UNLABELLED The Sf9 cell line, derived from Spodoptera frugiperda, is used as a cell substrate for biological products, and no viruses have been reported in this cell line after extensive testing. We used degenerate PCR assays and massively parallel sequencing (MPS) to identify a novel RNA virus belonging to the order Mononegavirales in Sf9 cells. Sequence analysis of the assembled virus genome ...

conclusions: the recombinant baculovirus constructed in this work has proper characteristics to produce h5n1 influenza virus-like particles in sf9 cells. results: restriction map of pfastbacihnm1 plasmid confirmed the fidelity of the clone. the pcr carried out on the recombinant bacmids as template indicated that a proper homologous recombination has occurred between pfastbacihnm1 donor plasmid...

A cDNA encoding Gi6a, the a subunit of a heterotrimeric guani nucleotide-binding protein, was expressed in Sf9 ceUls using recombinant baculovirus. G16a in membrane extracts of Sf9 ceUs activated phospholipase C-.81 (PLC-p81) in the presence of guanosine 5'-[Vthio]triphosphate; the system could not be activated by A13+, Mg2+, and F-. The Gi6a in the cYtosolic fraction of Sf9 ceHs did not stimul...

A cDNA encoding Gi6a, the a subunit of a heterotrimeric guani nucleotide-binding protein, was expressed in Sf9 ceUls using recombinant baculovirus. G16a in membrane extracts of Sf9 ceUs activated phospholipase C-.81 (PLC-p81) in the presence of guanosine 5'-[Vthio]triphosphate; the system could not be activated by A13+, Mg2+, and F-. The Gi6a in the cYtosolic fraction of Sf9 ceHs did not stimul...

The role of the Autographa californica multiple nucleopolyhedrovirus (AcMNPV) immediate-early protein IE0 in the baculoviral infection is not clear. In this study, we constructed the recombinant virus vAcDeltaie0 null for ie0 expression by targeted mutagenesis replacing exon0 with the cat gene. We found that vAcDeltaie0 replicated efficiently in Spodoptera littoralis SL2 cells, which are poorly...

The 1035 base-pair (bp) open reading frame 59 (ORF59) of channel catfish virus (CCV) codes for an abundant hydrophobic membrane glycoprotein considered to be the major envelope glycoprotein of the virus. The ORF59 gene of CCV was cloned into the baculovirus genome by site-specific transposition and expressed in Spodoptera frugiperda cells (Sf9 cells). Expressed protein could be recognized by po...

The high performance liquid chromatography-electrospray ionization-mass spectrometry method has been applied to the measurement of bile acid transport activities in membrane vesicles obtained from a human bile salt export pump expressing Sf9 cells. The amounts of bile acids transported using the human bile salt export pump expressing Sf9 cells were determined using liquid chromatography-electro...

1. Rat histamine H2 receptors were epitope-tagged with six histidine residues at the C-terminus to allow immunological detection of the receptor. Recombinant baculoviruses containing the epitope-tagged H2 receptor were prepared and were used to infect insect Sf9 cells. 2. The His-tagged H2 receptors expressed in insect Sf9 cells showed typical H2 receptor characteristics as determined with [125...

We established a method for production of recombinant adeno-associated virus type 5 (rAAV5) in insect cells by use of baculovirus expression vectors. One baculovirus harbors a transgene between the inverted terminal repeat sequences of type 5, and the second expresses Rep78 and Rep52. Interestingly, the replacement of type 5 Rep52 with type 1 Rep52 generated four times more rAAV5 particles. We ...