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This Doesn't Sound Good - "Mutant Bacteria"

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Joined: 05 May 2001
Posts: 95
Location: Southern Indiana
This Doesn't Sound Good - "Mutant Bacteria" PostThu May 17, 2001 5:23 am  Reply with quote  

Caught this at
Just what I wanted to know

Mutant bacteria biowars threaten apocalypse now

Genetic engineers already have it within their grasp to devise a lethal bio-weapon for terrorists and rogue states, the British science publication Nature warns this week.

Small changes in the DNA of well-known bacteria and viruses could turn these agents into mass killers, the journal says.

The publication echoes warnings by a pair of Australian scientists, Dr Ron Jackson and Dr Ian Ramshaw, who accidentally created an astonishingly virulent strain of mousepox, a cousin of smallpox, among laboratory mice.

They realised that if similar genetic manipulation was carried out on smallpox, an unstoppable killer could be unleashed. They decided to publish their findings in January to draw attention to the potential misuse of biotechnology.

Nature warns: "Making subtle genetic alterations to existing pathogens to increase their virulence or durability in the environment, or to make them harder to detect or to treat with drugs, is within the limits of today's technology.

"With the decoding of a pathogen's entire genome now commonplace, and transgenic techniques advancing all the time, some researchers believe that the sinister potential of biology can no longer be ignored."

Biowarfare - use of germs or viruses such as anthrax or smallpox - has long been considered by military strategists. However, the risk has increased thanks to advances in knowledge about how genes work, new techniques for moving pieces of DNA around, and the relative ease with which a rogue organisation could build or hire a lab to build such a weapon.

Scientists interviewed by Nature ruled out, for the time being, the ability to build new, artificial agents from a set of component parts.

A far simpler way would be to tweak the performance of an existing bacteria to make it more resistant to antibiotics, they said.

The genetic sequences of bacteria such as tuberculosis, cholera, leprosy and the plague are already in the public domain - as is that of a food poisoning bug, Staphylococcus aureus, that is already becoming resistant to antibiotics.

By identifying the genes from Staphylococcus aureus that make the bug resistant, and inserting them into the other bacteria, a scientist could make a killer for which there would be scant defence.

Dr Willem Stemmer, chief scientist with Maxygen, a California pharmaceutical research firm, used one of these techniques to explore how resistance genes work, Nature reports.

He created a strain of the common intestinal bug Escherichia coli that was 32,000 times more resistant to the antibiotic cefotaxime than conventional strains. He destroyed the superbug in response to the American Society for Microbiology's concerns about potential misuse.

"It's time for biologists to begin asking what means we have to keep the technology from being used in subverted ways," said Harvard University molecular biologist Professor Matthew Meselson, who has often spoken of the dangers of biowarfare.

Agence France-Presse
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Joined: 05 May 2001
Posts: 95
Location: Southern Indiana
PostThu May 17, 2001 5:28 am  Reply with quote  

Sorry Thermit, et al

I put this in the wrong forum, meant for it to go in Other Trails.

oops, I think I must go to bed now!

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