N4 Pharma Plc, a specialist pharmaceutical company, develops nanoparticle silica delivery systems to enhance the cellular delivery and potency of cancer treatments and vaccines in the United Kingdom. It develops Nuvec, a silica nanoparticle delivery system, which has an irregular surface structure that traps and protects siRNA/RNA/DNA; and Liptide, a platform to deliver a proprietary siRNA sequence to silence a fibrotic gene. The company also engages in the development of N4 101, an orally delivered inflammation inhibitor which is in the pre-clinical development for treatment of inflammatory bowel disease; and ECP105 for the prevention of ocular scarring. N4 Pharma Plc was incorporated in 1979 and is based in London, the United Kingdom.