Related Experiment Videos
A simple method for controlled freezing of human donor corneae.
Ophthalmic Research
|January 1, 1986
Summary
Researchers developed a simple method for freezing human donor cells using dimethyl sulfoxide (DMSO). This technique ensures reproducible freezing curves and demonstrates definite cell survival after postculture, optimizing cell preservation for research.
Area of Science:
- Cryobiology
- Cell Biology
- Tissue Engineering
Background:
- Cryopreservation of human donor material is crucial for various research applications.
- Standard freezing methods can lead to significant cell loss and reduced viability.
- Developing reproducible and effective cryopreservation techniques is essential for maintaining cell integrity.
Purpose of the Study:
- To develop a simple, reproducible method for freezing cultured human donor material.
- To determine optimal cooling rates for cryopreservation using dimethyl sulfoxide (DMSO).
- To evaluate endothelial cell viability and survival after cryopreservation and thawing.
Main Methods:
- Empirical development of a freezing protocol using a microcomputer-controlled apparatus.
- Optimization of cooling rates: 1.0°C/min to -40°C, then 5.0°C/min to -80°C.
- Application of an improved method for assessing endothelial cell viability post-thaw.
Main Results:
- A reproducible freezing method for cultured human donor material was established.
- Optimal cooling rates were identified for maximizing cell survival.
- Cell loss rates were determined to be 36.9 ± 19.8% of postmortem endothelial cell counts.
- Definite endothelial cell survival was observed after a postculture period.
Conclusions:
- The developed method provides a simple and reproducible approach to cryopreserve human donor material.
- The identified cooling rates enhance cell survival rates, minimizing cryoinjury.
- This technique facilitates the preservation of viable endothelial cells for future research and clinical applications.