A method for producing in a suitable insect host cell a selected polypeptide which comprises isolating a first DNA segment including a viral promoter from a virus capable of infecting said insect host cell, isolating from a suitable source a second DNA segment containing the sequence encoding said polypeptide, combining said first and second DNA segments to form a continuous strand of a third DNA segment including vector DNA in which said second DNA segment lies adjacent to and is in-frame with said promoter of said first DNA segment and contains transcription termination signals, forming a recombination vector by effecting recombination between said third segment and baculovirus genomic DNA, contacting said recombination vector so produced with said insect host cell under conditions such that said recombination vector segment becomes incorporated into said insect host cell to produce a treated insect host cell, and growing the host cell so treated and isolating the selected polypeptide from said host cell or culture fluids.
Further, a method for producing in a suitable insect host cell Hepatitis B virus surface antigen.
一种在合适的昆虫宿主细胞中产生所选
多肽的方法,包括从能够感染所述昆虫宿主细胞的病毒中分离出包含病毒启动子的第一DNA片段,从合适的来源分离出包含编码所述
多肽序列的第二DNA片段,将所述第一和第二DNA片段结合形成包含载体DNA的第三DNA片段的连续链,其中所述第二DNA片段与所述第一DNA片段的启动子相邻并在框内,且包含转录终止信号、通过在所述第三DNA片段和杆状病毒
基因组DNA之间进行
重组,形成
重组载体,在使所述
重组载体片段结合到所述昆虫宿主细胞中的条件下,将如此产生的所述
重组载体与所述昆虫宿主细胞接触,以产生处理过的昆虫宿主细胞,培养如此处理过的宿主细胞,并从所述宿主细胞或培养液中分离出所选
多肽。
此外,一种在合适的昆虫宿主细胞中产生乙型肝炎病毒表面抗原的方法。