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Related Concept Videos

iPS Cell Differentiation01:22

iPS Cell Differentiation

The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.

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Spatially organized in vitro models instruct asymmetric stem cell differentiation.

Yi-Chin Toh1, Katarina Blagovic, Hanry Yu

  • 1Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA.

Integrative Biology : Quantitative Biosciences From Nano to Macro
|October 27, 2011
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Summary

This study introduces a new method, Differential Environmental Spatial Patterning (δESP), to organize microenvironments around stem cells. This technique helps understand how spatial organization influences cell fate decisions and embryonic development.

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2D and 3D Human Induced Pluripotent Stem Cell-Based Models to Dissect Primary Cilium Involvement during Neocortical Development
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Patterning the Geometry of Human Embryonic Stem Cell Colonies on Compliant Substrates to Control Tissue-Level Mechanics
10:04

Patterning the Geometry of Human Embryonic Stem Cell Colonies on Compliant Substrates to Control Tissue-Level Mechanics

Published on: September 28, 2019

Area of Science:

  • Developmental Biology
  • Stem Cell Biology
  • Tissue Engineering

Background:

  • Environmental factors regulating stem cell differentiation are known, but their spatial organization within heterogeneous niches is not.
  • Understanding spatial organization is crucial for deciphering stem cell fate specification.
  • Current models lack the ability to precisely control spatial microenvironments for stem cells.

Purpose of the Study:

  • To develop and utilize spatially organized stem cell developmental models to investigate the role of space in cell fate specification.
  • To decouple and analyze the influence of cell and niche organization on embryonic stem cell (ESC) self-renewal versus differentiation.
  • To model early embryonic patterning in vitro using controlled spatial organization of different cell types.

Main Methods:

  • Developed Differential Environmental Spatial Patterning (δESP) using sequential micropatterning to create defined microenvironments around single ESC colonies.
  • Applied δESP to systematically vary microenvironment composition and spatial arrangement.
  • Used δESP to mimic proximal-distal (PD) patterning during mouse epiblast development by spatially organizing ESCs with two extraembryonic environments.

Main Results:

  • δESP successfully organized distinct microenvironments around ESCs, enabling the study of spatial effects on cell fate.
  • The study successfully decoupled the roles of cell and niche organization in ESC fate decisions.
  • Spatially organizing ESCs with extraembryonic environments in vitro was sufficient to recapitulate proximal-distal (PD) patterning, a key embryonic developmental step.

Conclusions:

  • Spatial organization of microenvironments plays a critical role in stem cell fate specification.
  • The developed δESP method provides a powerful tool for studying the impact of spatial cues in developmental biology.
  • This in vitro model demonstrates that precise spatial arrangement of cell types can drive key embryonic patterning events.