Related Experiment Video
Updated: Jul 1, 2026
11:10
Cryopreservation of Preimplantation Embryos of Cattle, Sheep, and Goats
Published on: August 5, 2011
30.6K
An all-in-one microfluidic cryopreservation system and protocols with gradually increasing CPA concentration
Tianhang Yang1,2, Xinbei Lv3, Yuqiao Bai4
1Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China. wangjx@sibet.ac.cn.
Lab on a Chip
|January 16, 2025
Summary
This study introduces a microfluidic chip for automated biosample cryopreservation. The integrated platform minimizes cell damage during cryoprotective agent (CPA) addition and removal, optimizing trace sample preservation.
Area of Science:
- Biotechnology
- Microfluidics
- Cryobiology
Background:
- Traditional cryopreservation requires manual handling for cryoprotective agent (CPA) addition and removal, risking cell damage from osmotic shock and heat.
- These manual processes are inefficient, especially for preserving small or trace biosamples.
Purpose of the Study:
- To develop an integrated microfluidic platform for automated and low-damage biosample cryopreservation.
- To optimize CPA addition and removal processes for trace sample preservation.
Main Methods:
- A three-layer microfluidic chip (30 × 30 × 4 mm³) was designed to integrate CPA addition, storage, removal, and resuspension.
- Utilized pre-generated increasing CPA concentrations and microfluidic structures for controlled addition and on-chip removal.
- Implemented a novel dead-end micro valve strategy for mixing and resuspension.
Main Results:
- Demonstrated successful on-chip sample enrichment and CPA removal.
- Validated the integrated microfluidic platform's functionality through a complete cryopreservation process.
- Achieved low-damage cryopreservation, suitable for trace samples.
Conclusions:
- The developed microfluidic platform offers an automated, all-in-one solution for cryopreservation.
- This approach significantly reduces manual labor and potential cell damage.
- The platform is particularly beneficial for optimizing the preservation of trace biosamples.
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