Gene optimization, protein expression, purification and characterization of the HDV antigen for diagnosis / 中华实验和临床病毒学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To prepare HDAg with biological activities as a candidate of diagnostic reagent.</p><p><b>METHODS</b>To synthesize HDV gene fragment after codon optimization. To construct a thio-fused recombinant plasmid based on M48 expression vector. To express in E. coli induced by IPTG. To purify the protein by affinity chromatography followed by characterization in ELISA:</p><p><b>RESULTS</b>Plasmid construction was verified by enzyme digestion. SDS-PAGE indicated the molecular weight of the protein was the same as we expectation. ELISA proved its affinity with HDV antibodies.</p><p><b>CONCLUSION</b>HDAg was obtained successfully and it will pave the road to the research of HDV diagnostic reagent.</p>