当前位置: X-MOL 学术Dalton Trans. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Degradable pH-responsive NIR-II imaging probes based on a polymer-lanthanide composite for chemotherapy.
Dalton Transactions ( IF 3.5 ) Pub Date : 2020-06-19 , DOI: 10.1039/d0dt02042g
Miao Feng 1 , Yanxing Wang 1 , Bi Lin 1 , Xiangrong Peng 1 , Ying Yuan 2 , Xiaofeng Tao 2 , Ruichan Lv 1
Affiliation  

In this research, a pH-sensitive degradable nanoprobe was designed by combining hydrophobic rare earth nanoparticles with biocompatible mPEG-PLGA nanomicelles for near infrared II (NIR-II) imaging-guided anti-tumor chemotherapy. The as-synthesized nanoprobes (about 300 nm) with a highly enhanced permeability and retention (EPR) effect show great potential in the diagnosis of solid tumors, providing new prospects for clinical tumor diagnosis. Then, the degradable composite probes increase the imaging sensitivity of the probe and allow for the slow release of the internal anti-tumor drugs, reducing the loss of the drug during delivery. Finally, ultra-small rare earth nanoparticles (about 6 nm) can be excreted after hydrolysis of the composite probe to reduce the enrichment of the inorganic nanoparticles in vivo. Thus, this degradable NIR-II imaging probe based on a polymer-lanthanide composite could be a promising candidate for preclinical cancer chemotherapy and surgery navigation under a single 808 nm laser.

中文翻译:

基于聚合物-镧系元素复合物的可降解pH响应NIR-II成像探针,用于化学疗法。

在这项研究中,通过将疏水性稀土纳米粒子与生物相容性mPEG-PLGA纳米胶束结合在一起,设计了一种pH敏感的可降解纳米探针,用于近红外II(NIR-II)成像引导的抗肿瘤化疗。合成的纳米探针(约300 nm)具有高度增强的渗透性和保留(EPR)效应,在实体瘤的诊断中显示出巨大的潜力,为临床肿瘤诊断提供了新的前景。然后,可降解的复合探针提高了探针的成像灵敏度,并允许内部抗肿瘤药物缓慢释放,从而减少了药物在输送过程中的损失。最后,复合探针水解后可将超小稀土纳米颗粒(约6 nm)排出体外,以减少体内无机纳米颗粒的富集。因此,这种基于聚合物-镧系元素复合物的可降解NIR-II成像探针可能是在单808 nm激光下进行临床前癌症化疗和手术导航的有希望的候选者。
更新日期:2020-07-17
down
wechat
bug