title: Recombinant retroviral DNA yielding high expression of hepatitis B surface antigen.
abstract: A genomic fragment of hepatitis B virus encoding the surface antigen (HBsAg) was inserted into the proviral genome of Moloney mouse sarcoma virus (MSV), obtained from the mouse cell line G8 -124. The recombinant DNA was introduced into NIH 3T3 mouse fibroblasts. Cells, morphologically transformed by the oncogene of MSV (v-mosM) were selected, established as cell lines and tested for expression of HBsAg. An expression level of up to 4.5 micrograms/10(7) cells/day was detected.
mesh_terms: D000818:Animals; D002460:Cell Line; D002478:Cells, Cultured; D003001:Cloning, Molecular; D004262:DNA Restriction Enzymes; D004274:DNA, Recombinant / Q000378:metabolism*; D004279:DNA, Viral / Q000235:genetics*; D005796:Genes; D005814:Genes, Viral; D006514:Hepatitis B Surface Antigens / Q000235:genetics*; D006515:Hepatitis B virus / Q000235:genetics / Q000276:immunology*; D051379:Mice; D008815:Mice, Inbred Strains; D008970:Molecular Weight; D008979:Moloney murine leukemia virus / Q000235:genetics*; D009693:Nucleic Acid Hybridization; D014162:Transfection
chemical_list: D004274:DNA, Recombinant; D004279:DNA, Viral; D006514:Hepatitis B Surface Antigens; D004262:DNA Restriction Enzymes