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Patterning of Embryonic Stem Cells Using the Bio Flip Chip
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Microfluidic-based patterning of embryonic stem cells for in vitro development studies.

Shalu Suri1, Ankur Singh, Anh H Nguyen

  • 1School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA. hang.lu@gatech.edu.

Lab on a Chip
|October 12, 2013
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Summary

A new microfluidic technique enables high-throughput fusion of embryoid bodies, creating complex 3D structures that mimic early mammalian development and gastrulation. This method allows for controlled cell differentiation and the study of embryonic patterns in vitro.

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Area of Science:

  • Developmental Biology
  • Stem Cell Biology
  • Bioengineering

Background:

  • Studying mammalian embryogenesis in vitro requires methods to create complex 3D cellular structures and assess their phenotypes.
  • Current techniques struggle to reproducibly generate complex, spatially heterogeneous microenvironments mimicking developmental processes.
  • Engineering such microenvironments is crucial for understanding development, tissue remodeling, and wound healing.

Purpose of the Study:

  • To develop a higher-throughput in vitro method for recapitulating mammalian embryogenesis.
  • To engineer complex multicellular assemblies with controlled spatial and temporal differentiation patterns.
  • To create a tool for studying embryonic development and cell behaviors in a reproducible manner.

Main Methods:

  • Development of a microfluidic device for a multicellular embryoid body (EB) fusion technique.
  • Generation of over 60 conjoined EBs overnight using the microfluidic device.
  • Temporal delivery of bone morphogenic protein 4 (BMP4) to EBs to induce mesoderm differentiation.

Main Results:

  • The EB fusion technique generates developmentally relevant embryonic patterns more efficiently than manual assembly.
  • The system emulates key processes of early mammalian development, specifically mouse gastrulation.
  • Recapitulation of embryonic day 6.5 (E6.5) development, including BMP4-induced mesoderm differentiation and Brachyury-T-green fluorescent protein (T-GFP) expression.

Conclusions:

  • The microfluidic EB fusion technique offers a robust and scalable platform for in vitro embryogenesis research.
  • This approach enables the creation of complex, spatially controlled microenvironments for studying developmental biology.
  • The method facilitates rapid manipulation of hundreds of cell aggregates, allowing controlled differentiation and investigation of embryonic patterns.