Recombinant glycoprotein E produced in mammalian cells in large-scale as an antigen for varicella-zoster-virus serology.
Artikel i vetenskaplig tidskrift, 2011

A recombinant glycoprotein E (gE) from varicella-zoster virus (VZV) was generated and produced in Chinese Hamster Ovary (CHO) cells, in the development of a specific antigen for analysis of IgG antibodies to VZV. Several stable gE-secreting clones were established and one clone was adapted to growth in serum-free suspension culture. When the cells were cultured in a perfusion bioreactor, gE was secreted into the medium, from where it could be easily purified. The recombinant gE was then evaluated as a serological antigen in ELISA. When compared to a conventional whole virus antigen, the VZV gE showed similar results in ELISA-based seroprevalence studies of 854 samples derived from blood donors, students, ischemic stroke patients and their controls, including samples with border-line results in previous analyses. Eight samples (0.9%) were discordant, all being IgG-negative by the VZV gE ELISA and positive by the whole virus ELISA. The sensitivity and specificity of the VZV gE ELISA were 99.9% and 100%, respectively, compared to 100% and 88.9% for the VZV whole virus ELISA. The elderly subjects showed similar reactivities to both antigens, while VZV gE gave lower signals in the younger cohorts, suggesting that antibodies to gE may increase with age. It was concluded that the recombinant VZV gE from CHO cells was suitable as a serological antigen for the detection of IgG antibodies specific for VZV.

Författare

Elisabeth Thomsson

Göteborgs universitet

Linn Persson

Göteborgs universitet

Anna Grahn

Göteborgs universitet

Johanna Snäll

Göteborgs universitet

Maria Ekblad

Göteborgs universitet

Eva Brunhage

Göteborgs universitet

Frida Svensson

Göteborgs universitet

Christina Jern

Göteborgs universitet

Gunnar C. Hansson

Göteborgs universitet

Malin Bäckström

Göteborgs universitet

Tomas Bergström

Göteborgs universitet

Journal of virological methods

1879-0984 (ISSN)

Vol. 175 53-9

Ämneskategorier

Medicinsk bioteknologi (med inriktning mot cellbiologi (inklusive stamcellsbiologi), molekylärbiologi, mikrobiologi, biokemi eller biofarmaci)

DOI

10.1016/j.jviromet.2011.04.014

PubMed

21540058