Background and Objectives
Most Interleukin (IL) -4 and IL-10 activates immune cells and induce a humoral immune response. However, horses recombinant version of IL-4 and IL-10 has not been studied to understand their immunomodulating activities.
This study aims to produce horses mature recombinant IL-4 and IL-10 in Escherichia coli. Immune-modulating activity of recombinant equine IL-4 and IL-10 were investigated in peripheral blood mononuclear cells (PBMC).
Equine PBMC stimulated with recombinant IL-4 and IL-10. A PBMC proliferation was measured by XTT assay and induction of cytokines were measured by enzyme-linked immunosorbent assay and real-time polymerase chain reaction.
Sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis of a molecular weight of 15 kDa shown for IL-4 and 19 kDa for IL-10. Recombinant IL-4 and IL-10 significantly induced cell proliferation at 250 ng / ml.
Results showed that IL-4 increased the expression of interferon-gamma (IFN-γ), IL-6, tumor necrosis factor-alpha (TNF-α), and IL-10, while the horse of recombinant IL-10 induced expression of IL-6, IFN-γ and TNF-α.
This study indicates that equine biologically active IL-4 and IL-10 can be produced in E. coli.
SOCS4 expressed by recombinant HSV protects against cytokine storm in a mouse model.
Oncolytic viruses are genetically engineered viruses are designed for the treatment of solid tumors, and is often combined with antitumor immunity of the host.
Challenges using oncolytic herpes simplex virus (oHSV) as a potent oncolytic agent is a potential host tissue damage caused by the production of various cytokines following oHSV intratumoral injection. HSV-suppressor of cytokine signaling 4 (SOCS4) recombinant virus was created to investigate whether it inhibits cytokine storm.
Recombinant HSV-SOCS4 and HSV-1 (F) is used to infect mice, and the level of representation of several cytokines, including monocyte chemoattractant protein-1, interleukin (IL) -1β, tumor necrosis factor-α, IL-6 and interferon-γ, in serum and bronchoalveolar lavage fluid (Balf) of infected mice is determined, and the immune cells in the spleen Balf and enumerated. lung damage, viral titers in the lungs, body weight and survival rate of infected mice was also determined and compared between the two groups.
The concentrations of cytokines rat-infected with HSV-SOCS4 significantly decreased compared to HSV-1 (F) -infected mice in Balf and serum, and a small cluster of differentiation (CD) Balf 11b + cells, and CD8 + CD62L + T cells and CD4 cells + CD62L + T spleen also been identified in mice with HSV-SOCS4-infected.
SOCS4 HSV-infected mice exhibited mild lung damage, a decrease in body weight loss and survival rate of 100%. The results of this study show that the regulator may SOCS4 protein useful for inhibiting cytokine overproduction, and that HSV-SOCS4 may provide a possible solution to control cytokine storm and its consequences after induction with oncolytic virus treatment.