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Graphene oxide and adenosine triphosphate as a source for functionalized carbon dots with applications in pH-triggered drug delivery and cell imaging

机译:氧化石墨烯和三磷酸腺苷作为功能化碳点的来源,并在pH触发的药物递送和细胞成像中得到应用

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A folate-functionalized carbon dot-based nanocarrier system has been successfully synthesized for cancer cell targeted drug delivery. We hydrothermally synthesized blue photoluminescent N,P-CDs using adenosine triphosphate and graphene oxide as the starting materials. The particle size of the N,P-CDs was ca. 3.8?nm. An anticancer drug, doxorubicin (DOX), was grafted onto the carbon dots via electrostatic interactions, and a more specific anticancer agent (DOX/N,P-CDs) was obtained. The DOX/N,P-CDs were characterized by H-NMR, C-NMR and UV-vis analysis. In addition, the DOX/N,P-CDs showed a pH-dependent release and were easily absorbed by cells. When compared to DOX, DOX/N,P-CDs nanoparticles exhibited the same cytotoxicity towards human cervical cancer cells (HeLa cells) and human pulmonary adenocarcinoma cells (A549 cells). Hemolysis test results indicated that DOX/N,P-CDs were safe for blood-contact applications and were suitable for intravenous administration. Owing to their intrinsic biocompatibility, N,P-CDs can be used for cell imaging and drug delivery with excellent targeting property.
机译:叶酸官能化的基于碳点的纳米载体系统已成功合成用于癌细胞靶向药物递送。我们以三磷酸腺苷和氧化石墨烯为起始原料,水热合成了蓝色光致发光N,P-CD。 N,P-CDs的粒径为 ca。 3.8?nm。通过静电相互作用将抗癌药阿霉素(DOX)嫁接到碳点上,获得了更特异性的抗癌药(DOX / N,P-CDs)。通过H-NMR,C-NMR和UV-vis分析表征DOX / N,P-CD。此外,DOX / N,P-CDs呈pH依赖性释放,易于被细胞吸收。与DOX相比,DOX / N,P-CDs纳米粒子对人宫颈癌细胞(HeLa细胞)和人肺腺癌细胞(A549细胞)表现出相同的细胞毒性。溶血试验结果表明,DOX / N,P-CDs对于血液接触应用是安全的,并且适合静脉内给药。由于其固有的生物相容性,N,P-CDs可用于细胞成像和药物输送,并具有出色的靶向性能。

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