AI Article Synopsis
Article Abstract
Baicalin, a flavonoid compound extracted from the dry root of Georgi, has been shown to have anti-inflammation, anti-viral, anti-bacterial, and immunomodulatory activity. However, the effect of baicalin against avian infectious bronchitis virus (IBV) remains unknown. The purpose of this study was to investigate the anti-IBV activity and underlying mechanism of baicalin . The results showed that baicalin has a direct virucidal effect but no prophylactic effect on IBV infection. The mRNA and protein of IBV N were decreased significantly when IBV-infected cells were treated with baicalin during the multiple stages of the virus replication cycle, including viral adsorption, invasion, internalization, and release. Stress granule (SG) formation resulted from the increase of G3BP1 and the phosphorylation of the PKR/eIF2α due to the treatment of IBV-infected cells with baicalin. The inhibitory activity of baicalin on IBV replication was increased when G3BP1 expression was inhibited, and the down-regulation of G3BP1 expression occurred when the expression of PKR and eIF2α was inhibited. These findings revealed that baicalin activates phosphorylation of the PKR/eIF2α pathway and induces SG formation by targeting G3BP1, initiating the antiviral response to suppress IBV replication in Vero cells. The results suggest that baicalin is a promising candidate drug to treat or prevent IBV infection. Baicalin inhibits IBV replication by reducing IBV N protein and mRNA.Baicalin disturbs multiple stages of the IBV life cycle.Baicalin activates PKR/eIF2α pathway and induces stress granule formation to exert anti-IBV response.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1080/03079457.2022.2109453 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Development of a recombinant infectious bronchitis virus vaccine expressing infectious laryngotracheitis virus multiple epitopes.
Poult Sci
November 2024
State Key Laboratory of Swine and Poultry Breeding Industry & Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; Zhongshan Innovation Center of South China Agricultural University, Zhongshan 528400, PR China. Electronic address:
Infectious laryngotracheitis (ILT) is a highly contagious disease, usually controlled by vaccination with live attenuated vaccines. However, the latent infection and adverse reactions caused by the live attenuated vaccines against infectious laryngotracheitis virus (ILTV) have limited its use in poultry. Infectious bronchitis virus (IBV) is considered a potential vector for vaccine development, but the issue of poor stability in recombinant IBV expressing foreign genes has not yet been resolved.
View Article and Find Full Text PDFThe battle between infectious bronchitis virus and innate immunity: A mini review.
Virology
November 2024
College of Animal Science and Technology, Beijing University of Agricultural, Beijing, 102206, China. Electronic address:
Infectious bronchitis virus (IBV) is the causative agent of infectious bronchitis (IB), leading to acute or persistent infections in poultry. IBV triggers innate immune response, and the production of interferon (IFN) varies depending on the viral strains and host cell types. To evade the host immune system, IBV has developed numerous immune escape strategies.
View Article and Find Full Text PDFCoronavirus nucleocapsid protein enhances the binding of p-PKCα to RACK1: Implications for inhibition of nucleocytoplasmic trafficking and suppression of the innate immune response.
PLoS Pathog
November 2024
Department of Avian Infectious Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, P. R. China.
The hallmark of coronavirus infection lies in its ability to evade host immune defenses, a process intricately linked to the nuclear entry of transcription factors crucial for initiating the expression of antiviral genes. Central to this evasion strategy is the manipulation of the nucleocytoplasmic trafficking system, which serves as an effective target for the virus to modulate the expression of immune response-related genes. In this investigation, we discovered that infection with the infectious bronchitis virus (IBV) dynamically impedes the nuclear translocation of several transcription factors such as IRF3, STAT1, STAT2, NF-κB p65, and the p38 MAPK, leading to compromised transcriptional induction of key antiviral genes such as IFNβ, IFITM3, and IL-8.
View Article and Find Full Text PDFInteraction Network Characterization of Infectious Bronchitis Virus Nsp2 with Host Proteins.
Vet Sci
October 2024
Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China.
Infectious bronchitis (IB) is a highly contagious acute viral disease that leads to substantial economic losses in the poultry industry. Previous research conducted in our laboratory has indicated that Nsp2 may serve as a key virulence factor within the IBV genome, as evidenced by its pronounced divergence between the field strain and its attenuated counterpart. Understanding the interaction between Nsp2 and host proteins is crucial to elucidating the role of the Nsp2 protein in the pathogenesis and proliferation of IBV.
View Article and Find Full Text PDFReplication and adaptation of avian infectious bronchitis viruses in pheasants (Phasianus colchicus).
Virus Res
December 2024
Division of Avian Infectious Diseases, the State Key Laboratory of Animal Disease Prevention and Control, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin 150069, China. Electronic address:
Infectious bronchitis virus (IBV) does not only cause disease in millions of chickens worldwide, but IBV-like viruses have also been detected or isolated from other domestic birds. We propose that the pheasant coronavirus (PhCoV) originates from IBV. Indeed, the IBV strains H120 and M41 can replicate but do not cause disease in pheasants.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!