Multifunctional Dendrimer-Entrapped Gold Nanoparticles Conjugated with Doxorubicin for pH-Responsive Drug Delivery and Targeted Computed Tomography Imaging

Novel theranostic nanocarriers exhibit a desirable potential to treat diseases based on their ability to achieve targeted therapy while allowing for real-time imaging of the disease site. Development of such theranostic platforms is still quite challenging. Herein, we present the construction of mul...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 34(2018), 41 vom: 16. Okt., Seite 12428-12435
1. Verfasser: Zhu, Jingyi (VerfasserIn)
Weitere Verfasser: Wang, Guoying, Alves, Carla S, Tomás, Helena, Xiong, Zhijuan, Shen, Mingwu, Rodrigues, João, Shi, Xiangyang
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Antibiotics, Antineoplastic Dendrimers Drug Carriers Gold 7440-57-5 Doxorubicin 80168379AG
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520 |a Novel theranostic nanocarriers exhibit a desirable potential to treat diseases based on their ability to achieve targeted therapy while allowing for real-time imaging of the disease site. Development of such theranostic platforms is still quite challenging. Herein, we present the construction of multifunctional dendrimer-based theranostic nanosystem to achieve cancer cell chemotherapy and computed tomography (CT) imaging with targeting specificity. Doxorubicin (DOX), a model anticancer drug, was first covalently linked onto the partially acetylated poly(amidoamine) dendrimers of generation 5 (G5) prefunctionalized with folic acid (FA) through acid-sensitive cis-aconityl linkage to form G5·NHAc-FA-DOX conjugates, which were then entrapped with gold (Au) nanoparticles (NPs) to create dendrimer-entrapped Au NPs (Au DENPs). We demonstrate that the prepared DOX-Au DENPs possess an Au core size of 2.8 nm, have 9.0 DOX moieties conjugated onto each dendrimer, and are colloid stable under different conditions. The formed DOX-Au DENPs exhibit a pH-responsive release profile of DOX because of the cis-aconityl linkage, having a faster DOX release rate under a slightly acidic pH condition than under a physiological pH. Importantly, because of the coexistence of targeting ligand FA and Au core NPs as a CT imaging agent, the multifunctional DOX-loaded Au DENPs afford specific chemotherapy and CT imaging of FA receptor-overexpressing cancer cells. The constructed DOX-conjugated Au DENPs hold a promising potential to be utilized for simultaneous chemotherapy and CT imaging of various types of cancer cells 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 7 |a Antibiotics, Antineoplastic  |2 NLM 
650 7 |a Dendrimers  |2 NLM 
650 7 |a Drug Carriers  |2 NLM 
650 7 |a Gold  |2 NLM 
650 7 |a 7440-57-5  |2 NLM 
650 7 |a Doxorubicin  |2 NLM 
650 7 |a 80168379AG  |2 NLM 
700 1 |a Wang, Guoying  |e verfasserin  |4 aut 
700 1 |a Alves, Carla S  |e verfasserin  |4 aut 
700 1 |a Tomás, Helena  |e verfasserin  |4 aut 
700 1 |a Xiong, Zhijuan  |e verfasserin  |4 aut 
700 1 |a Shen, Mingwu  |e verfasserin  |4 aut 
700 1 |a Rodrigues, João  |e verfasserin  |4 aut 
700 1 |a Shi, Xiangyang  |e verfasserin  |4 aut 
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