Interaction between polymorphonuclear leukocytes and varicella-zoster virus-infected cells

Area of Science:

• Virology
• Immunology
• Cell Biology

Background:

• Varicella-zoster virus (VZV) causes chickenpox and shingles.
• The immune response to VZV involves both cellular and humoral components.
• Understanding the interaction between immune cells and infected cells is crucial for antiviral strategies.

Purpose of the Study:

• To investigate the antiviral effect of polymorphonuclear leukocytes (PMNL) on VZV-infected human fibroblasts.
• To determine the synergistic effect of PMNL and VZV-specific antibodies in reducing VZV yield.
• To elucidate the mechanism of PMNL-mediated antiviral activity.

Main Methods:

• Co-incubation of VZV-infected human fibroblasts with PMNL and/or VZV-specific antibodies.
• Quantification of VZV yield via virus titration.
• Morphological analysis of PMNL-VZV-infected cell interactions using electron microscopy.

Main Results:

• PMNL significantly reduced VZV yield in infected fibroblasts.
• The addition of VZV-specific antibodies enhanced the antiviral effect of PMNL.
• VZV-specific antibodies alone also reduced VZV yield, but required higher concentrations.
• Electron microscopy revealed PMNL adherence, rosette formation, activation, and phagocytosis of VZV virions.

Conclusions:

• PMNL play a significant role in controlling VZV infection.
• A combination of PMNL and VZV-specific antibodies provides a potent antiviral effect.
• PMNL exert antiviral activity through direct interaction and phagocytosis of VZV virions.