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READERS - February 2010
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From
nanotechnology to synthetic biology Editorial
Synthetic
biology is biological engineering, an emerging, fast-developing
“technoscience”
with economic clout in the near future. With regard to industrial
applications,
synthetic biology will probably grow in a way similar to the computer
and
information industries but with a lead time of thirty years. Its
current phase
of development recalls what happened during the early days of the computer industry. Like nanotechnology,
synthetic biology might fully alter our approach to key technologies,
thus
opening the way toward a new generation of products, industries and
markets
thanks to our newly acquired ability to manipulate matter at the
molecular
level. Its applications will be mainly in health, agribusiness, the
environment, energy and materials. Even though it has already rung up
successes, it is too soon to predict the fields where it will find its
most
important applications.
The
emergence of
synthetic biology, an advanced technology, is being accelerated owing
to the
combined effects of: the growing availability of digital data
libraries, the
simulation software used to process data in biosciences, the sharp drop
in the
cost of sequencing and building DNA, and the increasing length of the
strands
built. Synthetic biology draws on the results of systems biology, which
seeks
to understand existing biological systems quantitatively. It is based
on an
open-source approach to cataloging the “building blocks” to be listed
in a
digital library of biological standards. The design and use of this
data base
raises questions of governance as well as social, economic and
regulatory
issues with implications for safety and security. Private parties
should be
able to count on public funding eventually reaching the critical amount
needed
to produce findings of an international quality and develop responsible
innovations
in phase with major social goals (employment, health, safety, security,
global
warming, the eradication of poverty), while bearing in mind the long
payback
time of investments in this sector.
At the end
of the 1950s,
Richard Feynman delivered a visionary lecture. No attention was paid to
it for
several decades, but it is now famous. It laid the grounds for
nanotechnology
by imagining, well before the invention of the atomic force microscope,
the
manipulation of objects at the level of the atom. The perspective thus
opened
now enables us to re-conceive electronics as an assemblage of
nanometric
components. Without claiming to cover this vast field, this short
article seeks
to cite a few examples so that readers form their own ideas about how
nanotechnology is opening a new approach toward information-processing.
It
is not very easy to define a nanomaterial. It might even be futile to
try to
define what nanotechniques are and will be. So, how can a group like
Solvay
— created to produce sodium carbonate but, at present, involved in
high-performance polymers and pharmaceutics — react to this
nascent
reality? How should such a firm organize itself to extract the
quintessence
from nanotechnology and adopt specific applications in its activities?
Nanotechnology
can be
used to manage and assemble substances in unprecedented ways in the
history of
products for human health. Underlying this revolution are the
possibilities for
using new therapeutic processes and separating a drug’s various
functions
(distribution, effects, etc.). This is not possible with classical
drugs.
Nanomedicine has made it possible to develop new approaches to treating
cancer,
by using nanoparticles with physical effects at the scale of the
malignant
cell. Hard metallic oxide nanoparticles have been designed so that they
can
play a therapeutic role when activated by x-rays. These
“x-ray-activable”
nanoparticles might set off a revolution in the practice of
radiotherapy for
destroying or controlling malignant tumors. |
III. The key role of metrology
and standardization Richard
Feynman’s lecture to the California Institute of Technology on
29 December
1959 is now recognized as signaling the start of a new “nano” era. This
Nobel
Prize-winner (Physics in 1965) stated, “There is plenty of room at the
bottom”,
thus predicting that it would, someday, be possible to “write the
entire
24 volumes of the Encyclopedia Britannica on the head of a
pin”.
This statement is as symbolic for the nanoworld as Neil Armstrong’s
declaration
for our macroscopic world, when he took his first step on the moon on
21 July 1969: “A small step for man, a big step for humanity.”
Although
the “nanoworld” does have a date of birth, it was not till 1974 that a
Japanese
scholar, Norio Taniguchi, coined the word “nanotechnology”. Eric
Drexler of MIT
popularized the word in his 1986 essay, “Engines of creation”. Metrology, a tool for managing total
quality in nanotechnological industries The science
of
measurement cannot be sidestepped in industrial production processes.
The tools
of metrology (instrumentation, analytical methods, testing, calibrating
and
standardizing units for measurement) have a long history in traditional
and
contemporary production processes. Many of them even figure in
catalogs. This
is not the case for nanotechnology: there are few (or even no)
instruments for
measuring at the requisite nanometric scale. The properties of a given
material
at the nanometric level often differ from its properties at a
macroscopic or
submicronic scale. It is necessary to characterize these properties,
above all,
for social reasons having to do with the safety of wage-earners and
consumers.
Do you
remember how big
telephone and laptop computer batteries were in the mid-1990s? And how
long
they stayed charged? That was before the lithium-ion batteries with
“nanos
inside”. New and future batteries in electric automobiles, solar panels
and
many devices for stocking and transporting energy are being designed
using such
materials. Nanomaterials are setting off a revolution in radiotherapy
for
cancer, since they can be lodged exclusively in cancerous cells, where
they
considerably augment both the effects of radiation and the efficacy of
the
treatment while making it possible to lessen the dose of radiation and
thus
reduce its side-effects on nearby, healthy cells. Other applications
are being
made in packaging for groceries, paint for boats, cosmetics, products
for
cleaning up polluted soil, etc. The list is growing longer and longer…
When
demands for transparency exclusively focus on the labeling of products,
they
risk becoming counterproductive. Labels neither enable consumers to
make
informed choices nor inspire trust. Moreover, they stifle the ethical
aspect of
transparency, namely: the requirement for transparency and
accountability.
Transparency must reach beyond factual information about ingredients
and touch
on values. To talk about “responsible innovation”, it is indispensable
to
recognize that material goods are not neutral: they bear social and
moral
values. These values must be identified and exposed to debate. Only
then can
labels engage the responsibility of all parties to an innovation.
Recent
developments in
nanotechnology have given rise to great expectations, and still do so.
Nanotechnology is considered to be one of the key technologies for the
industrialized world’s future development. These expectations of
economic
benefits for society have spurred enormous investments in research and
development in Europe, the United States and other parts of the world.
Surprisingly, little is known about the impact of nanotechnology on the
environment and human health. Neither the European Group on Ethics nor
the
author personally wants to join those who are trying to stop the
development of
nanotechnology because of these gaps in our knowledge. It is, however,
in the
long-term interest of all parties (including industry) to try to fill
these
gaps. In other words, important research and informational priorities
need to
be urgently addressed. |
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