中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (25): 3987-3992.doi: 10.3969/j.issn.2095-4344.0957

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

甲状腺乳头状癌肿瘤干细胞增殖、凋亡、侵袭与miR-93的影响

何新制1,卢冠铭2,浦 涧3,韦忠恒4,马燕飞1,陈永诚1,覃 强1,黄前方1,罗志斋1   

  1. 1靖西市人民医院普通外科,广西壮族自治区靖西市 531600;右江民族医学院附属医院,2腺体外科,3肝胆外科,4肿瘤科,广西壮族自治区百色市 533000
  • 修回日期:2018-03-12 出版日期:2018-09-08 发布日期:2018-09-08
  • 通讯作者: 卢冠铭,博士,副教授,副主任医师,右江民族医学院附属医院腺体外科,广西壮族自治区百色市 533000
  • 作者简介:何新制,1980年生,广西壮族自治区靖西市人,主治医师,主要从事普外科方面的研究。
  • 基金资助:

    国家自然科学基金(81060028);广西教育厅项目(KY2016YB342)

miR-93 effects on the proliferation, apoptosis and invasion of tumor stem cells in thyroid papillary carcinoma

He Xin-zhi1, Lu Guan-ming2, Pu Jian3, Wei Zhong-heng4, Ma Yan-fei1, Chen Yong-cheng1, Qin Qiang1Huang Qian-fang1, Luo Zhi-zhai1   

  1. 1Department of General Surgery, Jingxi People’s Hospital, Jingxi 531600, Guangxi Zhuang Autonomous Region, China; 2Department of Gland Surgery, 3Department of Hepatobiliary Surgery, 4Department of Oncology, Affiliated Hospital of Youjiang Medical College for Nationalities, Baise 533000, Guangxi Zhuang Autonomous Region, China
  • Revised:2018-03-12 Online:2018-09-08 Published:2018-09-08
  • Contact: Lu Guan-ming, M.D., Associate professor, Associate chief physician, Department of Gland Surgery, Affiliated Hospital of Youjiang Medical College for Nationalities, Baise 533000, Guangxi Zhuang Autonomous Region, China
  • About author:He Xin-zhi, Attending physician, Department of General Surgery, Jingxi People’s Hospital, Jingxi 531600, Guangxi Zhuang Autonomous Region, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81060028; the Project of the Education Department of Guangxi Zhuang Autonomous Region, No. KY2016YB342

摘要:

文章快速阅读:

文题释义:
miR-93:
microRNA(简称miR)是一类广泛存在于真核细胞中的内源性非编码小RNA,长18-25 nt,进化具有高度保守性,可调控细胞的周期及凋亡,在人类疾病与肿瘤发生及进展中扮演着重要角色。miR-93属于miR-106b-25家族,位于染色体7q22.1,研究证实其在衰老、高血糖症、成骨细胞钙化中发挥了重要作用,同时还参与了肝癌、胃癌、乳腺癌、肺癌、卵巢癌及前列腺癌等肿瘤的发生及进展。
CD44:对CD44的研究时间较长、较深入亦较广泛。已知其为分布极为广泛的细胞表面跨膜糖蛋白,主要参与异质性黏附,即肿瘤细胞与宿主细胞和宿主基质的黏附,异质性黏附在肿瘤细胞侵袭转移中起促进作用。

 

摘要
背景:
前期研究发现,miR-93作为保护因子而非致病因子参与甲状腺腺瘤及其应激胰岛素抵抗的发生和发展。
目的:研究miR-93对甲状腺乳头状癌肿瘤干细胞增殖、凋亡及侵袭能力的影响。 
方法:采用流式细胞技术从人甲状腺乳头状癌细胞TPC-1中分选CD44+CD24-肿瘤干细胞与非CD44+CD24-细胞,检测两种细胞中miR-93基因的表达。取CD44+CD24-肿瘤干细胞,分别转染miR-93模拟物与miRNA模拟物对照,采用CCK-8法、流式细胞技术、Transwell小室检测细胞增殖、凋亡、侵袭能力,采用Western Blot 检测细胞增殖蛋白Ki67、凋亡蛋白Bax及Bcl-2、侵袭标志蛋白MMP-2及MMP-9的表达。
结果与结论:①CD44+CD24-细胞中的miR-93表达明显低于非CD44+CD24-细胞(P < 0.05);②转染miR-93模拟物的CD44+CD24-肿瘤干细胞的增殖速度明显慢于转染miRNA模拟物对照组(P < 0.05),细胞增殖蛋白Ki67表达明显低于转染miRNA模拟物对照组(P < 0.05);③转染miR-93模拟物的CD44+CD24-肿瘤干细胞的凋亡率明显高于转染miRNA模拟物对照组(P < 0.05),促凋亡蛋白Bax表达高于转染miRNA模拟物对照组(P < 0.05),抗凋亡蛋白Bcl-2表达低于转染miRNA模拟物对照组(P < 0.05);④转染miR-93模拟物的CD44+CD24-肿瘤干细胞的侵袭能力、侵袭标志蛋白MMP-2及MMP-9表达均明显低于转染miRNA模拟物对照组(P < 0.05);⑤结果表明,miR-93可抑制甲状腺乳头状癌肿瘤干细胞的增殖及侵袭能力,促进其凋亡。

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: 0000-0001-9186-2973(何新制)

关键词: 甲状腺乳头状癌, 肿瘤干细胞, miR-93, 细胞增殖, 细胞凋亡, 细胞侵袭, 干细胞, 国家自然科学基金

Abstract:

BACKGROUND: Previous studies have found that miR-93 acts as a protective factor rather than a virulence factor involved in the occurrence and development of thyroid adenomas and stress insulin resistance.
OBJECTIVE: To study the effect of miR-93 on the proliferation, apoptosis and invasion of tumor stem cells in thyroid papillary carcinoma.
METHODS: Flow cytometry was used to sort CD44+CD24- cells (cancer stem cells) and CD44+CD24- cells in human thyroid cancer cells TPC-1. The expression levels of miR-93 gene were detected in these two kinds of cells. CD44+CD24- cancer stem cells were transfected with miR-93 mimics and miRNA mimics. Then, cell proliferation, apoptosis and invasion were detected through cell counting kit-8, flow cytometry, Transwell assay, respectively. Western blot assay was also used to measure expression of Ki67, Bax, Bcl-2, matrix metalloproteinases 2 and 9.
RESULTS AND CONCLUSION: The expression of miR-93 in CD44+CD24- cells was significantly lower than that in non-CD44+CD24- cells  (P < 0.05). CD44+CD24- tumor stem cells transfected with miR-93 mimics exhibited lower proliferation (P < 0.05) and lower Ki67 expression than those transfected with miRNA mimics (P < 0.05). Compared with the miRNA mimics group, higher apoptotic rate, higher Bax expression and lower Bcl-2 expression were detected in the miR-93 mimics group (P < 0.05). Cell invasion ability and expression levels of matrix metalloproteinases 2 and 9 were also lower in the CD44+CD24- cancer stem cells transfected with miR-93 mimics than those transfected with miRNA mimics (P < 0.05). Our experimental findings suggest that miR-93 can inhibit the proliferation and invasion of tumor stem cells in thyroid papillary carcinoma and promote cell apoptosis.

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: Thyroid Neoplasms, Neoplastic Stem Cells, MicroRNAs, Transfection, Cell Proliferation, Apoptosis, Tissue Engineering

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