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The regulation of NFKB1 on CD200R1 expression and their potential roles in Parkinson’s disease
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The regulation of NFKB1 on CD200R1 expression and their potential roles in Parkinson’s disease
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Journal Article
The regulation of NFKB1 on CD200R1 expression and their potential roles in Parkinson’s disease
2024
Overview
Background
Overactivated microglia are a key contributor to Parkinson’s disease (PD) by inducing neuroinflammation. CD200R1, a membrane glycoprotein mainly found on microglia, is crucial for maintaining quiescence with its dysregulation linked to microglia’s abnormal activation. We and other groups have reported a decline in CD200R1 levels in several neurological disorders including PD. However, the mechanism regulating CD200R1 expression and the specific reasons for its reduction in PD remain largely unexplored. Given the pivotal role of transcription factors in gene expression, this study aimed to elucidate the transcriptional regulation of CD200R1 and its implications in PD.
Methods
The CD200R1 promoter core region was identified via luciferase assays. Potential transcription factors were predicted using the UCSC ChIP-seq database and JASPAR. NFKB1 binding to the CD200R1 core promoter was substantiated through electrophoretic mobility shift and chromatin immunoprecipitation assays. Knocking-down or overexpressing NFKB1 validated its regulatory effect on CD200R1. Correlation between decreased CD200R1 and deficient NFKB1 was studied using Genotype-Tissue Expression database. The clinical samples of the peripheral blood mononuclear cells were acquired from 44 PD patients (mean age 64.13 ± 9.78, 43.2% male, median Hoehn-Yahr stage 1.77) and 45 controls (mean age 64.70 ± 9.41, 52.1% male). NFKB1 knockout mice were utilized to study the impact of NFKB1 on CD200R1 expression and to assess their roles in PD pathophysiology.
Results
The study identified the CD200R1 core promoter region, located 482 to 146 bp upstream of its translation initiation site, was directly regulated by NFKB1. Significant correlation between NFKB1 and CD200R1 expression was observed in human PMBCs. Both NFKB1 and CD200R1 were significantly decreased in PD patient samples. Furthermore, NFKB1-/- mice exhibited exacerbated microglia activation and dopaminergic neuron loss after 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) treatment.
Conclusion
Our study identified that NFKB1 served as a direct regulator of CD200R1. Reduced NFKB1 played a critical role in CD200R1 dysregulation and subsequent microglia overactivation in PD. These findings provide evidence that targeting the NFKB1-CD200R1 axis would be a novel therapeutic strategy for PD.
Publisher
BioMed Central,BioMed Central Ltd,BMC
Subject
/ Analysis
/ Animals
/ Biomedical and Life Sciences
/ CD200R1
/ China
/ Diseases
/ Ethylenediaminetetraacetic acid
/ Female
/ Genes
/ Humans
/ Male
/ Mice
/ Neomycin
/ NF-kappa B p50 Subunit - genetics
/ NF-kappa B p50 Subunit - metabolism
/ NFKB1
/ Orexin Receptors - metabolism
/ Parkinson Disease - genetics
/ Parkinson Disease - metabolism
/ Parkinson Disease - pathology
/ Promoter
