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Related Concept Videos

Stem Cell Culture01:17

Stem Cell Culture

Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...

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Isolation, In Vitro Expansion, and Characterization of Mesenchymal Stem Cells from Mouse Epididymal Adipose Tissue
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Defined high protein content surfaces for stem cell culture.

Michael R Doran1, Jessica E Frith, Andrew B J Prowse

  • 1Tissue Engineering and Microfluidics Laboratory, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Queensland 4072, Australia.

Biomaterials
|April 10, 2010
PubMed
Summary

Researchers developed a simple method to coat surfaces with proteins, improving stem cell culture. This technique enhances human embryonic stem cell attachment and directs mesenchymal stem cell differentiation for advanced therapies.

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Isolation of Human Mesenchymal Stem Cells and their Cultivation on the Porous Bone Matrix
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Isolation of Human Mesenchymal Stem Cells and their Cultivation on the Porous Bone Matrix

Published on: February 9, 2015

Area of Science:

  • Biomaterials Science
  • Stem Cell Biology
  • Tissue Engineering

Background:

  • Clinical applications of stem cell therapies depend on understanding stem cell fate mechanisms.
  • Developing defined culture environments for human embryonic stem cells (hESCs) and mesenchymal stem cells (MSCs) is crucial but challenging.
  • Current strategies for creating defined stem cell culture surfaces are limited.

Purpose of the Study:

  • To present a simple, effective, and efficient method for functionalizing surfaces with proteins or peptides.
  • To create stable, defined surfaces capable of directing stem cell behavior.
  • To enable the development of defined stem cell culture conditions and elucidate biological processes for stem cell therapies.

Main Methods:

  • Utilized a Layer-by-Layer (LbL) self-assembled surface composed of hyaluronic acid (HA) and chitosan (CHI).
  • Functionalized the LbL HA-CHI surface by cross-linking extracellular matrix (ECM) proteins or peptides using a carbodiimide cross-linker (NHS/EDC).
  • Assessed surface temporal stability, protein deposition efficiency, and biological outcomes, including hESC attachment and MSC osteogenic differentiation.

Main Results:

  • Achieved high protein deposition efficiencies exceeding 50% on the HA-CHI surface.
  • Demonstrated superior protein retention and surface stability compared to traditional cross-linking methods.
  • Successfully directed specific hESC attachment efficiencies and MSC osteogenic differentiation on the defined protein-modified surfaces.

Conclusions:

  • The developed method provides a simple, scalable approach for creating defined stem cell culture surfaces.
  • Protein-modified HA-CHI surfaces exhibit good temporal stability and can direct specific stem cell behaviors.
  • This technique facilitates the advancement of defined stem cell culture and the study of stem cell biology for therapeutic applications.