FSL-1 TFA, a bacterial-derived toll-like receptor 2/6 (TLR2/6) agonist, enhances resistance to experimental HSV-2 infection. FSL-1 TFA induces MMP-9 production through TLR2 and NF-κB/AP-1 signaling pathways in monocytic THP-1 cells.
体外研究
FSL-1 significantly reduces HSV-2 replication in human vaginal epithelial cells (EC).
FSL-1 induces significant resistance to experimental genital HSV-2 infection through elaboration of a specific cytokine response profile.
FSL-1 (50 ng/mL, 24 hours) induces MMP-9 expression at both mRNA and protein levels in human monocytic THP-1 cells.
FSL-1 activates the MAP kinase/NF-κB signaling pathway.
Cell Viability Assay
Cell Line:
V11I, V12I or V19I immortalized human vaginal EC
Concentration:
6 μg or 0.1 μg
Incubation Time:
Added at 24, 6 or just prior to HSV-2 inoculation (10pfu/well)
Result:
The 6 μg does produced significant reductions when delivered at 24 or 6 h prior to HSV-2 inoculation. The 0.1 μg dose produced reduced HSV-2 replication at 24 or 6 h prior to viral challenge.
体内研究
FSL-1 application significantly protectes against genital HSV-2 challenge in mice.
Animal Model:
Female Swiss-Webster mice (weighing 20-25 g)
Dosage:
2 or 6 μg
Administration:
Delivered vaginally using a positive displacement pipet, prior to or following viral challenge as specified for each experiment.
Result:
The 2 μg does delivered 6 h prior to HSV-2 challenge increased the ID50 (260 pfu) and LD50 (660 pfu) by 10-fold compared to DPBS vehicle control.
The single 6 μg dose produced significantly improved outcomes compared to DPBS vehicle application.
运输条件
Room temperature in continental US; may vary elsewhere.