My summary for programmers:
When you get a viral infection, immune cells make a signalling protein called a IFN-1 (Type I Interferon) cytokine, and this flips a boolean flag to True on a bunch of genes (interferon-stimulated genes or ISGs) that produce a bunch of proteins (hundreds) that control the infection. ISG15 is one of them and its role appears to be to downregulate and to limit the inflammation.
The paper title refers to a ISG15 deficiency, meaning if you are dificient in ISG15 that inflamation limitation goes away. But the paper is actually about how in people that naturally have a ISG15 deficiency, there is an always-on low level expression of some of these pro-inflamation genes. So they take that as a safe level.
The did RNA sequencing on experimental ISG15 deficient cells and from heatlhy individuals, identified the mutations, narrowed down to 10 genes (antiviral ones not inhibitors) that in combination significantly inhibited viral replication. They stuck the RNA for such genes in lipid nanoparticles such that they enter host cells, whose ribosomes happily read the RNA like a turing head reads a tape in base 20 and produce proteins encoded by these genes, similar to how the mRNA vaccine works.
So why not dose with the IFN-I directly? Three referenced papers show its "poorly tolerated with significant side effects" and all those downregulators that get expressed limit the inflammation response.
Disclaimer: IANAB (not a biologist) corrections might be due..
I think we'll never have this "one shot," but continue to find tailored treatments for individual conditions. There's no way out of this complexity with "one simple trick," which seems really appealing to the people who determine what gets popular in social media and seemingly politics now. Its just going to be boring and grueling academia and medical trials that are hard for the layperson to understand, hence the important of funding these programs. The recent right-wing election wins and thus a right-wing government cutting all manner of medical grants is supported by the "one weird trick" crowd. Hopefully, the USA will have better leadership in the future to get us back to actual science and to find actual new treatments.
Already, even on HN, the top comments are conspiracy-culture coded, "but, but this one company bought the patent and disappeared with it!" Sigh.
The big question is if a species can eventually reach some point of collective enlightenment where they leave these primitive impulses behind. But based on the current state of humanity, I'm not to optimistic.
You absolutely can have utopian beings. In fact, I'd argue the greed-based societies get caught in the great filter and if there is a space faring race, its absurdly ethical and fair and, to me, explains the Fermi paradox. They're out there and maybe they see Earth but it would be hugely unethical to intervene here. The proper thing to do would be to only observe us from afar.
If this was a movie or novel maybe the Wow signal was them messing up, or a defector amongst their midst who disagrees with full isolation policies. But most likely it'll end up being something simple. The last good theory I heard was it domestic and was reflected off orbiting space junk, but who knows.