Short interfering RNAs having a hairpin structure containing a non-nucleotide loop

摘要

This invention provides a short interfering hairpin RNA having the structure X1-L-X2, wherein X1 and X2 are nucleotide sequences having sufficient complementarity to one another to form a double-stranded stem hybrid and L is a loop region comprising a non-nucleotide linker molecule, wherein at least a portion of one of the nucleotide sequences located within the double-stranded stem is complementary to a sequence of said target RNA.