Retraction notice to “The rapid and sustained responses of dendritic cells to influenza virus infection in a non-human primate model” [Braz. J. Infect. Dis. 18 (2014) 406–413]

Zhang, Jie; Sun, Wei; Wang, Shan-Ze; Koster, Frederick; Li, Bilan; Harrod, Kevin S.

doi:10.1016/j.bjid.2015.09.002

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For different invaders, DCs can determine the immune bias via different strategy such as cytokines (immune tolerance or immune response), and mobilize other immune‐related cells to participate in a broader immune response (Chang et al., 2014). Several studies found that H5N1 subtype AIVs have a strong ability to recruit DCs, indicating that DCs play an important role in the formation of “cytokine storm” (Aldridge et al., 2009; Jie et al., 2015; Soloff et al., 2014).…”

Section: Discussionmentioning

confidence: 99%

H5N1 avian influenza virus without 80–84 amino acid deletion at the NS1 protein hijacks the innate immune system of dendritic cells for an enhanced mammalian pathogenicity

Chen

Miao

Huangfu

et al. 2020

Transbound Emerg Dis

View full text Add to dashboard Cite

NS gene is generally considered to be related to the virulence of highly pathogenic avian influenza virus (AIV). In recent years, the strains with five amino acids added to the 80-84 positions of the NS1 protein have become prevalent in H5N1 subtype AIVs isolated from mammals. However, the pathogenicity and mechanism of this pattern in mammals remain unclear. In this study, H5N1 subtype AIVs without 80-84 amino acids of the NS1 protein (rNS Δ5aa ) and a mutant virus (rNS 5aa-R ) with no deletion of 80-84 amino acids of the NS1 protein were used to determine the pathogenicity in mice. Our results showed that rNS 5aa-R possessed an enhanced pathogenicity compared with rNS Δ5aa in vivo and in vitro, which was accompanied by high expression of IL-6, MX1 and CXCL10 in murine lungs. Furthermore, we found that rNS 5aa-R increased the infection ability to dendritic cells (DCs). Besides, rNS 5aa-R enhanced the expression of phenotypic markers (CD80, CD86, CD40 and MHCII), activation marker CD69, inflammatory cytokines (IL-6, TNF-α and IL-10) and antagonized interferon (IFN-α) of DCs, in comparison to rNS Δ5aa . Moreover, rNS 5aa-R induced DCs to quickly migrate into nearby cervical lymph nodes by highly upregulating CCR7, and CD86 showed a high expression on the migrated DCs. We also found that rNS 5aa-Rinfected DCs significantly promoted the allogeneic CD4 + T-cell proliferation. These findings suggested that rNS 5aa-R strongly induced the innate immune response compared with the rNS Δ5aa , which is conducive to activate a wide immune response, resulting in a strong cytokine storm and causing an enhanced pathogenicity of H5N1 subtype AIVs in mammals.

show abstract