medGadget -- Caltech scientists have developed a new method that ferries small-interfering RNA (siRNA) strands into tumors using specialty nanoparticles. Once inside, the siRNA, which was specifically grown to inhibit the expression of the RRM2 gene involved in the tumor cells’ reproduction , is released and is free to do its magic. Because siRNA is used to inhibit the production of a protein necessary for the tumor’s growth, the technique overcomes the difficult task of trying to attack the protein itself.
