Navigation Links
Writing the book in DNA
Date:8/17/2012

Although George Church's next book doesn't hit the shelves until Oct. 2, it has already passed an enviable benchmark: 70 billion copiesroughly triple the sum of the top 100 books of all time.

And they fit on your thumbnail.

That's because Church, the Robert Winthrop Professor of Genetics at Harvard Medical School and a founding core faculty member of the Wyss Institute for Biomedical Engineering at Harvard University, and his team encoded the book, Regenesis: How Synthetic Biology Will Reinvent Nature and Ourselves, in DNA, which they then read and copied.

Biology's databank, DNA has long tantalized researchers with its potential as a storage medium: fantastically dense, stable, energy efficient and proven to work over a timespan of some 3.5 billion years. While not the first project to demonstrate the potential of DNA storage, Church's team married next-generation sequencing technology with a novel strategy to encode 1,000 times the largest amount of data previously stored in DNA.

The team reports its results in the Aug. 17 issue of the journal Science.

The researchers used binary code to preserve the text, images and formatting of the book. While the scale is roughly what a 5 -inch floppy disk once held, the density of the bits is nearly off the charts: 5.5 petabits, or 1 million gigabits, per cubic millimeter. "The information density and scale compare favorably with other experimental storage methods from biology and physics," said Sri Kosuri, a senior scientist at the Wyss Institute and senior author on the paper. The team also included Yuan Gao, a former Wyss postdoc who is now an associate professor of biomedical engineering at Johns Hopkins University.

And where some experimental medialike quantum holographyrequire incredibly cold temperatures and tremendous energy, DNA is stable at room temperature. "You can drop it wherever you want, in the desert or your backyard, and it will be there 400,000 years later," Church said.

Reading and writing in DNA is slower than in other media, however, which makes it better suited for archival storage of massive amounts of data, rather than for quick retrieval or data processing. "Imagine that you had really cheap video recorders everywhere," Church said. "Just paint walls with video recorders. And for the most part they just record and no one ever goes to them. But if something really good or really bad happens you want to go and scrape the wall and see what you got. So something that's molecular is so much more energy efficient and compact that you can consider applications that were impossible before."

About four grams of DNA theoretically could store the digital data humankind creates in one year.

Although other projects have encoded data in the DNA of living bacteria, the Church team used commercial DNA microchips to create standalone DNA. "We purposefully avoided living cells," Church said. "In an organism, your message is a tiny fraction of the whole cell, so there's a lot of wasted space. But more importantly, almost as soon as a DNA goes into a cell, if that DNA doesn't earn its keep, if it isn't evolutionarily advantageous, the cell will start mutating it, and eventually the cell will completely delete it."

In another departure, the team rejected so-called "shotgun sequencing," which reassembles long DNA sequences by identifying overlaps in short strands. Instead, they took their cue from information technology, and encoded the book in 96-bit data blocks, each with a 19-bit address to guide reassembly. Including jpeg images and HTML formatting, the code for the book required 54,898 of these data blocks, each a unique DNA sequence. "We wanted to illustrate how the modern world is really full of zeroes and ones, not As through Zs alone," Kosuri said.

The team discussed including a DNA copy with each print edition of Regenesis. But in the book, Church and his co-author, the science writer Ed Regis, argue for careful supervision of synthetic biology and the policing of its products and tools. Practicing what they preach, the authors decided against a DNA insertat least until there has been far more discussion of the safety, security and ethics of using DNA this way. "Maybe the next book," Church said.


'/>"/>

Contact: David Cameron
david_cameron@hms.harvard.edu
617-432-0441
Harvard Medical School
Source:Eurekalert

Related biology news :

1. MARC travel awards announced for Leadership Development and Grant Writing Seminar
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/13/2017)... 13, 2017 UBM,s Advanced Design and Manufacturing ... feature emerging and evolving technology through its 3D Printing ... run alongside the expo portion of the event and ... demonstrations focused on trending topics within 3D printing and ... manufacturing event will take place June 13-15, 2017 at the ...
(Date:4/11/2017)... , April 11, 2017 Crossmatch®, a ... authentication solutions, today announced that it has been ... Research Projects Activity (IARPA) to develop next-generation Presentation ... "Innovation has been a driving force ... program will allow us to innovate and develop ...
(Date:4/11/2017)... No two people are believed to ... York University Tandon School of Engineering and Michigan ... partial similarities between prints are common enough that ... and other electronic devices can be more vulnerable ... in the fact that fingerprint-based authentication systems feature ...
Breaking Biology News(10 mins):
(Date:9/14/2017)... ... September 14, 2017 , ... ... of its CliniControl™ (CC) product portfolio, clinically-relevant starting and ancillary materials that ... human Mesenchymal Stem/Stromal Cell (hMSC)-based therapies. The CliniControl product portfolio will radically ...
(Date:9/14/2017)... , ... September 14, 2017 , ... One of the ... Saturday, Sept. 16. , For six hours that day, the GenCure Marrow Donor Program ... more than 30 H-E-B grocery stores in San Antonio. , The registration tables will ...
(Date:9/13/2017)... ... September 13, 2017 , ... AMRI, a global contract ... patient outcomes and quality of life for more than 25 years, today announced ... expert to the International Standards Organization/Technical Committee 194: Biological and Clinical Evaluation ...
(Date:9/12/2017)... ... September 12, 2017 , ... Avomeen.com, the analytical ... and development companies will be exhibiting at the 16th annual Contract Pharma Conference ... Pharma is an educational conference for pharma and bio-pharma professionals that has ...
Breaking Biology Technology: