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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Flufenoxuron, an insect growth regulator, promotes peroral infection by nucleopolyhedrovirus (BmNPV) budded particles in the silkworm, Bombyx mori L.

A novel method was developed to infect perorally the silkworm Bombyx mori L. with budded particles of nucleopolyhedrovirus (BmNPV) using flufenoxuron, an insect growth regulator. NPV vectors are used to obtain proteins that occur naturally in minute amounts. NPV vectors are constructed conventionally by replacing the polyhedrin gene with the foreign gene of interest. These vectors thus do not produce polyhedra. The budded virus particle suspension of these vectors is produced in a cell culture and used as the stock inoculum. Budded NPV particles do not infect their host perorally. The inoculum is injected manually into the individual host using a syringe. It was found that B. mori L. fed on the insect growth regulator flufenoxuron were sensitive to BmNPV budded particles given perorally. Over 90% of B. mori L. ingesting BmNPV budded particles (1.3 x 10(6) TCID(50) units per larva) after consuming an artificial diet for 24 h, containing 0.1% (w/w) flufenoxuron died of the viral infection. The peroral inoculation of BmNPV budded particles by flufenoxuron may thus lead to industrial pharmaceutical production using a baculovirus vector for large numbers of insect hosts.[1]


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