A dual-delivery system of pH-responsive chitosan-functionalized mesoporous silica nanoparticles bearing BMP-2 and dexamethasone for enhanced bone regeneration

2015 ◽  
Vol 3 (10) ◽  
pp. 2056-2066 ◽  
Author(s):  
Qi Gan ◽  
Jiaoyang Zhu ◽  
Yuan Yuan ◽  
Honglai Liu ◽  
Jiangchao Qian ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Bone Regeneration ◽  
Silica Nanoparticles ◽  
Delivery System ◽  
Mesoporous Silica Nanoparticles ◽  
Synergistic Action ◽  
Ph Responsive ◽  
Functionalized Mesoporous Silica

A proton-triggered chitosan-MSNs ensemble is fabricated to simultaneously deliver dexamethasone and BMP-2. With the synergistic action of BMP-2 and Dex, this dual-delivery system can effectively enhance bone regeneration.

scholarly journals A pH-responsive mesoporous silica nanoparticles-based drug delivery system with controlled release of andrographolide for OA treatment

2021 ◽  
Vol 8 (4) ◽  
Author(s):  
Mingwei He ◽  
Zainen Qin ◽  
Xiaonan Liang ◽  
Xixi He ◽  
Bikang Zhu ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Drug Delivery System ◽  
Delivery System ◽  
Mesoporous Silica Nanoparticles ◽  
Cruciate Ligament ◽  
Drug Loading ◽  
Inflammatory Factors ◽  
Ph Responsive

Abstract Andrographolide (AG) has favorable anti-inflammatory and antioxidative capacity. However, it has low bioavailability due to high lipophilicity and can be easily cleared by the synovial fluid after intra-articular injection, leading to low therapeutic efficiency in osteoarthritis (OA). Herein, we designed a nano-sized pH-responsive drug delivery system (DDS) for OA treatment by using modified mesoporous silica nanoparticles (MSNs) with pH-responsive polyacrylic acid (PAA) for loading of AG to form AG@MSNs-PAA nanoplatform. The nanoparticles have uniform size (∼120 nm), high drug loading efficiency (22.38 ± 0.71%) and pH-responsive properties, beneficial to sustained release in OA environment. Compared with AG, AG@MSNs-PAA showed enhanced antiarthritic efficacy and chondro-protective capacity based on IL-1β-stimulated chondrocytes and anterior cruciate ligament transection-induced rat OA model, as demonstrated by lower expression of inflammatory factors and better prevention of proteoglycan loss. Therefore, the AG@MSNs-PAA nanoplatform may be developed as a promising OA-specific and on-demand DDS.

Dual pH-responsive mesoporous silica nanoparticles for efficient combination of chemotherapy and photodynamic therapy

2015 ◽  
Vol 3 (23) ◽  
pp. 4707-4714 ◽  
Author(s):  
Xuemei Yao ◽  
Xiaofei Chen ◽  
Chaoliang He ◽  
Li Chen ◽  
Xuesi Chen
Keyword(s):  
Drug Delivery ◽  
Photodynamic Therapy ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Drug Delivery System ◽  
Delivery System ◽  
Mesoporous Silica Nanoparticles ◽  
Silica Nanoparticle ◽  
Ph Responsive ◽  
Mesoporous Silica Nanoparticle

By metallo-supramolecular coordinated interaction between Zn-Por and histidine, a dual pH-responsive mesoporous silica nanoparticle (MSN)-based drug delivery system has been fabricated for synergistic chemo-photodynamic therapy.

Sign in / Sign up

Export Citation Format

Share Document