中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (16): 2532-2536.doi: 10.3969/j.issn.2095-4344.0240

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

CCK-8法定量检测亚甲蓝对人髓核细胞的毒性

冯华龙1,何升华2,黄飞强1,赖居易1,孙志涛2,许福光1,蓝志明1   

  1. 1广州中医药大学第四临床医学院,广东省省深圳市   518033;         2深圳市中医院骨科三病区,广东省省深圳市   518033
  • 收稿日期:2018-01-22 出版日期:2018-06-08 发布日期:2018-06-08
  • 作者简介:冯华龙,男,1994年生,江西省赣州市人,汉族,广州中医药大学在读硕士,主要从事脊柱疾病研究。

Quantitative study on cytotoxicity of methylene blue to human nucleus pulposus cells by cell counting-kit 8 assay

Feng Hua-long1, He Sheng-hua2, Huang Fei-qiang1, Lai Ju-yi1, Sun Zhi-tao2, Xu Fu-guang1, Lan Zhi-ming1   

  1. 1the Fourth Clinical Medical School of Guangzhou University of Chinese Medicine, Shenzhen 518033, Guangdong Province, China; 2Third Ward of Orthopedics Department, Shenzhen Hospital of Chinese Medicine, Shenzhen 518033, Guangdong Province, China
  • Received:2018-01-22 Online:2018-06-08 Published:2018-06-08
  • About author:Feng Hua-long, Master candidate, the Fourth Clinical Medical School of Guangzhou University of Chinese Medicine, Shenzhen 518033, Guangdong Province, China

摘要:

文章快速阅读:

文题释义:
亚甲蓝:化学名称为3,7-双(二甲氨基)吩噻嗪-5-翁氯化物,又称亚甲基蓝、次甲基蓝、次甲蓝、美蓝、品蓝,是一种芳香杂环化合物。被用作化学指示剂、染料、生物染色剂和药物使用。亚甲蓝的水溶液在氧化性环境中蓝色,但遇锌、氨水等还原剂会被还原成无色状态。亚甲蓝高浓度时直接使血红蛋白氧化为高铁血红蛋白。低浓度时,在还原型辅酶Ⅰ脱氢酶(NADPH)作用下,还原成为还原型亚甲蓝,能将高铁还原型蛋白还原为血红蛋白。临床上还试用于治疗尿路结石、闭塞性脉管炎、神经性皮炎。
细胞毒性:是由细胞或者化学物质引起的单纯的细胞杀伤事件,不依赖于凋亡或坏死的细胞死亡机制。有时需要进行特定物质细胞毒性的检测,比如药物筛选。
摘要
背景:
前期细胞实验研究发现亚甲蓝确实对人髓核细胞具有毒性作用,且与药物浓度呈正相关,但是其毒性的临界范围未进行研究。
目的:使用CCK-8法定量测定亚甲蓝对髓核细胞毒性作用的临界范围值。
方法:选取1例椎间盘突出症患者的术后废弃髓核组织,提取髓核细胞,培养1代后制作细胞悬液,分9组接种到96孔板,空白对照只有培养基、CCK-8溶液而没有细胞;0加药对照组只有培养基、细胞和CCK-8溶液;其余7个加药组分别加入1%,0.5%,0.1%,0.05%,0.01%,0.005%,0.001%浓度的亚甲蓝干预细胞生长繁殖。在培养24,48,72,96 h后使用CCK-8法测定吸光度,计算细胞活力并观察每一组颜色变化。
结果与结论:①颜色变化:0加药对照组颜色最深,加药组颜色与药物浓度负相关,且0.05%、0.01%、0.005%、0.001%组颜色较深并与0加药组颜色接近;②各组吸光度值均数及细胞活力:与0加药组相比,1%组吸光度减小(P < 0.05),1%与0.5%组比较差异均无显著性意义(P > 0.05),0.1%组吸光度及细胞活力显著高于0.5%组,0.05%组显著高于0.1%组;③结论:亚甲蓝对人髓核细胞具有细胞毒性,毒性临界值在0.1%-0.05%之间且靠近0.05%,确切值还有待于进一步研究。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0002-1273-4592(冯华龙)

关键词: 亚甲蓝, 人髓核细胞, 细胞毒性, 定量研究, 组织构建, CCK-8法

Abstract:

BACKGROUND: Our preliminary study has shown that methylene blue exerts toxic effect on human nucleus pulposus cells in a concentration-dependent manner, but the toxic range remains unclear.
OBJECTIVE: To determine the critical range of the cytotoxicity of methylene blue to nucleus pulposus cells by cell counting-kit 8 (CCK-8) assay.
METHODS: The nucleus pulposus was from a patient with intervertebral disc herniation. The nucleus pulposus cells were extracted and cultured. Passage 1 cells mere used to make cell suspensions. The cells were divided into nine groups for culture: blank control (only the medium, CCK-8 solution), control (only medium, cells and CCK-8 solution), and methylene blue groups (1%, 0.5%, 0.1%, 0.05%, 0.01% and 0.005% of methylene blue). The absorbance values were measured by CCK-8 assay at 24, 48, 72 and 96 hours after incubation. The cell viability was calculated, and the color was observed.
RESULTS AND CONCLUSION: The color in the control group was the darkest, and the color in the methylene blue groups became lighter with the concentration of methylene blue increasing, and the 0.05%, 0.01%, 0.005% and 0.001% methylene blue groups showed darker color similar to the control group. The absorbance values in the 0.1% methylene blue group were significantly less than those in the control group (P < 0.05). There were no significant differences in the absorbance values and cell viability between 1% and 0.5% methylene blue groups (P > 0.05). The absorbance values and cell viability in the 0.1% methylene blue group were significantly higher than those in the 0.5% methylene blue group, but were significantly less than those in the 0.05% methylene blue group (P < 0.05). Thus, methylene blue exerts cytotoxicity to human nucleus pulposus cells, and the critical value of toxicity is between 0.1% and 0.05% and close to 0.05%. However, the exact value needs a further investigation.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Methylene Blue, Cytotoxicity, Immunologic, Tissue Engineering

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