Hepatitis C virus (HCV) has infected millions of people worldwide and emerg
ed as a global health crisis. This review reports approaches currently bein
g taken to combat the virus. Viral targets have received the most attention
, particularly the NS3 serine protease where potent inhibitors have been de
scribed. Crystal structures of key replicative enzymes, NS3 protease, NS3 h
elicase, NS5B polymerase and now full-length NS3 protease-helicase, are ava
ilable. More recently, targeting the host system has become of interest, pa
rticularly inhibitors of inosine monophosphate dehydrogenase. Research aime
d at novel treatments for HCV disease is gathering pace and very recent dev
elopments in cell-based assay systems can only hasten the discovery of impr
oved therapies.