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Related Concept Videos

Overview of Cell-Matrix Interactions01:24

Overview of Cell-Matrix Interactions

The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...
The Extracellular Matrix01:29

The Extracellular Matrix

Overview
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
The Extracellular Matrix01:42

The Extracellular Matrix

Overview

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Ultrathin Porated Elastic Hydrogels As a Biomimetic Basement Membrane for Dual Cell Culture
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Cell-material interactions on biphasic polyurethane matrix.

Patrick Dicesare1, Wade M Fox, Michael J Hill

  • 1Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, USA.

Journal of Biomedical Materials Research. Part A
|December 21, 2012
PubMed
Summary
This summary is machine-generated.

Nanostructured synthetic matrices guide human mesenchymal stem cells (MSCs) by controlling their adhesion, proliferation, and migration. The nanoscale phase morphology of these biodegradable polyurethanes is key to regulating cell behavior for tissue regeneration.

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Stem Cell Biology

Background:

  • Cell-matrix interactions are crucial for stem cell fate in tissue engineering.
  • Nanoscale features of the extracellular matrix influence cell behavior.
  • Synthetic matrices are engineered to mimic natural cues for controlling cell functions.

Purpose of the Study:

  • To demonstrate how nanostructured phase morphology of synthetic matrices controls human mesenchymal stem cell (MSC) behavior.
  • To investigate the role of biodegradable polyurethane composition in modulating nanoscale architecture.
  • To establish the relevance of matrix phase morphology in regulating cell-matrix interactions.

Main Methods:

  • Designed biodegradable polyurethanes (PU) with polyester soft segments and specific hard segments.
  • Modified PU composition to alter nanoscale phase morphology.
  • Examined the effect of modulated PU morphology on MSC adhesion, proliferation, organization, and migration.

Main Results:

  • Nanostructured biodegradable polyurethanes with biphasic morphology were created.
  • Altering PU composition modulated its nanoscale morphological architecture.
  • MSCs exhibited distinct cellular features in response to the nanoscale morphology of the biphasic PU matrix, demonstrating sensitivity to topographical cues.

Conclusions:

  • The nanoscale phase morphology of synthetic matrices significantly controls MSC behavior.
  • Understanding and engineering matrix morphology is vital for regulating cell-matrix interactions.
  • This approach offers insights for advancing tissue regeneration strategies using synthetic biomaterials.