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Epstein-Barr virus: exploiting the immune system.

D A Thorley-Lawson1

  • 1Department of Pathology, Tufts University School of Medicine, Boston, Massachusetts 02111, USA. david.thorley-lawson@tufts.edu

Nature Reviews. Immunology
|March 22, 2002
PubMed
Summary
This summary is machine-generated.

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Epstein-Barr virus (EBV) infects B cells, but persists in resting memory cells. Viral genes LMP1 and LMP2A enable EBV to hijack B-cell differentiation, explaining its persistence in memory cells.

Area of Science:

  • Virology
  • Immunology
  • Cell Biology

Background:

  • Epstein-Barr virus (EBV) infects B cells in vitro, causing proliferation.
  • In vivo, EBV establishes a persistent, quiescent infection in memory B cells.
  • The mechanism of EBV's specific targeting of memory B cells remains unclear.

Purpose of the Study:

  • To investigate how Epstein-Barr virus (EBV) achieves specific and persistent infection in resting memory B cells.
  • To explore the role of viral genes LMP1 and LMP2A in EBV's in vivo persistence.

Main Methods:

  • In vitro infection assays of B cells.
  • Analysis of B-cell differentiation pathways.
  • Investigation of viral gene expression (LMP1, LMP2A) in infected cells.

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Main Results:

  • EBV infection in vitro drives B cells to activate and proliferate.
  • EBV establishes a quiescent infection in circulating resting memory B cells in vivo.
  • Viral genes LMP1 and LMP2A are implicated in EBV's ability to exploit B-cell differentiation pathways.

Conclusions:

  • EBV utilizes its genes LMP1 and LMP2A to manipulate normal B-cell differentiation.
  • This manipulation allows EBV-infected lymphoblasts to transition into resting memory B cells.
  • This mechanism explains EBV's specific persistence within the memory B cell compartment in vivo.