MRI Enhancement and Tumor Targeted Drug Delivery Using Zn2+-Doped Fe3O4 Core/Mesoporous Silica Shell Nanocomposites

2020 ◽  
Vol 3 (3) ◽  
pp. 1690-1697
Author(s):  
Weijun Fang ◽  
Wenjuan Zhu ◽  
Hu Chen ◽  
Hanyuan Zhang ◽  
Shi Hong ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Mesoporous Silica ◽  
Targeted Drug Delivery ◽  
Silica Shell ◽  
Targeted Drug ◽  
Fe3o4 Core

scholarly journals ADAM9-Responsive Mesoporous Silica Nanoparticles for Targeted Drug Delivery in Pancreatic Cancer

Cancers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 3321
Author(s):  
Etienne J. Slapak ◽  
Lily Kong ◽  
Mouad el Mandili ◽  
Rienk Nieuwland ◽  
Alexander Kros ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Conditioned Medium ◽  
Drug Delivery System ◽  
Delivery System ◽  
Targeted Drug Delivery ◽  
Mesoporous Silica Nanoparticles ◽  
Pdac Cell ◽  
Targeted Drug

Pancreatic ductal adenocarcinoma (PDAC) has the worst survival rate of all cancers. This poor prognosis results from the lack of efficient systemic treatment regimens, demanding high-dose chemotherapy that causes severe side effects. To overcome dose-dependent toxicities, we explored the efficacy of targeted drug delivery using a protease-dependent drug-release system. To this end, we developed a PDAC-specific drug delivery system based on mesoporous silica nanoparticles (MSN) functionalized with an avidin–biotin gatekeeper system containing a protease linker that is specifically cleaved by tumor cells. Bioinformatic analysis identified ADAM9 as a PDAC-enriched protease, and PDAC cell-derived conditioned medium efficiently cleaved protease linkers containing ADAM9 substrates. Cleavage was PDAC specific as conditioned medium from leukocytes was unable to cleave the ADAM9 substrate. Protease linker-functionalized MSNs were efficiently capped with avidin, and cap removal was confirmed to occur in the presence of PDAC cell-derived ADAM9. Subsequent treatment of PDAC cells in vitro with paclitaxel-loaded MSNs indeed showed high cytotoxicity, whereas no cell death was observed in white blood cell-derived cell lines, confirming efficacy of the nanoparticle-mediated drug delivery system. Taken together, this research introduces a novel ADAM9-responsive, protease-dependent, drug delivery system for PDAC as a promising tool to reduce the cytotoxicity of systemic chemotherapy.

Redox stimuli-responsive hollow mesoporous silica nanocarriers for targeted drug delivery in cancer therapy

2016 ◽  
Vol 1 (6) ◽  
pp. 480-487 ◽  
Author(s):  
Ye Tian ◽  
Ranran Guo ◽  
Yunfeng Jiao ◽  
Yangfei Sun ◽  
Shun Shen ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Mesoporous Silica ◽  
Targeted Drug Delivery ◽  
Tumor Targeting ◽  
Mesoporous Silica Nanoparticles ◽  
Stimuli Responsive ◽  
Disulfide Linkages ◽  
Targeting Delivery ◽  
Targeted Drug ◽  
Hollow Mesoporous Silica

Transferrin-capped hollow mesoporous silica nanoparticles through disulfide linkages realize tumor-targeting delivery and glutathione-induced drug release.

Ingenious pH-sensitive etoposide loaded folic acid decorated mesoporous silica-carbon dot with carboxymethyl-βcyclodextrin gatekeeper for targeted drug delivery and imaging

2018 ◽  
Vol 92 ◽  
pp. 892-901 ◽  
Author(s):  
Marziyeh Poshteh Shirani ◽  
Behzad Rezaei ◽  
Taghi Khayamian ◽  
Mohammad Dinari ◽  
Fazileh Hosseini Shamili ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Folic Acid ◽  
Mesoporous Silica ◽  
Targeted Drug Delivery ◽  
Ph Sensitive ◽  
Carbon Dot ◽  
Targeted Drug
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