| 摘要 |
The present invention provides compositions for RNA interference and methods of use thereof. In particular, the invention provides small hairpin RNAs (shRNAs) having modified promoters, including the Pol III U6 promoter, which may be used to increase the potency of shRNA by increasing the expression level. Modifications include constructs with a Pol II enhancer, such as the cytomegalovirus (CMV) enhancer, immediate-early promoter near the Pol III, e.g., U6 promoter, either upstream or downstream from the shRNA sequence and in either forward or backward orientation. Such constructs are useful for increasing the expression of the shRNA, thereby enhancing inhibition of a single nucleotide mismatched mutant allele. Functional and genomic and proteomic methods are featured. Therapeutic methods are also featured.
|
