NDLI: ZFP36 promotes VDR mRNA degradation to facilitate cell death in oral and colonic epithelial cells

Content Provider	Springer Nature : BioMed Central
Author	Wang, Xiangyu Ge, Xuejun Liao, Wang Cao, Yong Li, Ran Zhang, Fang Zhao, Bin Du, Jie
Abstract	Background Vitamin D receptor (VDR) plays a vital protective role in oral and colonic epithelial cells. Albeit we know that VDR expression is reduced in the mucosal epithelial layers of autoimmune diseases, the mechanism by which VDR is decreased remains elusive. Methods VDR and zinc finger protein 36 (ZFP36) levels in human samples and cell lines were detected by real-time PCR, western blot and immunostaining. Luciferase report assay was used to test cis-elements in VDR gene promoter, real-time PCR was applied to measure mRNA decay and western blot was performed to evaluate protein degradation. RNA affinity chromatography assay was used to test protein-mRNA interaction. Co-immunoprecipitation was used to detect protein–protein interaction. The role of ZFP36 in AU-rich elements (AREs) in the 3′ untranslated region (UTR) of VDR mRNA was also measured by luciferase report assay. Results We identify ZFP36 can bind with the AREs in the 3’UTR of VDR mRNA, leading to mRNA degradation in oral and colonic epithelial cells under inflammatory circumstance. Either ZFP36 protein or AREs of VDR mRNA mutation abolishes this protein-mRNA binding process. After the key amino acid’s mutation, ZFP36 fails to decrease VDR mRNA expression. We also find that VDR physically binds with Y box-binding protein 1 (YBX-1) to block YBX-1’s nuclear translocation and ameliorate cell death in the presence of inflammation. Conclusion These findings provide insights into the cause of VDR decrease in oral and colonic epithelial cells under inflammatory condition and explain how VDR maintains cell viability in these cells. Video abstract
Related Links	https://biosignaling.biomedcentral.com/counter/pdf/10.1186/s12964-021-00765-4.pdf
Ending Page	14
Page Count	14
Starting Page	1
File Format	HTM / HTML
DOI	10.1186/s12964-021-00765-4
Journal	Cell Communication and Signaling
Issue Number	1
Volume Number	19
Language	English
Publisher	BioMed Central
Publisher Date	2021-08-11
Access Restriction	Open
Subject Keyword	Cell Biology Protein-Ligand Interactions Receptors Cytokines and Growth Factors Vitamin D receptor Zinc finger protein 36 Oral lichen planus Inflammatory bowel disease Y box-binding protein 1
Content Type	Text
Resource Type	Article
Subject	Biochemistry Cell Biology Molecular Biology
Journal Impact Factor	8.2/2023
5-Year Journal Impact Factor	8/2023

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