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Virus Res. 1998 Nov;58(1-2):107-13.

Vaccinia virus-induced apoptosis in immature B lymphocytes: role of cellular Bcl-2.

Author information

1
Centro Nacional de Biotecnología (CSIC), Universidad Autónoma, Cantoblanco, Madrid, Spain.

Abstract

Apoptosis is a form of physiological cell death which can be initiated in response to various stimuli including virus infections. We show that vaccinia virus (VV) infection induces apoptosis in an immature B lymphocyte line, WEHI-231. In these cells, several VV-specific proteins were synthesized during the infection, but neither virus production nor viral DNA synthesis were detected. The intracellular levels of the proto-oncogene Bcl-2, which effectively protects cells from programmed cell death, were found to be down-regulated by the VV infection, suggesting that this down-regulation might be involved in the viral induction of apoptosis in WEHI-231 cells. Stable transfectants overexpressing human Bcl-2 were shown to be resistant to the apoptosis produced by the infection, a finding consistent with the proposed role for the down-regulation of endogenous Bcl-2 in VV-induced apoptotic death.

PMID:
9879767
DOI:
10.1016/s0168-1702(98)00105-1
[Indexed for MEDLINE]

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