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France issues moratorium on prion research after fatal brain disease strikes

sciencemag.org

201–210 of 305 posts

Re: France issues moratorium on prion research after fatal brain disease strikes

#201

Scary. I think and airborne human transmissible prion disease that kill in a few years is the kind of event that can bring our society back to prehistoric living in just a few decades. Hope it never happens.

Prions aren't airborne. vCJD and mad cow spread by a feedback loop involving slaughtered infected animal brains being fed to the same animal stock. This case was a technician who stabbed herself with a tool heavily coated in brain matter from infected animals. It's not like a virus where just a few particles is enough to bootstrap an infection. At least, it's never been seen.

Re: France issues moratorium on prion research after fatal brain disease strikes

#202
post #37

From Wikipedia [1]: « Prions are misfolded proteins with the ability to transmit their misfolded shape onto normal variants of the same protein. They characterize several atal and transmissible neuro degenerative diseases in humans and many other animals. It is not known what causes the normal protein to misfold, but the abnormal three-dimensional structure is suspected of conferring infectious properties, collapsing…

Well we don't really know that, because diagnosis is normally confirmed post-mortem. There could be many people walking around infected with prions that show no symptoms at all.

[deleted]

Re: France issues moratorium on prion research after fatal brain disease strikes

#203

This coming so close after the announcement by DeepMind that they're releasing the data on hundreds of thousands of protein folding structures has me with a growing knot in my stomach. As generous and useful on a human-scale an announcement as that was, my first thought was how it could be abused. So too prion research. Who'd've thunk that muscle bulk could be so scary? (!)

I just wanted to add a comment about your muscle bulk comment. Protein in protein shakes is usually denatured or rather just a collection of amino acids. Proteins that are synthesized by the body have a structure to them and Prions are simply misfolded representations of those proteins. The process of destroying a Prion involves denaturing it by removing its structure. I don't believe that muscle tissue is anymore re…

Just for clarity - my last line there was me being facetious!

I was under the impression that even boiling or bleaching did little to kill prions? I seem to recall that even autoclaving surgey equipment did nothing to them, so they had to be thrown?

Otherwise, yes - there're lands of opportunity in the science of protein un/folding.. but as much, there's scope for naughtiness too.

Seems to me like this level of tech - or, at least - that which may be available in this domain over the next 50 years, could be one of those existential Great Selector/Filter events that biological civilisations might face over their evolution.

Re: France issues moratorium on prion research after fatal brain disease strikes

#204
post #173

I remember hearing people arguing that the Covid lab leak hypothesis was implausible because of stringent safety measures.

The Covid lab leak hypothesis is primarily implausible because of Occam's razor.

The lab leak hypothesis is less plausible than the natural leak hypothesis only if you exclude the fact that gain-of-function research on Coronavirus was being done in the Wuhan Lab. When you include that necessary fact, it becomes the most parsimonious.

If this researcher becomes ill with CJD, we'll know it's because, beyond a reasonable doubt, she was mishandling prions in a laboratory setting, and not because she ate some infected meat from a bazaar.

Re: France issues moratorium on prion research after fatal brain disease strikes

#205
post #148

Earlier quoted context omitted.

It's not a nitpick, it's just wrong. Bad things happening is a cost which is both negative and external. The use of the term "negative externality" works here.

Negative externality is an economic term which describes a specific market failure. A research lab leak (or nuclear meltdown, or whatever) is a rare accident, not a negative externality. It would be like me saying the theory of relativity just means a theory about how everything is relative. That's obviously wrong. You can't just break down academic terms into their separate words. It doesn't make sense.

Third parties suffering a disease is the negative externality.

There's no difference between a steel mill leaking sulphur in the course of producing steel and a biotech company releasing prions in the course of producing medicines. Radiation leaks in the course of producing electricity are likewise externalities.

Re: France issues moratorium on prion research after fatal brain disease strikes

#206

Earlier quoted context omitted.

Serious question should I be avoiding traveling to the UK over this??

No, that was 20-30 years ago.

At this point, the best prevention is to avoid eating anyone who lived in Britain 20-30 years ago

Re: France issues moratorium on prion research after fatal brain disease strikes

#207

Earlier quoted context omitted.

To prion diseases? Mainly in that they're not that common, more like a weird aberration than something that actively fights and adapts for its own survival like bacteria and viruses. I mean cancer is not contagious, but it still kills millions a year.

Strictly speaking, contagious cancer is a thing, but not in humans. See https://en.wikipedia.org/wiki/Canine_transmissible_venereal_...

Yet.

Re: France issues moratorium on prion research after fatal brain disease strikes

#208

I wonder if it would be possible to make a designer protein that latches onto prion “seed crystals” to neutralize it. Some of the recent advances in protein folding and crispr make it so this might be starting to be something in the realm of possibility.

Gotta be some of the most terrifying technology imaginable.

That idea would be to cure it, prions are terrifying.

Re: France issues moratorium on prion research after fatal brain disease strikes

#209
post #56

Prions are weird. I was at UCSF during the time they went from a fringe theory to an established fact and a nobel prize. The professor who studied them (Prusiner) had to overcome tons of resistance and the experiments were heroic (often waiting months for mice to die). It's really funny that everybody resisted it until somebody mentioned that there was a plausible physical mechanism of refolding catalysis.

Is it because many researchers put their ego first over the science? It's so many times that they ridicule ideas, that often amounts to bullying and then they rarely even say sorry when it turns out they were wrong. Why won't academia flush out these types of people? The toxic atmosphere with no way of getting rid of bad apples is what put me off from studying.

it's nuanced. prusiner himself was a bully who ran a toxic lab. my group collaborated with him and we got an eyeful.

Re: France issues moratorium on prion research after fatal brain disease strikes

#210

Earlier quoted context omitted.

No, that was 20-30 years ago.

At this point, the best prevention is to avoid eating anyone who lived in Britain 20-30 years ago

Hopefully that's something we can all agree upon!
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