title: Nitric oxide inhibits the replication cycle of severe acute respiratory syndrome coronavirus.
abstract: Nitric oxide (NO) is an important signaling molecule between cells which has been shown to have an inhibitory effect on some virus infections. The purpose of this study was to examine whether NO inhibits the replication cycle of the severe acute respiratory syndrome coronavirus (SARS CoV) in vitro. We found that an organic NO donor, S-nitroso-N-acetylpenicillamine, significantly inhibited the replication cycle of SARS CoV in a concentration-dependent manner. We also show here that NO inhibits viral protein and RNA synthesis. Furthermore, we demonstrate that NO generated by inducible nitric oxide synthase, an enzyme that produces NO, inhibits the SARS CoV replication cycle.
authors.affiliation: Center for Microbiological Preparedness, Swedish Institute for Infectious Disease Control, 171 82 Solna, Sweden.
authors.forename: Sara
authors.initials: S
authors.lastname: Akerström
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Mousavi-Jazi
authors.forename: Jonas
authors.initials: J
authors.lastname: Klingström
authors.forename: Mikael
authors.initials: M
authors.lastname: Leijon
authors.forename: Ake
authors.initials: A
authors.lastname: Lundkvist
authors.forename: Ali
authors.initials: A
authors.lastname: Mirazimi
mesh_terms: D000818:Animals; D002522:Chlorocebus aethiops; D006801:Humans; D009569:Nitric Oxide / Q000378:metabolism / Q000494:pharmacology*; D019001:Nitric Oxide Synthase / Q000378:metabolism; D052247:Nitric Oxide Synthase Type II; D026423:S-Nitroso-N-Acetylpenicillamine / Q000494:pharmacology*; D045473:Severe acute respiratory syndrome-related coronavirus / Q000187:drug effects* / Q000502:physiology; D014709:Vero Cells; D014779:Virus Replication / Q000187:drug effects*
chemical_list: D009569:Nitric Oxide; D026423:S-Nitroso-N-Acetylpenicillamine; C496319:NOS2 protein, human; D019001:Nitric Oxide Synthase; D052247:Nitric Oxide Synthase Type II