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Related Concept Videos

Cryo-electron Microscopy01:28

Cryo-electron Microscopy

Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological molecules and results in several artifacts. Also, the high-energy electron beam damages the sample and makes it difficult to obtain high-resolution images. These issues can be addressed using cryo-EM, which uses frozen samples and gentler electron beams. The technique was developed by Jacques Dubochet, Joachim Frank, and Richard Henderson, for...

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A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization
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A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization

Published on: August 18, 2022

Microfluidics for cryopreservation.

Young S Song1, Sangjun Moon, Leon Hulli

  • 1Bio-Acoustic-MEMS in Medicine (BAMM) Laboratory, Center for Bioengineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.

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|June 18, 2009
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Summary
This summary is machine-generated.

This study introduces a microfluidic method to reduce cell damage from osmotic shock during cryopreservation. The novel approach enhances cell viability by up to 25% compared to traditional methods.

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Area of Science:

  • Biopreservation and Cell Engineering
  • Microfluidics and Nanotechnology
  • Cellular Cryobiology

Background:

  • Cryopreservation is vital for preserving biological samples.
  • Osmotic shock from cryoprotective agents (CPAs) causes significant cell damage.
  • Conventional CPA loading/unloading methods are inefficient and harmful.

Purpose of the Study:

  • To develop a microfluidic system for controlled CPA delivery and removal.
  • To minimize osmotic stress experienced by cells during cryopreservation.
  • To improve post-thaw cell viability and functionality.

Main Methods:

  • Utilizing microfluidic channels for CPA manipulation.
  • Employing diffusion and laminar flow for precise CPA concentration control.
  • Developing a cell membrane transport model for theoretical analysis.
  • Conducting biological experiments to validate the model and approach.

Main Results:

  • The microfluidic approach significantly reduces osmotic shock compared to conventional methods.
  • Theoretical modeling accurately predicted the reduction in osmotic stress.
  • Biological experiments confirmed improved cell survivability, with an average increase of up to 25%.
  • The method demonstrated higher cell viability and functionality post-thaw.

Conclusions:

  • Microfluidic technology offers a superior platform for cell cryopreservation.
  • This method enhances cell viability and reduces variability in cryopreservation outcomes.
  • The study bridges microfluidics and biopreservation, enabling future advancements.