Double-stranded viral RNA persists in vitro and in vivo during prolonged infection of porcine reproductive and respiratory syndrome virus
- Kansas State Univ., Manhattan, KS (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- South Dakota State Univ., Brookings, SD (United States); Boehringer Ingelheim Asian Veterinary Research and Development Center, Shanghai (China)
- The Ohio State Univ., Wooster, OH (United States). Food Animal Health Research Program (FAHRP), OARDC
- Kansas State Univ., Manhattan, KS (United States); Iowa State Univ., Ames, IA (United States)
- Kansas State Univ., Manhattan, KS (United States); South Dakota State Univ., Brookings, SD (United States)
In order to study the mechanism of PRRSV persistence, an in vitro model of persistence was developed by serially passaging PRRSV-infected MARC-145 cells 109 times. Viral persistence was detected to be associated with increased double-stranded (dsRNA) in the infected cells. In PRRSV infected pigs, reduced ratio of plus to minus strands of viral RNA was observed in lymphoid tissues from PRRSV persistent pigs at 52 days post infection. Viral dsRNA was mostly detected in the germinal center during persistent infection compared to the localization of dsRNA in the inter-follicular zones during acute infection. RNA array analysis of antiviral cytokines in persistently infected lymph nodes showed that the presence of dsRNA did not stimulate antiviral immunity. These results suggest that PRRSV dsRNA functions as a mediator for viral persistence. The localization of PRRSV dsRNA in the germinal center of lymphoid tissues reveals a novel mechanism for PRRSV persistence.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDA; USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1779580
- Alternate ID(s):
- OSTI ID: 23094988
- Report Number(s):
- LLNL-JRNL--820790; 1032457
- Journal Information:
- Virology, Journal Name: Virology Vol. 524; ISSN 0042-6822
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Persistent Infection and Transmission of Senecavirus A from Carrier Sows to Contact Piglets
|
journal | August 2019 |
Similar Records
MOV10 inhibits replication of porcine reproductive and respiratory syndrome virus by retaining viral nucleocapsid protein in the cytoplasm of Marc-145 cells
Porcine reproductive and respiratory syndrome virus infection triggers HMGB1 release to promote inflammatory cytokine production
Vaccine Efficacy of a Replication-Competent Interferon-Expressing Porcine Reproductive and Respiratory Syndrome (PRRS) Virus Against NADC-34 Challenge
Journal Article
·
Sat Sep 15 00:00:00 EDT 2018
· Biochemical and Biophysical Research Communications
·
OSTI ID:23103544
Porcine reproductive and respiratory syndrome virus infection triggers HMGB1 release to promote inflammatory cytokine production
Journal Article
·
Fri Nov 14 23:00:00 EST 2014
· Virology
·
OSTI ID:22435062
Vaccine Efficacy of a Replication-Competent Interferon-Expressing Porcine Reproductive and Respiratory Syndrome (PRRS) Virus Against NADC-34 Challenge
Journal Article
·
Mon Apr 14 20:00:00 EDT 2025
· Vaccines
·
OSTI ID:2557540