Collagen-binding VEGF targeting the cardiac extracellular matrix promotes recovery in porcine chronic myocardial infarction

Biomater Sci. 2018 Jan 30;6(2):356-363. doi: 10.1039/c7bm00891k.

Abstract

An effective therapy for chronic myocardial infarction (MI) has yet to be developed. Vascular endothelial growth factor (VEGF) promotes angiogenesis and improves cardiac function after MI. However, non-targeted delivery of VEGF decreases its therapeutic efficacy. In this study, for targeting the cardiac extracellular matrix, a collagen-binding domain (CBD) VEGF was used to bind specifically to the collagen-rich cardiac extracellular matrix. When intramyocardially injected into the peri-infarct region of a chronically infarcted porcine heart, CBD-VEGF attenuated the remodeling of the left ventricle with a decreased infarct size and promoted cardiomyocyte survival and angiogenesis 3 months after injection. In the 12-month trial, mature vessel networks and myocardium-like tissues were observed in the infarct region after CBD-VEGF injection. Also these beneficial effects might derive from CBD-VEGF significantly protecting cardiomyocytes from apoptosis and recruiting cardiac progenitor cells to the infarcted region. These results demonstrated that CBD-VEGF could be a promising therapeutic strategy for chronic MI.

MeSH terms

  • Animals
  • Apoptosis
  • Binding Sites
  • Collagen / metabolism*
  • Extracellular Matrix / metabolism
  • Heart Ventricles / drug effects
  • Heart Ventricles / pathology
  • Injections, Intralesional
  • Male
  • Myocardial Infarction / drug therapy*
  • Myocytes, Cardiac / drug effects
  • Myocytes, Cardiac / metabolism
  • Neovascularization, Physiologic
  • Peptide Fragments / administration & dosage
  • Peptide Fragments / pharmacology
  • Peptide Fragments / therapeutic use*
  • Protein Binding
  • Swine
  • Vascular Endothelial Growth Factor A / chemistry*

Substances

  • Peptide Fragments
  • Vascular Endothelial Growth Factor A
  • Collagen