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Electrorotation studies of baby hamster kidney fibroblasts infected with herpes simplex virus type 1

Archer, S., Morgan, H., and Rixon, F.J. (1999) Electrorotation studies of baby hamster kidney fibroblasts infected with herpes simplex virus type 1. Biophysical Journal, 76 (5). pp. 2833-2842. ISSN 0006-3495 (doi:10.1016/S0006-3495(99)77437-0)

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Abstract

The dielectric properties of baby hamster kidney fibroblast (BHK(C-13)) cells have been measured using electrorotation before and after infection with herpes simplex virus type 1 (HSV-1). The dielectric properties and morphology of the cells were investigated as a function of time after infection. The mean specific capacitance of the uninfected cells was 2.0 μF/cm2, reducing to a value of 1.5 μF/cm2 at 12 h after infection. This change was interpreted as arising from changes in the cell membrane morphology coupled with alterations in the composition of the cell membrane as infection progressed. The measured changes in the cell capacitance were correlated with alterations in cellular morphology determined from scanning electron microscope (SEM) images. Between 9 and 12 h after infection the internal permittivity of the cell exhibited a rapid change, reducing in value from 75ϵo to 58ϵo, which can be correlated with the generation of large numbers of Golgi-derived membrane vesicles and enveloped viral capsids. The data are discussed in relation to the known life cycle of HSV-1 and indicate that electrorotation can be used to observe dynamic changes in both the dielectric and morphological properties of virus-infected cells. Calculations of the dielectrophoretic spectrum of uninfected and infected cells have been performed, and the results show that cells in the two states could be separated using appropriate frequencies and electrode arrays.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s):Rixon, Dr Frazer
Authors: Archer, S., Morgan, H., and Rixon, F.J.
College/School:College of Medical Veterinary and Life Sciences > Institute of Infection Immunity and Inflammation
Journal Name:Biophysical Journal
Journal Abbr.:Biophys J.
ISSN:0006-3495
ISSN (Online):1542-0086

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