HCV E2 CONSTRUCT COMPOSITIONS AND METHODS

摘要

The invention provides a construct comprising the ectodomain of the Hepatitis C virus (HCV) E2 sequence and a mammalian expression system therefore. More particularly, the invention relates to a construct comprising the CMV promoter, prolactin signal sequence, the ectodomain of HCV E2 sequence truncated at aa 664, a thrombin cleavage site and the human Fc domain. The invention also relates to an expression system for the construct, which is stably expressed in human embryonic kidney cells 293T. Continuous protein expression in a bioreactor allows for 4 mg of purified protein per liter of cell supernatant.