Seoul National University · 生化学・遺伝学・分子生物学
Professor Yeon Ho Je's research lab specializes in virology and molecular entomology, focusing on baculovirus-based protein expression systems and the development of novel insect growth regulators. The lab investigates host-virus interactions, particularly how baculoviruses like AcMNPV manipulate host gene expression to enhance protein production or serve as bioinsecticides. A key focus is on engineering baculoviruses to co-localize foreign proteins within occlusion bodies for improved yield and stability, while also exploring natural compounds from entomopathogenic fungi as sustainable alternatives to chemical insecticides. The lab integrates omics technologies such as RNA-seq to decode regulatory networks in insect hosts during viral infection.
Figures are computed from collected data and may differ slightly.
Current baculovirus expression systems typically produce soluble proteins that accumulate within the infected insect cell or are secreted into the growth medium. A system has now been developed for the incorporation of foreign proteins, along with the matrix protein, polyhedrin, into baculovirus occlusion bodies. Initial studies showed that a recombinant virus expressing a translational fusion between polyhedrin and GFP did not form occlusion bodies. However, a baculovirus coexpressing native po
Using RNA-seq, we have identified groups of immune-regulated and juvenile hormone-regulated genes that are suppressed by infection with active AcMNPV. This information and further studies on the regulation of host gene expression by AcMNPV will provide the tools needed to enhance the utility of the virus as an effective protein expression system and as an insecticide.
Abstract Insect growth regulators (IGRs) are effective alternatives to chemical insecticides because of their specificity and low environmental toxicity. Entomopathogenic fungi are an important natural pathogen of insects and have been developed as biological control agents. They produce a wide range of secondary metabolites such as antibiotics, pesticides, growth‐promoting or inhibiting compounds and insect attracting agents. In this study, to explore novel IGR substances from entomopathogenic
In this study, we successfully silenced SBV in its host, A. cerana, by the application of exogenous dsRNA produced from an entomopathogenic bacteria, Bt. These results suggested that Bt could be a useful dsRNA production platform to control viral pathogens in their host insects. © 2019 Society of Chemical Industry.
Insect-killing (entomopathogenic) fungi have high potential for controlling agriculturally harmful pests. However, their pathogenicity is slow, and this is one reason for their poor acceptance as a fungal insecticide. The expression of bumblebee, Bombus ignitus, venom serine protease (VSP) by Beauveria bassiana (ERL1170) induced melanization of yellow spotted longicorn beetles (Psacothea hilaris) as an over-reactive immune response, and caused substantially earlier mortality in beet armyworm (Sp
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