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Handling individual mammalian embryos using microfluidics
I K Glasgow1, H C Zeringue, D J Beebe
1Beckman Institute for Advanced Science and Technology and the Department of Mechanical Engineering, University of Wisconsin, Madison 53706, USA.
IEEE Transactions on Bio-Medical Engineering
|May 9, 2001
Summary
Researchers developed microfluidic systems to precisely move individual mouse embryos. This technology enables controlled transport and retention of embryos for improved developmental studies.
Area of Science:
- Biotechnology
- Developmental Biology
- Microfluidics
Background:
- Preimplantation mouse embryos require careful handling during in vitro culture and research.
- Existing methods for embryo manipulation can be labor-intensive and may introduce variability.
Purpose of the Study:
- To design, build, and test a microfluidic system for automated transport of individual preimplantation mouse embryos.
- To demonstrate controlled movement and retention of embryos within a microfluidic network.
Main Methods:
- Fabrication of microfluidic channels with specific dimensions (160-200 microm deep, 250-400 microm wide).
- Generation of controlled fluid flow (100 nl/s) using pressure gradients (1 Pa/mm).
- Observation of embryo (100-150 microm diameter) rolling behavior at half fluid speed.
Main Results:
- Successful transport of individual mouse embryos through the microfluidic channels.
- Embryos rolled along channel bottoms at a predictable speed relative to fluid flow.
- Demonstrated ability to direct embryos to specific locations like culture and retrieval wells.
Conclusions:
- Microfluidic systems can reliably transport and position preimplantation mouse embryos.
- This technology offers a precise and potentially automated method for embryo handling in research.
- The system facilitates controlled embryo management for applications in developmental biology and assisted reproduction.