中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (5): 710-715.doi: 10.3969/j.issn.2095-4344.1566

• 肿瘤干细胞 cancer stem cells • 上一篇    下一篇

抑制GATA5蛋白可否促进HELA细胞中癌干细胞因子sox2、c-myc及CD44的表达

冯海鹏1,2,郑艺菲1,2,周 莹1,2,李志路1,2,孙 艳1,2,刘 坤1,2,张瑞祝1,2,王桥芸1,2,孟 波2,林 波1,2,李孟森1,2,3   

  1. 1海南省肿瘤发生与干预重点实验室,海南省海口市 571199;2海南医学院,海南省海口市 571199;3海南医学院肿瘤研究所,海南省海口市 571199
  • 修回日期:2018-10-30 出版日期:2019-02-18 发布日期:2019-02-18
  • 通讯作者: 李孟森,教授,博士,海南省肿瘤发生与干预重点实验室,海南省海口市 571199;海南医学院,海南省海口市571199;海南医学院肿瘤研究所,海南省海口市 571199; 林波,博士,海南省肿瘤发生与干预重点实验室,海南省海口市 571199;海南医学院,海南省海口市 571199
  • 作者简介:冯海鹏,男,1990年生,山东省人,2017 年潍坊医学院毕业,主要从事肿瘤发生与干预研究。 共同第一作者:郑艺菲,女,1991年生,陕西省人,2013年海南医学院毕业,主要从事肿瘤发生与干预研究。 共同第一作者:周莹,女,1991年生, 湖北省人,2016年湖北科技学院毕业,主要从事肿瘤发生与干预研究。
  • 基金资助:

    国家自然科学基金项目(81560450),项目负责人:李孟森;国家自然科学基金项目(31560243),项目负责人:林波;海南省研究生创新课题基金项目(Hys2017-178),项目负责人:孟波;海南省研究生创新课题基金项目(Hys2017-180),项目负责人:冯海鹏;海南省研究生创新课题基金项目(Hys2018-277),项目负责人:冯海鹏;海南省研究生创新课题基金项目(Hys2018-278),项目负责人:王桥芸;海南省研究生创新课题基金项目(Hys2018-279),项目负责人:张瑞祝

Inhibition of GATA5 expression in HELA cells promotes expression of sox2, c-myc and CD44 in HELA cells

Feng Haipeng1, 2, Zheng Yifei1, 2, Zhou Ying1, 2, Li Zhilu1, 2, Sun Yan1, 2, Liu Kun1, 2, Zhang Ruizhu1, 2, Wang Qiaoyun1, 2, Meng Bo2, Lin Bo1, 2, Li Mengsen1, 2, 3   

  1. 1Hainan Provincial Key Laboratory of Oncology Occurrence and Intervention, Haikou 571199, Hainan Province, China; 2Hainan Medical University, Haikou 571199, Hainan Province, China; 3Institute of Oncology, Hainan Medical University, Haikou 571199, Hainan Province, China
  • Revised:2018-10-30 Online:2019-02-18 Published:2019-02-18
  • Contact: Li Mengsen, MD, Professor, Hainan Provincial Key Laboratory of Oncology Occurrence and Intervention, Haikou 571199, Hainan Province, China; Hainan Medical University, Haikou 571199, Hainan Province, China; Institute of Oncology, Hainan Medical University, Haikou 571199, Hainan Province, China; Lin Bo, MD, Hainan Provincial Key Laboratory of Oncology Occurrence and Intervention, Haikou 571199, Hainan Province, China; Hainan Medical University, Haikou 571199, Hainan Province, China
  • About author:Feng Haipeng, Hainan Provincial Key Laboratory of Oncology Occurrence and Intervention, Haikou 571199, Hainan Province, China; Hainan Medical University, Haikou 571199, Hainan Province, China. Zheng Yifei, Hainan Provincial Key Laboratory of Oncology Occurrence and Intervention, Haikou 571199, Hainan Province, China; Hainan Medical University, Haikou 571199, Hainan Province, China. Zhou Ying, Hainan Provincial Key Laboratory of Oncology Occurrence and Intervention, Haikou 571199, Hainan Province, China; Hainan Medical University, Haikou 571199, Hainan Province, China. Feng Haipeng, Zheng Yifei and Zhou Ying contributed equally to this work.
  • Supported by:

    the National Natural Science Foundation of China, No. 81560450 (to LMS) and 31560243 (to LB); Hainan Provincial Postgraduate Innovation Project, No. Hys2017-178 (to MB), Hys2017-180 (to FHP), Hys2018-277 (to FHP), Hys2018-278 (to WQY), and Hys2018-279 (to ZRZ)

摘要:

文章快速阅读:

文题释义:
sox2:
SRY(sex determining region Y)-box2,也称为sox2,是sox家族的一员,作为一种转录因子,是维持未分化的胚胎干细胞自我更新或多能性必不可少的编程因子;在哺乳动物的许多发展阶段发挥关键作用。癌细胞中被过度激活,也作为癌干细胞标志性因子。
c-myc:c-myc位于第8染色体上,作为转录因子调节原癌基因的表达。Myc家族由3个相关的人类基因c-myc、l-myc和n-myc组成。在癌症中,c-myc编程因子被激活并持续表达,导致激活许多癌基因表达进而促使癌症的形成,c-myc被认为是抗癌药物的一个有前景的靶点。

 

摘要
背景:
GATA5蛋白在多种癌症发生过程中被抑制表达,有研究显示GATA5降低表达或被甲基化后失去功能,不能有效促进干细胞分化,维持细胞的正常功能。宫颈癌HELA细胞表达GATA5蛋白,在宫颈癌中抑制GATA5表达是否可促进其恶性转化还是未知。
目的:分析GATA5蛋白在宫颈癌HELA细胞中被进一步抑制表达后,其恶性转化情况及与癌干细胞形成相关因子sox2,c-myc及CD44的表达情况。
方法:转入CMV-siRNA-gata5,使GATA5在HELA细胞中被进一步抑制表达后, ①RT-PCR检测c-myc mRNA,sox2 mRNA的表达;②MTT法检测HELA细胞的增殖能力;③检测HELA细胞的集落形成和软琼脂单克隆形成能力;④Western blot检测细胞GATA5、c-myc、sox2蛋白表达变化;⑤激光共聚焦检测细胞的CD44蛋白定位及蛋白表达变化。
结果与结论:用CMV-siRNA-gata5抑制HELA细胞中的GATA5表达后,HELA细胞的增殖能力、单克隆形成及集落形成能力均增强;同时发现其癌干细胞因子c-myc,sox2,CD44的表达增强。提示GATA5蛋白被抑制表达后,HELA细胞的恶行性为增加,其机制可能是GATA5被抑制后,促进了癌干细胞因子sox2,c-myc,CD44等的表达。


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID:
0000-0002-4184-3202(冯海鹏);0000-0001-5124-322X(郑艺菲);0000-0002-5379-8875(周莹)

关键词: 宫颈癌, HELA细胞, GATA5, c-myc, sox2, CD44, 干细胞

Abstract:

BACKGROUND: GATA5, as a tumor suppressor gene, plays a role in inhibiting the development of cancer. GATA5 can be methylated in gastrointestinal tumors and then lose its function. GATA5 can be also methylated during hepatocarcinogenesis, and then cannot promote the differentiation of stem cells and maintain the normal function. Cervical cancer HELA cells express GATA5 protein, in which whether GATA5 plays a tumor suppressor function is still unknown.           
OBJECTIVE: To analyze the expression of sox2, c-myc and CD44 related to cancer stem cell formation after suppressing the expression of GATA5 in cervical cancer HELA cells.
METHODS: Transfection of CMV-siRNA-gata5 further inhibited the expression of GATA5 in cervical cancer HELA cells. The expression of c-myc mRNA and sox2 mRNA were then detected by RT-PCR. The proliferation of HELA cells was detected by MTT. The colony formation and soft agar monoclonal formation of HELA cells were observed. The expression of GATA5, c-myc and sox2 was detected by western blot. The expression and location of CD44 was detected by laser confocal microscope.
RESULTS AND CONCLUSION: After suppressing the expression of GATA5 in cervical cancer HELA cells by CMV-siRNA-gata5, the proliferation, cell monoclonal formation and colony formation of HELA cells were enhanced. The expression of c-myc, sox2 and CD44 was also strengthened. These findings indicate that the malignant activity of HELA cells is increased by inhibiting the GATA5 protein expression. The mechanism may be that inhibition of GATA5 promotes the expression of cancer stem cell factors sox2, c-myc, and CD44.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Uterine Cervical Neoplasms, Hela Cells, GATA5 Transcription Factor, Proto-Oncogene Proteins c-myc, SOXB2 Transcription Factors, Stem Cells

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