Abstract:
:Poliovirus induces bcl-2-independent apoptosis in the human U937 promonocytic cell line [28]. Here we describe that this cell death, induced after viral infection, correlates with the modulation of the protooncoprotein Bcl-xl. Furthermore, poliovirus infection decreases the detected Bcl-xl in a U937 clone that overexpresses this protein (U937bcl-xl). Although in U937bcl-xl cells, Bcl-xl was not as highly regulated as in parental U937 cells, correlation between Bcl-xl modulation and the cleavage of poly(ADP-ribose)polymerase could be observed. Nevertheless, the induction of shutoff after infection of transfected control U937neo or U937bcl-xl clones was not significantly altered. Finally, production of new viral particles was slightly restricted in Bcl-xl-overexpressing U937 cells. Taken together, these results suggest that Bcl-xl is modulated during the induction of apoptosis in the promonocytic cell line U937 after poliovirus infection, although modulation of this protooncogene was not sufficient to modify the course of infection.
journal_name
Arch Viroljournal_title
Archives of virologyauthors
Calandria C,López-Guerrero JAdoi
10.1007/s00705-002-0881-8keywords:
subject
Has Abstractpub_date
2002-12-01 00:00:00pages
2445-52issue
12eissn
0304-8608issn
1432-8798journal_volume
147pub_type
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