Controllable synthesis of up-conversion nanoparticles UCNPs@MIL-PEG for pH-responsive drug delivery and potential up-conversion luminescence/magnetic resonance dual-mode imaging

2018 ◽  
Vol 749 ◽  
pp. 939-947 ◽  
Author(s):  
Yana Liu ◽  
Cheng Zhang ◽  
Hui Liu ◽  
Yuebin Li ◽  
Zushun Xu ◽  
...  

2018 ◽  
Vol 25 (25) ◽  
pp. 3036-3057 ◽  
Author(s):  
Xiao Sun ◽  
Guilong Zhang ◽  
Zhengyan Wu

According to the differences of microenvironments between tumors and healthy tissues, if the anticancer drugs or magnetic resonance contrast agents (MRCAs) can be controlled to precisely match physiological needs at targeted tumor sites, it is expected to acquire better therapeutic efficacy and more accurate diagnosis. Over the decade, stimuli-responsive nanomaterials have been a research hotspot for cancer treatment and diagnosis because they show many excellent functions, such as in vivo imaging, combined targeting drug delivery and systemic controlled release, extended circulation time, etc. Among the various stimuli nanosystems, pH-stimuli mode is regarded as the most general strategy because of solid tumors acidosis. When exposed to weakly acidic tumor microenvironment, pH-responsive nanoplatforms can generate physicochemical changes for their structure and surface characteristics, causing drug release or contrast enhancement. In this review, we focused on the designs of various pH-responsive nanoplatforms and discussed the mechanisms of controlled drug release or switch on-off in MRCAs. This review also discussed the efficacy of cellular internalization for these nanoplatforms via endocytosis of acidic tumor cell. Meanwhile, nanoplatforms response to acidic intracellular pH (such as endosome, lysosome) are discussed, along with approaches for improving drug release performance and magnetic resonance contrast enhancement. A greater understanding of these pH-responsive nanoplatforms will help design more efficient nanomedicine to address the challenges encountered in conventional diagnosis and chemotherapy.



2016 ◽  
Vol 4 (6) ◽  
pp. 1100-1107 ◽  
Author(s):  
Ruiqing Liu ◽  
Shuang Liang ◽  
Cun Jiang ◽  
Li Zhang ◽  
Tianmeng Yuan ◽  
...  

Paramagnetic, luminescent, and temperature/pH-responsive polymeric particles with MR/optical imaging and antitumor drug delivery capability are prepared by emulsifier-free emulsion polymerization.



2018 ◽  
Vol 228 ◽  
pp. 216-219 ◽  
Author(s):  
Keke Sun ◽  
Chen Xu ◽  
Tianke Hu ◽  
Caixue Lin ◽  
Yifeng Wang ◽  
...  


2017 ◽  
Vol 28 (49) ◽  
pp. 495101 ◽  
Author(s):  
Chen Xu ◽  
Cheng Zhang ◽  
Yingxi Wang ◽  
Liu Li ◽  
Ling Li ◽  
...  




ACS Nano ◽  
2017 ◽  
Vol 11 (7) ◽  
pp. 7049-7059 ◽  
Author(s):  
Xiao Sun ◽  
Ruohong Du ◽  
Li Zhang ◽  
Guilong Zhang ◽  
Xiaojia Zheng ◽  
...  




2017 ◽  
Vol 46 (40) ◽  
pp. 13686-13689 ◽  
Author(s):  
Xuechuan Gao ◽  
Guanfeng Ji ◽  
Ruixue Cui ◽  
Jingjuan Liu ◽  
Zhiliang Liu

This work presents for the first time the synthesis of a novel nanoscale Fe-MOF/Eu-MOF heterostructure, which exhibits excellent magnetic resonance/optical imaging capacity and satisfactory drug delivery behavior.







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