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Vitrification as a prospect for cryopreservation of tissue-engineered constructs
L L Kuleshova1, S S Gouk, D W Hutmacher
1Low Temperature Preservation Unit, National University Medical Institutes, Yong Loo Lin School of Medicine, National University of Singapore, 03-01C Block MD11, 10 Medical Drive, Singapore 117597, Singapore. nmikl@nus.edu.sg
Biomaterials
|December 21, 2006
Summary
Vitrification, an ice-free cryopreservation method, is crucial for preserving tissue-engineered constructs (TECs). Overcoming ice formation challenges is key to successful cryopreservation for future clinical applications of TECs.
Area of Science:
- Biomedical Engineering
- Regenerative Medicine
- Cryobiology
Background:
- Tissue-engineered constructs (TECs) combine scaffolds or matrices with living cells for tissue repair and regeneration.
- Effective cryopreservation of TECs is essential for their widespread clinical distribution and application.
- Current cryopreservation methods include conventional freezing and vitrification (ice-free).
Purpose of the Study:
- To define the requirements for vitrifying TECs.
- To evaluate cryoprotectant properties, materials, and morphology for successful TEC vitrification.
- To highlight the challenges associated with ice formation in TEC cryopreservation.
Main Methods:
- Review of cryopreservation techniques, focusing on vitrification.
- Analysis of factors influencing TEC cryopreservation: cryoprotectants, materials, and morphology.
- Comparison of conventional freezing versus vitrification for TECs.
Main Results:
- Ice formation, through direct and indirect effects, presents significant challenges in TEC cryopreservation.
- Vitrification offers a promising approach to overcome ice-related damage.
- Specific needs and desires for vitrifying TECs were identified.
Conclusions:
- Vitrification is the most promising cryopreservation modality for TECs due to its ice-free nature.
- Addressing challenges related to cryoprotectants, materials, and morphology is vital for advancing TEC cryopreservation.
- Successful cryopreservation of TECs is indispensable for the future of tissue engineering and clinical translation.
