Minute capsules which are engineered to imitate as part of immune system of the body could fortify their response to vaccines found researchers. These tiny capsules called as the nanoparticles, are a message sent from cells in the skin to foreshadow a threat.
In latest study researchers from Duke University, gave the nanoparticles as a part of vaccine to mice. They found mice successfully coped with the lethal infections. The vaccination involves priming the immune system to identify particular bacteria or virus so that it can quickly counter-attack in the event of a real infection.
In addition to that many vaccines contain extra ingredients, which are designed to improve the priming process. These vaccines will deactivate or weaken the version of bacteria or virus which is in question. The researchers aiming to usurp a natural immune reaction involving cells known as mast cells found in the skin.
These cells act as key factor for the driving force behind the itching and swelling, when occurs an allergic reaction. But these cells are also thought to play a key role in the inherent immune system that reacts to infection. Researchers believe that when they encounter certain bacteria and viruses, they liberate tiny capsules known as granules.
These granules contain a body chemical known as TNF (tumour necrosis factor). They pass through adjoining lymph nodes, where immune reaction to infection may start to be mobilized. These granules are created by researchers, which carry TNF, designed to perform in a similar manner.
Injecting them at the same time as the vaccine they pass through lymph node and discharge the chemical as if send by mast cell. They expectantly generate a more powerful immune reaction to the vaccine contents. The vaccinated mice had shown improved survival rate against influenza A virus.
Now, it would be possible to add diverse immune system chemicals to the nanoparticles to modify the response to exactly the type of vaccine involved. According to lead author Dr Soman Abraham, the chemical use in humans was already approved in US. They are basing their materials on their study of mast cells in nature.
This is a well-versed application to deliver the precise material to the right place in the body to get the most effective immune reaction, concluded Dr Abraham. The study was published in the journal Nature Materials.