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Long-term whole blood DNA preservation by cost-efficient cryosilicification
Liang Zhou1, Qi Lei1, Jimin Guo2
1MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, P. R. China.
Nature Communications
|October 21, 2022
Summary
We developed an inexpensive in situ cryosilicification method for long-term deoxyribonucleic acid (DNA) preservation. This technique offers robust, room-temperature storage of genomic information for over a thousand years, potentially enabling artificial fossilization.
Area of Science:
- Biotechnology
- Molecular Biology
- Materials Science
Background:
- Deoxyribonucleic acid (DNA) is fundamental to life, necessitating secure and cost-effective long-term storage solutions.
- Current DNA preservation methods face limitations in terms of cost, stability, and long-term viability.
- Societal benefits of accessible, long-term genomic information storage are significant.
Purpose of the Study:
- To present a novel, straightforward, and inexpensive method for the long-term preservation of DNA from whole blood cells.
- To demonstrate the robustness and stability of cryosilicified DNA samples against various environmental stressors.
- To explore the potential for large-scale, room-temperature genomic data storage and artificial fossilization.
Main Methods:
- In situ cryosilicification of whole blood cells to preserve DNA.
- Assessment of cryosilicified sample robustness against radical oxygen species and ultraviolet radiation.
- Evaluation of long-term stability under humid conditions and elevated temperatures.
Main Results:
- The cryosilicification method provides a reliable and inexpensive approach for DNA preservation.
- Cryosilicified samples exhibit significant robustness against common DNA degradation factors.
- The method allows for potential long-term (over 1000 years) room-temperature storage of genomic information at a low cost ($0.5/person).
- Demonstration of 3D-printed DNA banking artifacts for potential artificial fossilization.
Conclusions:
- In situ cryosilicification is a promising technique for cost-effective, long-term DNA preservation.
- This method ensures DNA integrity against environmental stressors, facilitating stable genomic data storage.
- The approach has the potential to revolutionize genomic information archiving and enable novel forms of data preservation, such as artificial fossilization.
