What virus do better delivery vehicles for gene therapy
Viruses and humans have evolved together over millions of years in a game of superiority that often are not like humans sick or worse than the left. Now, the University of California, Berkeley, researcher has shown that the virus - in this case, a mild - can be forced to evolve to benefit humans. The adeno-associated virus, or AAV, is a common, though innocuous, resident of the agency that has received much attention in recent years as a carrier of genes are in gene therapy. Because, as 90 percent of people have the virus, however, their immune system is primed with antibodies to treat quickly and neutralize it, thwarting any attempt at gene therapy.UC Berkeley David Schaffer, associate professor of chemical engineering and member of the Helen Wills Neuroscience Institute,
with colleagues Narendra Maheshri, James T. Koerber and Brian Kaspar, decided to accelerate the process of viral evolution and direct change in the way that the virus down the bodys immune system, so it would be a viable vehicle for gene therapy. There are essentially two generations of accelerated evolution, requiring about two months working in the laboratory, they succeeded.Schaffer and his team at UC Berkeley and Ohio State University report their success in the current issue of Nature Biotechnology. Directed evolution has mainly done to alter the activity of an enzyme - in order to efficiently catalyze a new substrate or better able, a reaction, for example - or, better folder to make antibodies against certain targets, said Schaffer, who also a daughter of the wing
of the University of Berkeley, California Institute for Quantitative Biomedical Research (QB3).In the field virus, this approach is essentially untapped.This technique could be used to improve many other characteristics of AAV to make it a better delivery vector for genes. We think there are a variety of new problems, which could include, as the virus to target cells is not usually enter the well, or in the acceleration
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