Affiliation:
1. Department of Immunology and Allergy, Chair of Pulmonology, Rheumatology and Clinical Immunology Medical University of Lodz Lodz Poland
2. Laboratory of Microscopic Imaging and Specialized Biological Techniques, Faculty of Biology and Environmental Protection University of Lodz Lodz Poland
Abstract
Human rhinovirus 16 (HRV16) may induce inflammatory and antiviral responses in the human lung vascular endothelium (ECs) and impair its barrier functions after infection. However, ECs may regain barrier and metabolic functions. Mechanisms of limitation of HRV16 infection in the lung vascular endothelium are unknown. Human lung vascular endothelium (HMVEC‐L) was infected with HRV16. IFN‐β, OAS‐1, and PKR expression was assessed by real‐time PCR, flow cytometry, and confocal microscope. To prove the significance of IFN‐β in the limitation of HRV16 replication, HMVEC‐Ls were preincubated with anti‐IFN‐β Abs. To prove the involvement of OAS‐1 and PKR in the IFN‐dependent limitation of HRV16 replication, HMVEC‐Ls were transfected with respective siRNA. HRV16 stimulated IFN‐β production and activated intracellular mechanisms of antiviral immunity based on OAS‐1 and PKR activation. Blocking of IFN‐β contributed to the inhibition of intracellular mechanisms of antiviral immunity (OAS‐1, PKR) and boosted replication of HRV16. Effective OAS‐1 silencing by siRNA caused the increase of HRV16 copy numbers after HRV16 infection. siRNA upregulated the other genes related to the antiviral response. The infected lung vascular endothelium may limit the HRV16 infection. This limitation may be associated with the induction of IFN‐β‐dependent intracellular mechanisms based on OAS‐1 and PKR activity.
Funder
National Science Foundation
Subject
Microbiology (medical),General Medicine,Immunology and Allergy,Pathology and Forensic Medicine