大理大学学报 ›› 2025, Vol. 10 ›› Issue (8): 51-56.DOI: 10. 3969 / j. issn. 2096-2266. 2025. 08. 007

• 基础医学 • 上一篇    下一篇

FIBCD1在人肺癌细胞株A549增殖中的作用

李 华,张 敏,方佩斐,张燕飞   

  1. (安徽第二医学院基础医学院,合肥 230601)
  • 收稿日期:2024-12-26 修回日期:2025-01-08 出版日期:2025-08-15 发布日期:2025-09-06
  • 作者简介:李华,讲师,主要从事解剖生理研究。
  • 基金资助:
    安徽医学高等专科学校高层次人才科研启动基金项目(2024RC008)

The Function of FIBCD1 in Proliferation of Human Lung Cancer Cell Line A549

Li Hua, Zhang Min, Fang Peifei, Zhang Yanfei   

  1. (School of Medical Science, Anhui Institute of Medicine, Hefei 230601, China)
  • Received:2024-12-26 Revised:2025-01-08 Online:2025-08-15 Published:2025-09-06

摘要: 目的:探讨含纤维蛋白原C结构域1(FIBCD1)在肺癌中的作用。方法:采用慢病毒介导的RNA干扰技术构建FIBCD1
敲低的A549肺癌细胞株,通过实时定量PCR和蛋白质印迹法验证敲低效率。利用MTT法评估细胞增殖情况,流式细胞术确
定细胞周期和凋亡情况,菌落形成及动物成瘤试验检测敲低FIBCD1 对A549细胞菌落形成及肿瘤生长的影响。结果:FIBCD1
敲低显著抑制A549细胞增殖,诱导G0/G1期细胞周期阻滞,并显著提高细胞凋亡率。菌落形成试验进一步证实,抑制FIBCD1
会影响A549细胞的菌落形成。动物实验结果显示,敲低FIBCD1 显著减缓裸鼠体内肿瘤的生长,肿瘤质量与体内发光强度均
低于对照组。结论:FIBCD1 在肺癌细胞中具有促进增殖、抑制凋亡的作用,其高表达可能与肿瘤生长密切相关。FIBCD1 的抑
制可显著降低肺癌细胞的致瘤能力,提示其有望作为肺癌治疗的潜在靶点。

关键词: 含纤维蛋白原C结构域1, 流式细胞术, 菌落形成, 动物成瘤试验

Abstract: Objective: To explore the role of fibrinogen-related C domain 1 (FIBCD1) in lung cancer. Methods: A FIBCD1-
knockdown A549 lung cancer cell line was constructed using lentivirus-mediated RNA interference. The knockdown efficiency was
validated by quantitative real-time PCR and Western blotting. Cell proliferation was assessed by MTT assay, while cell cycle
distribution and apoptosis were analyzed via flow cytometry. The effects of FIBCD1 knockdown on colony formation and tumor growth
were evaluated using colony formation assay and in vivo xenograft tumor formation assay in nude mice. Results: FIBCD1 knockdown
significantly inhibited A549 cell proliferation, induced G0/G1 phase cell cycle arrest, and markedly increased the apoptotic rate.
Colony formation assay further confirmed that FIBCD1 suppression impaired the colony-forming ability of A549 cells. In vivo
experiments showed that FIBCD1 knockdown significantly attenuated tumor growth in nude mice, with reduced tumor weight and in
vivo luminescence intensity compared to the control group. Conclusion: FIBCD1 exerts a role in promoting proliferation and inhibiting
apoptosis in lung cancer cells. Its high expression may be closely associated with tumor growth. Suppression of FIBCD1 significantly
reduces the tumorigenic potential of lung cancer cells, indicating that FIBCD1 holds promise as a potential therapeutic target for lung
cancer.

Key words: fibrinogen-related C domain 1, flow cytometry, colony formation, in vivo xenograft tumor formation assay

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