Wujie Su, Haoyi Gu, Xiaoxia Zhang, Wenbing Wang, Fanchi Li, Bing Li
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引用次数: 0
Abstract
Baculovirus bacmids have been widely used in over-expression and gene deletion. Traditionally, baculovirus bacmids are developed by inserting an 8.6 kbp bacterial DNA cassette into baculovirus genomes either through homologous recombination in cultured cells or via in vitro cloning. In this study, by introducing Bsu36i-attached egfp to the 8.6 kbp bacterial DNA cassette, we develop a novel method for generating baculovirus bacmids. An 11.6 kbp bacterial DNA cassette containing the introduced egfp was used to generate an intermediate bacmid. With the EGFP reporter, purification was performed in cultured cells, increasing the proportions of recombinants. The intermediate bacmid containing the 11.6 kbp bacterial DNA cassette was obtained by transforming DH10B competent cells with viral DNA after 3 rounds of purification. The intermediate bacmid DNA was linearized by digestion with Bsu36i and then was co-transfected with the PCR-amplified 8.6 kbp bacterial cassette into BmN cells, where homologous recombination occurred between them. The final BmNPV bacmid was obtained by transforming DH10B competent cells with viral DNA. Capable of increasing the proportions of recombinants via purification and linearization, this method has great potential to be used for bacmid generation for baculoviruses, especially those that are not capable of producing high titers of viruses.
期刊介绍:
Biotechnology Letters is the world’s leading rapid-publication primary journal dedicated to biotechnology as a whole – that is to topics relating to actual or potential applications of biological reactions affected by microbial, plant or animal cells and biocatalysts derived from them.
All relevant aspects of molecular biology, genetics and cell biochemistry, of process and reactor design, of pre- and post-treatment steps, and of manufacturing or service operations are therefore included.
Contributions from industrial and academic laboratories are equally welcome. We also welcome contributions covering biotechnological aspects of regenerative medicine and biomaterials and also cancer biotechnology. Criteria for the acceptance of papers relate to our aim of publishing useful and informative results that will be of value to other workers in related fields.
The emphasis is very much on novelty and immediacy in order to justify rapid publication of authors’ results. It should be noted, however, that we do not normally publish papers (but this is not absolute) that deal with unidentified consortia of microorganisms (e.g. as in activated sludge) as these results may not be easily reproducible in other laboratories.
Papers describing the isolation and identification of microorganisms are not regarded as appropriate but such information can be appended as supporting information to a paper. Papers dealing with simple process development are usually considered to lack sufficient novelty or interest to warrant publication.