CD200 and lung cancer: This study aims to explore whether c/EBPβ negatively regulates CD200R1 to induce microglia-medicated neuroinflammation in the spinal cord of CIBP mice.<h4>Methods</h4>The CIBP mice model was constructed by intrafemoral injection of Lewis lung cancer cells to investigate the role of CD200/CD200R1 signaling and their upstream molecule CCAAT/enhancer binding protein β (c/EBPβ) in CIBP.