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Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore...
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Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
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Embryonic Stem Cells00:58

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Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
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Stencil Micropatterning of Human Pluripotent Stem Cells for Probing Spatial Organization of Differentiation Fates
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Biomaterial Engineering for Controlling Pluripotent Stem Cell Fate.

Taylor B Bertucci1, Guohao Dai1

  • 1Department of Bioengineering, Northeastern University, Boston, MA 02115, USA.

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Biomaterials engineered with specific cues offer advanced control over pluripotent stem cell (PSC) differentiation for regenerative medicine. These 3D platforms enhance control over stem cell fate, aiding clinical translation.

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Area of Science:

  • Stem Cell Biology
  • Biomaterials Science
  • Regenerative Medicine

Background:

  • Pluripotent stem cells (PSCs) are crucial for tissue engineering and regenerative medicine due to their self-renewal and differentiation abilities.
  • Current PSC differentiation protocols primarily use 2D cultures and soluble factors, but environmental signals are increasingly explored.
  • Biomaterial platforms provide novel avenues for engineering stem cell niches and 3D environments.

Purpose of the Study:

  • To review biomaterial platforms engineered for controlling pluripotent stem cell (PSC) fate.
  • To explore how biophysical and immobilized biochemical cues influence stem cell differentiation.
  • To highlight biomaterial systems facilitating the clinical translation of PSC technologies.

Main Methods:

  • Review of existing literature on biomaterial platforms for PSC differentiation.
  • Analysis of how altered dimensionality, stiffness, and topography impact stem cell fate.
  • Examination of immobilized biochemical signaling cues within biomaterial systems.

Main Results:

  • Biomaterials enable precise engineering of stem cell niches and 3D environments.
  • Modulating immobilized biochemical and biophysical cues (dimensionality, stiffness, topography) enhances control over PSC differentiation.
  • Specific biomaterial culture systems show promise for clinical applications.

Conclusions:

  • Engineered biomaterials offer sophisticated control over pluripotent stem cell fate.
  • Biomaterial platforms are essential for advancing regenerative medicine and tissue engineering applications.
  • Further development of biomaterial systems is key for successful clinical translation of PSC therapies.