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Three-dimensional paper-based model for cardiac ischemia.

Bobak Mosadegh1, Borna E Dabiri, Matthew R Lockett

  • 1Wyss Institute for Biologically Inspired Engineering, Harvard University, 60 Oxford Street, Cambridge, MA, 02138, USA; Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA.

Advanced Healthcare Materials
|February 28, 2014
PubMed
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This study presents a novel 3D paper-based culture system to model cardiac ischemia. The system effectively simulates cellular interactions and molecular gradients, revealing chemokine-induced fibroblast migration during ischemic stress.

Area of Science:

  • Biomedical Engineering
  • Cardiovascular Research
  • Tissue Engineering

Background:

  • Traditional in vitro ischemia models lack the complexity of 3D tissue cellular interactions and molecular gradients.
  • Replicating the native cardiac microenvironment in vitro is crucial for understanding ischemia-related pathologies.

Purpose of the Study:

  • To develop and validate a paper-based 3D culture system that mimics in vivo cardiac ischemia.
  • To investigate cellular responses, specifically chemokine-mediated fibroblast migration, under simulated ischemic conditions.

Main Methods:

  • Fabrication of a multi-layered, paper-based 3D scaffold using hydrogel-embedded cells.
  • Modulation of oxygen and glucose mass transport to induce localized ischemia in the lower layers.
  • Analysis of cardiomyocyte and fibroblast interactions and migration patterns using microscopy and molecular assays.
Keywords:
3D cell culturecardiac ischemiacardiomyocytesco-culturegradients

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Main Results:

  • The 3D system successfully recapitulated key aspects of ischemia, including molecular gradients.
  • Ischemic stress in cardiomyocytes triggered chemokine secretion.
  • Secreted chemokines induced migration of adjacent fibroblasts towards the ischemic region.

Conclusions:

  • The paper-based 3D culture system provides a valuable platform for in vitro mechanistic studies of cardiac ischemia.
  • This model enhances understanding of cell-cell interactions and motility in a simulated ventricular tissue environment.
  • The system's ability to modulate mass transport offers precise control for studying ischemic responses.