Bacterial expression and purification of C1C2 domain of human factor VIII

Document Type : Research Paper


1 National Institute for Genetic Engineering and Biotechnology (NIGEB), P.O. Box 14155-6343, Tehran, I.R. Iran.

2 Islamic Azad University of Jahrom, P.O. Box 74135-355, Jahrom, I.R. Iran.


With the aim of the production of human factor VIII antigen and its corresponding antibody an epitope coding fragment of the light-chain of hFVIII, fused to a His6-tag, was isolated and over-expressed in Escherichia coli. The over-expressed hFVIII-epitope containing peptide was confirmed by its reaction with a rabbit serum directed against native hFVIII as well as antiHis6-tag antibody. An expression level of 6.5 mg/l (of culture) of the C1C2-related peptide was estimated. The purified product was used to develop antibody in rabbit. The
immunoblotting experiment confirmed that the rabbit polyclonal antibodies developed against the purified bacterially
expressed hFVIII sub-fragment, recognizes human plasma
derived FVIII. Both the produced hFVIII-related antigen and
its corresponding antibody are useful in experiments using
for detection and purification of hFVIII as well as the clinical
diagnosis of hFVIII related disorders.