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International Journal of Nanomedicine

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https://www.readbyqxmd.com/read/29343959/antitumor-effect-of-a-new-nano-vector-with-mirna-135a-on-malignant-glioma
#1
Chaofeng Liang, Weitong Sun, Haiyong He, Baoyu Zhang, Cong Ling, Bocheng Wang, Tengchao Huang, Bo Hou, Ying Guo
Introduction: MiR-135a is found to selectively induce apoptosis in glioma cell but not in normal neurons and glial cells. However, low transfection efficacy limits its application in vivo as other miRNAs. We prepared a new kind of nano-vector based on polyethylene glycol methyl ether (mPEG) and hyper-branched polyethylenimine (hy-PEI) in order to improve the miRNA delivery system into the glioma cells. Methods: The mPEG-g-PEI/miR-135a was constructed and detected by 1H NMR and FTIR analyses...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29343958/preparation-of-anastrozole-loaded-peg-pla-nanoparticles-evaluation-of-apoptotic-response-of-breast-cancer-cell-lines
#2
Yusra A Alyafee, Manal Alaamery, Shahad Bawazeer, Mansour S Almutairi, Badr Alghamdi, Nawaf Alomran, Atia Sheereen, Maha Daghestani, Salam Massadeh
Purpose: Anastrozole (ANS) is an aromatase inhibitor that is widely used as a treatment for breast cancer in postmenopausal women. Despite the wide use of ANS, it is associated with serious side effects due to uncontrolled delivery. In addition, ANS exhibits low solubility and short plasma half-life. Nanotechnology-based drug delivery has the potential to enhance the efficacy of drugs and overcome undesirable side effects. In this study, we aimed to prepare novel ANS-loaded PLA-PEG-PLA nanoparticles (ANS-NPs) and to compare the apoptotic response of MCF-7 cell line to both ANS and ANS-loaded NPs...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29343957/codelivery-of-doxorubicin-and-mdr1-sirna-by-mesoporous-silica-nanoparticles-polymerpolyethylenimine-to-improve-oral-squamous-carcinoma-treatment
#3
Dandan Wang, Xiaowei Xu, Kai Zhang, Bin Sun, Lu Wang, Lin Meng, Qilin Liu, Changyu Zheng, Bai Yang, Hongchen Sun
Oral cancer is a type of head and neck cancer that is the seventh most frequent cancer and the ninth most frequent cause of death globally. About 90% of oral cancer is of squamous cell carcinoma type. Surgery and radiation with and without chemotherapy are the major treatments for oral cancer. Better advanced treatment is still needed. Multidrug resistance plays an important role in failure of oral cancer chemotherapy. In this study, we tried to fabricate a novel nanoparticle that could carry both MDR1-siRNA to block MDR1 expression and doxorubicin (DOX), a chemotherapy drug, into cancer cells in order to directly kill the cells with little or no effect of multidrug resistance...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29343956/essential-oil-loaded-lipid-nanoparticles-for-wound-healing
#4
Francesca Saporito, Giuseppina Sandri, Maria Cristina Bonferoni, Silvia Rossi, Cinzia Boselli, Antonia Icaro Cornaglia, Barbara Mannucci, Pietro Grisoli, Barbara Vigani, Franca Ferrari
Chronic wounds and severe burns are diseases responsible for severe morbidity and even death. Wound repair is a crucial process and tissue regeneration enhancement and infection prevention are key factors to minimize pain, discomfort, and scar formation. The aim of this work was the development of lipid nanoparticles (solid lipid nanoparticles and nanostructured lipid carriers [NLC]), to be loaded with eucalyptus or rosemary essential oils and to be used, as medical devices, to enhance healing of skin wounds...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29343955/lysyl-oxidase-activates-cancer-stromal-cells-and-promotes-gastric-cancer-progression-quantum-dot-based-identification-of-biomarkers-in-cancer-stromal-cells
#5
Chunwei Peng, Jiuyang Liu, Guifang Yang, Yan Li
Purpose: Semiconductor quantum dots (QDs) are a promising alternative to organic fluorescent dyes for multiplexed molecular imaging of cancer stroma, which have great advantages in holistically analyzing the complex interactions among cancer stromal components in situ. Patients and methods: A QD probe-based multiplexed spectral molecular imaging method was established for simultaneous imaging. Three tissue microarrays (TMAs) including 184 gastric cancer (GC) tissues were constructed for the study...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29317822/novel-functionalized-nanoparticles-for-tumor-targeting-co-delivery-of-doxorubicin-and-sirna-to-enhance-cancer-therapy
#6
Yu Xia, Tiantian Xu, Changbing Wang, Yinghua Li, Zhengfang Lin, Mingqi Zhao, Bing Zhu
Human homeobox protein (Nanog) is highly expressed in most cancer cells and has gradually emerged as an excellent target in cancer therapy, owing to its regulation of cancer cell proliferation, metastasis and apoptosis. In this study, we prepared tumor-targeting functionalized selenium nanoparticles (RGDfC-SeNPs) to load chemotherapeutic doxorubicin (DOX) and Nanog siRNA. Herein, RGDfC peptide was used as a tumor-targeting moiety which could specifically bind to αvβ3 integrins overexpressed on various cancer cells...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29317821/tacrolimus-nanoparticles-based-on-chitosan-combined-with-nicotinamide-enhancing-percutaneous-delivery-and-treatment-efficacy-for-atopic-dermatitis-and-reducing-dose
#7
Kaiyue Yu, Yixuan Wang, Tao Wan, Yuanhao Zhai, Sisi Cao, Wenyi Ruan, Chuanbin Wu, Yuehong Xu
Background: Topical application of tacrolimus (FK506) was effective in the treatment of atopic dermatitis (AD); however, adverse effects frequently occurred with the increase of FK506 dose during long-term treatment. Objective: The objective of this project was to develop a hybrid skin targeting system encapsulating FK506 based on nicotinamide (NIC) and chitosan nanoparticles (CS-NPs), ie, FK506-NIC-CS-NPs, which took advantages of both of NIC and CS-NPs to obtain the synergetic effects of percutaneous delivery and treatment efficacy enhancement along with dose reduction...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29317820/enhanced-bone-regeneration-using-an-insulin-loaded-nano-hydroxyapatite-collagen-plga-composite-scaffold
#8
Xing Wang, Guilan Zhang, Feng Qi, Yongfeng Cheng, Xuguang Lu, Lu Wang, Jing Zhao, Bin Zhao
Insulin is widely considered as a classical hormone and drug in maintaining energy and glucose homeostasis. Recently, insulin has been increasingly recognized as an indispensable factor for osteogenesis and bone turnover, but its applications in bone regeneration have been restricted because of the short periods of activity and uncontrolled release. In this study, we incorporated insulin-loaded poly lactic-co-glycolic-acid (PLGA) nanospheres into nano-hydroxyapatite/collagen (nHAC) scaffolds and investigated the bioactivity of the composite scaffolds in vitro and in vivo...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29317819/inhibition-of-cancer-cell-migration-with-cus-msio2-peg-nanoparticles-by-repressing-mmp-2-mmp-9-expression
#9
Guoying Deng, Feng Zhou, Zizheng Wu, Fei Zhang, Kerun Niu, Yingjie Kang, Xijian Liu, Qiugen Wang, Yin Wang, Qian Wang
The metastasis of cancer cells is a vital aspect of disease progression and therapy. Although a few nanoparticles (NPs) aimed at controlling metastasis in cancer therapy have been reported, the NPs are normally combined with drugs, yet the direct therapeutic effects of the NPs are not reported. To study the direct influence of NPs on cancer metastasis, the potential suppression capacity of CuS@mSiO2-PEG NPs to tumor cell migration, a kind of typical photothermal NPs, was systemically evaluated in this study...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29317818/antibacterial-mechanisms-of-a-novel-type-picosecond-laser-generated-silver-titanium-nanoparticles-and-their-toxicity-to-human-cells
#10
Peri Korshed, Lin Li, Zhu Liu, Aleksandr Mironov, Tao Wang
In this study, we explored the antibacterial mechanisms for a novel type of Ag-TiO2 compound nanoparticles (NPs) produced from an Ag-TiO2 alloy using a picosecond laser and evaluated the toxicity of the Ag-TiO2 NPs to a range of human cell types. Transmission electron microscopy was used to determine the morphology, shapes, and size distribution of the laser-generated Ag-TiO2 NPs. UV-visible spectrometer was used to confirm the shift of light absorbance of the NPs toward visible light wavelength. Results showed that the laser-generated Ag-TiO2 NPs had significant antibacterial activities against both Gram-negative and Gram-positive bacterial strains, including Escherichia coli, Pseudomonas aeruginosa, and the methicillin-resistant Staphylococcus aureus...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29317817/antibacterial-activity-of-trimetal-cuznfe-oxide-nanoparticles
#11
Khalid E Alzahrani, Abdurahman A Niazy, Abdullah M Alswieleh, Rizwan Wahab, Ahmed M El-Toni, Hamdan S Alghamdi
Background: The increasing resistance of pathogenic bacteria to antibiotics is a challenging worldwide health problem that has led to the search for new and more efficient antibacterial agents. Nanotechnology has proven to be an effective tool for the fight against bacteria. Methods: In this paper, we present the synthesis and traits of trimetal (CuZnFe) oxide nanoparticles (NPs) using X-ray diffraction, high-resolution transmission electron microscopy, and energy dispersive x-ray spectroscopy...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29317816/lipopolysaccharide-induced-inflammation-in-monocytes-macrophages-is-blocked-by-liposomal-delivery-of-gi-protein-inhibitor
#12
Monica Madalina Tucureanu, Daniela Rebleanu, Cristina Ana Constantinescu, Mariana Deleanu, Geanina Voicu, Elena Butoi, Manuela Calin, Ileana Manduteanu
Background: Lipopolysaccharide (LPS) is widely recognized as a potent activator of monocytes/macrophages, and its effects include an altered production of key mediators, such as inflammatory cytokines and chemokines. The involvement of Gi protein in mediating LPS effects has been demonstrated in murine macrophages and various cell types of human origin. Purpose: The aim of the present work was to evaluate the potential of a Gi-protein inhibitor encapsulated in liposomes in reducing the inflammatory effects induced by LPS in monocytes/macrophages...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29317815/double-stranded-phosphodiester-cytosine-guanine-oligodeoxynucleotide-complexed-with-calcium-phosphate-as-a-potent-vaccine-adjuvant-for-activating-cellular-and-th1-type-humoral-immunities
#13
Nobutaka Hanagata, Xianglan Li, Min-Hua Chen, Jie Li, Shinya Hattori
Conventional class B cytosine-guanine (CpG) (CpG-B) oligodeoxynucleotide (ODNs) consisting of a single-stranded (ss) phosphorothioate (PT) backbone (ss CpG-B-PT) is converted from a proinflammatory cytokine inducer to a type-I interferon (IFN) inducer when complexed with cationic materials. In this study, we designed ss CpG-B and double-stranded (ds) CpG-B ODNs with a phosphodiester (PD) backbone (ss CpG-B-PD and ds CpG-B-PD, respectively) that became type-I IFN inducers upon complexation with Lipofectamine 2000 (Lipo), a cationic liposome...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29296084/development-and-characterization-of-p1025-loaded-bioadhesive-liquid-crystalline-system-for-the-prevention-of-streptococcus-mutans-biofilms
#14
Giovana Maria Fioramonti Calixto, Cristiane Duque, Kelly Limi Aida, Vanessa Rodrigues Dos Santos, Loiane Massunari, Marlus Chorilli
Formation of a dental biofilm by Streptococcus mutans can cause dental caries, and remains a costly health problem worldwide. Recently, there has been a growing interest in the use of peptidic drugs, such as peptide p1025, analogous to the fragments 1025-1044 of S. mutans cellular adhesin, responsible for the adhesion and formation of dental biofilm. However, peptides have physicochemical characteristics that may affect their biological action, limiting their clinical performance. Therefore, drug-delivery systems, such as a bioadhesive liquid-crystalline system (LCS), may be attractive strategies for peptide delivery...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29296083/enhanced-antitumor-efficacy-of-doxorubicin-encapsulated-halloysite-nanotubes
#15
Kai Li, Yongxing Zhang, Mengting Chen, Yangyang Hu, Weiliang Jiang, Li Zhou, Sisi Li, Min Xu, Qinghua Zhao, Rong Wan
To improve the antitumor efficacy of doxorubicin (DOX) and provide novel clinical treatment of gastric cancer, halloysite nanotubes (HNTs) loaded with DOX were encapsulated by soybean phospholipid (LIP) and the formed HNTs/DOX/LIP was systematically characterized via different techniques. The in vitro anticancer activity of HNTs/DOX/LIP was examined using an MTT assay. The antitumor efficacy and biocompatibility were monitored by measuring the tumor volume and assessing the blood routine and serum biochemistry using an ectopic implantation cancer model...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29296082/biophysical-and-biological-contributions-of-polyamine-coated-carbon-nanotubes-and-bidimensional-buckypapers-in-the-delivery-of-mirnas-to-human-cells
#16
Antonella Celluzzi, Alessandro Paolini, Valentina D'Oria, Roberta Risoluti, Stefano Materazzi, Marco Pezzullo, Stefano Casciardi, Simona Sennato, Federico Bordi, Andrea Masotti
Recent findings in nanomedicine have revealed that carbon nanotubes (CNTs) can be used as potential drug carriers, therapeutic agents and diagnostics tools. Moreover, due to their ability to cross cellular membranes, their nanosize dimension, high surface area and relatively good biocompatibility, CNTs have also been employed as a novel gene delivery vector system. In our previous work, we functionalized CNTs with two polyamine polymers, polyethyleneimine (PEI) and polyamidoamine dendrimer (PAMAM). These compounds have low cytotoxicity, ability to conjugate microRNAs (such as miR-503) and, at the same time, transfect efficiently endothelial cells...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29296081/effect-of-dacarbazine-on-cd44-in-live-melanoma-cells-as-measured-by-atomic-force-microscopy-based-nanoscopy
#17
Xun Huang, Jiexiang He, Huan-Tian Zhang, Kai Sun, Jie Yang, Huajun Wang, Hongxin Zhang, Zhenzhao Guo, Zhen-Gang Zha, Changren Zhou
CD44 ligand-receptor interactions are known to be involved in regulating cell migration and tumor cell metastasis. High expression levels of CD44 correlate with a poor prognosis of melanoma patients. In order to understand not only the mechanistic basis for dacarbazine (DTIC)-based melanoma treatment but also the reason for the poor prognosis of melanoma patients treated with DTIC, dynamic force spectroscopy was used to structurally map single native CD44-coupled receptors on the surface of melanoma cells. The effect of DTIC treatment was quantified by the dynamic binding strength and the ligand-binding free-energy landscape...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29276386/guided-bone-regeneration-with-asymmetric-collagen-chitosan-membranes-containing-aspirin-loaded-chitosan-nanoparticles
#18
Jiayu Zhang, Shiqing Ma, Zihao Liu, Hongjuan Geng, Xin Lu, Xi Zhang, Hongjie Li, Chenyuan Gao, Xu Zhang, Ping Gao
Introduction: Membranes allowing the sustained release of drugs that can achieve cell adhesion are very promising for guided bone regeneration. Previous studies have suggested that aspirin has the potential to promote bone regeneration. The purpose of this study was to prepare a local drug delivery system with aspirin-loaded chitosan nanoparticles (ACS) contained in an asymmetric collagen-chitosan membrane (CCM). Methods: In this study, the ACS were fabricated using different concentrations of aspirin (5 mg, 25 mg, 50 mg, and 75 mg)...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29276385/green-synthesis-palladium-nanoparticles-mediated-by-white-tea-camellia-sinensis-extract-with-antioxidant-antibacterial-and-antiproliferative-activities-toward-the-human-leukemia-molt-4-cell-line
#19
Susan Azizi, Mahnaz Mahdavi Shahri, Heshu Sulaiman Rahman, Raha Abdul Rahim, Abdullah Rasedee, Rosfarizan Mohamad
Among nanoparticles used for medical applications, palladium nanoparticles (PdNPs) are among the least investigated. This study was undertaken to develop PdNPs by green synthesis using white tea (W.tea; Camellia sinensis) extract to produce the Pd@W.tea NPs. The Pd@W.tea NPs were characterized by UV-vis spectroscopy and X-ray diffractometry, and evaluated with transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The Pd@W.tea NPs were spherical (size 6-18 nm) and contained phenols and flavonoids acquired from the W...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29276384/investigation-of-the-effects-of-carbon-based-nanomaterials-on-a53t-alpha-synuclein-aggregation-using-a-whole-cell-recombinant-biosensor
#20
Soheila Mohammadi, Maryam Nikkhah, Saman Hosseinkhani
The aggregation of alpha-synuclein (αS), natively unstructured presynaptic protein, is a crucial factor leading to the pathogenesis of Parkinson's disease (PD) and other related disorders. Recent studies have shown prefibrillar and oligomeric intermediates of αS as toxic to the cells. Herein, split-luciferase complementation assay is used to design a "signal-on" biosensor to monitor oligomerization of A53T αS inside the cells. Then, the effect of carbon-based nanomaterials, such as graphene quantum dots (GQDs) and graphene oxide quantum dots (GOQDs), on A53T αS oligomerization in vitro and in living cells is investigated...
2017: International Journal of Nanomedicine
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