancer therapeutics targeting MT1-MMP.

Area of Science:

  • Biochemistry
  • Enzymology
  • Drug Discovery

Background:

  • Membrane-type I matrix metalloproteinases (MT1-MMP) are crucial for extracellular matrix remodeling and homeostasis.
  • Overexpression of MT1-MMP is linked to cancer metastasis and progression, making it a significant therapeutic target.
  • MT1-MMP is an upregulated biomarker in various cancers, highlighting its clinical relevance.

Purpose of the Study:

  • To synthesize and evaluate a pilot library of phosphoramidate-based peptidomimetics as potential inhibitors of MT1-MMP.
  • To identify novel scaffolds with potent inhibitory activity against MT1-MMP.
  • To determine optimal residue preferences (P1 and P1' positions) for MT1-MMP inhibition within the identified scaffold.

Main Methods:

  • Synthesis of a small pilot library of peptidomimetics featuring a phosphoramidate core.
  • Assay development to test the inhibitory potency of synthesized compounds against MT1-MMP.
  • Structure-activity relationship analysis to identify key residues contributing to inhibitory activity.

Main Results:

  • Identification of a novel two-residue peptidomimetic scaffold with submicromolar inhibitory potency against MT1-MMP.
  • Determination that valine is the preferred P1 residue and leucine is favored in the P1' position for this scaffold.
  • Observation of steric tolerance at the N-terminus, suggesting potential for further scaffold optimization.

Conclusions:

  • The novel peptidomimetic scaffold demonstrates significant potential as a starting point for developing MT1-MMP inhibitors.
  • The established structure-activity relationships provide a rational basis for designing second-generation inhibitors with enhanced affinity and efficacy.
  • This research contributes to the ongoing effort to develop targeted therapies for cancers associated with MT1-MMP overexpression.
Keywords:
InhibitorMMP1MT1-MMPphosphoramidate

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