Acta Medicinae Universitatis Scientiae et Technologiae Huazhong ›› 2026, Vol. 55 ›› Issue (1): 27-33.doi: 10.3870/j.issn.1672-0741.24.07.025

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Value of NRBP1 in Assessing Prognosis of Non-Small Cell Lung Cancer Patients and Its Correlation with G1/S Regulatory Mechanism

Xu Jianqun, Huang Bo, Guo Hongrong et al   

  1. Department of Respiratory Medicine, Wuhan Third Hospital, Wuhan 430071, China
  • Received:2024-07-17 Online:2026-02-15 Published:2026-02-10
  • Contact: E-mail:872069747@qq.com

Abstract: Objective To explore the value of nuclear receptor-binding protein 1(NRBP1)in assessing the prognosis of non-small cell lung cancer(NSCLC)patients and analyze the related regulatory mechanisms through in vitro experiments. Methods Sixty-seven NSCLC patients who underwent surgical treatment at Wuhan Third Hospital from January 2015 to December 2017 were included.Immunohistochemical analysis was performed to assess NRBP1 expression in NSCLC tumor tissues and adjacent tissues.Its correlation with clinicopathological parameters was analyzed.Additionally,the Kaplan-Meier plotter database was used to evaluate the association between NRBP1 and the prognosis of NSCLC patients.SiRNA-mediated knockdown of NRBP1 expression in A549 and 95D cells was performed,and cell proliferation ability was detected via a CCK-8 assay.Cell colony formation experiments were performed to investigate the effects on colony formation.Flow cytometry was used to analyze changes in the cell cycle.qRT-PCR and Western blotting were employed to analyze NRBP1 expression.The expression of Ki-67,CDK4,cyclin D1,and P21,which are related to cell proliferation and the cell cycle in A549 cells,was detected in A549 cells via Western blotting. Results Compared with that in adjacent tissues,the positive expression rate of NRBP1 in NSCLC lung cancer tissue was greater(P<0.01),which was correlated with TNM stage(P<0.05).Compared with patients with high NRBP1 expression,patients with low NRBP1 expression had longer overall survival[HR=1.28(1.13-1.44),log-rank P<0.01].Downregulation of NRBP1 expression in A549 cells and 95D cells inhibited cell proliferation and colony formation,increasing the number of cells in the G1 phase and decreasing the number of cells in the S phase.Downregulation of NRBP1 expression in A549 cells led to decreases in Ki-67,CDK4,and cyclin D1 expression and an increase in P21 expression. Conclusion Increased expression of NRBP1 in NSCLC is associated with poor prognosis,and NRBP1 can participate in the regulation of NSCLC cell proliferation by altering the G1/S phase of the cell cycle.

Key words: NRBP1, non-small cell lung cancer, prognosis, cell cycle

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