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International Journal of Nanomedicine

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https://www.readbyqxmd.com/read/27895484/the-effect-of-dexamethasone-cell-penetrating-peptide-nanoparticles-on-gene-delivery-for-inner-ear-therapy
#1
Ji Young Yoon, Keum-Jin Yang, Shi-Nae Park, Dong-Kee Kim, Jong-Duk Kim
Dexamethasone (Dex)-loaded PHEA-g-C18-Arg8 (PCA) nanoparticles (PCA/Dex) were developed for the delivery of genes to determine the synergistic effect of Dex on gene expression. The cationic PCA nanoparticles were self-assembled to create cationic micelles containing an octadecylamine (C18) core with Dex and an arginine 8 (Arg8) peptide shell for electrostatic complexation with nucleic acids (connexin 26 [Cx26] siRNA, green fluorescent protein [GFP] DNA or brain-derived neurotrophic factor [BDNF] pDNA). The PCA/Dex nanoparticles conjugated with Arg8, a cell-penetrating peptide that enhances permeability through a round window membrane in the inner ear for gene delivery, exhibited high uptake efficiency in HEI-OC1 cells...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27895483/improved-proliferation-of-antigen-specific-cytolytic-t-lymphocytes-using-a-multimodal-nanovaccine
#2
Bo Li, Michael Siuta, Vanessa Bright, Dmitry Koktysh, Brittany K Matlock, Megan E Dumas, Meiying Zhu, Alex Holt, Donald Stec, Shenglou Deng, Paul B Savage, Sebastian Joyce, Wellington Pham
The present study investigated the immunoenhancing property of our newly designed nanovaccine, that is, its ability to induce antigen-specific immunity. This study also evaluated the synergistic effect of a novel compound PBS-44, an α-galactosylceramide analog, in boosting the immune response induced by our nanovaccine. The nanovaccine was prepared by encapsulating ovalbumin (ova) and an adjuvant within the poly(lactic-co-glycolic acid) nanoparticles. Quantitative analysis of our study data showed that the encapsulated vaccine was physically and biologically stable; the core content of our nanovaccine was found to be released steadily and slowly, and nearly 90% of the core content was slowly released over the course of 25 days...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27895482/nanoparticle-based-strategy-for-personalized-b-cell-lymphoma-therapy
#3
Nicola M Martucci, Nunzia Migliaccio, Immacolata Ruggiero, Francesco Albano, Gaetano Calì, Simona Romano, Monica Terracciano, Ilaria Rea, Paolo Arcari, Annalisa Lamberti
B-cell lymphoma is associated with incomplete response to treatment, and the development of effective strategies targeting this disease remains challenging. A new personalized B-cell lymphoma therapy, based on a site-specific receptor-mediated drug delivery system, was developed in this study. Specifically, natural silica-based nanoparticles (diatomite) were modified to actively target the antiapoptotic factor B-cell lymphoma/leukemia 2 (Bcl2) with small interfering RNA (siRNA). An idiotype-specific peptide (Id-peptide) specifically recognized by the hypervariable region of surface immunoglobulin B-cell receptor was exploited as a homing device to ensure specific targeting of lymphoma cells...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27895481/polyethyleneimine-coated-quantum-dots-for-mirna-delivery-and-its-enhanced-suppression-in-hepg2-cells
#4
Gaofeng Liang, Yang Li, Wenpo Feng, Xinshuai Wang, Aihua Jing, Jinghua Li, Kaiwang Ma
Quantum dots (QDs) have been intensively investigated for bioimaging, drug delivery, and labeling probes because of their unique optical properties. In this study, CdSe/ZnS QDs-based nonviral vectors with the dual functions of delivering miR-26a plasmid and bioimaging were formulated by capping the surface of CdSe/ZnS QDs with polyethyleneimine (PEI). The PEI-coated QDs were capable of condensing miR-26a expression vector into nanocomplexes that can emit strong red luminescence when loaded with CdSe/ZnS QDs...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27895480/synthesis-of-three-arm-block-copolymer-poly-lactic-co-glycolic-acid-poly-ethylene-glycol-with-oxalyl-chloride-and-its-application-in-hydrophobic-drug-delivery
#5
Xiaowei Zhu, Chao Liu, Jianwei Duan, Xiaoyu Liang, Xuanling Li, Hongfan Sun, Deling Kong, Jing Yang
PURPOSE: Synthesis of star-shaped block copolymer with oxalyl chloride and preparation of micelles to assess the prospect for drug-carrier applications. MATERIALS AND METHODS: Three-arm star block copolymers of poly(lactic-co-glycolic acid) (3S-PLGA)-polyethylene glycol (PEG) were synthesized by ring-opening polymerization, then PEG as the hydrophilic block was linked to the terminal hydroxyl of 3S-PLGA with oxalyl chloride. Fourier-transform infrared (FT-IR) spectroscopy, gel-permeation chromatography (GPC), hydrogen nuclear magnetic resonance ((1)H-NMR) spectra, and differential scanning calorimetry were employed to identify the structure and properties of 3S-PLGA-PEG...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27895479/cationic-pegylated-liposomes-incorporating-an-antimicrobial-peptide-tilapia-hepcidin-2-3-an-adjuvant-of-epirubicin-to-overcome-multidrug-resistance-in-cervical-cancer-cells
#6
Vivian Juang, Hsin-Pin Lee, Anya Maan-Yuh Lin, Yu-Li Lo
Antimicrobial peptides (AMPs) have been recently evaluated as a new generation of adjuvants in cancer chemotherapy. In this study, we designed PEGylated liposomes encapsulating epirubicin as an antineoplastic agent and tilapia hepcidin 2-3, an AMP, as a multidrug resistance (MDR) transporter suppressor and an apoptosis/autophagy modulator in human cervical cancer HeLa cells. Cotreatment of HeLa cells with PEGylated liposomal formulation of epirubicin and hepcidin 2-3 significantly increased the cytotoxicity of epirubicin...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27895478/biosynthesis-characterization-and-evaluation-of-bioactivities-of-leaf-extract-mediated-biocompatible-silver-nanoparticles-from-an-early-tracheophyte-pteris-tripartita-sw
#7
Xavierravi Baskaran, Antony Varuvel Geo Vigila, Thangaraj Parimelazhagan, Doulathabad Muralidhara-Rao, Shouzhou Zhang
The objective of the study was to characterize silver nanoparticles (Ag-NPs) and their bioactivities in early tracheophytes (Pteridophyta). Aqueous leaf extract of a critically endangered fern, Pteris tripartita Sw., was used for one-step green synthesis of Ag-NPs. The biosynthesized Ag-NPs were characterized using ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and high-resolution transmission electron microscopy...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27895477/noninvasive-monitoring-of-early-antiangiogenic-therapy-response-in-human-nasopharyngeal-carcinoma-xenograft-model-using-mri-with-rgd-conjugated-ultrasmall-superparamagnetic-iron-oxide-nanoparticles
#8
Yanfen Cui, Caiyuan Zhang, Ran Luo, Huanhuan Liu, Zhongyang Zhang, Tianyong Xu, Yong Zhang, Dengbin Wang
PURPOSE: Arginine-glycine-aspartic acid (RGD)-based nanoprobes allow specific imaging of integrin αvβ3, a protein overexpressed during angiogenesis. Therefore, this study applied a novel RGD-coupled, polyacrylic acid (PAA)-coated ultrasmall superparamagnetic iron oxide (USPIO) (referred to as RGD-PAA-USPIO) in order to detect tumor angiogenesis and assess the early response to antiangiogenic treatment in human nasopharyngeal carcinoma (NPC) xenograft model by magnetic resonance imaging (MRI)...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27881917/preparation-and-characterization-of-novel-chitosan-protamine-nanoparticles-for-nucleus-targeted-anticancer-drug-delivery
#9
Xiwei Yu, Jiahui Hou, Yijie Shi, Chang Su, Liang Zhao
It is well known that most anticancer drugs commonly show high toxicity to the DNA of tumor cells and exert effects by combining with the DNA or associated enzymes in the nucleus. Most developed drugs are first delivered into the cytoplasm and then transferred to the nucleus through the membrane pores. Sometimes, the transportation of drugs from cytoplasm to nucleus is not efficient and often results in poor therapeutic effects. In this study, we developed special and novel nanoparticles (NPs) made of chitosan and protamine for targeted nuclear capture of drugs to enhance anticancer effects...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27881916/osseointegration-of-nanohydroxyapatite-or-nano-calcium-silicate-incorporated-polyetheretherketone-bioactive-composites-in-vivo
#10
Rui Ma, Zhifeng Yu, Songchao Tang, Yongkang Pan, Jie Wei, Tingting Tang
Polyetheretherketone (PEEK) exhibits appropriate biomechanical strength as well as good biocompatibility and stable chemical properties but lacks bioactivity and cannot achieve highly efficient osseointegration after implantation. Incorporating bioceramics into the PEEK matrix is a feasible approach for improving its bioactivity. In this study, nanohydroxyapatite (n-HA) and nano-calcium silicate (n-CS) were separately incorporated into PEEK to prepare n-HA/PEEK and n-CS/PEEK biocomposites, respectively, using a compounding and injection-molding technique, and the in vitro degradation characteristics were evaluated...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27877042/effects-of-carbopol-%C3%A2-934-proportion-on-nanoemulsion-gel-for-topical-and-transdermal-drug-delivery-a-skin-permeation-study
#11
Yin Zheng, Wu-Qing Ouyang, Yun-Peng Wei, Shahid Faraz Syed, Chao-Shuang Hao, Bo-Zhen Wang, Yan-Hong Shang
Nanoemulsions (NEs) are used as transdermal drug delivery systems for systematic therapeutic purposes. We hypothesized that the skin permeation profile of an NE could be modulated by incorporating it into a hydrogel containing differing proportions of thickening agent. The objectives of this study were as follows: 1) to determine the stability and skin irritability of NE gels (NGs) containing 1%, 2%, and 3% (w/w) Carbopol(®) 934 (CP934) (termed NG1, NG2, and NG3, respectively); 2) to compare the skin permeation profiles and drug deposition patterns of the NGs; and 3) to visualize the drug delivery routes of the NGs...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27877041/nanomedicine-strategy-for-optimizing-delivery-to-outer-hair-cells-by-surface-modified-poly-lactic-glycolic-acid-nanoparticles-with-hydrophilic-molecules
#12
Xingxing Wen, Shan Ding, Hui Cai, Junyi Wang, Lu Wen, Fan Yang, Gang Chen
Targeted drug delivery to outer hair cells (OHCs) in the cochlea by nanomedicine strategies forms an effective therapeutic approach for treating hearing loss. Surface chemistry plays a deciding role in nanoparticle (NP) biodistribution, but its influence on such distribution in the cochlea remains largely unknown. Herein, we report the first systematic comparison of poly(lactic/glycolic acid) nanoparticles (PLGA NPs) with or without surface modification of hydrophilic molecules for optimizing the delivery to OHCs both in vitro and in vivo...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27877040/intestinal-anti-inflammatory-effects-of-rgd-functionalized-silk-fibroin-nanoparticles-in-trinitrobenzenesulfonic-acid-induced-experimental-colitis-in-rats
#13
Alba Rodriguez-Nogales, Francesca Algieri, Laura De Matteis, A Abel Lozano-Perez, Jose Garrido-Mesa, Teresa Vezza, J M de la Fuente, Jose Luis Cenis, Julio Gálvez, Maria Elena Rodriguez-Cabezas
BACKGROUND: Current treatment of inflammatory bowel disease is based on the use of immunosuppressants or anti-inflammatory drugs, which are characterized by important side effects that can limit their use. Previous research has been performed by administering these drugs as nanoparticles that target the ulcerated intestinal regions and increase their bioavailability. It has been reported that silk fibroin can act as a drug carrier and shows anti-inflammatory properties. PURPOSE: This study was designed to enhance the interaction of the silk fibroin nanoparticles (SFNs) with the injured intestinal tissue by functionalizing them with the peptide motif RGD (arginine-glycine-aspartic acid) and to evaluate the intestinal anti-inflammatory properties of these RGD-functionalized silk fibroin nanoparticles (RGD-SFNs) in the trinitrobenzenesulfonic acid (TNBS) model of rat colitis...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27877039/biosynthesis-of-gold-nanoparticles-by-the-extreme-bacterium-deinococcus-radiodurans-and-an-evaluation-of-their-antibacterial-properties
#14
Jiulong Li, Qinghao Li, Xiaoqiong Ma, Bing Tian, Tao Li, Jiangliu Yu, Shang Dai, Yulan Weng, Yuejin Hua
Deinococcus radiodurans is an extreme bacterium known for its high resistance to stresses including radiation and oxidants. The ability of D. radiodurans to reduce Au(III) and biosynthesize gold nanoparticles (AuNPs) was investigated in aqueous solution by ultraviolet and visible (UV/Vis) absorption spectroscopy, electron microscopy, X-ray diffraction (XRD), dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). D. radiodurans efficiently synthesized AuNPs from 1 mM Au(III) solution in 8 h...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27877038/sulfonate-modified-phenylboronic-acid-rich-nanoparticles-as-a-novel-mucoadhesive-drug-delivery-system-for-vaginal-administration-of-protein-therapeutics-improved-stability-mucin-dependent-release-and-effective-intravaginal-placement
#15
ChunYan Li, ZhiGang Huang, ZheShuo Liu, LiQian Ci, ZhePeng Liu, Yu Liu, XueYing Yan, WeiYue Lu
Effective interaction between mucoadhesive drug delivery systems and mucin is the basis of effective local placement of drugs to play its therapeutic role after mucosal administration including vaginal use, which especially requires prolonged drug presence for the treatment of gynecological infectious diseases. Our previous report on phenylboronic acid-rich nanoparticles (PBNPs) demonstrated their strong interaction with mucin and mucin-sensitive release profiles of the model protein therapeutics interferon (IFN) in vitro, but their poor stability and obvious tendency to aggregate over time severely limited future application...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27877037/acute-and-subacute-toxicity-profiles-of-thymoquinone-loaded-nanostructured-lipid-carrier-in-balb-c-mice
#16
Yong Sze Ong, Latifah Saiful Yazan, Wei Keat Ng, Mustapha M Noordin, Sarah Sapuan, Jhi Biau Foo, Yin Sim Tor
BACKGROUND: Thymoquinone (TQ), the predominant active lipophilic component in Nigella sativa seed oil, has a variety of pharmacological properties such as anticancer activities. However, translation of TQ to clinical phase is still not possible due to its hydrophobic properties. This problem can be solved by encapsulating it in nanoformulations to enhance its pharmacological properties. In our previous study, TQ has been successfully encapsulated in a nanostructured lipid carrier (hereinafter referred to as TQNLC) with excellent physiochemical properties such as high encapsulation efficiency, high drug-loading capacity, particle diameter less than 100 nm, and stability up to 2 years...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27877036/modification-of-the-surface-of-superparamagnetic-iron-oxide-nanoparticles-to-enable-their-safe-application-in-humans
#17
Cindy Strehl, Lionel Maurizi, Timo Gaber, Paula Hoff, Thomas Broschard, A Robin Poole, Heinrich Hofmann, Frank Buttgereit
Combined individually tailored methods for diagnosis and therapy (theragnostics) could be beneficial in destructive diseases, such as rheumatoid arthritis. Nanoparticles are promising candidates for theragnostics due to their excellent biocompatibility. Nanoparticle modifications, such as improved surface coating, are in development to meet various requirements, although safety concerns mean that modified nanoparticles require further review before their use in medical applications is permitted. We have previously demonstrated that iron oxide nanoparticles with amino-polyvinyl alcohol (a-PVA) adsorbed on their surfaces have the unwanted effect of increasing human immune cell cytokine secretion...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27853370/apoptotic-neuron-secreted-hn12-inhibits-cell-apoptosis-in-hirschsprung-s-disease
#18
Chunxia Du, Hua Xie, Rujin Zang, Ziyang Shen, Hongxing Li, Pingfa Chen, Xiaoqun Xu, Yankai Xia, Weibing Tang
Perturbation in apoptosis can lead to Hirschsprung's disease (HSCR), which is a genetic disorder of neural crest development. It is believed that long noncoding RNAs (lncRNAs) play a role in the progression of HSCR. This study shows that apoptotic neurons can suppress apoptosis of nonapoptotic cells by secreting exosomes that contain high levels of HN12 lncRNA. Elevated exogenous HN12 in nonapoptotic cells effectively inhibited cell apoptosis by maintaining the function of mitochondria, including the production of ATP and the release of cytochrome C...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27853369/the-effect-of-dual-functional-hyaluronic-acid-vitamin-e-succinate-micelles-on-targeting-delivery-of-doxorubicin
#19
Jinling Wang, Wenzhuan Ma, Qiang Guo, Ying Li, Zhongdong Hu, Zhixiang Zhu, Xiaohui Wang, Yunfang Zhao, Xingyun Chai, Pengfei Tu
Tumor-targeted delivery system has been developed as an attractive strategy for effective tumor therapy. In this study, in order to enhance the antitumor effects of doxorubicin (DOX), amphiphilic hyaluronic acid (HA)-conjugated vitamin E succinate (VES) copolymers (HA-VES) with different degrees of substitution (DS) were prepared with synergistic antitumor effects and active targeting activities, and utilized as nanocarriers for the efficient delivery of DOX. DOX-loaded HA-VES polymeric micelles (HA-VES/DOX) self-assembled from dual-functional HA-VES copolymer and exhibited excellent loading efficiency and superior colloidal stability...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27853368/effects-of-intermolecular-interactions-on-the-stability-of-carbon-nanotube-gold-nanoparticle-conjugates-in-solution
#20
Lukasz Konczak, Jolanta Narkiewicz-Michalek, Giorgia Pastorin, Tomasz Panczyk
This work deals with the role of intermolecular interactions in the stability of a carbon nanotube (CNT) capped by functionalized gold nanoparticles (AuNPs). The importance of such a system is due to its potential application as a pH-controlled drug carrier. Our preliminary experimental studies showed that fabrication of such a nanobottle/nanocontainer is feasible and it is possible to encapsulate the anticancer drug cisplatin inside the inner space of a CNT and seal its ends by functionalized AuNPs. The expected behavior, that is, detachment of AuNPs at acidic pH and the release of cisplatin, was, however, not observed...
2016: International Journal of Nanomedicine
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