[Paleopsych] re: bacterial engineering and our future in space
HowlBloom at aol.com
HowlBloom at aol.com
Sat Nov 26 04:49:53 UTC 2005
Joel--The article you sent, the one below, is not only amazing. It
dovetails with a piece of poetry I wrote as a treatment for a short film in 2001.
As usual, the poem was inspired immensely by my interchanges with Eshel.
Take a look:
Could swarms of robo-microbes
Made by humans and biology
The techno teams
That come from dreams
The wet dreams of technology
Could cyborg microbes by the trillions
Launched as space communities
Explore the dark beyond our skies
Thrive on starlight, climb and dive
through wormholes and through nebulae?
Could they re-landscape Einstein’s space
And tame time with phrenology?
Could they ride herd
on mass stampedes
of x-rays and raw energy
corralling flares spat by black holes
at the cores of galaxies?
Could genes retooled
In swarms of cells
Become our new conquistadors?
Could they explore
Galactic shores
And synapse reports
To our brains?
>From global thinking
Could we go
To cosmos-hopping megaminds
One small step for E. coli
A giant step for human kind?
The article:
Retrieved November 25, 2005, from the World Wide Web
http://www.nytimes.com/2005/11/24/national/24film.html?adxnnl=1&emc=eta1&adxnnlx=1132979630-umqKos8Hc
Aa3U8FsuKGPrQ&pagewanted=print
-------------------------------------------------------------------------------- November 24, 2005 Live From the Lab, a
Culture Worth a Thousand Words By ANDREW POLLACK Your portrait in a petri
dish? Scientists have created living photographs made of bacteria, genetically
engineering the microbes so that a thin sheet of them growing in a dish can
capture and display an image. Bacteria are not about to replace conventional
photography because it takes at least two hours to produce a single image. But
the feat shows the potential of an emerging field called synthetic biology,
which involves designing living cellular machines much as electrical engineers
might design a circuit. "We're actually applying principles from engineering
into designing cells," said Christopher A. Voigt, assistant professor of
pharmaceutical chemistry at the University of California, San Francisco, and a
leader of the photography project, which is described in a paper being
published today in the journal Nature. One team of synthetic biologists is already
trying to engineer bacteria to produce a malaria drug that is now derived
from a tree and is in short supply. And J. Craig Venter, who led one team that
unraveled the human DNA sequence, has said he now wants to synthesize microbes
to produce hydrogen for energy. The technology could also be used to create
new pathogens or synthesize known ones. So far, however, most synthetic
biology accomplishments have been like the bacterial film - somewhat bizarre
demonstrations of things that can easily be done with electronics. Synthetic
biologists have, for instance, made the biological equivalent of an oscillator,
getting cells to blink on and off. To make the bacterial film, common E. coli
bacteria were given genes that cause a black pigment to be produced only when
the bacteria are in the dark. The camera, developed at the University of
Texas, Austin, is a temperature-controlled box in which bacteria grow, with a
hole in the top to let in light. An image on a black-and-white 35-millimeter
slide is projected through the hole onto a sheet of the microbes. Dark parts of
the slide block the light from hitting the bacteria, turning those parts of
the sheet black. The parts exposed to light remain the yellowish color of the
growth medium. The result is a permanent, somewhat eerie,
black-and-yellowish picture.
Scientists involved in the project said they envisioned being able to use
light to direct bacteria to manufacture substances on exquisitely small scales.
"It kind of gives us the ability to control single biological cells in a
population," said Jeffrey J. Tabor, a graduate student in molecular biology at
Texas. Scientists, of course, have been adding foreign genes to cells for
three decades, and the distinction between synthetic biology and more
conventional genetic engineering is not always clear. Proponents of synthetic biology
say genetic engineering so far has mainly involved transferring a single gene
from one organism into another. The human insulin gene, for instance, is put
into bacteria, which then produce the hormone. Each project, they say,
requires a lot of experimentation, in contrast to true engineering, like building a
microchip or a house, which uses standardized parts and has a fairly
predictable outcome. "We haven't been able to transform it into a discipline where
you can simply and predictably engineer biological systems," said Drew Endy,
an assistant professor of biological engineering at the Massachusetts
Institute of Technology. "It means the complexity of things we can make and can
afford to make are quite limited." Professor Endy and colleagues at M.I.T. have
created a catalog of biological components, which they call BioBricks, which
are sequences of DNA that can perform particular functions like turning on a
gene. Still, since cells differ from one another and are extremely complex, it
is open to question how predictable biological engineering can ever be.
M.I.T. has also begun holding a competition for college students to design
"genetically engineered machines." The bacterial camera was an entrant in 2004 and
was made in part using BioBricks. Mr. Tabor said the idea for bacterial
photography came from Zachary Booth Simpson, a digital artist who has been
learning about biology at the university. By chance, the Texas team learned that
Professor Voigt in San Francisco and one of his graduate students, Anselm
Levskaya, had already developed a bacterial light sensor. So the two groups
teamed up. The E. coli bacterium was chosen because it is easy for genetic
engineers to work with. But since E. coli live in the human gut, they cannot sense
light. Mr. Voigt and Mr. Levskaya put in a gene used by photosynthetic algae
to respond to light. The bacteria were also given genes to make them produce
an enzyme that would react with a chemical added to the growth medium. When
that reaction occurs, a black precipitate is produced. The scientists created
sort of a chain reaction inside the bacteria. When the bacteria are in the
dark, the enzyme is produced, turning the medium black. When the bacteria are
exposed to light, production of the enzyme is shut off. Copyright 2005 The New
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----------
Howard Bloom
Author of The Lucifer Principle: A Scientific Expedition Into the Forces of
History and Global Brain: The Evolution of Mass Mind From The Big Bang to the
21st Century
Recent Visiting Scholar-Graduate Psychology Department, New York University;
Core Faculty Member, The Graduate Institute
www.howardbloom.net
www.bigbangtango.net
Founder: International Paleopsychology Project; founding board member: Epic
of Evolution Society; founding board member, The Darwin Project; founder: The
Big Bang Tango Media Lab; member: New York Academy of Sciences, American
Association for the Advancement of Science, American Psychological Society,
Academy of Political Science, Human Behavior and Evolution Society, International
Society for Human Ethology; advisory board member: Institute for
Accelerating Change ; executive editor -- New Paradigm book series.
For information on The International Paleopsychology Project, see:
www.paleopsych.org
for two chapters from
The Lucifer Principle: A Scientific Expedition Into the Forces of History,
see www.howardbloom.net/lucifer
For information on Global Brain: The Evolution of Mass Mind from the Big
Bang to the 21st Century, see www.howardbloom.net
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