Small interfering RNA (siRNA) has garnered much interest as a potential drug because of its strong gene-silencing activity.[1] Toward the success in siRNA therapeutics, many strategies have been developed for efficient siRNA delivery into the cytosol of target cells.[2] Among them, siRNA conjugates have arisen as one of the promising strategies in siRNA delivery, as siRNA can be readily conjugated to a functional molecule to acquire the ability of “ ...