中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (11): 1577-1583.doi: 10.3969/j.issn.2095-4344.2016.11.009

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

亚砷酸钠对人永生化角质形成细胞株恶性转化的影响

李艳玲,胡玉贤,张晓光,王  凌   

  1. 河北医科大学第二医院皮肤性病科,河北省石家庄市  050000
  • 收稿日期:2016-01-22 出版日期:2016-03-11 发布日期:2016-03-11
  • 作者简介:李艳玲,女,1976年生,河北省保定市人,汉族,2007年河北医科大学毕业,硕士,副主任医师,副教授。研究方向为皮肤性病科及皮肤外科方面。
  • 基金资助:
    河北省科技计划项目(12277745)

Effect of sodium arsenite on malignant transformation of human immortalized keratinocyte cell lines

Li Yan-ling, Hu Yu-xian, Zhang Xiao-guang, Wang Ling   

  1. Department of Dermatology, Second Affiliated Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei Province, China
  • Received:2016-01-22 Online:2016-03-11 Published:2016-03-11
  • About author:Li Yan-ling, Master, Associate chief physician, Associate professor, Department of Dermatology, Second Affiliated Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei Province, China
  • Supported by:

    the Scientific Plan Project of Hebei Province, No. 12277745

摘要:

文章快速阅读:

文题释义:

人永生化角质形成细胞株:HaCaT细胞来源于正常成人皮肤角质形成细胞,通过体外在低钠离子浓度和室温条件下长期培养而自发永生化建立的角质细胞系。目前对于HaCaT细胞自发永生化的确切机制尚不了解,但已有的研究表明这是一个逐渐发生的多步骤基因改变的过程,主要是细胞沉默基因的失活和永生化基因的激活。
亚砷酸钠颗粒:砷以不同晶格结构的类金属形式存在于自然界,但更容易发现的形式是砷化物与砷酸盐化合物。砷与其化合物被运用在农药、除草剂、杀虫剂与许多种的合金中,可通过饮水、食物和空气等进入人体。大量流行病学调查表明,长期摄入砷化物可引起多种癌症,其中最常见的是皮肤癌、肺癌和膀肮癌,因此,砷化物已被国际癌症协会确认为人类确定致癌物。

 

背景:有研究发现亚砷酸钠可以引起HaCaT细胞的恶性转化,并具有致瘤性,但关于低浓度亚砷酸钠是否引起HaCaT细胞发生恶性转化的研究不多。
目的:分析亚砷酸钠对HaCaT细胞恶性转化的影响。
方法:将HaCaT细胞加入不同浓度的亚砷酸钠进行培养,MTT测定亚硫酸钠对HaCaT细胞形态和增殖能力的影响,流式细胞术测定亚硫酸钠对HaCaT细胞周期的影响,软琼脂集落形成实验测定亚硫酸钠对HaCaT细胞克隆形成能力的影响。

结果与结论:①5 mol/L亚砷酸钠对HaCaT细胞生长没有影响,但10和50 mol/L亚砷酸钠抑制HaCaT细胞生长。②HaCaT细胞经0.1 mol/L亚砷酸钠处理后,传代培养至第20代时,HaCaT细胞的形态没有明显改变,第25代时,细胞体积增大,有多个核仁,有不断增殖趋势。③与原代细胞相比,经0.1 mol/L亚砷酸钠处理后传至第15及25代HaCaT细胞S期细胞和G2/M期细胞所占比例增加,增殖能力增强,克隆形成率增加,且第25代HaCaT细胞的增殖能力和克隆形成率高于第15代。④实验结果说明,高浓度亚砷酸钠降低HaCaT细胞的活力,低浓度亚硫酸钠对HaCaT人永生化皮肤角质形成细胞的细胞形态、细胞周期、增殖能力以及克隆形成能力均有一定的影响,随着传代的增加,人永生角质形成细胞增殖能力和克隆形成能力不断增强。 

ORCID: 0000-0002-1962-373X(李艳玲)

关键词: 组织构建, 组织工程, 亚砷酸钠, 人永生化角质形成细胞, 恶性转化, 细胞形态, 细胞周期, 增殖, 克隆

Abstract:

BACKGROUND: Studies have found that sodium arsenite can cause the malignant transformation and tumorigenicity of HaCaT cells, but whether low concentrations of sodium arsenite can cause the malignant transformation is rarely reported.
OBJECTIVE: To study the effect of sodium arsenite on the malignant transformation of human immortalized keratinocyte cell lines.
METHODS: HaCaT cells were treated with different concentrations of sodium arsenite. MTT assay was used to determine the effect of sodium arsenite on HaCaT cell morphology and proliferation, flow cytometry used to detect the effect of sodium arsenite on HaCaT cell cycle, and soft agar colony formation experiments assay used to determine the effect of sodium arsenite on HaCaT cell colony formation capacity.
RESULTS AND CONCLUSION: HaCaT cells grew well when the concentration of sodium arsenite was 5 mol/L, but the cell growth was inhibited under intervention with 10 and 50 mol/L sodium arsenite. HaCaT cells treated with 0.1 mol/L sodium arsenite were passaged to the 20th generation, and cell morphology had no notable changes; cells at passage 25 exhibited enlarged size and multiple nucleoli, which had a continued proliferation trend. Compared with the primarily cultured cells, 0.1 mol/L sodium arsenite-treated HaCaT cells at passages 15 and 25 had an increased proportion at S phase and G2/M phase, with strengthened proliferation ability and increased colony-forming efficiency, and moreover, the proliferation ability and colony-forming efficiency of passage 25 cells were higher than those of passage 15 cells. These experimental data show that high concentrations of sodium arsenite reduce HaCaT cell viability, and low concentrations of sodium sulfite have a certain influence on the morphology, cell cycle, proliferation ability and colony-forming efficiency of HaCaT cells, and moreover, the proliferation ability and colony-forming efficiency of human immortalized keratinocytes will be strengthened with the increase of passage.