吉林大学学报(医学版) ›› 2023, Vol. 49 ›› Issue (4): 890-895.doi: 10.13481/j.1671-587X.20230409

• 基础研究 • 上一篇    下一篇

胸腺素β4在乳腺癌组织中的表达及其对乳腺癌细胞迁移和侵袭的影响

牟长春1,权春姬2,金全金3,朴正日1()   

  1. 1.延边大学附属医院放射肿瘤科, 吉林 延吉 133000
    2.延边大学附属医院病理科, 吉林 延吉 133000
    3.延边大学附属医院呼吸内科, 吉林 延吉 133000
  • 收稿日期:2022-08-30 出版日期:2023-07-28 发布日期:2023-07-26
  • 通讯作者: 朴正日 E-mail:piaozri_79@163.com
  • 作者简介:牟长春(1998-),男,山东省日照市人,在读硕士研究生,主要从事乳腺癌放射治疗方面的研究。
  • 基金资助:
    国家自然科学基金项目(82060554)

Expression of thymosin beta4 in breast cancer tissue and its effect on migration and invasion of breast cancer cells

Changchun MU1,Chunji QUAN2,Quanjin JIN3,Zhengri PIAO1()   

  1. 1.Department of Radiation Oncology, Affiliated Hospital, Yanbian University, Yanji 133000, China
    2.Department of Pathology, Affiliated Hospital, Yanbian University, Yanji 133000, China
    3.Department of Respiratory Medicine, Affiliated Hospital, Yanbian University, Yanji 133000, China
  • Received:2022-08-30 Online:2023-07-28 Published:2023-07-26
  • Contact: Zhengri PIAO E-mail:piaozri_79@163.com

摘要:

目的 探讨胸腺素β4(Tβ4)在乳腺癌组织中的表达及其对乳腺癌MCF-7细胞迁移和侵袭的影响,并阐明其可能的作用机制。 方法 采用免疫组织化学染色法检测67例女性乳腺癌患者癌组织中Tβ4蛋白表达情况。人乳腺癌MCF-7细胞分为空白对照组、siRNA-control组和siRNA-Tβ4组,采用实时荧光定量PCR(RT-qPCR)法检测各组细胞中Tβ4 mRNA表达水平,Transwell小室实验检测各组细胞侵袭细胞数,细胞划痕实验检测各组细胞划痕愈合率。 结果 67例乳腺癌患者中有59例患者癌组织中Tβ4呈阳性表达(88.06%)。Tβ4阳性表达率与乳腺癌患者的T分期、N分期和临床分期有关联(P<0.05),与患者年龄、雌激素受体(ER)表达、人表皮生长因子受体2(HER2)表达和Ki-67表达无关联(P>0.05)。与空白对照组和siRNA-control组比较,siRNA-Tβ4组细胞中Tβ4 mRNA表达水平明显降低(P<0.01),侵袭细胞数明显减少(P<0.05),细胞划痕愈合率明显降低(P<0.01)。 结论 Tβ4在乳腺癌细胞中呈高水平表达,Tβ4表达与乳腺癌患者T分期、N分期和临床分期有密切关联,靶向沉默Tβ4可以抑制乳腺癌细胞的迁移和侵袭能力。

关键词: 胸腺素β4, 乳腺肿瘤, 细胞迁移, 细胞侵袭

Abstract:

Objective To investigate the expression of thymosin beta 4 (Tβ4) in the breast cancer tissue and its effect on the migration and invasion of the breast cancer MCF-7 cells, and to clarify its possible mechanism. Methods Immunohistochemical staining was used to detect the expressions of Tβ4 protein in cancer tissue of 67 female breast cancer patients. The human breast cancer MCF-7 cells were divided into blank control group, siRNA-control group, and siRNA-Tβ4 group. The expression levels of Tβ4 mRNA in the cells in various groups were detected by real-time fluorescence quantitative PCR (RT-qPCR) method, the numbers of invasion cells in various groups were detected by Transwell chamber assay, and the scratch healing rates of cells in various groups were detected by cell scratch assay. Results Among 67 breast cancer patients, the Tβ4 was positively expressed in tumor tissue of 59 patients (88.06%). The positive expression rates of Tβ4 was associated with the T stage, N stage, and clinical stage of the breast cancer patients (P<0.05); there were no significant correlations between the positive expression rate of Tβ4 with patients’ age, estrogen receptor(ER) expression, human epidermal growth factor receptor-2(HER2) expression, and Ki-67 expression (P>0.05). Compared with blank control group and siRNA-control group, the expression level of Tβ4 mRNA in the cells in siRNA-Tβ4 group was decreased(P<0.01), the number of invasion cells was decreased(P<0.05), and the scratch healing rate of the cells was significantly decreased(P<0.01). Conclusion The expression level of Tβ4 in breast cancer cells is high, the expression of Tβ4 is closely correlated with the T stage, N stage and clinical stage, and targeted silencing Tβ4 could inhibit the invasion and migration abilities of the breast cancer cells.

Key words: Thymosin β4, Breast neoplasm, Cell migration, Cell invasion

中图分类号: 

  • R737.9