Characterization and relative abundance of maxi-chloride channels in Epstein-Barr virus (EBV) producer: B95-8 cells
Journal
Experientia
Journal Volume
52
Journal Issue
8
Pages
818-826
Date Issued
1996
Author(s)
Abstract
Several Epstein-Barr virus (EBV)-transformed cell lines were used to investigate the pathogenesis of lymphoproliferative diseases and nasopharyngeal carcinoma. The studies focus on the events occurring inside the membrane. On only one occasion, the cell membrane of EBV-transformed B lymphocytes from a cystic fibrosis patient was found to express defective Cl channels (CFTR; Cystic Fibrosis Transmembrane conductance Regulator), as in the airway epithelial cell. No other type of channel in EBV-transformed cells has so far been investigated. In this study, the cell membrane of the B95-8 cell was examined by the patch-clamp technique and compared to the non-EBV-infected BJAB cell. The high conductance (~ 300 pS) maxi-chloride (Cl) channel activity was the most frequently observed event in inside-out configurations. Under similar experimental conditions, we have found a significantly higher probability of detecting maxi-Cl channel activity on the cell membrane of B95-8 cells (69%) than on BJAB cells (27%), or as previously reported on resting murine B lymphocytes (38%) or intact human T lymphocytes (37%). The relative abundance of the maxi-Cl channel on B95-8 cells may be linked to EBV infection and/or secretory ability.
Subjects
Anion channel; Epstein-Barr virus; Patch clamp
SDGs
Other Subjects
chloride channel; transmembrane conductance regulator; animal cell; article; B lymphocyte; cell line; cell membrane; controlled study; cystic fibrosis; Epstein Barr virus; lymphoproliferative disease; nasopharynx carcinoma; nonhuman; patch clamp; pathogenesis; probability; T lymphocyte; virogenesis; virus cell transformation
Publisher
Birkhauser Verlag AG
Type
journal article