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Nitric oxide and peroxynitrite have different antiviral effects against hantavirus replication and free mature virions.

Abstract：

:Reactive nitrogen intermediates (RNI), like nitric oxide (NO) and peroxynitrite, have antiviral effects against certain viruses. Hantaviruses, like other members of the Bunyaviridae family, have previously not been shown to be sensitive to RNI. In this study, we compared the effects of NO and peroxynitrite on hantavirus replication and free mature virions in vitro, and of inducible nitric oxide synthase (iNOS) in hantavirus-infected suckling mice. The NO-generating compound S-nitroso-N-acetylpenicillamine (SNAP), as well as cytokine-induced NO, strongly inhibited hantavirus replication in Vero E6 cells, while pretreatment of free virions with SNAP only had a limited effect on their viability. In contrast, 3-morpholinosydnonimine hydrochloride (SIN-1), a peroxynitrite donor, inhibited virus replication only to a very low extent in vitro, but pretreatment of virus with SIN-1 led to a considerably lowered viability of the virions. Infections of various human cell types per se did not induce NO production. The viral titers in iNOS(-/-) mice were higher compared to the controls, suggesting that NO inhibits hantavirus replication in vivo. In conclusion, we show that NO has strong antiviral effects on hantavirus replication, and peryoxynitrite on mature free virions, suggesting that different RNI can have different effects on various parts of the replication cycle for the same virus.

journal_name

Eur J Immunol

journal_title

European journal of immunology

authors

Klingström J,Akerström S,Hardestam J,Stoltz M,Simon M,Falk KI,Mirazimi A,Rottenberg M,Lundkvist A

doi

10.1002/eji.200535587

subject

Has Abstract

pub_date

2006-10-01 00:00:00

pages

2649-57

issue

10

eissn

0014-2980

issn

1521-4141

journal_volume

36

pub_type

杂志文章

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