Silk gland specific secretory expression of egfp gene in silkworm Bombyx mori with rAcMNPV system

Silk gland specific secretory expression of egfp gene in silkworm Bombyx mori with rAcMNPV system To evaluate the possibility of establishing an in vivo baculovirus expression system in a silk gland specific secretory way, the recombinant Autographa californica nucleopolyhedrovirus (AcserpegfpΔEGT) carrying the reporter gene egfp downstream of silkworm ser1 promoter and signal peptide coding sequence was generated. The purified recombinant baculovirus AcserpegfpΔEGT was injected into the haemocoel of newly ecdysed 5 th instar silkworm larvae at the amount of 10 6 pfu per larva. At 5 days post injection, green fluorescence derived from EGFP could be observed with fluorescent microscope in only the silk gland but not other tissues after dissection of the silkworm. By making an opening on the silk gland wall, green fluorescence could be observed in the outflow of silk gland indicating the secretion of EGFP and the effectiveness of ser1 signal peptide. Western blotting assay confirmed that EGFP exists in the water-soluble part of cocoon silk too. We also established a simple protocol to purify EGFP from the secreted silk proteins. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Silk gland specific secretory expression of egfp gene in silkworm Bombyx mori with rAcMNPV system

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Publisher
Springer-Verlag
Copyright
Copyright © 2005 by Springer-Verlag/Wien
Subject
Biomedicine; Medical Microbiology; Virology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-004-0479-4
Publisher site
See Article on Publisher Site

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