Hydroxylated-Graphene Quantum Dots Induce DNA Damage and Disrupt Microtubule Structure in Human Esophageal Epithelial Cells.

Hydroxylated-Graphene Quantum Dots Induce DNA Damage and Disrupt Microtubule Structure in Human Esophageal Epithelial Cells.
复制标题

羟基化石墨烯量子点诱导 DNA 损伤并破坏人食管上皮细胞的微管结构

DOI:
10.1093/toxsci/kfy090
复制
发表时间:
2018-07-01
期刊:
Toxicological sciences : an official journal of the Society of Toxicology
影响因子:
--
通讯作者:
Shang ZF
Shang ZF
中科院分区:
其他
文献类型:
--
作者:
Li M;Gu MM;Tian X;Xiao BB;Lu S;Zhu W;Yu L;Shang ZF

文献摘要

参考文献

被引文献

相似文献

摘要 石墨烯量子点(GQD)由于其独特的化学和物理性质而引起了人们的极大兴趣。在这项研究中,我们研究了羟基修饰的 GQD(OH-GQD)对人食管上皮细胞系 HET-1A 的潜在影响。我们的数据揭示了 OH-GQD 的显着细胞毒性,它以剂量和时间依赖性方式降低了 HET-1A 的活力。中等浓度(25 或 50 µg/ml)的 OH-GQD 显着阻断 G0/G1 细胞周期期的 HET-1A 细胞。在用不同剂量 OH-GQD(25、50 和 100 µg/ml)处理的细胞中,还检测到 γH2AX 阳性和基因组不稳定细胞的百分比增加。微阵列数据显示,OH-GQD 治疗下调了与 DNA 损伤修复、细胞周期调节和细胞骨架信号通路相关的基因,表明 OH-GQD 的新作用。与微阵列数据一致,OH-GQD 破坏了 HET-1A 细胞中的微管结构并抑制中心体周围的微管再生。总之,我们的研究结果为考虑 OH-GQD 在生物医学领域的应用提供了重要证据。
Abstract Graphene quantum dots (GQDs) have attracted significant interests due to their unique chemical and physical properties. In this study, we investigated the potential effects of hydroxyl-modified GQDs (OH-GQDs) on the human esophageal epithelial cell line HET-1A. Our data revealed significant cytotoxicity of OH-GQDs which decreased the viability of HET-1A in a dose and time-dependent manner. The moderate concentration (25 or 50 µg/ml) of OH-GQDs significantly blocked HET-1A cells in G0/G1 cell cycle phase. An increased percentage of γH2AX-positive and genomically unstable cells were also detected in cells treated with different doses of OH-GQDs (25, 50, and 100 µg/ml). Microarray data revealed that OH-GQDs treatment down-regulated genes related to DNA damage repair, cell cycle regulation and cytoskeleton signal pathways indicating a novel role of OH-GQDs. Consistent with the microarray data, OH-GQDs disrupted microtubule structure and inhibited microtubule regrowth around centrosomes in HET-1A cells. In conclusion, our findings provide important evidence for considering the application of OH-GQDs in biomedical fields.
DOI: 10.1016/j.tox.2014.10.011
发表时间: 2015-01-02
期刊: TOXICOLOGY
影响因子: 4.5
作者:
Qin, Yiru;Zhou, Zhi-Wei;Zhou, Shu-Feng
通讯作者: Zhou, Shu-Feng
DOI: 10.1021/mp400219u
发表时间: 2013-10-01
影响因子: 4.9
作者:
Abdullah-Al-Nahain;Lee, Jung-Eun;Park, Sung Young
通讯作者: Park, Sung Young
DOI: 10.1126/science.1108297
发表时间: 2005-04-22
期刊: SCIENCE
影响因子: 56.9
作者:
Lee, JH;Paull, TT
通讯作者: Paull, TT
DOI: 10.1371/journal.pone.0144906
发表时间: 2015
期刊: PloS one
影响因子: 3.7
作者:
Jiang D;Chen Y;Li N;Li W;Wang Z;Zhu J;Zhang H;Liu B;Xu S
通讯作者: Xu S
DOI: 10.1101/cshperspect.a012716
发表时间: 2013-09-01
影响因子: 7.2
作者:
Marechal, Alexandre;Zou, Lee
通讯作者: Zou, Lee