Cover Image: February 2010 Scientific American Magazine See Inside

Life from a Test Tube? The Real Promise of Synthetic Biology

Scientists are closing in on the ability to make life from scratch, with potential consequences both good and bad















Share on Tumblr



Image: Matt Collins

  • What a Plant Knows

    How does a Venus flytrap know when to snap shut? Can it actually feel an insect’s tiny, spindly legs? And how do cherry blossoms know when to bloom? Can they...

    Read More »

I have seen the future, and it is now.

Those words came to mind again as I recently listened to Craig Venter, one of those leading the new areas of synthetic genomics and synthetic biology. Every time I hear a talk on this subject, it seems a new threshold in the artificial manipulation and, ultimately, creation of life has been passed.

Consider just some of the progress associated with the J. Craig Venter Institute. In 2003 its researchers created a synthetic version of the bacteriophage phiX174. In 2007 they successfully transformed one species of bacteria to another by genome transplantation. Most recently, they developed methods for the complete synthetic assembly of the genome of the bacterium Mycoplasma genitalium.

The techniques now developed make the feat of sequencing the human genome in 2001 seem prehistoric. Not only have the cost and speed of sequencing evolved faster than those of computer chips, but the ability to use both chemistry and biology to synthesize new complex organisms has undergone a revolution in the past five years. Instructions embedded in synthetic gene sequences can now be implanted in foreign cells and thereby cause those cells to express proteins; those proteins, in turn, build new functioning copies of the life-forms whose instruction manual is in the embedded sequences. Venter calls this cycle “software that creates its own hardware.” I expect to hear news soon of the successful creation of the first completely artificial life-form, built from scratch and not alive until the scientists assembled it.

Semiconductor nanotechnology has been heralded for more than a decade, but I believe it will pale beside the ability of biotechnology to transform life and society. Imagine the impact of piggybacking on nature’s majesty and designing living systems that can perform tasks not found in nature, from microbes that make gasoline or eat carbon dioxide to create nonbiodegradable plastic building materials to organisms designed to surgically and strategically operate on cancer cells. I expect that within 50 years the world’s economy will be driven not by computer-generated information but by biologically generated software.

Of course, as Spiderman would say, with great power comes great responsibility. Hackers now create software viruses that periodically disable huge computer networks. With the ability to make DNA sequences to order has risen the specter of garage-based DNA hackers who might terrorize the world—intentionally or accidentally—by re-creating the Ebola virus or the 1918 flu. Each of those disease organisms has a genetic code far smaller than that of the recently synthesized M. genitalium. One could also imagine producing, again perhaps unwittingly, viruses that are immune to existing vaccines.

Some may fear the existence of new life-forms that might attack all life on earth or at least human life. This fear is probably misplaced. Life has survived for more than three billion years because it is robust, and almost no mutations can easily outwit the defense mechanisms built up through eons of exposure to potential path­o­gens. Venter’s argument that new naturally emerging diseases are a far greater threat than new artificial diseases seems relatively compelling.

Nevertheless, there have been, until fairly recently, few checks on the unfettered reproduction of genetic information. As the ability to synthesize more complex biological systems has increased, however, the research community has put in place a voluntary system of restrictions, for example, on the fulfillment of commercial orders for genetic sequences that correspond to portions of potentially lethal organisms. At present, the technological know-how associated with developing synthetic biology laboratories with malice aforethought is probably beyond the means of even sophisticated terrorist networks. Moreover, it is important not to let misplaced fears of Armageddon unduly restrict scientific work with great potential to benefit humankind.



17 Comments

Add Comment
View
  1. 1. wiberkleid 01:47 PM 1/22/10

    This is a very interesting article, but I disagree on one point.

    The authors view is that we probably can't produce a virus that will destroy our species, since nature has not produced it through eons of time.

    I disagree with him completely.

    Species have come and gone and ours is the most vulnerable because we can best nature in the short run (just look at the wheel).
    We can intelligently zoom into the worst possible virus and auto-destruct.
    Evolution would take thousands, or millions, of years to produce such a virus, giving our species time to adapt.

    In fact, that may be the reason, why we have not found intelligent beings in the universe. As soon as they evolve to auto-destruct, they do so.
    Murphy's Law 101.

    Reply | Report Abuse | Link to this
  2. 2. eco-steve 07:25 PM 1/25/10

    Any volunteers to make a ribosome?

    Reply | Report Abuse | Link to this
  3. 3. Leon Lu 03:21 AM 1/27/10

    Awesome

    Reply | Report Abuse | Link to this
  4. 4. benext 01:39 AM 2/7/10

    if we human belong to the systerm ,how can we destroy the systerm?we just make changes in durabale ways.
    I agree to the author .

    Reply | Report Abuse | Link to this
  5. 5. lopkiol 12:33 PM 2/10/10

    "I expect that within 50 years the worlds economy will be driven not by computer-generated information but by biologically generated software."

    What's the difference really? By that time computer-generated information and biologically generated software would be the same thing. It will be really hard to make a distinction between the two. Systems (today we call them "animals") will be partly derived by what nature provided and partly by what we will build from scratch. Also the word "identity" will become obsolete. Thoughts will be contained in matter and travel at the speed of light in many locations around the universe.

    Reply | Report Abuse | Link to this
  6. 6. tharriss 09:11 AM 2/16/10

    benext... Sorry that makes no sense to me.

    Humanity is certainly capable of wiping itself out. Sure the larger "system" of the universe would continue on, but that doesn't help us much if we are all toast.

    I agree that we shouldn't generate unreasonable fear over the possibilities, but a strong dose of caution as we proceed with powerful new technologies seems reasonable.

    Reply | Report Abuse | Link to this
  7. 7. Crucialitis 01:58 PM 2/16/10

    Just like computer viruses, we'll develop a synthetic anti-virus system. Eventually we'll have nanomachines that will be just as fast at updating and destroying synthetic pathogens as the creators can make them.

    We've had the ability to wipe out the world for 65 years and we're all still here.

    Reply | Report Abuse | Link to this
  8. 8. Philip123 06:56 PM 2/16/10

    Of course when genetic engineers in Australia tried to create a mouse contraceptive they entirely by accident created an incredibly lethal version of mousepox. http://healthjournalclub.blogspot.com/2009/11/armageddon-bug.html
    So really what could possibly go wrong.

    Reply | Report Abuse | Link to this
  9. 9. jonitiranes 08:18 PM 2/16/10

    Biochemists have used in vivo protein expression systems for so many years now. I don't see how this comes to a astonishing new fact to the author. The method is truly considered simple and quite basic. And I find it quite hard to believe that we are synthesizing new species intentionally. The field of biochemistry and molecular biology is still in its beginning stages, where they are trying to identify, isolate, and understand essential proteins and their roles in a cell system. therefore we don't have enough knowledge as to intentionally synthesize a functional organism unless they are just slight genomic mutations from an already known genome. and even then, this new organism should not be referred to as a new species but merely a mutant of an already existing one.

    Reply | Report Abuse | Link to this
  10. 10. robert schmidt 09:30 PM 2/16/10

    I understand downplaying the concerns. The population is irrational, scientifically illiterate and prone to be reactionary and easily panicked. At the same time I don't agree that nature is more dangerous. Natural diseases evolve to propagate themselves, not to destroy life. The one is only an unintentional side effect of the other. In fact natural diseases that kill too quickly, like Ebola, burn themselves out by killing off all their vectors. On the other hand, society is littered with those whose intent is to wipe-out their enemies. The diseases they will create will not be controlled by population dynamics or evolutionary constraints. They will be able to create diseases that change antigens frequently thus never giving our immune system time to adapt. They will sculpt them so that they maintain their hosts in a communicable state for long periods of time, before killing or debilitating them. Instead of one disease, they will be able to make hundreds, or thousands thereby overwhelming not only our immune system but the natural immune variability in the population. And they will be able to disperse them at will, thereby eliminating our ability to contain them. Nature is certainly more inventive then us, but far less malevolent.

    @Crucialitis, "Eventually we'll have nanomachines that will be just as fast at updating and destroying synthetic pathogens as the creators can make them." If technology will save us, then why do we still have computer viruses? And keep in mind that a computer presents a much narrower target than a person.

    Perhaps we should put the safeguards in first, before an unfortunate event blindsides us. For once, let’s not wait for an accident to teach us how dangerous the technology is.

    Reply | Report Abuse | Link to this
  11. 11. Crucialitis in reply to robert schmidt 11:02 AM 2/17/10

    @robert schmidt
    We still get the flu every year. That doesn't mean our immune system is a failure.

    Thinking about ways to proceed safely is one thing, mandating safeguards may hamper innovation.

    Reply | Report Abuse | Link to this
  12. 12. Crucialitis in reply to robert schmidt 11:07 AM 2/17/10

    robert schmidt: "If technology will save us, then why do we still have computer viruses? And keep in mind that a computer presents a much narrower target than a person."

    Besides getting the flu and the common cold despite having immune systems. Keep in mind that people who don't take proper safeguards like hygiene and safe sex catch devastating viruses from nature. It's a matter of vigilance and common sense. Keep your nano machines updated and you won't get the bioplague.

    Reply | Report Abuse | Link to this
  13. 13. tjj300 in reply to Crucialitis 04:51 PM 2/17/10

    You will be assimilated. Resistance is futile.

    Reply | Report Abuse | Link to this
  14. 14. robert schmidt in reply to Crucialitis 09:06 PM 2/17/10

    @Crucialitis, but that is not what you said. You claimed in effect we should not be concerned because science will do what it has yet to do, which is keep pace with those who misuse and abuse technology whether by accident or intentionally. Have you not heard of these events; Chernobyl, 3 Mile Island, 9/11, 2001 Anthrax Attacks, Exxon Valdese, Bhopal? Is it wise to believe that there is no possibility of catastrophe, when time and time again every one of these technologies and the related systems meant to keep us safe have failed. To be honest, I’d rather hamper innovation than cause the deaths of thousands and or perhaps millions of people because of recklessness. You don’t seem to grasp the threat these technologies present. You place a great deal of faith in systems that have already failed. And your excuse for doing so is consumerism.

    Reply | Report Abuse | Link to this
  15. 15. Crucialitis in reply to robert schmidt 11:14 AM 2/18/10

    @robert schmidt
    And you seem to discount the safeguards that have arisen with each innovation.

    Reply | Report Abuse | Link to this
  16. 16. Crucialitis in reply to robert schmidt 01:50 PM 2/18/10

    Conversely, millions of lives may be lost by not bringing innovations to fruition.

    People will always misuse technology, but you don't let a few bad apples spoil the bunch.

    The methods of producing synthetic organisms could incorporate notification if someone were to try synthesizing something suspicious, but ultimately there's no way as of yet to guarantee 100% safe use or 0% human error.

    Yes, people get computer viruses. But that doesn't mean anti-virus software doesn't work. In many cases the system is compromised by human error. Downloading something they shouldn't have, or not keeping anti-virus software up to date. The ongoing balance between the two keeps improving our standard. Be honest, the world isn't going to stop making viruses. There's no sense hamstringing entire branches of science and industry over hypothetical boogeymen.

    Life is always an adaptive process. Our technologies are no exception, in fact they are the method.

    I place my faith not in "systems that have already failed" which is certainly an opinion you're entitled to; Rather, I have faith in the resilience of humans to overcome their obstacles.

    I reiterate, we've had the ability to destroy the world for 65 years and we're all still here. Using the same technology to provide 20% of the energy you're using to display these words on your screen.

    Reply | Report Abuse | Link to this
  17. 17. tootifrooti 09:19 AM 1/18/11

    robin cook's books may turn out true after all!

    Reply | Report Abuse | Link to this
Leave this field empty

Add a Comment

You must sign in or register as a ScientificAmerican.com member to submit a comment.
Click one of the buttons below to register using an existing Social Account.

More from Scientific American

See what we're tweeting about

Scientific American Editors

More »

Free Newsletters


Get the best from Scientific American in your inbox

Solve Innovation Challenges

Powered By: Innocentive

  SA Digital

Latest from SA Blog Network

  SA Digital

Science Jobs of the Week

Email this Article

Life from a Test Tube? The Real Promise of Synthetic Biology: Scientific American Magazine

X
Scientific American Magazine

Subscribe Today

Save 66% off the cover price and get a free gift!

Learn More >>

X

Please Log In

Forgot: Password

X

Account Linking

Welcome, . Do you have an existing ScientificAmerican.com account?

Yes, please link my existing account with for quick, secure access.



Forgot Password?

No, I would like to create a new account with my profile information.

Create Account
X

Report Abuse

Are you sure?

X

Institutional Access

It has been identified that the institution you are trying to access this article from has institutional site license access to Scientific American on nature.com. To access this article in its entirety through site license access, click below.

Site license access
X

Error

X

Share this Article

X