Copy-pasting life from Mars to Earthhttps://indianexpress.com/article/news-archive/print/copypasting-life-from-mars-to-earth/

Copy-pasting life from Mars to Earth

With DNA sequencing and synthesis becoming faster and cheaper,maverick scientist J Craig Venter plans to use a ‘biological fax machine’ to recreate copies of organisms,including from the Red Planet.

J Craig Venter,the maverick scientist,is looking for a new world to conquer — Mars. He wants to detect life on Mars and bring it to Earth using a device called digital biological converter,or biological teleporter.

Although the idea conjures up Star Trek,the analogy is not exact. The transporter on that programme moves Captain Kirk from one location to another. Venter’s machine would merely create a copy of an organism from a distant location — more like a biological fax machine.

Still,Venter,known for his early sequencing of the human genome and for his bold proclamations,predicts the biological converter will be his next innovation and will be useful on Earth.

The idea behind it,not original to him,is that the genetic code that governs life can be stored in a computer and transmitted just like any other information.

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Venter’s system would determine the sequence of the DNA units in an organism’s genome and transmit that information electronically. At the distant location,the genome would be synthesised — or chemically recreated — inserted into what amounts to a blank cell,and “booted up”,as Venter puts it. In other words,the inserted DNA would take command of the cell and recreate a copy of the original organism.

To test out some ideas,he and a small team of scientists from his company and from NASA were recently in Mojave Desert,California,the closest stand-in they could find for the dry surface of Mars.

The biological fax is not as far-fetched as it seems. Both DNA sequencing and DNA synthesis are rapidly becoming faster and cheaper. For now,however,synthesising an organism’s entire genome is still generally too difficult. So the system will first be used to remotely clone individual genes,or perhaps viruses. More complex creatures,earthly or Martian,will probably never be possible.

Venter’s company Synthetic Genomics and his namesake non-profit research institute have already used the technology to help develop an experimental vaccine for the H7N9 bird flu with the drug maker Novartis.

Typically,when a new strain of flu virus appears,scientists must transport it to labs,which can spend weeks perfecting a strain that can be grown in eggs or animal cells to make vaccine.

But when H7N9 appeared in China in February,its genome was sequenced by scientists there and made publicly available. Within days,Venter’s team had synthesised the two main genes and used them to make a vaccine strain.

Venter said Synthetic Genomics would start selling a machine next year that would automate the synthesis of genes by stringing small pieces of DNA together to make larger ones.

Eventually,he said,“we’ll have a small box like a printer attached to your computer”. A person with a bacterial infection might be sent the code to recreate a virus designed to kill that specific bacterium.

“We can send an antibiotic as an email,” said Venter,who has outlined his ideas in a new book,Life at the Speed of Light: From the Double Helix to the Dawn of Digital Life. Proteins might also be made,so that diabetics,for instance,could “download insulin from the Internet”.

Venter,67,has many scientific achievements — though critics deride some of them as stunts — but has had less success converting his ideas into successful businesses.

In 2010,Venter made headlines by creating what some considered the first man-made life. His team synthesised the genome of one species of bacterium and transplanted it into a slightly different species. Critics said Venter had not really created life,just copied it. Venter said in the interview that while he didn’t create life from scratch,he had created a new type of life.

George Church,a professor of genetics at Harvard Medical School,said there was nothing unique about Venter’s work so far because others had already synthesised viruses based on DNA sequence information available on the Internet. “Most people in the past didn’t call it teleportation,” he said,“but if you want to,fine.”

Space exploration is one area where the teleporter might be especially useful. It would be extremely costly and time consuming to send a medicine physically to a colonist on another planet who becomes sick. And it would be difficult to send a sample from Mars back to Earth.

That is why Venter’s team was camped this weekend about 15 miles southeast of Baker,California. The mission was to find microbial life in the desert,determine its sequence and transmit it to Synthetic Genomics’s headquarters in San Diego.

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Of course,all this assumes there is life on Mars to begin with and that it is based on DNA.

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