医学分子生物学杂志 ›› 2023, Vol. 20 ›› Issue (4): 298-304.doi: 10.3870/j.issn.1672-8009.2023.04.004

• 论著 • 上一篇    下一篇

干扰成纤维细胞生长因子-18 对结肠癌细胞的抗肿瘤研究 

  

  1. 河南大学淮河医院病理科 河南省开封市, 475000
  • 出版日期:2023-07-31 发布日期:2023-09-06
  • 基金资助:
    河南省医学科技攻关计划项目 (No. LHGJ20210563)

Effect of Fibroblast Growth Factor 18 in Colon Cancer Cells

  1. Department of Pathology, Huaihe Hospital of Henan University, Kaifeng, Henan, 475000, China
  • Online:2023-07-31 Published:2023-09-06

摘要: 目的 初步探讨干扰成纤维生长因子 18 (fibroblast growth factor-18, FGF-18) 在结肠癌中的抗肿 瘤作用。 方法 体外培养结肠癌细胞株 SW480, 分为 Control 组、 shRNA-NC 组和 sh-FGF-18 组; 克隆实验 检测细胞增殖能力; 流式细胞仪检测细胞凋亡情况; Hoechst 观察凋亡后细胞形态变化; 划痕实验检测细胞 迁移能力; Transwell 检测细胞侵袭能力; HE 染色观察小鼠肝和肺组织转移情况; Western 印迹检测上皮间 质转化 (epithelial-mesenchymal transition, EMT) 相关标记物 E-钙粘蛋白 (E cadherin, E-cad), N-钙粘蛋 白 (N-cadherin, N-cad), 纤维连接蛋白 (fibronectin, FN) 水平; 裸鼠成瘤实验检测肿瘤体积及大小; 免 疫组化检测小鼠肿瘤组织 E-cad、 N-cad、 FN 在结肠癌组织中的阳性表达。 结果 与 shRNA-NC 组比较, FGF-18-shRNA 组细胞 FGF-18 mRNA 和蛋白水平相对表达水平降低, 克隆细胞和侵袭细胞减少, 划痕距离 增加, 凋亡细胞增多, E-cad 蛋白水平增加, N-cad 和 FN 蛋白水平减少; E-cad 在 sh-FGF-18 组中的阳性表 达高于 shRNA-NC 组, N-cad 和 FN 的表达低于 shRNA-NC 组 (P< 0. 05)。 与 shRNA-NC 组比较, sh-FGF-18 组中原发灶瘤体重量变轻, 体积变小 (P< 0. 05), 肝和肺组织表面转移灶较少 (P< 0. 05)。 结论 干扰 FGF-18 基因表达抑制结肠癌细胞的增殖、 迁移和侵袭, 促进凋亡, 抑制裸鼠移植瘤生长能力, 可能通过抑 制 EMT 途径影响肿瘤转移。 

关键词: 成纤维生长因子 18, 结肠癌, 增殖, 抗肿瘤

Abstract: Objective To explore the effect of fibroblast growth factor 18 (FGF-18) in colon cancer. Methods The colon cancer cell lines (SW480) were cultured in vitro and divided into 3 groups: control group, shRNA-NC group and sh-FGF-18 group. The cells proliferation was detected by colony formation assay. The apoptosis was detected by flow cytometry. The changes of cells morphology after apoptosis were observed by Hoechst. The cell migration was detected by wound healing assay. The cell invasion was detected by Transwell assay. The metastasis of liver and lung tissues was observed by HE staining. The expression levels of epithelial-mesenchymal transition (EMT) related markers [ E-cadherin ( E-cad ), N-cadherin ( N-cad ), fibronectin ( FN)] were detected by Western blotting. The volume and size of tumors were detected by tumor formation assay in nude mice. The positive expressions of E-cad, N-cad and FN in colon cancer tissues were detected by immunohistochemistry. Results Compared with these in the shRNA-NC group, the relative expression levels of FGF-18 mRNA and protein were decreased in the FGF-18-shRNA group, the number of colonies, migrated cells and invasive cells were reduced, the number of apoptotic cells was increased, the expression level of E-cad was increased, and the expression levels of N-cad and FN were decreased. The positive rate of E-cad expression in colon cancer tissues in the sh-FGF-18 group was higher than that in the shRNA-NC group, while the positive rate of N-cad and FN expressions were lower than those in the shRNA-NC group (P< 0. 05). The tumor weight of primary lesions was lower, and the volume was smaller in the sh-FGF-18 group when compared with those in the shRNA-NC group (P< 0. 05), and there were fewer metastases of liver and lung tissues in the sh-FGF 18 group (P< 0. 05). Conclusion Interfering with FGF-18 can inhibit the proliferation, migration and invasion of colon cancer cells, promote apoptosis and inhibit xenograft growth in nude mice, which may affect tumors metastasis by inhibiting EMT pathway.

Key words: fibroblast growth factor 18, colon cancer, proliferation, anti-tumor

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