German scientists have succeeded in snipping the virus that causes AIDS out of human cells, leaving them healthy again. The procedure is a breakthrough in bio-technology and fuels hope of a cure for AIDS. Current therapies can only limit the spread of HIV and not remove it from the body.
The scientists' method used the ability of so-called recombinase enzymes to cut strands of DNA at certain places like a pair of scissors and recombine the strands. The new enzyme, Tre, always recognized the right spot to snip the DNA where the HIV started. The scientists said it recognized a characteristic HIV sequence that scarcely ever mutated.
The laboratories artificially evolved Cre into Tre through more than 120 recombinase generations. Hauber said the cell then flushed out the snipped-away DNA as waste. "After that, it is healthy," Hauber said.
German Scientists Develop New Approach to Treating AIDS
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