I'm glad this little girl can hear. But I don't understand how this can possibly work. We can read: > “So basically, we find the inner ear and we open the inner ear and infuse the treatment, in this particular case using a catheter, over 16 minutes,” he said. Genes are in cells, right? It seems like what is being said is that this therapy goes in and alters all the cells. The altered cells then keep the alteration. W…
It's a virus that adds a bit of genetic code to cells in the ear. The new genetic code is the instructions for the protein that is broken in the the little girl (and other similar patients). The cell can then use the newly introduced DNA to make a protein. This protein restores the link between the auditory sensory cells and the auditory nerve cells. Regarding the word "infused", the viral particles are carried in an…
But also cells die - all cells are new in the human body after 7 years, right? (Or are we saying ear cells don't?) New cells are produced. Whatever creates new ear cells, needs to know to produce them with the update. I know that marrow creates blood cells.... and I'm not sure how replacement ear cells are created, but if it were something like marrow, this creating piece too that makes new cells also needs to be updated, right?
I have other questions too - eg does this viral deployment really impact every cell? You'd think that the ones nearest would get done repeatedly, whereas those that are less local would never be updated.
Also, if this infusion were to be near reproductive cells, would it also update those cells, so that cells used is reproduction would be updated, and the line would be permanently edited?