Abstract:
:A multifunctional targeted nanoplatform combining photothermal therapy and chemotherapy has emerged as a promising strategy for comprehensive therapies of breast cancer. In this study, we constructed human epidermal growth factor receptor 2 (Her2)-targeted gold nanoshelled poly(lactic-co-glycolic acid) hybrid nanocapsules encapsulating perfluorooctyl bromide, superparamagnetic iron oxide nanoparticles, and doxorubicin (Her2-GPDH nanocapsules) as theranostic agent for bimodal ultrasound/magnetic resonance imaging and synergistic photothermal-chemotherapy of Her2-postive breast cancer cells. Her2-GPDH nanocomposites possessed well-defined spherical morphology, and the average diameter was about 296 nm with good dispersion. Targeting assays demonstrated that Her2-GPDH nanocapsules exhibited higher targeting binding to Her2-positive SKBR3 cells than Her2-negative MDA-MB-231cells. The encapsulation efficiency and the loading content of doxorubicin in Her2-GPDH nanocapsules were 39 ± 1.45% and 3.8 ± 0.52%, respectively, and the agent exhibited pH-responsive and near-infrared light-triggered stepwise release behavior of doxorubicin. In vitro, the agent had potential to serve as feasible candidate for ultrasound imaging and T2-weighted magnetic resonance imaging with a relatively high relaxivity. Cell experiments confirmed that the agent had significant photothermal cytotoxicity on SKBR3 cells, and the combined photothermal-chemotherapy could significantly enhance the anti-tumor effect. In summary, the present Her2-GPDH nanocapsules, a novel multifunctional nanoplatform, will offer a new way for early bimodal molecular-level diagnosis and synergistic treatment of Her2-positve breast cancer.
journal_name
J Biomater Appljournal_title
Journal of biomaterials applicationsauthors
Dong Q,Wan C,Yang H,Zheng D,Xu L,Zhou Z,Xie S,Du J,Li Fdoi
10.1177/0885328220929616subject
Has Abstractpub_date
2020-09-01 00:00:00pages
430-445issue
3eissn
0885-3282issn
1530-8022journal_volume
35pub_type
杂志文章abstract::Glass Polyalkenoate Cements (GPCs) based on strontium calcium zinc silicate (Sr-Ca-Zn-SiO2) glasses and high molecular weight poly(acrylic acid) (PAA) have been shown to exhibit suitable mechanical properties for orthopaedic arthroplasty applications, however for vertebroplasty and other medical luting applications th...
journal_title:Journal of biomaterials applications
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journal_title:Journal of biomaterials applications
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journal_title:Journal of biomaterials applications
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