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Updated: Jul 24, 2026
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Freezing Human ES Cells
Published on: October 12, 2006
Blood freezing to nearly absolute zero temperature: -272.29 degrees C
Journal of Biomechanical Engineering
|February 1, 1981
Summary
Human red blood cells (erythrocytes) were successfully preserved using glycerol cryoprotection and ultra-low temperature freezing. Post-thaw analysis confirmed minimal cell damage, preserving essential intracellular components.
Area of Science:
- Biomedical Science
- Cryobiology
- Hematology
Background:
- Cryopreservation of human erythrocytes is crucial for blood banking and transfusion medicine.
- Developing effective cryoprotective methods is essential to minimize cell damage during freezing and thawing.
Purpose of the Study:
- To evaluate a novel cryopreservation method for human erythrocytes.
- To assess the viability and integrity of erythrocytes after ultra-low temperature storage.
Main Methods:
- Human erythrocytes were collected in Acid Citrate Dextrose (ACD) anticoagulant.
- Cells were glycerolized with glycerol, glucose, fructose, and Na2 EDTA solution.
- Samples were sealed and frozen to 0.86 K in liquid helium under high vacuum.
- Post-thaw analysis included biological assays and three-stage dialysis to remove cryoprotectants.
Main Results:
- Less than 1% hemolysis was observed after thawing and dialysis.
- Intracellular potassium levels remained within the normal range.
- Levels of 2,3-diphosphoglycerate (2,3-DPG) and adenosine triphosphate (ATP) were preserved.
Conclusions:
- The described method effectively cryopreserves human erythrocytes with minimal damage.
- Preservation of key intracellular components suggests retained cellular function.
- This technique shows promise for long-term storage of red blood cells.
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