Virus-lymphocyte interactions: inductive signals necessary to render B lymphocytes susceptible to vesicular stomatitis virus infection
Graduate School of Biomedical Sciences; Department of Molecular Genetics and Microbiology
Medical Subject Headings
Animals; B-Lymphocytes; Lymphocyte Activation; Lymphokines; Mice; Spleen; Vesicular stomatitis Indiana virus; Viral Proteins; Virus Diseases; Virus Replication
Life Sciences | Medicine and Health Sciences
We examined the inductive signals necessary to render B lymphocytes capable of supporting a productive vesicular stomatitis virus infection. Small murine splenic B cells in the G0 phase of the cell cycle were cultured with stimulators which allow progression through various stages in the activation and/or differentiation pathway leading to antibody secretion. We found that vesicular stomatitis virus expression is dependent on the state of B-cell activation and that three distinct phases can be defined. A nonsupportive state, which is defined by the failure to produce infection centers, viral proteins, or PFUs, is characteristic of freshly isolated small B cells, B cells cultured 48 h without further stimulation, or B cells in the G1 phase of the cell cycle induced by culture with T-cell-derived lymphokines. This refractory state was not due to a failure of virus uptake. Activation of G0 B cells with anti-immunoglobulin at doses which allow entry into the S phase rendered them capable of synthesizing viral proteins and increased the number of B cells producing infection centers, without enhancing PFU production on a per cell basis. In contrast, B cells stimulated with multiple inductive signals provided by anti-immunoglobulin and lymphokines showed increased infectious particle production (7 PFU per infection center). Lipopolysaccharide stimulation, acting through another induction pathway, caused the maximum increase in the number of infected B cells and production of infectious particles (25 PFU per infection center).
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Citation: J Virol. 1990 Jul;64(7):3289-96.
Journal of virology
Schmidt, Madelyn R. and Woodland, Robert T., "Virus-lymphocyte interactions: inductive signals necessary to render B lymphocytes susceptible to vesicular stomatitis virus infection" (1990). GSBS Student Publications. 1079.