HCV infection of the transplanted liver: Changing CD81 and HVR1 variants immediately after liver transplantation

Michael G. Hughes, Tae W. Chong, Robert L. Smith, Heather L. Evans, Julia C. Iezzoni, Robert G. Sawyer, Christine K. Rudy, Timothy L. Pruett

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

The second envelope protein at hypervariable region 1 (HVR1) has been implicated in contributing to hepatitis C virus (HCV)-host cell interactions and CD81 (a multifunctional protein) has been demonstrated to act as a cell surface receptor for HCV and may interact directly with HVR1. The purpose of the current study was to determine if certain HVR1 quasispecies variants more effectively associate with and infect allografts after liver transplantation than other HVR1 variants and whether CD81 receptor expression changes after transplantation. Blood and allograft samples were obtained from the peritransplant period in seven patients. Clones of RT-PCR product were directly sequenced to identify HVR1 quasispecies variants. Explanted liver and serial allograft biopsies in recipients with HCV were examined by immunohistochemistry (IHC) for CD81 expression. Examination of HVR1 sequences demonstrated that only a fraction of the quasispecies variants recovered from each patient's blood sampled immediately prior to transplantation associated with and infected the allografts. Genetic diversity at HVR1 decreased with reperfusion but did not significantly decrease with infection. Expression of CD81 varied during the immediate post-transplant period. In conclusion, HVR1 quasispecies variants differentially associate with, and infect allografts, after liver transplantation. Additionally, allografts express variable amounts of CD81 after transplantation.

Original languageEnglish (US)
Pages (from-to)2504-2513
Number of pages10
JournalAmerican Journal of Transplantation
Volume5
Issue number10
DOIs
StatePublished - Oct 1 2005

Keywords

  • Disease recurrence
  • HCV
  • Liver transplantation
  • Quasispecies

ASJC Scopus subject areas

  • Immunology and Allergy
  • Transplantation
  • Pharmacology (medical)

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    Hughes, M. G., Chong, T. W., Smith, R. L., Evans, H. L., Iezzoni, J. C., Sawyer, R. G., Rudy, C. K., & Pruett, T. L. (2005). HCV infection of the transplanted liver: Changing CD81 and HVR1 variants immediately after liver transplantation. American Journal of Transplantation, 5(10), 2504-2513. https://doi.org/10.1111/j.1600-6143.2005.01060.x