Calcium doped mesoporous silica nanoparticles as efficient alendronate delivery vehicles

2012 ◽  
Vol 36 (9) ◽  
pp. 1717 ◽  
Author(s):  
Jinlou Gu ◽  
Meng Huang ◽  
Jiapeng Liu ◽  
Yongsheng Li ◽  
Wenru Zhao ◽  
...  
Pharmaceutics ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 288 ◽  
Author(s):  
Thashini Moodley ◽  
Moganavelli Singh

There is a need for the improvement of conventional cancer treatment strategies by incorporation of targeted and non-invasive procedures aimed to reduce side-effects, drug resistance, and recurrent metastases. The anti-cancer drug, 5-fluorouracil (5-FU), is linked to a variety of induced-systemic toxicities due to its lack of specificity and potent administration regimens, necessitating the development of delivery vehicles that can enhance its therapeutic potential, while minimizing associated side-effects. Polymeric mesoporous silica nanoparticles (MSNs) have gained popularity as delivery vehicles due to their high loading capacities, biocompatibility, and good pharmacokinetics. MSNs produced in this study were functionalized with the biocompatible polymers, chitosan, and poly(ethylene)glycol to produce monodisperse NPs of 36–65 nm, with a large surface area of 710.36 m2/g, large pore volume, diameter spanning 9.8 nm, and a favorable zeta potential allowing for stability and enhanced uptake of 5-FU. Significant drug loading (0.15–0.18 mg5FU/mgmsn), controlled release profiles (15–65%) over 72 hours, and cell specific cytotoxicity in cancer cells (Caco-2, MCF-7, and HeLa) with reduced cell viability (≥50%) over the non-cancer (HEK293) cells were established. Overall, these 5FU-MSN formulations have been shown to be safe and effective delivery systems in vitro, with potential for in vivo applications.


Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 742 ◽  
Author(s):  
Thashini Moodley ◽  
Moganavelli Singh

The fruition, commercialisation and clinical application combining nano-engineering, nanomedicine and material science for utilisation in drug delivery is becoming a reality. The successful integration of nanomaterial in nanotherapeutics requires their critical development to ensure physiological and biological compatibility. Mesoporous silica nanoparticles (MSNs) are attractive nanocarriers due to their biodegradable, biocompatible, and relative malleable porous frameworks that can be functionalized for enhanced targeting and delivery in a variety of disease models. The optimal formulation of an MSN with polyethylene glycol (2% and 5%) and chitosan was undertaken, to produce sterically stabilized, hydrophilic MSNs, capable of efficient loading and delivery of the hydrophobic anti-neoplastic drug, doxorubicin (DOX). The pH-sensitive release kinetics of DOX, together with the anticancer, apoptosis and cell-cycle activities of DOX-loaded MSNs in selected cancer cell lines were evaluated. MSNs of 36–60 nm in size, with a pore diameter of 9.8 nm, and a cumulative surface area of 710.36 m2/g were produced. The 2% pegylated MSN formulation (PCMSN) had the highest DOX loading capacity (0.98 mgdox/mgmsn), and a sustained release profile over 72 h. Pegylated-drug nanoconjugates were effective at a concentration range between 20–50 μg/mL, inducing apoptosis in cancer cells, and affirming their potential as effective drug delivery vehicles.


Nanoscale ◽  
2018 ◽  
Vol 10 (43) ◽  
pp. 20354-20365 ◽  
Author(s):  
Lidong Cao ◽  
Huirong Zhang ◽  
Zhaolu Zhou ◽  
Chunli Xu ◽  
Yongpan Shan ◽  
...  

Carbon dots-embedded hollow double-shelled mesoporous silica nanoparticles serve as pesticide delivery vehicles.


2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Dina S. El-kady ◽  
Mostafa Mabrouk ◽  
Soheir Kotob ◽  
Mervat Abd-Elhalim ◽  
Gamal Elmegeed ◽  
...  

2017 ◽  
Vol 5 (7) ◽  
pp. 1339-1352 ◽  
Author(s):  
Jianhua Zhu ◽  
Yimin Niu ◽  
Yang Li ◽  
Yaxiang Gong ◽  
Huihui Shi ◽  
...  

In the past decade, stimuli-responsive drug delivery vehicles based on surface-functionalized mesoporous silica nanoparticles have attracted intense interest as a new type of drug carrier.


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