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Related Concept Videos

The Extracellular Matrix01:29

The Extracellular Matrix

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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.
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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...
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The stem cell niche is the dynamic microenvironment where stem cells reside. Inside these niches, the cells may remain undifferentiated, undergo high self-renewal, or become lineage-specific progenitors. Stem cells coexist with other niche cells, such as stromal cells. They also interact closely with the ECM. Cell-cell and cell-matrix communication occur via adhesion molecules or soluble factors that signal the stem cells and determine their fate. Stromal cells also provide survival signals to...
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Preparation of Tunable Extracellular Matrix Microenvironments to Evaluate Schwann Cell Phenotype Specification
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Synthetic Extracellular Microenvironment for Modulating Stem Cell Behaviors.

Prafulla Chandra1, Sang Jin Lee1

  • 1Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA.

Biomarker Insights
|June 25, 2015
PubMed
Summary
This summary is machine-generated.

Developing advanced biomaterials as synthetic microenvironments can control stem cell behavior for tissue engineering and regenerative medicine. This approach mimics natural stem cell niches to improve therapeutic outcomes for various diseases.

Keywords:
biomaterialsdifferentiationdrug/protein delivery systemstem cell nichestem cellssubstrate elasticitysurface modificationtopography

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Area of Science:

  • Biomaterials Science
  • Stem Cell Biology
  • Regenerative Medicine

Background:

  • Stem cells possess self-renewal and differentiation capabilities, crucial for tissue engineering and regenerative medicine.
  • Stem cell behavior is regulated by complex signals within their natural microenvironment (niche).
  • Current methods struggle to fully replicate these niche signals, limiting clinical applications of stem cells.

Purpose of the Study:

  • To develop advanced biomaterials that create synthetic microenvironments to precisely control stem cell fate.
  • To overcome limitations in current stem cell regulation for enhanced therapeutic potential.

Main Methods:

  • Investigating three-dimensional synthetic microenvironments that mimic natural extracellular matrix (ECM) and growth factors.
  • Utilizing surface immobilization and controlled release of bioactive molecules within these synthetic niches.
  • Employing these biomaterials as substrates, tissue templates, and cell delivery vehicles.

Main Results:

  • Synthetic microenvironments demonstrate potential for directing stem cell fate in vitro.
  • These materials can serve as tissue templates to guide neo-tissue formation in vitro and in vivo.
  • The biomaterials show promise as delivery vehicles for in vivo cell therapy.

Conclusions:

  • Advancements in synthetic extracellular microenvironments offer a promising strategy for regenerative medicine.
  • These intelligent biomaterials hold potential for developing novel therapies for currently untreatable conditions.
  • Mimicking the stem cell niche with biomaterials is key to unlocking stem cell potential in clinical settings.