title: A vehicle for DNA transfer and for recovery of transferred genes: lambda Charon phage-pBR322 hybrid.
abstract: Recombinant Charon 4A phages accommodating the Herpes simplex virus (HSV-1) thymidine kinase (tk) gene, the ampicillin-resistance (ApR) gene, and the replication origin of pBR322 were constructed. The phage DNA was introduced into mouse Ltk- cells by a free DNA transfer method or phage-mediated DNA transfer method [Ishiura et al., Mol. Cell. Biol. 2 (1982) 607]. Analyses of the physical state of the transferred DNA in the recipient cell genome showed that a DNA fragment as long as 12.7 kb was integrated intact into 67% and less than 40% of the Ltk- transformant cells by phage-mediated DNA transfer and by free DNA transfer, respectively. We also developed a new rapid method for recovery of the transferred gene from the Ltk+ cell into Escherichia coli; the method depends on the fact that the recombinant lambda phage carrying the ApR gene and replication origin of pBR322 transduces lambda-lysogenic bacteria to ApR and is maintained as a plasmid. Using this method the HSV-1 tk gene from one Ltk+ transformant was rapidly and successfully recovered without any rearrangement of the target sequence.
mesh_terms: D000818:Animals; D010582:Bacteriophage lambda / Q000235:genetics*; D004274:DNA, Recombinant; D005822:Genetic Vectors; D007739:L Cells; D051379:Mice; D010957:Plasmids; D018139:Simplexvirus / Q000235:genetics; D013937:Thymidine Kinase / Q000235:genetics
chemical_list: D004274:DNA, Recombinant; D013937:Thymidine Kinase