Science China Life Sciences

, Volume 55, Issue 8, pp 735–743 | Cite as

Effects of Epstein-Barr virus infection on the development of multiple myeloma after liver transplantation

  • YeWei Zhang
  • HeWei Zhao
  • Xia He
  • SuWen Zheng
  • TaiHong Wang
  • DongLiang Yan
  • JingFeng Sun
  • Xiang Lu
  • JianFei Wen
  • Wan Yee Lau
Open Access
Research Paper

Abstract

Reduced cellular immune function in patients after liver transplantation easily results in many types of viral infections, such as Epstein-Barr virus. Epstein-Barr virus is a Γ-herpesvirus and is related to many malignant diseases, especially epithelial and lymph tumors. The abnormal interaction of cluster of differentiation 40 with cluster of differentiation 40 ligand and expression of cluster of differentiation 40 ligand are considered closely related to the development of myeloma cells. This study explored the influence and mechanism of Epstein-Barr virus infection on the phenotype and biological behavior of myeloma cells after liver transplantation. Flow cytometry was used to detect coexpression of cluster of differentiation 40 and cluster of differentiation 40 ligand in 10 samples of freshly isolated multiple myeloma cells. Cluster of differentiation 40 and cluster of differentiation 40 ligand were coexpressed in sample Nos. 5, 8, 9, and 10, particularly in sample No. 5. Western blot analysis was used to detect the expression of the Epstein-Barr virus antigens latent membrane protein 1 and Epstein-Barr virus nuclear antigen 2 in the multiple myeloma cell line RPMI 8226 infected with Epstein-Barr virus. The antigen expression indicated that Epstein-Barr virus can infect multiple myeloma virus cells in vitro. Reverse transcription-polymerase chain reaction revealed upregulated expression of cluster of differentiation 40 ligand on the infected RPMI 8226 cells, which may be involved in the anti-apoptosis activity of the infected cells. Confocal microscopy showed that pairs of molecules of cluster of differentiation 40, cluster of differentiation 40 ligand, and latent membrane protein 1 were colocalized on the surface of the infected cells. CXC chemokine receptor 4 was upregulated on the RPMI 8226 cells after Epstein-Barr virus infection. The migratory ability of the infected cells improved in the presence of the chemokine stromal cell-derived factor-1α. Anti-apoptosis and migration are known important biological characteristics of malignant cells. Our results indicate the involvement of Epstein-Barr virus in the origin and development of multiple myeloma. The risk of multiple myeloma increases when Epstein-Barr virus infects B cells in the germinal center, which may result in an anti-apoptosis effect of B cells and an improved ability to migrate from the germinal center to peripheral blood.

Keywords

liver transplantation CD40 CD40L multiple myeloma EBV 

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Copyright information

© The Author(s) 2012

Authors and Affiliations

  • YeWei Zhang
    • 1
  • HeWei Zhao
    • 1
  • Xia He
    • 2
  • SuWen Zheng
    • 1
  • TaiHong Wang
    • 1
  • DongLiang Yan
    • 3
  • JingFeng Sun
    • 1
  • Xiang Lu
    • 4
  • JianFei Wen
    • 1
  • Wan Yee Lau
    • 5
  1. 1.Department of Hepatobiliary and Pancreatic SurgeryAffiliated Jiangsu Cancer Hospital of Nanjing Medical UniversityNanjingChina
  2. 2.Department of RadiotherapyAffiliated Jiangsu Cancer Hospital of Nanjing Medical UniversityNanjingChina
  3. 3.Department of General surgeryThe Second Affiliated Hospital of Nantong UniversityNantongChina
  4. 4.Departimen of GeriatricsThe Second Affiliated Hospital of Nanjing Medical UniversityNanjingChina
  5. 5.Faculty of MedicineThe Chinese University of Hong Kong, Prince of Wales HospitalShatin, Hong KongChina

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