中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (28): 4492-4496.doi: 10.12307/2021.063

• 材料生物相容性 material biocompatibility • 上一篇    下一篇

靶向性氧化石墨烯-白术内酯Ⅰ对卵巢癌细胞凋亡及细胞周期的影响

甘  芳   

  1. 青海大学附属医院妇科,青海省西宁市   810001
  • 收稿日期:2020-06-13 修回日期:2020-06-17 接受日期:2020-07-14 出版日期:2021-10-08 发布日期:2021-05-20
  • 通讯作者: 甘芳,副主任医师,青海大学附属医院妇科,青海省西宁市 810001
  • 作者简介:甘芳,女,1971年生,副主任医师,主要从事妇科内分泌及妇科泌尿学研究。
  • 基金资助:
    青海省卫计委一般指导性课题(2018wjzdx-101),项目负责人:甘芳

Effects of targeted graphene oxide loaded with atractylenolide-I on apoptosis and cell cycle of ovarian cancer cells

Gan Fang   

  1. Department of Gynecology, Affiliated Hospital of Qinghai University, Xining 810001, Qinghai Province, China
  • Received:2020-06-13 Revised:2020-06-17 Accepted:2020-07-14 Online:2021-10-08 Published:2021-05-20
  • Contact: Gan Fang, Associate chief physician, Department of Gynecology, Affiliated Hospital of Qinghai University, Xining 810001, Qinghai Province, China
  • About author:Gan Fang, Associate chief physician, Department of Gynecology, Affiliated Hospital of Qinghai University, Xining 810001, Qinghai Province, China
  • Supported by:
    the General Guiding Subject of Health and Family Planning Commission of Qinghai Province, No. 2018wjzdx-101 (to GF)

摘要:

文题释义:

白术内酯:是东亚地区历史悠久的中草药白术中提取的一种有效成分,具有广泛的生物学和药理活性,如抗炎、神经保护和胃保护作用,有3种主要成分,分别被命名为白术内酯Ⅰ、白术内酯Ⅱ和白术内酯Ⅲ,其中白术内酯Ⅰ的抗肿瘤活性最佳。

氧化石墨烯:是石墨烯最重要的衍生物之一,在基面上有羟基和环氧基,在边缘有羧基,在纯水中具有更好的分散性,为表面功能化提供反应位点。同时,极性基团可增强氧化石墨烯纳米片的水溶性,使其在生物传感、分子成像、基因转染和药物传递等生物医学领域有着广泛应用,在药物递送方面优于其他碳基纳米材料。
背景:白术内酯Ⅰ具有抗炎、抗氧化、抗肿瘤等多种药理和生物学活性,但其水溶性差、光照不稳定、渗透性低,生物利用度低。
目的:制备一种新型卵巢癌细胞靶向白术内酯Ⅰ(AT-Ⅰ)载体,评价其理化性质和生物学活性。
方法:对氧化石墨烯(GO)进行功能化,获得精氨酸甘氨酸天冬氨酸-氧化石墨烯共轭结构(RGD@GO),随后采用乳液-溶剂扩散法制备负载白术内酯Ⅰ的RGD@GO纳米粒子(RGD@GO-AT-Ⅰ),检测该纳米粒子的载药量与体外释药性能。将人卵巢癌细胞A2780分别与GO-AT-Ⅰ溶液、RGD@GO-AT-Ⅰ溶液、RGD@GO溶液、AT-Ⅰ溶液共培养,设与PBS共培养为对照,24,48 h后MTT法检测细胞活力。将人卵巢癌细胞A2780分别与GO-AT-Ⅰ溶液、RGD@GO-AT-Ⅰ溶液共培养,设与PBS共培养为对照,培养48 h检测细胞周期与细胞凋亡。
结果与结论:①RGD@GO-AT-Ⅰ的最高载药量为(28.09±0.17)%;体外30 h内,RGD@GO-AT-Ⅰ展现出良好的药物释放曲线;②培养24,48 h,GO-AT-Ⅰ组、RGD@GO-AT-Ⅰ组细胞存活率低于对照组(P < 0.01),RGD@GO-AT-Ⅰ组细胞存活率低于GO-AT-Ⅰ组(P < 0.01);③GO-AT-Ⅰ组、RGD@GO-AT-Ⅰ组亚G1期细胞比例高于对照组(P < 0.01),G0/G1期细胞比例低于对照组(P < 0.01);RGD@GO-AT-Ⅰ组亚G1期细胞比例高于GO-AT-Ⅰ组(P < 0.01),G0/G1期细胞比例低于GO-AT-Ⅰ组(P < 0.01);④GO-AT-Ⅰ组、RGD@GO-AT-Ⅰ组细胞凋亡率高于对照组(P < 0.01),RGD@GO-AT-Ⅰ组细胞凋亡率高于GO-ATⅠ组(P < 0.01);⑤结果表明,靶向RGD@GO-AT-Ⅰ通过抑制A2780细胞G0/G1期、诱导细胞凋亡来抑制细胞增殖,显著增强白术内酯Ⅰ的抗癌活性。

https://orcid.org/0000-0003-0567-4090(甘芳) 

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料口腔生物材料纳米材料缓释材料材料相容性;组织工程


关键词: 材料, 载体, 氧化石墨烯, 肿瘤, 卵巢癌, 靶向性, 细胞凋亡, 细胞周期

Abstract: BACKGROUND: Atractylolide I (AT-I) has a variety of pharmacological and biological activities, such as anti-inflammatory, anti-oxidation, and anti-tumor, but it has poor water solubility, light instability, low permeability, and low bioavailability.
OBJECTIVE: To prepare a novel AT-I vector targeting ovarian cancer cells and evaluate its physicochemical properties and biological activities. 
METHODS: We functionalized graphene oxide (GO) to obtain arginine glycine aspartate-graphene oxide conjugated structure (RGD@GO), which is stable and biocompatible in a variety of biological solutions, then loaded with hydrophobic molecule AT-I. AT-I loaded RGD@GO nanoparticles (RGD@GO-AT-I) was prepared by emulsion solvent diffusion method. The drug loading and in vitro release properties of the nanoparticles were determined. The human ovarian cancer cell A2780 was co-cultured with GO-AT-I solution, RGD@GO-AT-I solution, RGD@GO solution, and AT-I solution, and co-culture with PBS was set as the control. Cell viability was detected by MTT method after 24 and 48 hours. Human ovarian cancer cell A2780 was co-cultured with GO-AT-I solution and RGD@GO-AT-I solution, and co-culture with PBS was set as the control. Cell cycle and apoptosis were detected after 48 hours of culture. 
RESULTS AND CONCLUSION: (1) The highest drug load of RGD@GO-AT-I was (28.09±0.17)%; RGD@GO-AT-I showed a good drug release curve within 30 hours in vitro. (2) After culture for 24 and 48 hours, the cell survival rate of GO-AT-I group and RGD@GO-AT-I group was lower than that of control group (P < 0.01). The cell survival rate of RGD@GO-AT-I group was lower than that of GO-AT-I group (P < 0.01). (3) The proportion of cells in sub-G1  phase in GO-AT-I group and RGD@GO-AT-I group was higher than that in the control group (P < 0.01), and the proportion of cells in G0/G1  phase was lower than that in the control group (P < 0.01). The proportion of cells in the sub-G1  phase in RGD@GO-AT-I group was higher than that in GO-AT-I group (P < 0.01). The proportion of cells in G0/G1  phase was lower than that in GO-AT-I group (P < 0.01). (4) The apoptosis rates of GO-AT-I group and RGD@GO-AT-I group were higher than that of control group (P < 0.01). The apoptosis rate of RGD@GO-AT-I group was higher than that of GO-AT-I group (P < 0.01). (5) The results showed that targeting RGD@GO-AT-I inhibited cell proliferation by inhibiting the G0/G1 phase of A2780 cells and inducing apoptosis, and significantly enhanced the anti-cancer activity of AT-I.

Key words: materials, vector, graphene oxide, tumor, ovarian cancer, targeting, apoptosis, cell cycle

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