February 26, 2024

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PolyU explores the application of peptides in data storage

Image Credits: HK PolyU, Press Release.

With the huge amount of digital data generated and recorded during space missions, the data storage devices currently used for this purpose reveal great limitations in terms of their data storage capacity and the durability of the retained data.

To meet this challenge, a team of The Hong Kong Polytechnic University (PolyU) researchers has developed a novel technology for massive data management involving the use of peptides, which has been developed to optimise data storage for space exploration in China’s next-generation manned spacecraft in the new Long March-5B rocket.

Led by the Associate Professor, Department of Applied Biology and Chemical Technology and the Professor and Associate Head, Department of Electronic & Information Engineering, the team has used peptides for the storage of digital data and tandem mass spectrometry for its retrieval.

Compared with existing commercial data storage devices and other developing technologies such as DNA data storage, peptides offer a much higher storage density and longer storage duration – with the data still viable for sequencing even after millions of years when DNA would have already degraded.

As such, this new technology has very great potential for handling the enormous amount of data generated during space missions.

The lead considers the peptide synthesis industry to be already well-developed, allowing fast peptide synthesis at a reasonable cost; with the development of proteomics, the process of sequencing thousands of peptides in a mixture can now be completed within a short period.

Combining proteomics and data storage technology for the first time, this innovation has the potential to transform the data storage industry. Besides its application in data management for space missions, this technology has potentially wide applications and could benefit governmental agencies and corporations that generate and archive large volumes of big data.

Moreover, the further advancements in the peptide synthesis industry and sequencing technology would enable the peptide data storage to be applied at a more reasonable cost.

Launched on 5 May 2020, the manned spacecraft of the Long March-5B rocket, with the support of Space Biology Group, carried mixtures of peptides encoding a bilingual text file containing the PolyU motto ‘To learn and to apply, for the benefit of mankind’ and ‘PolyU 80th Anniversary’, as well as an audio file of the music ‘Silent Night’, prepared by the PolyU research team.

The purpose of this space ride-share experiment is to test the reliability and stability of the peptides for data storage and retrieval after exposure to the space environment.

Upon the safe return to Earth of the spacecraft along with the experimental materials, the PolyU team will decode and retrieve the data. It is expected that this technology will hold promise in supporting data management in space exploration in the coming future.

PolyU has a strong research track record in space technology, with its researchers having been involved in several national and international space exploration projects since the 1990s, and with this important space ride-share experiment, the University has now participated in the historic launch of China’s Long March-5B rocket along with the next-generation manned spacecraft to support the nation’s plan for space exploration to Mars.

PolyU looks forward to further collaboration with China Aerospace Science and Technology Corporation, Space Biology Group, China Resources Life Sciences Group and various other research partners to develop other forward-looking research projects for future space missions.

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