In Situ formation of pH-/thermo-sensitive nanohybrids via friendly-assembly of poly(N-vinylpyrrolidone) onto LAPONITE®

RSC Advances ◽  
2016 ◽  
Vol 6 (38) ◽  
pp. 31816-31823 ◽  
Author(s):  
Jin'e Wang ◽  
Guoying Wang ◽  
Yi Sun ◽  
Yifeng Wang ◽  
Yang Yang ◽  
...  

Decoration of silicate nanodisks with a pH-sensitive polymer allows for the effective delivery of an anticancer drug in cancer cells with high efficacy.

RSC Advances ◽  
2016 ◽  
Vol 6 (10) ◽  
pp. 8032-8042 ◽  
Author(s):  
Zhipeng Zeng ◽  
Yingqi She ◽  
Zhiping Peng ◽  
Junchao Wei ◽  
Xiaohui He

pH-Sensitive (PEG-b-P(LGA-g-Tyr)) nanogels were fabricated through the enzyme-mediated crosslinking reaction and used to load FITC-BSA for intracellular protein delivery.


Nano LIFE ◽  
2014 ◽  
Vol 04 (03) ◽  
pp. 1441001 ◽  
Author(s):  
Jun Chen ◽  
Xiaojian Li ◽  
Liqian Gao ◽  
Yi Hu ◽  
Wen Zhong ◽  
...  

In light of the challenges along with the traditional intravenous administration of chemotherapeutics, injectable hydrogel-drug system emerges as a powerful tool for noninvasive and in situ controlled-release of drugs. Herein, we report a novel strategy of drug delivery system with pH responsive injectable hydrogels by taking advantages of two biomaterials. The first one is a pH sensitive polymer-drug (prodrug) conjugate, poly (ethylene glycol)–doxorubicin (MPEG–DOX) with hydrazone linkage. This prodrug interacted with a second biomaterial, α-cyclodextrin (α-CD) under mild conditions and subsequently formed the hydrogels in minutes with tunable stiffness. The gels showed a sustained release behavior dependent on the surrounding pH and released drugs effectively killed tumor cells (MCF-7). The quick cell uptake and efficient intracellular delivery of DOX were observed under a confocal microscope. This study thus provides a novel and simple drug encapsulation strategy to deliver poorly soluble drugs in situ for a potential targeted chemotherapy.


2014 ◽  
Vol 847 ◽  
pp. 1-9 ◽  
Author(s):  
Min Su ◽  
Lei Ge ◽  
Shenguang Ge ◽  
Nianqiang Li ◽  
Jinghua Yu ◽  
...  

2013 ◽  
Vol 13 (10) ◽  
pp. 1314-1320 ◽  
Author(s):  
Ching-Ping Liu ◽  
Fong-Sian Lin ◽  
Chih-Te Chien ◽  
Sheng-Yang Tseng ◽  
Chih-Wei Luo ◽  
...  

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