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The regulation of NFKB1 on CD200R1 expression and their potential roles in Parkinson's disease

Suzhen Lin1, Yimei Shu1, Ruinan Shen1

  • 1Department of Neurology, Institute of Neurology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.

Journal of Neuroinflammation
|September 18, 2024
PubMed
Abstract

Insights

Reduced NFKB1 (nuclear factor kappa-light-chain-enhancer of activated B cells 1) leads to CD200R1 (CD200 receptor 1) dysregulation, causing microglia overactivation in Parkinson's disease (PD). Targeting this NFKB1-CD200R1 pathway offers a novel therapeutic strategy for PD.

Area of Science:

  • Neuroscience
  • Immunology
  • Genetics

Background:

  • Overactivated microglia contribute to neuroinflammation in Parkinson's disease (PD).
  • CD200R1 (CD200 receptor 1) is crucial for microglial quiescence, and its reduced expression is observed in PD.
  • Mechanisms regulating CD200R1 expression and its decline in PD are largely unknown.

Purpose of the Study:

  • To elucidate the transcriptional regulation of CD200R1.
  • To investigate the role of CD200R1 dysregulation in PD pathogenesis.
  • To identify potential therapeutic targets for PD.

Main Methods:

  • Identified CD200R1 promoter region using luciferase assays.
  • Predicted transcription factors using UCSC ChIP-seq and JASPAR databases.
  • Validated NFKB1 (nuclear factor kappa-light-chain-enhancer of activated B cells 1) binding and regulatory effects via EMSA, ChIP, knockdown/overexpression studies, GTEx database analysis, and NFKB1 knockout mice models.
  • Analyzed peripheral blood mononuclear cells from PD patients and controls.

Main Results:

  • NFKB1 directly regulates the CD200R1 core promoter.
  • Significant correlation between NFKB1 and CD200R1 expression in human PBMCs; both are decreased in PD patients.
  • NFKB1 knockout mice showed exacerbated microglia activation and dopaminergic neuron loss following MPTP treatment.

Conclusions:

  • NFKB1 is a direct regulator of CD200R1 expression.
  • Reduced NFKB1 is critical for CD200R1 dysregulation and subsequent microglia overactivation in PD.
  • The NFKB1-CD200R1 axis represents a novel therapeutic target for Parkinson's disease.
Keywords:
CD200R1MicrogliaNFKB1Parkinson’s diseasePromoterTranscription factor

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