ADAM8 as a drug target in pancreatic cancer

Nat Commun. 2015 Jan 28:6:6175. doi: 10.1038/ncomms7175.

Abstract

Pancreatic ductal adenocarcinoma (PDAC) has a grim prognosis with <5% survivors after 5 years. High expression levels of ADAM8, a metalloprotease disintegrin, are correlated with poor clinical outcome. We show that ADAM8 expression is associated with increased migration and invasiveness of PDAC cells caused by activation of ERK1/2 and higher MMP activities. For biological function, ADAM8 requires multimerization and associates with β1 integrin on the cell surface. A peptidomimetic ADAM8 inhibitor, BK-1361, designed by structural modelling of the disintegrin domain, prevents ADAM8 multimerization. In PDAC cells, BK-1361 affects ADAM8 function leading to reduced invasiveness, and less ERK1/2 and MMP activation. BK-1361 application in mice decreased tumour burden and metastasis of implanted pancreatic tumour cells and provides improved metrics of clinical symptoms and survival in a Kras(G12D)-driven mouse model of PDAC. Thus, our data integrate ADAM8 in pancreatic cancer signalling and validate ADAM8 as a target for PDAC therapy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • ADAM Proteins / antagonists & inhibitors
  • ADAM Proteins / metabolism*
  • Animals
  • Blotting, Western
  • Carcinoma, Pancreatic Ductal / enzymology
  • Carcinoma, Pancreatic Ductal / pathology
  • Cell Line, Tumor
  • Cell Movement / drug effects
  • Extracellular Space / metabolism
  • Focal Adhesion Protein-Tyrosine Kinases / metabolism
  • Gene Knockdown Techniques
  • Humans
  • Hydroxamic Acids / pharmacology
  • Hydroxamic Acids / therapeutic use
  • Integrin beta1 / metabolism
  • Kaplan-Meier Estimate
  • Matrix Metalloproteinase 14 / metabolism
  • Matrix Metalloproteinase 2 / metabolism
  • Membrane Proteins / antagonists & inhibitors
  • Membrane Proteins / metabolism*
  • Mice
  • Molecular Targeted Therapy*
  • Neoplasm Invasiveness
  • Pancreatic Neoplasms / drug therapy*
  • Pancreatic Neoplasms / enzymology
  • Pancreatic Neoplasms / pathology
  • Peptides, Cyclic / pharmacology
  • Peptides, Cyclic / therapeutic use
  • Phosphorylation / drug effects
  • Protein Binding / drug effects
  • Protein Multimerization / drug effects
  • Protein Processing, Post-Translational
  • Signal Transduction / drug effects

Substances

  • Hydroxamic Acids
  • Integrin beta1
  • Membrane Proteins
  • Peptides, Cyclic
  • Focal Adhesion Protein-Tyrosine Kinases
  • ADAM Proteins
  • ADAM8 protein, human
  • Matrix Metalloproteinase 2
  • Matrix Metalloproteinase 14