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Modulation of Host Cell Signaling Pathways by Varicella-Zoster Virus.

Nandini Sen1, Ann M Arvin2

  • 1Departments of Pediatrics and Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA, 94305, USA. Nandinsen@gmail.com.

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|May 27, 2022
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Summary
This summary is machine-generated.

Varicella-zoster virus (VZV) manipulates host cell signaling, including the phosphoinositide 3-kinase (PI3K)/Akt pathway, to promote viral replication and disease. This involves a balance of pro- and anti-apoptotic factors, impacting VZV pathogenesis.

Keywords:
VZV PKRVZV signalingVZV-PI3K/Akt

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Area of Science:

  • Cellular biology
  • Virology
  • Immunology

Background:

  • Host-pathogen interactions rely on intricate cellular signaling networks that influence disease progression.
  • The phosphoinositide 3-kinase (PI3K)/Akt pathway is crucial for cell function and often dysregulated in diseases like cancer.
  • Phospho-Akt (pAkt) and phospho-STAT3 are frequently constitutively active in cancer cells.

Purpose of the Study:

  • To examine the regulation of the PI3K/Akt pathway in cells infected with Varicella-zoster virus (VZV).
  • To investigate the roles of other signaling pathways, such as p53, in VZV-infected cells.
  • To understand how these pathways influence apoptosis and viral replication.

Main Methods:

  • Analysis of signaling pathway activation in VZV-infected cells.
  • Comparison of PI3K/Akt and p53 pathway regulation during VZV infection.
  • Assessment of the balance between pro- and anti-apoptotic factors.

Main Results:

  • VZV infection modulates the PI3K/Akt pathway.
  • The p53 pathway, unlike pAkt and pSTAT3, promotes apoptosis in VZV-infected cells.
  • A delicate balance of apoptotic and anti-apoptotic signaling is established during VZV infection.

Conclusions:

  • The regulation of PI3K/Akt and p53 pathways is critical for VZV pathogenesis.
  • VZV likely exploits host cell signaling to create an environment conducive to viral replication.
  • Understanding these host-pathogen interactions is key to deciphering VZV disease mechanisms.