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From the FAQ: "But, there are certain spots on HIV that rarely mutate, and these are the same highly specific targets that controller immune systems already rec
by andrewfong 13y ago
From the FAQ: "But, there are certain spots on HIV that rarely mutate, and these are the same highly specific targets that controller immune systems already recognize naturally. Our vaccine trains your immune system to attack those weak spots so that the virus is crippled even when it mutates. In other words, our vaccine shows the prime targets to your immune system so that it does not have to waste time and energy trying to figure out which ones are the best points of attack."
How does the vaccine train your immune system? My (very limited) understanding of vaccines is that you would normally train the immune system to target these weak spots by creating an antibody that would bind to said weak spot. But from elsewhere on the page, it says that the project isn't working on an antibody approach. What am I missing?
- cma 13y agoI think they mean they train the immune system by creating an antigen, not an antibody, that mimics or is identical to the nonmutating antigen on the virus. Your immune system upregulates appropriate antibodies on its own through a feedback effect when certain cells (B cell?) that have randomly generated embedded antibodies on their cell membranes come across an antigen. These cells begin to divide faster, and the children code for and generate the same antibody as the parent. This ups the amount of cells with that particular antibody, increasing the probability that the antigen will be targeted. They trigger inflammation to increase the flow of blood, letting more immune cells per second pass through scan the area (probably not helpful for aids, but for a cut, a splinter or a tumor that is fixed in place it is useful). They also release freestanding antibodies with the same binding profile that can disable viruses and trigger other immune cells to come slurp them up. I think when they say they aren't taking an antibody approach they mean they aren't making an artificial antibody and just injecting it for passive immunity (sort of like injecting an immune system that can't do its own adaptation and upregulation) The main thing with vaccines I am still confused about is what the difference between them and allergy shots is, and how do the two end up with opposite effects? I guess there is somehow a different reaction to a spike of something vs a repeated presence. (Edit: never mind.. microspheres.. who knew?)
- Buttons840 13y agoFascinating! What do you think the best resource is for brushing up on this stuff? I haven't had a good biology class for a while.
- cma 13y agoI'd say watch the Kahn academy biology videos, his wife is an immunologist or something so it had a big focus on the adaptive immune system. Goodsell's "The Machinery of Life" is really good too, but for molecular bio in general. Those and just random magazine articles, etc. are really the only two things read/watched though, so others may know of some better options.
- icinnamon 13y agoInstead of using standard vaccine practices (a dead/damaged/live version of the virus) to train your immune system, we are using these synthetic entities called microspheres. They are made of the same material as internal sutures, and your body takes them up and is able to have a memory response. Check out this youtube clip of the microspheres in action: http://www.youtube.com/watch?v=0XKy9byo67w http://www.youtube.com/watch?v=0XKy9byo67w The advantage of using microspheres is that the vaccine is now monumentally safer than previous gene therapy or other vaccine attempts.