I know many people are worried about the Advisory Committee on Immunization Practices (ACIP) meeting happening later this week – I am too – but from a longer term perspective there’s another meeting happening this week that we should also be paying attention to: the Engineering and Safeguarding Synthetic Life conference, in Manchester (U.K.). It is aimed at bringing together “scientists, engineers, ethicists, policymakers, and other stakeholders to explore the challenges and opportunities of building and regulating synthetic life.”
Mirror image synthetic life isn't going to be quite that easy. Credit: Ting Zhu Lab
The
conference has four sessions:
- Session
1 – Synthetic Cells:
Advances in the creation of minimal and fully synthetic cells, highlighting new
technologies and design principles.
- Session
2 – Synthetic Genomes:
Cutting-edge progress in genome synthesis and engineering, including
applications and long-term visions.
- Session
3 – Safeguarding Synthetic Life:
Addressing safety, ethics, and science diplomacy, with a focus on responsible
innovation and governance, including for mirror cells.
- Session
4 – Recombining Emerging Technologies:
Examining how synthetic biology converges with fields such as AI, robotics, and
materials science to enable new capabilities.
These aren’t sessions speculating about long range futures; these are sessions led by leading scientists talking about current work, in hopes of creating informed discussion about what more of us should be thinking about. The future is almost here.
It
has a companion program -- Japan-UK Engineering Biology Meeting -- that
follows, and in December in the U.S. the National Academy of Science will host a
workshop Mirror
Image Biology: Pushing the Envelope in Designing Biological Systems, “focusing
on the state of the science, trends in research and development, risks and
benefits of this research, and considerations relating for future governance of
relevant enabling technologies.”
Serious
people are taking this seriously.
Devoted
readers may recall that three months ago I wrote about the Synthetic Human
Genome Project, the goal of which is “to provide proof of concept for large
genome synthesis by creating a fully synthetic human chromosome.” Or they may
remember when I wrote
last December about a technical report warning about the potential benefits
and risks of so-called “mirror life,” whose DNA has the opposite chirality of
all existing DNA.
Then,
just two months ago, researchers from MRC Laboratory of Molecular Biology announced
they had modified an E. Coli to have only 57 codons, versus the 64 that
essentially all DNA organisms have. They
call it Syn57, and Wesley Robertson, one of the authors, told
Carl Zimmer of The New York Times: “Life still works…This reveals
that there is nothing fundamental about the universal genetic code.”
We’re
tinkering with the basics of life itself. Gee, what could possibly go wrong?
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Credit: MRC Laboratory of Molecular Biology |
Not
everyone is as worried. “Given all of the other ways in which technology is
upending society right now, it’s a little surprising that this has gotten as
much attention as it has,” David Van Valen, a bioengineer at the California
Institute of Technology, told Mr. Peplow. “I think most of the concerns that
people are raising are overblown.”
One
of the leaders in the field, Ting Zhu at Westlake University in Hangzhou, China,
is not attending this week’s conference but did author a companion piece to Mr.
Peplow’s, Mirror
of the unknown: should research on mirror-image molecular biology be stopped?
Dr. Zhu takes the high road: “But in the face of vast unknowns, the noble
path of pre-emptively protecting humanity from potential risks in the distant
future can be slippery. And we should tread cautiously.”
Still, he points out:
Research in mirror-image molecular biology is still in its infancy. But scientists working in this field have been humbled by the tremendous challenges of exploring this unknown world 5–14. The creation of mirror-image organisms, if it ever became feasible, would face monumental conceptual and technical barriers.
He
adds that it took his team almost four years to construct a mirror image
protein fragment of about 470 amino acids – the longest yet but still just a
fragment. They’ve been working on a mirror image ribosome for almost ten years,
“and are still years away from achieving it.”
According:
In short, it is crucial to distinguish mirror-image molecular biology from the creation of mirror-image organisms. A self-replicating cell has molecular diversity, metabolic complexity and structural intricacy that are orders of magnitude greater than what’s found in any currently synthesizable biomolecular system. And the creation of a mirror-image organism lies well beyond the reach of present-day science.
Dr. Zhu
does think there are “endless possibilities” with mirror image molecules, such
as more effective drugs, enzymes that could degrade plastics, even more robust
data storage capabilities than natural DNA. It is important, he argues, that we
don’t put a moratorium on the field, but he does agree with the purpose of this
week’s conference, “establishing ethical boundaries would be to comprehensively
assess near-term challenges and long-term risks across multiple disciplines.”
If one is
cynical about China following such ethical guidelines, Dr. Adamala is not, at
least when it comes to Dr. Zhu, telling Mr. Peplow: “He’s said he’s not going
to build a living mirror cell, and that’s good enough for me,”
Well,
maybe.
I’d be
remiss if I failed to note that DARPA has
just announced a Smart-Red Blood Cells (Smart-RBC) initiative, aiming “to
engineer red blood cells to contain novel biological features that can safely
and reliably modify human physiology.” It wants to identify “the art of-the-possible
to create SRBCs to enhance human performance in austere environments and
maximize survival via hemostasis products,” but also “unlock future
capabilities including, but not limited to, improving thermal regulation in
extreme environments, creating universal blood, accelerating acclimation to
high altitudes, generating more resilient blood products.”
And you
were worried about mirror image organisms.
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Credit: Darpa |