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. 1997 Oct;71(10):8014–8018. doi: 10.1128/jvi.71.10.8014-8018.1997

The major antigenic protein of infectious bursal disease virus, VP2, is an apoptotic inducer.

A Fernández-Arias 1, S Martínez 1, J F Rodríguez 1
PMCID: PMC192164  PMID: 9311897

Abstract

Infectious bursal disease virus (IBDV) is the causative agent of an economically important poultry disease. Vaccinia virus recombinants expressing the IBDV mature structural capsid proteins VP2 and VP3 were generated by using vectors for inducible gene expression. Characterization of these recombinant viruses demonstrated that expression of VP2 leads to induction of apoptosis in a variety of mammalian cell lines. Transfection of cell cultures with a expression vector containing the VP2 coding region under the control of the immediate-early promoter-enhancer region of human cytomegalovirus also triggers programmed cell death. The apoptotic effect of VP2 is efficiently counteracted by coexpression of the proto-oncogene bcl-2. The results presented demonstrate that VP2 is a bona fide apoptotic inducer. Evaluation of the significance of this finding for the virus life cycle must await further research.

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Selected References

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