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Development of a novel expression vector system using Spodoptera exigua nucleopolyhedrovirus
1Division of Applied Biology and Chemistry, College of Agriculture and Life Sciences, Seoul National University, Suwon, Korea.
Molecules and Cells
|December 22, 1999
Summary
Researchers developed a novel Spodoptera exigua nucleopolyhedrovirus (SeNPV) expression system. This system enhances foreign protein expression, showing higher beta-Galactosidase activity for improved pesticidal properties.
Area of Science:
- Molecular Biology
- Virology
- Insect Pathology
Background:
- Spodoptera exigua nucleopolyhedrovirus (SeNPV) is a valuable tool in insect pest control.
- Developing efficient expression vector systems is crucial for enhancing SeNPV's efficacy.
Purpose of the Study:
- To create a novel SeNPV-based expression vector system.
- To evaluate the expression of foreign genes using the SeNPV polyhedrin promoter.
- To assess the potential for improving SeNPV's pesticidal properties.
Main Methods:
- Examined SeNPV polyhedrin expression characteristics in S. exigua (Se301) cells.
- Constructed a polyhedrin-based transfer vector (pSeKSK2).
- Generated a recombinant virus (SeK1-LacZ) by inserting the E. coli lacZ gene into SeNPV.
- Measured beta-Galactosidase activity in Se301 cells infected with SeK1-LacZ.
Main Results:
- SeNPV exhibited higher polyhedral inclusion body (PIB) formation and polyhedrin expression compared to Autographa californica nucleopolyhedrovirus (AcNPV).
- The recombinant SeK1-LacZ showed approximately 1.3 times higher beta-Galactosidase activity than BacPAK6.
- The SeNPV expression system demonstrated efficient foreign gene expression.
Conclusions:
- The developed SeNPV expression vector system is effective for foreign protein expression.
- This system holds significant potential for enhancing SeNPV's pesticidal capabilities through the insertion of pesticidal genes.