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Park GB, Kim D, Park SJ, Lee HK, Kim JH, Kim YS, Park SG, Choi IH, Yoon SH, Lee YJ, Paeng S, Hur DY. 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 2015; 36:1464-78. [PMID: 26498453 PMCID: PMC4678167 DOI: 10.3892/ijmm.2015.2372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 09/23/2015] [Indexed: 02/06/2023] Open
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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Affiliation(s)
- Ga Bin Park
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - Daejin Kim
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - Sung Jae Park
- Department of Internal Medicine, Inje University Busan Paik Hospital, Busan 614-735, Republic of Korea
| | - Hyun-Kyung Lee
- Department of Internal Medicine, Inje University Busan Paik Hospital, Busan 614-735, Republic of Korea
| | - Ji Hyun Kim
- Department of Internal Medicine, Inje University Busan Paik Hospital, Busan 614-735, Republic of Korea
| | - Yeong Seok Kim
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - Sae-Gwang Park
- Department of Microbiology, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - In-Hak Choi
- Department of Microbiology, Inje University College of Medicine, Busan 614-735, Republic of Korea
| | - Sung Ho Yoon
- Department of Plastic Surgery, Inje University Haeundae Paik Hospital, Busan 614-735, Republic of Korea
| | - Youn Jae Lee
- Department of Internal Medicine, Inje University Busan Paik Hospital, Busan 614-735, Republic of Korea
| | - Sunghwa Paeng
- Department of Neurosurgery, Inje University Busan Paik Hospital, Busan 614-735, Republic of Korea
| | - Dae Young Hur
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Busan 614-735, Republic of Korea
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Roque-Cuéllar MC, Sánchez B, García-Lozano JR, Garrido-Serrano A, Sayago M, Praena-Fernández JM, Núñez-Roldán A, Aguilar-Reina J. Expression of CD81, SR-BI and LDLR in lymphocytes and monocytes from patients with classic and occult hepatitis C virus infection. J Med Virol 2012; 84:1727-36. [DOI: 10.1002/jmv.23345] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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