scholarly journals Carbon quantum dots-stabilized Pickering emulsion to prepare NIR light-responsive PLGA drug delivery system

2020 ◽  
Vol 23 ◽  
pp. 100951 ◽  
Author(s):  
Tongchang Zhou ◽  
Zheng Huang ◽  
Feng Wan ◽  
Yi Sun
2018 ◽  
Vol 115 (3) ◽  
pp. 501-506 ◽  
Author(s):  
Meng Qiu ◽  
Dou Wang ◽  
Weiyuan Liang ◽  
Liping Liu ◽  
Yin Zhang ◽  
...  

A biodegradable drug delivery system (DDS) is one the most promising therapeutic strategies for cancer therapy. Here, we propose a unique concept of light activation of black phosphorus (BP) at hydrogel nanostructures for cancer therapy. A photosensitizer converts light into heat that softens and melts drug-loaded hydrogel-based nanostructures. Drug release rates can be accurately controlled by light intensity, exposure duration, BP concentration, and hydrogel composition. Owing to sufficiently deep penetration of near-infrared (NIR) light through tissues, our BP-based system shows high therapeutic efficacy for treatment of s.c. cancers. Importantly, our drug delivery system is completely harmless and degradable in vivo. Together, our work proposes a unique concept for precision cancer therapy by external light excitation to release cancer drugs. If these findings are successfully translated into the clinic, millions of patients with cancer will benefit from our work.


Nanomedicine ◽  
2019 ◽  
Vol 14 (15) ◽  
pp. 2011-2025 ◽  
Author(s):  
Zhen Li ◽  
Jialong Fan ◽  
Chunyi Tong ◽  
Hongyan Zhou ◽  
Wenmiao Wang ◽  
...  

Aim: Constructing a new drug-delivery system using carboxylated graphene quantum dots (cGQDs) for tumor chemotherapy in vivo. Materials & methods: A drug-delivery system was synthesized through a crosslink reaction of cGQDs, NH2-poly(ethylene glycol)-NH2 and folic acid. Results: A drug delivery system of folic acid-poly(ethylene glycol)-cGQDs was successfully constructed with ideal entrapment efficiency (97.5%) and drug-loading capacity (40.1%). Cell image indicated that the nanosystem entered into human cervical cancer cells mainly through macropinocytosis-dependent pathway. In vivo experiments showed the outstanding antitumor ability and low systemic toxicity of this nanodrug-delivery system. Conclusion: The newly developed drug-delivery system provides an important alternative for tumor therapy without causing systemic adverse effects.


2018 ◽  
Vol 6 (47) ◽  
pp. 7794-7799 ◽  
Author(s):  
Rongrong Nie ◽  
Hongji Liu ◽  
Lin Hu ◽  
Xinyu Gu ◽  
Junchao Qian ◽  
...  

This communication reports a chitosan-gated carbon-based nanocarrier as a NIR light-switchable drug delivery system for controlled on/off drug release.


2015 ◽  
Vol 44 (22) ◽  
pp. 10343-10351 ◽  
Author(s):  
Xijian Liu ◽  
Qilong Ren ◽  
Fanfan Fu ◽  
Rujia Zou ◽  
Qian Wang ◽  
...  

A difunctional nanoplatform (CuS@mSiO2-PEG) acted as a NIR light induced photothermal-triggered drug delivery system for efficient chemo-photothermal therapy.


2018 ◽  
Vol 54 (47) ◽  
pp. 6060-6063 ◽  
Author(s):  
Shengyong Geng ◽  
Lie Wu ◽  
Haodong Cui ◽  
Wenyong Tan ◽  
Tianfeng Chen ◽  
...  

Black phosphorus quantum dots are incorporated into liposomal bilayers to produce a drug delivery system with excellent near-infrared (NIR) photothermal properties and drug release capability controlled by light.


Pharmaceutics ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 242 ◽  
Author(s):  
Miaomiao Luo ◽  
Wei Cheng ◽  
Xiaowei Zeng ◽  
Lin Mei ◽  
Gan Liu ◽  
...  

Due to the inherent limitations, single chemo or photothermal therapies (PTT) are always inefficient. The combination of chemotherapy and PTT for the treatment of cancers has attracted a great interest during the past few years. As a photothermal agent, black phosphorus quantum dots (BPQDs) possess an excellent extinction coefficient, high photothermal conversion efficacy, and good biocompatibility. Herein, we developed a photo- and pH-sensitive nanoparticle based on BPQDs for targeted chemo-photothermal therapy. Doxorubicin (DOX) was employed as a model drug. This nanosystem displayed outstanding photothermal performance both in vitro and in vivo. Folic acid conjugation onto the surface endowed this system an excellent tumor-targeting effect, which was demonstrated by the cellular targeting assay. The BPQDs-based drug delivery system exhibited pH- and photo-responsive release properties, which could reduce the potential damage to normal cells. The in vitro cell viability study showed a synergistic effect in suppressing cancer cell proliferation. Therefore, this BPQDs-based drug delivery system has substantial potential for future clinical applications.


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