Abstract: A chimeric signal peptide for protein expression includes an N-region, a hydrophobic region, and a C-region, wherein the N-region and the C-region are from a same signal peptide of a first protein and the hydrophobic region is from a signal peptide of a second protein, wherein the first protein is different from the second protein. The first and second protein are independently selected from the group consisting of BM40, IL2, HA, Insulin, CD33, IFNA2, IgGK leader, AZU, and SEAP.

Abstract: A host cell for protein expression having a lower expression level of a gene, as compared to a wild-type cell, wherein the gene is selected from HDAC8, Dab2, Caspase3, Sys1, Ergic3, Grasp, Trim 23, or a combination thereof. The host cells are CHO cells. The lower expression level of the gene results from RNA interference, which may be achieved by transfecting a vector that contains an shRNA targeting the gene.

Abstract: Disclosed herein is a recombinant viral construct and its uses thereof. The recombinant viral construct is capable of simultaneously expressing three exogenous proteins, including a classical swine fever virus (CSFV) antigen, a porcine circovirus type 2 (PCV2) antigen, and an immunomodulatory protein. The recombinant viral construct is hence useful as a bio-tool for simultaneously producing multiple antigens of a bi-subunit vaccine.

Abstract: Disclosed herein is a recombinant viral construct and its uses thereof. The recombinant viral construct is capable of simultaneously expressing three exogenous proteins, including a classical swine fever virus (CSFV) antigen, a porcine circovirus type 2 (PCV2) antigen, and an immunomodulatory protein. The recombinant viral construct is hence useful as a bio-tool for simultaneously producing multiple antigens of a bi-subunit vaccine.

Abstract: Disclosed herein is an Autographa californica multiple nucleopolyhedrovirus (AcMNPV) based hybrid baculovirus and its uses thereof. The AcMNPV based hybrid baculovirus is capable of infecting different hosts, and comprises Maruca vitrata multiple nucleopolyhedrovirus (MaviMNPV) genes of lef1, orf1629, pk1, CDS1, CDS2, and lef2; and AcMNPV/MaviMNPV-hybrid genes of egt and orf152. The AcMNPV based hybrid baculovirus is therefore useful as a bio-insecticide by its capability of delivering genes of toxic proteins to be expressed in at least two different insect hosts.

Abstract: Disclosed herein is an Autographa californica multiple nucleopolyhedrovirus (AcMNPV) based hybrid baculovirus and its uses thereof. The AcMNPV based hybrid baculovirus is capable of infecting different hosts, and comprises Bombyx mori nuclear polyhedrosis virus (BmNPV) genes of lef9, vlf1, p6.9, and vp80; Maruca vitrata multiple nucleopolyhedrovirus (MaviMNPV) genes of lef2, orf1629, and pe38; and AcMNPV/BmNPV/MaviMNPV-hybrid genes of pk1, lef8, DNA pol, GP41, helicase, orf94, VP1054, orf65, lef4, lef5, and orf99. The AcMNPV based hybrid baculovirus is therefore useful as a bio-tool or bio-insecticide for its capability of delivering genes for production or expression of toxic proteins in at least three different insect hosts.

Abstract: Disclosed herein is an Autographa californica multiple nucleopolyhedrovirus (AcMNPV) based hybrid baculovirus and its uses thereof. The AcMNPV based hybrid baculovirus is capable of infecting different hosts, and comprises Maruca vitrata multiple nucleopolyhedrovirus (MaviMNPV) genes of lef1, orf1629, pk1, CDS1, CDS2, and lef2; and AcMNPV/MaviMNPV-hybrid genes of egt and orf152. The AcMNPV based hybrid baculovirus is therefore useful as a bio-insecticide by its capability of delivering genes of toxic proteins to be expressed in at least two different insect hosts.

Abstract: Disclosed herein is an Autographa californica multiple nucleopolyhedrovirus (AcMNPV) based hybrid baculovirus and its uses thereof. The AcMNPV based hybrid baculovirus is capable of infecting different hosts, and comprises Bombyx mori nuclear polyhedrosis virus (BmNPV) genes of lef9, vlf1, p6.9, and vp80; Maruca vitrata multiple nucleopolyhedrovirus (MaviMNPV) genes of lef2, orf1629, and pe38; and AcMNPV/BmNPV/MaviMNPV-hybrid genes of pk1, lef8, DNA pol, GP41, helicase, orf94, VP1054, orf65, lef4, lef5, and orf99. The AcMNPV based hybrid baculovirus is therefore useful as a bio-tool or bio-insecticide for its capability of delivering genes for production or expression of toxic proteins in at least three different insect hosts.

Abstract: Provided herein are isolated or synthesized Rhopalosiphum padi virus (RhPV) nucleic acids having promotor activities, and vectors containing the isolated or synthesized RhPV nucleic acids for gene delivery in insect expression systems.

Abstract: Provided herein are methods and systems for identifying 2A-like sequences with translational self-cleavage activity in an insect expression system.