UCLA AIDS Institute researchers successfully removed CCR5 - a cell receptor to which HIV-1 binds for infection but which the human body does not need - from human cells. Individuals who naturally lack the CCR5 receptor have been found to be essentially resistant to HIV. Using a humanized mouse model, the researchers transplanted a small RNA molecule known as short hairpin RNA (shRNA), which induced RNA interference into human blood stem cells to inhibit the expression of CCR5 in human immune cells...
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