Transcriptional Regulation of RIP2 Gene by NFIB Is Associated with Cellular Immune and Inflammatory Response to APEC Infection

dc.contributor.author Sun, Hongyan
dc.contributor.author Li, Naying
dc.contributor.author Tan, Jishuang
dc.contributor.author Li, Huan
dc.contributor.author Zhang, Jibin
dc.contributor.author Qu, Lujiang
dc.contributor.author Lamont, Susan
dc.contributor.department Animal Science
dc.date.accessioned 2022-04-06T17:37:35Z
dc.date.available 2022-04-06T17:37:35Z
dc.date.issued 2022-03-30
dc.description.abstract Avian pathogenic E. coli (APEC) can cause localized or systemic infection, resulting in large economic losses per year, and impact health of humans. Previous studies showed that RIP2 (receptor interacting serine/threonine kinase 2) and its signaling pathway played an important role in immune response against APEC infection. In this study, chicken HD11 cells were used as an in vitro model to investigate the function of chicken RIP2 and the transcription factor binding to the RIP2 core promoter region via gene overexpression, RNA interference, RT-qPCR, Western blotting, dual luciferase reporter assay, CHIP-PCR, CCK-8, and flow cytometry assay following APEC stimulation. Results showed that APEC stimulation promoted RIP2 expression and cells apoptosis, and inhibited cells viability. Knockdown of RIP2 significantly improved cell viability and suppressed the apoptosis of APEC-stimulated cells. Transcription factor NFIB (Nuclear factor I B) and GATA1 (globin transcription factor 1) binding site was identified in the core promoter region of RIP2 from −2300 bp to −1839 bp. However, only NFIB was confirmed to be bound to the core promoter of RIP2. Overexpression of NFIB exacerbated cell injuries with significant reduction in cell viability and increased cell apoptosis and inflammatory cytokines levels, whereas opposite results were observed in NFIB inhibition treatment group. Moreover, RIP2 was up-regulated by NFIB overexpression, and RIP2 silence mitigated the effect of NFIB overexpression in cell apoptosis, inflammation, and activation of NFκB signaling pathways. This study demonstrated that NFIB overexpression accelerated APEC-induced apoptosis and inflammation via up-regulation of RIP2 mediated downstream pathways in chicken HD11 cells.
dc.description.comments This article is published as Sun, H.; Li, N.; Tan, J.; Li, H.; Zhang, J.; Qu, L.; Lamont, S.J. Transcriptional Regulation of RIP2 Gene by NFIB Is Associated with Cellular Immune and Inflammatory Response to APEC Infection. Int. J. Mol. Sci. 2022, 23, 3814. https://doi.org/10.3390/ijms23073814. Posted with permission. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/NveoJR8z
dc.language.iso en
dc.publisher © 2022 by the authors
dc.source.uri https://doi.org/10.3390/ijms23073814 *
dc.subject.keywords APEC
dc.subject.keywords RIP2
dc.subject.keywords NFIB
dc.subject.keywords gene expression
dc.subject.keywords apoptosis
dc.subject.keywords immune response
dc.title Transcriptional Regulation of RIP2 Gene by NFIB Is Associated with Cellular Immune and Inflammatory Response to APEC Infection
dc.type Article
dspace.entity.type Publication
relation.isAuthorOfPublication 5dee3d24-aa7a-4fe1-abf6-f0bb615bfe24
relation.isOrgUnitOfPublication 85ecce08-311a-441b-9c4d-ee2a3569506f
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