Effects on the dispersion and cytotoxicity of ordered mesoporous carbon nanoparticles modified with PVP or PEG
-
摘要: 目的 通过聚乙烯吡咯烷酮(PVP)和培化磷脂酰乙醇胺(DSPE-mPEG2000)对制备的有序介孔碳纳米粒(MCN)进行表面修饰,以改善材料的疏水性质,并考察其对MCN分散性和细胞毒性的影响。 方法 采用低浓度水热法合成MCN,并用PVP和DSPE-mPEG2000对其表面修饰,采用透射电镜(TEM)、扫描电镜(SEM)、氮气吸附脱附仪、粒径仪和红外(IR)等表征其性质。考察了表面修饰对MCN分散性的影响,并用CCK-8法考察材料的细胞毒性,用流式细胞术检测材料对细胞氧化应激的影响。 结果 制备的MCN粒径分布均一,平均粒径约90 nm,修饰后的粒径略有增大,Zeta电位稍有升高,分散性明显提高,但修饰前后材料对小鼠成纤维细胞(L929)和宫颈癌细胞(HeLa)的毒性没有显著性差异,在相同浓度下,修饰后的MCN能明显减少细胞氧化应激的产生。 结论 MCN具有良好的生物相容性,用PVP和DSPE-mPEG2000修饰后的MCN能明显减少细胞氧化应激的发生。Abstract: Objective To improve the hydrophobic properties of the ordered mesoporous carbon nanoparticles(MCN) by PVP or DSPE-mPEG2000 modification, and to compare the effect on the dispersion and cytotoxicity of MCN before and after modification. Methods MCN was synthesized by low concentration hydrothermal method. The surface was modified by PVP or DSPE-mPEG2000. The properties of the materials were characterized by transmission electron microscopy(TEM), scanning electron microscopy(SEM), nitrogen sorption analysis, particle size and infrared spectroscopy(IR). The effect on the dispersion of MCN was investigated. CCK-8 method was used to investigate the cytotoxicity of the materials. Flow cytometry was used to investigate the effect of cell oxidative stress. Results The distribution of synthesized MCN was uniform, with average particle size about 90 nm. The particle size and Zeta potential increased slightly after surface modification, while the dispersibility was significantly improved. No significant difference was observed in the toxicity of L929 and HeLa cells before and after modification. However, the modified MCN showed significant effect of reducing production of cellular reactive oxygen species. Conclusion Ordered mesoporous carbon nanoparticles with surface modified by PVP or DSPE-mPEG2000 provide good biocompatibility and can significantly reduce oxidative stress.
-
Key words:
- ordered mesoporous carbon nanoparticles /
- PVP /
- DSPE-mPEG2000 /
- surface modification /
- cytotoxicity
-
[1] Zhu J, Liao L, Bian X, et al. pH-controlled delivery of doxorubicin to cancer cells, based on small mesoporous carbon nanospheres[J]. Small, 2012, 8(17):2715-2720. [2] Sapino S, Ugazio E, Gastaldi L, et al. Mesoporous silica as topical nanocarriers for quercetin:characterization and in vitro studies[J]. Eur J Pharm Biopharm, 2015, 89:116-125. [3] Zhu W, Zhao Q, Sun C, et al. Mesoporous carbon with spherical pores as a carrier for celecoxib with needle-like crystallinity:improve dissolution rate and bioavailability[J]. Mater Sci Eng C Mater Biol Appl, 2014, 39:13-20. [4] Zhao P, Wang L, Sun C, et al. Uniform mesoporous carbon as a carrier for poorly water soluble drug and its cytotoxicity study[J]. Eur J Pharm Biopharm, 2012, 80(3):535-543. [5] 朱杰,廖蕾,朱丽娜,等. 叶酸功能化介孔碳纳米球负载阿霉素的细胞靶向传递及可控释放[J]. 化学学报, 2013, 71(1):69-74. [6] Zhang X, Zhang T, Ye Y, et al. Phospholipid-stabilized mesoporous carbon nanospheres as versatile carriers for systemic delivery of amphiphobic SNX-2112(a Hsp90 inhibitor) with enhanced antitumor effect[J]. Eur J Pharm Biopharm, 2015, 94:30-41. [7] Zhang Y, Zhao Q, Zhu W, et al. Synthesis and evaluation of mesoporous carbon/lipid bilayer nanocomposites for improved oral delivery of the poorly water-soluble drug, nimodipine[J]. Pharm Res, 2015, 32(7):2372-2383. [8] Gu J, Su S, Li Y, et al. Hydrophilic mesoporous carbon nanoparticles as carriers for sustained release of hydrophobic anti-cancer drugs[J]. Chem Commun(Camb), 2011, 47(7):2101-2103. [9] Fang Y, Gu D, Zou Y, et al. A low-concentration hydrothermal synthesis of biocompatible ordered mesoporous carbon nanospheres with tunable and uniform size[J]. Angew Chem Int Ed Engl, 2010, 49(43):7987-7991. [10] Zhi X, Fang H, Bao C, et al. The immunotoxicity of graphene oxides and the effect of PVP-coating[J]. Biomaterials, 2013, 34(21):5254-5261. [11] 王凯苑,孟颖,阎雪莹. PEG-PLGA包裹的介孔碳纳米给药系统的制备和表征[J]. 黑龙江医药, 2015, 28(2):248-251. [12] Liang H, Jin C, Tang Y, et al. Cytotoxicity of silica nanoparticles on HaCaT cells[J]. J Appl Toxicol, 2014, 34(4):367-372.
计量
- 文章访问数: 3897
- HTML全文浏览量: 400
- PDF下载量: 48
- 被引次数: 0