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KLF4 downregulates FGF21 to activate inflammatory injury and oxidative stress of LPS-induced ATDC5 cells via SIRT1/NF-κB/p53 signaling

Ankylosing spondylitis (AS) is a chronic inflammatory disease. Transcriptional regulation of fibroblast growth factor 21 (FGF21) by the transcription factor Krüppel-like factor 4 (KLF4) serves an important role in chronic inflammatory disease. However, to the best of our knowledge, the role of both...

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Autores principales: Chen, Xi, Wen, Jia, Liu, Chaoqi, Guo, Donggeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: D.A. Spandidos 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8941512/
https://www.ncbi.nlm.nih.gov/pubmed/35293599
http://dx.doi.org/10.3892/mmr.2022.12680
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author Chen, Xi
Wen, Jia
Liu, Chaoqi
Guo, Donggeng
author_facet Chen, Xi
Wen, Jia
Liu, Chaoqi
Guo, Donggeng
author_sort Chen, Xi
collection PubMed
description Ankylosing spondylitis (AS) is a chronic inflammatory disease. Transcriptional regulation of fibroblast growth factor 21 (FGF21) by the transcription factor Krüppel-like factor 4 (KLF4) serves an important role in chronic inflammatory disease. However, to the best of our knowledge, the role of both these factors in AS has not been previously reported. In the present study, ATDC5 cells were induced by lipopolysaccharide (LPS) to establish an AS inflammatory injury model. The expression levels of FGF21 and KLF4 were detected using reverse transcription-quantitative PCR and western blotting. Cell transfection was performed to alter the expression levels of KLF4 and FGF21. Subsequently, the regulatory effects and mechanisms underlying KLF4 and FGF21 on oxidative stress and inflammation in AS were investigated by performing Cell Counting Kit-8 assays, ELISAs, TUNEL staining and western blotting. Moreover, the expression levels of sirtuin 1 (SIRT1)/NF-κB/p53 pathway-related proteins were detected via western blotting. FGF21 overexpression promoted LPS-induced viability on ATDC5 cells, inhibited LPS-induced apoptosis, and decreased the LPS-induced inflammatory response and oxidative stress levels of ATDC5 cells. Overexpression of the transcription factor KLF4 reversed the protective effect of FGF21 overexpression on LPS-induced inflammatory injury in ATDC5 cells. The results suggested that this process may be achieved via regulating the SIRT1/NF-κB/p53 signaling pathway. Overall, the present study demonstrated that KLF4 downregulates FGF21 to activate inflammatory injury and oxidative stress of LPS-induced ATDC5 cells via SIRT1/NF-κB/p53 signaling.
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spelling pubmed-89415122022-03-28 KLF4 downregulates FGF21 to activate inflammatory injury and oxidative stress of LPS-induced ATDC5 cells via SIRT1/NF-κB/p53 signaling Chen, Xi Wen, Jia Liu, Chaoqi Guo, Donggeng Mol Med Rep Articles Ankylosing spondylitis (AS) is a chronic inflammatory disease. Transcriptional regulation of fibroblast growth factor 21 (FGF21) by the transcription factor Krüppel-like factor 4 (KLF4) serves an important role in chronic inflammatory disease. However, to the best of our knowledge, the role of both these factors in AS has not been previously reported. In the present study, ATDC5 cells were induced by lipopolysaccharide (LPS) to establish an AS inflammatory injury model. The expression levels of FGF21 and KLF4 were detected using reverse transcription-quantitative PCR and western blotting. Cell transfection was performed to alter the expression levels of KLF4 and FGF21. Subsequently, the regulatory effects and mechanisms underlying KLF4 and FGF21 on oxidative stress and inflammation in AS were investigated by performing Cell Counting Kit-8 assays, ELISAs, TUNEL staining and western blotting. Moreover, the expression levels of sirtuin 1 (SIRT1)/NF-κB/p53 pathway-related proteins were detected via western blotting. FGF21 overexpression promoted LPS-induced viability on ATDC5 cells, inhibited LPS-induced apoptosis, and decreased the LPS-induced inflammatory response and oxidative stress levels of ATDC5 cells. Overexpression of the transcription factor KLF4 reversed the protective effect of FGF21 overexpression on LPS-induced inflammatory injury in ATDC5 cells. The results suggested that this process may be achieved via regulating the SIRT1/NF-κB/p53 signaling pathway. Overall, the present study demonstrated that KLF4 downregulates FGF21 to activate inflammatory injury and oxidative stress of LPS-induced ATDC5 cells via SIRT1/NF-κB/p53 signaling. D.A. Spandidos 2022-05 2022-03-14 /pmc/articles/PMC8941512/ /pubmed/35293599 http://dx.doi.org/10.3892/mmr.2022.12680 Text en Copyright: © Chen et al. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License (https://creativecommons.org/licenses/by-nc-nd/4.0/) , which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
spellingShingle Articles
Chen, Xi
Wen, Jia
Liu, Chaoqi
Guo, Donggeng
KLF4 downregulates FGF21 to activate inflammatory injury and oxidative stress of LPS-induced ATDC5 cells via SIRT1/NF-κB/p53 signaling
title KLF4 downregulates FGF21 to activate inflammatory injury and oxidative stress of LPS-induced ATDC5 cells via SIRT1/NF-κB/p53 signaling
title_full KLF4 downregulates FGF21 to activate inflammatory injury and oxidative stress of LPS-induced ATDC5 cells via SIRT1/NF-κB/p53 signaling
title_fullStr KLF4 downregulates FGF21 to activate inflammatory injury and oxidative stress of LPS-induced ATDC5 cells via SIRT1/NF-κB/p53 signaling
title_full_unstemmed KLF4 downregulates FGF21 to activate inflammatory injury and oxidative stress of LPS-induced ATDC5 cells via SIRT1/NF-κB/p53 signaling
title_short KLF4 downregulates FGF21 to activate inflammatory injury and oxidative stress of LPS-induced ATDC5 cells via SIRT1/NF-κB/p53 signaling
title_sort klf4 downregulates fgf21 to activate inflammatory injury and oxidative stress of lps-induced atdc5 cells via sirt1/nf-κb/p53 signaling
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8941512/
https://www.ncbi.nlm.nih.gov/pubmed/35293599
http://dx.doi.org/10.3892/mmr.2022.12680
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