WORCESTER, Mass.--(BUSINESS WIRE)--RXi Pharmaceuticals Corporation (Nasdaq: RXII), a recognized leader in RNAi-based therapeutics, announced today that, as part of its collaboration with miRagen Therapeutics, Inc., positive data were generated demonstrating that RXi’s sd-rxRNA™ technology can be used, in vitro, to specifically enhance the activity of a microRNA of high interest to miRagen.