Open Access

Pre-stimulation of CD81 expression by resting B cells increases proliferation following EBV infection, but the overexpression of CD81 induces the apoptosis of EBV-transformed B cells

  • Authors:
    • Ga Bin Park
    • Daejin Kim
    • Sung Jae Park
    • Hyun-Kyung Lee
    • Ji Hyun Kim
    • Yeong Seok Kim
    • Sae-Gwang Park
    • In-Hak Choi
    • Sung Ho Yoon
    • Youn Jae Lee
    • Sunghwa Paeng
    • Dae Young Hur
  • View Affiliations

  • Published online on: October 13, 2015     https://doi.org/10.3892/ijmm.2015.2372
  • Pages: 1464-1478
  • Copyright: © Park et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Hepatitis C virus (HCV) E2 protein binds to CD81, which is a component of the B cell co-stimulatory complex. The E2-CD81 interaction leads to B cell proliferation, protein tyrosine phosphorylation and to the hypermutation of immunoglobulin genes. Epidemiological studies have reported a high prevalence of B cell non-Hodgkin lymphoma (NHL) in HCV-positive patients, suggesting a potential association between HCV and Epstein-Barr virus (EBV) in the genesis of B lymphocyte proliferative disorders. In the present study, in order to investigate the association between EBV and HCV in B cells, we created an in vitro EBV-induced B cell transformation model. CD81 was gradually overexpressed during transformation by EBV. B cells isolated from HCV-positive patients grew more rapidly and clumped together earlier than B cells isolated from healthy donors following EBV infection. Pre-stimulation of CD81 expressed by resting B cells with anti-CD81 monoclonal antibody (mAb) or HCV E2 accelerated the generation of lymphoblastoid cell lines (LCLs) by EBV infection. These cells proliferated prominently through the early expression of interleukin-10 and intracellular latent membrane protein (LMP)-l. By contrast, the overexpression of CD81 on EBV-transformed B cells by anti-CD81 mAb or HCV E2 protein induced apoptosis through reactive oxygen species (ROS)-mediated mitochondrial dysfunction. These results suggest that the engagement of CD81 expressed by B cells has differential effects on B cell fate (proliferation or apoptosis) according to EBV infection and the expression level of CD81.
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December-2015
Volume 36 Issue 6

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Park GB, Kim D, Park SJ, Lee H, Kim JH, Kim YS, Park S, Choi I, Yoon SH, Lee YJ, Lee YJ, et al: Pre-stimulation of CD81 expression by resting B cells increases proliferation following EBV infection, but the overexpression of CD81 induces the apoptosis of EBV-transformed B cells. Int J Mol Med 36: 1464-1478, 2015.
APA
Park, G.B., Kim, D., Park, S.J., Lee, H., Kim, J.H., Kim, Y.S. ... Hur, D.Y. (2015). Pre-stimulation of CD81 expression by resting B cells increases proliferation following EBV infection, but the overexpression of CD81 induces the apoptosis of EBV-transformed B cells. International Journal of Molecular Medicine, 36, 1464-1478. https://doi.org/10.3892/ijmm.2015.2372
MLA
Park, G. B., Kim, D., Park, S. J., Lee, H., Kim, J. H., Kim, Y. S., Park, S., Choi, I., Yoon, S. H., Lee, Y. J., Paeng, S., Hur, D. Y."Pre-stimulation of CD81 expression by resting B cells increases proliferation following EBV infection, but the overexpression of CD81 induces the apoptosis of EBV-transformed B cells". International Journal of Molecular Medicine 36.6 (2015): 1464-1478.
Chicago
Park, G. B., Kim, D., Park, S. J., Lee, H., Kim, J. H., Kim, Y. S., Park, S., Choi, I., Yoon, S. H., Lee, Y. J., Paeng, S., Hur, D. Y."Pre-stimulation of CD81 expression by resting B cells increases proliferation following EBV infection, but the overexpression of CD81 induces the apoptosis of EBV-transformed B cells". International Journal of Molecular Medicine 36, no. 6 (2015): 1464-1478. https://doi.org/10.3892/ijmm.2015.2372