NDLI: Suppression of epstein-barr virus reactivation in lymphoblastoid cells cultured in simulated microgravity

Content Provider	Springer Nature Link
Author	Long, James P. Pierson, Sandrine Hughes, John H.
Copyright Year	1999
Abstract	Rotating-wall vessels allow for the growth of cells in simulated microgravity. Lymphoblastoid cells cultured in rotating-wall vessels exhibited significant differences in the expression of both early and late Epstein-Barr Virus (EBV) antigens. Viral protein expression (as measured by indirect immunofluorescence) was significantly suppressed in cells cultured in simulated microgravity. A significantly greater percentage of P3HR-1 cells and Daudi cells were positive for the expression of BamH1-Z-DNA fragment of Epstein-Barr replication activator (ZEBRA), early antigen restricted (EA-R), and viral capsid antigen (VCA) in cells cultured in static tissue culture flasks as compared to cells cultured in rotating-wall vessels. We observed a 7, 11, and 25-fold reduction, respectively, for EA-R, VCA, and ZEBRA protein in P3HR-1 cells cultured in simulated microgravity. Additionally, suspension cultures of P3HR-1 cells exhibited significantly greater ZEBRA antigen expression than cells cultured in rotating-wall vessels. As an independent confirmation of the reduction in ZEBRA-protein production in simulated microgravity in P3HR-1 cells, ZEBRA-mRNA was quantitated by reverse transcription polymerase chain reaction. We observed between a 4 to 10-fold reduction in ZEBRA-mRNA in cells cultured in simulated microgravity as compared to cells cultured at 1 ×g in tissue culture flasks. Rotating-wall vessels, by virtue of providing a simple culture environment triggering marked differences in viral activation, provide a model whereby both host and viral factors involved in regulating the maintenance of EBV latency can be examined.
Starting Page	49
Ending Page	54
Page Count	6
File Format	PDF
ISSN	10712690
Journal	In Vitro Cellular & Developmental Biology - Animal
Volume Number	35
Issue Number	1
e-ISSN	1543706X
Language	English
Publisher	Springer-Verlag
Publisher Date	1999-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	virology NASA latency cell biology rotating-wall vessel Cell Biology Developmental Biology Animal Genetics and Genomics Animal Biochemistry Animal Physiology
Content Type	Text
Resource Type	Article
Subject	Cell Biology Developmental Biology Medicine

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