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1167 points jbredeche | 1 comments | | HN request time: 0.216s | source
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MrZander ◴[] No.43998447[source]
> To accomplish that feat, the treatment is wrapped in fatty lipid molecules to protect it from degradation in the blood on its way to the liver, where the edit will be made. Inside the lipids are instructions that command the cells to produce an enzyme that edits the gene. They also carry a molecular GPS — CRISPR — which was altered to crawl along a person’s DNA until it finds the exact DNA letter that needs to be changed.

That is one of the most incredible things I have ever read.

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Balgair ◴[] No.43999018[source]
One other fun part of gene editing in vivo is that we don't actually use GACU (T in DNA). It turns out that if you use Pseudouridine (Ψ) instead of uridine (U) then the body's immune system doesn't nearly alarm as much, as it doesn't really see that mRNA as quite so dangerous. But, the RNA -> Protein equipment will just make protiens it without any problems.

Which, yeah, that's a miraculous discovery. And it was well worth the 2023 Nobel in Medicine.

Like, the whole system for gene editing in vivo that we've developed is just crazy little discovery after crazy little discovery. It's all sooooo freakin' cool.

https://en.wikipedia.org/wiki/Pseudouridine

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alecco ◴[] No.43999243[source]
> [...] then the body's immune system doesn't nearly alarm as much, as it doesn't really see that mRNA as quite so dangerous

Please tell me there are measures to prevent this going into the wild. Please tell me this won't be used in large-scale industrial farming.

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imcritic ◴[] No.43999695[source]
Farming? This will be used in warfare.
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Muromec ◴[] No.44000169[source]
That would be less effective than bio and chemical weapons are. Which are not used because they just suck
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kulahan ◴[] No.44000716[source]
I’m not sure of by “they just suck” you meant to imply that they’re ineffective. If that’s the case, I strongly disagree. They are not used because somehow all countries pretty much agreed they’re way TOO effective and horrific. Nobody wants it used on them, so nobody uses it on anyone else.

I cannot imagine a more effective weapon than an invisible gas that melts you alive, and there are MANY chemical and bio examples of these types of weapons.

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1. beeflet ◴[] No.44000918[source]
The ceiling for the destruction caused by biological weapons is far greater than chemical weapons. There is no chemical weapon that can hijack the victim to make more of it.